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* @license\n * Video.js 7.5.0 <http://videojs.com/>\n * Copyright Brightcove, Inc. <https://www.brightcove.com/>\n * Available under Apache License Version 2.0\n * <https://github.com/videojs/video.js/blob/master/LICENSE>\n *\n * Includes vtt.js <https://github.com/mozilla/vtt.js>\n * Available under Apache License Version 2.0\n * <https://github.com/mozilla/vtt.js/blob/master/LICENSE>\n */\n\n(function (global, factory) {\n  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory(require('global/window'), require('global/document')) :\n  typeof define === 'function' && define.amd ? define(['global/window', 'global/document'], factory) :\n  (global = global || self, global.videojs = factory(global.window, global.document));\n}(this, function (window$1, document) {\n  window$1 = window$1 && window$1.hasOwnProperty('default') ? window$1['default'] : window$1;\n  document = document && document.hasOwnProperty('default') ? document['default'] : document;\n\n  var version = \"7.5.0\";\n\n  function _inheritsLoose(subClass, superClass) {\n    subClass.prototype = Object.create(superClass.prototype);\n    subClass.prototype.constructor = subClass;\n    subClass.__proto__ = superClass;\n  }\n\n  function _setPrototypeOf(o, p) {\n    _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) {\n      o.__proto__ = p;\n      return o;\n    };\n\n    return _setPrototypeOf(o, p);\n  }\n\n  function isNativeReflectConstruct() {\n    if (typeof Reflect === \"undefined\" || !Reflect.construct) return false;\n    if (Reflect.construct.sham) return false;\n    if (typeof Proxy === \"function\") return true;\n\n    try {\n      Date.prototype.toString.call(Reflect.construct(Date, [], function () {}));\n      return true;\n    } catch (e) {\n      return false;\n    }\n  }\n\n  function _construct(Parent, args, Class) {\n    if (isNativeReflectConstruct()) {\n      _construct = Reflect.construct;\n    } else {\n      _construct = function _construct(Parent, args, Class) {\n        var a = [null];\n        a.push.apply(a, args);\n        var Constructor = Function.bind.apply(Parent, a);\n        var instance = new Constructor();\n        if (Class) _setPrototypeOf(instance, Class.prototype);\n        return instance;\n      };\n    }\n\n    return _construct.apply(null, arguments);\n  }\n\n  function _assertThisInitialized(self) {\n    if (self === void 0) {\n      throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\");\n    }\n\n    return self;\n  }\n\n  function _taggedTemplateLiteralLoose(strings, raw) {\n    if (!raw) {\n      raw = strings.slice(0);\n    }\n\n    strings.raw = raw;\n    return strings;\n  }\n\n  /**\n   * @file create-logger.js\n   * @module create-logger\n   */\n\n  var history = [];\n  /**\n   * Log messages to the console and history based on the type of message\n   *\n   * @private\n   * @param  {string} type\n   *         The name of the console method to use.\n   *\n   * @param  {Array} args\n   *         The arguments to be passed to the matching console method.\n   */\n\n  var LogByTypeFactory = function LogByTypeFactory(name, log) {\n    return function (type, level, args) {\n      var lvl = log.levels[level];\n      var lvlRegExp = new RegExp(\"^(\" + lvl + \")$\");\n\n      if (type !== 'log') {\n        // Add the type to the front of the message when it's not \"log\".\n        args.unshift(type.toUpperCase() + ':');\n      } // Add console prefix after adding to history.\n\n\n      args.unshift(name + ':'); // Add a clone of the args at this point to history.\n\n      if (history) {\n        history.push([].concat(args));\n      } // If there's no console then don't try to output messages, but they will\n      // still be stored in history.\n\n\n      if (!window$1.console) {\n        return;\n      } // Was setting these once outside of this function, but containing them\n      // in the function makes it easier to test cases where console doesn't exist\n      // when the module is executed.\n\n\n      var fn = window$1.console[type];\n\n      if (!fn && type === 'debug') {\n        // Certain browsers don't have support for console.debug. For those, we\n        // should default to the closest comparable log.\n        fn = window$1.console.info || window$1.console.log;\n      } // Bail out if there's no console or if this type is not allowed by the\n      // current logging level.\n\n\n      if (!fn || !lvl || !lvlRegExp.test(type)) {\n        return;\n      }\n\n      fn[Array.isArray(args) ? 'apply' : 'call'](window$1.console, args);\n    };\n  };\n\n  function createLogger(name) {\n    // This is the private tracking variable for logging level.\n    var level = 'info'; // the curried logByType bound to the specific log and history\n\n    var logByType;\n    /**\n     * Logs plain debug messages. Similar to `console.log`.\n     *\n     * Due to [limitations](https://github.com/jsdoc3/jsdoc/issues/955#issuecomment-313829149)\n     * of our JSDoc template, we cannot properly document this as both a function\n     * and a namespace, so its function signature is documented here.\n     *\n     * #### Arguments\n     * ##### *args\n     * Mixed[]\n     *\n     * Any combination of values that could be passed to `console.log()`.\n     *\n     * #### Return Value\n     *\n     * `undefined`\n     *\n     * @namespace\n     * @param    {Mixed[]} args\n     *           One or more messages or objects that should be logged.\n     */\n\n    var log = function log() {\n      for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {\n        args[_key] = arguments[_key];\n      }\n\n      logByType('log', level, args);\n    }; // This is the logByType helper that the logging methods below use\n\n\n    logByType = LogByTypeFactory(name, log);\n    /**\n     * Create a new sublogger which chains the old name to the new name.\n     *\n     * For example, doing `videojs.log.createLogger('player')` and then using that logger will log the following:\n     * ```js\n     *  mylogger('foo');\n     *  // > VIDEOJS: player: foo\n     * ```\n     *\n     * @param {string} name\n     *        The name to add call the new logger\n     * @return {Object}\n     */\n\n    log.createLogger = function (subname) {\n      return createLogger(name + ': ' + subname);\n    };\n    /**\n     * Enumeration of available logging levels, where the keys are the level names\n     * and the values are `|`-separated strings containing logging methods allowed\n     * in that logging level. These strings are used to create a regular expression\n     * matching the function name being called.\n     *\n     * Levels provided by Video.js are:\n     *\n     * - `off`: Matches no calls. Any value that can be cast to `false` will have\n     *   this effect. The most restrictive.\n     * - `all`: Matches only Video.js-provided functions (`debug`, `log`,\n     *   `log.warn`, and `log.error`).\n     * - `debug`: Matches `log.debug`, `log`, `log.warn`, and `log.error` calls.\n     * - `info` (default): Matches `log`, `log.warn`, and `log.error` calls.\n     * - `warn`: Matches `log.warn` and `log.error` calls.\n     * - `error`: Matches only `log.error` calls.\n     *\n     * @type {Object}\n     */\n\n\n    log.levels = {\n      all: 'debug|log|warn|error',\n      off: '',\n      debug: 'debug|log|warn|error',\n      info: 'log|warn|error',\n      warn: 'warn|error',\n      error: 'error',\n      DEFAULT: level\n    };\n    /**\n     * Get or set the current logging level.\n     *\n     * If a string matching a key from {@link module:log.levels} is provided, acts\n     * as a setter.\n     *\n     * @param  {string} [lvl]\n     *         Pass a valid level to set a new logging level.\n     *\n     * @return {string}\n     *         The current logging level.\n     */\n\n    log.level = function (lvl) {\n      if (typeof lvl === 'string') {\n        if (!log.levels.hasOwnProperty(lvl)) {\n          throw new Error(\"\\\"\" + lvl + \"\\\" in not a valid log level\");\n        }\n\n        level = lvl;\n      }\n\n      return level;\n    };\n    /**\n     * Returns an array containing everything that has been logged to the history.\n     *\n     * This array is a shallow clone of the internal history record. However, its\n     * contents are _not_ cloned; so, mutating objects inside this array will\n     * mutate them in history.\n     *\n     * @return {Array}\n     */\n\n\n    log.history = function () {\n      return history ? [].concat(history) : [];\n    };\n    /**\n     * Allows you to filter the history by the given logger name\n     *\n     * @param {string} fname\n     *        The name to filter by\n     *\n     * @return {Array}\n     *         The filtered list to return\n     */\n\n\n    log.history.filter = function (fname) {\n      return (history || []).filter(function (historyItem) {\n        // if the first item in each historyItem includes `fname`, then it's a match\n        return new RegExp(\".*\" + fname + \".*\").test(historyItem[0]);\n      });\n    };\n    /**\n     * Clears the internal history tracking, but does not prevent further history\n     * tracking.\n     */\n\n\n    log.history.clear = function () {\n      if (history) {\n        history.length = 0;\n      }\n    };\n    /**\n     * Disable history tracking if it is currently enabled.\n     */\n\n\n    log.history.disable = function () {\n      if (history !== null) {\n        history.length = 0;\n        history = null;\n      }\n    };\n    /**\n     * Enable history tracking if it is currently disabled.\n     */\n\n\n    log.history.enable = function () {\n      if (history === null) {\n        history = [];\n      }\n    };\n    /**\n     * Logs error messages. Similar to `console.error`.\n     *\n     * @param {Mixed[]} args\n     *        One or more messages or objects that should be logged as an error\n     */\n\n\n    log.error = function () {\n      for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {\n        args[_key2] = arguments[_key2];\n      }\n\n      return logByType('error', level, args);\n    };\n    /**\n     * Logs warning messages. Similar to `console.warn`.\n     *\n     * @param {Mixed[]} args\n     *        One or more messages or objects that should be logged as a warning.\n     */\n\n\n    log.warn = function () {\n      for (var _len3 = arguments.length, args = new Array(_len3), _key3 = 0; _key3 < _len3; _key3++) {\n        args[_key3] = arguments[_key3];\n      }\n\n      return logByType('warn', level, args);\n    };\n    /**\n     * Logs debug messages. Similar to `console.debug`, but may also act as a comparable\n     * log if `console.debug` is not available\n     *\n     * @param {Mixed[]} args\n     *        One or more messages or objects that should be logged as debug.\n     */\n\n\n    log.debug = function () {\n      for (var _len4 = arguments.length, args = new Array(_len4), _key4 = 0; _key4 < _len4; _key4++) {\n        args[_key4] = arguments[_key4];\n      }\n\n      return logByType('debug', level, args);\n    };\n\n    return log;\n  }\n\n  /**\n   * @file log.js\n   * @module log\n   */\n  var log = createLogger('VIDEOJS');\n  var createLogger$1 = log.createLogger;\n\n  function clean(s) {\n    return s.replace(/\\n\\r?\\s*/g, '');\n  }\n\n  var tsml = function tsml(sa) {\n    var s = '',\n        i = 0;\n\n    for (; i < arguments.length; i++) {\n      s += clean(sa[i]) + (arguments[i + 1] || '');\n    }\n\n    return s;\n  };\n\n  /**\n   * @file obj.js\n   * @module obj\n   */\n\n  /**\n   * @callback obj:EachCallback\n   *\n   * @param {Mixed} value\n   *        The current key for the object that is being iterated over.\n   *\n   * @param {string} key\n   *        The current key-value for object that is being iterated over\n   */\n\n  /**\n   * @callback obj:ReduceCallback\n   *\n   * @param {Mixed} accum\n   *        The value that is accumulating over the reduce loop.\n   *\n   * @param {Mixed} value\n   *        The current key for the object that is being iterated over.\n   *\n   * @param {string} key\n   *        The current key-value for object that is being iterated over\n   *\n   * @return {Mixed}\n   *         The new accumulated value.\n   */\n  var toString = Object.prototype.toString;\n  /**\n   * Get the keys of an Object\n   *\n   * @param {Object}\n   *        The Object to get the keys from\n   *\n   * @return {string[]}\n   *         An array of the keys from the object. Returns an empty array if the\n   *         object passed in was invalid or had no keys.\n   *\n   * @private\n   */\n\n  var keys = function keys(object) {\n    return isObject(object) ? Object.keys(object) : [];\n  };\n  /**\n   * Array-like iteration for objects.\n   *\n   * @param {Object} object\n   *        The object to iterate over\n   *\n   * @param {obj:EachCallback} fn\n   *        The callback function which is called for each key in the object.\n   */\n\n\n  function each(object, fn) {\n    keys(object).forEach(function (key) {\n      return fn(object[key], key);\n    });\n  }\n  /**\n   * Array-like reduce for objects.\n   *\n   * @param {Object} object\n   *        The Object that you want to reduce.\n   *\n   * @param {Function} fn\n   *         A callback function which is called for each key in the object. It\n   *         receives the accumulated value and the per-iteration value and key\n   *         as arguments.\n   *\n   * @param {Mixed} [initial = 0]\n   *        Starting value\n   *\n   * @return {Mixed}\n   *         The final accumulated value.\n   */\n\n  function reduce(object, fn, initial) {\n    if (initial === void 0) {\n      initial = 0;\n    }\n\n    return keys(object).reduce(function (accum, key) {\n      return fn(accum, object[key], key);\n    }, initial);\n  }\n  /**\n   * Object.assign-style object shallow merge/extend.\n   *\n   * @param  {Object} target\n   * @param  {Object} ...sources\n   * @return {Object}\n   */\n\n  function assign(target) {\n    for (var _len = arguments.length, sources = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {\n      sources[_key - 1] = arguments[_key];\n    }\n\n    if (Object.assign) {\n      return Object.assign.apply(Object, [target].concat(sources));\n    }\n\n    sources.forEach(function (source) {\n      if (!source) {\n        return;\n      }\n\n      each(source, function (value, key) {\n        target[key] = value;\n      });\n    });\n    return target;\n  }\n  /**\n   * Returns whether a value is an object of any kind - including DOM nodes,\n   * arrays, regular expressions, etc. Not functions, though.\n   *\n   * This avoids the gotcha where using `typeof` on a `null` value\n   * results in `'object'`.\n   *\n   * @param  {Object} value\n   * @return {boolean}\n   */\n\n  function isObject(value) {\n    return !!value && typeof value === 'object';\n  }\n  /**\n   * Returns whether an object appears to be a \"plain\" object - that is, a\n   * direct instance of `Object`.\n   *\n   * @param  {Object} value\n   * @return {boolean}\n   */\n\n  function isPlain(value) {\n    return isObject(value) && toString.call(value) === '[object Object]' && value.constructor === Object;\n  }\n\n  /**\n   * @file computed-style.js\n   * @module computed-style\n   */\n  /**\n   * A safe getComputedStyle.\n   *\n   * This is needed because in Firefox, if the player is loaded in an iframe with\n   * `display:none`, then `getComputedStyle` returns `null`, so, we do a\n   * null-check to make sure that the player doesn't break in these cases.\n   *\n   * @function\n   * @param    {Element} el\n   *           The element you want the computed style of\n   *\n   * @param    {string} prop\n   *           The property name you want\n   *\n   * @see      https://bugzilla.mozilla.org/show_bug.cgi?id=548397\n   */\n\n  function computedStyle(el, prop) {\n    if (!el || !prop) {\n      return '';\n    }\n\n    if (typeof window$1.getComputedStyle === 'function') {\n      var cs = window$1.getComputedStyle(el);\n      return cs ? cs[prop] : '';\n    }\n\n    return '';\n  }\n\n  function _templateObject() {\n    var data = _taggedTemplateLiteralLoose([\"Setting attributes in the second argument of createEl()\\n                has been deprecated. Use the third argument instead.\\n                createEl(type, properties, attributes). Attempting to set \", \" to \", \".\"]);\n\n    _templateObject = function _templateObject() {\n      return data;\n    };\n\n    return data;\n  }\n  /**\n   * Detect if a value is a string with any non-whitespace characters.\n   *\n   * @private\n   * @param  {string} str\n   *         The string to check\n   *\n   * @return {boolean}\n   *         Will be `true` if the string is non-blank, `false` otherwise.\n   *\n   */\n\n  function isNonBlankString(str) {\n    return typeof str === 'string' && /\\S/.test(str);\n  }\n  /**\n   * Throws an error if the passed string has whitespace. This is used by\n   * class methods to be relatively consistent with the classList API.\n   *\n   * @private\n   * @param  {string} str\n   *         The string to check for whitespace.\n   *\n   * @throws {Error}\n   *         Throws an error if there is whitespace in the string.\n   */\n\n\n  function throwIfWhitespace(str) {\n    if (/\\s/.test(str)) {\n      throw new Error('class has illegal whitespace characters');\n    }\n  }\n  /**\n   * Produce a regular expression for matching a className within an elements className.\n   *\n   * @private\n   * @param  {string} className\n   *         The className to generate the RegExp for.\n   *\n   * @return {RegExp}\n   *         The RegExp that will check for a specific `className` in an elements\n   *         className.\n   */\n\n\n  function classRegExp(className) {\n    return new RegExp('(^|\\\\s)' + className + '($|\\\\s)');\n  }\n  /**\n   * Whether the current DOM interface appears to be real (i.e. not simulated).\n   *\n   * @return {boolean}\n   *         Will be `true` if the DOM appears to be real, `false` otherwise.\n   */\n\n\n  function isReal() {\n    // Both document and window will never be undefined thanks to `global`.\n    return document === window$1.document;\n  }\n  /**\n   * Determines, via duck typing, whether or not a value is a DOM element.\n   *\n   * @param  {Mixed} value\n   *         The value to check.\n   *\n   * @return {boolean}\n   *         Will be `true` if the value is a DOM element, `false` otherwise.\n   */\n\n  function isEl(value) {\n    return isObject(value) && value.nodeType === 1;\n  }\n  /**\n   * Determines if the current DOM is embedded in an iframe.\n   *\n   * @return {boolean}\n   *         Will be `true` if the DOM is embedded in an iframe, `false`\n   *         otherwise.\n   */\n\n  function isInFrame() {\n    // We need a try/catch here because Safari will throw errors when attempting\n    // to get either `parent` or `self`\n    try {\n      return window$1.parent !== window$1.self;\n    } catch (x) {\n      return true;\n    }\n  }\n  /**\n   * Creates functions to query the DOM using a given method.\n   *\n   * @private\n   * @param   {string} method\n   *          The method to create the query with.\n   *\n   * @return  {Function}\n   *          The query method\n   */\n\n  function createQuerier(method) {\n    return function (selector, context) {\n      if (!isNonBlankString(selector)) {\n        return document[method](null);\n      }\n\n      if (isNonBlankString(context)) {\n        context = document.querySelector(context);\n      }\n\n      var ctx = isEl(context) ? context : document;\n      return ctx[method] && ctx[method](selector);\n    };\n  }\n  /**\n   * Creates an element and applies properties, attributes, and inserts content.\n   *\n   * @param  {string} [tagName='div']\n   *         Name of tag to be created.\n   *\n   * @param  {Object} [properties={}]\n   *         Element properties to be applied.\n   *\n   * @param  {Object} [attributes={}]\n   *         Element attributes to be applied.\n   *\n   * @param {module:dom~ContentDescriptor} content\n   *        A content descriptor object.\n   *\n   * @return {Element}\n   *         The element that was created.\n   */\n\n\n  function createEl(tagName, properties, attributes, content) {\n    if (tagName === void 0) {\n      tagName = 'div';\n    }\n\n    if (properties === void 0) {\n      properties = {};\n    }\n\n    if (attributes === void 0) {\n      attributes = {};\n    }\n\n    var el = document.createElement(tagName);\n    Object.getOwnPropertyNames(properties).forEach(function (propName) {\n      var val = properties[propName]; // See #2176\n      // We originally were accepting both properties and attributes in the\n      // same object, but that doesn't work so well.\n\n      if (propName.indexOf('aria-') !== -1 || propName === 'role' || propName === 'type') {\n        log.warn(tsml(_templateObject(), propName, val));\n        el.setAttribute(propName, val); // Handle textContent since it's not supported everywhere and we have a\n        // method for it.\n      } else if (propName === 'textContent') {\n        textContent(el, val);\n      } else {\n        el[propName] = val;\n      }\n    });\n    Object.getOwnPropertyNames(attributes).forEach(function (attrName) {\n      el.setAttribute(attrName, attributes[attrName]);\n    });\n\n    if (content) {\n      appendContent(el, content);\n    }\n\n    return el;\n  }\n  /**\n   * Injects text into an element, replacing any existing contents entirely.\n   *\n   * @param  {Element} el\n   *         The element to add text content into\n   *\n   * @param  {string} text\n   *         The text content to add.\n   *\n   * @return {Element}\n   *         The element with added text content.\n   */\n\n  function textContent(el, text) {\n    if (typeof el.textContent === 'undefined') {\n      el.innerText = text;\n    } else {\n      el.textContent = text;\n    }\n\n    return el;\n  }\n  /**\n   * Insert an element as the first child node of another\n   *\n   * @param {Element} child\n   *        Element to insert\n   *\n   * @param {Element} parent\n   *        Element to insert child into\n   */\n\n  function prependTo(child, parent) {\n    if (parent.firstChild) {\n      parent.insertBefore(child, parent.firstChild);\n    } else {\n      parent.appendChild(child);\n    }\n  }\n  /**\n   * Check if an element has a class name.\n   *\n   * @param  {Element} element\n   *         Element to check\n   *\n   * @param  {string} classToCheck\n   *         Class name to check for\n   *\n   * @return {boolean}\n   *         Will be `true` if the element has a class, `false` otherwise.\n   *\n   * @throws {Error}\n   *         Throws an error if `classToCheck` has white space.\n   */\n\n  function hasClass(element, classToCheck) {\n    throwIfWhitespace(classToCheck);\n\n    if (element.classList) {\n      return element.classList.contains(classToCheck);\n    }\n\n    return classRegExp(classToCheck).test(element.className);\n  }\n  /**\n   * Add a class name to an element.\n   *\n   * @param  {Element} element\n   *         Element to add class name to.\n   *\n   * @param  {string} classToAdd\n   *         Class name to add.\n   *\n   * @return {Element}\n   *         The DOM element with the added class name.\n   */\n\n  function addClass(element, classToAdd) {\n    if (element.classList) {\n      element.classList.add(classToAdd); // Don't need to `throwIfWhitespace` here because `hasElClass` will do it\n      // in the case of classList not being supported.\n    } else if (!hasClass(element, classToAdd)) {\n      element.className = (element.className + ' ' + classToAdd).trim();\n    }\n\n    return element;\n  }\n  /**\n   * Remove a class name from an element.\n   *\n   * @param  {Element} element\n   *         Element to remove a class name from.\n   *\n   * @param  {string} classToRemove\n   *         Class name to remove\n   *\n   * @return {Element}\n   *         The DOM element with class name removed.\n   */\n\n  function removeClass(element, classToRemove) {\n    if (element.classList) {\n      element.classList.remove(classToRemove);\n    } else {\n      throwIfWhitespace(classToRemove);\n      element.className = element.className.split(/\\s+/).filter(function (c) {\n        return c !== classToRemove;\n      }).join(' ');\n    }\n\n    return element;\n  }\n  /**\n   * The callback definition for toggleClass.\n   *\n   * @callback module:dom~PredicateCallback\n   * @param    {Element} element\n   *           The DOM element of the Component.\n   *\n   * @param    {string} classToToggle\n   *           The `className` that wants to be toggled\n   *\n   * @return   {boolean|undefined}\n   *           If `true` is returned, the `classToToggle` will be added to the\n   *           `element`. If `false`, the `classToToggle` will be removed from\n   *           the `element`. If `undefined`, the callback will be ignored.\n   */\n\n  /**\n   * Adds or removes a class name to/from an element depending on an optional\n   * condition or the presence/absence of the class name.\n   *\n   * @param  {Element} element\n   *         The element to toggle a class name on.\n   *\n   * @param  {string} classToToggle\n   *         The class that should be toggled.\n   *\n   * @param  {boolean|module:dom~PredicateCallback} [predicate]\n   *         See the return value for {@link module:dom~PredicateCallback}\n   *\n   * @return {Element}\n   *         The element with a class that has been toggled.\n   */\n\n  function toggleClass(element, classToToggle, predicate) {\n    // This CANNOT use `classList` internally because IE11 does not support the\n    // second parameter to the `classList.toggle()` method! Which is fine because\n    // `classList` will be used by the add/remove functions.\n    var has = hasClass(element, classToToggle);\n\n    if (typeof predicate === 'function') {\n      predicate = predicate(element, classToToggle);\n    }\n\n    if (typeof predicate !== 'boolean') {\n      predicate = !has;\n    } // If the necessary class operation matches the current state of the\n    // element, no action is required.\n\n\n    if (predicate === has) {\n      return;\n    }\n\n    if (predicate) {\n      addClass(element, classToToggle);\n    } else {\n      removeClass(element, classToToggle);\n    }\n\n    return element;\n  }\n  /**\n   * Apply attributes to an HTML element.\n   *\n   * @param {Element} el\n   *        Element to add attributes to.\n   *\n   * @param {Object} [attributes]\n   *        Attributes to be applied.\n   */\n\n  function setAttributes(el, attributes) {\n    Object.getOwnPropertyNames(attributes).forEach(function (attrName) {\n      var attrValue = attributes[attrName];\n\n      if (attrValue === null || typeof attrValue === 'undefined' || attrValue === false) {\n        el.removeAttribute(attrName);\n      } else {\n        el.setAttribute(attrName, attrValue === true ? '' : attrValue);\n      }\n    });\n  }\n  /**\n   * Get an element's attribute values, as defined on the HTML tag.\n   *\n   * Attributes are not the same as properties. They're defined on the tag\n   * or with setAttribute.\n   *\n   * @param  {Element} tag\n   *         Element from which to get tag attributes.\n   *\n   * @return {Object}\n   *         All attributes of the element. Boolean attributes will be `true` or\n   *         `false`, others will be strings.\n   */\n\n  function getAttributes(tag) {\n    var obj = {}; // known boolean attributes\n    // we can check for matching boolean properties, but not all browsers\n    // and not all tags know about these attributes, so, we still want to check them manually\n\n    var knownBooleans = ',' + 'autoplay,controls,playsinline,loop,muted,default,defaultMuted' + ',';\n\n    if (tag && tag.attributes && tag.attributes.length > 0) {\n      var attrs = tag.attributes;\n\n      for (var i = attrs.length - 1; i >= 0; i--) {\n        var attrName = attrs[i].name;\n        var attrVal = attrs[i].value; // check for known booleans\n        // the matching element property will return a value for typeof\n\n        if (typeof tag[attrName] === 'boolean' || knownBooleans.indexOf(',' + attrName + ',') !== -1) {\n          // the value of an included boolean attribute is typically an empty\n          // string ('') which would equal false if we just check for a false value.\n          // we also don't want support bad code like autoplay='false'\n          attrVal = attrVal !== null ? true : false;\n        }\n\n        obj[attrName] = attrVal;\n      }\n    }\n\n    return obj;\n  }\n  /**\n   * Get the value of an element's attribute.\n   *\n   * @param {Element} el\n   *        A DOM element.\n   *\n   * @param {string} attribute\n   *        Attribute to get the value of.\n   *\n   * @return {string}\n   *         The value of the attribute.\n   */\n\n  function getAttribute(el, attribute) {\n    return el.getAttribute(attribute);\n  }\n  /**\n   * Set the value of an element's attribute.\n   *\n   * @param {Element} el\n   *        A DOM element.\n   *\n   * @param {string} attribute\n   *        Attribute to set.\n   *\n   * @param {string} value\n   *        Value to set the attribute to.\n   */\n\n  function setAttribute(el, attribute, value) {\n    el.setAttribute(attribute, value);\n  }\n  /**\n   * Remove an element's attribute.\n   *\n   * @param {Element} el\n   *        A DOM element.\n   *\n   * @param {string} attribute\n   *        Attribute to remove.\n   */\n\n  function removeAttribute(el, attribute) {\n    el.removeAttribute(attribute);\n  }\n  /**\n   * Attempt to block the ability to select text.\n   */\n\n  function blockTextSelection() {\n    document.body.focus();\n\n    document.onselectstart = function () {\n      return false;\n    };\n  }\n  /**\n   * Turn off text selection blocking.\n   */\n\n  function unblockTextSelection() {\n    document.onselectstart = function () {\n      return true;\n    };\n  }\n  /**\n   * Identical to the native `getBoundingClientRect` function, but ensures that\n   * the method is supported at all (it is in all browsers we claim to support)\n   * and that the element is in the DOM before continuing.\n   *\n   * This wrapper function also shims properties which are not provided by some\n   * older browsers (namely, IE8).\n   *\n   * Additionally, some browsers do not support adding properties to a\n   * `ClientRect`/`DOMRect` object; so, we shallow-copy it with the standard\n   * properties (except `x` and `y` which are not widely supported). This helps\n   * avoid implementations where keys are non-enumerable.\n   *\n   * @param  {Element} el\n   *         Element whose `ClientRect` we want to calculate.\n   *\n   * @return {Object|undefined}\n   *         Always returns a plain object - or `undefined` if it cannot.\n   */\n\n  function getBoundingClientRect(el) {\n    if (el && el.getBoundingClientRect && el.parentNode) {\n      var rect = el.getBoundingClientRect();\n      var result = {};\n      ['bottom', 'height', 'left', 'right', 'top', 'width'].forEach(function (k) {\n        if (rect[k] !== undefined) {\n          result[k] = rect[k];\n        }\n      });\n\n      if (!result.height) {\n        result.height = parseFloat(computedStyle(el, 'height'));\n      }\n\n      if (!result.width) {\n        result.width = parseFloat(computedStyle(el, 'width'));\n      }\n\n      return result;\n    }\n  }\n  /**\n   * Represents the position of a DOM element on the page.\n   *\n   * @typedef  {Object} module:dom~Position\n   *\n   * @property {number} left\n   *           Pixels to the left.\n   *\n   * @property {number} top\n   *           Pixels from the top.\n   */\n\n  /**\n   * Get the position of an element in the DOM.\n   *\n   * Uses `getBoundingClientRect` technique from John Resig.\n   *\n   * @see http://ejohn.org/blog/getboundingclientrect-is-awesome/\n   *\n   * @param  {Element} el\n   *         Element from which to get offset.\n   *\n   * @return {module:dom~Position}\n   *         The position of the element that was passed in.\n   */\n\n  function findPosition(el) {\n    var box;\n\n    if (el.getBoundingClientRect && el.parentNode) {\n      box = el.getBoundingClientRect();\n    }\n\n    if (!box) {\n      return {\n        left: 0,\n        top: 0\n      };\n    }\n\n    var docEl = document.documentElement;\n    var body = document.body;\n    var clientLeft = docEl.clientLeft || body.clientLeft || 0;\n    var scrollLeft = window$1.pageXOffset || body.scrollLeft;\n    var left = box.left + scrollLeft - clientLeft;\n    var clientTop = docEl.clientTop || body.clientTop || 0;\n    var scrollTop = window$1.pageYOffset || body.scrollTop;\n    var top = box.top + scrollTop - clientTop; // Android sometimes returns slightly off decimal values, so need to round\n\n    return {\n      left: Math.round(left),\n      top: Math.round(top)\n    };\n  }\n  /**\n   * Represents x and y coordinates for a DOM element or mouse pointer.\n   *\n   * @typedef  {Object} module:dom~Coordinates\n   *\n   * @property {number} x\n   *           x coordinate in pixels\n   *\n   * @property {number} y\n   *           y coordinate in pixels\n   */\n\n  /**\n   * Get the pointer position within an element.\n   *\n   * The base on the coordinates are the bottom left of the element.\n   *\n   * @param  {Element} el\n   *         Element on which to get the pointer position on.\n   *\n   * @param  {EventTarget~Event} event\n   *         Event object.\n   *\n   * @return {module:dom~Coordinates}\n   *         A coordinates object corresponding to the mouse position.\n   *\n   */\n\n  function getPointerPosition(el, event) {\n    var position = {};\n    var box = findPosition(el);\n    var boxW = el.offsetWidth;\n    var boxH = el.offsetHeight;\n    var boxY = box.top;\n    var boxX = box.left;\n    var pageY = event.pageY;\n    var pageX = event.pageX;\n\n    if (event.changedTouches) {\n      pageX = event.changedTouches[0].pageX;\n      pageY = event.changedTouches[0].pageY;\n    }\n\n    position.y = Math.max(0, Math.min(1, (boxY - pageY + boxH) / boxH));\n    position.x = Math.max(0, Math.min(1, (pageX - boxX) / boxW));\n    return position;\n  }\n  /**\n   * Determines, via duck typing, whether or not a value is a text node.\n   *\n   * @param  {Mixed} value\n   *         Check if this value is a text node.\n   *\n   * @return {boolean}\n   *         Will be `true` if the value is a text node, `false` otherwise.\n   */\n\n  function isTextNode(value) {\n    return isObject(value) && value.nodeType === 3;\n  }\n  /**\n   * Empties the contents of an element.\n   *\n   * @param  {Element} el\n   *         The element to empty children from\n   *\n   * @return {Element}\n   *         The element with no children\n   */\n\n  function emptyEl(el) {\n    while (el.firstChild) {\n      el.removeChild(el.firstChild);\n    }\n\n    return el;\n  }\n  /**\n   * This is a mixed value that describes content to be injected into the DOM\n   * via some method. It can be of the following types:\n   *\n   * Type       | Description\n   * -----------|-------------\n   * `string`   | The value will be normalized into a text node.\n   * `Element`  | The value will be accepted as-is.\n   * `TextNode` | The value will be accepted as-is.\n   * `Array`    | A one-dimensional array of strings, elements, text nodes, or functions. These functions should return a string, element, or text node (any other return value, like an array, will be ignored).\n   * `Function` | A function, which is expected to return a string, element, text node, or array - any of the other possible values described above. This means that a content descriptor could be a function that returns an array of functions, but those second-level functions must return strings, elements, or text nodes.\n   *\n   * @typedef {string|Element|TextNode|Array|Function} module:dom~ContentDescriptor\n   */\n\n  /**\n   * Normalizes content for eventual insertion into the DOM.\n   *\n   * This allows a wide range of content definition methods, but helps protect\n   * from falling into the trap of simply writing to `innerHTML`, which could\n   * be an XSS concern.\n   *\n   * The content for an element can be passed in multiple types and\n   * combinations, whose behavior is as follows:\n   *\n   * @param {module:dom~ContentDescriptor} content\n   *        A content descriptor value.\n   *\n   * @return {Array}\n   *         All of the content that was passed in, normalized to an array of\n   *         elements or text nodes.\n   */\n\n  function normalizeContent(content) {\n    // First, invoke content if it is a function. If it produces an array,\n    // that needs to happen before normalization.\n    if (typeof content === 'function') {\n      content = content();\n    } // Next up, normalize to an array, so one or many items can be normalized,\n    // filtered, and returned.\n\n\n    return (Array.isArray(content) ? content : [content]).map(function (value) {\n      // First, invoke value if it is a function to produce a new value,\n      // which will be subsequently normalized to a Node of some kind.\n      if (typeof value === 'function') {\n        value = value();\n      }\n\n      if (isEl(value) || isTextNode(value)) {\n        return value;\n      }\n\n      if (typeof value === 'string' && /\\S/.test(value)) {\n        return document.createTextNode(value);\n      }\n    }).filter(function (value) {\n      return value;\n    });\n  }\n  /**\n   * Normalizes and appends content to an element.\n   *\n   * @param  {Element} el\n   *         Element to append normalized content to.\n   *\n   * @param {module:dom~ContentDescriptor} content\n   *        A content descriptor value.\n   *\n   * @return {Element}\n   *         The element with appended normalized content.\n   */\n\n  function appendContent(el, content) {\n    normalizeContent(content).forEach(function (node) {\n      return el.appendChild(node);\n    });\n    return el;\n  }\n  /**\n   * Normalizes and inserts content into an element; this is identical to\n   * `appendContent()`, except it empties the element first.\n   *\n   * @param {Element} el\n   *        Element to insert normalized content into.\n   *\n   * @param {module:dom~ContentDescriptor} content\n   *        A content descriptor value.\n   *\n   * @return {Element}\n   *         The element with inserted normalized content.\n   */\n\n  function insertContent(el, content) {\n    return appendContent(emptyEl(el), content);\n  }\n  /**\n   * Check if an event was a single left click.\n   *\n   * @param  {EventTarget~Event} event\n   *         Event object.\n   *\n   * @return {boolean}\n   *         Will be `true` if a single left click, `false` otherwise.\n   */\n\n  function isSingleLeftClick(event) {\n    // Note: if you create something draggable, be sure to\n    // call it on both `mousedown` and `mousemove` event,\n    // otherwise `mousedown` should be enough for a button\n    if (event.button === undefined && event.buttons === undefined) {\n      // Why do we need `buttons` ?\n      // Because, middle mouse sometimes have this:\n      // e.button === 0 and e.buttons === 4\n      // Furthermore, we want to prevent combination click, something like\n      // HOLD middlemouse then left click, that would be\n      // e.button === 0, e.buttons === 5\n      // just `button` is not gonna work\n      // Alright, then what this block does ?\n      // this is for chrome `simulate mobile devices`\n      // I want to support this as well\n      return true;\n    }\n\n    if (event.button === 0 && event.buttons === undefined) {\n      // Touch screen, sometimes on some specific device, `buttons`\n      // doesn't have anything (safari on ios, blackberry...)\n      return true;\n    }\n\n    if (event.button !== 0 || event.buttons !== 1) {\n      // This is the reason we have those if else block above\n      // if any special case we can catch and let it slide\n      // we do it above, when get to here, this definitely\n      // is-not-left-click\n      return false;\n    }\n\n    return true;\n  }\n  /**\n   * Finds a single DOM element matching `selector` within the optional\n   * `context` of another DOM element (defaulting to `document`).\n   *\n   * @param  {string} selector\n   *         A valid CSS selector, which will be passed to `querySelector`.\n   *\n   * @param  {Element|String} [context=document]\n   *         A DOM element within which to query. Can also be a selector\n   *         string in which case the first matching element will be used\n   *         as context. If missing (or no element matches selector), falls\n   *         back to `document`.\n   *\n   * @return {Element|null}\n   *         The element that was found or null.\n   */\n\n  var $ = createQuerier('querySelector');\n  /**\n   * Finds a all DOM elements matching `selector` within the optional\n   * `context` of another DOM element (defaulting to `document`).\n   *\n   * @param  {string} selector\n   *         A valid CSS selector, which will be passed to `querySelectorAll`.\n   *\n   * @param  {Element|String} [context=document]\n   *         A DOM element within which to query. Can also be a selector\n   *         string in which case the first matching element will be used\n   *         as context. If missing (or no element matches selector), falls\n   *         back to `document`.\n   *\n   * @return {NodeList}\n   *         A element list of elements that were found. Will be empty if none\n   *         were found.\n   *\n   */\n\n  var $$ = createQuerier('querySelectorAll');\n\n  var Dom = /*#__PURE__*/Object.freeze({\n    isReal: isReal,\n    isEl: isEl,\n    isInFrame: isInFrame,\n    createEl: createEl,\n    textContent: textContent,\n    prependTo: prependTo,\n    hasClass: hasClass,\n    addClass: addClass,\n    removeClass: removeClass,\n    toggleClass: toggleClass,\n    setAttributes: setAttributes,\n    getAttributes: getAttributes,\n    getAttribute: getAttribute,\n    setAttribute: setAttribute,\n    removeAttribute: removeAttribute,\n    blockTextSelection: blockTextSelection,\n    unblockTextSelection: unblockTextSelection,\n    getBoundingClientRect: getBoundingClientRect,\n    findPosition: findPosition,\n    getPointerPosition: getPointerPosition,\n    isTextNode: isTextNode,\n    emptyEl: emptyEl,\n    normalizeContent: normalizeContent,\n    appendContent: appendContent,\n    insertContent: insertContent,\n    isSingleLeftClick: isSingleLeftClick,\n    $: $,\n    $$: $$\n  });\n\n  /**\n   * @file guid.js\n   * @module guid\n   */\n\n  /**\n   * Unique ID for an element or function\n   * @type {Number}\n   */\n  var _guid = 1;\n  /**\n   * Get a unique auto-incrementing ID by number that has not been returned before.\n   *\n   * @return {number}\n   *         A new unique ID.\n   */\n\n  function newGUID() {\n    return _guid++;\n  }\n\n  /**\n   * @file dom-data.js\n   * @module dom-data\n   */\n  /**\n   * Element Data Store.\n   *\n   * Allows for binding data to an element without putting it directly on the\n   * element. Ex. Event listeners are stored here.\n   * (also from jsninja.com, slightly modified and updated for closure compiler)\n   *\n   * @type {Object}\n   * @private\n   */\n\n  var elData = {};\n  /*\n   * Unique attribute name to store an element's guid in\n   *\n   * @type {String}\n   * @constant\n   * @private\n   */\n\n  var elIdAttr = 'vdata' + new Date().getTime();\n  /**\n   * Returns the cache object where data for an element is stored\n   *\n   * @param {Element} el\n   *        Element to store data for.\n   *\n   * @return {Object}\n   *         The cache object for that el that was passed in.\n   */\n\n  function getData(el) {\n    var id = el[elIdAttr];\n\n    if (!id) {\n      id = el[elIdAttr] = newGUID();\n    }\n\n    if (!elData[id]) {\n      elData[id] = {};\n    }\n\n    return elData[id];\n  }\n  /**\n   * Returns whether or not an element has cached data\n   *\n   * @param {Element} el\n   *        Check if this element has cached data.\n   *\n   * @return {boolean}\n   *         - True if the DOM element has cached data.\n   *         - False otherwise.\n   */\n\n  function hasData(el) {\n    var id = el[elIdAttr];\n\n    if (!id) {\n      return false;\n    }\n\n    return !!Object.getOwnPropertyNames(elData[id]).length;\n  }\n  /**\n   * Delete data for the element from the cache and the guid attr from getElementById\n   *\n   * @param {Element} el\n   *        Remove cached data for this element.\n   */\n\n  function removeData(el) {\n    var id = el[elIdAttr];\n\n    if (!id) {\n      return;\n    } // Remove all stored data\n\n\n    delete elData[id]; // Remove the elIdAttr property from the DOM node\n\n    try {\n      delete el[elIdAttr];\n    } catch (e) {\n      if (el.removeAttribute) {\n        el.removeAttribute(elIdAttr);\n      } else {\n        // IE doesn't appear to support removeAttribute on the document element\n        el[elIdAttr] = null;\n      }\n    }\n  }\n\n  /**\n   * @file events.js. An Event System (John Resig - Secrets of a JS Ninja http://jsninja.com/)\n   * (Original book version wasn't completely usable, so fixed some things and made Closure Compiler compatible)\n   * This should work very similarly to jQuery's events, however it's based off the book version which isn't as\n   * robust as jquery's, so there's probably some differences.\n   *\n   * @file events.js\n   * @module events\n   */\n  /**\n   * Clean up the listener cache and dispatchers\n   *\n   * @param {Element|Object} elem\n   *        Element to clean up\n   *\n   * @param {string} type\n   *        Type of event to clean up\n   */\n\n  function _cleanUpEvents(elem, type) {\n    var data = getData(elem); // Remove the events of a particular type if there are none left\n\n    if (data.handlers[type].length === 0) {\n      delete data.handlers[type]; // data.handlers[type] = null;\n      // Setting to null was causing an error with data.handlers\n      // Remove the meta-handler from the element\n\n      if (elem.removeEventListener) {\n        elem.removeEventListener(type, data.dispatcher, false);\n      } else if (elem.detachEvent) {\n        elem.detachEvent('on' + type, data.dispatcher);\n      }\n    } // Remove the events object if there are no types left\n\n\n    if (Object.getOwnPropertyNames(data.handlers).length <= 0) {\n      delete data.handlers;\n      delete data.dispatcher;\n      delete data.disabled;\n    } // Finally remove the element data if there is no data left\n\n\n    if (Object.getOwnPropertyNames(data).length === 0) {\n      removeData(elem);\n    }\n  }\n  /**\n   * Loops through an array of event types and calls the requested method for each type.\n   *\n   * @param {Function} fn\n   *        The event method we want to use.\n   *\n   * @param {Element|Object} elem\n   *        Element or object to bind listeners to\n   *\n   * @param {string} type\n   *        Type of event to bind to.\n   *\n   * @param {EventTarget~EventListener} callback\n   *        Event listener.\n   */\n\n\n  function _handleMultipleEvents(fn, elem, types, callback) {\n    types.forEach(function (type) {\n      // Call the event method for each one of the types\n      fn(elem, type, callback);\n    });\n  }\n  /**\n   * Fix a native event to have standard property values\n   *\n   * @param {Object} event\n   *        Event object to fix.\n   *\n   * @return {Object}\n   *         Fixed event object.\n   */\n\n\n  function fixEvent(event) {\n    function returnTrue() {\n      return true;\n    }\n\n    function returnFalse() {\n      return false;\n    } // Test if fixing up is needed\n    // Used to check if !event.stopPropagation instead of isPropagationStopped\n    // But native events return true for stopPropagation, but don't have\n    // other expected methods like isPropagationStopped. Seems to be a problem\n    // with the Javascript Ninja code. So we're just overriding all events now.\n\n\n    if (!event || !event.isPropagationStopped) {\n      var old = event || window$1.event;\n      event = {}; // Clone the old object so that we can modify the values event = {};\n      // IE8 Doesn't like when you mess with native event properties\n      // Firefox returns false for event.hasOwnProperty('type') and other props\n      //  which makes copying more difficult.\n      // TODO: Probably best to create a whitelist of event props\n\n      for (var key in old) {\n        // Safari 6.0.3 warns you if you try to copy deprecated layerX/Y\n        // Chrome warns you if you try to copy deprecated keyboardEvent.keyLocation\n        // and webkitMovementX/Y\n        if (key !== 'layerX' && key !== 'layerY' && key !== 'keyLocation' && key !== 'webkitMovementX' && key !== 'webkitMovementY') {\n          // Chrome 32+ warns if you try to copy deprecated returnValue, but\n          // we still want to if preventDefault isn't supported (IE8).\n          if (!(key === 'returnValue' && old.preventDefault)) {\n            event[key] = old[key];\n          }\n        }\n      } // The event occurred on this element\n\n\n      if (!event.target) {\n        event.target = event.srcElement || document;\n      } // Handle which other element the event is related to\n\n\n      if (!event.relatedTarget) {\n        event.relatedTarget = event.fromElement === event.target ? event.toElement : event.fromElement;\n      } // Stop the default browser action\n\n\n      event.preventDefault = function () {\n        if (old.preventDefault) {\n          old.preventDefault();\n        }\n\n        event.returnValue = false;\n        old.returnValue = false;\n        event.defaultPrevented = true;\n      };\n\n      event.defaultPrevented = false; // Stop the event from bubbling\n\n      event.stopPropagation = function () {\n        if (old.stopPropagation) {\n          old.stopPropagation();\n        }\n\n        event.cancelBubble = true;\n        old.cancelBubble = true;\n        event.isPropagationStopped = returnTrue;\n      };\n\n      event.isPropagationStopped = returnFalse; // Stop the event from bubbling and executing other handlers\n\n      event.stopImmediatePropagation = function () {\n        if (old.stopImmediatePropagation) {\n          old.stopImmediatePropagation();\n        }\n\n        event.isImmediatePropagationStopped = returnTrue;\n        event.stopPropagation();\n      };\n\n      event.isImmediatePropagationStopped = returnFalse; // Handle mouse position\n\n      if (event.clientX !== null && event.clientX !== undefined) {\n        var doc = document.documentElement;\n        var body = document.body;\n        event.pageX = event.clientX + (doc && doc.scrollLeft || body && body.scrollLeft || 0) - (doc && doc.clientLeft || body && body.clientLeft || 0);\n        event.pageY = event.clientY + (doc && doc.scrollTop || body && body.scrollTop || 0) - (doc && doc.clientTop || body && body.clientTop || 0);\n      } // Handle key presses\n\n\n      event.which = event.charCode || event.keyCode; // Fix button for mouse clicks:\n      // 0 == left; 1 == middle; 2 == right\n\n      if (event.button !== null && event.button !== undefined) {\n        // The following is disabled because it does not pass videojs-standard\n        // and... yikes.\n\n        /* eslint-disable */\n        event.button = event.button & 1 ? 0 : event.button & 4 ? 1 : event.button & 2 ? 2 : 0;\n        /* eslint-enable */\n      }\n    } // Returns fixed-up instance\n\n\n    return event;\n  }\n  /**\n   * Whether passive event listeners are supported\n   */\n\n  var _supportsPassive = false;\n\n  (function () {\n    try {\n      var opts = Object.defineProperty({}, 'passive', {\n        get: function get() {\n          _supportsPassive = true;\n        }\n      });\n      window$1.addEventListener('test', null, opts);\n      window$1.removeEventListener('test', null, opts);\n    } catch (e) {// disregard\n    }\n  })();\n  /**\n   * Touch events Chrome expects to be passive\n   */\n\n\n  var passiveEvents = ['touchstart', 'touchmove'];\n  /**\n   * Add an event listener to element\n   * It stores the handler function in a separate cache object\n   * and adds a generic handler to the element's event,\n   * along with a unique id (guid) to the element.\n   *\n   * @param {Element|Object} elem\n   *        Element or object to bind listeners to\n   *\n   * @param {string|string[]} type\n   *        Type of event to bind to.\n   *\n   * @param {EventTarget~EventListener} fn\n   *        Event listener.\n   */\n\n  function on(elem, type, fn) {\n    if (Array.isArray(type)) {\n      return _handleMultipleEvents(on, elem, type, fn);\n    }\n\n    var data = getData(elem); // We need a place to store all our handler data\n\n    if (!data.handlers) {\n      data.handlers = {};\n    }\n\n    if (!data.handlers[type]) {\n      data.handlers[type] = [];\n    }\n\n    if (!fn.guid) {\n      fn.guid = newGUID();\n    }\n\n    data.handlers[type].push(fn);\n\n    if (!data.dispatcher) {\n      data.disabled = false;\n\n      data.dispatcher = function (event, hash) {\n        if (data.disabled) {\n          return;\n        }\n\n        event = fixEvent(event);\n        var handlers = data.handlers[event.type];\n\n        if (handlers) {\n          // Copy handlers so if handlers are added/removed during the process it doesn't throw everything off.\n          var handlersCopy = handlers.slice(0);\n\n          for (var m = 0, n = handlersCopy.length; m < n; m++) {\n            if (event.isImmediatePropagationStopped()) {\n              break;\n            } else {\n              try {\n                handlersCopy[m].call(elem, event, hash);\n              } catch (e) {\n                log.error(e);\n              }\n            }\n          }\n        }\n      };\n    }\n\n    if (data.handlers[type].length === 1) {\n      if (elem.addEventListener) {\n        var options = false;\n\n        if (_supportsPassive && passiveEvents.indexOf(type) > -1) {\n          options = {\n            passive: true\n          };\n        }\n\n        elem.addEventListener(type, data.dispatcher, options);\n      } else if (elem.attachEvent) {\n        elem.attachEvent('on' + type, data.dispatcher);\n      }\n    }\n  }\n  /**\n   * Removes event listeners from an element\n   *\n   * @param {Element|Object} elem\n   *        Object to remove listeners from.\n   *\n   * @param {string|string[]} [type]\n   *        Type of listener to remove. Don't include to remove all events from element.\n   *\n   * @param {EventTarget~EventListener} [fn]\n   *        Specific listener to remove. Don't include to remove listeners for an event\n   *        type.\n   */\n\n  function off(elem, type, fn) {\n    // Don't want to add a cache object through getElData if not needed\n    if (!hasData(elem)) {\n      return;\n    }\n\n    var data = getData(elem); // If no events exist, nothing to unbind\n\n    if (!data.handlers) {\n      return;\n    }\n\n    if (Array.isArray(type)) {\n      return _handleMultipleEvents(off, elem, type, fn);\n    } // Utility function\n\n\n    var removeType = function removeType(el, t) {\n      data.handlers[t] = [];\n\n      _cleanUpEvents(el, t);\n    }; // Are we removing all bound events?\n\n\n    if (type === undefined) {\n      for (var t in data.handlers) {\n        if (Object.prototype.hasOwnProperty.call(data.handlers || {}, t)) {\n          removeType(elem, t);\n        }\n      }\n\n      return;\n    }\n\n    var handlers = data.handlers[type]; // If no handlers exist, nothing to unbind\n\n    if (!handlers) {\n      return;\n    } // If no listener was provided, remove all listeners for type\n\n\n    if (!fn) {\n      removeType(elem, type);\n      return;\n    } // We're only removing a single handler\n\n\n    if (fn.guid) {\n      for (var n = 0; n < handlers.length; n++) {\n        if (handlers[n].guid === fn.guid) {\n          handlers.splice(n--, 1);\n        }\n      }\n    }\n\n    _cleanUpEvents(elem, type);\n  }\n  /**\n   * Trigger an event for an element\n   *\n   * @param {Element|Object} elem\n   *        Element to trigger an event on\n   *\n   * @param {EventTarget~Event|string} event\n   *        A string (the type) or an event object with a type attribute\n   *\n   * @param {Object} [hash]\n   *        data hash to pass along with the event\n   *\n   * @return {boolean|undefined}\n   *         Returns the opposite of `defaultPrevented` if default was\n   *         prevented. Otherwise, returns `undefined`\n   */\n\n  function trigger(elem, event, hash) {\n    // Fetches element data and a reference to the parent (for bubbling).\n    // Don't want to add a data object to cache for every parent,\n    // so checking hasElData first.\n    var elemData = hasData(elem) ? getData(elem) : {};\n    var parent = elem.parentNode || elem.ownerDocument; // type = event.type || event,\n    // handler;\n    // If an event name was passed as a string, creates an event out of it\n\n    if (typeof event === 'string') {\n      event = {\n        type: event,\n        target: elem\n      };\n    } else if (!event.target) {\n      event.target = elem;\n    } // Normalizes the event properties.\n\n\n    event = fixEvent(event); // If the passed element has a dispatcher, executes the established handlers.\n\n    if (elemData.dispatcher) {\n      elemData.dispatcher.call(elem, event, hash);\n    } // Unless explicitly stopped or the event does not bubble (e.g. media events)\n    // recursively calls this function to bubble the event up the DOM.\n\n\n    if (parent && !event.isPropagationStopped() && event.bubbles === true) {\n      trigger.call(null, parent, event, hash); // If at the top of the DOM, triggers the default action unless disabled.\n    } else if (!parent && !event.defaultPrevented) {\n      var targetData = getData(event.target); // Checks if the target has a default action for this event.\n\n      if (event.target[event.type]) {\n        // Temporarily disables event dispatching on the target as we have already executed the handler.\n        targetData.disabled = true; // Executes the default action.\n\n        if (typeof event.target[event.type] === 'function') {\n          event.target[event.type]();\n        } // Re-enables event dispatching.\n\n\n        targetData.disabled = false;\n      }\n    } // Inform the triggerer if the default was prevented by returning false\n\n\n    return !event.defaultPrevented;\n  }\n  /**\n   * Trigger a listener only once for an event.\n   *\n   * @param {Element|Object} elem\n   *        Element or object to bind to.\n   *\n   * @param {string|string[]} type\n   *        Name/type of event\n   *\n   * @param {Event~EventListener} fn\n   *        Event listener function\n   */\n\n  function one(elem, type, fn) {\n    if (Array.isArray(type)) {\n      return _handleMultipleEvents(one, elem, type, fn);\n    }\n\n    var func = function func() {\n      off(elem, type, func);\n      fn.apply(this, arguments);\n    }; // copy the guid to the new function so it can removed using the original function's ID\n\n\n    func.guid = fn.guid = fn.guid || newGUID();\n    on(elem, type, func);\n  }\n\n  var Events = /*#__PURE__*/Object.freeze({\n    fixEvent: fixEvent,\n    on: on,\n    off: off,\n    trigger: trigger,\n    one: one\n  });\n\n  /**\n   * @file setup.js - Functions for setting up a player without\n   * user interaction based on the data-setup `attribute` of the video tag.\n   *\n   * @module setup\n   */\n  var _windowLoaded = false;\n  var videojs;\n  /**\n   * Set up any tags that have a data-setup `attribute` when the player is started.\n   */\n\n  var autoSetup = function autoSetup() {\n    // Protect against breakage in non-browser environments and check global autoSetup option.\n    if (!isReal() || videojs.options.autoSetup === false) {\n      return;\n    }\n\n    var vids = Array.prototype.slice.call(document.getElementsByTagName('video'));\n    var audios = Array.prototype.slice.call(document.getElementsByTagName('audio'));\n    var divs = Array.prototype.slice.call(document.getElementsByTagName('video-js'));\n    var mediaEls = vids.concat(audios, divs); // Check if any media elements exist\n\n    if (mediaEls && mediaEls.length > 0) {\n      for (var i = 0, e = mediaEls.length; i < e; i++) {\n        var mediaEl = mediaEls[i]; // Check if element exists, has getAttribute func.\n\n        if (mediaEl && mediaEl.getAttribute) {\n          // Make sure this player hasn't already been set up.\n          if (mediaEl.player === undefined) {\n            var options = mediaEl.getAttribute('data-setup'); // Check if data-setup attr exists.\n            // We only auto-setup if they've added the data-setup attr.\n\n            if (options !== null) {\n              // Create new video.js instance.\n              videojs(mediaEl);\n            }\n          } // If getAttribute isn't defined, we need to wait for the DOM.\n\n        } else {\n          autoSetupTimeout(1);\n          break;\n        }\n      } // No videos were found, so keep looping unless page is finished loading.\n\n    } else if (!_windowLoaded) {\n      autoSetupTimeout(1);\n    }\n  };\n  /**\n   * Wait until the page is loaded before running autoSetup. This will be called in\n   * autoSetup if `hasLoaded` returns false.\n   *\n   * @param {number} wait\n   *        How long to wait in ms\n   *\n   * @param {module:videojs} [vjs]\n   *        The videojs library function\n   */\n\n\n  function autoSetupTimeout(wait, vjs) {\n    if (vjs) {\n      videojs = vjs;\n    }\n\n    window$1.setTimeout(autoSetup, wait);\n  }\n\n  if (isReal() && document.readyState === 'complete') {\n    _windowLoaded = true;\n  } else {\n    /**\n     * Listen for the load event on window, and set _windowLoaded to true.\n     *\n     * @listens load\n     */\n    one(window$1, 'load', function () {\n      _windowLoaded = true;\n    });\n  }\n\n  /**\n   * @file stylesheet.js\n   * @module stylesheet\n   */\n  /**\n   * Create a DOM syle element given a className for it.\n   *\n   * @param {string} className\n   *        The className to add to the created style element.\n   *\n   * @return {Element}\n   *         The element that was created.\n   */\n\n  var createStyleElement = function createStyleElement(className) {\n    var style = document.createElement('style');\n    style.className = className;\n    return style;\n  };\n  /**\n   * Add text to a DOM element.\n   *\n   * @param {Element} el\n   *        The Element to add text content to.\n   *\n   * @param {string} content\n   *        The text to add to the element.\n   */\n\n  var setTextContent = function setTextContent(el, content) {\n    if (el.styleSheet) {\n      el.styleSheet.cssText = content;\n    } else {\n      el.textContent = content;\n    }\n  };\n\n  /**\n   * @file fn.js\n   * @module fn\n   */\n  /**\n   * Bind (a.k.a proxy or context). A simple method for changing the context of\n   * a function.\n   *\n   * It also stores a unique id on the function so it can be easily removed from\n   * events.\n   *\n   * @function\n   * @param    {Mixed} context\n   *           The object to bind as scope.\n   *\n   * @param    {Function} fn\n   *           The function to be bound to a scope.\n   *\n   * @param    {number} [uid]\n   *           An optional unique ID for the function to be set\n   *\n   * @return   {Function}\n   *           The new function that will be bound into the context given\n   */\n\n  var bind = function bind(context, fn, uid) {\n    // Make sure the function has a unique ID\n    if (!fn.guid) {\n      fn.guid = newGUID();\n    } // Create the new function that changes the context\n\n\n    var bound = function bound() {\n      return fn.apply(context, arguments);\n    }; // Allow for the ability to individualize this function\n    // Needed in the case where multiple objects might share the same prototype\n    // IF both items add an event listener with the same function, then you try to remove just one\n    // it will remove both because they both have the same guid.\n    // when using this, you need to use the bind method when you remove the listener as well.\n    // currently used in text tracks\n\n\n    bound.guid = uid ? uid + '_' + fn.guid : fn.guid;\n    return bound;\n  };\n  /**\n   * Wraps the given function, `fn`, with a new function that only invokes `fn`\n   * at most once per every `wait` milliseconds.\n   *\n   * @function\n   * @param    {Function} fn\n   *           The function to be throttled.\n   *\n   * @param    {number}   wait\n   *           The number of milliseconds by which to throttle.\n   *\n   * @return   {Function}\n   */\n\n  var throttle = function throttle(fn, wait) {\n    var last = Date.now();\n\n    var throttled = function throttled() {\n      var now = Date.now();\n\n      if (now - last >= wait) {\n        fn.apply(void 0, arguments);\n        last = now;\n      }\n    };\n\n    return throttled;\n  };\n  /**\n   * Creates a debounced function that delays invoking `func` until after `wait`\n   * milliseconds have elapsed since the last time the debounced function was\n   * invoked.\n   *\n   * Inspired by lodash and underscore implementations.\n   *\n   * @function\n   * @param    {Function} func\n   *           The function to wrap with debounce behavior.\n   *\n   * @param    {number} wait\n   *           The number of milliseconds to wait after the last invocation.\n   *\n   * @param    {boolean} [immediate]\n   *           Whether or not to invoke the function immediately upon creation.\n   *\n   * @param    {Object} [context=window]\n   *           The \"context\" in which the debounced function should debounce. For\n   *           example, if this function should be tied to a Video.js player,\n   *           the player can be passed here. Alternatively, defaults to the\n   *           global `window` object.\n   *\n   * @return   {Function}\n   *           A debounced function.\n   */\n\n  var debounce = function debounce(func, wait, immediate, context) {\n    if (context === void 0) {\n      context = window$1;\n    }\n\n    var timeout;\n\n    var cancel = function cancel() {\n      context.clearTimeout(timeout);\n      timeout = null;\n    };\n    /* eslint-disable consistent-this */\n\n\n    var debounced = function debounced() {\n      var self = this;\n      var args = arguments;\n\n      var _later = function later() {\n        timeout = null;\n        _later = null;\n\n        if (!immediate) {\n          func.apply(self, args);\n        }\n      };\n\n      if (!timeout && immediate) {\n        func.apply(self, args);\n      }\n\n      context.clearTimeout(timeout);\n      timeout = context.setTimeout(_later, wait);\n    };\n    /* eslint-enable consistent-this */\n\n\n    debounced.cancel = cancel;\n    return debounced;\n  };\n\n  /**\n   * @file src/js/event-target.js\n   */\n  /**\n   * `EventTarget` is a class that can have the same API as the DOM `EventTarget`. It\n   * adds shorthand functions that wrap around lengthy functions. For example:\n   * the `on` function is a wrapper around `addEventListener`.\n   *\n   * @see [EventTarget Spec]{@link https://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-EventTarget}\n   * @class EventTarget\n   */\n\n  var EventTarget = function EventTarget() {};\n  /**\n   * A Custom DOM event.\n   *\n   * @typedef {Object} EventTarget~Event\n   * @see [Properties]{@link https://developer.mozilla.org/en-US/docs/Web/API/CustomEvent}\n   */\n\n  /**\n   * All event listeners should follow the following format.\n   *\n   * @callback EventTarget~EventListener\n   * @this {EventTarget}\n   *\n   * @param {EventTarget~Event} event\n   *        the event that triggered this function\n   *\n   * @param {Object} [hash]\n   *        hash of data sent during the event\n   */\n\n  /**\n   * An object containing event names as keys and booleans as values.\n   *\n   * > NOTE: If an event name is set to a true value here {@link EventTarget#trigger}\n   *         will have extra functionality. See that function for more information.\n   *\n   * @property EventTarget.prototype.allowedEvents_\n   * @private\n   */\n\n\n  EventTarget.prototype.allowedEvents_ = {};\n  /**\n   * Adds an `event listener` to an instance of an `EventTarget`. An `event listener` is a\n   * function that will get called when an event with a certain name gets triggered.\n   *\n   * @param {string|string[]} type\n   *        An event name or an array of event names.\n   *\n   * @param {EventTarget~EventListener} fn\n   *        The function to call with `EventTarget`s\n   */\n\n  EventTarget.prototype.on = function (type, fn) {\n    // Remove the addEventListener alias before calling Events.on\n    // so we don't get into an infinite type loop\n    var ael = this.addEventListener;\n\n    this.addEventListener = function () {};\n\n    on(this, type, fn);\n    this.addEventListener = ael;\n  };\n  /**\n   * An alias of {@link EventTarget#on}. Allows `EventTarget` to mimic\n   * the standard DOM API.\n   *\n   * @function\n   * @see {@link EventTarget#on}\n   */\n\n\n  EventTarget.prototype.addEventListener = EventTarget.prototype.on;\n  /**\n   * Removes an `event listener` for a specific event from an instance of `EventTarget`.\n   * This makes it so that the `event listener` will no longer get called when the\n   * named event happens.\n   *\n   * @param {string|string[]} type\n   *        An event name or an array of event names.\n   *\n   * @param {EventTarget~EventListener} fn\n   *        The function to remove.\n   */\n\n  EventTarget.prototype.off = function (type, fn) {\n    off(this, type, fn);\n  };\n  /**\n   * An alias of {@link EventTarget#off}. Allows `EventTarget` to mimic\n   * the standard DOM API.\n   *\n   * @function\n   * @see {@link EventTarget#off}\n   */\n\n\n  EventTarget.prototype.removeEventListener = EventTarget.prototype.off;\n  /**\n   * This function will add an `event listener` that gets triggered only once. After the\n   * first trigger it will get removed. This is like adding an `event listener`\n   * with {@link EventTarget#on} that calls {@link EventTarget#off} on itself.\n   *\n   * @param {string|string[]} type\n   *        An event name or an array of event names.\n   *\n   * @param {EventTarget~EventListener} fn\n   *        The function to be called once for each event name.\n   */\n\n  EventTarget.prototype.one = function (type, fn) {\n    // Remove the addEventListener alialing Events.on\n    // so we don't get into an infinite type loop\n    var ael = this.addEventListener;\n\n    this.addEventListener = function () {};\n\n    one(this, type, fn);\n    this.addEventListener = ael;\n  };\n  /**\n   * This function causes an event to happen. This will then cause any `event listeners`\n   * that are waiting for that event, to get called. If there are no `event listeners`\n   * for an event then nothing will happen.\n   *\n   * If the name of the `Event` that is being triggered is in `EventTarget.allowedEvents_`.\n   * Trigger will also call the `on` + `uppercaseEventName` function.\n   *\n   * Example:\n   * 'click' is in `EventTarget.allowedEvents_`, so, trigger will attempt to call\n   * `onClick` if it exists.\n   *\n   * @param {string|EventTarget~Event|Object} event\n   *        The name of the event, an `Event`, or an object with a key of type set to\n   *        an event name.\n   */\n\n\n  EventTarget.prototype.trigger = function (event) {\n    var type = event.type || event;\n\n    if (typeof event === 'string') {\n      event = {\n        type: type\n      };\n    }\n\n    event = fixEvent(event);\n\n    if (this.allowedEvents_[type] && this['on' + type]) {\n      this['on' + type](event);\n    }\n\n    trigger(this, event);\n  };\n  /**\n   * An alias of {@link EventTarget#trigger}. Allows `EventTarget` to mimic\n   * the standard DOM API.\n   *\n   * @function\n   * @see {@link EventTarget#trigger}\n   */\n\n\n  EventTarget.prototype.dispatchEvent = EventTarget.prototype.trigger;\n  var EVENT_MAP;\n\n  EventTarget.prototype.queueTrigger = function (event) {\n    var _this = this;\n\n    // only set up EVENT_MAP if it'll be used\n    if (!EVENT_MAP) {\n      EVENT_MAP = new Map();\n    }\n\n    var type = event.type || event;\n    var map = EVENT_MAP.get(this);\n\n    if (!map) {\n      map = new Map();\n      EVENT_MAP.set(this, map);\n    }\n\n    var oldTimeout = map.get(type);\n    map.delete(type);\n    window$1.clearTimeout(oldTimeout);\n    var timeout = window$1.setTimeout(function () {\n      // if we cleared out all timeouts for the current target, delete its map\n      if (map.size === 0) {\n        map = null;\n        EVENT_MAP.delete(_this);\n      }\n\n      _this.trigger(event);\n    }, 0);\n    map.set(type, timeout);\n  };\n\n  /**\n   * @file mixins/evented.js\n   * @module evented\n   */\n  /**\n   * Returns whether or not an object has had the evented mixin applied.\n   *\n   * @param  {Object} object\n   *         An object to test.\n   *\n   * @return {boolean}\n   *         Whether or not the object appears to be evented.\n   */\n\n  var isEvented = function isEvented(object) {\n    return object instanceof EventTarget || !!object.eventBusEl_ && ['on', 'one', 'off', 'trigger'].every(function (k) {\n      return typeof object[k] === 'function';\n    });\n  };\n  /**\n   * Adds a callback to run after the evented mixin applied.\n   *\n   * @param  {Object} object\n   *         An object to Add\n   * @param  {Function} callback\n   *         The callback to run.\n   */\n\n\n  var addEventedCallback = function addEventedCallback(target, callback) {\n    if (isEvented(target)) {\n      callback();\n    } else {\n      if (!target.eventedCallbacks) {\n        target.eventedCallbacks = [];\n      }\n\n      target.eventedCallbacks.push(callback);\n    }\n  };\n  /**\n   * Whether a value is a valid event type - non-empty string or array.\n   *\n   * @private\n   * @param  {string|Array} type\n   *         The type value to test.\n   *\n   * @return {boolean}\n   *         Whether or not the type is a valid event type.\n   */\n\n\n  var isValidEventType = function isValidEventType(type) {\n    return (// The regex here verifies that the `type` contains at least one non-\n      // whitespace character.\n      typeof type === 'string' && /\\S/.test(type) || Array.isArray(type) && !!type.length\n    );\n  };\n  /**\n   * Validates a value to determine if it is a valid event target. Throws if not.\n   *\n   * @private\n   * @throws {Error}\n   *         If the target does not appear to be a valid event target.\n   *\n   * @param  {Object} target\n   *         The object to test.\n   */\n\n\n  var validateTarget = function validateTarget(target) {\n    if (!target.nodeName && !isEvented(target)) {\n      throw new Error('Invalid target; must be a DOM node or evented object.');\n    }\n  };\n  /**\n   * Validates a value to determine if it is a valid event target. Throws if not.\n   *\n   * @private\n   * @throws {Error}\n   *         If the type does not appear to be a valid event type.\n   *\n   * @param  {string|Array} type\n   *         The type to test.\n   */\n\n\n  var validateEventType = function validateEventType(type) {\n    if (!isValidEventType(type)) {\n      throw new Error('Invalid event type; must be a non-empty string or array.');\n    }\n  };\n  /**\n   * Validates a value to determine if it is a valid listener. Throws if not.\n   *\n   * @private\n   * @throws {Error}\n   *         If the listener is not a function.\n   *\n   * @param  {Function} listener\n   *         The listener to test.\n   */\n\n\n  var validateListener = function validateListener(listener) {\n    if (typeof listener !== 'function') {\n      throw new Error('Invalid listener; must be a function.');\n    }\n  };\n  /**\n   * Takes an array of arguments given to `on()` or `one()`, validates them, and\n   * normalizes them into an object.\n   *\n   * @private\n   * @param  {Object} self\n   *         The evented object on which `on()` or `one()` was called. This\n   *         object will be bound as the `this` value for the listener.\n   *\n   * @param  {Array} args\n   *         An array of arguments passed to `on()` or `one()`.\n   *\n   * @return {Object}\n   *         An object containing useful values for `on()` or `one()` calls.\n   */\n\n\n  var normalizeListenArgs = function normalizeListenArgs(self, args) {\n    // If the number of arguments is less than 3, the target is always the\n    // evented object itself.\n    var isTargetingSelf = args.length < 3 || args[0] === self || args[0] === self.eventBusEl_;\n    var target;\n    var type;\n    var listener;\n\n    if (isTargetingSelf) {\n      target = self.eventBusEl_; // Deal with cases where we got 3 arguments, but we are still listening to\n      // the evented object itself.\n\n      if (args.length >= 3) {\n        args.shift();\n      }\n\n      type = args[0];\n      listener = args[1];\n    } else {\n      target = args[0];\n      type = args[1];\n      listener = args[2];\n    }\n\n    validateTarget(target);\n    validateEventType(type);\n    validateListener(listener);\n    listener = bind(self, listener);\n    return {\n      isTargetingSelf: isTargetingSelf,\n      target: target,\n      type: type,\n      listener: listener\n    };\n  };\n  /**\n   * Adds the listener to the event type(s) on the target, normalizing for\n   * the type of target.\n   *\n   * @private\n   * @param  {Element|Object} target\n   *         A DOM node or evented object.\n   *\n   * @param  {string} method\n   *         The event binding method to use (\"on\" or \"one\").\n   *\n   * @param  {string|Array} type\n   *         One or more event type(s).\n   *\n   * @param  {Function} listener\n   *         A listener function.\n   */\n\n\n  var listen = function listen(target, method, type, listener) {\n    validateTarget(target);\n\n    if (target.nodeName) {\n      Events[method](target, type, listener);\n    } else {\n      target[method](type, listener);\n    }\n  };\n  /**\n   * Contains methods that provide event capabilities to an object which is passed\n   * to {@link module:evented|evented}.\n   *\n   * @mixin EventedMixin\n   */\n\n\n  var EventedMixin = {\n    /**\n     * Add a listener to an event (or events) on this object or another evented\n     * object.\n     *\n     * @param  {string|Array|Element|Object} targetOrType\n     *         If this is a string or array, it represents the event type(s)\n     *         that will trigger the listener.\n     *\n     *         Another evented object can be passed here instead, which will\n     *         cause the listener to listen for events on _that_ object.\n     *\n     *         In either case, the listener's `this` value will be bound to\n     *         this object.\n     *\n     * @param  {string|Array|Function} typeOrListener\n     *         If the first argument was a string or array, this should be the\n     *         listener function. Otherwise, this is a string or array of event\n     *         type(s).\n     *\n     * @param  {Function} [listener]\n     *         If the first argument was another evented object, this will be\n     *         the listener function.\n     */\n    on: function on$$1() {\n      var _this = this;\n\n      for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {\n        args[_key] = arguments[_key];\n      }\n\n      var _normalizeListenArgs = normalizeListenArgs(this, args),\n          isTargetingSelf = _normalizeListenArgs.isTargetingSelf,\n          target = _normalizeListenArgs.target,\n          type = _normalizeListenArgs.type,\n          listener = _normalizeListenArgs.listener;\n\n      listen(target, 'on', type, listener); // If this object is listening to another evented object.\n\n      if (!isTargetingSelf) {\n        // If this object is disposed, remove the listener.\n        var removeListenerOnDispose = function removeListenerOnDispose() {\n          return _this.off(target, type, listener);\n        }; // Use the same function ID as the listener so we can remove it later it\n        // using the ID of the original listener.\n\n\n        removeListenerOnDispose.guid = listener.guid; // Add a listener to the target's dispose event as well. This ensures\n        // that if the target is disposed BEFORE this object, we remove the\n        // removal listener that was just added. Otherwise, we create a memory leak.\n\n        var removeRemoverOnTargetDispose = function removeRemoverOnTargetDispose() {\n          return _this.off('dispose', removeListenerOnDispose);\n        }; // Use the same function ID as the listener so we can remove it later\n        // it using the ID of the original listener.\n\n\n        removeRemoverOnTargetDispose.guid = listener.guid;\n        listen(this, 'on', 'dispose', removeListenerOnDispose);\n        listen(target, 'on', 'dispose', removeRemoverOnTargetDispose);\n      }\n    },\n\n    /**\n     * Add a listener to an event (or events) on this object or another evented\n     * object. The listener will only be called once and then removed.\n     *\n     * @param  {string|Array|Element|Object} targetOrType\n     *         If this is a string or array, it represents the event type(s)\n     *         that will trigger the listener.\n     *\n     *         Another evented object can be passed here instead, which will\n     *         cause the listener to listen for events on _that_ object.\n     *\n     *         In either case, the listener's `this` value will be bound to\n     *         this object.\n     *\n     * @param  {string|Array|Function} typeOrListener\n     *         If the first argument was a string or array, this should be the\n     *         listener function. Otherwise, this is a string or array of event\n     *         type(s).\n     *\n     * @param  {Function} [listener]\n     *         If the first argument was another evented object, this will be\n     *         the listener function.\n     */\n    one: function one$$1() {\n      var _this2 = this;\n\n      for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {\n        args[_key2] = arguments[_key2];\n      }\n\n      var _normalizeListenArgs2 = normalizeListenArgs(this, args),\n          isTargetingSelf = _normalizeListenArgs2.isTargetingSelf,\n          target = _normalizeListenArgs2.target,\n          type = _normalizeListenArgs2.type,\n          listener = _normalizeListenArgs2.listener; // Targeting this evented object.\n\n\n      if (isTargetingSelf) {\n        listen(target, 'one', type, listener); // Targeting another evented object.\n      } else {\n        var wrapper = function wrapper() {\n          _this2.off(target, type, wrapper);\n\n          for (var _len3 = arguments.length, largs = new Array(_len3), _key3 = 0; _key3 < _len3; _key3++) {\n            largs[_key3] = arguments[_key3];\n          }\n\n          listener.apply(null, largs);\n        }; // Use the same function ID as the listener so we can remove it later\n        // it using the ID of the original listener.\n\n\n        wrapper.guid = listener.guid;\n        listen(target, 'one', type, wrapper);\n      }\n    },\n\n    /**\n     * Removes listener(s) from event(s) on an evented object.\n     *\n     * @param  {string|Array|Element|Object} [targetOrType]\n     *         If this is a string or array, it represents the event type(s).\n     *\n     *         Another evented object can be passed here instead, in which case\n     *         ALL 3 arguments are _required_.\n     *\n     * @param  {string|Array|Function} [typeOrListener]\n     *         If the first argument was a string or array, this may be the\n     *         listener function. Otherwise, this is a string or array of event\n     *         type(s).\n     *\n     * @param  {Function} [listener]\n     *         If the first argument was another evented object, this will be\n     *         the listener function; otherwise, _all_ listeners bound to the\n     *         event type(s) will be removed.\n     */\n    off: function off$$1(targetOrType, typeOrListener, listener) {\n      // Targeting this evented object.\n      if (!targetOrType || isValidEventType(targetOrType)) {\n        off(this.eventBusEl_, targetOrType, typeOrListener); // Targeting another evented object.\n      } else {\n        var target = targetOrType;\n        var type = typeOrListener; // Fail fast and in a meaningful way!\n\n        validateTarget(target);\n        validateEventType(type);\n        validateListener(listener); // Ensure there's at least a guid, even if the function hasn't been used\n\n        listener = bind(this, listener); // Remove the dispose listener on this evented object, which was given\n        // the same guid as the event listener in on().\n\n        this.off('dispose', listener);\n\n        if (target.nodeName) {\n          off(target, type, listener);\n          off(target, 'dispose', listener);\n        } else if (isEvented(target)) {\n          target.off(type, listener);\n          target.off('dispose', listener);\n        }\n      }\n    },\n\n    /**\n     * Fire an event on this evented object, causing its listeners to be called.\n     *\n     * @param   {string|Object} event\n     *          An event type or an object with a type property.\n     *\n     * @param   {Object} [hash]\n     *          An additional object to pass along to listeners.\n     *\n     * @return {boolean}\n     *          Whether or not the default behavior was prevented.\n     */\n    trigger: function trigger$$1(event, hash) {\n      return trigger(this.eventBusEl_, event, hash);\n    }\n  };\n  /**\n   * Applies {@link module:evented~EventedMixin|EventedMixin} to a target object.\n   *\n   * @param  {Object} target\n   *         The object to which to add event methods.\n   *\n   * @param  {Object} [options={}]\n   *         Options for customizing the mixin behavior.\n   *\n   * @param  {string} [options.eventBusKey]\n   *         By default, adds a `eventBusEl_` DOM element to the target object,\n   *         which is used as an event bus. If the target object already has a\n   *         DOM element that should be used, pass its key here.\n   *\n   * @return {Object}\n   *         The target object.\n   */\n\n  function evented(target, options) {\n    if (options === void 0) {\n      options = {};\n    }\n\n    var _options = options,\n        eventBusKey = _options.eventBusKey; // Set or create the eventBusEl_.\n\n    if (eventBusKey) {\n      if (!target[eventBusKey].nodeName) {\n        throw new Error(\"The eventBusKey \\\"\" + eventBusKey + \"\\\" does not refer to an element.\");\n      }\n\n      target.eventBusEl_ = target[eventBusKey];\n    } else {\n      target.eventBusEl_ = createEl('span', {\n        className: 'vjs-event-bus'\n      });\n    }\n\n    assign(target, EventedMixin);\n\n    if (target.eventedCallbacks) {\n      target.eventedCallbacks.forEach(function (callback) {\n        callback();\n      });\n    } // When any evented object is disposed, it removes all its listeners.\n\n\n    target.on('dispose', function () {\n      target.off();\n      window$1.setTimeout(function () {\n        target.eventBusEl_ = null;\n      }, 0);\n    });\n    return target;\n  }\n\n  /**\n   * @file mixins/stateful.js\n   * @module stateful\n   */\n  /**\n   * Contains methods that provide statefulness to an object which is passed\n   * to {@link module:stateful}.\n   *\n   * @mixin StatefulMixin\n   */\n\n  var StatefulMixin = {\n    /**\n     * A hash containing arbitrary keys and values representing the state of\n     * the object.\n     *\n     * @type {Object}\n     */\n    state: {},\n\n    /**\n     * Set the state of an object by mutating its\n     * {@link module:stateful~StatefulMixin.state|state} object in place.\n     *\n     * @fires   module:stateful~StatefulMixin#statechanged\n     * @param   {Object|Function} stateUpdates\n     *          A new set of properties to shallow-merge into the plugin state.\n     *          Can be a plain object or a function returning a plain object.\n     *\n     * @return {Object|undefined}\n     *          An object containing changes that occurred. If no changes\n     *          occurred, returns `undefined`.\n     */\n    setState: function setState(stateUpdates) {\n      var _this = this;\n\n      // Support providing the `stateUpdates` state as a function.\n      if (typeof stateUpdates === 'function') {\n        stateUpdates = stateUpdates();\n      }\n\n      var changes;\n      each(stateUpdates, function (value, key) {\n        // Record the change if the value is different from what's in the\n        // current state.\n        if (_this.state[key] !== value) {\n          changes = changes || {};\n          changes[key] = {\n            from: _this.state[key],\n            to: value\n          };\n        }\n\n        _this.state[key] = value;\n      }); // Only trigger \"statechange\" if there were changes AND we have a trigger\n      // function. This allows us to not require that the target object be an\n      // evented object.\n\n      if (changes && isEvented(this)) {\n        /**\n         * An event triggered on an object that is both\n         * {@link module:stateful|stateful} and {@link module:evented|evented}\n         * indicating that its state has changed.\n         *\n         * @event    module:stateful~StatefulMixin#statechanged\n         * @type     {Object}\n         * @property {Object} changes\n         *           A hash containing the properties that were changed and\n         *           the values they were changed `from` and `to`.\n         */\n        this.trigger({\n          changes: changes,\n          type: 'statechanged'\n        });\n      }\n\n      return changes;\n    }\n  };\n  /**\n   * Applies {@link module:stateful~StatefulMixin|StatefulMixin} to a target\n   * object.\n   *\n   * If the target object is {@link module:evented|evented} and has a\n   * `handleStateChanged` method, that method will be automatically bound to the\n   * `statechanged` event on itself.\n   *\n   * @param   {Object} target\n   *          The object to be made stateful.\n   *\n   * @param   {Object} [defaultState]\n   *          A default set of properties to populate the newly-stateful object's\n   *          `state` property.\n   *\n   * @return {Object}\n   *          Returns the `target`.\n   */\n\n  function stateful(target, defaultState) {\n    assign(target, StatefulMixin); // This happens after the mixing-in because we need to replace the `state`\n    // added in that step.\n\n    target.state = assign({}, target.state, defaultState); // Auto-bind the `handleStateChanged` method of the target object if it exists.\n\n    if (typeof target.handleStateChanged === 'function' && isEvented(target)) {\n      target.on('statechanged', target.handleStateChanged);\n    }\n\n    return target;\n  }\n\n  /**\n   * @file to-title-case.js\n   * @module to-title-case\n   */\n\n  /**\n   * Uppercase the first letter of a string.\n   *\n   * @param {string} string\n   *        String to be uppercased\n   *\n   * @return {string}\n   *         The string with an uppercased first letter\n   */\n  function toTitleCase(string) {\n    if (typeof string !== 'string') {\n      return string;\n    }\n\n    return string.charAt(0).toUpperCase() + string.slice(1);\n  }\n  /**\n   * Compares the TitleCase versions of the two strings for equality.\n   *\n   * @param {string} str1\n   *        The first string to compare\n   *\n   * @param {string} str2\n   *        The second string to compare\n   *\n   * @return {boolean}\n   *         Whether the TitleCase versions of the strings are equal\n   */\n\n  function titleCaseEquals(str1, str2) {\n    return toTitleCase(str1) === toTitleCase(str2);\n  }\n\n  /**\n   * @file merge-options.js\n   * @module merge-options\n   */\n  /**\n   * Merge two objects recursively.\n   *\n   * Performs a deep merge like\n   * {@link https://lodash.com/docs/4.17.10#merge|lodash.merge}, but only merges\n   * plain objects (not arrays, elements, or anything else).\n   *\n   * Non-plain object values will be copied directly from the right-most\n   * argument.\n   *\n   * @static\n   * @param   {Object[]} sources\n   *          One or more objects to merge into a new object.\n   *\n   * @return {Object}\n   *          A new object that is the merged result of all sources.\n   */\n\n  function mergeOptions() {\n    var result = {};\n\n    for (var _len = arguments.length, sources = new Array(_len), _key = 0; _key < _len; _key++) {\n      sources[_key] = arguments[_key];\n    }\n\n    sources.forEach(function (source) {\n      if (!source) {\n        return;\n      }\n\n      each(source, function (value, key) {\n        if (!isPlain(value)) {\n          result[key] = value;\n          return;\n        }\n\n        if (!isPlain(result[key])) {\n          result[key] = {};\n        }\n\n        result[key] = mergeOptions(result[key], value);\n      });\n    });\n    return result;\n  }\n\n  /**\n   * Player Component - Base class for all UI objects\n   *\n   * @file component.js\n   */\n  /**\n   * Base class for all UI Components.\n   * Components are UI objects which represent both a javascript object and an element\n   * in the DOM. They can be children of other components, and can have\n   * children themselves.\n   *\n   * Components can also use methods from {@link EventTarget}\n   */\n\n  var Component =\n  /*#__PURE__*/\n  function () {\n    /**\n     * A callback that is called when a component is ready. Does not have any\n     * paramters and any callback value will be ignored.\n     *\n     * @callback Component~ReadyCallback\n     * @this Component\n     */\n\n    /**\n     * Creates an instance of this class.\n     *\n     * @param {Player} player\n     *        The `Player` that this class should be attached to.\n     *\n     * @param {Object} [options]\n     *        The key/value store of player options.\n     *\n     * @param {Object[]} [options.children]\n     *        An array of children objects to intialize this component with. Children objects have\n     *        a name property that will be used if more than one component of the same type needs to be\n     *        added.\n     *\n     * @param {Component~ReadyCallback} [ready]\n     *        Function that gets called when the `Component` is ready.\n     */\n    function Component(player, options, ready) {\n      // The component might be the player itself and we can't pass `this` to super\n      if (!player && this.play) {\n        this.player_ = player = this; // eslint-disable-line\n      } else {\n        this.player_ = player;\n      } // Hold the reference to the parent component via `addChild` method\n\n\n      this.parentComponent_ = null; // Make a copy of prototype.options_ to protect against overriding defaults\n\n      this.options_ = mergeOptions({}, this.options_); // Updated options with supplied options\n\n      options = this.options_ = mergeOptions(this.options_, options); // Get ID from options or options element if one is supplied\n\n      this.id_ = options.id || options.el && options.el.id; // If there was no ID from the options, generate one\n\n      if (!this.id_) {\n        // Don't require the player ID function in the case of mock players\n        var id = player && player.id && player.id() || 'no_player';\n        this.id_ = id + \"_component_\" + newGUID();\n      }\n\n      this.name_ = options.name || null; // Create element if one wasn't provided in options\n\n      if (options.el) {\n        this.el_ = options.el;\n      } else if (options.createEl !== false) {\n        this.el_ = this.createEl();\n      } // if evented is anything except false, we want to mixin in evented\n\n\n      if (options.evented !== false) {\n        // Make this an evented object and use `el_`, if available, as its event bus\n        evented(this, {\n          eventBusKey: this.el_ ? 'el_' : null\n        });\n      }\n\n      stateful(this, this.constructor.defaultState);\n      this.children_ = [];\n      this.childIndex_ = {};\n      this.childNameIndex_ = {}; // Add any child components in options\n\n      if (options.initChildren !== false) {\n        this.initChildren();\n      }\n\n      this.ready(ready); // Don't want to trigger ready here or it will before init is actually\n      // finished for all children that run this constructor\n\n      if (options.reportTouchActivity !== false) {\n        this.enableTouchActivity();\n      }\n    }\n    /**\n     * Dispose of the `Component` and all child components.\n     *\n     * @fires Component#dispose\n     */\n\n\n    var _proto = Component.prototype;\n\n    _proto.dispose = function dispose() {\n      /**\n       * Triggered when a `Component` is disposed.\n       *\n       * @event Component#dispose\n       * @type {EventTarget~Event}\n       *\n       * @property {boolean} [bubbles=false]\n       *           set to false so that the close event does not\n       *           bubble up\n       */\n      this.trigger({\n        type: 'dispose',\n        bubbles: false\n      }); // Dispose all children.\n\n      if (this.children_) {\n        for (var i = this.children_.length - 1; i >= 0; i--) {\n          if (this.children_[i].dispose) {\n            this.children_[i].dispose();\n          }\n        }\n      } // Delete child references\n\n\n      this.children_ = null;\n      this.childIndex_ = null;\n      this.childNameIndex_ = null;\n      this.parentComponent_ = null;\n\n      if (this.el_) {\n        // Remove element from DOM\n        if (this.el_.parentNode) {\n          this.el_.parentNode.removeChild(this.el_);\n        }\n\n        removeData(this.el_);\n        this.el_ = null;\n      } // remove reference to the player after disposing of the element\n\n\n      this.player_ = null;\n    }\n    /**\n     * Return the {@link Player} that the `Component` has attached to.\n     *\n     * @return {Player}\n     *         The player that this `Component` has attached to.\n     */\n    ;\n\n    _proto.player = function player() {\n      return this.player_;\n    }\n    /**\n     * Deep merge of options objects with new options.\n     * > Note: When both `obj` and `options` contain properties whose values are objects.\n     *         The two properties get merged using {@link module:mergeOptions}\n     *\n     * @param {Object} obj\n     *        The object that contains new options.\n     *\n     * @return {Object}\n     *         A new object of `this.options_` and `obj` merged together.\n     *\n     * @deprecated since version 5\n     */\n    ;\n\n    _proto.options = function options(obj) {\n      log.warn('this.options() has been deprecated and will be moved to the constructor in 6.0');\n\n      if (!obj) {\n        return this.options_;\n      }\n\n      this.options_ = mergeOptions(this.options_, obj);\n      return this.options_;\n    }\n    /**\n     * Get the `Component`s DOM element\n     *\n     * @return {Element}\n     *         The DOM element for this `Component`.\n     */\n    ;\n\n    _proto.el = function el() {\n      return this.el_;\n    }\n    /**\n     * Create the `Component`s DOM element.\n     *\n     * @param {string} [tagName]\n     *        Element's DOM node type. e.g. 'div'\n     *\n     * @param {Object} [properties]\n     *        An object of properties that should be set.\n     *\n     * @param {Object} [attributes]\n     *        An object of attributes that should be set.\n     *\n     * @return {Element}\n     *         The element that gets created.\n     */\n    ;\n\n    _proto.createEl = function createEl$$1(tagName, properties, attributes) {\n      return createEl(tagName, properties, attributes);\n    }\n    /**\n     * Localize a string given the string in english.\n     *\n     * If tokens are provided, it'll try and run a simple token replacement on the provided string.\n     * The tokens it looks for look like `{1}` with the index being 1-indexed into the tokens array.\n     *\n     * If a `defaultValue` is provided, it'll use that over `string`,\n     * if a value isn't found in provided language files.\n     * This is useful if you want to have a descriptive key for token replacement\n     * but have a succinct localized string and not require `en.json` to be included.\n     *\n     * Currently, it is used for the progress bar timing.\n     * ```js\n     * {\n     *   \"progress bar timing: currentTime={1} duration={2}\": \"{1} of {2}\"\n     * }\n     * ```\n     * It is then used like so:\n     * ```js\n     * this.localize('progress bar timing: currentTime={1} duration{2}',\n     *               [this.player_.currentTime(), this.player_.duration()],\n     *               '{1} of {2}');\n     * ```\n     *\n     * Which outputs something like: `01:23 of 24:56`.\n     *\n     *\n     * @param {string} string\n     *        The string to localize and the key to lookup in the language files.\n     * @param {string[]} [tokens]\n     *        If the current item has token replacements, provide the tokens here.\n     * @param {string} [defaultValue]\n     *        Defaults to `string`. Can be a default value to use for token replacement\n     *        if the lookup key is needed to be separate.\n     *\n     * @return {string}\n     *         The localized string or if no localization exists the english string.\n     */\n    ;\n\n    _proto.localize = function localize(string, tokens, defaultValue) {\n      if (defaultValue === void 0) {\n        defaultValue = string;\n      }\n\n      var code = this.player_.language && this.player_.language();\n      var languages = this.player_.languages && this.player_.languages();\n      var language = languages && languages[code];\n      var primaryCode = code && code.split('-')[0];\n      var primaryLang = languages && languages[primaryCode];\n      var localizedString = defaultValue;\n\n      if (language && language[string]) {\n        localizedString = language[string];\n      } else if (primaryLang && primaryLang[string]) {\n        localizedString = primaryLang[string];\n      }\n\n      if (tokens) {\n        localizedString = localizedString.replace(/\\{(\\d+)\\}/g, function (match, index) {\n          var value = tokens[index - 1];\n          var ret = value;\n\n          if (typeof value === 'undefined') {\n            ret = match;\n          }\n\n          return ret;\n        });\n      }\n\n      return localizedString;\n    }\n    /**\n     * Return the `Component`s DOM element. This is where children get inserted.\n     * This will usually be the the same as the element returned in {@link Component#el}.\n     *\n     * @return {Element}\n     *         The content element for this `Component`.\n     */\n    ;\n\n    _proto.contentEl = function contentEl() {\n      return this.contentEl_ || this.el_;\n    }\n    /**\n     * Get this `Component`s ID\n     *\n     * @return {string}\n     *         The id of this `Component`\n     */\n    ;\n\n    _proto.id = function id() {\n      return this.id_;\n    }\n    /**\n     * Get the `Component`s name. The name gets used to reference the `Component`\n     * and is set during registration.\n     *\n     * @return {string}\n     *         The name of this `Component`.\n     */\n    ;\n\n    _proto.name = function name() {\n      return this.name_;\n    }\n    /**\n     * Get an array of all child components\n     *\n     * @return {Array}\n     *         The children\n     */\n    ;\n\n    _proto.children = function children() {\n      return this.children_;\n    }\n    /**\n     * Returns the child `Component` with the given `id`.\n     *\n     * @param {string} id\n     *        The id of the child `Component` to get.\n     *\n     * @return {Component|undefined}\n     *         The child `Component` with the given `id` or undefined.\n     */\n    ;\n\n    _proto.getChildById = function getChildById(id) {\n      return this.childIndex_[id];\n    }\n    /**\n     * Returns the child `Component` with the given `name`.\n     *\n     * @param {string} name\n     *        The name of the child `Component` to get.\n     *\n     * @return {Component|undefined}\n     *         The child `Component` with the given `name` or undefined.\n     */\n    ;\n\n    _proto.getChild = function getChild(name) {\n      if (!name) {\n        return;\n      }\n\n      name = toTitleCase(name);\n      return this.childNameIndex_[name];\n    }\n    /**\n     * Add a child `Component` inside the current `Component`.\n     *\n     *\n     * @param {string|Component} child\n     *        The name or instance of a child to add.\n     *\n     * @param {Object} [options={}]\n     *        The key/value store of options that will get passed to children of\n     *        the child.\n     *\n     * @param {number} [index=this.children_.length]\n     *        The index to attempt to add a child into.\n     *\n     * @return {Component}\n     *         The `Component` that gets added as a child. When using a string the\n     *         `Component` will get created by this process.\n     */\n    ;\n\n    _proto.addChild = function addChild(child, options, index) {\n      if (options === void 0) {\n        options = {};\n      }\n\n      if (index === void 0) {\n        index = this.children_.length;\n      }\n\n      var component;\n      var componentName; // If child is a string, create component with options\n\n      if (typeof child === 'string') {\n        componentName = toTitleCase(child);\n        var componentClassName = options.componentClass || componentName; // Set name through options\n\n        options.name = componentName; // Create a new object & element for this controls set\n        // If there's no .player_, this is a player\n\n        var ComponentClass = Component.getComponent(componentClassName);\n\n        if (!ComponentClass) {\n          throw new Error(\"Component \" + componentClassName + \" does not exist\");\n        } // data stored directly on the videojs object may be\n        // misidentified as a component to retain\n        // backwards-compatibility with 4.x. check to make sure the\n        // component class can be instantiated.\n\n\n        if (typeof ComponentClass !== 'function') {\n          return null;\n        }\n\n        component = new ComponentClass(this.player_ || this, options); // child is a component instance\n      } else {\n        component = child;\n      }\n\n      if (component.parentComponent_) {\n        component.parentComponent_.removeChild(component);\n      }\n\n      this.children_.splice(index, 0, component);\n      component.parentComponent_ = this;\n\n      if (typeof component.id === 'function') {\n        this.childIndex_[component.id()] = component;\n      } // If a name wasn't used to create the component, check if we can use the\n      // name function of the component\n\n\n      componentName = componentName || component.name && toTitleCase(component.name());\n\n      if (componentName) {\n        this.childNameIndex_[componentName] = component;\n      } // Add the UI object's element to the container div (box)\n      // Having an element is not required\n\n\n      if (typeof component.el === 'function' && component.el()) {\n        var childNodes = this.contentEl().children;\n        var refNode = childNodes[index] || null;\n        this.contentEl().insertBefore(component.el(), refNode);\n      } // Return so it can stored on parent object if desired.\n\n\n      return component;\n    }\n    /**\n     * Remove a child `Component` from this `Component`s list of children. Also removes\n     * the child `Component`s element from this `Component`s element.\n     *\n     * @param {Component} component\n     *        The child `Component` to remove.\n     */\n    ;\n\n    _proto.removeChild = function removeChild(component) {\n      if (typeof component === 'string') {\n        component = this.getChild(component);\n      }\n\n      if (!component || !this.children_) {\n        return;\n      }\n\n      var childFound = false;\n\n      for (var i = this.children_.length - 1; i >= 0; i--) {\n        if (this.children_[i] === component) {\n          childFound = true;\n          this.children_.splice(i, 1);\n          break;\n        }\n      }\n\n      if (!childFound) {\n        return;\n      }\n\n      component.parentComponent_ = null;\n      this.childIndex_[component.id()] = null;\n      this.childNameIndex_[component.name()] = null;\n      var compEl = component.el();\n\n      if (compEl && compEl.parentNode === this.contentEl()) {\n        this.contentEl().removeChild(component.el());\n      }\n    }\n    /**\n     * Add and initialize default child `Component`s based upon options.\n     */\n    ;\n\n    _proto.initChildren = function initChildren() {\n      var _this = this;\n\n      var children = this.options_.children;\n\n      if (children) {\n        // `this` is `parent`\n        var parentOptions = this.options_;\n\n        var handleAdd = function handleAdd(child) {\n          var name = child.name;\n          var opts = child.opts; // Allow options for children to be set at the parent options\n          // e.g. videojs(id, { controlBar: false });\n          // instead of videojs(id, { children: { controlBar: false });\n\n          if (parentOptions[name] !== undefined) {\n            opts = parentOptions[name];\n          } // Allow for disabling default components\n          // e.g. options['children']['posterImage'] = false\n\n\n          if (opts === false) {\n            return;\n          } // Allow options to be passed as a simple boolean if no configuration\n          // is necessary.\n\n\n          if (opts === true) {\n            opts = {};\n          } // We also want to pass the original player options\n          // to each component as well so they don't need to\n          // reach back into the player for options later.\n\n\n          opts.playerOptions = _this.options_.playerOptions; // Create and add the child component.\n          // Add a direct reference to the child by name on the parent instance.\n          // If two of the same component are used, different names should be supplied\n          // for each\n\n          var newChild = _this.addChild(name, opts);\n\n          if (newChild) {\n            _this[name] = newChild;\n          }\n        }; // Allow for an array of children details to passed in the options\n\n\n        var workingChildren;\n        var Tech = Component.getComponent('Tech');\n\n        if (Array.isArray(children)) {\n          workingChildren = children;\n        } else {\n          workingChildren = Object.keys(children);\n        }\n\n        workingChildren // children that are in this.options_ but also in workingChildren  would\n        // give us extra children we do not want. So, we want to filter them out.\n        .concat(Object.keys(this.options_).filter(function (child) {\n          return !workingChildren.some(function (wchild) {\n            if (typeof wchild === 'string') {\n              return child === wchild;\n            }\n\n            return child === wchild.name;\n          });\n        })).map(function (child) {\n          var name;\n          var opts;\n\n          if (typeof child === 'string') {\n            name = child;\n            opts = children[name] || _this.options_[name] || {};\n          } else {\n            name = child.name;\n            opts = child;\n          }\n\n          return {\n            name: name,\n            opts: opts\n          };\n        }).filter(function (child) {\n          // we have to make sure that child.name isn't in the techOrder since\n          // techs are registerd as Components but can't aren't compatible\n          // See https://github.com/videojs/video.js/issues/2772\n          var c = Component.getComponent(child.opts.componentClass || toTitleCase(child.name));\n          return c && !Tech.isTech(c);\n        }).forEach(handleAdd);\n      }\n    }\n    /**\n     * Builds the default DOM class name. Should be overriden by sub-components.\n     *\n     * @return {string}\n     *         The DOM class name for this object.\n     *\n     * @abstract\n     */\n    ;\n\n    _proto.buildCSSClass = function buildCSSClass() {\n      // Child classes can include a function that does:\n      // return 'CLASS NAME' + this._super();\n      return '';\n    }\n    /**\n     * Bind a listener to the component's ready state.\n     * Different from event listeners in that if the ready event has already happened\n     * it will trigger the function immediately.\n     *\n     * @return {Component}\n     *         Returns itself; method can be chained.\n     */\n    ;\n\n    _proto.ready = function ready(fn, sync) {\n      if (sync === void 0) {\n        sync = false;\n      }\n\n      if (!fn) {\n        return;\n      }\n\n      if (!this.isReady_) {\n        this.readyQueue_ = this.readyQueue_ || [];\n        this.readyQueue_.push(fn);\n        return;\n      }\n\n      if (sync) {\n        fn.call(this);\n      } else {\n        // Call the function asynchronously by default for consistency\n        this.setTimeout(fn, 1);\n      }\n    }\n    /**\n     * Trigger all the ready listeners for this `Component`.\n     *\n     * @fires Component#ready\n     */\n    ;\n\n    _proto.triggerReady = function triggerReady() {\n      this.isReady_ = true; // Ensure ready is triggered asynchronously\n\n      this.setTimeout(function () {\n        var readyQueue = this.readyQueue_; // Reset Ready Queue\n\n        this.readyQueue_ = [];\n\n        if (readyQueue && readyQueue.length > 0) {\n          readyQueue.forEach(function (fn) {\n            fn.call(this);\n          }, this);\n        } // Allow for using event listeners also\n\n        /**\n         * Triggered when a `Component` is ready.\n         *\n         * @event Component#ready\n         * @type {EventTarget~Event}\n         */\n\n\n        this.trigger('ready');\n      }, 1);\n    }\n    /**\n     * Find a single DOM element matching a `selector`. This can be within the `Component`s\n     * `contentEl()` or another custom context.\n     *\n     * @param {string} selector\n     *        A valid CSS selector, which will be passed to `querySelector`.\n     *\n     * @param {Element|string} [context=this.contentEl()]\n     *        A DOM element within which to query. Can also be a selector string in\n     *        which case the first matching element will get used as context. If\n     *        missing `this.contentEl()` gets used. If  `this.contentEl()` returns\n     *        nothing it falls back to `document`.\n     *\n     * @return {Element|null}\n     *         the dom element that was found, or null\n     *\n     * @see [Information on CSS Selectors](https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Getting_Started/Selectors)\n     */\n    ;\n\n    _proto.$ = function $$$1(selector, context) {\n      return $(selector, context || this.contentEl());\n    }\n    /**\n     * Finds all DOM element matching a `selector`. This can be within the `Component`s\n     * `contentEl()` or another custom context.\n     *\n     * @param {string} selector\n     *        A valid CSS selector, which will be passed to `querySelectorAll`.\n     *\n     * @param {Element|string} [context=this.contentEl()]\n     *        A DOM element within which to query. Can also be a selector string in\n     *        which case the first matching element will get used as context. If\n     *        missing `this.contentEl()` gets used. If  `this.contentEl()` returns\n     *        nothing it falls back to `document`.\n     *\n     * @return {NodeList}\n     *         a list of dom elements that were found\n     *\n     * @see [Information on CSS Selectors](https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Getting_Started/Selectors)\n     */\n    ;\n\n    _proto.$$ = function $$$$1(selector, context) {\n      return $$(selector, context || this.contentEl());\n    }\n    /**\n     * Check if a component's element has a CSS class name.\n     *\n     * @param {string} classToCheck\n     *        CSS class name to check.\n     *\n     * @return {boolean}\n     *         - True if the `Component` has the class.\n     *         - False if the `Component` does not have the class`\n     */\n    ;\n\n    _proto.hasClass = function hasClass$$1(classToCheck) {\n      return hasClass(this.el_, classToCheck);\n    }\n    /**\n     * Add a CSS class name to the `Component`s element.\n     *\n     * @param {string} classToAdd\n     *        CSS class name to add\n     */\n    ;\n\n    _proto.addClass = function addClass$$1(classToAdd) {\n      addClass(this.el_, classToAdd);\n    }\n    /**\n     * Remove a CSS class name from the `Component`s element.\n     *\n     * @param {string} classToRemove\n     *        CSS class name to remove\n     */\n    ;\n\n    _proto.removeClass = function removeClass$$1(classToRemove) {\n      removeClass(this.el_, classToRemove);\n    }\n    /**\n     * Add or remove a CSS class name from the component's element.\n     * - `classToToggle` gets added when {@link Component#hasClass} would return false.\n     * - `classToToggle` gets removed when {@link Component#hasClass} would return true.\n     *\n     * @param  {string} classToToggle\n     *         The class to add or remove based on (@link Component#hasClass}\n     *\n     * @param  {boolean|Dom~predicate} [predicate]\n     *         An {@link Dom~predicate} function or a boolean\n     */\n    ;\n\n    _proto.toggleClass = function toggleClass$$1(classToToggle, predicate) {\n      toggleClass(this.el_, classToToggle, predicate);\n    }\n    /**\n     * Show the `Component`s element if it is hidden by removing the\n     * 'vjs-hidden' class name from it.\n     */\n    ;\n\n    _proto.show = function show() {\n      this.removeClass('vjs-hidden');\n    }\n    /**\n     * Hide the `Component`s element if it is currently showing by adding the\n     * 'vjs-hidden` class name to it.\n     */\n    ;\n\n    _proto.hide = function hide() {\n      this.addClass('vjs-hidden');\n    }\n    /**\n     * Lock a `Component`s element in its visible state by adding the 'vjs-lock-showing'\n     * class name to it. Used during fadeIn/fadeOut.\n     *\n     * @private\n     */\n    ;\n\n    _proto.lockShowing = function lockShowing() {\n      this.addClass('vjs-lock-showing');\n    }\n    /**\n     * Unlock a `Component`s element from its visible state by removing the 'vjs-lock-showing'\n     * class name from it. Used during fadeIn/fadeOut.\n     *\n     * @private\n     */\n    ;\n\n    _proto.unlockShowing = function unlockShowing() {\n      this.removeClass('vjs-lock-showing');\n    }\n    /**\n     * Get the value of an attribute on the `Component`s element.\n     *\n     * @param {string} attribute\n     *        Name of the attribute to get the value from.\n     *\n     * @return {string|null}\n     *         - The value of the attribute that was asked for.\n     *         - Can be an empty string on some browsers if the attribute does not exist\n     *           or has no value\n     *         - Most browsers will return null if the attibute does not exist or has\n     *           no value.\n     *\n     * @see [DOM API]{@link https://developer.mozilla.org/en-US/docs/Web/API/Element/getAttribute}\n     */\n    ;\n\n    _proto.getAttribute = function getAttribute$$1(attribute) {\n      return getAttribute(this.el_, attribute);\n    }\n    /**\n     * Set the value of an attribute on the `Component`'s element\n     *\n     * @param {string} attribute\n     *        Name of the attribute to set.\n     *\n     * @param {string} value\n     *        Value to set the attribute to.\n     *\n     * @see [DOM API]{@link https://developer.mozilla.org/en-US/docs/Web/API/Element/setAttribute}\n     */\n    ;\n\n    _proto.setAttribute = function setAttribute$$1(attribute, value) {\n      setAttribute(this.el_, attribute, value);\n    }\n    /**\n     * Remove an attribute from the `Component`s element.\n     *\n     * @param {string} attribute\n     *        Name of the attribute to remove.\n     *\n     * @see [DOM API]{@link https://developer.mozilla.org/en-US/docs/Web/API/Element/removeAttribute}\n     */\n    ;\n\n    _proto.removeAttribute = function removeAttribute$$1(attribute) {\n      removeAttribute(this.el_, attribute);\n    }\n    /**\n     * Get or set the width of the component based upon the CSS styles.\n     * See {@link Component#dimension} for more detailed information.\n     *\n     * @param {number|string} [num]\n     *        The width that you want to set postfixed with '%', 'px' or nothing.\n     *\n     * @param {boolean} [skipListeners]\n     *        Skip the componentresize event trigger\n     *\n     * @return {number|string}\n     *         The width when getting, zero if there is no width. Can be a string\n     *           postpixed with '%' or 'px'.\n     */\n    ;\n\n    _proto.width = function width(num, skipListeners) {\n      return this.dimension('width', num, skipListeners);\n    }\n    /**\n     * Get or set the height of the component based upon the CSS styles.\n     * See {@link Component#dimension} for more detailed information.\n     *\n     * @param {number|string} [num]\n     *        The height that you want to set postfixed with '%', 'px' or nothing.\n     *\n     * @param {boolean} [skipListeners]\n     *        Skip the componentresize event trigger\n     *\n     * @return {number|string}\n     *         The width when getting, zero if there is no width. Can be a string\n     *         postpixed with '%' or 'px'.\n     */\n    ;\n\n    _proto.height = function height(num, skipListeners) {\n      return this.dimension('height', num, skipListeners);\n    }\n    /**\n     * Set both the width and height of the `Component` element at the same time.\n     *\n     * @param  {number|string} width\n     *         Width to set the `Component`s element to.\n     *\n     * @param  {number|string} height\n     *         Height to set the `Component`s element to.\n     */\n    ;\n\n    _proto.dimensions = function dimensions(width, height) {\n      // Skip componentresize listeners on width for optimization\n      this.width(width, true);\n      this.height(height);\n    }\n    /**\n     * Get or set width or height of the `Component` element. This is the shared code\n     * for the {@link Component#width} and {@link Component#height}.\n     *\n     * Things to know:\n     * - If the width or height in an number this will return the number postfixed with 'px'.\n     * - If the width/height is a percent this will return the percent postfixed with '%'\n     * - Hidden elements have a width of 0 with `window.getComputedStyle`. This function\n     *   defaults to the `Component`s `style.width` and falls back to `window.getComputedStyle`.\n     *   See [this]{@link http://www.foliotek.com/devblog/getting-the-width-of-a-hidden-element-with-jquery-using-width/}\n     *   for more information\n     * - If you want the computed style of the component, use {@link Component#currentWidth}\n     *   and {@link {Component#currentHeight}\n     *\n     * @fires Component#componentresize\n     *\n     * @param {string} widthOrHeight\n     8        'width' or 'height'\n     *\n     * @param  {number|string} [num]\n     8         New dimension\n     *\n     * @param  {boolean} [skipListeners]\n     *         Skip componentresize event trigger\n     *\n     * @return {number}\n     *         The dimension when getting or 0 if unset\n     */\n    ;\n\n    _proto.dimension = function dimension(widthOrHeight, num, skipListeners) {\n      if (num !== undefined) {\n        // Set to zero if null or literally NaN (NaN !== NaN)\n        if (num === null || num !== num) {\n          num = 0;\n        } // Check if using css width/height (% or px) and adjust\n\n\n        if (('' + num).indexOf('%') !== -1 || ('' + num).indexOf('px') !== -1) {\n          this.el_.style[widthOrHeight] = num;\n        } else if (num === 'auto') {\n          this.el_.style[widthOrHeight] = '';\n        } else {\n          this.el_.style[widthOrHeight] = num + 'px';\n        } // skipListeners allows us to avoid triggering the resize event when setting both width and height\n\n\n        if (!skipListeners) {\n          /**\n           * Triggered when a component is resized.\n           *\n           * @event Component#componentresize\n           * @type {EventTarget~Event}\n           */\n          this.trigger('componentresize');\n        }\n\n        return;\n      } // Not setting a value, so getting it\n      // Make sure element exists\n\n\n      if (!this.el_) {\n        return 0;\n      } // Get dimension value from style\n\n\n      var val = this.el_.style[widthOrHeight];\n      var pxIndex = val.indexOf('px');\n\n      if (pxIndex !== -1) {\n        // Return the pixel value with no 'px'\n        return parseInt(val.slice(0, pxIndex), 10);\n      } // No px so using % or no style was set, so falling back to offsetWidth/height\n      // If component has display:none, offset will return 0\n      // TODO: handle display:none and no dimension style using px\n\n\n      return parseInt(this.el_['offset' + toTitleCase(widthOrHeight)], 10);\n    }\n    /**\n     * Get the computed width or the height of the component's element.\n     *\n     * Uses `window.getComputedStyle`.\n     *\n     * @param {string} widthOrHeight\n     *        A string containing 'width' or 'height'. Whichever one you want to get.\n     *\n     * @return {number}\n     *         The dimension that gets asked for or 0 if nothing was set\n     *         for that dimension.\n     */\n    ;\n\n    _proto.currentDimension = function currentDimension(widthOrHeight) {\n      var computedWidthOrHeight = 0;\n\n      if (widthOrHeight !== 'width' && widthOrHeight !== 'height') {\n        throw new Error('currentDimension only accepts width or height value');\n      }\n\n      if (typeof window$1.getComputedStyle === 'function') {\n        var computedStyle = window$1.getComputedStyle(this.el_);\n        computedWidthOrHeight = computedStyle.getPropertyValue(widthOrHeight) || computedStyle[widthOrHeight];\n      } // remove 'px' from variable and parse as integer\n\n\n      computedWidthOrHeight = parseFloat(computedWidthOrHeight); // if the computed value is still 0, it's possible that the browser is lying\n      // and we want to check the offset values.\n      // This code also runs wherever getComputedStyle doesn't exist.\n\n      if (computedWidthOrHeight === 0) {\n        var rule = \"offset\" + toTitleCase(widthOrHeight);\n        computedWidthOrHeight = this.el_[rule];\n      }\n\n      return computedWidthOrHeight;\n    }\n    /**\n     * An object that contains width and height values of the `Component`s\n     * computed style. Uses `window.getComputedStyle`.\n     *\n     * @typedef {Object} Component~DimensionObject\n     *\n     * @property {number} width\n     *           The width of the `Component`s computed style.\n     *\n     * @property {number} height\n     *           The height of the `Component`s computed style.\n     */\n\n    /**\n     * Get an object that contains computed width and height values of the\n     * component's element.\n     *\n     * Uses `window.getComputedStyle`.\n     *\n     * @return {Component~DimensionObject}\n     *         The computed dimensions of the component's element.\n     */\n    ;\n\n    _proto.currentDimensions = function currentDimensions() {\n      return {\n        width: this.currentDimension('width'),\n        height: this.currentDimension('height')\n      };\n    }\n    /**\n     * Get the computed width of the component's element.\n     *\n     * Uses `window.getComputedStyle`.\n     *\n     * @return {number}\n     *         The computed width of the component's element.\n     */\n    ;\n\n    _proto.currentWidth = function currentWidth() {\n      return this.currentDimension('width');\n    }\n    /**\n     * Get the computed height of the component's element.\n     *\n     * Uses `window.getComputedStyle`.\n     *\n     * @return {number}\n     *         The computed height of the component's element.\n     */\n    ;\n\n    _proto.currentHeight = function currentHeight() {\n      return this.currentDimension('height');\n    }\n    /**\n     * Set the focus to this component\n     */\n    ;\n\n    _proto.focus = function focus() {\n      this.el_.focus();\n    }\n    /**\n     * Remove the focus from this component\n     */\n    ;\n\n    _proto.blur = function blur() {\n      this.el_.blur();\n    }\n    /**\n     * When this Component receives a keydown event which it does not process,\n     *  it passes the event to the Player for handling.\n     *\n     * @param {EventTarget~Event} event\n     *        The `keydown` event that caused this function to be called.\n     */\n    ;\n\n    _proto.handleKeyPress = function handleKeyPress(event) {\n      if (this.player_) {\n        this.player_.handleKeyPress(event);\n      }\n    }\n    /**\n     * Emit a 'tap' events when touch event support gets detected. This gets used to\n     * support toggling the controls through a tap on the video. They get enabled\n     * because every sub-component would have extra overhead otherwise.\n     *\n     * @private\n     * @fires Component#tap\n     * @listens Component#touchstart\n     * @listens Component#touchmove\n     * @listens Component#touchleave\n     * @listens Component#touchcancel\n     * @listens Component#touchend\n      */\n    ;\n\n    _proto.emitTapEvents = function emitTapEvents() {\n      // Track the start time so we can determine how long the touch lasted\n      var touchStart = 0;\n      var firstTouch = null; // Maximum movement allowed during a touch event to still be considered a tap\n      // Other popular libs use anywhere from 2 (hammer.js) to 15,\n      // so 10 seems like a nice, round number.\n\n      var tapMovementThreshold = 10; // The maximum length a touch can be while still being considered a tap\n\n      var touchTimeThreshold = 200;\n      var couldBeTap;\n      this.on('touchstart', function (event) {\n        // If more than one finger, don't consider treating this as a click\n        if (event.touches.length === 1) {\n          // Copy pageX/pageY from the object\n          firstTouch = {\n            pageX: event.touches[0].pageX,\n            pageY: event.touches[0].pageY\n          }; // Record start time so we can detect a tap vs. \"touch and hold\"\n\n          touchStart = new Date().getTime(); // Reset couldBeTap tracking\n\n          couldBeTap = true;\n        }\n      });\n      this.on('touchmove', function (event) {\n        // If more than one finger, don't consider treating this as a click\n        if (event.touches.length > 1) {\n          couldBeTap = false;\n        } else if (firstTouch) {\n          // Some devices will throw touchmoves for all but the slightest of taps.\n          // So, if we moved only a small distance, this could still be a tap\n          var xdiff = event.touches[0].pageX - firstTouch.pageX;\n          var ydiff = event.touches[0].pageY - firstTouch.pageY;\n          var touchDistance = Math.sqrt(xdiff * xdiff + ydiff * ydiff);\n\n          if (touchDistance > tapMovementThreshold) {\n            couldBeTap = false;\n          }\n        }\n      });\n\n      var noTap = function noTap() {\n        couldBeTap = false;\n      }; // TODO: Listen to the original target. http://youtu.be/DujfpXOKUp8?t=13m8s\n\n\n      this.on('touchleave', noTap);\n      this.on('touchcancel', noTap); // When the touch ends, measure how long it took and trigger the appropriate\n      // event\n\n      this.on('touchend', function (event) {\n        firstTouch = null; // Proceed only if the touchmove/leave/cancel event didn't happen\n\n        if (couldBeTap === true) {\n          // Measure how long the touch lasted\n          var touchTime = new Date().getTime() - touchStart; // Make sure the touch was less than the threshold to be considered a tap\n\n          if (touchTime < touchTimeThreshold) {\n            // Don't let browser turn this into a click\n            event.preventDefault();\n            /**\n             * Triggered when a `Component` is tapped.\n             *\n             * @event Component#tap\n             * @type {EventTarget~Event}\n             */\n\n            this.trigger('tap'); // It may be good to copy the touchend event object and change the\n            // type to tap, if the other event properties aren't exact after\n            // Events.fixEvent runs (e.g. event.target)\n          }\n        }\n      });\n    }\n    /**\n     * This function reports user activity whenever touch events happen. This can get\n     * turned off by any sub-components that wants touch events to act another way.\n     *\n     * Report user touch activity when touch events occur. User activity gets used to\n     * determine when controls should show/hide. It is simple when it comes to mouse\n     * events, because any mouse event should show the controls. So we capture mouse\n     * events that bubble up to the player and report activity when that happens.\n     * With touch events it isn't as easy as `touchstart` and `touchend` toggle player\n     * controls. So touch events can't help us at the player level either.\n     *\n     * User activity gets checked asynchronously. So what could happen is a tap event\n     * on the video turns the controls off. Then the `touchend` event bubbles up to\n     * the player. Which, if it reported user activity, would turn the controls right\n     * back on. We also don't want to completely block touch events from bubbling up.\n     * Furthermore a `touchmove` event and anything other than a tap, should not turn\n     * controls back on.\n     *\n     * @listens Component#touchstart\n     * @listens Component#touchmove\n     * @listens Component#touchend\n     * @listens Component#touchcancel\n     */\n    ;\n\n    _proto.enableTouchActivity = function enableTouchActivity() {\n      // Don't continue if the root player doesn't support reporting user activity\n      if (!this.player() || !this.player().reportUserActivity) {\n        return;\n      } // listener for reporting that the user is active\n\n\n      var report = bind(this.player(), this.player().reportUserActivity);\n      var touchHolding;\n      this.on('touchstart', function () {\n        report(); // For as long as the they are touching the device or have their mouse down,\n        // we consider them active even if they're not moving their finger or mouse.\n        // So we want to continue to update that they are active\n\n        this.clearInterval(touchHolding); // report at the same interval as activityCheck\n\n        touchHolding = this.setInterval(report, 250);\n      });\n\n      var touchEnd = function touchEnd(event) {\n        report(); // stop the interval that maintains activity if the touch is holding\n\n        this.clearInterval(touchHolding);\n      };\n\n      this.on('touchmove', report);\n      this.on('touchend', touchEnd);\n      this.on('touchcancel', touchEnd);\n    }\n    /**\n     * A callback that has no parameters and is bound into `Component`s context.\n     *\n     * @callback Component~GenericCallback\n     * @this Component\n     */\n\n    /**\n     * Creates a function that runs after an `x` millisecond timeout. This function is a\n     * wrapper around `window.setTimeout`. There are a few reasons to use this one\n     * instead though:\n     * 1. It gets cleared via  {@link Component#clearTimeout} when\n     *    {@link Component#dispose} gets called.\n     * 2. The function callback will gets turned into a {@link Component~GenericCallback}\n     *\n     * > Note: You can't use `window.clearTimeout` on the id returned by this function. This\n     *         will cause its dispose listener not to get cleaned up! Please use\n     *         {@link Component#clearTimeout} or {@link Component#dispose} instead.\n     *\n     * @param {Component~GenericCallback} fn\n     *        The function that will be run after `timeout`.\n     *\n     * @param {number} timeout\n     *        Timeout in milliseconds to delay before executing the specified function.\n     *\n     * @return {number}\n     *         Returns a timeout ID that gets used to identify the timeout. It can also\n     *         get used in {@link Component#clearTimeout} to clear the timeout that\n     *         was set.\n     *\n     * @listens Component#dispose\n     * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/setTimeout}\n     */\n    ;\n\n    _proto.setTimeout = function setTimeout(fn, timeout) {\n      var _this2 = this;\n\n      // declare as variables so they are properly available in timeout function\n      // eslint-disable-next-line\n      var timeoutId, disposeFn;\n      fn = bind(this, fn);\n      timeoutId = window$1.setTimeout(function () {\n        _this2.off('dispose', disposeFn);\n\n        fn();\n      }, timeout);\n\n      disposeFn = function disposeFn() {\n        return _this2.clearTimeout(timeoutId);\n      };\n\n      disposeFn.guid = \"vjs-timeout-\" + timeoutId;\n      this.on('dispose', disposeFn);\n      return timeoutId;\n    }\n    /**\n     * Clears a timeout that gets created via `window.setTimeout` or\n     * {@link Component#setTimeout}. If you set a timeout via {@link Component#setTimeout}\n     * use this function instead of `window.clearTimout`. If you don't your dispose\n     * listener will not get cleaned up until {@link Component#dispose}!\n     *\n     * @param {number} timeoutId\n     *        The id of the timeout to clear. The return value of\n     *        {@link Component#setTimeout} or `window.setTimeout`.\n     *\n     * @return {number}\n     *         Returns the timeout id that was cleared.\n     *\n     * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/clearTimeout}\n     */\n    ;\n\n    _proto.clearTimeout = function clearTimeout(timeoutId) {\n      window$1.clearTimeout(timeoutId);\n\n      var disposeFn = function disposeFn() {};\n\n      disposeFn.guid = \"vjs-timeout-\" + timeoutId;\n      this.off('dispose', disposeFn);\n      return timeoutId;\n    }\n    /**\n     * Creates a function that gets run every `x` milliseconds. This function is a wrapper\n     * around `window.setInterval`. There are a few reasons to use this one instead though.\n     * 1. It gets cleared via  {@link Component#clearInterval} when\n     *    {@link Component#dispose} gets called.\n     * 2. The function callback will be a {@link Component~GenericCallback}\n     *\n     * @param {Component~GenericCallback} fn\n     *        The function to run every `x` seconds.\n     *\n     * @param {number} interval\n     *        Execute the specified function every `x` milliseconds.\n     *\n     * @return {number}\n     *         Returns an id that can be used to identify the interval. It can also be be used in\n     *         {@link Component#clearInterval} to clear the interval.\n     *\n     * @listens Component#dispose\n     * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/setInterval}\n     */\n    ;\n\n    _proto.setInterval = function setInterval(fn, interval) {\n      var _this3 = this;\n\n      fn = bind(this, fn);\n      var intervalId = window$1.setInterval(fn, interval);\n\n      var disposeFn = function disposeFn() {\n        return _this3.clearInterval(intervalId);\n      };\n\n      disposeFn.guid = \"vjs-interval-\" + intervalId;\n      this.on('dispose', disposeFn);\n      return intervalId;\n    }\n    /**\n     * Clears an interval that gets created via `window.setInterval` or\n     * {@link Component#setInterval}. If you set an inteval via {@link Component#setInterval}\n     * use this function instead of `window.clearInterval`. If you don't your dispose\n     * listener will not get cleaned up until {@link Component#dispose}!\n     *\n     * @param {number} intervalId\n     *        The id of the interval to clear. The return value of\n     *        {@link Component#setInterval} or `window.setInterval`.\n     *\n     * @return {number}\n     *         Returns the interval id that was cleared.\n     *\n     * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/clearInterval}\n     */\n    ;\n\n    _proto.clearInterval = function clearInterval(intervalId) {\n      window$1.clearInterval(intervalId);\n\n      var disposeFn = function disposeFn() {};\n\n      disposeFn.guid = \"vjs-interval-\" + intervalId;\n      this.off('dispose', disposeFn);\n      return intervalId;\n    }\n    /**\n     * Queues up a callback to be passed to requestAnimationFrame (rAF), but\n     * with a few extra bonuses:\n     *\n     * - Supports browsers that do not support rAF by falling back to\n     *   {@link Component#setTimeout}.\n     *\n     * - The callback is turned into a {@link Component~GenericCallback} (i.e.\n     *   bound to the component).\n     *\n     * - Automatic cancellation of the rAF callback is handled if the component\n     *   is disposed before it is called.\n     *\n     * @param  {Component~GenericCallback} fn\n     *         A function that will be bound to this component and executed just\n     *         before the browser's next repaint.\n     *\n     * @return {number}\n     *         Returns an rAF ID that gets used to identify the timeout. It can\n     *         also be used in {@link Component#cancelAnimationFrame} to cancel\n     *         the animation frame callback.\n     *\n     * @listens Component#dispose\n     * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/window/requestAnimationFrame}\n     */\n    ;\n\n    _proto.requestAnimationFrame = function requestAnimationFrame(fn) {\n      var _this4 = this;\n\n      // declare as variables so they are properly available in rAF function\n      // eslint-disable-next-line\n      var id, disposeFn;\n\n      if (this.supportsRaf_) {\n        fn = bind(this, fn);\n        id = window$1.requestAnimationFrame(function () {\n          _this4.off('dispose', disposeFn);\n\n          fn();\n        });\n\n        disposeFn = function disposeFn() {\n          return _this4.cancelAnimationFrame(id);\n        };\n\n        disposeFn.guid = \"vjs-raf-\" + id;\n        this.on('dispose', disposeFn);\n        return id;\n      } // Fall back to using a timer.\n\n\n      return this.setTimeout(fn, 1000 / 60);\n    }\n    /**\n     * Cancels a queued callback passed to {@link Component#requestAnimationFrame}\n     * (rAF).\n     *\n     * If you queue an rAF callback via {@link Component#requestAnimationFrame},\n     * use this function instead of `window.cancelAnimationFrame`. If you don't,\n     * your dispose listener will not get cleaned up until {@link Component#dispose}!\n     *\n     * @param {number} id\n     *        The rAF ID to clear. The return value of {@link Component#requestAnimationFrame}.\n     *\n     * @return {number}\n     *         Returns the rAF ID that was cleared.\n     *\n     * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/window/cancelAnimationFrame}\n     */\n    ;\n\n    _proto.cancelAnimationFrame = function cancelAnimationFrame(id) {\n      if (this.supportsRaf_) {\n        window$1.cancelAnimationFrame(id);\n\n        var disposeFn = function disposeFn() {};\n\n        disposeFn.guid = \"vjs-raf-\" + id;\n        this.off('dispose', disposeFn);\n        return id;\n      } // Fall back to using a timer.\n\n\n      return this.clearTimeout(id);\n    }\n    /**\n     * Register a `Component` with `videojs` given the name and the component.\n     *\n     * > NOTE: {@link Tech}s should not be registered as a `Component`. {@link Tech}s\n     *         should be registered using {@link Tech.registerTech} or\n     *         {@link videojs:videojs.registerTech}.\n     *\n     * > NOTE: This function can also be seen on videojs as\n     *         {@link videojs:videojs.registerComponent}.\n     *\n     * @param {string} name\n     *        The name of the `Component` to register.\n     *\n     * @param {Component} ComponentToRegister\n     *        The `Component` class to register.\n     *\n     * @return {Component}\n     *         The `Component` that was registered.\n     */\n    ;\n\n    Component.registerComponent = function registerComponent(name, ComponentToRegister) {\n      if (typeof name !== 'string' || !name) {\n        throw new Error(\"Illegal component name, \\\"\" + name + \"\\\"; must be a non-empty string.\");\n      }\n\n      var Tech = Component.getComponent('Tech'); // We need to make sure this check is only done if Tech has been registered.\n\n      var isTech = Tech && Tech.isTech(ComponentToRegister);\n      var isComp = Component === ComponentToRegister || Component.prototype.isPrototypeOf(ComponentToRegister.prototype);\n\n      if (isTech || !isComp) {\n        var reason;\n\n        if (isTech) {\n          reason = 'techs must be registered using Tech.registerTech()';\n        } else {\n          reason = 'must be a Component subclass';\n        }\n\n        throw new Error(\"Illegal component, \\\"\" + name + \"\\\"; \" + reason + \".\");\n      }\n\n      name = toTitleCase(name);\n\n      if (!Component.components_) {\n        Component.components_ = {};\n      }\n\n      var Player = Component.getComponent('Player');\n\n      if (name === 'Player' && Player && Player.players) {\n        var players = Player.players;\n        var playerNames = Object.keys(players); // If we have players that were disposed, then their name will still be\n        // in Players.players. So, we must loop through and verify that the value\n        // for each item is not null. This allows registration of the Player component\n        // after all players have been disposed or before any were created.\n\n        if (players && playerNames.length > 0 && playerNames.map(function (pname) {\n          return players[pname];\n        }).every(Boolean)) {\n          throw new Error('Can not register Player component after player has been created.');\n        }\n      }\n\n      Component.components_[name] = ComponentToRegister;\n      return ComponentToRegister;\n    }\n    /**\n     * Get a `Component` based on the name it was registered with.\n     *\n     * @param {string} name\n     *        The Name of the component to get.\n     *\n     * @return {Component}\n     *         The `Component` that got registered under the given name.\n     *\n     * @deprecated In `videojs` 6 this will not return `Component`s that were not\n     *             registered using {@link Component.registerComponent}. Currently we\n     *             check the global `videojs` object for a `Component` name and\n     *             return that if it exists.\n     */\n    ;\n\n    Component.getComponent = function getComponent(name) {\n      if (!name) {\n        return;\n      }\n\n      name = toTitleCase(name);\n\n      if (Component.components_ && Component.components_[name]) {\n        return Component.components_[name];\n      }\n    };\n\n    return Component;\n  }();\n  /**\n   * Whether or not this component supports `requestAnimationFrame`.\n   *\n   * This is exposed primarily for testing purposes.\n   *\n   * @private\n   * @type {Boolean}\n   */\n\n\n  Component.prototype.supportsRaf_ = typeof window$1.requestAnimationFrame === 'function' && typeof window$1.cancelAnimationFrame === 'function';\n  Component.registerComponent('Component', Component);\n\n  /**\n   * @file browser.js\n   * @module browser\n   */\n  var USER_AGENT = window$1.navigator && window$1.navigator.userAgent || '';\n  var webkitVersionMap = /AppleWebKit\\/([\\d.]+)/i.exec(USER_AGENT);\n  var appleWebkitVersion = webkitVersionMap ? parseFloat(webkitVersionMap.pop()) : null;\n  /**\n   * Whether or not this device is an iPad.\n   *\n   * @static\n   * @const\n   * @type {Boolean}\n   */\n\n  var IS_IPAD = /iPad/i.test(USER_AGENT);\n  /**\n   * Whether or not this device is an iPhone.\n   *\n   * @static\n   * @const\n   * @type {Boolean}\n   */\n  // The Facebook app's UIWebView identifies as both an iPhone and iPad, so\n  // to identify iPhones, we need to exclude iPads.\n  // http://artsy.github.io/blog/2012/10/18/the-perils-of-ios-user-agent-sniffing/\n\n  var IS_IPHONE = /iPhone/i.test(USER_AGENT) && !IS_IPAD;\n  /**\n   * Whether or not this device is an iPod.\n   *\n   * @static\n   * @const\n   * @type {Boolean}\n   */\n\n  var IS_IPOD = /iPod/i.test(USER_AGENT);\n  /**\n   * Whether or not this is an iOS device.\n   *\n   * @static\n   * @const\n   * @type {Boolean}\n   */\n\n  var IS_IOS = IS_IPHONE || IS_IPAD || IS_IPOD;\n  /**\n   * The detected iOS version - or `null`.\n   *\n   * @static\n   * @const\n   * @type {string|null}\n   */\n\n  var IOS_VERSION = function () {\n    var match = USER_AGENT.match(/OS (\\d+)_/i);\n\n    if (match && match[1]) {\n      return match[1];\n    }\n\n    return null;\n  }();\n  /**\n   * Whether or not this is an Android device.\n   *\n   * @static\n   * @const\n   * @type {Boolean}\n   */\n\n  var IS_ANDROID = /Android/i.test(USER_AGENT);\n  /**\n   * The detected Android version - or `null`.\n   *\n   * @static\n   * @const\n   * @type {number|string|null}\n   */\n\n  var ANDROID_VERSION = function () {\n    // This matches Android Major.Minor.Patch versions\n    // ANDROID_VERSION is Major.Minor as a Number, if Minor isn't available, then only Major is returned\n    var match = USER_AGENT.match(/Android (\\d+)(?:\\.(\\d+))?(?:\\.(\\d+))*/i);\n\n    if (!match) {\n      return null;\n    }\n\n    var major = match[1] && parseFloat(match[1]);\n    var minor = match[2] && parseFloat(match[2]);\n\n    if (major && minor) {\n      return parseFloat(match[1] + '.' + match[2]);\n    } else if (major) {\n      return major;\n    }\n\n    return null;\n  }();\n  /**\n   * Whether or not this is a native Android browser.\n   *\n   * @static\n   * @const\n   * @type {Boolean}\n   */\n\n  var IS_NATIVE_ANDROID = IS_ANDROID && ANDROID_VERSION < 5 && appleWebkitVersion < 537;\n  /**\n   * Whether or not this is Mozilla Firefox.\n   *\n   * @static\n   * @const\n   * @type {Boolean}\n   */\n\n  var IS_FIREFOX = /Firefox/i.test(USER_AGENT);\n  /**\n   * Whether or not this is Microsoft Edge.\n   *\n   * @static\n   * @const\n   * @type {Boolean}\n   */\n\n  var IS_EDGE = /Edge/i.test(USER_AGENT);\n  /**\n   * Whether or not this is Google Chrome.\n   *\n   * This will also be `true` for Chrome on iOS, which will have different support\n   * as it is actually Safari under the hood.\n   *\n   * @static\n   * @const\n   * @type {Boolean}\n   */\n\n  var IS_CHROME = !IS_EDGE && (/Chrome/i.test(USER_AGENT) || /CriOS/i.test(USER_AGENT));\n  /**\n   * The detected Google Chrome version - or `null`.\n   *\n   * @static\n   * @const\n   * @type {number|null}\n   */\n\n  var CHROME_VERSION = function () {\n    var match = USER_AGENT.match(/(Chrome|CriOS)\\/(\\d+)/);\n\n    if (match && match[2]) {\n      return parseFloat(match[2]);\n    }\n\n    return null;\n  }();\n  /**\n   * The detected Internet Explorer version - or `null`.\n   *\n   * @static\n   * @const\n   * @type {number|null}\n   */\n\n  var IE_VERSION = function () {\n    var result = /MSIE\\s(\\d+)\\.\\d/.exec(USER_AGENT);\n    var version = result && parseFloat(result[1]);\n\n    if (!version && /Trident\\/7.0/i.test(USER_AGENT) && /rv:11.0/.test(USER_AGENT)) {\n      // IE 11 has a different user agent string than other IE versions\n      version = 11.0;\n    }\n\n    return version;\n  }();\n  /**\n   * Whether or not this is desktop Safari.\n   *\n   * @static\n   * @const\n   * @type {Boolean}\n   */\n\n  var IS_SAFARI = /Safari/i.test(USER_AGENT) && !IS_CHROME && !IS_ANDROID && !IS_EDGE;\n  /**\n   * Whether or not this is any flavor of Safari - including iOS.\n   *\n   * @static\n   * @const\n   * @type {Boolean}\n   */\n\n  var IS_ANY_SAFARI = (IS_SAFARI || IS_IOS) && !IS_CHROME;\n  /**\n   * Whether or not this device is touch-enabled.\n   *\n   * @static\n   * @const\n   * @type {Boolean}\n   */\n\n  var TOUCH_ENABLED = isReal() && ('ontouchstart' in window$1 || window$1.navigator.maxTouchPoints || window$1.DocumentTouch && window$1.document instanceof window$1.DocumentTouch);\n\n  var browser = /*#__PURE__*/Object.freeze({\n    IS_IPAD: IS_IPAD,\n    IS_IPHONE: IS_IPHONE,\n    IS_IPOD: IS_IPOD,\n    IS_IOS: IS_IOS,\n    IOS_VERSION: IOS_VERSION,\n    IS_ANDROID: IS_ANDROID,\n    ANDROID_VERSION: ANDROID_VERSION,\n    IS_NATIVE_ANDROID: IS_NATIVE_ANDROID,\n    IS_FIREFOX: IS_FIREFOX,\n    IS_EDGE: IS_EDGE,\n    IS_CHROME: IS_CHROME,\n    CHROME_VERSION: CHROME_VERSION,\n    IE_VERSION: IE_VERSION,\n    IS_SAFARI: IS_SAFARI,\n    IS_ANY_SAFARI: IS_ANY_SAFARI,\n    TOUCH_ENABLED: TOUCH_ENABLED\n  });\n\n  /**\n   * @file time-ranges.js\n   * @module time-ranges\n   */\n\n  /**\n   * Returns the time for the specified index at the start or end\n   * of a TimeRange object.\n   *\n   * @typedef    {Function} TimeRangeIndex\n   *\n   * @param      {number} [index=0]\n   *             The range number to return the time for.\n   *\n   * @return     {number}\n   *             The time offset at the specified index.\n   *\n   * @deprecated The index argument must be provided.\n   *             In the future, leaving it out will throw an error.\n   */\n\n  /**\n   * An object that contains ranges of time.\n   *\n   * @typedef  {Object} TimeRange\n   *\n   * @property {number} length\n   *           The number of time ranges represented by this object.\n   *\n   * @property {module:time-ranges~TimeRangeIndex} start\n   *           Returns the time offset at which a specified time range begins.\n   *\n   * @property {module:time-ranges~TimeRangeIndex} end\n   *           Returns the time offset at which a specified time range ends.\n   *\n   * @see https://developer.mozilla.org/en-US/docs/Web/API/TimeRanges\n   */\n\n  /**\n   * Check if any of the time ranges are over the maximum index.\n   *\n   * @private\n   * @param   {string} fnName\n   *          The function name to use for logging\n   *\n   * @param   {number} index\n   *          The index to check\n   *\n   * @param   {number} maxIndex\n   *          The maximum possible index\n   *\n   * @throws  {Error} if the timeRanges provided are over the maxIndex\n   */\n  function rangeCheck(fnName, index, maxIndex) {\n    if (typeof index !== 'number' || index < 0 || index > maxIndex) {\n      throw new Error(\"Failed to execute '\" + fnName + \"' on 'TimeRanges': The index provided (\" + index + \") is non-numeric or out of bounds (0-\" + maxIndex + \").\");\n    }\n  }\n  /**\n   * Get the time for the specified index at the start or end\n   * of a TimeRange object.\n   *\n   * @private\n   * @param      {string} fnName\n   *             The function name to use for logging\n   *\n   * @param      {string} valueIndex\n   *             The property that should be used to get the time. should be\n   *             'start' or 'end'\n   *\n   * @param      {Array} ranges\n   *             An array of time ranges\n   *\n   * @param      {Array} [rangeIndex=0]\n   *             The index to start the search at\n   *\n   * @return     {number}\n   *             The time that offset at the specified index.\n   *\n   * @deprecated rangeIndex must be set to a value, in the future this will throw an error.\n   * @throws     {Error} if rangeIndex is more than the length of ranges\n   */\n\n\n  function getRange(fnName, valueIndex, ranges, rangeIndex) {\n    rangeCheck(fnName, rangeIndex, ranges.length - 1);\n    return ranges[rangeIndex][valueIndex];\n  }\n  /**\n   * Create a time range object given ranges of time.\n   *\n   * @private\n   * @param   {Array} [ranges]\n   *          An array of time ranges.\n   */\n\n\n  function createTimeRangesObj(ranges) {\n    if (ranges === undefined || ranges.length === 0) {\n      return {\n        length: 0,\n        start: function start() {\n          throw new Error('This TimeRanges object is empty');\n        },\n        end: function end() {\n          throw new Error('This TimeRanges object is empty');\n        }\n      };\n    }\n\n    return {\n      length: ranges.length,\n      start: getRange.bind(null, 'start', 0, ranges),\n      end: getRange.bind(null, 'end', 1, ranges)\n    };\n  }\n  /**\n   * Create a `TimeRange` object which mimics an\n   * {@link https://developer.mozilla.org/en-US/docs/Web/API/TimeRanges|HTML5 TimeRanges instance}.\n   *\n   * @param {number|Array[]} start\n   *        The start of a single range (a number) or an array of ranges (an\n   *        array of arrays of two numbers each).\n   *\n   * @param {number} end\n   *        The end of a single range. Cannot be used with the array form of\n   *        the `start` argument.\n   */\n\n\n  function createTimeRanges(start, end) {\n    if (Array.isArray(start)) {\n      return createTimeRangesObj(start);\n    } else if (start === undefined || end === undefined) {\n      return createTimeRangesObj();\n    }\n\n    return createTimeRangesObj([[start, end]]);\n  }\n\n  /**\n   * @file buffer.js\n   * @module buffer\n   */\n  /**\n   * Compute the percentage of the media that has been buffered.\n   *\n   * @param {TimeRange} buffered\n   *        The current `TimeRange` object representing buffered time ranges\n   *\n   * @param {number} duration\n   *        Total duration of the media\n   *\n   * @return {number}\n   *         Percent buffered of the total duration in decimal form.\n   */\n\n  function bufferedPercent(buffered, duration) {\n    var bufferedDuration = 0;\n    var start;\n    var end;\n\n    if (!duration) {\n      return 0;\n    }\n\n    if (!buffered || !buffered.length) {\n      buffered = createTimeRanges(0, 0);\n    }\n\n    for (var i = 0; i < buffered.length; i++) {\n      start = buffered.start(i);\n      end = buffered.end(i); // buffered end can be bigger than duration by a very small fraction\n\n      if (end > duration) {\n        end = duration;\n      }\n\n      bufferedDuration += end - start;\n    }\n\n    return bufferedDuration / duration;\n  }\n\n  /**\n   * @file fullscreen-api.js\n   * @module fullscreen-api\n   * @private\n   */\n  /**\n   * Store the browser-specific methods for the fullscreen API.\n   *\n   * @type {Object}\n   * @see [Specification]{@link https://fullscreen.spec.whatwg.org}\n   * @see [Map Approach From Screenfull.js]{@link https://github.com/sindresorhus/screenfull.js}\n   */\n\n  var FullscreenApi = {}; // browser API methods\n\n  var apiMap = [['requestFullscreen', 'exitFullscreen', 'fullscreenElement', 'fullscreenEnabled', 'fullscreenchange', 'fullscreenerror'], // WebKit\n  ['webkitRequestFullscreen', 'webkitExitFullscreen', 'webkitFullscreenElement', 'webkitFullscreenEnabled', 'webkitfullscreenchange', 'webkitfullscreenerror'], // Old WebKit (Safari 5.1)\n  ['webkitRequestFullScreen', 'webkitCancelFullScreen', 'webkitCurrentFullScreenElement', 'webkitCancelFullScreen', 'webkitfullscreenchange', 'webkitfullscreenerror'], // Mozilla\n  ['mozRequestFullScreen', 'mozCancelFullScreen', 'mozFullScreenElement', 'mozFullScreenEnabled', 'mozfullscreenchange', 'mozfullscreenerror'], // Microsoft\n  ['msRequestFullscreen', 'msExitFullscreen', 'msFullscreenElement', 'msFullscreenEnabled', 'MSFullscreenChange', 'MSFullscreenError']];\n  var specApi = apiMap[0];\n  var browserApi;\n  var prefixedAPI = false; // determine the supported set of functions\n\n  for (var i = 0; i < apiMap.length; i++) {\n    // check for exitFullscreen function\n    if (apiMap[i][1] in document) {\n      browserApi = apiMap[i];\n      break;\n    }\n  } // map the browser API names to the spec API names\n\n\n  if (browserApi) {\n    for (var _i = 0; _i < browserApi.length; _i++) {\n      FullscreenApi[specApi[_i]] = browserApi[_i];\n    }\n\n    prefixedAPI = browserApi[0] === specApi[0];\n  }\n\n  /**\n   * @file media-error.js\n   */\n  /**\n   * A Custom `MediaError` class which mimics the standard HTML5 `MediaError` class.\n   *\n   * @param {number|string|Object|MediaError} value\n   *        This can be of multiple types:\n   *        - number: should be a standard error code\n   *        - string: an error message (the code will be 0)\n   *        - Object: arbitrary properties\n   *        - `MediaError` (native): used to populate a video.js `MediaError` object\n   *        - `MediaError` (video.js): will return itself if it's already a\n   *          video.js `MediaError` object.\n   *\n   * @see [MediaError Spec]{@link https://dev.w3.org/html5/spec-author-view/video.html#mediaerror}\n   * @see [Encrypted MediaError Spec]{@link https://www.w3.org/TR/2013/WD-encrypted-media-20130510/#error-codes}\n   *\n   * @class MediaError\n   */\n\n  function MediaError(value) {\n    // Allow redundant calls to this constructor to avoid having `instanceof`\n    // checks peppered around the code.\n    if (value instanceof MediaError) {\n      return value;\n    }\n\n    if (typeof value === 'number') {\n      this.code = value;\n    } else if (typeof value === 'string') {\n      // default code is zero, so this is a custom error\n      this.message = value;\n    } else if (isObject(value)) {\n      // We assign the `code` property manually because native `MediaError` objects\n      // do not expose it as an own/enumerable property of the object.\n      if (typeof value.code === 'number') {\n        this.code = value.code;\n      }\n\n      assign(this, value);\n    }\n\n    if (!this.message) {\n      this.message = MediaError.defaultMessages[this.code] || '';\n    }\n  }\n  /**\n   * The error code that refers two one of the defined `MediaError` types\n   *\n   * @type {Number}\n   */\n\n\n  MediaError.prototype.code = 0;\n  /**\n   * An optional message that to show with the error. Message is not part of the HTML5\n   * video spec but allows for more informative custom errors.\n   *\n   * @type {String}\n   */\n\n  MediaError.prototype.message = '';\n  /**\n   * An optional status code that can be set by plugins to allow even more detail about\n   * the error. For example a plugin might provide a specific HTTP status code and an\n   * error message for that code. Then when the plugin gets that error this class will\n   * know how to display an error message for it. This allows a custom message to show\n   * up on the `Player` error overlay.\n   *\n   * @type {Array}\n   */\n\n  MediaError.prototype.status = null;\n  /**\n   * Errors indexed by the W3C standard. The order **CANNOT CHANGE**! See the\n   * specification listed under {@link MediaError} for more information.\n   *\n   * @enum {array}\n   * @readonly\n   * @property {string} 0 - MEDIA_ERR_CUSTOM\n   * @property {string} 1 - MEDIA_ERR_ABORTED\n   * @property {string} 2 - MEDIA_ERR_NETWORK\n   * @property {string} 3 - MEDIA_ERR_DECODE\n   * @property {string} 4 - MEDIA_ERR_SRC_NOT_SUPPORTED\n   * @property {string} 5 - MEDIA_ERR_ENCRYPTED\n   */\n\n  MediaError.errorTypes = ['MEDIA_ERR_CUSTOM', 'MEDIA_ERR_ABORTED', 'MEDIA_ERR_NETWORK', 'MEDIA_ERR_DECODE', 'MEDIA_ERR_SRC_NOT_SUPPORTED', 'MEDIA_ERR_ENCRYPTED'];\n  /**\n   * The default `MediaError` messages based on the {@link MediaError.errorTypes}.\n   *\n   * @type {Array}\n   * @constant\n   */\n\n  MediaError.defaultMessages = {\n    1: 'You aborted the media playback',\n    2: 'A network error caused the media download to fail part-way.',\n    3: 'The media playback was aborted due to a corruption problem or because the media used features your browser did not support.',\n    4: 'The media could not be loaded, either because the server or network failed or because the format is not supported.',\n    5: 'The media is encrypted and we do not have the keys to decrypt it.'\n  }; // Add types as properties on MediaError\n  // e.g. MediaError.MEDIA_ERR_SRC_NOT_SUPPORTED = 4;\n\n  for (var errNum = 0; errNum < MediaError.errorTypes.length; errNum++) {\n    MediaError[MediaError.errorTypes[errNum]] = errNum; // values should be accessible on both the class and instance\n\n    MediaError.prototype[MediaError.errorTypes[errNum]] = errNum;\n  } // jsdocs for instance/static members added above\n\n  var tuple = SafeParseTuple;\n\n  function SafeParseTuple(obj, reviver) {\n    var json;\n    var error = null;\n\n    try {\n      json = JSON.parse(obj, reviver);\n    } catch (err) {\n      error = err;\n    }\n\n    return [error, json];\n  }\n\n  /**\n   * Returns whether an object is `Promise`-like (i.e. has a `then` method).\n   *\n   * @param  {Object}  value\n   *         An object that may or may not be `Promise`-like.\n   *\n   * @return {boolean}\n   *         Whether or not the object is `Promise`-like.\n   */\n  function isPromise(value) {\n    return value !== undefined && value !== null && typeof value.then === 'function';\n  }\n  /**\n   * Silence a Promise-like object.\n   *\n   * This is useful for avoiding non-harmful, but potentially confusing \"uncaught\n   * play promise\" rejection error messages.\n   *\n   * @param  {Object} value\n   *         An object that may or may not be `Promise`-like.\n   */\n\n  function silencePromise(value) {\n    if (isPromise(value)) {\n      value.then(null, function (e) {});\n    }\n  }\n\n  /**\n   * @file text-track-list-converter.js Utilities for capturing text track state and\n   * re-creating tracks based on a capture.\n   *\n   * @module text-track-list-converter\n   */\n\n  /**\n   * Examine a single {@link TextTrack} and return a JSON-compatible javascript object that\n   * represents the {@link TextTrack}'s state.\n   *\n   * @param {TextTrack} track\n   *        The text track to query.\n   *\n   * @return {Object}\n   *         A serializable javascript representation of the TextTrack.\n   * @private\n   */\n  var trackToJson_ = function trackToJson_(track) {\n    var ret = ['kind', 'label', 'language', 'id', 'inBandMetadataTrackDispatchType', 'mode', 'src'].reduce(function (acc, prop, i) {\n      if (track[prop]) {\n        acc[prop] = track[prop];\n      }\n\n      return acc;\n    }, {\n      cues: track.cues && Array.prototype.map.call(track.cues, function (cue) {\n        return {\n          startTime: cue.startTime,\n          endTime: cue.endTime,\n          text: cue.text,\n          id: cue.id\n        };\n      })\n    });\n    return ret;\n  };\n  /**\n   * Examine a {@link Tech} and return a JSON-compatible javascript array that represents the\n   * state of all {@link TextTrack}s currently configured. The return array is compatible with\n   * {@link text-track-list-converter:jsonToTextTracks}.\n   *\n   * @param {Tech} tech\n   *        The tech object to query\n   *\n   * @return {Array}\n   *         A serializable javascript representation of the {@link Tech}s\n   *         {@link TextTrackList}.\n   */\n\n\n  var textTracksToJson = function textTracksToJson(tech) {\n    var trackEls = tech.$$('track');\n    var trackObjs = Array.prototype.map.call(trackEls, function (t) {\n      return t.track;\n    });\n    var tracks = Array.prototype.map.call(trackEls, function (trackEl) {\n      var json = trackToJson_(trackEl.track);\n\n      if (trackEl.src) {\n        json.src = trackEl.src;\n      }\n\n      return json;\n    });\n    return tracks.concat(Array.prototype.filter.call(tech.textTracks(), function (track) {\n      return trackObjs.indexOf(track) === -1;\n    }).map(trackToJson_));\n  };\n  /**\n   * Create a set of remote {@link TextTrack}s on a {@link Tech} based on an array of javascript\n   * object {@link TextTrack} representations.\n   *\n   * @param {Array} json\n   *        An array of `TextTrack` representation objects, like those that would be\n   *        produced by `textTracksToJson`.\n   *\n   * @param {Tech} tech\n   *        The `Tech` to create the `TextTrack`s on.\n   */\n\n\n  var jsonToTextTracks = function jsonToTextTracks(json, tech) {\n    json.forEach(function (track) {\n      var addedTrack = tech.addRemoteTextTrack(track).track;\n\n      if (!track.src && track.cues) {\n        track.cues.forEach(function (cue) {\n          return addedTrack.addCue(cue);\n        });\n      }\n    });\n    return tech.textTracks();\n  };\n\n  var textTrackConverter = {\n    textTracksToJson: textTracksToJson,\n    jsonToTextTracks: jsonToTextTracks,\n    trackToJson_: trackToJson_\n  };\n\n  var commonjsGlobal = typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};\n\n  function createCommonjsModule(fn, module) {\n  \treturn module = { exports: {} }, fn(module, module.exports), module.exports;\n  }\n\n  var keycode = createCommonjsModule(function (module, exports) {\n    // Source: http://jsfiddle.net/vWx8V/\n    // http://stackoverflow.com/questions/5603195/full-list-of-javascript-keycodes\n\n    /**\n     * Conenience method returns corresponding value for given keyName or keyCode.\n     *\n     * @param {Mixed} keyCode {Number} or keyName {String}\n     * @return {Mixed}\n     * @api public\n     */\n    function keyCode(searchInput) {\n      // Keyboard Events\n      if (searchInput && 'object' === typeof searchInput) {\n        var hasKeyCode = searchInput.which || searchInput.keyCode || searchInput.charCode;\n        if (hasKeyCode) searchInput = hasKeyCode;\n      } // Numbers\n\n\n      if ('number' === typeof searchInput) return names[searchInput]; // Everything else (cast to string)\n\n      var search = String(searchInput); // check codes\n\n      var foundNamedKey = codes[search.toLowerCase()];\n      if (foundNamedKey) return foundNamedKey; // check aliases\n\n      var foundNamedKey = aliases[search.toLowerCase()];\n      if (foundNamedKey) return foundNamedKey; // weird character?\n\n      if (search.length === 1) return search.charCodeAt(0);\n      return undefined;\n    }\n    /**\n     * Compares a keyboard event with a given keyCode or keyName.\n     *\n     * @param {Event} event Keyboard event that should be tested\n     * @param {Mixed} keyCode {Number} or keyName {String}\n     * @return {Boolean}\n     * @api public\n     */\n\n\n    keyCode.isEventKey = function isEventKey(event, nameOrCode) {\n      if (event && 'object' === typeof event) {\n        var keyCode = event.which || event.keyCode || event.charCode;\n\n        if (keyCode === null || keyCode === undefined) {\n          return false;\n        }\n\n        if (typeof nameOrCode === 'string') {\n          // check codes\n          var foundNamedKey = codes[nameOrCode.toLowerCase()];\n\n          if (foundNamedKey) {\n            return foundNamedKey === keyCode;\n          } // check aliases\n\n\n          var foundNamedKey = aliases[nameOrCode.toLowerCase()];\n\n          if (foundNamedKey) {\n            return foundNamedKey === keyCode;\n          }\n        } else if (typeof nameOrCode === 'number') {\n          return nameOrCode === keyCode;\n        }\n\n        return false;\n      }\n    };\n\n    exports = module.exports = keyCode;\n    /**\n     * Get by name\n     *\n     *   exports.code['enter'] // => 13\n     */\n\n    var codes = exports.code = exports.codes = {\n      'backspace': 8,\n      'tab': 9,\n      'enter': 13,\n      'shift': 16,\n      'ctrl': 17,\n      'alt': 18,\n      'pause/break': 19,\n      'caps lock': 20,\n      'esc': 27,\n      'space': 32,\n      'page up': 33,\n      'page down': 34,\n      'end': 35,\n      'home': 36,\n      'left': 37,\n      'up': 38,\n      'right': 39,\n      'down': 40,\n      'insert': 45,\n      'delete': 46,\n      'command': 91,\n      'left command': 91,\n      'right command': 93,\n      'numpad *': 106,\n      'numpad +': 107,\n      'numpad -': 109,\n      'numpad .': 110,\n      'numpad /': 111,\n      'num lock': 144,\n      'scroll lock': 145,\n      'my computer': 182,\n      'my calculator': 183,\n      ';': 186,\n      '=': 187,\n      ',': 188,\n      '-': 189,\n      '.': 190,\n      '/': 191,\n      '`': 192,\n      '[': 219,\n      '\\\\': 220,\n      ']': 221,\n      \"'\": 222 // Helper aliases\n\n    };\n    var aliases = exports.aliases = {\n      'windows': 91,\n      '⇧': 16,\n      '⌥': 18,\n      '⌃': 17,\n      '⌘': 91,\n      'ctl': 17,\n      'control': 17,\n      'option': 18,\n      'pause': 19,\n      'break': 19,\n      'caps': 20,\n      'return': 13,\n      'escape': 27,\n      'spc': 32,\n      'spacebar': 32,\n      'pgup': 33,\n      'pgdn': 34,\n      'ins': 45,\n      'del': 46,\n      'cmd': 91\n      /*!\n       * Programatically add the following\n       */\n      // lower case chars\n\n    };\n\n    for (i = 97; i < 123; i++) {\n      codes[String.fromCharCode(i)] = i - 32;\n    } // numbers\n\n\n    for (var i = 48; i < 58; i++) {\n      codes[i - 48] = i;\n    } // function keys\n\n\n    for (i = 1; i < 13; i++) {\n      codes['f' + i] = i + 111;\n    } // numpad keys\n\n\n    for (i = 0; i < 10; i++) {\n      codes['numpad ' + i] = i + 96;\n    }\n    /**\n     * Get by code\n     *\n     *   exports.name[13] // => 'Enter'\n     */\n\n\n    var names = exports.names = exports.title = {}; // title for backward compat\n    // Create reverse mapping\n\n    for (i in codes) {\n      names[codes[i]] = i;\n    } // Add aliases\n\n\n    for (var alias in aliases) {\n      codes[alias] = aliases[alias];\n    }\n  });\n  var keycode_1 = keycode.code;\n  var keycode_2 = keycode.codes;\n  var keycode_3 = keycode.aliases;\n  var keycode_4 = keycode.names;\n  var keycode_5 = keycode.title;\n\n  var MODAL_CLASS_NAME = 'vjs-modal-dialog';\n  /**\n   * The `ModalDialog` displays over the video and its controls, which blocks\n   * interaction with the player until it is closed.\n   *\n   * Modal dialogs include a \"Close\" button and will close when that button\n   * is activated - or when ESC is pressed anywhere.\n   *\n   * @extends Component\n   */\n\n  var ModalDialog =\n  /*#__PURE__*/\n  function (_Component) {\n    _inheritsLoose(ModalDialog, _Component);\n\n    /**\n     * Create an instance of this class.\n     *\n     * @param {Player} player\n     *        The `Player` that this class should be attached to.\n     *\n     * @param {Object} [options]\n     *        The key/value store of player options.\n     *\n     * @param {Mixed} [options.content=undefined]\n     *        Provide customized content for this modal.\n     *\n     * @param {string} [options.description]\n     *        A text description for the modal, primarily for accessibility.\n     *\n     * @param {boolean} [options.fillAlways=false]\n     *        Normally, modals are automatically filled only the first time\n     *        they open. This tells the modal to refresh its content\n     *        every time it opens.\n     *\n     * @param {string} [options.label]\n     *        A text label for the modal, primarily for accessibility.\n     *\n     * @param {boolean} [options.temporary=true]\n     *        If `true`, the modal can only be opened once; it will be\n     *        disposed as soon as it's closed.\n     *\n     * @param {boolean} [options.uncloseable=false]\n     *        If `true`, the user will not be able to close the modal\n     *        through the UI in the normal ways. Programmatic closing is\n     *        still possible.\n     */\n    function ModalDialog(player, options) {\n      var _this;\n\n      _this = _Component.call(this, player, options) || this;\n      _this.opened_ = _this.hasBeenOpened_ = _this.hasBeenFilled_ = false;\n\n      _this.closeable(!_this.options_.uncloseable);\n\n      _this.content(_this.options_.content); // Make sure the contentEl is defined AFTER any children are initialized\n      // because we only want the contents of the modal in the contentEl\n      // (not the UI elements like the close button).\n\n\n      _this.contentEl_ = createEl('div', {\n        className: MODAL_CLASS_NAME + \"-content\"\n      }, {\n        role: 'document'\n      });\n      _this.descEl_ = createEl('p', {\n        className: MODAL_CLASS_NAME + \"-description vjs-control-text\",\n        id: _this.el().getAttribute('aria-describedby')\n      });\n      textContent(_this.descEl_, _this.description());\n\n      _this.el_.appendChild(_this.descEl_);\n\n      _this.el_.appendChild(_this.contentEl_);\n\n      return _this;\n    }\n    /**\n     * Create the `ModalDialog`'s DOM element\n     *\n     * @return {Element}\n     *         The DOM element that gets created.\n     */\n\n\n    var _proto = ModalDialog.prototype;\n\n    _proto.createEl = function createEl$$1() {\n      return _Component.prototype.createEl.call(this, 'div', {\n        className: this.buildCSSClass(),\n        tabIndex: -1\n      }, {\n        'aria-describedby': this.id() + \"_description\",\n        'aria-hidden': 'true',\n        'aria-label': this.label(),\n        'role': 'dialog'\n      });\n    };\n\n    _proto.dispose = function dispose() {\n      this.contentEl_ = null;\n      this.descEl_ = null;\n      this.previouslyActiveEl_ = null;\n\n      _Component.prototype.dispose.call(this);\n    }\n    /**\n     * Builds the default DOM `className`.\n     *\n     * @return {string}\n     *         The DOM `className` for this object.\n     */\n    ;\n\n    _proto.buildCSSClass = function buildCSSClass() {\n      return MODAL_CLASS_NAME + \" vjs-hidden \" + _Component.prototype.buildCSSClass.call(this);\n    }\n    /**\n     * Handles `keydown` events on the document, looking for ESC, which closes\n     * the modal.\n     *\n     * @param {EventTarget~Event} event\n     *        The keypress that triggered this event.\n     *\n     * @listens keydown\n     */\n    ;\n\n    _proto.handleKeyPress = function handleKeyPress(event) {\n      if (keycode.isEventKey(event, 'Escape') && this.closeable()) {\n        this.close();\n      }\n    }\n    /**\n     * Returns the label string for this modal. Primarily used for accessibility.\n     *\n     * @return {string}\n     *         the localized or raw label of this modal.\n     */\n    ;\n\n    _proto.label = function label() {\n      return this.localize(this.options_.label || 'Modal Window');\n    }\n    /**\n     * Returns the description string for this modal. Primarily used for\n     * accessibility.\n     *\n     * @return {string}\n     *         The localized or raw description of this modal.\n     */\n    ;\n\n    _proto.description = function description() {\n      var desc = this.options_.description || this.localize('This is a modal window.'); // Append a universal closeability message if the modal is closeable.\n\n      if (this.closeable()) {\n        desc += ' ' + this.localize('This modal can be closed by pressing the Escape key or activating the close button.');\n      }\n\n      return desc;\n    }\n    /**\n     * Opens the modal.\n     *\n     * @fires ModalDialog#beforemodalopen\n     * @fires ModalDialog#modalopen\n     */\n    ;\n\n    _proto.open = function open() {\n      if (!this.opened_) {\n        var player = this.player();\n        /**\n          * Fired just before a `ModalDialog` is opened.\n          *\n          * @event ModalDialog#beforemodalopen\n          * @type {EventTarget~Event}\n          */\n\n        this.trigger('beforemodalopen');\n        this.opened_ = true; // Fill content if the modal has never opened before and\n        // never been filled.\n\n        if (this.options_.fillAlways || !this.hasBeenOpened_ && !this.hasBeenFilled_) {\n          this.fill();\n        } // If the player was playing, pause it and take note of its previously\n        // playing state.\n\n\n        this.wasPlaying_ = !player.paused();\n\n        if (this.options_.pauseOnOpen && this.wasPlaying_) {\n          player.pause();\n        }\n\n        if (this.closeable()) {\n          this.on(this.el_.ownerDocument, 'keydown', bind(this, this.handleKeyPress));\n        } // Hide controls and note if they were enabled.\n\n\n        this.hadControls_ = player.controls();\n        player.controls(false);\n        this.show();\n        this.conditionalFocus_();\n        this.el().setAttribute('aria-hidden', 'false');\n        /**\n          * Fired just after a `ModalDialog` is opened.\n          *\n          * @event ModalDialog#modalopen\n          * @type {EventTarget~Event}\n          */\n\n        this.trigger('modalopen');\n        this.hasBeenOpened_ = true;\n      }\n    }\n    /**\n     * If the `ModalDialog` is currently open or closed.\n     *\n     * @param  {boolean} [value]\n     *         If given, it will open (`true`) or close (`false`) the modal.\n     *\n     * @return {boolean}\n     *         the current open state of the modaldialog\n     */\n    ;\n\n    _proto.opened = function opened(value) {\n      if (typeof value === 'boolean') {\n        this[value ? 'open' : 'close']();\n      }\n\n      return this.opened_;\n    }\n    /**\n     * Closes the modal, does nothing if the `ModalDialog` is\n     * not open.\n     *\n     * @fires ModalDialog#beforemodalclose\n     * @fires ModalDialog#modalclose\n     */\n    ;\n\n    _proto.close = function close() {\n      if (!this.opened_) {\n        return;\n      }\n\n      var player = this.player();\n      /**\n        * Fired just before a `ModalDialog` is closed.\n        *\n        * @event ModalDialog#beforemodalclose\n        * @type {EventTarget~Event}\n        */\n\n      this.trigger('beforemodalclose');\n      this.opened_ = false;\n\n      if (this.wasPlaying_ && this.options_.pauseOnOpen) {\n        player.play();\n      }\n\n      if (this.closeable()) {\n        this.off(this.el_.ownerDocument, 'keydown', bind(this, this.handleKeyPress));\n      }\n\n      if (this.hadControls_) {\n        player.controls(true);\n      }\n\n      this.hide();\n      this.el().setAttribute('aria-hidden', 'true');\n      /**\n        * Fired just after a `ModalDialog` is closed.\n        *\n        * @event ModalDialog#modalclose\n        * @type {EventTarget~Event}\n        */\n\n      this.trigger('modalclose');\n      this.conditionalBlur_();\n\n      if (this.options_.temporary) {\n        this.dispose();\n      }\n    }\n    /**\n     * Check to see if the `ModalDialog` is closeable via the UI.\n     *\n     * @param  {boolean} [value]\n     *         If given as a boolean, it will set the `closeable` option.\n     *\n     * @return {boolean}\n     *         Returns the final value of the closable option.\n     */\n    ;\n\n    _proto.closeable = function closeable(value) {\n      if (typeof value === 'boolean') {\n        var closeable = this.closeable_ = !!value;\n        var close = this.getChild('closeButton'); // If this is being made closeable and has no close button, add one.\n\n        if (closeable && !close) {\n          // The close button should be a child of the modal - not its\n          // content element, so temporarily change the content element.\n          var temp = this.contentEl_;\n          this.contentEl_ = this.el_;\n          close = this.addChild('closeButton', {\n            controlText: 'Close Modal Dialog'\n          });\n          this.contentEl_ = temp;\n          this.on(close, 'close', this.close);\n        } // If this is being made uncloseable and has a close button, remove it.\n\n\n        if (!closeable && close) {\n          this.off(close, 'close', this.close);\n          this.removeChild(close);\n          close.dispose();\n        }\n      }\n\n      return this.closeable_;\n    }\n    /**\n     * Fill the modal's content element with the modal's \"content\" option.\n     * The content element will be emptied before this change takes place.\n     */\n    ;\n\n    _proto.fill = function fill() {\n      this.fillWith(this.content());\n    }\n    /**\n     * Fill the modal's content element with arbitrary content.\n     * The content element will be emptied before this change takes place.\n     *\n     * @fires ModalDialog#beforemodalfill\n     * @fires ModalDialog#modalfill\n     *\n     * @param {Mixed} [content]\n     *        The same rules apply to this as apply to the `content` option.\n     */\n    ;\n\n    _proto.fillWith = function fillWith(content) {\n      var contentEl = this.contentEl();\n      var parentEl = contentEl.parentNode;\n      var nextSiblingEl = contentEl.nextSibling;\n      /**\n        * Fired just before a `ModalDialog` is filled with content.\n        *\n        * @event ModalDialog#beforemodalfill\n        * @type {EventTarget~Event}\n        */\n\n      this.trigger('beforemodalfill');\n      this.hasBeenFilled_ = true; // Detach the content element from the DOM before performing\n      // manipulation to avoid modifying the live DOM multiple times.\n\n      parentEl.removeChild(contentEl);\n      this.empty();\n      insertContent(contentEl, content);\n      /**\n       * Fired just after a `ModalDialog` is filled with content.\n       *\n       * @event ModalDialog#modalfill\n       * @type {EventTarget~Event}\n       */\n\n      this.trigger('modalfill'); // Re-inject the re-filled content element.\n\n      if (nextSiblingEl) {\n        parentEl.insertBefore(contentEl, nextSiblingEl);\n      } else {\n        parentEl.appendChild(contentEl);\n      } // make sure that the close button is last in the dialog DOM\n\n\n      var closeButton = this.getChild('closeButton');\n\n      if (closeButton) {\n        parentEl.appendChild(closeButton.el_);\n      }\n    }\n    /**\n     * Empties the content element. This happens anytime the modal is filled.\n     *\n     * @fires ModalDialog#beforemodalempty\n     * @fires ModalDialog#modalempty\n     */\n    ;\n\n    _proto.empty = function empty() {\n      /**\n      * Fired just before a `ModalDialog` is emptied.\n      *\n      * @event ModalDialog#beforemodalempty\n      * @type {EventTarget~Event}\n      */\n      this.trigger('beforemodalempty');\n      emptyEl(this.contentEl());\n      /**\n      * Fired just after a `ModalDialog` is emptied.\n      *\n      * @event ModalDialog#modalempty\n      * @type {EventTarget~Event}\n      */\n\n      this.trigger('modalempty');\n    }\n    /**\n     * Gets or sets the modal content, which gets normalized before being\n     * rendered into the DOM.\n     *\n     * This does not update the DOM or fill the modal, but it is called during\n     * that process.\n     *\n     * @param  {Mixed} [value]\n     *         If defined, sets the internal content value to be used on the\n     *         next call(s) to `fill`. This value is normalized before being\n     *         inserted. To \"clear\" the internal content value, pass `null`.\n     *\n     * @return {Mixed}\n     *         The current content of the modal dialog\n     */\n    ;\n\n    _proto.content = function content(value) {\n      if (typeof value !== 'undefined') {\n        this.content_ = value;\n      }\n\n      return this.content_;\n    }\n    /**\n     * conditionally focus the modal dialog if focus was previously on the player.\n     *\n     * @private\n     */\n    ;\n\n    _proto.conditionalFocus_ = function conditionalFocus_() {\n      var activeEl = document.activeElement;\n      var playerEl = this.player_.el_;\n      this.previouslyActiveEl_ = null;\n\n      if (playerEl.contains(activeEl) || playerEl === activeEl) {\n        this.previouslyActiveEl_ = activeEl;\n        this.focus();\n        this.on(document, 'keydown', this.handleKeyDown);\n      }\n    }\n    /**\n     * conditionally blur the element and refocus the last focused element\n     *\n     * @private\n     */\n    ;\n\n    _proto.conditionalBlur_ = function conditionalBlur_() {\n      if (this.previouslyActiveEl_) {\n        this.previouslyActiveEl_.focus();\n        this.previouslyActiveEl_ = null;\n      }\n\n      this.off(document, 'keydown', this.handleKeyDown);\n    }\n    /**\n     * Keydown handler. Attached when modal is focused.\n     *\n     * @listens keydown\n     */\n    ;\n\n    _proto.handleKeyDown = function handleKeyDown(event) {\n      // exit early if it isn't a tab key\n      if (!keycode.isEventKey(event, 'Tab')) {\n        return;\n      }\n\n      var focusableEls = this.focusableEls_();\n      var activeEl = this.el_.querySelector(':focus');\n      var focusIndex;\n\n      for (var i = 0; i < focusableEls.length; i++) {\n        if (activeEl === focusableEls[i]) {\n          focusIndex = i;\n          break;\n        }\n      }\n\n      if (document.activeElement === this.el_) {\n        focusIndex = 0;\n      }\n\n      if (event.shiftKey && focusIndex === 0) {\n        focusableEls[focusableEls.length - 1].focus();\n        event.preventDefault();\n      } else if (!event.shiftKey && focusIndex === focusableEls.length - 1) {\n        focusableEls[0].focus();\n        event.preventDefault();\n      }\n    }\n    /**\n     * get all focusable elements\n     *\n     * @private\n     */\n    ;\n\n    _proto.focusableEls_ = function focusableEls_() {\n      var allChildren = this.el_.querySelectorAll('*');\n      return Array.prototype.filter.call(allChildren, function (child) {\n        return (child instanceof window$1.HTMLAnchorElement || child instanceof window$1.HTMLAreaElement) && child.hasAttribute('href') || (child instanceof window$1.HTMLInputElement || child instanceof window$1.HTMLSelectElement || child instanceof window$1.HTMLTextAreaElement || child instanceof window$1.HTMLButtonElement) && !child.hasAttribute('disabled') || child instanceof window$1.HTMLIFrameElement || child instanceof window$1.HTMLObjectElement || child instanceof window$1.HTMLEmbedElement || child.hasAttribute('tabindex') && child.getAttribute('tabindex') !== -1 || child.hasAttribute('contenteditable');\n      });\n    };\n\n    return ModalDialog;\n  }(Component);\n  /**\n   * Default options for `ModalDialog` default options.\n   *\n   * @type {Object}\n   * @private\n   */\n\n\n  ModalDialog.prototype.options_ = {\n    pauseOnOpen: true,\n    temporary: true\n  };\n  Component.registerComponent('ModalDialog', ModalDialog);\n\n  /**\n   * Common functionaliy between {@link TextTrackList}, {@link AudioTrackList}, and\n   * {@link VideoTrackList}\n   *\n   * @extends EventTarget\n   */\n\n  var TrackList =\n  /*#__PURE__*/\n  function (_EventTarget) {\n    _inheritsLoose(TrackList, _EventTarget);\n\n    /**\n     * Create an instance of this class\n     *\n     * @param {Track[]} tracks\n     *        A list of tracks to initialize the list with.\n     *\n     * @abstract\n     */\n    function TrackList(tracks) {\n      var _this;\n\n      if (tracks === void 0) {\n        tracks = [];\n      }\n\n      _this = _EventTarget.call(this) || this;\n      _this.tracks_ = [];\n      /**\n       * @memberof TrackList\n       * @member {number} length\n       *         The current number of `Track`s in the this Trackist.\n       * @instance\n       */\n\n      Object.defineProperty(_assertThisInitialized(_assertThisInitialized(_this)), 'length', {\n        get: function get() {\n          return this.tracks_.length;\n        }\n      });\n\n      for (var i = 0; i < tracks.length; i++) {\n        _this.addTrack(tracks[i]);\n      }\n\n      return _this;\n    }\n    /**\n     * Add a {@link Track} to the `TrackList`\n     *\n     * @param {Track} track\n     *        The audio, video, or text track to add to the list.\n     *\n     * @fires TrackList#addtrack\n     */\n\n\n    var _proto = TrackList.prototype;\n\n    _proto.addTrack = function addTrack(track) {\n      var index = this.tracks_.length;\n\n      if (!('' + index in this)) {\n        Object.defineProperty(this, index, {\n          get: function get() {\n            return this.tracks_[index];\n          }\n        });\n      } // Do not add duplicate tracks\n\n\n      if (this.tracks_.indexOf(track) === -1) {\n        this.tracks_.push(track);\n        /**\n         * Triggered when a track is added to a track list.\n         *\n         * @event TrackList#addtrack\n         * @type {EventTarget~Event}\n         * @property {Track} track\n         *           A reference to track that was added.\n         */\n\n        this.trigger({\n          track: track,\n          type: 'addtrack'\n        });\n      }\n    }\n    /**\n     * Remove a {@link Track} from the `TrackList`\n     *\n     * @param {Track} rtrack\n     *        The audio, video, or text track to remove from the list.\n     *\n     * @fires TrackList#removetrack\n     */\n    ;\n\n    _proto.removeTrack = function removeTrack(rtrack) {\n      var track;\n\n      for (var i = 0, l = this.length; i < l; i++) {\n        if (this[i] === rtrack) {\n          track = this[i];\n\n          if (track.off) {\n            track.off();\n          }\n\n          this.tracks_.splice(i, 1);\n          break;\n        }\n      }\n\n      if (!track) {\n        return;\n      }\n      /**\n       * Triggered when a track is removed from track list.\n       *\n       * @event TrackList#removetrack\n       * @type {EventTarget~Event}\n       * @property {Track} track\n       *           A reference to track that was removed.\n       */\n\n\n      this.trigger({\n        track: track,\n        type: 'removetrack'\n      });\n    }\n    /**\n     * Get a Track from the TrackList by a tracks id\n     *\n     * @param {string} id - the id of the track to get\n     * @method getTrackById\n     * @return {Track}\n     * @private\n     */\n    ;\n\n    _proto.getTrackById = function getTrackById(id) {\n      var result = null;\n\n      for (var i = 0, l = this.length; i < l; i++) {\n        var track = this[i];\n\n        if (track.id === id) {\n          result = track;\n          break;\n        }\n      }\n\n      return result;\n    };\n\n    return TrackList;\n  }(EventTarget);\n  /**\n   * Triggered when a different track is selected/enabled.\n   *\n   * @event TrackList#change\n   * @type {EventTarget~Event}\n   */\n\n  /**\n   * Events that can be called with on + eventName. See {@link EventHandler}.\n   *\n   * @property {Object} TrackList#allowedEvents_\n   * @private\n   */\n\n\n  TrackList.prototype.allowedEvents_ = {\n    change: 'change',\n    addtrack: 'addtrack',\n    removetrack: 'removetrack'\n  }; // emulate attribute EventHandler support to allow for feature detection\n\n  for (var event in TrackList.prototype.allowedEvents_) {\n    TrackList.prototype['on' + event] = null;\n  }\n\n  /**\n   * Anywhere we call this function we diverge from the spec\n   * as we only support one enabled audiotrack at a time\n   *\n   * @param {AudioTrackList} list\n   *        list to work on\n   *\n   * @param {AudioTrack} track\n   *        The track to skip\n   *\n   * @private\n   */\n\n  var disableOthers = function disableOthers(list, track) {\n    for (var i = 0; i < list.length; i++) {\n      if (!Object.keys(list[i]).length || track.id === list[i].id) {\n        continue;\n      } // another audio track is enabled, disable it\n\n\n      list[i].enabled = false;\n    }\n  };\n  /**\n   * The current list of {@link AudioTrack} for a media file.\n   *\n   * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#audiotracklist}\n   * @extends TrackList\n   */\n\n\n  var AudioTrackList =\n  /*#__PURE__*/\n  function (_TrackList) {\n    _inheritsLoose(AudioTrackList, _TrackList);\n\n    /**\n     * Create an instance of this class.\n     *\n     * @param {AudioTrack[]} [tracks=[]]\n     *        A list of `AudioTrack` to instantiate the list with.\n     */\n    function AudioTrackList(tracks) {\n      var _this;\n\n      if (tracks === void 0) {\n        tracks = [];\n      }\n\n      // make sure only 1 track is enabled\n      // sorted from last index to first index\n      for (var i = tracks.length - 1; i >= 0; i--) {\n        if (tracks[i].enabled) {\n          disableOthers(tracks, tracks[i]);\n          break;\n        }\n      }\n\n      _this = _TrackList.call(this, tracks) || this;\n      _this.changing_ = false;\n      return _this;\n    }\n    /**\n     * Add an {@link AudioTrack} to the `AudioTrackList`.\n     *\n     * @param {AudioTrack} track\n     *        The AudioTrack to add to the list\n     *\n     * @fires TrackList#addtrack\n     */\n\n\n    var _proto = AudioTrackList.prototype;\n\n    _proto.addTrack = function addTrack(track) {\n      var _this2 = this;\n\n      if (track.enabled) {\n        disableOthers(this, track);\n      }\n\n      _TrackList.prototype.addTrack.call(this, track); // native tracks don't have this\n\n\n      if (!track.addEventListener) {\n        return;\n      }\n      /**\n       * @listens AudioTrack#enabledchange\n       * @fires TrackList#change\n       */\n\n\n      track.addEventListener('enabledchange', function () {\n        // when we are disabling other tracks (since we don't support\n        // more than one track at a time) we will set changing_\n        // to true so that we don't trigger additional change events\n        if (_this2.changing_) {\n          return;\n        }\n\n        _this2.changing_ = true;\n        disableOthers(_this2, track);\n        _this2.changing_ = false;\n\n        _this2.trigger('change');\n      });\n    };\n\n    return AudioTrackList;\n  }(TrackList);\n\n  /**\n   * Un-select all other {@link VideoTrack}s that are selected.\n   *\n   * @param {VideoTrackList} list\n   *        list to work on\n   *\n   * @param {VideoTrack} track\n   *        The track to skip\n   *\n   * @private\n   */\n\n  var disableOthers$1 = function disableOthers(list, track) {\n    for (var i = 0; i < list.length; i++) {\n      if (!Object.keys(list[i]).length || track.id === list[i].id) {\n        continue;\n      } // another video track is enabled, disable it\n\n\n      list[i].selected = false;\n    }\n  };\n  /**\n   * The current list of {@link VideoTrack} for a video.\n   *\n   * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#videotracklist}\n   * @extends TrackList\n   */\n\n\n  var VideoTrackList =\n  /*#__PURE__*/\n  function (_TrackList) {\n    _inheritsLoose(VideoTrackList, _TrackList);\n\n    /**\n     * Create an instance of this class.\n     *\n     * @param {VideoTrack[]} [tracks=[]]\n     *        A list of `VideoTrack` to instantiate the list with.\n     */\n    function VideoTrackList(tracks) {\n      var _this;\n\n      if (tracks === void 0) {\n        tracks = [];\n      }\n\n      // make sure only 1 track is enabled\n      // sorted from last index to first index\n      for (var i = tracks.length - 1; i >= 0; i--) {\n        if (tracks[i].selected) {\n          disableOthers$1(tracks, tracks[i]);\n          break;\n        }\n      }\n\n      _this = _TrackList.call(this, tracks) || this;\n      _this.changing_ = false;\n      /**\n       * @member {number} VideoTrackList#selectedIndex\n       *         The current index of the selected {@link VideoTrack`}.\n       */\n\n      Object.defineProperty(_assertThisInitialized(_assertThisInitialized(_this)), 'selectedIndex', {\n        get: function get() {\n          for (var _i = 0; _i < this.length; _i++) {\n            if (this[_i].selected) {\n              return _i;\n            }\n          }\n\n          return -1;\n        },\n        set: function set() {}\n      });\n      return _this;\n    }\n    /**\n     * Add a {@link VideoTrack} to the `VideoTrackList`.\n     *\n     * @param {VideoTrack} track\n     *        The VideoTrack to add to the list\n     *\n     * @fires TrackList#addtrack\n     */\n\n\n    var _proto = VideoTrackList.prototype;\n\n    _proto.addTrack = function addTrack(track) {\n      var _this2 = this;\n\n      if (track.selected) {\n        disableOthers$1(this, track);\n      }\n\n      _TrackList.prototype.addTrack.call(this, track); // native tracks don't have this\n\n\n      if (!track.addEventListener) {\n        return;\n      }\n      /**\n       * @listens VideoTrack#selectedchange\n       * @fires TrackList#change\n       */\n\n\n      track.addEventListener('selectedchange', function () {\n        if (_this2.changing_) {\n          return;\n        }\n\n        _this2.changing_ = true;\n        disableOthers$1(_this2, track);\n        _this2.changing_ = false;\n\n        _this2.trigger('change');\n      });\n    };\n\n    return VideoTrackList;\n  }(TrackList);\n\n  /**\n   * The current list of {@link TextTrack} for a media file.\n   *\n   * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttracklist}\n   * @extends TrackList\n   */\n\n  var TextTrackList =\n  /*#__PURE__*/\n  function (_TrackList) {\n    _inheritsLoose(TextTrackList, _TrackList);\n\n    function TextTrackList() {\n      return _TrackList.apply(this, arguments) || this;\n    }\n\n    var _proto = TextTrackList.prototype;\n\n    /**\n     * Add a {@link TextTrack} to the `TextTrackList`\n     *\n     * @param {TextTrack} track\n     *        The text track to add to the list.\n     *\n     * @fires TrackList#addtrack\n     */\n    _proto.addTrack = function addTrack(track) {\n      _TrackList.prototype.addTrack.call(this, track);\n      /**\n       * @listens TextTrack#modechange\n       * @fires TrackList#change\n       */\n\n\n      track.addEventListener('modechange', bind(this, function () {\n        this.queueTrigger('change');\n      }));\n      var nonLanguageTextTrackKind = ['metadata', 'chapters'];\n\n      if (nonLanguageTextTrackKind.indexOf(track.kind) === -1) {\n        track.addEventListener('modechange', bind(this, function () {\n          this.trigger('selectedlanguagechange');\n        }));\n      }\n    };\n\n    return TextTrackList;\n  }(TrackList);\n\n  /**\n   * @file html-track-element-list.js\n   */\n\n  /**\n   * The current list of {@link HtmlTrackElement}s.\n   */\n  var HtmlTrackElementList =\n  /*#__PURE__*/\n  function () {\n    /**\n     * Create an instance of this class.\n     *\n     * @param {HtmlTrackElement[]} [tracks=[]]\n     *        A list of `HtmlTrackElement` to instantiate the list with.\n     */\n    function HtmlTrackElementList(trackElements) {\n      if (trackElements === void 0) {\n        trackElements = [];\n      }\n\n      this.trackElements_ = [];\n      /**\n       * @memberof HtmlTrackElementList\n       * @member {number} length\n       *         The current number of `Track`s in the this Trackist.\n       * @instance\n       */\n\n      Object.defineProperty(this, 'length', {\n        get: function get() {\n          return this.trackElements_.length;\n        }\n      });\n\n      for (var i = 0, length = trackElements.length; i < length; i++) {\n        this.addTrackElement_(trackElements[i]);\n      }\n    }\n    /**\n     * Add an {@link HtmlTrackElement} to the `HtmlTrackElementList`\n     *\n     * @param {HtmlTrackElement} trackElement\n     *        The track element to add to the list.\n     *\n     * @private\n     */\n\n\n    var _proto = HtmlTrackElementList.prototype;\n\n    _proto.addTrackElement_ = function addTrackElement_(trackElement) {\n      var index = this.trackElements_.length;\n\n      if (!('' + index in this)) {\n        Object.defineProperty(this, index, {\n          get: function get() {\n            return this.trackElements_[index];\n          }\n        });\n      } // Do not add duplicate elements\n\n\n      if (this.trackElements_.indexOf(trackElement) === -1) {\n        this.trackElements_.push(trackElement);\n      }\n    }\n    /**\n     * Get an {@link HtmlTrackElement} from the `HtmlTrackElementList` given an\n     * {@link TextTrack}.\n     *\n     * @param {TextTrack} track\n     *        The track associated with a track element.\n     *\n     * @return {HtmlTrackElement|undefined}\n     *         The track element that was found or undefined.\n     *\n     * @private\n     */\n    ;\n\n    _proto.getTrackElementByTrack_ = function getTrackElementByTrack_(track) {\n      var trackElement_;\n\n      for (var i = 0, length = this.trackElements_.length; i < length; i++) {\n        if (track === this.trackElements_[i].track) {\n          trackElement_ = this.trackElements_[i];\n          break;\n        }\n      }\n\n      return trackElement_;\n    }\n    /**\n     * Remove a {@link HtmlTrackElement} from the `HtmlTrackElementList`\n     *\n     * @param {HtmlTrackElement} trackElement\n     *        The track element to remove from the list.\n     *\n     * @private\n     */\n    ;\n\n    _proto.removeTrackElement_ = function removeTrackElement_(trackElement) {\n      for (var i = 0, length = this.trackElements_.length; i < length; i++) {\n        if (trackElement === this.trackElements_[i]) {\n          this.trackElements_.splice(i, 1);\n          break;\n        }\n      }\n    };\n\n    return HtmlTrackElementList;\n  }();\n\n  /**\n   * @file text-track-cue-list.js\n   */\n\n  /**\n   * @typedef {Object} TextTrackCueList~TextTrackCue\n   *\n   * @property {string} id\n   *           The unique id for this text track cue\n   *\n   * @property {number} startTime\n   *           The start time for this text track cue\n   *\n   * @property {number} endTime\n   *           The end time for this text track cue\n   *\n   * @property {boolean} pauseOnExit\n   *           Pause when the end time is reached if true.\n   *\n   * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttrackcue}\n   */\n\n  /**\n   * A List of TextTrackCues.\n   *\n   * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttrackcuelist}\n   */\n  var TextTrackCueList =\n  /*#__PURE__*/\n  function () {\n    /**\n     * Create an instance of this class..\n     *\n     * @param {Array} cues\n     *        A list of cues to be initialized with\n     */\n    function TextTrackCueList(cues) {\n      TextTrackCueList.prototype.setCues_.call(this, cues);\n      /**\n       * @memberof TextTrackCueList\n       * @member {number} length\n       *         The current number of `TextTrackCue`s in the TextTrackCueList.\n       * @instance\n       */\n\n      Object.defineProperty(this, 'length', {\n        get: function get() {\n          return this.length_;\n        }\n      });\n    }\n    /**\n     * A setter for cues in this list. Creates getters\n     * an an index for the cues.\n     *\n     * @param {Array} cues\n     *        An array of cues to set\n     *\n     * @private\n     */\n\n\n    var _proto = TextTrackCueList.prototype;\n\n    _proto.setCues_ = function setCues_(cues) {\n      var oldLength = this.length || 0;\n      var i = 0;\n      var l = cues.length;\n      this.cues_ = cues;\n      this.length_ = cues.length;\n\n      var defineProp = function defineProp(index) {\n        if (!('' + index in this)) {\n          Object.defineProperty(this, '' + index, {\n            get: function get() {\n              return this.cues_[index];\n            }\n          });\n        }\n      };\n\n      if (oldLength < l) {\n        i = oldLength;\n\n        for (; i < l; i++) {\n          defineProp.call(this, i);\n        }\n      }\n    }\n    /**\n     * Get a `TextTrackCue` that is currently in the `TextTrackCueList` by id.\n     *\n     * @param {string} id\n     *        The id of the cue that should be searched for.\n     *\n     * @return {TextTrackCueList~TextTrackCue|null}\n     *         A single cue or null if none was found.\n     */\n    ;\n\n    _proto.getCueById = function getCueById(id) {\n      var result = null;\n\n      for (var i = 0, l = this.length; i < l; i++) {\n        var cue = this[i];\n\n        if (cue.id === id) {\n          result = cue;\n          break;\n        }\n      }\n\n      return result;\n    };\n\n    return TextTrackCueList;\n  }();\n\n  /**\n   * @file track-kinds.js\n   */\n\n  /**\n   * All possible `VideoTrackKind`s\n   *\n   * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-videotrack-kind\n   * @typedef VideoTrack~Kind\n   * @enum\n   */\n  var VideoTrackKind = {\n    alternative: 'alternative',\n    captions: 'captions',\n    main: 'main',\n    sign: 'sign',\n    subtitles: 'subtitles',\n    commentary: 'commentary'\n  };\n  /**\n   * All possible `AudioTrackKind`s\n   *\n   * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-audiotrack-kind\n   * @typedef AudioTrack~Kind\n   * @enum\n   */\n\n  var AudioTrackKind = {\n    'alternative': 'alternative',\n    'descriptions': 'descriptions',\n    'main': 'main',\n    'main-desc': 'main-desc',\n    'translation': 'translation',\n    'commentary': 'commentary'\n  };\n  /**\n   * All possible `TextTrackKind`s\n   *\n   * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-texttrack-kind\n   * @typedef TextTrack~Kind\n   * @enum\n   */\n\n  var TextTrackKind = {\n    subtitles: 'subtitles',\n    captions: 'captions',\n    descriptions: 'descriptions',\n    chapters: 'chapters',\n    metadata: 'metadata'\n  };\n  /**\n   * All possible `TextTrackMode`s\n   *\n   * @see https://html.spec.whatwg.org/multipage/embedded-content.html#texttrackmode\n   * @typedef TextTrack~Mode\n   * @enum\n   */\n\n  var TextTrackMode = {\n    disabled: 'disabled',\n    hidden: 'hidden',\n    showing: 'showing'\n  };\n\n  /**\n   * A Track class that contains all of the common functionality for {@link AudioTrack},\n   * {@link VideoTrack}, and {@link TextTrack}.\n   *\n   * > Note: This class should not be used directly\n   *\n   * @see {@link https://html.spec.whatwg.org/multipage/embedded-content.html}\n   * @extends EventTarget\n   * @abstract\n   */\n\n  var Track =\n  /*#__PURE__*/\n  function (_EventTarget) {\n    _inheritsLoose(Track, _EventTarget);\n\n    /**\n     * Create an instance of this class.\n     *\n     * @param {Object} [options={}]\n     *        Object of option names and values\n     *\n     * @param {string} [options.kind='']\n     *        A valid kind for the track type you are creating.\n     *\n     * @param {string} [options.id='vjs_track_' + Guid.newGUID()]\n     *        A unique id for this AudioTrack.\n     *\n     * @param {string} [options.label='']\n     *        The menu label for this track.\n     *\n     * @param {string} [options.language='']\n     *        A valid two character language code.\n     *\n     * @abstract\n     */\n    function Track(options) {\n      var _this;\n\n      if (options === void 0) {\n        options = {};\n      }\n\n      _this = _EventTarget.call(this) || this;\n      var trackProps = {\n        id: options.id || 'vjs_track_' + newGUID(),\n        kind: options.kind || '',\n        label: options.label || '',\n        language: options.language || ''\n      };\n      /**\n       * @memberof Track\n       * @member {string} id\n       *         The id of this track. Cannot be changed after creation.\n       * @instance\n       *\n       * @readonly\n       */\n\n      /**\n       * @memberof Track\n       * @member {string} kind\n       *         The kind of track that this is. Cannot be changed after creation.\n       * @instance\n       *\n       * @readonly\n       */\n\n      /**\n       * @memberof Track\n       * @member {string} label\n       *         The label of this track. Cannot be changed after creation.\n       * @instance\n       *\n       * @readonly\n       */\n\n      /**\n       * @memberof Track\n       * @member {string} language\n       *         The two letter language code for this track. Cannot be changed after\n       *         creation.\n       * @instance\n       *\n       * @readonly\n       */\n\n      var _loop = function _loop(key) {\n        Object.defineProperty(_assertThisInitialized(_assertThisInitialized(_this)), key, {\n          get: function get() {\n            return trackProps[key];\n          },\n          set: function set() {}\n        });\n      };\n\n      for (var key in trackProps) {\n        _loop(key);\n      }\n\n      return _this;\n    }\n\n    return Track;\n  }(EventTarget);\n\n  /**\n   * @file url.js\n   * @module url\n   */\n  /**\n   * @typedef {Object} url:URLObject\n   *\n   * @property {string} protocol\n   *           The protocol of the url that was parsed.\n   *\n   * @property {string} hostname\n   *           The hostname of the url that was parsed.\n   *\n   * @property {string} port\n   *           The port of the url that was parsed.\n   *\n   * @property {string} pathname\n   *           The pathname of the url that was parsed.\n   *\n   * @property {string} search\n   *           The search query of the url that was parsed.\n   *\n   * @property {string} hash\n   *           The hash of the url that was parsed.\n   *\n   * @property {string} host\n   *           The host of the url that was parsed.\n   */\n\n  /**\n   * Resolve and parse the elements of a URL.\n   *\n   * @function\n   * @param    {String} url\n   *           The url to parse\n   *\n   * @return   {url:URLObject}\n   *           An object of url details\n   */\n\n  var parseUrl = function parseUrl(url) {\n    var props = ['protocol', 'hostname', 'port', 'pathname', 'search', 'hash', 'host']; // add the url to an anchor and let the browser parse the URL\n\n    var a = document.createElement('a');\n    a.href = url; // IE8 (and 9?) Fix\n    // ie8 doesn't parse the URL correctly until the anchor is actually\n    // added to the body, and an innerHTML is needed to trigger the parsing\n\n    var addToBody = a.host === '' && a.protocol !== 'file:';\n    var div;\n\n    if (addToBody) {\n      div = document.createElement('div');\n      div.innerHTML = \"<a href=\\\"\" + url + \"\\\"></a>\";\n      a = div.firstChild; // prevent the div from affecting layout\n\n      div.setAttribute('style', 'display:none; position:absolute;');\n      document.body.appendChild(div);\n    } // Copy the specific URL properties to a new object\n    // This is also needed for IE8 because the anchor loses its\n    // properties when it's removed from the dom\n\n\n    var details = {};\n\n    for (var i = 0; i < props.length; i++) {\n      details[props[i]] = a[props[i]];\n    } // IE9 adds the port to the host property unlike everyone else. If\n    // a port identifier is added for standard ports, strip it.\n\n\n    if (details.protocol === 'http:') {\n      details.host = details.host.replace(/:80$/, '');\n    }\n\n    if (details.protocol === 'https:') {\n      details.host = details.host.replace(/:443$/, '');\n    }\n\n    if (!details.protocol) {\n      details.protocol = window$1.location.protocol;\n    }\n\n    if (addToBody) {\n      document.body.removeChild(div);\n    }\n\n    return details;\n  };\n  /**\n   * Get absolute version of relative URL. Used to tell Flash the correct URL.\n   *\n   * @function\n   * @param    {string} url\n   *           URL to make absolute\n   *\n   * @return   {string}\n   *           Absolute URL\n   *\n   * @see      http://stackoverflow.com/questions/470832/getting-an-absolute-url-from-a-relative-one-ie6-issue\n   */\n\n  var getAbsoluteURL = function getAbsoluteURL(url) {\n    // Check if absolute URL\n    if (!url.match(/^https?:\\/\\//)) {\n      // Convert to absolute URL. Flash hosted off-site needs an absolute URL.\n      var div = document.createElement('div');\n      div.innerHTML = \"<a href=\\\"\" + url + \"\\\">x</a>\";\n      url = div.firstChild.href;\n    }\n\n    return url;\n  };\n  /**\n   * Returns the extension of the passed file name. It will return an empty string\n   * if passed an invalid path.\n   *\n   * @function\n   * @param    {string} path\n   *           The fileName path like '/path/to/file.mp4'\n   *\n   * @return  {string}\n   *           The extension in lower case or an empty string if no\n   *           extension could be found.\n   */\n\n  var getFileExtension = function getFileExtension(path) {\n    if (typeof path === 'string') {\n      var splitPathRe = /^(\\/?)([\\s\\S]*?)((?:\\.{1,2}|[^\\/]+?)(\\.([^\\.\\/\\?]+)))(?:[\\/]*|[\\?].*)$/i;\n      var pathParts = splitPathRe.exec(path);\n\n      if (pathParts) {\n        return pathParts.pop().toLowerCase();\n      }\n    }\n\n    return '';\n  };\n  /**\n   * Returns whether the url passed is a cross domain request or not.\n   *\n   * @function\n   * @param    {string} url\n   *           The url to check.\n   *\n   * @return   {boolean}\n   *           Whether it is a cross domain request or not.\n   */\n\n  var isCrossOrigin = function isCrossOrigin(url) {\n    var winLoc = window$1.location;\n    var urlInfo = parseUrl(url); // IE8 protocol relative urls will return ':' for protocol\n\n    var srcProtocol = urlInfo.protocol === ':' ? winLoc.protocol : urlInfo.protocol; // Check if url is for another domain/origin\n    // IE8 doesn't know location.origin, so we won't rely on it here\n\n    var crossOrigin = srcProtocol + urlInfo.host !== winLoc.protocol + winLoc.host;\n    return crossOrigin;\n  };\n\n  var Url = /*#__PURE__*/Object.freeze({\n    parseUrl: parseUrl,\n    getAbsoluteURL: getAbsoluteURL,\n    getFileExtension: getFileExtension,\n    isCrossOrigin: isCrossOrigin\n  });\n\n  var isFunction_1 = isFunction;\n  var toString$1 = Object.prototype.toString;\n\n  function isFunction(fn) {\n    var string = toString$1.call(fn);\n    return string === '[object Function]' || typeof fn === 'function' && string !== '[object RegExp]' || typeof window !== 'undefined' && ( // IE8 and below\n    fn === window.setTimeout || fn === window.alert || fn === window.confirm || fn === window.prompt);\n  }\n\n  var trim_1 = createCommonjsModule(function (module, exports) {\n    exports = module.exports = trim;\n\n    function trim(str) {\n      return str.replace(/^\\s*|\\s*$/g, '');\n    }\n\n    exports.left = function (str) {\n      return str.replace(/^\\s*/, '');\n    };\n\n    exports.right = function (str) {\n      return str.replace(/\\s*$/, '');\n    };\n  });\n  var trim_2 = trim_1.left;\n  var trim_3 = trim_1.right;\n\n  var fnToStr = Function.prototype.toString;\n  var constructorRegex = /^\\s*class\\b/;\n\n  var isES6ClassFn = function isES6ClassFunction(value) {\n    try {\n      var fnStr = fnToStr.call(value);\n      return constructorRegex.test(fnStr);\n    } catch (e) {\n      return false; // not a function\n    }\n  };\n\n  var tryFunctionObject = function tryFunctionToStr(value) {\n    try {\n      if (isES6ClassFn(value)) {\n        return false;\n      }\n\n      fnToStr.call(value);\n      return true;\n    } catch (e) {\n      return false;\n    }\n  };\n\n  var toStr = Object.prototype.toString;\n  var fnClass = '[object Function]';\n  var genClass = '[object GeneratorFunction]';\n  var hasToStringTag = typeof Symbol === 'function' && typeof Symbol.toStringTag === 'symbol';\n\n  var isCallable = function isCallable(value) {\n    if (!value) {\n      return false;\n    }\n\n    if (typeof value !== 'function' && typeof value !== 'object') {\n      return false;\n    }\n\n    if (typeof value === 'function' && !value.prototype) {\n      return true;\n    }\n\n    if (hasToStringTag) {\n      return tryFunctionObject(value);\n    }\n\n    if (isES6ClassFn(value)) {\n      return false;\n    }\n\n    var strClass = toStr.call(value);\n    return strClass === fnClass || strClass === genClass;\n  };\n\n  var toStr$1 = Object.prototype.toString;\n  var hasOwnProperty = Object.prototype.hasOwnProperty;\n\n  var forEachArray = function forEachArray(array, iterator, receiver) {\n    for (var i = 0, len = array.length; i < len; i++) {\n      if (hasOwnProperty.call(array, i)) {\n        if (receiver == null) {\n          iterator(array[i], i, array);\n        } else {\n          iterator.call(receiver, array[i], i, array);\n        }\n      }\n    }\n  };\n\n  var forEachString = function forEachString(string, iterator, receiver) {\n    for (var i = 0, len = string.length; i < len; i++) {\n      // no such thing as a sparse string.\n      if (receiver == null) {\n        iterator(string.charAt(i), i, string);\n      } else {\n        iterator.call(receiver, string.charAt(i), i, string);\n      }\n    }\n  };\n\n  var forEachObject = function forEachObject(object, iterator, receiver) {\n    for (var k in object) {\n      if (hasOwnProperty.call(object, k)) {\n        if (receiver == null) {\n          iterator(object[k], k, object);\n        } else {\n          iterator.call(receiver, object[k], k, object);\n        }\n      }\n    }\n  };\n\n  var forEach = function forEach(list, iterator, thisArg) {\n    if (!isCallable(iterator)) {\n      throw new TypeError('iterator must be a function');\n    }\n\n    var receiver;\n\n    if (arguments.length >= 3) {\n      receiver = thisArg;\n    }\n\n    if (toStr$1.call(list) === '[object Array]') {\n      forEachArray(list, iterator, receiver);\n    } else if (typeof list === 'string') {\n      forEachString(list, iterator, receiver);\n    } else {\n      forEachObject(list, iterator, receiver);\n    }\n  };\n\n  var forEach_1 = forEach;\n\n  var isArray = function isArray(arg) {\n    return Object.prototype.toString.call(arg) === '[object Array]';\n  };\n\n  var parseHeaders = function parseHeaders(headers) {\n    if (!headers) return {};\n    var result = {};\n    forEach_1(trim_1(headers).split('\\n'), function (row) {\n      var index = row.indexOf(':'),\n          key = trim_1(row.slice(0, index)).toLowerCase(),\n          value = trim_1(row.slice(index + 1));\n\n      if (typeof result[key] === 'undefined') {\n        result[key] = value;\n      } else if (isArray(result[key])) {\n        result[key].push(value);\n      } else {\n        result[key] = [result[key], value];\n      }\n    });\n    return result;\n  };\n\n  var immutable = extend;\n  var hasOwnProperty$1 = Object.prototype.hasOwnProperty;\n\n  function extend() {\n    var target = {};\n\n    for (var i = 0; i < arguments.length; i++) {\n      var source = arguments[i];\n\n      for (var key in source) {\n        if (hasOwnProperty$1.call(source, key)) {\n          target[key] = source[key];\n        }\n      }\n    }\n\n    return target;\n  }\n\n  var xhr = createXHR;\n  createXHR.XMLHttpRequest = window$1.XMLHttpRequest || noop;\n  createXHR.XDomainRequest = \"withCredentials\" in new createXHR.XMLHttpRequest() ? createXHR.XMLHttpRequest : window$1.XDomainRequest;\n  forEachArray$1([\"get\", \"put\", \"post\", \"patch\", \"head\", \"delete\"], function (method) {\n    createXHR[method === \"delete\" ? \"del\" : method] = function (uri, options, callback) {\n      options = initParams(uri, options, callback);\n      options.method = method.toUpperCase();\n      return _createXHR(options);\n    };\n  });\n\n  function forEachArray$1(array, iterator) {\n    for (var i = 0; i < array.length; i++) {\n      iterator(array[i]);\n    }\n  }\n\n  function isEmpty(obj) {\n    for (var i in obj) {\n      if (obj.hasOwnProperty(i)) return false;\n    }\n\n    return true;\n  }\n\n  function initParams(uri, options, callback) {\n    var params = uri;\n\n    if (isFunction_1(options)) {\n      callback = options;\n\n      if (typeof uri === \"string\") {\n        params = {\n          uri: uri\n        };\n      }\n    } else {\n      params = immutable(options, {\n        uri: uri\n      });\n    }\n\n    params.callback = callback;\n    return params;\n  }\n\n  function createXHR(uri, options, callback) {\n    options = initParams(uri, options, callback);\n    return _createXHR(options);\n  }\n\n  function _createXHR(options) {\n    if (typeof options.callback === \"undefined\") {\n      throw new Error(\"callback argument missing\");\n    }\n\n    var called = false;\n\n    var callback = function cbOnce(err, response, body) {\n      if (!called) {\n        called = true;\n        options.callback(err, response, body);\n      }\n    };\n\n    function readystatechange() {\n      if (xhr.readyState === 4) {\n        setTimeout(loadFunc, 0);\n      }\n    }\n\n    function getBody() {\n      // Chrome with requestType=blob throws errors arround when even testing access to responseText\n      var body = undefined;\n\n      if (xhr.response) {\n        body = xhr.response;\n      } else {\n        body = xhr.responseText || getXml(xhr);\n      }\n\n      if (isJson) {\n        try {\n          body = JSON.parse(body);\n        } catch (e) {}\n      }\n\n      return body;\n    }\n\n    function errorFunc(evt) {\n      clearTimeout(timeoutTimer);\n\n      if (!(evt instanceof Error)) {\n        evt = new Error(\"\" + (evt || \"Unknown XMLHttpRequest Error\"));\n      }\n\n      evt.statusCode = 0;\n      return callback(evt, failureResponse);\n    } // will load the data & process the response in a special response object\n\n\n    function loadFunc() {\n      if (aborted) return;\n      var status;\n      clearTimeout(timeoutTimer);\n\n      if (options.useXDR && xhr.status === undefined) {\n        //IE8 CORS GET successful response doesn't have a status field, but body is fine\n        status = 200;\n      } else {\n        status = xhr.status === 1223 ? 204 : xhr.status;\n      }\n\n      var response = failureResponse;\n      var err = null;\n\n      if (status !== 0) {\n        response = {\n          body: getBody(),\n          statusCode: status,\n          method: method,\n          headers: {},\n          url: uri,\n          rawRequest: xhr\n        };\n\n        if (xhr.getAllResponseHeaders) {\n          //remember xhr can in fact be XDR for CORS in IE\n          response.headers = parseHeaders(xhr.getAllResponseHeaders());\n        }\n      } else {\n        err = new Error(\"Internal XMLHttpRequest Error\");\n      }\n\n      return callback(err, response, response.body);\n    }\n\n    var xhr = options.xhr || null;\n\n    if (!xhr) {\n      if (options.cors || options.useXDR) {\n        xhr = new createXHR.XDomainRequest();\n      } else {\n        xhr = new createXHR.XMLHttpRequest();\n      }\n    }\n\n    var key;\n    var aborted;\n    var uri = xhr.url = options.uri || options.url;\n    var method = xhr.method = options.method || \"GET\";\n    var body = options.body || options.data;\n    var headers = xhr.headers = options.headers || {};\n    var sync = !!options.sync;\n    var isJson = false;\n    var timeoutTimer;\n    var failureResponse = {\n      body: undefined,\n      headers: {},\n      statusCode: 0,\n      method: method,\n      url: uri,\n      rawRequest: xhr\n    };\n\n    if (\"json\" in options && options.json !== false) {\n      isJson = true;\n      headers[\"accept\"] || headers[\"Accept\"] || (headers[\"Accept\"] = \"application/json\"); //Don't override existing accept header declared by user\n\n      if (method !== \"GET\" && method !== \"HEAD\") {\n        headers[\"content-type\"] || headers[\"Content-Type\"] || (headers[\"Content-Type\"] = \"application/json\"); //Don't override existing accept header declared by user\n\n        body = JSON.stringify(options.json === true ? body : options.json);\n      }\n    }\n\n    xhr.onreadystatechange = readystatechange;\n    xhr.onload = loadFunc;\n    xhr.onerror = errorFunc; // IE9 must have onprogress be set to a unique function.\n\n    xhr.onprogress = function () {// IE must die\n    };\n\n    xhr.onabort = function () {\n      aborted = true;\n    };\n\n    xhr.ontimeout = errorFunc;\n    xhr.open(method, uri, !sync, options.username, options.password); //has to be after open\n\n    if (!sync) {\n      xhr.withCredentials = !!options.withCredentials;\n    } // Cannot set timeout with sync request\n    // not setting timeout on the xhr object, because of old webkits etc. not handling that correctly\n    // both npm's request and jquery 1.x use this kind of timeout, so this is being consistent\n\n\n    if (!sync && options.timeout > 0) {\n      timeoutTimer = setTimeout(function () {\n        if (aborted) return;\n        aborted = true; //IE9 may still call readystatechange\n\n        xhr.abort(\"timeout\");\n        var e = new Error(\"XMLHttpRequest timeout\");\n        e.code = \"ETIMEDOUT\";\n        errorFunc(e);\n      }, options.timeout);\n    }\n\n    if (xhr.setRequestHeader) {\n      for (key in headers) {\n        if (headers.hasOwnProperty(key)) {\n          xhr.setRequestHeader(key, headers[key]);\n        }\n      }\n    } else if (options.headers && !isEmpty(options.headers)) {\n      throw new Error(\"Headers cannot be set on an XDomainRequest object\");\n    }\n\n    if (\"responseType\" in options) {\n      xhr.responseType = options.responseType;\n    }\n\n    if (\"beforeSend\" in options && typeof options.beforeSend === \"function\") {\n      options.beforeSend(xhr);\n    } // Microsoft Edge browser sends \"undefined\" when send is called with undefined value.\n    // XMLHttpRequest spec says to pass null as body to indicate no body\n    // See https://github.com/naugtur/xhr/issues/100.\n\n\n    xhr.send(body || null);\n    return xhr;\n  }\n\n  function getXml(xhr) {\n    if (xhr.responseType === \"document\") {\n      return xhr.responseXML;\n    }\n\n    var firefoxBugTakenEffect = xhr.responseXML && xhr.responseXML.documentElement.nodeName === \"parsererror\";\n\n    if (xhr.responseType === \"\" && !firefoxBugTakenEffect) {\n      return xhr.responseXML;\n    }\n\n    return null;\n  }\n\n  function noop() {}\n\n  /**\n   * Takes a webvtt file contents and parses it into cues\n   *\n   * @param {string} srcContent\n   *        webVTT file contents\n   *\n   * @param {TextTrack} track\n   *        TextTrack to add cues to. Cues come from the srcContent.\n   *\n   * @private\n   */\n\n  var parseCues = function parseCues(srcContent, track) {\n    var parser = new window$1.WebVTT.Parser(window$1, window$1.vttjs, window$1.WebVTT.StringDecoder());\n    var errors = [];\n\n    parser.oncue = function (cue) {\n      track.addCue(cue);\n    };\n\n    parser.onparsingerror = function (error) {\n      errors.push(error);\n    };\n\n    parser.onflush = function () {\n      track.trigger({\n        type: 'loadeddata',\n        target: track\n      });\n    };\n\n    parser.parse(srcContent);\n\n    if (errors.length > 0) {\n      if (window$1.console && window$1.console.groupCollapsed) {\n        window$1.console.groupCollapsed(\"Text Track parsing errors for \" + track.src);\n      }\n\n      errors.forEach(function (error) {\n        return log.error(error);\n      });\n\n      if (window$1.console && window$1.console.groupEnd) {\n        window$1.console.groupEnd();\n      }\n    }\n\n    parser.flush();\n  };\n  /**\n   * Load a `TextTrack` from a specified url.\n   *\n   * @param {string} src\n   *        Url to load track from.\n   *\n   * @param {TextTrack} track\n   *        Track to add cues to. Comes from the content at the end of `url`.\n   *\n   * @private\n   */\n\n\n  var loadTrack = function loadTrack(src, track) {\n    var opts = {\n      uri: src\n    };\n    var crossOrigin = isCrossOrigin(src);\n\n    if (crossOrigin) {\n      opts.cors = crossOrigin;\n    }\n\n    xhr(opts, bind(this, function (err, response, responseBody) {\n      if (err) {\n        return log.error(err, response);\n      }\n\n      track.loaded_ = true; // Make sure that vttjs has loaded, otherwise, wait till it finished loading\n      // NOTE: this is only used for the alt/video.novtt.js build\n\n      if (typeof window$1.WebVTT !== 'function') {\n        if (track.tech_) {\n          var loadHandler = function loadHandler() {\n            return parseCues(responseBody, track);\n          };\n\n          track.tech_.on('vttjsloaded', loadHandler);\n          track.tech_.on('vttjserror', function () {\n            log.error(\"vttjs failed to load, stopping trying to process \" + track.src);\n            track.tech_.off('vttjsloaded', loadHandler);\n          });\n        }\n      } else {\n        parseCues(responseBody, track);\n      }\n    }));\n  };\n  /**\n   * A representation of a single `TextTrack`.\n   *\n   * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttrack}\n   * @extends Track\n   */\n\n\n  var TextTrack =\n  /*#__PURE__*/\n  function (_Track) {\n    _inheritsLoose(TextTrack, _Track);\n\n    /**\n     * Create an instance of this class.\n     *\n     * @param {Object} options={}\n     *        Object of option names and values\n     *\n     * @param {Tech} options.tech\n     *        A reference to the tech that owns this TextTrack.\n     *\n     * @param {TextTrack~Kind} [options.kind='subtitles']\n     *        A valid text track kind.\n     *\n     * @param {TextTrack~Mode} [options.mode='disabled']\n     *        A valid text track mode.\n     *\n     * @param {string} [options.id='vjs_track_' + Guid.newGUID()]\n     *        A unique id for this TextTrack.\n     *\n     * @param {string} [options.label='']\n     *        The menu label for this track.\n     *\n     * @param {string} [options.language='']\n     *        A valid two character language code.\n     *\n     * @param {string} [options.srclang='']\n     *        A valid two character language code. An alternative, but deprioritized\n     *        version of `options.language`\n     *\n     * @param {string} [options.src]\n     *        A url to TextTrack cues.\n     *\n     * @param {boolean} [options.default]\n     *        If this track should default to on or off.\n     */\n    function TextTrack(options) {\n      var _this;\n\n      if (options === void 0) {\n        options = {};\n      }\n\n      if (!options.tech) {\n        throw new Error('A tech was not provided.');\n      }\n\n      var settings = mergeOptions(options, {\n        kind: TextTrackKind[options.kind] || 'subtitles',\n        language: options.language || options.srclang || ''\n      });\n      var mode = TextTrackMode[settings.mode] || 'disabled';\n      var default_ = settings.default;\n\n      if (settings.kind === 'metadata' || settings.kind === 'chapters') {\n        mode = 'hidden';\n      }\n\n      _this = _Track.call(this, settings) || this;\n      _this.tech_ = settings.tech;\n      _this.cues_ = [];\n      _this.activeCues_ = [];\n      var cues = new TextTrackCueList(_this.cues_);\n      var activeCues = new TextTrackCueList(_this.activeCues_);\n      var changed = false;\n      var timeupdateHandler = bind(_assertThisInitialized(_assertThisInitialized(_this)), function () {\n        // Accessing this.activeCues for the side-effects of updating itself\n        // due to it's nature as a getter function. Do not remove or cues will\n        // stop updating!\n        // Use the setter to prevent deletion from uglify (pure_getters rule)\n        this.activeCues = this.activeCues;\n\n        if (changed) {\n          this.trigger('cuechange');\n          changed = false;\n        }\n      });\n\n      if (mode !== 'disabled') {\n        _this.tech_.ready(function () {\n          _this.tech_.on('timeupdate', timeupdateHandler);\n        }, true);\n      }\n\n      Object.defineProperties(_assertThisInitialized(_assertThisInitialized(_this)), {\n        /**\n         * @memberof TextTrack\n         * @member {boolean} default\n         *         If this track was set to be on or off by default. Cannot be changed after\n         *         creation.\n         * @instance\n         *\n         * @readonly\n         */\n        default: {\n          get: function get() {\n            return default_;\n          },\n          set: function set() {}\n        },\n\n        /**\n         * @memberof TextTrack\n         * @member {string} mode\n         *         Set the mode of this TextTrack to a valid {@link TextTrack~Mode}. Will\n         *         not be set if setting to an invalid mode.\n         * @instance\n         *\n         * @fires TextTrack#modechange\n         */\n        mode: {\n          get: function get() {\n            return mode;\n          },\n          set: function set(newMode) {\n            var _this2 = this;\n\n            if (!TextTrackMode[newMode]) {\n              return;\n            }\n\n            mode = newMode;\n\n            if (mode !== 'disabled') {\n              this.tech_.ready(function () {\n                _this2.tech_.on('timeupdate', timeupdateHandler);\n              }, true);\n            } else {\n              this.tech_.off('timeupdate', timeupdateHandler);\n            }\n            /**\n             * An event that fires when mode changes on this track. This allows\n             * the TextTrackList that holds this track to act accordingly.\n             *\n             * > Note: This is not part of the spec!\n             *\n             * @event TextTrack#modechange\n             * @type {EventTarget~Event}\n             */\n\n\n            this.trigger('modechange');\n          }\n        },\n\n        /**\n         * @memberof TextTrack\n         * @member {TextTrackCueList} cues\n         *         The text track cue list for this TextTrack.\n         * @instance\n         */\n        cues: {\n          get: function get() {\n            if (!this.loaded_) {\n              return null;\n            }\n\n            return cues;\n          },\n          set: function set() {}\n        },\n\n        /**\n         * @memberof TextTrack\n         * @member {TextTrackCueList} activeCues\n         *         The list text track cues that are currently active for this TextTrack.\n         * @instance\n         */\n        activeCues: {\n          get: function get() {\n            if (!this.loaded_) {\n              return null;\n            } // nothing to do\n\n\n            if (this.cues.length === 0) {\n              return activeCues;\n            }\n\n            var ct = this.tech_.currentTime();\n            var active = [];\n\n            for (var i = 0, l = this.cues.length; i < l; i++) {\n              var cue = this.cues[i];\n\n              if (cue.startTime <= ct && cue.endTime >= ct) {\n                active.push(cue);\n              } else if (cue.startTime === cue.endTime && cue.startTime <= ct && cue.startTime + 0.5 >= ct) {\n                active.push(cue);\n              }\n            }\n\n            changed = false;\n\n            if (active.length !== this.activeCues_.length) {\n              changed = true;\n            } else {\n              for (var _i = 0; _i < active.length; _i++) {\n                if (this.activeCues_.indexOf(active[_i]) === -1) {\n                  changed = true;\n                }\n              }\n            }\n\n            this.activeCues_ = active;\n            activeCues.setCues_(this.activeCues_);\n            return activeCues;\n          },\n          // /!\\ Keep this setter empty (see the timeupdate handler above)\n          set: function set() {}\n        }\n      });\n\n      if (settings.src) {\n        _this.src = settings.src;\n        loadTrack(settings.src, _assertThisInitialized(_assertThisInitialized(_this)));\n      } else {\n        _this.loaded_ = true;\n      }\n\n      return _this;\n    }\n    /**\n     * Add a cue to the internal list of cues.\n     *\n     * @param {TextTrack~Cue} cue\n     *        The cue to add to our internal list\n     */\n\n\n    var _proto = TextTrack.prototype;\n\n    _proto.addCue = function addCue(originalCue) {\n      var cue = originalCue;\n\n      if (window$1.vttjs && !(originalCue instanceof window$1.vttjs.VTTCue)) {\n        cue = new window$1.vttjs.VTTCue(originalCue.startTime, originalCue.endTime, originalCue.text);\n\n        for (var prop in originalCue) {\n          if (!(prop in cue)) {\n            cue[prop] = originalCue[prop];\n          }\n        } // make sure that `id` is copied over\n\n\n        cue.id = originalCue.id;\n        cue.originalCue_ = originalCue;\n      }\n\n      var tracks = this.tech_.textTracks();\n\n      for (var i = 0; i < tracks.length; i++) {\n        if (tracks[i] !== this) {\n          tracks[i].removeCue(cue);\n        }\n      }\n\n      this.cues_.push(cue);\n      this.cues.setCues_(this.cues_);\n    }\n    /**\n     * Remove a cue from our internal list\n     *\n     * @param {TextTrack~Cue} removeCue\n     *        The cue to remove from our internal list\n     */\n    ;\n\n    _proto.removeCue = function removeCue(_removeCue) {\n      var i = this.cues_.length;\n\n      while (i--) {\n        var cue = this.cues_[i];\n\n        if (cue === _removeCue || cue.originalCue_ && cue.originalCue_ === _removeCue) {\n          this.cues_.splice(i, 1);\n          this.cues.setCues_(this.cues_);\n          break;\n        }\n      }\n    };\n\n    return TextTrack;\n  }(Track);\n  /**\n   * cuechange - One or more cues in the track have become active or stopped being active.\n   */\n\n\n  TextTrack.prototype.allowedEvents_ = {\n    cuechange: 'cuechange'\n  };\n\n  /**\n   * A representation of a single `AudioTrack`. If it is part of an {@link AudioTrackList}\n   * only one `AudioTrack` in the list will be enabled at a time.\n   *\n   * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#audiotrack}\n   * @extends Track\n   */\n\n  var AudioTrack =\n  /*#__PURE__*/\n  function (_Track) {\n    _inheritsLoose(AudioTrack, _Track);\n\n    /**\n     * Create an instance of this class.\n     *\n     * @param {Object} [options={}]\n     *        Object of option names and values\n     *\n     * @param {AudioTrack~Kind} [options.kind='']\n     *        A valid audio track kind\n     *\n     * @param {string} [options.id='vjs_track_' + Guid.newGUID()]\n     *        A unique id for this AudioTrack.\n     *\n     * @param {string} [options.label='']\n     *        The menu label for this track.\n     *\n     * @param {string} [options.language='']\n     *        A valid two character language code.\n     *\n     * @param {boolean} [options.enabled]\n     *        If this track is the one that is currently playing. If this track is part of\n     *        an {@link AudioTrackList}, only one {@link AudioTrack} will be enabled.\n     */\n    function AudioTrack(options) {\n      var _this;\n\n      if (options === void 0) {\n        options = {};\n      }\n\n      var settings = mergeOptions(options, {\n        kind: AudioTrackKind[options.kind] || ''\n      });\n      _this = _Track.call(this, settings) || this;\n      var enabled = false;\n      /**\n       * @memberof AudioTrack\n       * @member {boolean} enabled\n       *         If this `AudioTrack` is enabled or not. When setting this will\n       *         fire {@link AudioTrack#enabledchange} if the state of enabled is changed.\n       * @instance\n       *\n       * @fires VideoTrack#selectedchange\n       */\n\n      Object.defineProperty(_assertThisInitialized(_assertThisInitialized(_this)), 'enabled', {\n        get: function get() {\n          return enabled;\n        },\n        set: function set(newEnabled) {\n          // an invalid or unchanged value\n          if (typeof newEnabled !== 'boolean' || newEnabled === enabled) {\n            return;\n          }\n\n          enabled = newEnabled;\n          /**\n           * An event that fires when enabled changes on this track. This allows\n           * the AudioTrackList that holds this track to act accordingly.\n           *\n           * > Note: This is not part of the spec! Native tracks will do\n           *         this internally without an event.\n           *\n           * @event AudioTrack#enabledchange\n           * @type {EventTarget~Event}\n           */\n\n          this.trigger('enabledchange');\n        }\n      }); // if the user sets this track to selected then\n      // set selected to that true value otherwise\n      // we keep it false\n\n      if (settings.enabled) {\n        _this.enabled = settings.enabled;\n      }\n\n      _this.loaded_ = true;\n      return _this;\n    }\n\n    return AudioTrack;\n  }(Track);\n\n  /**\n   * A representation of a single `VideoTrack`.\n   *\n   * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#videotrack}\n   * @extends Track\n   */\n\n  var VideoTrack =\n  /*#__PURE__*/\n  function (_Track) {\n    _inheritsLoose(VideoTrack, _Track);\n\n    /**\n     * Create an instance of this class.\n     *\n     * @param {Object} [options={}]\n     *        Object of option names and values\n     *\n     * @param {string} [options.kind='']\n     *        A valid {@link VideoTrack~Kind}\n     *\n     * @param {string} [options.id='vjs_track_' + Guid.newGUID()]\n     *        A unique id for this AudioTrack.\n     *\n     * @param {string} [options.label='']\n     *        The menu label for this track.\n     *\n     * @param {string} [options.language='']\n     *        A valid two character language code.\n     *\n     * @param {boolean} [options.selected]\n     *        If this track is the one that is currently playing.\n     */\n    function VideoTrack(options) {\n      var _this;\n\n      if (options === void 0) {\n        options = {};\n      }\n\n      var settings = mergeOptions(options, {\n        kind: VideoTrackKind[options.kind] || ''\n      });\n      _this = _Track.call(this, settings) || this;\n      var selected = false;\n      /**\n       * @memberof VideoTrack\n       * @member {boolean} selected\n       *         If this `VideoTrack` is selected or not. When setting this will\n       *         fire {@link VideoTrack#selectedchange} if the state of selected changed.\n       * @instance\n       *\n       * @fires VideoTrack#selectedchange\n       */\n\n      Object.defineProperty(_assertThisInitialized(_assertThisInitialized(_this)), 'selected', {\n        get: function get() {\n          return selected;\n        },\n        set: function set(newSelected) {\n          // an invalid or unchanged value\n          if (typeof newSelected !== 'boolean' || newSelected === selected) {\n            return;\n          }\n\n          selected = newSelected;\n          /**\n           * An event that fires when selected changes on this track. This allows\n           * the VideoTrackList that holds this track to act accordingly.\n           *\n           * > Note: This is not part of the spec! Native tracks will do\n           *         this internally without an event.\n           *\n           * @event VideoTrack#selectedchange\n           * @type {EventTarget~Event}\n           */\n\n          this.trigger('selectedchange');\n        }\n      }); // if the user sets this track to selected then\n      // set selected to that true value otherwise\n      // we keep it false\n\n      if (settings.selected) {\n        _this.selected = settings.selected;\n      }\n\n      return _this;\n    }\n\n    return VideoTrack;\n  }(Track);\n\n  /**\n   * @memberof HTMLTrackElement\n   * @typedef {HTMLTrackElement~ReadyState}\n   * @enum {number}\n   */\n\n  var NONE = 0;\n  var LOADING = 1;\n  var LOADED = 2;\n  var ERROR = 3;\n  /**\n   * A single track represented in the DOM.\n   *\n   * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#htmltrackelement}\n   * @extends EventTarget\n   */\n\n  var HTMLTrackElement =\n  /*#__PURE__*/\n  function (_EventTarget) {\n    _inheritsLoose(HTMLTrackElement, _EventTarget);\n\n    /**\n     * Create an instance of this class.\n     *\n     * @param {Object} options={}\n     *        Object of option names and values\n     *\n     * @param {Tech} options.tech\n     *        A reference to the tech that owns this HTMLTrackElement.\n     *\n     * @param {TextTrack~Kind} [options.kind='subtitles']\n     *        A valid text track kind.\n     *\n     * @param {TextTrack~Mode} [options.mode='disabled']\n     *        A valid text track mode.\n     *\n     * @param {string} [options.id='vjs_track_' + Guid.newGUID()]\n     *        A unique id for this TextTrack.\n     *\n     * @param {string} [options.label='']\n     *        The menu label for this track.\n     *\n     * @param {string} [options.language='']\n     *        A valid two character language code.\n     *\n     * @param {string} [options.srclang='']\n     *        A valid two character language code. An alternative, but deprioritized\n     *        vesion of `options.language`\n     *\n     * @param {string} [options.src]\n     *        A url to TextTrack cues.\n     *\n     * @param {boolean} [options.default]\n     *        If this track should default to on or off.\n     */\n    function HTMLTrackElement(options) {\n      var _this;\n\n      if (options === void 0) {\n        options = {};\n      }\n\n      _this = _EventTarget.call(this) || this;\n      var readyState;\n      var track = new TextTrack(options);\n      _this.kind = track.kind;\n      _this.src = track.src;\n      _this.srclang = track.language;\n      _this.label = track.label;\n      _this.default = track.default;\n      Object.defineProperties(_assertThisInitialized(_assertThisInitialized(_this)), {\n        /**\n         * @memberof HTMLTrackElement\n         * @member {HTMLTrackElement~ReadyState} readyState\n         *         The current ready state of the track element.\n         * @instance\n         */\n        readyState: {\n          get: function get() {\n            return readyState;\n          }\n        },\n\n        /**\n         * @memberof HTMLTrackElement\n         * @member {TextTrack} track\n         *         The underlying TextTrack object.\n         * @instance\n         *\n         */\n        track: {\n          get: function get() {\n            return track;\n          }\n        }\n      });\n      readyState = NONE;\n      /**\n       * @listens TextTrack#loadeddata\n       * @fires HTMLTrackElement#load\n       */\n\n      track.addEventListener('loadeddata', function () {\n        readyState = LOADED;\n\n        _this.trigger({\n          type: 'load',\n          target: _assertThisInitialized(_assertThisInitialized(_this))\n        });\n      });\n      return _this;\n    }\n\n    return HTMLTrackElement;\n  }(EventTarget);\n\n  HTMLTrackElement.prototype.allowedEvents_ = {\n    load: 'load'\n  };\n  HTMLTrackElement.NONE = NONE;\n  HTMLTrackElement.LOADING = LOADING;\n  HTMLTrackElement.LOADED = LOADED;\n  HTMLTrackElement.ERROR = ERROR;\n\n  /*\n   * This file contains all track properties that are used in\n   * player.js, tech.js, html5.js and possibly other techs in the future.\n   */\n\n  var NORMAL = {\n    audio: {\n      ListClass: AudioTrackList,\n      TrackClass: AudioTrack,\n      capitalName: 'Audio'\n    },\n    video: {\n      ListClass: VideoTrackList,\n      TrackClass: VideoTrack,\n      capitalName: 'Video'\n    },\n    text: {\n      ListClass: TextTrackList,\n      TrackClass: TextTrack,\n      capitalName: 'Text'\n    }\n  };\n  Object.keys(NORMAL).forEach(function (type) {\n    NORMAL[type].getterName = type + \"Tracks\";\n    NORMAL[type].privateName = type + \"Tracks_\";\n  });\n  var REMOTE = {\n    remoteText: {\n      ListClass: TextTrackList,\n      TrackClass: TextTrack,\n      capitalName: 'RemoteText',\n      getterName: 'remoteTextTracks',\n      privateName: 'remoteTextTracks_'\n    },\n    remoteTextEl: {\n      ListClass: HtmlTrackElementList,\n      TrackClass: HTMLTrackElement,\n      capitalName: 'RemoteTextTrackEls',\n      getterName: 'remoteTextTrackEls',\n      privateName: 'remoteTextTrackEls_'\n    }\n  };\n  var ALL = mergeOptions(NORMAL, REMOTE);\n  REMOTE.names = Object.keys(REMOTE);\n  NORMAL.names = Object.keys(NORMAL);\n  ALL.names = [].concat(REMOTE.names).concat(NORMAL.names);\n\n  /**\n   * Copyright 2013 vtt.js Contributors\n   *\n   * Licensed under the Apache License, Version 2.0 (the \"License\");\n   * you may not use this file except in compliance with the License.\n   * You may obtain a copy of the License at\n   *\n   *   http://www.apache.org/licenses/LICENSE-2.0\n   *\n   * Unless required by applicable law or agreed to in writing, software\n   * distributed under the License is distributed on an \"AS IS\" BASIS,\n   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n   * See the License for the specific language governing permissions and\n   * limitations under the License.\n   */\n\n  /* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */\n\n  /* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */\n  var _objCreate = Object.create || function () {\n    function F() {}\n\n    return function (o) {\n      if (arguments.length !== 1) {\n        throw new Error('Object.create shim only accepts one parameter.');\n      }\n\n      F.prototype = o;\n      return new F();\n    };\n  }(); // Creates a new ParserError object from an errorData object. The errorData\n  // object should have default code and message properties. The default message\n  // property can be overriden by passing in a message parameter.\n  // See ParsingError.Errors below for acceptable errors.\n\n\n  function ParsingError(errorData, message) {\n    this.name = \"ParsingError\";\n    this.code = errorData.code;\n    this.message = message || errorData.message;\n  }\n\n  ParsingError.prototype = _objCreate(Error.prototype);\n  ParsingError.prototype.constructor = ParsingError; // ParsingError metadata for acceptable ParsingErrors.\n\n  ParsingError.Errors = {\n    BadSignature: {\n      code: 0,\n      message: \"Malformed WebVTT signature.\"\n    },\n    BadTimeStamp: {\n      code: 1,\n      message: \"Malformed time stamp.\"\n    }\n  }; // Try to parse input as a time stamp.\n\n  function parseTimeStamp(input) {\n    function computeSeconds(h, m, s, f) {\n      return (h | 0) * 3600 + (m | 0) * 60 + (s | 0) + (f | 0) / 1000;\n    }\n\n    var m = input.match(/^(\\d+):(\\d{2})(:\\d{2})?\\.(\\d{3})/);\n\n    if (!m) {\n      return null;\n    }\n\n    if (m[3]) {\n      // Timestamp takes the form of [hours]:[minutes]:[seconds].[milliseconds]\n      return computeSeconds(m[1], m[2], m[3].replace(\":\", \"\"), m[4]);\n    } else if (m[1] > 59) {\n      // Timestamp takes the form of [hours]:[minutes].[milliseconds]\n      // First position is hours as it's over 59.\n      return computeSeconds(m[1], m[2], 0, m[4]);\n    } else {\n      // Timestamp takes the form of [minutes]:[seconds].[milliseconds]\n      return computeSeconds(0, m[1], m[2], m[4]);\n    }\n  } // A settings object holds key/value pairs and will ignore anything but the first\n  // assignment to a specific key.\n\n\n  function Settings() {\n    this.values = _objCreate(null);\n  }\n\n  Settings.prototype = {\n    // Only accept the first assignment to any key.\n    set: function set(k, v) {\n      if (!this.get(k) && v !== \"\") {\n        this.values[k] = v;\n      }\n    },\n    // Return the value for a key, or a default value.\n    // If 'defaultKey' is passed then 'dflt' is assumed to be an object with\n    // a number of possible default values as properties where 'defaultKey' is\n    // the key of the property that will be chosen; otherwise it's assumed to be\n    // a single value.\n    get: function get(k, dflt, defaultKey) {\n      if (defaultKey) {\n        return this.has(k) ? this.values[k] : dflt[defaultKey];\n      }\n\n      return this.has(k) ? this.values[k] : dflt;\n    },\n    // Check whether we have a value for a key.\n    has: function has(k) {\n      return k in this.values;\n    },\n    // Accept a setting if its one of the given alternatives.\n    alt: function alt(k, v, a) {\n      for (var n = 0; n < a.length; ++n) {\n        if (v === a[n]) {\n          this.set(k, v);\n          break;\n        }\n      }\n    },\n    // Accept a setting if its a valid (signed) integer.\n    integer: function integer(k, v) {\n      if (/^-?\\d+$/.test(v)) {\n        // integer\n        this.set(k, parseInt(v, 10));\n      }\n    },\n    // Accept a setting if its a valid percentage.\n    percent: function percent(k, v) {\n      var m;\n\n      if (m = v.match(/^([\\d]{1,3})(\\.[\\d]*)?%$/)) {\n        v = parseFloat(v);\n\n        if (v >= 0 && v <= 100) {\n          this.set(k, v);\n          return true;\n        }\n      }\n\n      return false;\n    }\n  }; // Helper function to parse input into groups separated by 'groupDelim', and\n  // interprete each group as a key/value pair separated by 'keyValueDelim'.\n\n  function parseOptions(input, callback, keyValueDelim, groupDelim) {\n    var groups = groupDelim ? input.split(groupDelim) : [input];\n\n    for (var i in groups) {\n      if (typeof groups[i] !== \"string\") {\n        continue;\n      }\n\n      var kv = groups[i].split(keyValueDelim);\n\n      if (kv.length !== 2) {\n        continue;\n      }\n\n      var k = kv[0];\n      var v = kv[1];\n      callback(k, v);\n    }\n  }\n\n  function parseCue(input, cue, regionList) {\n    // Remember the original input if we need to throw an error.\n    var oInput = input; // 4.1 WebVTT timestamp\n\n    function consumeTimeStamp() {\n      var ts = parseTimeStamp(input);\n\n      if (ts === null) {\n        throw new ParsingError(ParsingError.Errors.BadTimeStamp, \"Malformed timestamp: \" + oInput);\n      } // Remove time stamp from input.\n\n\n      input = input.replace(/^[^\\sa-zA-Z-]+/, \"\");\n      return ts;\n    } // 4.4.2 WebVTT cue settings\n\n\n    function consumeCueSettings(input, cue) {\n      var settings = new Settings();\n      parseOptions(input, function (k, v) {\n        switch (k) {\n          case \"region\":\n            // Find the last region we parsed with the same region id.\n            for (var i = regionList.length - 1; i >= 0; i--) {\n              if (regionList[i].id === v) {\n                settings.set(k, regionList[i].region);\n                break;\n              }\n            }\n\n            break;\n\n          case \"vertical\":\n            settings.alt(k, v, [\"rl\", \"lr\"]);\n            break;\n\n          case \"line\":\n            var vals = v.split(\",\"),\n                vals0 = vals[0];\n            settings.integer(k, vals0);\n            settings.percent(k, vals0) ? settings.set(\"snapToLines\", false) : null;\n            settings.alt(k, vals0, [\"auto\"]);\n\n            if (vals.length === 2) {\n              settings.alt(\"lineAlign\", vals[1], [\"start\", \"middle\", \"end\"]);\n            }\n\n            break;\n\n          case \"position\":\n            vals = v.split(\",\");\n            settings.percent(k, vals[0]);\n\n            if (vals.length === 2) {\n              settings.alt(\"positionAlign\", vals[1], [\"start\", \"middle\", \"end\"]);\n            }\n\n            break;\n\n          case \"size\":\n            settings.percent(k, v);\n            break;\n\n          case \"align\":\n            settings.alt(k, v, [\"start\", \"middle\", \"end\", \"left\", \"right\"]);\n            break;\n        }\n      }, /:/, /\\s/); // Apply default values for any missing fields.\n\n      cue.region = settings.get(\"region\", null);\n      cue.vertical = settings.get(\"vertical\", \"\");\n      cue.line = settings.get(\"line\", \"auto\");\n      cue.lineAlign = settings.get(\"lineAlign\", \"start\");\n      cue.snapToLines = settings.get(\"snapToLines\", true);\n      cue.size = settings.get(\"size\", 100);\n      cue.align = settings.get(\"align\", \"middle\");\n      cue.position = settings.get(\"position\", {\n        start: 0,\n        left: 0,\n        middle: 50,\n        end: 100,\n        right: 100\n      }, cue.align);\n      cue.positionAlign = settings.get(\"positionAlign\", {\n        start: \"start\",\n        left: \"start\",\n        middle: \"middle\",\n        end: \"end\",\n        right: \"end\"\n      }, cue.align);\n    }\n\n    function skipWhitespace() {\n      input = input.replace(/^\\s+/, \"\");\n    } // 4.1 WebVTT cue timings.\n\n\n    skipWhitespace();\n    cue.startTime = consumeTimeStamp(); // (1) collect cue start time\n\n    skipWhitespace();\n\n    if (input.substr(0, 3) !== \"-->\") {\n      // (3) next characters must match \"-->\"\n      throw new ParsingError(ParsingError.Errors.BadTimeStamp, \"Malformed time stamp (time stamps must be separated by '-->'): \" + oInput);\n    }\n\n    input = input.substr(3);\n    skipWhitespace();\n    cue.endTime = consumeTimeStamp(); // (5) collect cue end time\n    // 4.1 WebVTT cue settings list.\n\n    skipWhitespace();\n    consumeCueSettings(input, cue);\n  }\n\n  var ESCAPE = {\n    \"&amp;\": \"&\",\n    \"&lt;\": \"<\",\n    \"&gt;\": \">\",\n    \"&lrm;\": \"\\u200E\",\n    \"&rlm;\": \"\\u200F\",\n    \"&nbsp;\": \"\\xA0\"\n  };\n  var TAG_NAME = {\n    c: \"span\",\n    i: \"i\",\n    b: \"b\",\n    u: \"u\",\n    ruby: \"ruby\",\n    rt: \"rt\",\n    v: \"span\",\n    lang: \"span\"\n  };\n  var TAG_ANNOTATION = {\n    v: \"title\",\n    lang: \"lang\"\n  };\n  var NEEDS_PARENT = {\n    rt: \"ruby\"\n  }; // Parse content into a document fragment.\n\n  function parseContent(window, input) {\n    function nextToken() {\n      // Check for end-of-string.\n      if (!input) {\n        return null;\n      } // Consume 'n' characters from the input.\n\n\n      function consume(result) {\n        input = input.substr(result.length);\n        return result;\n      }\n\n      var m = input.match(/^([^<]*)(<[^>]*>?)?/); // If there is some text before the next tag, return it, otherwise return\n      // the tag.\n\n      return consume(m[1] ? m[1] : m[2]);\n    } // Unescape a string 's'.\n\n\n    function unescape1(e) {\n      return ESCAPE[e];\n    }\n\n    function unescape(s) {\n      while (m = s.match(/&(amp|lt|gt|lrm|rlm|nbsp);/)) {\n        s = s.replace(m[0], unescape1);\n      }\n\n      return s;\n    }\n\n    function shouldAdd(current, element) {\n      return !NEEDS_PARENT[element.localName] || NEEDS_PARENT[element.localName] === current.localName;\n    } // Create an element for this tag.\n\n\n    function createElement(type, annotation) {\n      var tagName = TAG_NAME[type];\n\n      if (!tagName) {\n        return null;\n      }\n\n      var element = window.document.createElement(tagName);\n      element.localName = tagName;\n      var name = TAG_ANNOTATION[type];\n\n      if (name && annotation) {\n        element[name] = annotation.trim();\n      }\n\n      return element;\n    }\n\n    var rootDiv = window.document.createElement(\"div\"),\n        current = rootDiv,\n        t,\n        tagStack = [];\n\n    while ((t = nextToken()) !== null) {\n      if (t[0] === '<') {\n        if (t[1] === \"/\") {\n          // If the closing tag matches, move back up to the parent node.\n          if (tagStack.length && tagStack[tagStack.length - 1] === t.substr(2).replace(\">\", \"\")) {\n            tagStack.pop();\n            current = current.parentNode;\n          } // Otherwise just ignore the end tag.\n\n\n          continue;\n        }\n\n        var ts = parseTimeStamp(t.substr(1, t.length - 2));\n        var node;\n\n        if (ts) {\n          // Timestamps are lead nodes as well.\n          node = window.document.createProcessingInstruction(\"timestamp\", ts);\n          current.appendChild(node);\n          continue;\n        }\n\n        var m = t.match(/^<([^.\\s/0-9>]+)(\\.[^\\s\\\\>]+)?([^>\\\\]+)?(\\\\?)>?$/); // If we can't parse the tag, skip to the next tag.\n\n        if (!m) {\n          continue;\n        } // Try to construct an element, and ignore the tag if we couldn't.\n\n\n        node = createElement(m[1], m[3]);\n\n        if (!node) {\n          continue;\n        } // Determine if the tag should be added based on the context of where it\n        // is placed in the cuetext.\n\n\n        if (!shouldAdd(current, node)) {\n          continue;\n        } // Set the class list (as a list of classes, separated by space).\n\n\n        if (m[2]) {\n          node.className = m[2].substr(1).replace('.', ' ');\n        } // Append the node to the current node, and enter the scope of the new\n        // node.\n\n\n        tagStack.push(m[1]);\n        current.appendChild(node);\n        current = node;\n        continue;\n      } // Text nodes are leaf nodes.\n\n\n      current.appendChild(window.document.createTextNode(unescape(t)));\n    }\n\n    return rootDiv;\n  } // This is a list of all the Unicode characters that have a strong\n  // right-to-left category. What this means is that these characters are\n  // written right-to-left for sure. It was generated by pulling all the strong\n  // right-to-left characters out of the Unicode data table. That table can\n  // found at: http://www.unicode.org/Public/UNIDATA/UnicodeData.txt\n\n\n  var strongRTLRanges = [[0x5be, 0x5be], [0x5c0, 0x5c0], [0x5c3, 0x5c3], [0x5c6, 0x5c6], [0x5d0, 0x5ea], [0x5f0, 0x5f4], [0x608, 0x608], [0x60b, 0x60b], [0x60d, 0x60d], [0x61b, 0x61b], [0x61e, 0x64a], [0x66d, 0x66f], [0x671, 0x6d5], [0x6e5, 0x6e6], [0x6ee, 0x6ef], [0x6fa, 0x70d], [0x70f, 0x710], [0x712, 0x72f], [0x74d, 0x7a5], [0x7b1, 0x7b1], [0x7c0, 0x7ea], [0x7f4, 0x7f5], [0x7fa, 0x7fa], [0x800, 0x815], [0x81a, 0x81a], [0x824, 0x824], [0x828, 0x828], [0x830, 0x83e], [0x840, 0x858], [0x85e, 0x85e], [0x8a0, 0x8a0], [0x8a2, 0x8ac], [0x200f, 0x200f], [0xfb1d, 0xfb1d], [0xfb1f, 0xfb28], [0xfb2a, 0xfb36], [0xfb38, 0xfb3c], [0xfb3e, 0xfb3e], [0xfb40, 0xfb41], [0xfb43, 0xfb44], [0xfb46, 0xfbc1], [0xfbd3, 0xfd3d], [0xfd50, 0xfd8f], [0xfd92, 0xfdc7], [0xfdf0, 0xfdfc], [0xfe70, 0xfe74], [0xfe76, 0xfefc], [0x10800, 0x10805], [0x10808, 0x10808], [0x1080a, 0x10835], [0x10837, 0x10838], [0x1083c, 0x1083c], [0x1083f, 0x10855], [0x10857, 0x1085f], [0x10900, 0x1091b], [0x10920, 0x10939], [0x1093f, 0x1093f], [0x10980, 0x109b7], [0x109be, 0x109bf], [0x10a00, 0x10a00], [0x10a10, 0x10a13], [0x10a15, 0x10a17], [0x10a19, 0x10a33], [0x10a40, 0x10a47], [0x10a50, 0x10a58], [0x10a60, 0x10a7f], [0x10b00, 0x10b35], [0x10b40, 0x10b55], [0x10b58, 0x10b72], [0x10b78, 0x10b7f], [0x10c00, 0x10c48], [0x1ee00, 0x1ee03], [0x1ee05, 0x1ee1f], [0x1ee21, 0x1ee22], [0x1ee24, 0x1ee24], [0x1ee27, 0x1ee27], [0x1ee29, 0x1ee32], [0x1ee34, 0x1ee37], [0x1ee39, 0x1ee39], [0x1ee3b, 0x1ee3b], [0x1ee42, 0x1ee42], [0x1ee47, 0x1ee47], [0x1ee49, 0x1ee49], [0x1ee4b, 0x1ee4b], [0x1ee4d, 0x1ee4f], [0x1ee51, 0x1ee52], [0x1ee54, 0x1ee54], [0x1ee57, 0x1ee57], [0x1ee59, 0x1ee59], [0x1ee5b, 0x1ee5b], [0x1ee5d, 0x1ee5d], [0x1ee5f, 0x1ee5f], [0x1ee61, 0x1ee62], [0x1ee64, 0x1ee64], [0x1ee67, 0x1ee6a], [0x1ee6c, 0x1ee72], [0x1ee74, 0x1ee77], [0x1ee79, 0x1ee7c], [0x1ee7e, 0x1ee7e], [0x1ee80, 0x1ee89], [0x1ee8b, 0x1ee9b], [0x1eea1, 0x1eea3], [0x1eea5, 0x1eea9], [0x1eeab, 0x1eebb], [0x10fffd, 0x10fffd]];\n\n  function isStrongRTLChar(charCode) {\n    for (var i = 0; i < strongRTLRanges.length; i++) {\n      var currentRange = strongRTLRanges[i];\n\n      if (charCode >= currentRange[0] && charCode <= currentRange[1]) {\n        return true;\n      }\n    }\n\n    return false;\n  }\n\n  function determineBidi(cueDiv) {\n    var nodeStack = [],\n        text = \"\",\n        charCode;\n\n    if (!cueDiv || !cueDiv.childNodes) {\n      return \"ltr\";\n    }\n\n    function pushNodes(nodeStack, node) {\n      for (var i = node.childNodes.length - 1; i >= 0; i--) {\n        nodeStack.push(node.childNodes[i]);\n      }\n    }\n\n    function nextTextNode(nodeStack) {\n      if (!nodeStack || !nodeStack.length) {\n        return null;\n      }\n\n      var node = nodeStack.pop(),\n          text = node.textContent || node.innerText;\n\n      if (text) {\n        // TODO: This should match all unicode type B characters (paragraph\n        // separator characters). See issue #115.\n        var m = text.match(/^.*(\\n|\\r)/);\n\n        if (m) {\n          nodeStack.length = 0;\n          return m[0];\n        }\n\n        return text;\n      }\n\n      if (node.tagName === \"ruby\") {\n        return nextTextNode(nodeStack);\n      }\n\n      if (node.childNodes) {\n        pushNodes(nodeStack, node);\n        return nextTextNode(nodeStack);\n      }\n    }\n\n    pushNodes(nodeStack, cueDiv);\n\n    while (text = nextTextNode(nodeStack)) {\n      for (var i = 0; i < text.length; i++) {\n        charCode = text.charCodeAt(i);\n\n        if (isStrongRTLChar(charCode)) {\n          return \"rtl\";\n        }\n      }\n    }\n\n    return \"ltr\";\n  }\n\n  function computeLinePos(cue) {\n    if (typeof cue.line === \"number\" && (cue.snapToLines || cue.line >= 0 && cue.line <= 100)) {\n      return cue.line;\n    }\n\n    if (!cue.track || !cue.track.textTrackList || !cue.track.textTrackList.mediaElement) {\n      return -1;\n    }\n\n    var track = cue.track,\n        trackList = track.textTrackList,\n        count = 0;\n\n    for (var i = 0; i < trackList.length && trackList[i] !== track; i++) {\n      if (trackList[i].mode === \"showing\") {\n        count++;\n      }\n    }\n\n    return ++count * -1;\n  }\n\n  function StyleBox() {} // Apply styles to a div. If there is no div passed then it defaults to the\n  // div on 'this'.\n\n\n  StyleBox.prototype.applyStyles = function (styles, div) {\n    div = div || this.div;\n\n    for (var prop in styles) {\n      if (styles.hasOwnProperty(prop)) {\n        div.style[prop] = styles[prop];\n      }\n    }\n  };\n\n  StyleBox.prototype.formatStyle = function (val, unit) {\n    return val === 0 ? 0 : val + unit;\n  }; // Constructs the computed display state of the cue (a div). Places the div\n  // into the overlay which should be a block level element (usually a div).\n\n\n  function CueStyleBox(window, cue, styleOptions) {\n    StyleBox.call(this);\n    this.cue = cue; // Parse our cue's text into a DOM tree rooted at 'cueDiv'. This div will\n    // have inline positioning and will function as the cue background box.\n\n    this.cueDiv = parseContent(window, cue.text);\n    var styles = {\n      color: \"rgba(255, 255, 255, 1)\",\n      backgroundColor: \"rgba(0, 0, 0, 0.8)\",\n      position: \"relative\",\n      left: 0,\n      right: 0,\n      top: 0,\n      bottom: 0,\n      display: \"inline\",\n      writingMode: cue.vertical === \"\" ? \"horizontal-tb\" : cue.vertical === \"lr\" ? \"vertical-lr\" : \"vertical-rl\",\n      unicodeBidi: \"plaintext\"\n    };\n    this.applyStyles(styles, this.cueDiv); // Create an absolutely positioned div that will be used to position the cue\n    // div. Note, all WebVTT cue-setting alignments are equivalent to the CSS\n    // mirrors of them except \"middle\" which is \"center\" in CSS.\n\n    this.div = window.document.createElement(\"div\");\n    styles = {\n      direction: determineBidi(this.cueDiv),\n      writingMode: cue.vertical === \"\" ? \"horizontal-tb\" : cue.vertical === \"lr\" ? \"vertical-lr\" : \"vertical-rl\",\n      unicodeBidi: \"plaintext\",\n      textAlign: cue.align === \"middle\" ? \"center\" : cue.align,\n      font: styleOptions.font,\n      whiteSpace: \"pre-line\",\n      position: \"absolute\"\n    };\n    this.applyStyles(styles);\n    this.div.appendChild(this.cueDiv); // Calculate the distance from the reference edge of the viewport to the text\n    // position of the cue box. The reference edge will be resolved later when\n    // the box orientation styles are applied.\n\n    var textPos = 0;\n\n    switch (cue.positionAlign) {\n      case \"start\":\n        textPos = cue.position;\n        break;\n\n      case \"middle\":\n        textPos = cue.position - cue.size / 2;\n        break;\n\n      case \"end\":\n        textPos = cue.position - cue.size;\n        break;\n    } // Horizontal box orientation; textPos is the distance from the left edge of the\n    // area to the left edge of the box and cue.size is the distance extending to\n    // the right from there.\n\n\n    if (cue.vertical === \"\") {\n      this.applyStyles({\n        left: this.formatStyle(textPos, \"%\"),\n        width: this.formatStyle(cue.size, \"%\")\n      }); // Vertical box orientation; textPos is the distance from the top edge of the\n      // area to the top edge of the box and cue.size is the height extending\n      // downwards from there.\n    } else {\n      this.applyStyles({\n        top: this.formatStyle(textPos, \"%\"),\n        height: this.formatStyle(cue.size, \"%\")\n      });\n    }\n\n    this.move = function (box) {\n      this.applyStyles({\n        top: this.formatStyle(box.top, \"px\"),\n        bottom: this.formatStyle(box.bottom, \"px\"),\n        left: this.formatStyle(box.left, \"px\"),\n        right: this.formatStyle(box.right, \"px\"),\n        height: this.formatStyle(box.height, \"px\"),\n        width: this.formatStyle(box.width, \"px\")\n      });\n    };\n  }\n\n  CueStyleBox.prototype = _objCreate(StyleBox.prototype);\n  CueStyleBox.prototype.constructor = CueStyleBox; // Represents the co-ordinates of an Element in a way that we can easily\n  // compute things with such as if it overlaps or intersects with another Element.\n  // Can initialize it with either a StyleBox or another BoxPosition.\n\n  function BoxPosition(obj) {\n    // Either a BoxPosition was passed in and we need to copy it, or a StyleBox\n    // was passed in and we need to copy the results of 'getBoundingClientRect'\n    // as the object returned is readonly. All co-ordinate values are in reference\n    // to the viewport origin (top left).\n    var lh, height, width, top;\n\n    if (obj.div) {\n      height = obj.div.offsetHeight;\n      width = obj.div.offsetWidth;\n      top = obj.div.offsetTop;\n      var rects = (rects = obj.div.childNodes) && (rects = rects[0]) && rects.getClientRects && rects.getClientRects();\n      obj = obj.div.getBoundingClientRect(); // In certain cases the outter div will be slightly larger then the sum of\n      // the inner div's lines. This could be due to bold text, etc, on some platforms.\n      // In this case we should get the average line height and use that. This will\n      // result in the desired behaviour.\n\n      lh = rects ? Math.max(rects[0] && rects[0].height || 0, obj.height / rects.length) : 0;\n    }\n\n    this.left = obj.left;\n    this.right = obj.right;\n    this.top = obj.top || top;\n    this.height = obj.height || height;\n    this.bottom = obj.bottom || top + (obj.height || height);\n    this.width = obj.width || width;\n    this.lineHeight = lh !== undefined ? lh : obj.lineHeight;\n  } // Move the box along a particular axis. Optionally pass in an amount to move\n  // the box. If no amount is passed then the default is the line height of the\n  // box.\n\n\n  BoxPosition.prototype.move = function (axis, toMove) {\n    toMove = toMove !== undefined ? toMove : this.lineHeight;\n\n    switch (axis) {\n      case \"+x\":\n        this.left += toMove;\n        this.right += toMove;\n        break;\n\n      case \"-x\":\n        this.left -= toMove;\n        this.right -= toMove;\n        break;\n\n      case \"+y\":\n        this.top += toMove;\n        this.bottom += toMove;\n        break;\n\n      case \"-y\":\n        this.top -= toMove;\n        this.bottom -= toMove;\n        break;\n    }\n  }; // Check if this box overlaps another box, b2.\n\n\n  BoxPosition.prototype.overlaps = function (b2) {\n    return this.left < b2.right && this.right > b2.left && this.top < b2.bottom && this.bottom > b2.top;\n  }; // Check if this box overlaps any other boxes in boxes.\n\n\n  BoxPosition.prototype.overlapsAny = function (boxes) {\n    for (var i = 0; i < boxes.length; i++) {\n      if (this.overlaps(boxes[i])) {\n        return true;\n      }\n    }\n\n    return false;\n  }; // Check if this box is within another box.\n\n\n  BoxPosition.prototype.within = function (container) {\n    return this.top >= container.top && this.bottom <= container.bottom && this.left >= container.left && this.right <= container.right;\n  }; // Check if this box is entirely within the container or it is overlapping\n  // on the edge opposite of the axis direction passed. For example, if \"+x\" is\n  // passed and the box is overlapping on the left edge of the container, then\n  // return true.\n\n\n  BoxPosition.prototype.overlapsOppositeAxis = function (container, axis) {\n    switch (axis) {\n      case \"+x\":\n        return this.left < container.left;\n\n      case \"-x\":\n        return this.right > container.right;\n\n      case \"+y\":\n        return this.top < container.top;\n\n      case \"-y\":\n        return this.bottom > container.bottom;\n    }\n  }; // Find the percentage of the area that this box is overlapping with another\n  // box.\n\n\n  BoxPosition.prototype.intersectPercentage = function (b2) {\n    var x = Math.max(0, Math.min(this.right, b2.right) - Math.max(this.left, b2.left)),\n        y = Math.max(0, Math.min(this.bottom, b2.bottom) - Math.max(this.top, b2.top)),\n        intersectArea = x * y;\n    return intersectArea / (this.height * this.width);\n  }; // Convert the positions from this box to CSS compatible positions using\n  // the reference container's positions. This has to be done because this\n  // box's positions are in reference to the viewport origin, whereas, CSS\n  // values are in referecne to their respective edges.\n\n\n  BoxPosition.prototype.toCSSCompatValues = function (reference) {\n    return {\n      top: this.top - reference.top,\n      bottom: reference.bottom - this.bottom,\n      left: this.left - reference.left,\n      right: reference.right - this.right,\n      height: this.height,\n      width: this.width\n    };\n  }; // Get an object that represents the box's position without anything extra.\n  // Can pass a StyleBox, HTMLElement, or another BoxPositon.\n\n\n  BoxPosition.getSimpleBoxPosition = function (obj) {\n    var height = obj.div ? obj.div.offsetHeight : obj.tagName ? obj.offsetHeight : 0;\n    var width = obj.div ? obj.div.offsetWidth : obj.tagName ? obj.offsetWidth : 0;\n    var top = obj.div ? obj.div.offsetTop : obj.tagName ? obj.offsetTop : 0;\n    obj = obj.div ? obj.div.getBoundingClientRect() : obj.tagName ? obj.getBoundingClientRect() : obj;\n    var ret = {\n      left: obj.left,\n      right: obj.right,\n      top: obj.top || top,\n      height: obj.height || height,\n      bottom: obj.bottom || top + (obj.height || height),\n      width: obj.width || width\n    };\n    return ret;\n  }; // Move a StyleBox to its specified, or next best, position. The containerBox\n  // is the box that contains the StyleBox, such as a div. boxPositions are\n  // a list of other boxes that the styleBox can't overlap with.\n\n\n  function moveBoxToLinePosition(window, styleBox, containerBox, boxPositions) {\n    // Find the best position for a cue box, b, on the video. The axis parameter\n    // is a list of axis, the order of which, it will move the box along. For example:\n    // Passing [\"+x\", \"-x\"] will move the box first along the x axis in the positive\n    // direction. If it doesn't find a good position for it there it will then move\n    // it along the x axis in the negative direction.\n    function findBestPosition(b, axis) {\n      var bestPosition,\n          specifiedPosition = new BoxPosition(b),\n          percentage = 1; // Highest possible so the first thing we get is better.\n\n      for (var i = 0; i < axis.length; i++) {\n        while (b.overlapsOppositeAxis(containerBox, axis[i]) || b.within(containerBox) && b.overlapsAny(boxPositions)) {\n          b.move(axis[i]);\n        } // We found a spot where we aren't overlapping anything. This is our\n        // best position.\n\n\n        if (b.within(containerBox)) {\n          return b;\n        }\n\n        var p = b.intersectPercentage(containerBox); // If we're outside the container box less then we were on our last try\n        // then remember this position as the best position.\n\n        if (percentage > p) {\n          bestPosition = new BoxPosition(b);\n          percentage = p;\n        } // Reset the box position to the specified position.\n\n\n        b = new BoxPosition(specifiedPosition);\n      }\n\n      return bestPosition || specifiedPosition;\n    }\n\n    var boxPosition = new BoxPosition(styleBox),\n        cue = styleBox.cue,\n        linePos = computeLinePos(cue),\n        axis = []; // If we have a line number to align the cue to.\n\n    if (cue.snapToLines) {\n      var size;\n\n      switch (cue.vertical) {\n        case \"\":\n          axis = [\"+y\", \"-y\"];\n          size = \"height\";\n          break;\n\n        case \"rl\":\n          axis = [\"+x\", \"-x\"];\n          size = \"width\";\n          break;\n\n        case \"lr\":\n          axis = [\"-x\", \"+x\"];\n          size = \"width\";\n          break;\n      }\n\n      var step = boxPosition.lineHeight,\n          position = step * Math.round(linePos),\n          maxPosition = containerBox[size] + step,\n          initialAxis = axis[0]; // If the specified intial position is greater then the max position then\n      // clamp the box to the amount of steps it would take for the box to\n      // reach the max position.\n\n      if (Math.abs(position) > maxPosition) {\n        position = position < 0 ? -1 : 1;\n        position *= Math.ceil(maxPosition / step) * step;\n      } // If computed line position returns negative then line numbers are\n      // relative to the bottom of the video instead of the top. Therefore, we\n      // need to increase our initial position by the length or width of the\n      // video, depending on the writing direction, and reverse our axis directions.\n\n\n      if (linePos < 0) {\n        position += cue.vertical === \"\" ? containerBox.height : containerBox.width;\n        axis = axis.reverse();\n      } // Move the box to the specified position. This may not be its best\n      // position.\n\n\n      boxPosition.move(initialAxis, position);\n    } else {\n      // If we have a percentage line value for the cue.\n      var calculatedPercentage = boxPosition.lineHeight / containerBox.height * 100;\n\n      switch (cue.lineAlign) {\n        case \"middle\":\n          linePos -= calculatedPercentage / 2;\n          break;\n\n        case \"end\":\n          linePos -= calculatedPercentage;\n          break;\n      } // Apply initial line position to the cue box.\n\n\n      switch (cue.vertical) {\n        case \"\":\n          styleBox.applyStyles({\n            top: styleBox.formatStyle(linePos, \"%\")\n          });\n          break;\n\n        case \"rl\":\n          styleBox.applyStyles({\n            left: styleBox.formatStyle(linePos, \"%\")\n          });\n          break;\n\n        case \"lr\":\n          styleBox.applyStyles({\n            right: styleBox.formatStyle(linePos, \"%\")\n          });\n          break;\n      }\n\n      axis = [\"+y\", \"-x\", \"+x\", \"-y\"]; // Get the box position again after we've applied the specified positioning\n      // to it.\n\n      boxPosition = new BoxPosition(styleBox);\n    }\n\n    var bestPosition = findBestPosition(boxPosition, axis);\n    styleBox.move(bestPosition.toCSSCompatValues(containerBox));\n  }\n\n  function WebVTT$1() {} // Nothing\n  // Helper to allow strings to be decoded instead of the default binary utf8 data.\n\n\n  WebVTT$1.StringDecoder = function () {\n    return {\n      decode: function decode(data) {\n        if (!data) {\n          return \"\";\n        }\n\n        if (typeof data !== \"string\") {\n          throw new Error(\"Error - expected string data.\");\n        }\n\n        return decodeURIComponent(encodeURIComponent(data));\n      }\n    };\n  };\n\n  WebVTT$1.convertCueToDOMTree = function (window, cuetext) {\n    if (!window || !cuetext) {\n      return null;\n    }\n\n    return parseContent(window, cuetext);\n  };\n\n  var FONT_SIZE_PERCENT = 0.05;\n  var FONT_STYLE = \"sans-serif\";\n  var CUE_BACKGROUND_PADDING = \"1.5%\"; // Runs the processing model over the cues and regions passed to it.\n  // @param overlay A block level element (usually a div) that the computed cues\n  //                and regions will be placed into.\n\n  WebVTT$1.processCues = function (window, cues, overlay) {\n    if (!window || !cues || !overlay) {\n      return null;\n    } // Remove all previous children.\n\n\n    while (overlay.firstChild) {\n      overlay.removeChild(overlay.firstChild);\n    }\n\n    var paddedOverlay = window.document.createElement(\"div\");\n    paddedOverlay.style.position = \"absolute\";\n    paddedOverlay.style.left = \"0\";\n    paddedOverlay.style.right = \"0\";\n    paddedOverlay.style.top = \"0\";\n    paddedOverlay.style.bottom = \"0\";\n    paddedOverlay.style.margin = CUE_BACKGROUND_PADDING;\n    overlay.appendChild(paddedOverlay); // Determine if we need to compute the display states of the cues. This could\n    // be the case if a cue's state has been changed since the last computation or\n    // if it has not been computed yet.\n\n    function shouldCompute(cues) {\n      for (var i = 0; i < cues.length; i++) {\n        if (cues[i].hasBeenReset || !cues[i].displayState) {\n          return true;\n        }\n      }\n\n      return false;\n    } // We don't need to recompute the cues' display states. Just reuse them.\n\n\n    if (!shouldCompute(cues)) {\n      for (var i = 0; i < cues.length; i++) {\n        paddedOverlay.appendChild(cues[i].displayState);\n      }\n\n      return;\n    }\n\n    var boxPositions = [],\n        containerBox = BoxPosition.getSimpleBoxPosition(paddedOverlay),\n        fontSize = Math.round(containerBox.height * FONT_SIZE_PERCENT * 100) / 100;\n    var styleOptions = {\n      font: fontSize + \"px \" + FONT_STYLE\n    };\n\n    (function () {\n      var styleBox, cue;\n\n      for (var i = 0; i < cues.length; i++) {\n        cue = cues[i]; // Compute the intial position and styles of the cue div.\n\n        styleBox = new CueStyleBox(window, cue, styleOptions);\n        paddedOverlay.appendChild(styleBox.div); // Move the cue div to it's correct line position.\n\n        moveBoxToLinePosition(window, styleBox, containerBox, boxPositions); // Remember the computed div so that we don't have to recompute it later\n        // if we don't have too.\n\n        cue.displayState = styleBox.div;\n        boxPositions.push(BoxPosition.getSimpleBoxPosition(styleBox));\n      }\n    })();\n  };\n\n  WebVTT$1.Parser = function (window, vttjs, decoder) {\n    if (!decoder) {\n      decoder = vttjs;\n      vttjs = {};\n    }\n\n    if (!vttjs) {\n      vttjs = {};\n    }\n\n    this.window = window;\n    this.vttjs = vttjs;\n    this.state = \"INITIAL\";\n    this.buffer = \"\";\n    this.decoder = decoder || new TextDecoder(\"utf8\");\n    this.regionList = [];\n  };\n\n  WebVTT$1.Parser.prototype = {\n    // If the error is a ParsingError then report it to the consumer if\n    // possible. If it's not a ParsingError then throw it like normal.\n    reportOrThrowError: function reportOrThrowError(e) {\n      if (e instanceof ParsingError) {\n        this.onparsingerror && this.onparsingerror(e);\n      } else {\n        throw e;\n      }\n    },\n    parse: function parse(data) {\n      var self = this; // If there is no data then we won't decode it, but will just try to parse\n      // whatever is in buffer already. This may occur in circumstances, for\n      // example when flush() is called.\n\n      if (data) {\n        // Try to decode the data that we received.\n        self.buffer += self.decoder.decode(data, {\n          stream: true\n        });\n      }\n\n      function collectNextLine() {\n        var buffer = self.buffer;\n        var pos = 0;\n\n        while (pos < buffer.length && buffer[pos] !== '\\r' && buffer[pos] !== '\\n') {\n          ++pos;\n        }\n\n        var line = buffer.substr(0, pos); // Advance the buffer early in case we fail below.\n\n        if (buffer[pos] === '\\r') {\n          ++pos;\n        }\n\n        if (buffer[pos] === '\\n') {\n          ++pos;\n        }\n\n        self.buffer = buffer.substr(pos);\n        return line;\n      } // 3.4 WebVTT region and WebVTT region settings syntax\n\n\n      function parseRegion(input) {\n        var settings = new Settings();\n        parseOptions(input, function (k, v) {\n          switch (k) {\n            case \"id\":\n              settings.set(k, v);\n              break;\n\n            case \"width\":\n              settings.percent(k, v);\n              break;\n\n            case \"lines\":\n              settings.integer(k, v);\n              break;\n\n            case \"regionanchor\":\n            case \"viewportanchor\":\n              var xy = v.split(',');\n\n              if (xy.length !== 2) {\n                break;\n              } // We have to make sure both x and y parse, so use a temporary\n              // settings object here.\n\n\n              var anchor = new Settings();\n              anchor.percent(\"x\", xy[0]);\n              anchor.percent(\"y\", xy[1]);\n\n              if (!anchor.has(\"x\") || !anchor.has(\"y\")) {\n                break;\n              }\n\n              settings.set(k + \"X\", anchor.get(\"x\"));\n              settings.set(k + \"Y\", anchor.get(\"y\"));\n              break;\n\n            case \"scroll\":\n              settings.alt(k, v, [\"up\"]);\n              break;\n          }\n        }, /=/, /\\s/); // Create the region, using default values for any values that were not\n        // specified.\n\n        if (settings.has(\"id\")) {\n          var region = new (self.vttjs.VTTRegion || self.window.VTTRegion)();\n          region.width = settings.get(\"width\", 100);\n          region.lines = settings.get(\"lines\", 3);\n          region.regionAnchorX = settings.get(\"regionanchorX\", 0);\n          region.regionAnchorY = settings.get(\"regionanchorY\", 100);\n          region.viewportAnchorX = settings.get(\"viewportanchorX\", 0);\n          region.viewportAnchorY = settings.get(\"viewportanchorY\", 100);\n          region.scroll = settings.get(\"scroll\", \"\"); // Register the region.\n\n          self.onregion && self.onregion(region); // Remember the VTTRegion for later in case we parse any VTTCues that\n          // reference it.\n\n          self.regionList.push({\n            id: settings.get(\"id\"),\n            region: region\n          });\n        }\n      } // draft-pantos-http-live-streaming-20\n      // https://tools.ietf.org/html/draft-pantos-http-live-streaming-20#section-3.5\n      // 3.5 WebVTT\n\n\n      function parseTimestampMap(input) {\n        var settings = new Settings();\n        parseOptions(input, function (k, v) {\n          switch (k) {\n            case \"MPEGT\":\n              settings.integer(k + 'S', v);\n              break;\n\n            case \"LOCA\":\n              settings.set(k + 'L', parseTimeStamp(v));\n              break;\n          }\n        }, /[^\\d]:/, /,/);\n        self.ontimestampmap && self.ontimestampmap({\n          \"MPEGTS\": settings.get(\"MPEGTS\"),\n          \"LOCAL\": settings.get(\"LOCAL\")\n        });\n      } // 3.2 WebVTT metadata header syntax\n\n\n      function parseHeader(input) {\n        if (input.match(/X-TIMESTAMP-MAP/)) {\n          // This line contains HLS X-TIMESTAMP-MAP metadata\n          parseOptions(input, function (k, v) {\n            switch (k) {\n              case \"X-TIMESTAMP-MAP\":\n                parseTimestampMap(v);\n                break;\n            }\n          }, /=/);\n        } else {\n          parseOptions(input, function (k, v) {\n            switch (k) {\n              case \"Region\":\n                // 3.3 WebVTT region metadata header syntax\n                parseRegion(v);\n                break;\n            }\n          }, /:/);\n        }\n      } // 5.1 WebVTT file parsing.\n\n\n      try {\n        var line;\n\n        if (self.state === \"INITIAL\") {\n          // We can't start parsing until we have the first line.\n          if (!/\\r\\n|\\n/.test(self.buffer)) {\n            return this;\n          }\n\n          line = collectNextLine();\n          var m = line.match(/^WEBVTT([ \\t].*)?$/);\n\n          if (!m || !m[0]) {\n            throw new ParsingError(ParsingError.Errors.BadSignature);\n          }\n\n          self.state = \"HEADER\";\n        }\n\n        var alreadyCollectedLine = false;\n\n        while (self.buffer) {\n          // We can't parse a line until we have the full line.\n          if (!/\\r\\n|\\n/.test(self.buffer)) {\n            return this;\n          }\n\n          if (!alreadyCollectedLine) {\n            line = collectNextLine();\n          } else {\n            alreadyCollectedLine = false;\n          }\n\n          switch (self.state) {\n            case \"HEADER\":\n              // 13-18 - Allow a header (metadata) under the WEBVTT line.\n              if (/:/.test(line)) {\n                parseHeader(line);\n              } else if (!line) {\n                // An empty line terminates the header and starts the body (cues).\n                self.state = \"ID\";\n              }\n\n              continue;\n\n            case \"NOTE\":\n              // Ignore NOTE blocks.\n              if (!line) {\n                self.state = \"ID\";\n              }\n\n              continue;\n\n            case \"ID\":\n              // Check for the start of NOTE blocks.\n              if (/^NOTE($|[ \\t])/.test(line)) {\n                self.state = \"NOTE\";\n                break;\n              } // 19-29 - Allow any number of line terminators, then initialize new cue values.\n\n\n              if (!line) {\n                continue;\n              }\n\n              self.cue = new (self.vttjs.VTTCue || self.window.VTTCue)(0, 0, \"\");\n              self.state = \"CUE\"; // 30-39 - Check if self line contains an optional identifier or timing data.\n\n              if (line.indexOf(\"-->\") === -1) {\n                self.cue.id = line;\n                continue;\n              }\n\n            // Process line as start of a cue.\n\n            /*falls through*/\n\n            case \"CUE\":\n              // 40 - Collect cue timings and settings.\n              try {\n                parseCue(line, self.cue, self.regionList);\n              } catch (e) {\n                self.reportOrThrowError(e); // In case of an error ignore rest of the cue.\n\n                self.cue = null;\n                self.state = \"BADCUE\";\n                continue;\n              }\n\n              self.state = \"CUETEXT\";\n              continue;\n\n            case \"CUETEXT\":\n              var hasSubstring = line.indexOf(\"-->\") !== -1; // 34 - If we have an empty line then report the cue.\n              // 35 - If we have the special substring '-->' then report the cue,\n              // but do not collect the line as we need to process the current\n              // one as a new cue.\n\n              if (!line || hasSubstring && (alreadyCollectedLine = true)) {\n                // We are done parsing self cue.\n                self.oncue && self.oncue(self.cue);\n                self.cue = null;\n                self.state = \"ID\";\n                continue;\n              }\n\n              if (self.cue.text) {\n                self.cue.text += \"\\n\";\n              }\n\n              self.cue.text += line;\n              continue;\n\n            case \"BADCUE\":\n              // BADCUE\n              // 54-62 - Collect and discard the remaining cue.\n              if (!line) {\n                self.state = \"ID\";\n              }\n\n              continue;\n          }\n        }\n      } catch (e) {\n        self.reportOrThrowError(e); // If we are currently parsing a cue, report what we have.\n\n        if (self.state === \"CUETEXT\" && self.cue && self.oncue) {\n          self.oncue(self.cue);\n        }\n\n        self.cue = null; // Enter BADWEBVTT state if header was not parsed correctly otherwise\n        // another exception occurred so enter BADCUE state.\n\n        self.state = self.state === \"INITIAL\" ? \"BADWEBVTT\" : \"BADCUE\";\n      }\n\n      return this;\n    },\n    flush: function flush() {\n      var self = this;\n\n      try {\n        // Finish decoding the stream.\n        self.buffer += self.decoder.decode(); // Synthesize the end of the current cue or region.\n\n        if (self.cue || self.state === \"HEADER\") {\n          self.buffer += \"\\n\\n\";\n          self.parse();\n        } // If we've flushed, parsed, and we're still on the INITIAL state then\n        // that means we don't have enough of the stream to parse the first\n        // line.\n\n\n        if (self.state === \"INITIAL\") {\n          throw new ParsingError(ParsingError.Errors.BadSignature);\n        }\n      } catch (e) {\n        self.reportOrThrowError(e);\n      }\n\n      self.onflush && self.onflush();\n      return this;\n    }\n  };\n  var vtt = WebVTT$1;\n\n  /**\n   * Copyright 2013 vtt.js Contributors\n   *\n   * Licensed under the Apache License, Version 2.0 (the \"License\");\n   * you may not use this file except in compliance with the License.\n   * You may obtain a copy of the License at\n   *\n   *   http://www.apache.org/licenses/LICENSE-2.0\n   *\n   * Unless required by applicable law or agreed to in writing, software\n   * distributed under the License is distributed on an \"AS IS\" BASIS,\n   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n   * See the License for the specific language governing permissions and\n   * limitations under the License.\n   */\n  var autoKeyword = \"auto\";\n  var directionSetting = {\n    \"\": 1,\n    \"lr\": 1,\n    \"rl\": 1\n  };\n  var alignSetting = {\n    \"start\": 1,\n    \"middle\": 1,\n    \"end\": 1,\n    \"left\": 1,\n    \"right\": 1\n  };\n\n  function findDirectionSetting(value) {\n    if (typeof value !== \"string\") {\n      return false;\n    }\n\n    var dir = directionSetting[value.toLowerCase()];\n    return dir ? value.toLowerCase() : false;\n  }\n\n  function findAlignSetting(value) {\n    if (typeof value !== \"string\") {\n      return false;\n    }\n\n    var align = alignSetting[value.toLowerCase()];\n    return align ? value.toLowerCase() : false;\n  }\n\n  function VTTCue(startTime, endTime, text) {\n    /**\n     * Shim implementation specific properties. These properties are not in\n     * the spec.\n     */\n    // Lets us know when the VTTCue's data has changed in such a way that we need\n    // to recompute its display state. This lets us compute its display state\n    // lazily.\n    this.hasBeenReset = false;\n    /**\n     * VTTCue and TextTrackCue properties\n     * http://dev.w3.org/html5/webvtt/#vttcue-interface\n     */\n\n    var _id = \"\";\n    var _pauseOnExit = false;\n    var _startTime = startTime;\n    var _endTime = endTime;\n    var _text = text;\n    var _region = null;\n    var _vertical = \"\";\n    var _snapToLines = true;\n    var _line = \"auto\";\n    var _lineAlign = \"start\";\n    var _position = 50;\n    var _positionAlign = \"middle\";\n    var _size = 50;\n    var _align = \"middle\";\n    Object.defineProperties(this, {\n      \"id\": {\n        enumerable: true,\n        get: function get() {\n          return _id;\n        },\n        set: function set(value) {\n          _id = \"\" + value;\n        }\n      },\n      \"pauseOnExit\": {\n        enumerable: true,\n        get: function get() {\n          return _pauseOnExit;\n        },\n        set: function set(value) {\n          _pauseOnExit = !!value;\n        }\n      },\n      \"startTime\": {\n        enumerable: true,\n        get: function get() {\n          return _startTime;\n        },\n        set: function set(value) {\n          if (typeof value !== \"number\") {\n            throw new TypeError(\"Start time must be set to a number.\");\n          }\n\n          _startTime = value;\n          this.hasBeenReset = true;\n        }\n      },\n      \"endTime\": {\n        enumerable: true,\n        get: function get() {\n          return _endTime;\n        },\n        set: function set(value) {\n          if (typeof value !== \"number\") {\n            throw new TypeError(\"End time must be set to a number.\");\n          }\n\n          _endTime = value;\n          this.hasBeenReset = true;\n        }\n      },\n      \"text\": {\n        enumerable: true,\n        get: function get() {\n          return _text;\n        },\n        set: function set(value) {\n          _text = \"\" + value;\n          this.hasBeenReset = true;\n        }\n      },\n      \"region\": {\n        enumerable: true,\n        get: function get() {\n          return _region;\n        },\n        set: function set(value) {\n          _region = value;\n          this.hasBeenReset = true;\n        }\n      },\n      \"vertical\": {\n        enumerable: true,\n        get: function get() {\n          return _vertical;\n        },\n        set: function set(value) {\n          var setting = findDirectionSetting(value); // Have to check for false because the setting an be an empty string.\n\n          if (setting === false) {\n            throw new SyntaxError(\"An invalid or illegal string was specified.\");\n          }\n\n          _vertical = setting;\n          this.hasBeenReset = true;\n        }\n      },\n      \"snapToLines\": {\n        enumerable: true,\n        get: function get() {\n          return _snapToLines;\n        },\n        set: function set(value) {\n          _snapToLines = !!value;\n          this.hasBeenReset = true;\n        }\n      },\n      \"line\": {\n        enumerable: true,\n        get: function get() {\n          return _line;\n        },\n        set: function set(value) {\n          if (typeof value !== \"number\" && value !== autoKeyword) {\n            throw new SyntaxError(\"An invalid number or illegal string was specified.\");\n          }\n\n          _line = value;\n          this.hasBeenReset = true;\n        }\n      },\n      \"lineAlign\": {\n        enumerable: true,\n        get: function get() {\n          return _lineAlign;\n        },\n        set: function set(value) {\n          var setting = findAlignSetting(value);\n\n          if (!setting) {\n            throw new SyntaxError(\"An invalid or illegal string was specified.\");\n          }\n\n          _lineAlign = setting;\n          this.hasBeenReset = true;\n        }\n      },\n      \"position\": {\n        enumerable: true,\n        get: function get() {\n          return _position;\n        },\n        set: function set(value) {\n          if (value < 0 || value > 100) {\n            throw new Error(\"Position must be between 0 and 100.\");\n          }\n\n          _position = value;\n          this.hasBeenReset = true;\n        }\n      },\n      \"positionAlign\": {\n        enumerable: true,\n        get: function get() {\n          return _positionAlign;\n        },\n        set: function set(value) {\n          var setting = findAlignSetting(value);\n\n          if (!setting) {\n            throw new SyntaxError(\"An invalid or illegal string was specified.\");\n          }\n\n          _positionAlign = setting;\n          this.hasBeenReset = true;\n        }\n      },\n      \"size\": {\n        enumerable: true,\n        get: function get() {\n          return _size;\n        },\n        set: function set(value) {\n          if (value < 0 || value > 100) {\n            throw new Error(\"Size must be between 0 and 100.\");\n          }\n\n          _size = value;\n          this.hasBeenReset = true;\n        }\n      },\n      \"align\": {\n        enumerable: true,\n        get: function get() {\n          return _align;\n        },\n        set: function set(value) {\n          var setting = findAlignSetting(value);\n\n          if (!setting) {\n            throw new SyntaxError(\"An invalid or illegal string was specified.\");\n          }\n\n          _align = setting;\n          this.hasBeenReset = true;\n        }\n      }\n    });\n    /**\n     * Other <track> spec defined properties\n     */\n    // http://www.whatwg.org/specs/web-apps/current-work/multipage/the-video-element.html#text-track-cue-display-state\n\n    this.displayState = undefined;\n  }\n  /**\n   * VTTCue methods\n   */\n\n\n  VTTCue.prototype.getCueAsHTML = function () {\n    // Assume WebVTT.convertCueToDOMTree is on the global.\n    return WebVTT.convertCueToDOMTree(window, this.text);\n  };\n\n  var vttcue = VTTCue;\n\n  /**\n   * Copyright 2013 vtt.js Contributors\n   *\n   * Licensed under the Apache License, Version 2.0 (the \"License\");\n   * you may not use this file except in compliance with the License.\n   * You may obtain a copy of the License at\n   *\n   *   http://www.apache.org/licenses/LICENSE-2.0\n   *\n   * Unless required by applicable law or agreed to in writing, software\n   * distributed under the License is distributed on an \"AS IS\" BASIS,\n   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n   * See the License for the specific language governing permissions and\n   * limitations under the License.\n   */\n  var scrollSetting = {\n    \"\": true,\n    \"up\": true\n  };\n\n  function findScrollSetting(value) {\n    if (typeof value !== \"string\") {\n      return false;\n    }\n\n    var scroll = scrollSetting[value.toLowerCase()];\n    return scroll ? value.toLowerCase() : false;\n  }\n\n  function isValidPercentValue(value) {\n    return typeof value === \"number\" && value >= 0 && value <= 100;\n  } // VTTRegion shim http://dev.w3.org/html5/webvtt/#vttregion-interface\n\n\n  function VTTRegion() {\n    var _width = 100;\n    var _lines = 3;\n    var _regionAnchorX = 0;\n    var _regionAnchorY = 100;\n    var _viewportAnchorX = 0;\n    var _viewportAnchorY = 100;\n    var _scroll = \"\";\n    Object.defineProperties(this, {\n      \"width\": {\n        enumerable: true,\n        get: function get() {\n          return _width;\n        },\n        set: function set(value) {\n          if (!isValidPercentValue(value)) {\n            throw new Error(\"Width must be between 0 and 100.\");\n          }\n\n          _width = value;\n        }\n      },\n      \"lines\": {\n        enumerable: true,\n        get: function get() {\n          return _lines;\n        },\n        set: function set(value) {\n          if (typeof value !== \"number\") {\n            throw new TypeError(\"Lines must be set to a number.\");\n          }\n\n          _lines = value;\n        }\n      },\n      \"regionAnchorY\": {\n        enumerable: true,\n        get: function get() {\n          return _regionAnchorY;\n        },\n        set: function set(value) {\n          if (!isValidPercentValue(value)) {\n            throw new Error(\"RegionAnchorX must be between 0 and 100.\");\n          }\n\n          _regionAnchorY = value;\n        }\n      },\n      \"regionAnchorX\": {\n        enumerable: true,\n        get: function get() {\n          return _regionAnchorX;\n        },\n        set: function set(value) {\n          if (!isValidPercentValue(value)) {\n            throw new Error(\"RegionAnchorY must be between 0 and 100.\");\n          }\n\n          _regionAnchorX = value;\n        }\n      },\n      \"viewportAnchorY\": {\n        enumerable: true,\n        get: function get() {\n          return _viewportAnchorY;\n        },\n        set: function set(value) {\n          if (!isValidPercentValue(value)) {\n            throw new Error(\"ViewportAnchorY must be between 0 and 100.\");\n          }\n\n          _viewportAnchorY = value;\n        }\n      },\n      \"viewportAnchorX\": {\n        enumerable: true,\n        get: function get() {\n          return _viewportAnchorX;\n        },\n        set: function set(value) {\n          if (!isValidPercentValue(value)) {\n            throw new Error(\"ViewportAnchorX must be between 0 and 100.\");\n          }\n\n          _viewportAnchorX = value;\n        }\n      },\n      \"scroll\": {\n        enumerable: true,\n        get: function get() {\n          return _scroll;\n        },\n        set: function set(value) {\n          var setting = findScrollSetting(value); // Have to check for false as an empty string is a legal value.\n\n          if (setting === false) {\n            throw new SyntaxError(\"An invalid or illegal string was specified.\");\n          }\n\n          _scroll = setting;\n        }\n      }\n    });\n  }\n\n  var vttregion = VTTRegion;\n\n  var browserIndex = createCommonjsModule(function (module) {\n    /**\n     * Copyright 2013 vtt.js Contributors\n     *\n     * Licensed under the Apache License, Version 2.0 (the \"License\");\n     * you may not use this file except in compliance with the License.\n     * You may obtain a copy of the License at\n     *\n     *   http://www.apache.org/licenses/LICENSE-2.0\n     *\n     * Unless required by applicable law or agreed to in writing, software\n     * distributed under the License is distributed on an \"AS IS\" BASIS,\n     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n     * See the License for the specific language governing permissions and\n     * limitations under the License.\n     */\n    // Default exports for Node. Export the extended versions of VTTCue and\n    // VTTRegion in Node since we likely want the capability to convert back and\n    // forth between JSON. If we don't then it's not that big of a deal since we're\n    // off browser.\n    var vttjs = module.exports = {\n      WebVTT: vtt,\n      VTTCue: vttcue,\n      VTTRegion: vttregion\n    };\n    window$1.vttjs = vttjs;\n    window$1.WebVTT = vttjs.WebVTT;\n    var cueShim = vttjs.VTTCue;\n    var regionShim = vttjs.VTTRegion;\n    var nativeVTTCue = window$1.VTTCue;\n    var nativeVTTRegion = window$1.VTTRegion;\n\n    vttjs.shim = function () {\n      window$1.VTTCue = cueShim;\n      window$1.VTTRegion = regionShim;\n    };\n\n    vttjs.restore = function () {\n      window$1.VTTCue = nativeVTTCue;\n      window$1.VTTRegion = nativeVTTRegion;\n    };\n\n    if (!window$1.VTTCue) {\n      vttjs.shim();\n    }\n  });\n  var browserIndex_1 = browserIndex.WebVTT;\n  var browserIndex_2 = browserIndex.VTTCue;\n  var browserIndex_3 = browserIndex.VTTRegion;\n\n  /**\n   * An Object containing a structure like: `{src: 'url', type: 'mimetype'}` or string\n   * that just contains the src url alone.\n   * * `var SourceObject = {src: 'http://ex.com/video.mp4', type: 'video/mp4'};`\n     * `var SourceString = 'http://example.com/some-video.mp4';`\n   *\n   * @typedef {Object|string} Tech~SourceObject\n   *\n   * @property {string} src\n   *           The url to the source\n   *\n   * @property {string} type\n   *           The mime type of the source\n   */\n\n  /**\n   * A function used by {@link Tech} to create a new {@link TextTrack}.\n   *\n   * @private\n   *\n   * @param {Tech} self\n   *        An instance of the Tech class.\n   *\n   * @param {string} kind\n   *        `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata)\n   *\n   * @param {string} [label]\n   *        Label to identify the text track\n   *\n   * @param {string} [language]\n   *        Two letter language abbreviation\n   *\n   * @param {Object} [options={}]\n   *        An object with additional text track options\n   *\n   * @return {TextTrack}\n   *          The text track that was created.\n   */\n\n  function createTrackHelper(self, kind, label, language, options) {\n    if (options === void 0) {\n      options = {};\n    }\n\n    var tracks = self.textTracks();\n    options.kind = kind;\n\n    if (label) {\n      options.label = label;\n    }\n\n    if (language) {\n      options.language = language;\n    }\n\n    options.tech = self;\n    var track = new ALL.text.TrackClass(options);\n    tracks.addTrack(track);\n    return track;\n  }\n  /**\n   * This is the base class for media playback technology controllers, such as\n   * {@link Flash} and {@link HTML5}\n   *\n   * @extends Component\n   */\n\n\n  var Tech =\n  /*#__PURE__*/\n  function (_Component) {\n    _inheritsLoose(Tech, _Component);\n\n    /**\n    * Create an instance of this Tech.\n    *\n    * @param {Object} [options]\n    *        The key/value store of player options.\n    *\n    * @param {Component~ReadyCallback} ready\n    *        Callback function to call when the `HTML5` Tech is ready.\n    */\n    function Tech(options, ready) {\n      var _this;\n\n      if (options === void 0) {\n        options = {};\n      }\n\n      if (ready === void 0) {\n        ready = function ready() {};\n      }\n\n      // we don't want the tech to report user activity automatically.\n      // This is done manually in addControlsListeners\n      options.reportTouchActivity = false;\n      _this = _Component.call(this, null, options, ready) || this; // keep track of whether the current source has played at all to\n      // implement a very limited played()\n\n      _this.hasStarted_ = false;\n\n      _this.on('playing', function () {\n        this.hasStarted_ = true;\n      });\n\n      _this.on('loadstart', function () {\n        this.hasStarted_ = false;\n      });\n\n      ALL.names.forEach(function (name) {\n        var props = ALL[name];\n\n        if (options && options[props.getterName]) {\n          _this[props.privateName] = options[props.getterName];\n        }\n      }); // Manually track progress in cases where the browser/flash player doesn't report it.\n\n      if (!_this.featuresProgressEvents) {\n        _this.manualProgressOn();\n      } // Manually track timeupdates in cases where the browser/flash player doesn't report it.\n\n\n      if (!_this.featuresTimeupdateEvents) {\n        _this.manualTimeUpdatesOn();\n      }\n\n      ['Text', 'Audio', 'Video'].forEach(function (track) {\n        if (options[\"native\" + track + \"Tracks\"] === false) {\n          _this[\"featuresNative\" + track + \"Tracks\"] = false;\n        }\n      });\n\n      if (options.nativeCaptions === false || options.nativeTextTracks === false) {\n        _this.featuresNativeTextTracks = false;\n      } else if (options.nativeCaptions === true || options.nativeTextTracks === true) {\n        _this.featuresNativeTextTracks = true;\n      }\n\n      if (!_this.featuresNativeTextTracks) {\n        _this.emulateTextTracks();\n      }\n\n      _this.autoRemoteTextTracks_ = new ALL.text.ListClass();\n\n      _this.initTrackListeners(); // Turn on component tap events only if not using native controls\n\n\n      if (!options.nativeControlsForTouch) {\n        _this.emitTapEvents();\n      }\n\n      if (_this.constructor) {\n        _this.name_ = _this.constructor.name || 'Unknown Tech';\n      }\n\n      return _this;\n    }\n    /**\n     * A special function to trigger source set in a way that will allow player\n     * to re-trigger if the player or tech are not ready yet.\n     *\n     * @fires Tech#sourceset\n     * @param {string} src The source string at the time of the source changing.\n     */\n\n\n    var _proto = Tech.prototype;\n\n    _proto.triggerSourceset = function triggerSourceset(src) {\n      var _this2 = this;\n\n      if (!this.isReady_) {\n        // on initial ready we have to trigger source set\n        // 1ms after ready so that player can watch for it.\n        this.one('ready', function () {\n          return _this2.setTimeout(function () {\n            return _this2.triggerSourceset(src);\n          }, 1);\n        });\n      }\n      /**\n       * Fired when the source is set on the tech causing the media element\n       * to reload.\n       *\n       * @see {@link Player#event:sourceset}\n       * @event Tech#sourceset\n       * @type {EventTarget~Event}\n       */\n\n\n      this.trigger({\n        src: src,\n        type: 'sourceset'\n      });\n    }\n    /* Fallbacks for unsupported event types\n    ================================================================================ */\n\n    /**\n     * Polyfill the `progress` event for browsers that don't support it natively.\n     *\n     * @see {@link Tech#trackProgress}\n     */\n    ;\n\n    _proto.manualProgressOn = function manualProgressOn() {\n      this.on('durationchange', this.onDurationChange);\n      this.manualProgress = true; // Trigger progress watching when a source begins loading\n\n      this.one('ready', this.trackProgress);\n    }\n    /**\n     * Turn off the polyfill for `progress` events that was created in\n     * {@link Tech#manualProgressOn}\n     */\n    ;\n\n    _proto.manualProgressOff = function manualProgressOff() {\n      this.manualProgress = false;\n      this.stopTrackingProgress();\n      this.off('durationchange', this.onDurationChange);\n    }\n    /**\n     * This is used to trigger a `progress` event when the buffered percent changes. It\n     * sets an interval function that will be called every 500 milliseconds to check if the\n     * buffer end percent has changed.\n     *\n     * > This function is called by {@link Tech#manualProgressOn}\n     *\n     * @param {EventTarget~Event} event\n     *        The `ready` event that caused this to run.\n     *\n     * @listens Tech#ready\n     * @fires Tech#progress\n     */\n    ;\n\n    _proto.trackProgress = function trackProgress(event) {\n      this.stopTrackingProgress();\n      this.progressInterval = this.setInterval(bind(this, function () {\n        // Don't trigger unless buffered amount is greater than last time\n        var numBufferedPercent = this.bufferedPercent();\n\n        if (this.bufferedPercent_ !== numBufferedPercent) {\n          /**\n           * See {@link Player#progress}\n           *\n           * @event Tech#progress\n           * @type {EventTarget~Event}\n           */\n          this.trigger('progress');\n        }\n\n        this.bufferedPercent_ = numBufferedPercent;\n\n        if (numBufferedPercent === 1) {\n          this.stopTrackingProgress();\n        }\n      }), 500);\n    }\n    /**\n     * Update our internal duration on a `durationchange` event by calling\n     * {@link Tech#duration}.\n     *\n     * @param {EventTarget~Event} event\n     *        The `durationchange` event that caused this to run.\n     *\n     * @listens Tech#durationchange\n     */\n    ;\n\n    _proto.onDurationChange = function onDurationChange(event) {\n      this.duration_ = this.duration();\n    }\n    /**\n     * Get and create a `TimeRange` object for buffering.\n     *\n     * @return {TimeRange}\n     *         The time range object that was created.\n     */\n    ;\n\n    _proto.buffered = function buffered() {\n      return createTimeRanges(0, 0);\n    }\n    /**\n     * Get the percentage of the current video that is currently buffered.\n     *\n     * @return {number}\n     *         A number from 0 to 1 that represents the decimal percentage of the\n     *         video that is buffered.\n     *\n     */\n    ;\n\n    _proto.bufferedPercent = function bufferedPercent$$1() {\n      return bufferedPercent(this.buffered(), this.duration_);\n    }\n    /**\n     * Turn off the polyfill for `progress` events that was created in\n     * {@link Tech#manualProgressOn}\n     * Stop manually tracking progress events by clearing the interval that was set in\n     * {@link Tech#trackProgress}.\n     */\n    ;\n\n    _proto.stopTrackingProgress = function stopTrackingProgress() {\n      this.clearInterval(this.progressInterval);\n    }\n    /**\n     * Polyfill the `timeupdate` event for browsers that don't support it.\n     *\n     * @see {@link Tech#trackCurrentTime}\n     */\n    ;\n\n    _proto.manualTimeUpdatesOn = function manualTimeUpdatesOn() {\n      this.manualTimeUpdates = true;\n      this.on('play', this.trackCurrentTime);\n      this.on('pause', this.stopTrackingCurrentTime);\n    }\n    /**\n     * Turn off the polyfill for `timeupdate` events that was created in\n     * {@link Tech#manualTimeUpdatesOn}\n     */\n    ;\n\n    _proto.manualTimeUpdatesOff = function manualTimeUpdatesOff() {\n      this.manualTimeUpdates = false;\n      this.stopTrackingCurrentTime();\n      this.off('play', this.trackCurrentTime);\n      this.off('pause', this.stopTrackingCurrentTime);\n    }\n    /**\n     * Sets up an interval function to track current time and trigger `timeupdate` every\n     * 250 milliseconds.\n     *\n     * @listens Tech#play\n     * @triggers Tech#timeupdate\n     */\n    ;\n\n    _proto.trackCurrentTime = function trackCurrentTime() {\n      if (this.currentTimeInterval) {\n        this.stopTrackingCurrentTime();\n      }\n\n      this.currentTimeInterval = this.setInterval(function () {\n        /**\n         * Triggered at an interval of 250ms to indicated that time is passing in the video.\n         *\n         * @event Tech#timeupdate\n         * @type {EventTarget~Event}\n         */\n        this.trigger({\n          type: 'timeupdate',\n          target: this,\n          manuallyTriggered: true\n        }); // 42 = 24 fps // 250 is what Webkit uses // FF uses 15\n      }, 250);\n    }\n    /**\n     * Stop the interval function created in {@link Tech#trackCurrentTime} so that the\n     * `timeupdate` event is no longer triggered.\n     *\n     * @listens {Tech#pause}\n     */\n    ;\n\n    _proto.stopTrackingCurrentTime = function stopTrackingCurrentTime() {\n      this.clearInterval(this.currentTimeInterval); // #1002 - if the video ends right before the next timeupdate would happen,\n      // the progress bar won't make it all the way to the end\n\n      this.trigger({\n        type: 'timeupdate',\n        target: this,\n        manuallyTriggered: true\n      });\n    }\n    /**\n     * Turn off all event polyfills, clear the `Tech`s {@link AudioTrackList},\n     * {@link VideoTrackList}, and {@link TextTrackList}, and dispose of this Tech.\n     *\n     * @fires Component#dispose\n     */\n    ;\n\n    _proto.dispose = function dispose() {\n      // clear out all tracks because we can't reuse them between techs\n      this.clearTracks(NORMAL.names); // Turn off any manual progress or timeupdate tracking\n\n      if (this.manualProgress) {\n        this.manualProgressOff();\n      }\n\n      if (this.manualTimeUpdates) {\n        this.manualTimeUpdatesOff();\n      }\n\n      _Component.prototype.dispose.call(this);\n    }\n    /**\n     * Clear out a single `TrackList` or an array of `TrackLists` given their names.\n     *\n     * > Note: Techs without source handlers should call this between sources for `video`\n     *         & `audio` tracks. You don't want to use them between tracks!\n     *\n     * @param {string[]|string} types\n     *        TrackList names to clear, valid names are `video`, `audio`, and\n     *        `text`.\n     */\n    ;\n\n    _proto.clearTracks = function clearTracks(types) {\n      var _this3 = this;\n\n      types = [].concat(types); // clear out all tracks because we can't reuse them between techs\n\n      types.forEach(function (type) {\n        var list = _this3[type + \"Tracks\"]() || [];\n        var i = list.length;\n\n        while (i--) {\n          var track = list[i];\n\n          if (type === 'text') {\n            _this3.removeRemoteTextTrack(track);\n          }\n\n          list.removeTrack(track);\n        }\n      });\n    }\n    /**\n     * Remove any TextTracks added via addRemoteTextTrack that are\n     * flagged for automatic garbage collection\n     */\n    ;\n\n    _proto.cleanupAutoTextTracks = function cleanupAutoTextTracks() {\n      var list = this.autoRemoteTextTracks_ || [];\n      var i = list.length;\n\n      while (i--) {\n        var track = list[i];\n        this.removeRemoteTextTrack(track);\n      }\n    }\n    /**\n     * Reset the tech, which will removes all sources and reset the internal readyState.\n     *\n     * @abstract\n     */\n    ;\n\n    _proto.reset = function reset() {}\n    /**\n     * Get or set an error on the Tech.\n     *\n     * @param {MediaError} [err]\n     *        Error to set on the Tech\n     *\n     * @return {MediaError|null}\n     *         The current error object on the tech, or null if there isn't one.\n     */\n    ;\n\n    _proto.error = function error(err) {\n      if (err !== undefined) {\n        this.error_ = new MediaError(err);\n        this.trigger('error');\n      }\n\n      return this.error_;\n    }\n    /**\n     * Returns the `TimeRange`s that have been played through for the current source.\n     *\n     * > NOTE: This implementation is incomplete. It does not track the played `TimeRange`.\n     *         It only checks whether the source has played at all or not.\n     *\n     * @return {TimeRange}\n     *         - A single time range if this video has played\n     *         - An empty set of ranges if not.\n     */\n    ;\n\n    _proto.played = function played() {\n      if (this.hasStarted_) {\n        return createTimeRanges(0, 0);\n      }\n\n      return createTimeRanges();\n    }\n    /**\n     * Causes a manual time update to occur if {@link Tech#manualTimeUpdatesOn} was\n     * previously called.\n     *\n     * @fires Tech#timeupdate\n     */\n    ;\n\n    _proto.setCurrentTime = function setCurrentTime() {\n      // improve the accuracy of manual timeupdates\n      if (this.manualTimeUpdates) {\n        /**\n         * A manual `timeupdate` event.\n         *\n         * @event Tech#timeupdate\n         * @type {EventTarget~Event}\n         */\n        this.trigger({\n          type: 'timeupdate',\n          target: this,\n          manuallyTriggered: true\n        });\n      }\n    }\n    /**\n     * Turn on listeners for {@link VideoTrackList}, {@link {AudioTrackList}, and\n     * {@link TextTrackList} events.\n     *\n     * This adds {@link EventTarget~EventListeners} for `addtrack`, and  `removetrack`.\n     *\n     * @fires Tech#audiotrackchange\n     * @fires Tech#videotrackchange\n     * @fires Tech#texttrackchange\n     */\n    ;\n\n    _proto.initTrackListeners = function initTrackListeners() {\n      var _this4 = this;\n\n      /**\n        * Triggered when tracks are added or removed on the Tech {@link AudioTrackList}\n        *\n        * @event Tech#audiotrackchange\n        * @type {EventTarget~Event}\n        */\n\n      /**\n        * Triggered when tracks are added or removed on the Tech {@link VideoTrackList}\n        *\n        * @event Tech#videotrackchange\n        * @type {EventTarget~Event}\n        */\n\n      /**\n        * Triggered when tracks are added or removed on the Tech {@link TextTrackList}\n        *\n        * @event Tech#texttrackchange\n        * @type {EventTarget~Event}\n        */\n      NORMAL.names.forEach(function (name) {\n        var props = NORMAL[name];\n\n        var trackListChanges = function trackListChanges() {\n          _this4.trigger(name + \"trackchange\");\n        };\n\n        var tracks = _this4[props.getterName]();\n\n        tracks.addEventListener('removetrack', trackListChanges);\n        tracks.addEventListener('addtrack', trackListChanges);\n\n        _this4.on('dispose', function () {\n          tracks.removeEventListener('removetrack', trackListChanges);\n          tracks.removeEventListener('addtrack', trackListChanges);\n        });\n      });\n    }\n    /**\n     * Emulate TextTracks using vtt.js if necessary\n     *\n     * @fires Tech#vttjsloaded\n     * @fires Tech#vttjserror\n     */\n    ;\n\n    _proto.addWebVttScript_ = function addWebVttScript_() {\n      var _this5 = this;\n\n      if (window$1.WebVTT) {\n        return;\n      } // Initially, Tech.el_ is a child of a dummy-div wait until the Component system\n      // signals that the Tech is ready at which point Tech.el_ is part of the DOM\n      // before inserting the WebVTT script\n\n\n      if (document.body.contains(this.el())) {\n        // load via require if available and vtt.js script location was not passed in\n        // as an option. novtt builds will turn the above require call into an empty object\n        // which will cause this if check to always fail.\n        if (!this.options_['vtt.js'] && isPlain(browserIndex) && Object.keys(browserIndex).length > 0) {\n          this.trigger('vttjsloaded');\n          return;\n        } // load vtt.js via the script location option or the cdn of no location was\n        // passed in\n\n\n        var script = document.createElement('script');\n        script.src = this.options_['vtt.js'] || 'https://vjs.zencdn.net/vttjs/0.14.1/vtt.min.js';\n\n        script.onload = function () {\n          /**\n           * Fired when vtt.js is loaded.\n           *\n           * @event Tech#vttjsloaded\n           * @type {EventTarget~Event}\n           */\n          _this5.trigger('vttjsloaded');\n        };\n\n        script.onerror = function () {\n          /**\n           * Fired when vtt.js was not loaded due to an error\n           *\n           * @event Tech#vttjsloaded\n           * @type {EventTarget~Event}\n           */\n          _this5.trigger('vttjserror');\n        };\n\n        this.on('dispose', function () {\n          script.onload = null;\n          script.onerror = null;\n        }); // but have not loaded yet and we set it to true before the inject so that\n        // we don't overwrite the injected window.WebVTT if it loads right away\n\n        window$1.WebVTT = true;\n        this.el().parentNode.appendChild(script);\n      } else {\n        this.ready(this.addWebVttScript_);\n      }\n    }\n    /**\n     * Emulate texttracks\n     *\n     */\n    ;\n\n    _proto.emulateTextTracks = function emulateTextTracks() {\n      var _this6 = this;\n\n      var tracks = this.textTracks();\n      var remoteTracks = this.remoteTextTracks();\n\n      var handleAddTrack = function handleAddTrack(e) {\n        return tracks.addTrack(e.track);\n      };\n\n      var handleRemoveTrack = function handleRemoveTrack(e) {\n        return tracks.removeTrack(e.track);\n      };\n\n      remoteTracks.on('addtrack', handleAddTrack);\n      remoteTracks.on('removetrack', handleRemoveTrack);\n      this.addWebVttScript_();\n\n      var updateDisplay = function updateDisplay() {\n        return _this6.trigger('texttrackchange');\n      };\n\n      var textTracksChanges = function textTracksChanges() {\n        updateDisplay();\n\n        for (var i = 0; i < tracks.length; i++) {\n          var track = tracks[i];\n          track.removeEventListener('cuechange', updateDisplay);\n\n          if (track.mode === 'showing') {\n            track.addEventListener('cuechange', updateDisplay);\n          }\n        }\n      };\n\n      textTracksChanges();\n      tracks.addEventListener('change', textTracksChanges);\n      tracks.addEventListener('addtrack', textTracksChanges);\n      tracks.addEventListener('removetrack', textTracksChanges);\n      this.on('dispose', function () {\n        remoteTracks.off('addtrack', handleAddTrack);\n        remoteTracks.off('removetrack', handleRemoveTrack);\n        tracks.removeEventListener('change', textTracksChanges);\n        tracks.removeEventListener('addtrack', textTracksChanges);\n        tracks.removeEventListener('removetrack', textTracksChanges);\n\n        for (var i = 0; i < tracks.length; i++) {\n          var track = tracks[i];\n          track.removeEventListener('cuechange', updateDisplay);\n        }\n      });\n    }\n    /**\n     * Create and returns a remote {@link TextTrack} object.\n     *\n     * @param {string} kind\n     *        `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata)\n     *\n     * @param {string} [label]\n     *        Label to identify the text track\n     *\n     * @param {string} [language]\n     *        Two letter language abbreviation\n     *\n     * @return {TextTrack}\n     *         The TextTrack that gets created.\n     */\n    ;\n\n    _proto.addTextTrack = function addTextTrack(kind, label, language) {\n      if (!kind) {\n        throw new Error('TextTrack kind is required but was not provided');\n      }\n\n      return createTrackHelper(this, kind, label, language);\n    }\n    /**\n     * Create an emulated TextTrack for use by addRemoteTextTrack\n     *\n     * This is intended to be overridden by classes that inherit from\n     * Tech in order to create native or custom TextTracks.\n     *\n     * @param {Object} options\n     *        The object should contain the options to initialize the TextTrack with.\n     *\n     * @param {string} [options.kind]\n     *        `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata).\n     *\n     * @param {string} [options.label].\n     *        Label to identify the text track\n     *\n     * @param {string} [options.language]\n     *        Two letter language abbreviation.\n     *\n     * @return {HTMLTrackElement}\n     *         The track element that gets created.\n     */\n    ;\n\n    _proto.createRemoteTextTrack = function createRemoteTextTrack(options) {\n      var track = mergeOptions(options, {\n        tech: this\n      });\n      return new REMOTE.remoteTextEl.TrackClass(track);\n    }\n    /**\n     * Creates a remote text track object and returns an html track element.\n     *\n     * > Note: This can be an emulated {@link HTMLTrackElement} or a native one.\n     *\n     * @param {Object} options\n     *        See {@link Tech#createRemoteTextTrack} for more detailed properties.\n     *\n     * @param {boolean} [manualCleanup=true]\n     *        - When false: the TextTrack will be automatically removed from the video\n     *          element whenever the source changes\n     *        - When True: The TextTrack will have to be cleaned up manually\n     *\n     * @return {HTMLTrackElement}\n     *         An Html Track Element.\n     *\n     * @deprecated The default functionality for this function will be equivalent\n     *             to \"manualCleanup=false\" in the future. The manualCleanup parameter will\n     *             also be removed.\n     */\n    ;\n\n    _proto.addRemoteTextTrack = function addRemoteTextTrack(options, manualCleanup) {\n      var _this7 = this;\n\n      if (options === void 0) {\n        options = {};\n      }\n\n      var htmlTrackElement = this.createRemoteTextTrack(options);\n\n      if (manualCleanup !== true && manualCleanup !== false) {\n        // deprecation warning\n        log.warn('Calling addRemoteTextTrack without explicitly setting the \"manualCleanup\" parameter to `true` is deprecated and default to `false` in future version of video.js');\n        manualCleanup = true;\n      } // store HTMLTrackElement and TextTrack to remote list\n\n\n      this.remoteTextTrackEls().addTrackElement_(htmlTrackElement);\n      this.remoteTextTracks().addTrack(htmlTrackElement.track);\n\n      if (manualCleanup !== true) {\n        // create the TextTrackList if it doesn't exist\n        this.ready(function () {\n          return _this7.autoRemoteTextTracks_.addTrack(htmlTrackElement.track);\n        });\n      }\n\n      return htmlTrackElement;\n    }\n    /**\n     * Remove a remote text track from the remote `TextTrackList`.\n     *\n     * @param {TextTrack} track\n     *        `TextTrack` to remove from the `TextTrackList`\n     */\n    ;\n\n    _proto.removeRemoteTextTrack = function removeRemoteTextTrack(track) {\n      var trackElement = this.remoteTextTrackEls().getTrackElementByTrack_(track); // remove HTMLTrackElement and TextTrack from remote list\n\n      this.remoteTextTrackEls().removeTrackElement_(trackElement);\n      this.remoteTextTracks().removeTrack(track);\n      this.autoRemoteTextTracks_.removeTrack(track);\n    }\n    /**\n     * Gets available media playback quality metrics as specified by the W3C's Media\n     * Playback Quality API.\n     *\n     * @see [Spec]{@link https://wicg.github.io/media-playback-quality}\n     *\n     * @return {Object}\n     *         An object with supported media playback quality metrics\n     *\n     * @abstract\n     */\n    ;\n\n    _proto.getVideoPlaybackQuality = function getVideoPlaybackQuality() {\n      return {};\n    }\n    /**\n     * A method to set a poster from a `Tech`.\n     *\n     * @abstract\n     */\n    ;\n\n    _proto.setPoster = function setPoster() {}\n    /**\n     * A method to check for the presence of the 'playsinline' <video> attribute.\n     *\n     * @abstract\n     */\n    ;\n\n    _proto.playsinline = function playsinline() {}\n    /**\n     * A method to set or unset the 'playsinline' <video> attribute.\n     *\n     * @abstract\n     */\n    ;\n\n    _proto.setPlaysinline = function setPlaysinline() {}\n    /**\n     * Attempt to force override of native audio tracks.\n     *\n     * @param {boolean} override - If set to true native audio will be overridden,\n     * otherwise native audio will potentially be used.\n     *\n     * @abstract\n     */\n    ;\n\n    _proto.overrideNativeAudioTracks = function overrideNativeAudioTracks() {}\n    /**\n     * Attempt to force override of native video tracks.\n     *\n     * @param {boolean} override - If set to true native video will be overridden,\n     * otherwise native video will potentially be used.\n     *\n     * @abstract\n     */\n    ;\n\n    _proto.overrideNativeVideoTracks = function overrideNativeVideoTracks() {}\n    /*\n     * Check if the tech can support the given mime-type.\n     *\n     * The base tech does not support any type, but source handlers might\n     * overwrite this.\n     *\n     * @param  {string} type\n     *         The mimetype to check for support\n     *\n     * @return {string}\n     *         'probably', 'maybe', or empty string\n     *\n     * @see [Spec]{@link https://developer.mozilla.org/en-US/docs/Web/API/HTMLMediaElement/canPlayType}\n     *\n     * @abstract\n     */\n    ;\n\n    _proto.canPlayType = function canPlayType() {\n      return '';\n    }\n    /**\n     * Check if the type is supported by this tech.\n     *\n     * The base tech does not support any type, but source handlers might\n     * overwrite this.\n     *\n     * @param {string} type\n     *        The media type to check\n     * @return {string} Returns the native video element's response\n     */\n    ;\n\n    Tech.canPlayType = function canPlayType() {\n      return '';\n    }\n    /**\n     * Check if the tech can support the given source\n     *\n     * @param {Object} srcObj\n     *        The source object\n     * @param {Object} options\n     *        The options passed to the tech\n     * @return {string} 'probably', 'maybe', or '' (empty string)\n     */\n    ;\n\n    Tech.canPlaySource = function canPlaySource(srcObj, options) {\n      return Tech.canPlayType(srcObj.type);\n    }\n    /*\n     * Return whether the argument is a Tech or not.\n     * Can be passed either a Class like `Html5` or a instance like `player.tech_`\n     *\n     * @param {Object} component\n     *        The item to check\n     *\n     * @return {boolean}\n     *         Whether it is a tech or not\n     *         - True if it is a tech\n     *         - False if it is not\n     */\n    ;\n\n    Tech.isTech = function isTech(component) {\n      return component.prototype instanceof Tech || component instanceof Tech || component === Tech;\n    }\n    /**\n     * Registers a `Tech` into a shared list for videojs.\n     *\n     * @param {string} name\n     *        Name of the `Tech` to register.\n     *\n     * @param {Object} tech\n     *        The `Tech` class to register.\n     */\n    ;\n\n    Tech.registerTech = function registerTech(name, tech) {\n      if (!Tech.techs_) {\n        Tech.techs_ = {};\n      }\n\n      if (!Tech.isTech(tech)) {\n        throw new Error(\"Tech \" + name + \" must be a Tech\");\n      }\n\n      if (!Tech.canPlayType) {\n        throw new Error('Techs must have a static canPlayType method on them');\n      }\n\n      if (!Tech.canPlaySource) {\n        throw new Error('Techs must have a static canPlaySource method on them');\n      }\n\n      name = toTitleCase(name);\n      Tech.techs_[name] = tech;\n\n      if (name !== 'Tech') {\n        // camel case the techName for use in techOrder\n        Tech.defaultTechOrder_.push(name);\n      }\n\n      return tech;\n    }\n    /**\n     * Get a `Tech` from the shared list by name.\n     *\n     * @param {string} name\n     *        `camelCase` or `TitleCase` name of the Tech to get\n     *\n     * @return {Tech|undefined}\n     *         The `Tech` or undefined if there was no tech with the name requested.\n     */\n    ;\n\n    Tech.getTech = function getTech(name) {\n      if (!name) {\n        return;\n      }\n\n      name = toTitleCase(name);\n\n      if (Tech.techs_ && Tech.techs_[name]) {\n        return Tech.techs_[name];\n      }\n\n      if (window$1 && window$1.videojs && window$1.videojs[name]) {\n        log.warn(\"The \" + name + \" tech was added to the videojs object when it should be registered using videojs.registerTech(name, tech)\");\n        return window$1.videojs[name];\n      }\n    };\n\n    return Tech;\n  }(Component);\n  /**\n   * Get the {@link VideoTrackList}\n   *\n   * @returns {VideoTrackList}\n   * @method Tech.prototype.videoTracks\n   */\n\n  /**\n   * Get the {@link AudioTrackList}\n   *\n   * @returns {AudioTrackList}\n   * @method Tech.prototype.audioTracks\n   */\n\n  /**\n   * Get the {@link TextTrackList}\n   *\n   * @returns {TextTrackList}\n   * @method Tech.prototype.textTracks\n   */\n\n  /**\n   * Get the remote element {@link TextTrackList}\n   *\n   * @returns {TextTrackList}\n   * @method Tech.prototype.remoteTextTracks\n   */\n\n  /**\n   * Get the remote element {@link HtmlTrackElementList}\n   *\n   * @returns {HtmlTrackElementList}\n   * @method Tech.prototype.remoteTextTrackEls\n   */\n\n\n  ALL.names.forEach(function (name) {\n    var props = ALL[name];\n\n    Tech.prototype[props.getterName] = function () {\n      this[props.privateName] = this[props.privateName] || new props.ListClass();\n      return this[props.privateName];\n    };\n  });\n  /**\n   * List of associated text tracks\n   *\n   * @type {TextTrackList}\n   * @private\n   * @property Tech#textTracks_\n   */\n\n  /**\n   * List of associated audio tracks.\n   *\n   * @type {AudioTrackList}\n   * @private\n   * @property Tech#audioTracks_\n   */\n\n  /**\n   * List of associated video tracks.\n   *\n   * @type {VideoTrackList}\n   * @private\n   * @property Tech#videoTracks_\n   */\n\n  /**\n   * Boolean indicating whether the `Tech` supports volume control.\n   *\n   * @type {boolean}\n   * @default\n   */\n\n  Tech.prototype.featuresVolumeControl = true;\n  /**\n   * Boolean indicating whether the `Tech` supports muting volume.\n   *\n   * @type {bolean}\n   * @default\n   */\n\n  Tech.prototype.featuresMuteControl = true;\n  /**\n   * Boolean indicating whether the `Tech` supports fullscreen resize control.\n   * Resizing plugins using request fullscreen reloads the plugin\n   *\n   * @type {boolean}\n   * @default\n   */\n\n  Tech.prototype.featuresFullscreenResize = false;\n  /**\n   * Boolean indicating whether the `Tech` supports changing the speed at which the video\n   * plays. Examples:\n   *   - Set player to play 2x (twice) as fast\n   *   - Set player to play 0.5x (half) as fast\n   *\n   * @type {boolean}\n   * @default\n   */\n\n  Tech.prototype.featuresPlaybackRate = false;\n  /**\n   * Boolean indicating whether the `Tech` supports the `progress` event. This is currently\n   * not triggered by video-js-swf. This will be used to determine if\n   * {@link Tech#manualProgressOn} should be called.\n   *\n   * @type {boolean}\n   * @default\n   */\n\n  Tech.prototype.featuresProgressEvents = false;\n  /**\n   * Boolean indicating whether the `Tech` supports the `sourceset` event.\n   *\n   * A tech should set this to `true` and then use {@link Tech#triggerSourceset}\n   * to trigger a {@link Tech#event:sourceset} at the earliest time after getting\n   * a new source.\n   *\n   * @type {boolean}\n   * @default\n   */\n\n  Tech.prototype.featuresSourceset = false;\n  /**\n   * Boolean indicating whether the `Tech` supports the `timeupdate` event. This is currently\n   * not triggered by video-js-swf. This will be used to determine if\n   * {@link Tech#manualTimeUpdates} should be called.\n   *\n   * @type {boolean}\n   * @default\n   */\n\n  Tech.prototype.featuresTimeupdateEvents = false;\n  /**\n   * Boolean indicating whether the `Tech` supports the native `TextTrack`s.\n   * This will help us integrate with native `TextTrack`s if the browser supports them.\n   *\n   * @type {boolean}\n   * @default\n   */\n\n  Tech.prototype.featuresNativeTextTracks = false;\n  /**\n   * A functional mixin for techs that want to use the Source Handler pattern.\n   * Source handlers are scripts for handling specific formats.\n   * The source handler pattern is used for adaptive formats (HLS, DASH) that\n   * manually load video data and feed it into a Source Buffer (Media Source Extensions)\n   * Example: `Tech.withSourceHandlers.call(MyTech);`\n   *\n   * @param {Tech} _Tech\n   *        The tech to add source handler functions to.\n   *\n   * @mixes Tech~SourceHandlerAdditions\n   */\n\n  Tech.withSourceHandlers = function (_Tech) {\n    /**\n     * Register a source handler\n     *\n     * @param {Function} handler\n     *        The source handler class\n     *\n     * @param {number} [index]\n     *        Register it at the following index\n     */\n    _Tech.registerSourceHandler = function (handler, index) {\n      var handlers = _Tech.sourceHandlers;\n\n      if (!handlers) {\n        handlers = _Tech.sourceHandlers = [];\n      }\n\n      if (index === undefined) {\n        // add to the end of the list\n        index = handlers.length;\n      }\n\n      handlers.splice(index, 0, handler);\n    };\n    /**\n     * Check if the tech can support the given type. Also checks the\n     * Techs sourceHandlers.\n     *\n     * @param {string} type\n     *         The mimetype to check.\n     *\n     * @return {string}\n     *         'probably', 'maybe', or '' (empty string)\n     */\n\n\n    _Tech.canPlayType = function (type) {\n      var handlers = _Tech.sourceHandlers || [];\n      var can;\n\n      for (var i = 0; i < handlers.length; i++) {\n        can = handlers[i].canPlayType(type);\n\n        if (can) {\n          return can;\n        }\n      }\n\n      return '';\n    };\n    /**\n     * Returns the first source handler that supports the source.\n     *\n     * TODO: Answer question: should 'probably' be prioritized over 'maybe'\n     *\n     * @param {Tech~SourceObject} source\n     *        The source object\n     *\n     * @param {Object} options\n     *        The options passed to the tech\n     *\n     * @return {SourceHandler|null}\n     *          The first source handler that supports the source or null if\n     *          no SourceHandler supports the source\n     */\n\n\n    _Tech.selectSourceHandler = function (source, options) {\n      var handlers = _Tech.sourceHandlers || [];\n      var can;\n\n      for (var i = 0; i < handlers.length; i++) {\n        can = handlers[i].canHandleSource(source, options);\n\n        if (can) {\n          return handlers[i];\n        }\n      }\n\n      return null;\n    };\n    /**\n     * Check if the tech can support the given source.\n     *\n     * @param {Tech~SourceObject} srcObj\n     *        The source object\n     *\n     * @param {Object} options\n     *        The options passed to the tech\n     *\n     * @return {string}\n     *         'probably', 'maybe', or '' (empty string)\n     */\n\n\n    _Tech.canPlaySource = function (srcObj, options) {\n      var sh = _Tech.selectSourceHandler(srcObj, options);\n\n      if (sh) {\n        return sh.canHandleSource(srcObj, options);\n      }\n\n      return '';\n    };\n    /**\n     * When using a source handler, prefer its implementation of\n     * any function normally provided by the tech.\n     */\n\n\n    var deferrable = ['seekable', 'seeking', 'duration'];\n    /**\n     * A wrapper around {@link Tech#seekable} that will call a `SourceHandler`s seekable\n     * function if it exists, with a fallback to the Techs seekable function.\n     *\n     * @method _Tech.seekable\n     */\n\n    /**\n     * A wrapper around {@link Tech#duration} that will call a `SourceHandler`s duration\n     * function if it exists, otherwise it will fallback to the techs duration function.\n     *\n     * @method _Tech.duration\n     */\n\n    deferrable.forEach(function (fnName) {\n      var originalFn = this[fnName];\n\n      if (typeof originalFn !== 'function') {\n        return;\n      }\n\n      this[fnName] = function () {\n        if (this.sourceHandler_ && this.sourceHandler_[fnName]) {\n          return this.sourceHandler_[fnName].apply(this.sourceHandler_, arguments);\n        }\n\n        return originalFn.apply(this, arguments);\n      };\n    }, _Tech.prototype);\n    /**\n     * Create a function for setting the source using a source object\n     * and source handlers.\n     * Should never be called unless a source handler was found.\n     *\n     * @param {Tech~SourceObject} source\n     *        A source object with src and type keys\n     */\n\n    _Tech.prototype.setSource = function (source) {\n      var sh = _Tech.selectSourceHandler(source, this.options_);\n\n      if (!sh) {\n        // Fall back to a native source hander when unsupported sources are\n        // deliberately set\n        if (_Tech.nativeSourceHandler) {\n          sh = _Tech.nativeSourceHandler;\n        } else {\n          log.error('No source handler found for the current source.');\n        }\n      } // Dispose any existing source handler\n\n\n      this.disposeSourceHandler();\n      this.off('dispose', this.disposeSourceHandler);\n\n      if (sh !== _Tech.nativeSourceHandler) {\n        this.currentSource_ = source;\n      }\n\n      this.sourceHandler_ = sh.handleSource(source, this, this.options_);\n      this.on('dispose', this.disposeSourceHandler);\n    };\n    /**\n     * Clean up any existing SourceHandlers and listeners when the Tech is disposed.\n     *\n     * @listens Tech#dispose\n     */\n\n\n    _Tech.prototype.disposeSourceHandler = function () {\n      // if we have a source and get another one\n      // then we are loading something new\n      // than clear all of our current tracks\n      if (this.currentSource_) {\n        this.clearTracks(['audio', 'video']);\n        this.currentSource_ = null;\n      } // always clean up auto-text tracks\n\n\n      this.cleanupAutoTextTracks();\n\n      if (this.sourceHandler_) {\n        if (this.sourceHandler_.dispose) {\n          this.sourceHandler_.dispose();\n        }\n\n        this.sourceHandler_ = null;\n      }\n    };\n  }; // The base Tech class needs to be registered as a Component. It is the only\n  // Tech that can be registered as a Component.\n\n\n  Component.registerComponent('Tech', Tech);\n  Tech.registerTech('Tech', Tech);\n  /**\n   * A list of techs that should be added to techOrder on Players\n   *\n   * @private\n   */\n\n  Tech.defaultTechOrder_ = [];\n\n  /**\n   * @file middleware.js\n   * @module middleware\n   */\n  var middlewares = {};\n  var middlewareInstances = {};\n  var TERMINATOR = {};\n  /**\n   * A middleware object is a plain JavaScript object that has methods that\n   * match the {@link Tech} methods found in the lists of allowed\n   * {@link module:middleware.allowedGetters|getters},\n   * {@link module:middleware.allowedSetters|setters}, and\n   * {@link module:middleware.allowedMediators|mediators}.\n   *\n   * @typedef {Object} MiddlewareObject\n   */\n\n  /**\n   * A middleware factory function that should return a\n   * {@link module:middleware~MiddlewareObject|MiddlewareObject}.\n   *\n   * This factory will be called for each player when needed, with the player\n   * passed in as an argument.\n   *\n   * @callback MiddlewareFactory\n   * @param {Player} player\n   *        A Video.js player.\n   */\n\n  /**\n   * Define a middleware that the player should use by way of a factory function\n   * that returns a middleware object.\n   *\n   * @param  {string} type\n   *         The MIME type to match or `\"*\"` for all MIME types.\n   *\n   * @param  {MiddlewareFactory} middleware\n   *         A middleware factory function that will be executed for\n   *         matching types.\n   */\n\n  function use(type, middleware) {\n    middlewares[type] = middlewares[type] || [];\n    middlewares[type].push(middleware);\n  }\n  /**\n   * Asynchronously sets a source using middleware by recursing through any\n   * matching middlewares and calling `setSource` on each, passing along the\n   * previous returned value each time.\n   *\n   * @param  {Player} player\n   *         A {@link Player} instance.\n   *\n   * @param  {Tech~SourceObject} src\n   *         A source object.\n   *\n   * @param  {Function}\n   *         The next middleware to run.\n   */\n\n  function setSource(player, src, next) {\n    player.setTimeout(function () {\n      return setSourceHelper(src, middlewares[src.type], next, player);\n    }, 1);\n  }\n  /**\n   * When the tech is set, passes the tech to each middleware's `setTech` method.\n   *\n   * @param {Object[]} middleware\n   *        An array of middleware instances.\n   *\n   * @param {Tech} tech\n   *        A Video.js tech.\n   */\n\n  function setTech(middleware, tech) {\n    middleware.forEach(function (mw) {\n      return mw.setTech && mw.setTech(tech);\n    });\n  }\n  /**\n   * Calls a getter on the tech first, through each middleware\n   * from right to left to the player.\n   *\n   * @param  {Object[]} middleware\n   *         An array of middleware instances.\n   *\n   * @param  {Tech} tech\n   *         The current tech.\n   *\n   * @param  {string} method\n   *         A method name.\n   *\n   * @return {Mixed}\n   *         The final value from the tech after middleware has intercepted it.\n   */\n\n  function get(middleware, tech, method) {\n    return middleware.reduceRight(middlewareIterator(method), tech[method]());\n  }\n  /**\n   * Takes the argument given to the player and calls the setter method on each\n   * middleware from left to right to the tech.\n   *\n   * @param  {Object[]} middleware\n   *         An array of middleware instances.\n   *\n   * @param  {Tech} tech\n   *         The current tech.\n   *\n   * @param  {string} method\n   *         A method name.\n   *\n   * @param  {Mixed} arg\n   *         The value to set on the tech.\n   *\n   * @return {Mixed}\n   *         The return value of the `method` of the `tech`.\n   */\n\n  function set$1(middleware, tech, method, arg) {\n    return tech[method](middleware.reduce(middlewareIterator(method), arg));\n  }\n  /**\n   * Takes the argument given to the player and calls the `call` version of the\n   * method on each middleware from left to right.\n   *\n   * Then, call the passed in method on the tech and return the result unchanged\n   * back to the player, through middleware, this time from right to left.\n   *\n   * @param  {Object[]} middleware\n   *         An array of middleware instances.\n   *\n   * @param  {Tech} tech\n   *         The current tech.\n   *\n   * @param  {string} method\n   *         A method name.\n   *\n   * @param  {Mixed} arg\n   *         The value to set on the tech.\n   *\n   * @return {Mixed}\n   *         The return value of the `method` of the `tech`, regardless of the\n   *         return values of middlewares.\n   */\n\n  function mediate(middleware, tech, method, arg) {\n    if (arg === void 0) {\n      arg = null;\n    }\n\n    var callMethod = 'call' + toTitleCase(method);\n    var middlewareValue = middleware.reduce(middlewareIterator(callMethod), arg);\n    var terminated = middlewareValue === TERMINATOR;\n    var returnValue = terminated ? null : tech[method](middlewareValue);\n    executeRight(middleware, method, returnValue, terminated);\n    return returnValue;\n  }\n  /**\n   * Enumeration of allowed getters where the keys are method names.\n   *\n   * @type {Object}\n   */\n\n  var allowedGetters = {\n    buffered: 1,\n    currentTime: 1,\n    duration: 1,\n    seekable: 1,\n    played: 1,\n    paused: 1\n  };\n  /**\n   * Enumeration of allowed setters where the keys are method names.\n   *\n   * @type {Object}\n   */\n\n  var allowedSetters = {\n    setCurrentTime: 1\n  };\n  /**\n   * Enumeration of allowed mediators where the keys are method names.\n   *\n   * @type {Object}\n   */\n\n  var allowedMediators = {\n    play: 1,\n    pause: 1\n  };\n\n  function middlewareIterator(method) {\n    return function (value, mw) {\n      // if the previous middleware terminated, pass along the termination\n      if (value === TERMINATOR) {\n        return TERMINATOR;\n      }\n\n      if (mw[method]) {\n        return mw[method](value);\n      }\n\n      return value;\n    };\n  }\n\n  function executeRight(mws, method, value, terminated) {\n    for (var i = mws.length - 1; i >= 0; i--) {\n      var mw = mws[i];\n\n      if (mw[method]) {\n        mw[method](terminated, value);\n      }\n    }\n  }\n  /**\n   * Clear the middleware cache for a player.\n   *\n   * @param  {Player} player\n   *         A {@link Player} instance.\n   */\n\n\n  function clearCacheForPlayer(player) {\n    middlewareInstances[player.id()] = null;\n  }\n  /**\n   * {\n   *  [playerId]: [[mwFactory, mwInstance], ...]\n   * }\n   *\n   * @private\n   */\n\n  function getOrCreateFactory(player, mwFactory) {\n    var mws = middlewareInstances[player.id()];\n    var mw = null;\n\n    if (mws === undefined || mws === null) {\n      mw = mwFactory(player);\n      middlewareInstances[player.id()] = [[mwFactory, mw]];\n      return mw;\n    }\n\n    for (var i = 0; i < mws.length; i++) {\n      var _mws$i = mws[i],\n          mwf = _mws$i[0],\n          mwi = _mws$i[1];\n\n      if (mwf !== mwFactory) {\n        continue;\n      }\n\n      mw = mwi;\n    }\n\n    if (mw === null) {\n      mw = mwFactory(player);\n      mws.push([mwFactory, mw]);\n    }\n\n    return mw;\n  }\n\n  function setSourceHelper(src, middleware, next, player, acc, lastRun) {\n    if (src === void 0) {\n      src = {};\n    }\n\n    if (middleware === void 0) {\n      middleware = [];\n    }\n\n    if (acc === void 0) {\n      acc = [];\n    }\n\n    if (lastRun === void 0) {\n      lastRun = false;\n    }\n\n    var _middleware = middleware,\n        mwFactory = _middleware[0],\n        mwrest = _middleware.slice(1); // if mwFactory is a string, then we're at a fork in the road\n\n\n    if (typeof mwFactory === 'string') {\n      setSourceHelper(src, middlewares[mwFactory], next, player, acc, lastRun); // if we have an mwFactory, call it with the player to get the mw,\n      // then call the mw's setSource method\n    } else if (mwFactory) {\n      var mw = getOrCreateFactory(player, mwFactory); // if setSource isn't present, implicitly select this middleware\n\n      if (!mw.setSource) {\n        acc.push(mw);\n        return setSourceHelper(src, mwrest, next, player, acc, lastRun);\n      }\n\n      mw.setSource(assign({}, src), function (err, _src) {\n        // something happened, try the next middleware on the current level\n        // make sure to use the old src\n        if (err) {\n          return setSourceHelper(src, mwrest, next, player, acc, lastRun);\n        } // we've succeeded, now we need to go deeper\n\n\n        acc.push(mw); // if it's the same type, continue down the current chain\n        // otherwise, we want to go down the new chain\n\n        setSourceHelper(_src, src.type === _src.type ? mwrest : middlewares[_src.type], next, player, acc, lastRun);\n      });\n    } else if (mwrest.length) {\n      setSourceHelper(src, mwrest, next, player, acc, lastRun);\n    } else if (lastRun) {\n      next(src, acc);\n    } else {\n      setSourceHelper(src, middlewares['*'], next, player, acc, true);\n    }\n  }\n\n  /**\n   * Mimetypes\n   *\n   * @see http://hul.harvard.edu/ois/////systems/wax/wax-public-help/mimetypes.htm\n   * @typedef Mimetypes~Kind\n   * @enum\n   */\n\n  var MimetypesKind = {\n    opus: 'video/ogg',\n    ogv: 'video/ogg',\n    mp4: 'video/mp4',\n    mov: 'video/mp4',\n    m4v: 'video/mp4',\n    mkv: 'video/x-matroska',\n    mp3: 'audio/mpeg',\n    aac: 'audio/aac',\n    oga: 'audio/ogg',\n    m3u8: 'application/x-mpegURL',\n    jpg: 'image/jpeg',\n    jpeg: 'image/jpeg',\n    gif: 'image/gif',\n    png: 'image/png',\n    svg: 'image/svg+xml',\n    webp: 'image/webp'\n  };\n  /**\n   * Get the mimetype of a given src url if possible\n   *\n   * @param {string} src\n   *        The url to the src\n   *\n   * @return {string}\n   *         return the mimetype if it was known or empty string otherwise\n   */\n\n  var getMimetype = function getMimetype(src) {\n    if (src === void 0) {\n      src = '';\n    }\n\n    var ext = getFileExtension(src);\n    var mimetype = MimetypesKind[ext.toLowerCase()];\n    return mimetype || '';\n  };\n  /**\n   * Find the mime type of a given source string if possible. Uses the player\n   * source cache.\n   *\n   * @param {Player} player\n   *        The player object\n   *\n   * @param {string} src\n   *        The source string\n   *\n   * @return {string}\n   *         The type that was found\n   */\n\n  var findMimetype = function findMimetype(player, src) {\n    if (!src) {\n      return '';\n    } // 1. check for the type in the `source` cache\n\n\n    if (player.cache_.source.src === src && player.cache_.source.type) {\n      return player.cache_.source.type;\n    } // 2. see if we have this source in our `currentSources` cache\n\n\n    var matchingSources = player.cache_.sources.filter(function (s) {\n      return s.src === src;\n    });\n\n    if (matchingSources.length) {\n      return matchingSources[0].type;\n    } // 3. look for the src url in source elements and use the type there\n\n\n    var sources = player.$$('source');\n\n    for (var i = 0; i < sources.length; i++) {\n      var s = sources[i];\n\n      if (s.type && s.src && s.src === src) {\n        return s.type;\n      }\n    } // 4. finally fallback to our list of mime types based on src url extension\n\n\n    return getMimetype(src);\n  };\n\n  /**\n   * @module filter-source\n   */\n  /**\n   * Filter out single bad source objects or multiple source objects in an\n   * array. Also flattens nested source object arrays into a 1 dimensional\n   * array of source objects.\n   *\n   * @param {Tech~SourceObject|Tech~SourceObject[]} src\n   *        The src object to filter\n   *\n   * @return {Tech~SourceObject[]}\n   *         An array of sourceobjects containing only valid sources\n   *\n   * @private\n   */\n\n  var filterSource = function filterSource(src) {\n    // traverse array\n    if (Array.isArray(src)) {\n      var newsrc = [];\n      src.forEach(function (srcobj) {\n        srcobj = filterSource(srcobj);\n\n        if (Array.isArray(srcobj)) {\n          newsrc = newsrc.concat(srcobj);\n        } else if (isObject(srcobj)) {\n          newsrc.push(srcobj);\n        }\n      });\n      src = newsrc;\n    } else if (typeof src === 'string' && src.trim()) {\n      // convert string into object\n      src = [fixSource({\n        src: src\n      })];\n    } else if (isObject(src) && typeof src.src === 'string' && src.src && src.src.trim()) {\n      // src is already valid\n      src = [fixSource(src)];\n    } else {\n      // invalid source, turn it into an empty array\n      src = [];\n    }\n\n    return src;\n  };\n  /**\n   * Checks src mimetype, adding it when possible\n   *\n   * @param {Tech~SourceObject} src\n   *        The src object to check\n   * @return {Tech~SourceObject}\n   *        src Object with known type\n   */\n\n\n  function fixSource(src) {\n    var mimetype = getMimetype(src.src);\n\n    if (!src.type && mimetype) {\n      src.type = mimetype;\n    }\n\n    return src;\n  }\n\n  /**\n   * The `MediaLoader` is the `Component` that decides which playback technology to load\n   * when a player is initialized.\n   *\n   * @extends Component\n   */\n\n  var MediaLoader =\n  /*#__PURE__*/\n  function (_Component) {\n    _inheritsLoose(MediaLoader, _Component);\n\n    /**\n     * Create an instance of this class.\n     *\n     * @param {Player} player\n     *        The `Player` that this class should attach to.\n     *\n     * @param {Object} [options]\n     *        The key/value store of player options.\n     *\n     * @param {Component~ReadyCallback} [ready]\n     *        The function that is run when this component is ready.\n     */\n    function MediaLoader(player, options, ready) {\n      var _this;\n\n      // MediaLoader has no element\n      var options_ = mergeOptions({\n        createEl: false\n      }, options);\n      _this = _Component.call(this, player, options_, ready) || this; // If there are no sources when the player is initialized,\n      // load the first supported playback technology.\n\n      if (!options.playerOptions.sources || options.playerOptions.sources.length === 0) {\n        for (var i = 0, j = options.playerOptions.techOrder; i < j.length; i++) {\n          var techName = toTitleCase(j[i]);\n          var tech = Tech.getTech(techName); // Support old behavior of techs being registered as components.\n          // Remove once that deprecated behavior is removed.\n\n          if (!techName) {\n            tech = Component.getComponent(techName);\n          } // Check if the browser supports this technology\n\n\n          if (tech && tech.isSupported()) {\n            player.loadTech_(techName);\n            break;\n          }\n        }\n      } else {\n        // Loop through playback technologies (HTML5, Flash) and check for support.\n        // Then load the best source.\n        // A few assumptions here:\n        //   All playback technologies respect preload false.\n        player.src(options.playerOptions.sources);\n      }\n\n      return _this;\n    }\n\n    return MediaLoader;\n  }(Component);\n\n  Component.registerComponent('MediaLoader', MediaLoader);\n\n  /**\n   * Clickable Component which is clickable or keyboard actionable,\n   * but is not a native HTML button.\n   *\n   * @extends Component\n   */\n\n  var ClickableComponent =\n  /*#__PURE__*/\n  function (_Component) {\n    _inheritsLoose(ClickableComponent, _Component);\n\n    /**\n     * Creates an instance of this class.\n     *\n     * @param  {Player} player\n     *         The `Player` that this class should be attached to.\n     *\n     * @param  {Object} [options]\n     *         The key/value store of player options.\n     */\n    function ClickableComponent(player, options) {\n      var _this;\n\n      _this = _Component.call(this, player, options) || this;\n\n      _this.emitTapEvents();\n\n      _this.enable();\n\n      return _this;\n    }\n    /**\n     * Create the `Component`s DOM element.\n     *\n     * @param {string} [tag=div]\n     *        The element's node type.\n     *\n     * @param {Object} [props={}]\n     *        An object of properties that should be set on the element.\n     *\n     * @param {Object} [attributes={}]\n     *        An object of attributes that should be set on the element.\n     *\n     * @return {Element}\n     *         The element that gets created.\n     */\n\n\n    var _proto = ClickableComponent.prototype;\n\n    _proto.createEl = function createEl$$1(tag, props, attributes) {\n      if (tag === void 0) {\n        tag = 'div';\n      }\n\n      if (props === void 0) {\n        props = {};\n      }\n\n      if (attributes === void 0) {\n        attributes = {};\n      }\n\n      props = assign({\n        innerHTML: '<span aria-hidden=\"true\" class=\"vjs-icon-placeholder\"></span>',\n        className: this.buildCSSClass(),\n        tabIndex: 0\n      }, props);\n\n      if (tag === 'button') {\n        log.error(\"Creating a ClickableComponent with an HTML element of \" + tag + \" is not supported; use a Button instead.\");\n      } // Add ARIA attributes for clickable element which is not a native HTML button\n\n\n      attributes = assign({\n        role: 'button'\n      }, attributes);\n      this.tabIndex_ = props.tabIndex;\n\n      var el = _Component.prototype.createEl.call(this, tag, props, attributes);\n\n      this.createControlTextEl(el);\n      return el;\n    };\n\n    _proto.dispose = function dispose() {\n      // remove controlTextEl_ on dispose\n      this.controlTextEl_ = null;\n\n      _Component.prototype.dispose.call(this);\n    }\n    /**\n     * Create a control text element on this `Component`\n     *\n     * @param {Element} [el]\n     *        Parent element for the control text.\n     *\n     * @return {Element}\n     *         The control text element that gets created.\n     */\n    ;\n\n    _proto.createControlTextEl = function createControlTextEl(el) {\n      this.controlTextEl_ = createEl('span', {\n        className: 'vjs-control-text'\n      }, {\n        // let the screen reader user know that the text of the element may change\n        'aria-live': 'polite'\n      });\n\n      if (el) {\n        el.appendChild(this.controlTextEl_);\n      }\n\n      this.controlText(this.controlText_, el);\n      return this.controlTextEl_;\n    }\n    /**\n     * Get or set the localize text to use for the controls on the `Component`.\n     *\n     * @param {string} [text]\n     *        Control text for element.\n     *\n     * @param {Element} [el=this.el()]\n     *        Element to set the title on.\n     *\n     * @return {string}\n     *         - The control text when getting\n     */\n    ;\n\n    _proto.controlText = function controlText(text, el) {\n      if (el === void 0) {\n        el = this.el();\n      }\n\n      if (text === undefined) {\n        return this.controlText_ || 'Need Text';\n      }\n\n      var localizedText = this.localize(text);\n      this.controlText_ = text;\n      textContent(this.controlTextEl_, localizedText);\n\n      if (!this.nonIconControl) {\n        // Set title attribute if only an icon is shown\n        el.setAttribute('title', localizedText);\n      }\n    }\n    /**\n     * Builds the default DOM `className`.\n     *\n     * @return {string}\n     *         The DOM `className` for this object.\n     */\n    ;\n\n    _proto.buildCSSClass = function buildCSSClass() {\n      return \"vjs-control vjs-button \" + _Component.prototype.buildCSSClass.call(this);\n    }\n    /**\n     * Enable this `Component`s element.\n     */\n    ;\n\n    _proto.enable = function enable() {\n      if (!this.enabled_) {\n        this.enabled_ = true;\n        this.removeClass('vjs-disabled');\n        this.el_.setAttribute('aria-disabled', 'false');\n\n        if (typeof this.tabIndex_ !== 'undefined') {\n          this.el_.setAttribute('tabIndex', this.tabIndex_);\n        }\n\n        this.on(['tap', 'click'], this.handleClick);\n        this.on('focus', this.handleFocus);\n        this.on('blur', this.handleBlur);\n      }\n    }\n    /**\n     * Disable this `Component`s element.\n     */\n    ;\n\n    _proto.disable = function disable() {\n      this.enabled_ = false;\n      this.addClass('vjs-disabled');\n      this.el_.setAttribute('aria-disabled', 'true');\n\n      if (typeof this.tabIndex_ !== 'undefined') {\n        this.el_.removeAttribute('tabIndex');\n      }\n\n      this.off(['tap', 'click'], this.handleClick);\n      this.off('focus', this.handleFocus);\n      this.off('blur', this.handleBlur);\n    }\n    /**\n     * This gets called when a `ClickableComponent` gets:\n     * - Clicked (via the `click` event, listening starts in the constructor)\n     * - Tapped (via the `tap` event, listening starts in the constructor)\n     * - The following things happen in order:\n     *   1. {@link ClickableComponent#handleFocus} is called via a `focus` event on the\n     *      `ClickableComponent`.\n     *   2. {@link ClickableComponent#handleFocus} adds a listener for `keydown` on using\n     *      {@link ClickableComponent#handleKeyPress}.\n     *   3. `ClickableComponent` has not had a `blur` event (`blur` means that focus was lost). The user presses\n     *      the space or enter key.\n     *   4. {@link ClickableComponent#handleKeyPress} calls this function with the `keydown`\n     *      event as a parameter.\n     *\n     * @param {EventTarget~Event} event\n     *        The `keydown`, `tap`, or `click` event that caused this function to be\n     *        called.\n     *\n     * @listens tap\n     * @listens click\n     * @abstract\n     */\n    ;\n\n    _proto.handleClick = function handleClick(event) {}\n    /**\n     * This gets called when a `ClickableComponent` gains focus via a `focus` event.\n     * Turns on listening for `keydown` events. When they happen it\n     * calls `this.handleKeyPress`.\n     *\n     * @param {EventTarget~Event} event\n     *        The `focus` event that caused this function to be called.\n     *\n     * @listens focus\n     */\n    ;\n\n    _proto.handleFocus = function handleFocus(event) {\n      on(document, 'keydown', bind(this, this.handleKeyPress));\n    }\n    /**\n     * Called when this ClickableComponent has focus and a key gets pressed down. By\n     * default it will call `this.handleClick` when the key is space or enter.\n     *\n     * @param {EventTarget~Event} event\n     *        The `keydown` event that caused this function to be called.\n     *\n     * @listens keydown\n     */\n    ;\n\n    _proto.handleKeyPress = function handleKeyPress(event) {\n      // Support Space or Enter key operation to fire a click event\n      if (keycode.isEventKey(event, 'Space') || keycode.isEventKey(event, 'Enter')) {\n        event.preventDefault();\n        this.trigger('click');\n      } else {\n        // Pass keypress handling up for unsupported keys\n        _Component.prototype.handleKeyPress.call(this, event);\n      }\n    }\n    /**\n     * Called when a `ClickableComponent` loses focus. Turns off the listener for\n     * `keydown` events. Which Stops `this.handleKeyPress` from getting called.\n     *\n     * @param {EventTarget~Event} event\n     *        The `blur` event that caused this function to be called.\n     *\n     * @listens blur\n     */\n    ;\n\n    _proto.handleBlur = function handleBlur(event) {\n      off(document, 'keydown', bind(this, this.handleKeyPress));\n    };\n\n    return ClickableComponent;\n  }(Component);\n\n  Component.registerComponent('ClickableComponent', ClickableComponent);\n\n  /**\n   * A `ClickableComponent` that handles showing the poster image for the player.\n   *\n   * @extends ClickableComponent\n   */\n\n  var PosterImage =\n  /*#__PURE__*/\n  function (_ClickableComponent) {\n    _inheritsLoose(PosterImage, _ClickableComponent);\n\n    /**\n     * Create an instance of this class.\n     *\n     * @param {Player} player\n     *        The `Player` that this class should attach to.\n     *\n     * @param {Object} [options]\n     *        The key/value store of player options.\n     */\n    function PosterImage(player, options) {\n      var _this;\n\n      _this = _ClickableComponent.call(this, player, options) || this;\n\n      _this.update();\n\n      player.on('posterchange', bind(_assertThisInitialized(_assertThisInitialized(_this)), _this.update));\n      return _this;\n    }\n    /**\n     * Clean up and dispose of the `PosterImage`.\n     */\n\n\n    var _proto = PosterImage.prototype;\n\n    _proto.dispose = function dispose() {\n      this.player().off('posterchange', this.update);\n\n      _ClickableComponent.prototype.dispose.call(this);\n    }\n    /**\n     * Create the `PosterImage`s DOM element.\n     *\n     * @return {Element}\n     *         The element that gets created.\n     */\n    ;\n\n    _proto.createEl = function createEl$$1() {\n      var el = createEl('div', {\n        className: 'vjs-poster',\n        // Don't want poster to be tabbable.\n        tabIndex: -1\n      });\n      return el;\n    }\n    /**\n     * An {@link EventTarget~EventListener} for {@link Player#posterchange} events.\n     *\n     * @listens Player#posterchange\n     *\n     * @param {EventTarget~Event} [event]\n     *        The `Player#posterchange` event that triggered this function.\n     */\n    ;\n\n    _proto.update = function update(event) {\n      var url = this.player().poster();\n      this.setSrc(url); // If there's no poster source we should display:none on this component\n      // so it's not still clickable or right-clickable\n\n      if (url) {\n        this.show();\n      } else {\n        this.hide();\n      }\n    }\n    /**\n     * Set the source of the `PosterImage` depending on the display method.\n     *\n     * @param {string} url\n     *        The URL to the source for the `PosterImage`.\n     */\n    ;\n\n    _proto.setSrc = function setSrc(url) {\n      var backgroundImage = ''; // Any falsy value should stay as an empty string, otherwise\n      // this will throw an extra error\n\n      if (url) {\n        backgroundImage = \"url(\\\"\" + url + \"\\\")\";\n      }\n\n      this.el_.style.backgroundImage = backgroundImage;\n    }\n    /**\n     * An {@link EventTarget~EventListener} for clicks on the `PosterImage`. See\n     * {@link ClickableComponent#handleClick} for instances where this will be triggered.\n     *\n     * @listens tap\n     * @listens click\n     * @listens keydown\n     *\n     * @param {EventTarget~Event} event\n     +        The `click`, `tap` or `keydown` event that caused this function to be called.\n     */\n    ;\n\n    _proto.handleClick = function handleClick(event) {\n      // We don't want a click to trigger playback when controls are disabled\n      if (!this.player_.controls()) {\n        return;\n      }\n\n      if (this.player_.paused()) {\n        silencePromise(this.player_.play());\n      } else {\n        this.player_.pause();\n      } // call handleFocus manually to get hotkeys working\n\n\n      this.player_.handleFocus({});\n    };\n\n    return PosterImage;\n  }(ClickableComponent);\n\n  Component.registerComponent('PosterImage', PosterImage);\n\n  var darkGray = '#222';\n  var lightGray = '#ccc';\n  var fontMap = {\n    monospace: 'monospace',\n    sansSerif: 'sans-serif',\n    serif: 'serif',\n    monospaceSansSerif: '\"Andale Mono\", \"Lucida Console\", monospace',\n    monospaceSerif: '\"Courier New\", monospace',\n    proportionalSansSerif: 'sans-serif',\n    proportionalSerif: 'serif',\n    casual: '\"Comic Sans MS\", Impact, fantasy',\n    script: '\"Monotype Corsiva\", cursive',\n    smallcaps: '\"Andale Mono\", \"Lucida Console\", monospace, sans-serif'\n  };\n  /**\n   * Construct an rgba color from a given hex color code.\n   *\n   * @param {number} color\n   *        Hex number for color, like #f0e or #f604e2.\n   *\n   * @param {number} opacity\n   *        Value for opacity, 0.0 - 1.0.\n   *\n   * @return {string}\n   *         The rgba color that was created, like 'rgba(255, 0, 0, 0.3)'.\n   */\n\n  function constructColor(color, opacity) {\n    var hex;\n\n    if (color.length === 4) {\n      // color looks like \"#f0e\"\n      hex = color[1] + color[1] + color[2] + color[2] + color[3] + color[3];\n    } else if (color.length === 7) {\n      // color looks like \"#f604e2\"\n      hex = color.slice(1);\n    } else {\n      throw new Error('Invalid color code provided, ' + color + '; must be formatted as e.g. #f0e or #f604e2.');\n    }\n\n    return 'rgba(' + parseInt(hex.slice(0, 2), 16) + ',' + parseInt(hex.slice(2, 4), 16) + ',' + parseInt(hex.slice(4, 6), 16) + ',' + opacity + ')';\n  }\n  /**\n   * Try to update the style of a DOM element. Some style changes will throw an error,\n   * particularly in IE8. Those should be noops.\n   *\n   * @param {Element} el\n   *        The DOM element to be styled.\n   *\n   * @param {string} style\n   *        The CSS property on the element that should be styled.\n   *\n   * @param {string} rule\n   *        The style rule that should be applied to the property.\n   *\n   * @private\n   */\n\n  function tryUpdateStyle(el, style, rule) {\n    try {\n      el.style[style] = rule;\n    } catch (e) {\n      // Satisfies linter.\n      return;\n    }\n  }\n  /**\n   * The component for displaying text track cues.\n   *\n   * @extends Component\n   */\n\n\n  var TextTrackDisplay =\n  /*#__PURE__*/\n  function (_Component) {\n    _inheritsLoose(TextTrackDisplay, _Component);\n\n    /**\n     * Creates an instance of this class.\n     *\n     * @param {Player} player\n     *        The `Player` that this class should be attached to.\n     *\n     * @param {Object} [options]\n     *        The key/value store of player options.\n     *\n     * @param {Component~ReadyCallback} [ready]\n     *        The function to call when `TextTrackDisplay` is ready.\n     */\n    function TextTrackDisplay(player, options, ready) {\n      var _this;\n\n      _this = _Component.call(this, player, options, ready) || this;\n      var updateDisplayHandler = bind(_assertThisInitialized(_assertThisInitialized(_this)), _this.updateDisplay);\n      player.on('loadstart', bind(_assertThisInitialized(_assertThisInitialized(_this)), _this.toggleDisplay));\n      player.on('texttrackchange', updateDisplayHandler);\n      player.on('loadedmetadata', bind(_assertThisInitialized(_assertThisInitialized(_this)), _this.preselectTrack)); // This used to be called during player init, but was causing an error\n      // if a track should show by default and the display hadn't loaded yet.\n      // Should probably be moved to an external track loader when we support\n      // tracks that don't need a display.\n\n      player.ready(bind(_assertThisInitialized(_assertThisInitialized(_this)), function () {\n        if (player.tech_ && player.tech_.featuresNativeTextTracks) {\n          this.hide();\n          return;\n        }\n\n        player.on('fullscreenchange', updateDisplayHandler);\n        player.on('playerresize', updateDisplayHandler);\n        window$1.addEventListener('orientationchange', updateDisplayHandler);\n        player.on('dispose', function () {\n          return window$1.removeEventListener('orientationchange', updateDisplayHandler);\n        });\n        var tracks = this.options_.playerOptions.tracks || [];\n\n        for (var i = 0; i < tracks.length; i++) {\n          this.player_.addRemoteTextTrack(tracks[i], true);\n        }\n\n        this.preselectTrack();\n      }));\n      return _this;\n    }\n    /**\n    * Preselect a track following this precedence:\n    * - matches the previously selected {@link TextTrack}'s language and kind\n    * - matches the previously selected {@link TextTrack}'s language only\n    * - is the first default captions track\n    * - is the first default descriptions track\n    *\n    * @listens Player#loadstart\n    */\n\n\n    var _proto = TextTrackDisplay.prototype;\n\n    _proto.preselectTrack = function preselectTrack() {\n      var modes = {\n        captions: 1,\n        subtitles: 1\n      };\n      var trackList = this.player_.textTracks();\n      var userPref = this.player_.cache_.selectedLanguage;\n      var firstDesc;\n      var firstCaptions;\n      var preferredTrack;\n\n      for (var i = 0; i < trackList.length; i++) {\n        var track = trackList[i];\n\n        if (userPref && userPref.enabled && userPref.language && userPref.language === track.language && track.kind in modes) {\n          // Always choose the track that matches both language and kind\n          if (track.kind === userPref.kind) {\n            preferredTrack = track; // or choose the first track that matches language\n          } else if (!preferredTrack) {\n            preferredTrack = track;\n          } // clear everything if offTextTrackMenuItem was clicked\n\n        } else if (userPref && !userPref.enabled) {\n          preferredTrack = null;\n          firstDesc = null;\n          firstCaptions = null;\n        } else if (track.default) {\n          if (track.kind === 'descriptions' && !firstDesc) {\n            firstDesc = track;\n          } else if (track.kind in modes && !firstCaptions) {\n            firstCaptions = track;\n          }\n        }\n      } // The preferredTrack matches the user preference and takes\n      // precedence over all the other tracks.\n      // So, display the preferredTrack before the first default track\n      // and the subtitles/captions track before the descriptions track\n\n\n      if (preferredTrack) {\n        preferredTrack.mode = 'showing';\n      } else if (firstCaptions) {\n        firstCaptions.mode = 'showing';\n      } else if (firstDesc) {\n        firstDesc.mode = 'showing';\n      }\n    }\n    /**\n     * Turn display of {@link TextTrack}'s from the current state into the other state.\n     * There are only two states:\n     * - 'shown'\n     * - 'hidden'\n     *\n     * @listens Player#loadstart\n     */\n    ;\n\n    _proto.toggleDisplay = function toggleDisplay() {\n      if (this.player_.tech_ && this.player_.tech_.featuresNativeTextTracks) {\n        this.hide();\n      } else {\n        this.show();\n      }\n    }\n    /**\n     * Create the {@link Component}'s DOM element.\n     *\n     * @return {Element}\n     *         The element that was created.\n     */\n    ;\n\n    _proto.createEl = function createEl() {\n      return _Component.prototype.createEl.call(this, 'div', {\n        className: 'vjs-text-track-display'\n      }, {\n        'aria-live': 'off',\n        'aria-atomic': 'true'\n      });\n    }\n    /**\n     * Clear all displayed {@link TextTrack}s.\n     */\n    ;\n\n    _proto.clearDisplay = function clearDisplay() {\n      if (typeof window$1.WebVTT === 'function') {\n        window$1.WebVTT.processCues(window$1, [], this.el_);\n      }\n    }\n    /**\n     * Update the displayed TextTrack when a either a {@link Player#texttrackchange} or\n     * a {@link Player#fullscreenchange} is fired.\n     *\n     * @listens Player#texttrackchange\n     * @listens Player#fullscreenchange\n     */\n    ;\n\n    _proto.updateDisplay = function updateDisplay() {\n      var tracks = this.player_.textTracks();\n      this.clearDisplay(); // Track display prioritization model: if multiple tracks are 'showing',\n      //  display the first 'subtitles' or 'captions' track which is 'showing',\n      //  otherwise display the first 'descriptions' track which is 'showing'\n\n      var descriptionsTrack = null;\n      var captionsSubtitlesTrack = null;\n      var i = tracks.length;\n\n      while (i--) {\n        var track = tracks[i];\n\n        if (track.mode === 'showing') {\n          if (track.kind === 'descriptions') {\n            descriptionsTrack = track;\n          } else {\n            captionsSubtitlesTrack = track;\n          }\n        }\n      }\n\n      if (captionsSubtitlesTrack) {\n        if (this.getAttribute('aria-live') !== 'off') {\n          this.setAttribute('aria-live', 'off');\n        }\n\n        this.updateForTrack(captionsSubtitlesTrack);\n      } else if (descriptionsTrack) {\n        if (this.getAttribute('aria-live') !== 'assertive') {\n          this.setAttribute('aria-live', 'assertive');\n        }\n\n        this.updateForTrack(descriptionsTrack);\n      }\n    }\n    /**\n     * Add an {@link TextTrack} to to the {@link Tech}s {@link TextTrackList}.\n     *\n     * @param {TextTrack} track\n     *        Text track object to be added to the list.\n     */\n    ;\n\n    _proto.updateForTrack = function updateForTrack(track) {\n      if (typeof window$1.WebVTT !== 'function' || !track.activeCues) {\n        return;\n      }\n\n      var cues = [];\n\n      for (var _i = 0; _i < track.activeCues.length; _i++) {\n        cues.push(track.activeCues[_i]);\n      }\n\n      window$1.WebVTT.processCues(window$1, cues, this.el_);\n\n      if (!this.player_.textTrackSettings) {\n        return;\n      }\n\n      var overrides = this.player_.textTrackSettings.getValues();\n      var i = cues.length;\n\n      while (i--) {\n        var cue = cues[i];\n\n        if (!cue) {\n          continue;\n        }\n\n        var cueDiv = cue.displayState;\n\n        if (overrides.color) {\n          cueDiv.firstChild.style.color = overrides.color;\n        }\n\n        if (overrides.textOpacity) {\n          tryUpdateStyle(cueDiv.firstChild, 'color', constructColor(overrides.color || '#fff', overrides.textOpacity));\n        }\n\n        if (overrides.backgroundColor) {\n          cueDiv.firstChild.style.backgroundColor = overrides.backgroundColor;\n        }\n\n        if (overrides.backgroundOpacity) {\n          tryUpdateStyle(cueDiv.firstChild, 'backgroundColor', constructColor(overrides.backgroundColor || '#000', overrides.backgroundOpacity));\n        }\n\n        if (overrides.windowColor) {\n          if (overrides.windowOpacity) {\n            tryUpdateStyle(cueDiv, 'backgroundColor', constructColor(overrides.windowColor, overrides.windowOpacity));\n          } else {\n            cueDiv.style.backgroundColor = overrides.windowColor;\n          }\n        }\n\n        if (overrides.edgeStyle) {\n          if (overrides.edgeStyle === 'dropshadow') {\n            cueDiv.firstChild.style.textShadow = \"2px 2px 3px \" + darkGray + \", 2px 2px 4px \" + darkGray + \", 2px 2px 5px \" + darkGray;\n          } else if (overrides.edgeStyle === 'raised') {\n            cueDiv.firstChild.style.textShadow = \"1px 1px \" + darkGray + \", 2px 2px \" + darkGray + \", 3px 3px \" + darkGray;\n          } else if (overrides.edgeStyle === 'depressed') {\n            cueDiv.firstChild.style.textShadow = \"1px 1px \" + lightGray + \", 0 1px \" + lightGray + \", -1px -1px \" + darkGray + \", 0 -1px \" + darkGray;\n          } else if (overrides.edgeStyle === 'uniform') {\n            cueDiv.firstChild.style.textShadow = \"0 0 4px \" + darkGray + \", 0 0 4px \" + darkGray + \", 0 0 4px \" + darkGray + \", 0 0 4px \" + darkGray;\n          }\n        }\n\n        if (overrides.fontPercent && overrides.fontPercent !== 1) {\n          var fontSize = window$1.parseFloat(cueDiv.style.fontSize);\n          cueDiv.style.fontSize = fontSize * overrides.fontPercent + 'px';\n          cueDiv.style.height = 'auto';\n          cueDiv.style.top = 'auto';\n          cueDiv.style.bottom = '2px';\n        }\n\n        if (overrides.fontFamily && overrides.fontFamily !== 'default') {\n          if (overrides.fontFamily === 'small-caps') {\n            cueDiv.firstChild.style.fontVariant = 'small-caps';\n          } else {\n            cueDiv.firstChild.style.fontFamily = fontMap[overrides.fontFamily];\n          }\n        }\n      }\n    };\n\n    return TextTrackDisplay;\n  }(Component);\n\n  Component.registerComponent('TextTrackDisplay', TextTrackDisplay);\n\n  /**\n   * A loading spinner for use during waiting/loading events.\n   *\n   * @extends Component\n   */\n\n  var LoadingSpinner =\n  /*#__PURE__*/\n  function (_Component) {\n    _inheritsLoose(LoadingSpinner, _Component);\n\n    function LoadingSpinner() {\n      return _Component.apply(this, arguments) || this;\n    }\n\n    var _proto = LoadingSpinner.prototype;\n\n    /**\n     * Create the `LoadingSpinner`s DOM element.\n     *\n     * @return {Element}\n     *         The dom element that gets created.\n     */\n    _proto.createEl = function createEl$$1() {\n      var isAudio = this.player_.isAudio();\n      var playerType = this.localize(isAudio ? 'Audio Player' : 'Video Player');\n      var controlText = createEl('span', {\n        className: 'vjs-control-text',\n        innerHTML: this.localize('{1} is loading.', [playerType])\n      });\n\n      var el = _Component.prototype.createEl.call(this, 'div', {\n        className: 'vjs-loading-spinner',\n        dir: 'ltr'\n      });\n\n      el.appendChild(controlText);\n      return el;\n    };\n\n    return LoadingSpinner;\n  }(Component);\n\n  Component.registerComponent('LoadingSpinner', LoadingSpinner);\n\n  /**\n   * Base class for all buttons.\n   *\n   * @extends ClickableComponent\n   */\n\n  var Button =\n  /*#__PURE__*/\n  function (_ClickableComponent) {\n    _inheritsLoose(Button, _ClickableComponent);\n\n    function Button() {\n      return _ClickableComponent.apply(this, arguments) || this;\n    }\n\n    var _proto = Button.prototype;\n\n    /**\n     * Create the `Button`s DOM element.\n     *\n     * @param {string} [tag=\"button\"]\n     *        The element's node type. This argument is IGNORED: no matter what\n     *        is passed, it will always create a `button` element.\n     *\n     * @param {Object} [props={}]\n     *        An object of properties that should be set on the element.\n     *\n     * @param {Object} [attributes={}]\n     *        An object of attributes that should be set on the element.\n     *\n     * @return {Element}\n     *         The element that gets created.\n     */\n    _proto.createEl = function createEl(tag, props, attributes) {\n      if (props === void 0) {\n        props = {};\n      }\n\n      if (attributes === void 0) {\n        attributes = {};\n      }\n\n      tag = 'button';\n      props = assign({\n        innerHTML: '<span aria-hidden=\"true\" class=\"vjs-icon-placeholder\"></span>',\n        className: this.buildCSSClass()\n      }, props); // Add attributes for button element\n\n      attributes = assign({\n        // Necessary since the default button type is \"submit\"\n        type: 'button'\n      }, attributes);\n      var el = Component.prototype.createEl.call(this, tag, props, attributes);\n      this.createControlTextEl(el);\n      return el;\n    }\n    /**\n     * Add a child `Component` inside of this `Button`.\n     *\n     * @param {string|Component} child\n     *        The name or instance of a child to add.\n     *\n     * @param {Object} [options={}]\n     *        The key/value store of options that will get passed to children of\n     *        the child.\n     *\n     * @return {Component}\n     *         The `Component` that gets added as a child. When using a string the\n     *         `Component` will get created by this process.\n     *\n     * @deprecated since version 5\n     */\n    ;\n\n    _proto.addChild = function addChild(child, options) {\n      if (options === void 0) {\n        options = {};\n      }\n\n      var className = this.constructor.name;\n      log.warn(\"Adding an actionable (user controllable) child to a Button (\" + className + \") is not supported; use a ClickableComponent instead.\"); // Avoid the error message generated by ClickableComponent's addChild method\n\n      return Component.prototype.addChild.call(this, child, options);\n    }\n    /**\n     * Enable the `Button` element so that it can be activated or clicked. Use this with\n     * {@link Button#disable}.\n     */\n    ;\n\n    _proto.enable = function enable() {\n      _ClickableComponent.prototype.enable.call(this);\n\n      this.el_.removeAttribute('disabled');\n    }\n    /**\n     * Disable the `Button` element so that it cannot be activated or clicked. Use this with\n     * {@link Button#enable}.\n     */\n    ;\n\n    _proto.disable = function disable() {\n      _ClickableComponent.prototype.disable.call(this);\n\n      this.el_.setAttribute('disabled', 'disabled');\n    }\n    /**\n     * This gets called when a `Button` has focus and `keydown` is triggered via a key\n     * press.\n     *\n     * @param {EventTarget~Event} event\n     *        The event that caused this function to get called.\n     *\n     * @listens keydown\n     */\n    ;\n\n    _proto.handleKeyPress = function handleKeyPress(event) {\n      // Ignore Space or Enter key operation, which is handled by the browser for a button.\n      if (!(keycode.isEventKey(event, 'Space') || keycode.isEventKey(event, 'Enter'))) {\n        // Pass keypress handling up for unsupported keys\n        _ClickableComponent.prototype.handleKeyPress.call(this, event);\n      }\n    };\n\n    return Button;\n  }(ClickableComponent);\n\n  Component.registerComponent('Button', Button);\n\n  /**\n   * The initial play button that shows before the video has played. The hiding of the\n   * `BigPlayButton` get done via CSS and `Player` states.\n   *\n   * @extends Button\n   */\n\n  var BigPlayButton =\n  /*#__PURE__*/\n  function (_Button) {\n    _inheritsLoose(BigPlayButton, _Button);\n\n    function BigPlayButton(player, options) {\n      var _this;\n\n      _this = _Button.call(this, player, options) || this;\n      _this.mouseused_ = false;\n\n      _this.on('mousedown', _this.handleMouseDown);\n\n      return _this;\n    }\n    /**\n     * Builds the default DOM `className`.\n     *\n     * @return {string}\n     *         The DOM `className` for this object. Always returns 'vjs-big-play-button'.\n     */\n\n\n    var _proto = BigPlayButton.prototype;\n\n    _proto.buildCSSClass = function buildCSSClass() {\n      return 'vjs-big-play-button';\n    }\n    /**\n     * This gets called when a `BigPlayButton` \"clicked\". See {@link ClickableComponent}\n     * for more detailed information on what a click can be.\n     *\n     * @param {EventTarget~Event} event\n     *        The `keydown`, `tap`, or `click` event that caused this function to be\n     *        called.\n     *\n     * @listens tap\n     * @listens click\n     */\n    ;\n\n    _proto.handleClick = function handleClick(event) {\n      var playPromise = this.player_.play(); // exit early if clicked via the mouse\n\n      if (this.mouseused_ && event.clientX && event.clientY) {\n        silencePromise(playPromise); // call handleFocus manually to get hotkeys working\n\n        this.player_.handleFocus({});\n        return;\n      }\n\n      var cb = this.player_.getChild('controlBar');\n      var playToggle = cb && cb.getChild('playToggle');\n\n      if (!playToggle) {\n        this.player_.focus();\n        return;\n      }\n\n      var playFocus = function playFocus() {\n        return playToggle.focus();\n      };\n\n      if (isPromise(playPromise)) {\n        playPromise.then(playFocus, function () {});\n      } else {\n        this.setTimeout(playFocus, 1);\n      }\n    };\n\n    _proto.handleKeyPress = function handleKeyPress(event) {\n      this.mouseused_ = false;\n\n      _Button.prototype.handleKeyPress.call(this, event);\n    };\n\n    _proto.handleMouseDown = function handleMouseDown(event) {\n      this.mouseused_ = true;\n    };\n\n    return BigPlayButton;\n  }(Button);\n  /**\n   * The text that should display over the `BigPlayButton`s controls. Added to for localization.\n   *\n   * @type {string}\n   * @private\n   */\n\n\n  BigPlayButton.prototype.controlText_ = 'Play Video';\n  Component.registerComponent('BigPlayButton', BigPlayButton);\n\n  /**\n   * The `CloseButton` is a `{@link Button}` that fires a `close` event when\n   * it gets clicked.\n   *\n   * @extends Button\n   */\n\n  var CloseButton =\n  /*#__PURE__*/\n  function (_Button) {\n    _inheritsLoose(CloseButton, _Button);\n\n    /**\n    * Creates an instance of the this class.\n    *\n    * @param  {Player} player\n    *         The `Player` that this class should be attached to.\n    *\n    * @param  {Object} [options]\n    *         The key/value store of player options.\n    */\n    function CloseButton(player, options) {\n      var _this;\n\n      _this = _Button.call(this, player, options) || this;\n\n      _this.controlText(options && options.controlText || _this.localize('Close'));\n\n      return _this;\n    }\n    /**\n    * Builds the default DOM `className`.\n    *\n    * @return {string}\n    *         The DOM `className` for this object.\n    */\n\n\n    var _proto = CloseButton.prototype;\n\n    _proto.buildCSSClass = function buildCSSClass() {\n      return \"vjs-close-button \" + _Button.prototype.buildCSSClass.call(this);\n    }\n    /**\n     * This gets called when a `CloseButton` has focus and `keydown` is triggered via a key\n     * press.\n     *\n     * @param {EventTarget~Event} event\n     *        The event that caused this function to get called.\n     *\n     * @listens keydown\n     */\n    ;\n\n    _proto.handleKeyPress = function handleKeyPress(event) {} // Override the default `Button` behavior, and don't pass the keypress event\n    //  up to the player because this button is part of a `ModalDialog`, which\n    //  doesn't pass keypresses to the player either.\n\n    /**\n     * This gets called when a `CloseButton` gets clicked. See\n     * {@link ClickableComponent#handleClick} for more information on when this will be\n     * triggered\n     *\n     * @param {EventTarget~Event} event\n     *        The `keydown`, `tap`, or `click` event that caused this function to be\n     *        called.\n     *\n     * @listens tap\n     * @listens click\n     * @fires CloseButton#close\n     */\n    ;\n\n    _proto.handleClick = function handleClick(event) {\n      /**\n       * Triggered when the a `CloseButton` is clicked.\n       *\n       * @event CloseButton#close\n       * @type {EventTarget~Event}\n       *\n       * @property {boolean} [bubbles=false]\n       *           set to false so that the close event does not\n       *           bubble up to parents if there is no listener\n       */\n      this.trigger({\n        type: 'close',\n        bubbles: false\n      });\n    };\n\n    return CloseButton;\n  }(Button);\n\n  Component.registerComponent('CloseButton', CloseButton);\n\n  /**\n   * Button to toggle between play and pause.\n   *\n   * @extends Button\n   */\n\n  var PlayToggle =\n  /*#__PURE__*/\n  function (_Button) {\n    _inheritsLoose(PlayToggle, _Button);\n\n    /**\n     * Creates an instance of this class.\n     *\n     * @param {Player} player\n     *        The `Player` that this class should be attached to.\n     *\n     * @param {Object} [options={}]\n     *        The key/value store of player options.\n     */\n    function PlayToggle(player, options) {\n      var _this;\n\n      if (options === void 0) {\n        options = {};\n      }\n\n      _this = _Button.call(this, player, options) || this; // show or hide replay icon\n\n      options.replay = options.replay === undefined || options.replay;\n\n      _this.on(player, 'play', _this.handlePlay);\n\n      _this.on(player, 'pause', _this.handlePause);\n\n      if (options.replay) {\n        _this.on(player, 'ended', _this.handleEnded);\n      }\n\n      return _this;\n    }\n    /**\n     * Builds the default DOM `className`.\n     *\n     * @return {string}\n     *         The DOM `className` for this object.\n     */\n\n\n    var _proto = PlayToggle.prototype;\n\n    _proto.buildCSSClass = function buildCSSClass() {\n      return \"vjs-play-control \" + _Button.prototype.buildCSSClass.call(this);\n    }\n    /**\n     * This gets called when an `PlayToggle` is \"clicked\". See\n     * {@link ClickableComponent} for more detailed information on what a click can be.\n     *\n     * @param {EventTarget~Event} [event]\n     *        The `keydown`, `tap`, or `click` event that caused this function to be\n     *        called.\n     *\n     * @listens tap\n     * @listens click\n     */\n    ;\n\n    _proto.handleClick = function handleClick(event) {\n      if (this.player_.paused()) {\n        this.player_.play();\n      } else {\n        this.player_.pause();\n      }\n    }\n    /**\n     * This gets called once after the video has ended and the user seeks so that\n     * we can change the replay button back to a play button.\n     *\n     * @param {EventTarget~Event} [event]\n     *        The event that caused this function to run.\n     *\n     * @listens Player#seeked\n     */\n    ;\n\n    _proto.handleSeeked = function handleSeeked(event) {\n      this.removeClass('vjs-ended');\n\n      if (this.player_.paused()) {\n        this.handlePause(event);\n      } else {\n        this.handlePlay(event);\n      }\n    }\n    /**\n     * Add the vjs-playing class to the element so it can change appearance.\n     *\n     * @param {EventTarget~Event} [event]\n     *        The event that caused this function to run.\n     *\n     * @listens Player#play\n     */\n    ;\n\n    _proto.handlePlay = function handlePlay(event) {\n      this.removeClass('vjs-ended');\n      this.removeClass('vjs-paused');\n      this.addClass('vjs-playing'); // change the button text to \"Pause\"\n\n      this.controlText('Pause');\n    }\n    /**\n     * Add the vjs-paused class to the element so it can change appearance.\n     *\n     * @param {EventTarget~Event} [event]\n     *        The event that caused this function to run.\n     *\n     * @listens Player#pause\n     */\n    ;\n\n    _proto.handlePause = function handlePause(event) {\n      this.removeClass('vjs-playing');\n      this.addClass('vjs-paused'); // change the button text to \"Play\"\n\n      this.controlText('Play');\n    }\n    /**\n     * Add the vjs-ended class to the element so it can change appearance\n     *\n     * @param {EventTarget~Event} [event]\n     *        The event that caused this function to run.\n     *\n     * @listens Player#ended\n     */\n    ;\n\n    _proto.handleEnded = function handleEnded(event) {\n      this.removeClass('vjs-playing');\n      this.addClass('vjs-ended'); // change the button text to \"Replay\"\n\n      this.controlText('Replay'); // on the next seek remove the replay button\n\n      this.one(this.player_, 'seeked', this.handleSeeked);\n    };\n\n    return PlayToggle;\n  }(Button);\n  /**\n   * The text that should display over the `PlayToggle`s controls. Added for localization.\n   *\n   * @type {string}\n   * @private\n   */\n\n\n  PlayToggle.prototype.controlText_ = 'Play';\n  Component.registerComponent('PlayToggle', PlayToggle);\n\n  /**\n   * @file format-time.js\n   * @module format-time\n   */\n\n  /**\n   * Format seconds as a time string, H:MM:SS or M:SS. Supplying a guide (in\n   * seconds) will force a number of leading zeros to cover the length of the\n   * guide.\n   *\n   * @private\n   * @param  {number} seconds\n   *         Number of seconds to be turned into a string\n   *\n   * @param  {number} guide\n   *         Number (in seconds) to model the string after\n   *\n   * @return {string}\n   *         Time formatted as H:MM:SS or M:SS\n   */\n  var defaultImplementation = function defaultImplementation(seconds, guide) {\n    seconds = seconds < 0 ? 0 : seconds;\n    var s = Math.floor(seconds % 60);\n    var m = Math.floor(seconds / 60 % 60);\n    var h = Math.floor(seconds / 3600);\n    var gm = Math.floor(guide / 60 % 60);\n    var gh = Math.floor(guide / 3600); // handle invalid times\n\n    if (isNaN(seconds) || seconds === Infinity) {\n      // '-' is false for all relational operators (e.g. <, >=) so this setting\n      // will add the minimum number of fields specified by the guide\n      h = m = s = '-';\n    } // Check if we need to show hours\n\n\n    h = h > 0 || gh > 0 ? h + ':' : ''; // If hours are showing, we may need to add a leading zero.\n    // Always show at least one digit of minutes.\n\n    m = ((h || gm >= 10) && m < 10 ? '0' + m : m) + ':'; // Check if leading zero is need for seconds\n\n    s = s < 10 ? '0' + s : s;\n    return h + m + s;\n  }; // Internal pointer to the current implementation.\n\n\n  var implementation = defaultImplementation;\n  /**\n   * Replaces the default formatTime implementation with a custom implementation.\n   *\n   * @param {Function} customImplementation\n   *        A function which will be used in place of the default formatTime\n   *        implementation. Will receive the current time in seconds and the\n   *        guide (in seconds) as arguments.\n   */\n\n  function setFormatTime(customImplementation) {\n    implementation = customImplementation;\n  }\n  /**\n   * Resets formatTime to the default implementation.\n   */\n\n  function resetFormatTime() {\n    implementation = defaultImplementation;\n  }\n  /**\n   * Delegates to either the default time formatting function or a custom\n   * function supplied via `setFormatTime`.\n   *\n   * Formats seconds as a time string (H:MM:SS or M:SS). Supplying a\n   * guide (in seconds) will force a number of leading zeros to cover the\n   * length of the guide.\n   *\n   * @static\n   * @example  formatTime(125, 600) === \"02:05\"\n   * @param    {number} seconds\n   *           Number of seconds to be turned into a string\n   *\n   * @param    {number} guide\n   *           Number (in seconds) to model the string after\n   *\n   * @return   {string}\n   *           Time formatted as H:MM:SS or M:SS\n   */\n\n  function formatTime(seconds, guide) {\n    if (guide === void 0) {\n      guide = seconds;\n    }\n\n    return implementation(seconds, guide);\n  }\n\n  /**\n   * Displays time information about the video\n   *\n   * @extends Component\n   */\n\n  var TimeDisplay =\n  /*#__PURE__*/\n  function (_Component) {\n    _inheritsLoose(TimeDisplay, _Component);\n\n    /**\n     * Creates an instance of this class.\n     *\n     * @param {Player} player\n     *        The `Player` that this class should be attached to.\n     *\n     * @param {Object} [options]\n     *        The key/value store of player options.\n     */\n    function TimeDisplay(player, options) {\n      var _this;\n\n      _this = _Component.call(this, player, options) || this;\n      _this.throttledUpdateContent = throttle(bind(_assertThisInitialized(_assertThisInitialized(_this)), _this.updateContent), 25);\n\n      _this.on(player, 'timeupdate', _this.throttledUpdateContent);\n\n      return _this;\n    }\n    /**\n     * Create the `Component`'s DOM element\n     *\n     * @return {Element}\n     *         The element that was created.\n     */\n\n\n    var _proto = TimeDisplay.prototype;\n\n    _proto.createEl = function createEl$$1() {\n      var className = this.buildCSSClass();\n\n      var el = _Component.prototype.createEl.call(this, 'div', {\n        className: className + \" vjs-time-control vjs-control\",\n        innerHTML: \"<span class=\\\"vjs-control-text\\\" role=\\\"presentation\\\">\" + this.localize(this.labelText_) + \"\\xA0</span>\"\n      });\n\n      this.contentEl_ = createEl('span', {\n        className: className + \"-display\"\n      }, {\n        // tell screen readers not to automatically read the time as it changes\n        'aria-live': 'off',\n        // span elements have no implicit role, but some screen readers (notably VoiceOver)\n        // treat them as a break between items in the DOM when using arrow keys\n        // (or left-to-right swipes on iOS) to read contents of a page. Using\n        // role='presentation' causes VoiceOver to NOT treat this span as a break.\n        'role': 'presentation'\n      });\n      this.updateTextNode_();\n      el.appendChild(this.contentEl_);\n      return el;\n    };\n\n    _proto.dispose = function dispose() {\n      this.contentEl_ = null;\n      this.textNode_ = null;\n\n      _Component.prototype.dispose.call(this);\n    }\n    /**\n     * Updates the \"remaining time\" text node with new content using the\n     * contents of the `formattedTime_` property.\n     *\n     * @private\n     */\n    ;\n\n    _proto.updateTextNode_ = function updateTextNode_() {\n      if (!this.contentEl_) {\n        return;\n      }\n\n      while (this.contentEl_.firstChild) {\n        this.contentEl_.removeChild(this.contentEl_.firstChild);\n      }\n\n      this.textNode_ = document.createTextNode(this.formattedTime_ || this.formatTime_(0));\n      this.contentEl_.appendChild(this.textNode_);\n    }\n    /**\n     * Generates a formatted time for this component to use in display.\n     *\n     * @param  {number} time\n     *         A numeric time, in seconds.\n     *\n     * @return {string}\n     *         A formatted time\n     *\n     * @private\n     */\n    ;\n\n    _proto.formatTime_ = function formatTime_(time) {\n      return formatTime(time);\n    }\n    /**\n     * Updates the time display text node if it has what was passed in changed\n     * the formatted time.\n     *\n     * @param {number} time\n     *        The time to update to\n     *\n     * @private\n     */\n    ;\n\n    _proto.updateFormattedTime_ = function updateFormattedTime_(time) {\n      var formattedTime = this.formatTime_(time);\n\n      if (formattedTime === this.formattedTime_) {\n        return;\n      }\n\n      this.formattedTime_ = formattedTime;\n      this.requestAnimationFrame(this.updateTextNode_);\n    }\n    /**\n     * To be filled out in the child class, should update the displayed time\n     * in accordance with the fact that the current time has changed.\n     *\n     * @param {EventTarget~Event} [event]\n     *        The `timeupdate`  event that caused this to run.\n     *\n     * @listens Player#timeupdate\n     */\n    ;\n\n    _proto.updateContent = function updateContent(event) {};\n\n    return TimeDisplay;\n  }(Component);\n  /**\n   * The text that is added to the `TimeDisplay` for screen reader users.\n   *\n   * @type {string}\n   * @private\n   */\n\n\n  TimeDisplay.prototype.labelText_ = 'Time';\n  /**\n   * The text that should display over the `TimeDisplay`s controls. Added to for localization.\n   *\n   * @type {string}\n   * @private\n   *\n   * @deprecated in v7; controlText_ is not used in non-active display Components\n   */\n\n  TimeDisplay.prototype.controlText_ = 'Time';\n  Component.registerComponent('TimeDisplay', TimeDisplay);\n\n  /**\n   * Displays the current time\n   *\n   * @extends Component\n   */\n\n  var CurrentTimeDisplay =\n  /*#__PURE__*/\n  function (_TimeDisplay) {\n    _inheritsLoose(CurrentTimeDisplay, _TimeDisplay);\n\n    /**\n     * Creates an instance of this class.\n     *\n     * @param {Player} player\n     *        The `Player` that this class should be attached to.\n     *\n     * @param {Object} [options]\n     *        The key/value store of player options.\n     */\n    function CurrentTimeDisplay(player, options) {\n      var _this;\n\n      _this = _TimeDisplay.call(this, player, options) || this;\n\n      _this.on(player, 'ended', _this.handleEnded);\n\n      return _this;\n    }\n    /**\n     * Builds the default DOM `className`.\n     *\n     * @return {string}\n     *         The DOM `className` for this object.\n     */\n\n\n    var _proto = CurrentTimeDisplay.prototype;\n\n    _proto.buildCSSClass = function buildCSSClass() {\n      return 'vjs-current-time';\n    }\n    /**\n     * Update current time display\n     *\n     * @param {EventTarget~Event} [event]\n     *        The `timeupdate` event that caused this function to run.\n     *\n     * @listens Player#timeupdate\n     */\n    ;\n\n    _proto.updateContent = function updateContent(event) {\n      // Allows for smooth scrubbing, when player can't keep up.\n      var time = this.player_.scrubbing() ? this.player_.getCache().currentTime : this.player_.currentTime();\n      this.updateFormattedTime_(time);\n    }\n    /**\n     * When the player fires ended there should be no time left. Sadly\n     * this is not always the case, lets make it seem like that is the case\n     * for users.\n     *\n     * @param {EventTarget~Event} [event]\n     *        The `ended` event that caused this to run.\n     *\n     * @listens Player#ended\n     */\n    ;\n\n    _proto.handleEnded = function handleEnded(event) {\n      if (!this.player_.duration()) {\n        return;\n      }\n\n      this.updateFormattedTime_(this.player_.duration());\n    };\n\n    return CurrentTimeDisplay;\n  }(TimeDisplay);\n  /**\n   * The text that is added to the `CurrentTimeDisplay` for screen reader users.\n   *\n   * @type {string}\n   * @private\n   */\n\n\n  CurrentTimeDisplay.prototype.labelText_ = 'Current Time';\n  /**\n   * The text that should display over the `CurrentTimeDisplay`s controls. Added to for localization.\n   *\n   * @type {string}\n   * @private\n   *\n   * @deprecated in v7; controlText_ is not used in non-active display Components\n   */\n\n  CurrentTimeDisplay.prototype.controlText_ = 'Current Time';\n  Component.registerComponent('CurrentTimeDisplay', CurrentTimeDisplay);\n\n  /**\n   * Displays the duration\n   *\n   * @extends Component\n   */\n\n  var DurationDisplay =\n  /*#__PURE__*/\n  function (_TimeDisplay) {\n    _inheritsLoose(DurationDisplay, _TimeDisplay);\n\n    /**\n     * Creates an instance of this class.\n     *\n     * @param {Player} player\n     *        The `Player` that this class should be attached to.\n     *\n     * @param {Object} [options]\n     *        The key/value store of player options.\n     */\n    function DurationDisplay(player, options) {\n      var _this;\n\n      _this = _TimeDisplay.call(this, player, options) || this; // we do not want to/need to throttle duration changes,\n      // as they should always display the changed duration as\n      // it has changed\n\n      _this.on(player, 'durationchange', _this.updateContent); // Listen to loadstart because the player duration is reset when a new media element is loaded,\n      // but the durationchange on the user agent will not fire.\n      // @see [Spec]{@link https://www.w3.org/TR/2011/WD-html5-20110113/video.html#media-element-load-algorithm}\n\n\n      _this.on(player, 'loadstart', _this.updateContent); // Also listen for timeupdate (in the parent) and loadedmetadata because removing those\n      // listeners could have broken dependent applications/libraries. These\n      // can likely be removed for 7.0.\n\n\n      _this.on(player, 'loadedmetadata', _this.throttledUpdateContent);\n\n      return _this;\n    }\n    /**\n     * Builds the default DOM `className`.\n     *\n     * @return {string}\n     *         The DOM `className` for this object.\n     */\n\n\n    var _proto = DurationDisplay.prototype;\n\n    _proto.buildCSSClass = function buildCSSClass() {\n      return 'vjs-duration';\n    }\n    /**\n     * Update duration time display.\n     *\n     * @param {EventTarget~Event} [event]\n     *        The `durationchange`, `timeupdate`, or `loadedmetadata` event that caused\n     *        this function to be called.\n     *\n     * @listens Player#durationchange\n     * @listens Player#timeupdate\n     * @listens Player#loadedmetadata\n     */\n    ;\n\n    _proto.updateContent = function updateContent(event) {\n      var duration = this.player_.duration();\n\n      if (this.duration_ !== duration) {\n        this.duration_ = duration;\n        this.updateFormattedTime_(duration);\n      }\n    };\n\n    return DurationDisplay;\n  }(TimeDisplay);\n  /**\n   * The text that is added to the `DurationDisplay` for screen reader users.\n   *\n   * @type {string}\n   * @private\n   */\n\n\n  DurationDisplay.prototype.labelText_ = 'Duration';\n  /**\n   * The text that should display over the `DurationDisplay`s controls. Added to for localization.\n   *\n   * @type {string}\n   * @private\n   *\n   * @deprecated in v7; controlText_ is not used in non-active display Components\n   */\n\n  DurationDisplay.prototype.controlText_ = 'Duration';\n  Component.registerComponent('DurationDisplay', DurationDisplay);\n\n  /**\n   * The separator between the current time and duration.\n   * Can be hidden if it's not needed in the design.\n   *\n   * @extends Component\n   */\n\n  var TimeDivider =\n  /*#__PURE__*/\n  function (_Component) {\n    _inheritsLoose(TimeDivider, _Component);\n\n    function TimeDivider() {\n      return _Component.apply(this, arguments) || this;\n    }\n\n    var _proto = TimeDivider.prototype;\n\n    /**\n     * Create the component's DOM element\n     *\n     * @return {Element}\n     *         The element that was created.\n     */\n    _proto.createEl = function createEl() {\n      return _Component.prototype.createEl.call(this, 'div', {\n        className: 'vjs-time-control vjs-time-divider',\n        innerHTML: '<div><span>/</span></div>'\n      }, {\n        // this element and its contents can be hidden from assistive techs since\n        // it is made extraneous by the announcement of the control text\n        // for the current time and duration displays\n        'aria-hidden': true\n      });\n    };\n\n    return TimeDivider;\n  }(Component);\n\n  Component.registerComponent('TimeDivider', TimeDivider);\n\n  /**\n   * Displays the time left in the video\n   *\n   * @extends Component\n   */\n\n  var RemainingTimeDisplay =\n  /*#__PURE__*/\n  function (_TimeDisplay) {\n    _inheritsLoose(RemainingTimeDisplay, _TimeDisplay);\n\n    /**\n     * Creates an instance of this class.\n     *\n     * @param {Player} player\n     *        The `Player` that this class should be attached to.\n     *\n     * @param {Object} [options]\n     *        The key/value store of player options.\n     */\n    function RemainingTimeDisplay(player, options) {\n      var _this;\n\n      _this = _TimeDisplay.call(this, player, options) || this;\n\n      _this.on(player, 'durationchange', _this.throttledUpdateContent);\n\n      _this.on(player, 'ended', _this.handleEnded);\n\n      return _this;\n    }\n    /**\n     * Builds the default DOM `className`.\n     *\n     * @return {string}\n     *         The DOM `className` for this object.\n     */\n\n\n    var _proto = RemainingTimeDisplay.prototype;\n\n    _proto.buildCSSClass = function buildCSSClass() {\n      return 'vjs-remaining-time';\n    }\n    /**\n     * Create the `Component`'s DOM element with the \"minus\" characted prepend to the time\n     *\n     * @return {Element}\n     *         The element that was created.\n     */\n    ;\n\n    _proto.createEl = function createEl$$1() {\n      var el = _TimeDisplay.prototype.createEl.call(this);\n\n      el.insertBefore(createEl('span', {}, {\n        'aria-hidden': true\n      }, '-'), this.contentEl_);\n      return el;\n    }\n    /**\n     * Update remaining time display.\n     *\n     * @param {EventTarget~Event} [event]\n     *        The `timeupdate` or `durationchange` event that caused this to run.\n     *\n     * @listens Player#timeupdate\n     * @listens Player#durationchange\n     */\n    ;\n\n    _proto.updateContent = function updateContent(event) {\n      if (typeof this.player_.duration() !== 'number') {\n        return;\n      } // @deprecated We should only use remainingTimeDisplay\n      // as of video.js 7\n\n\n      if (this.player_.remainingTimeDisplay) {\n        this.updateFormattedTime_(this.player_.remainingTimeDisplay());\n      } else {\n        this.updateFormattedTime_(this.player_.remainingTime());\n      }\n    }\n    /**\n     * When the player fires ended there should be no time left. Sadly\n     * this is not always the case, lets make it seem like that is the case\n     * for users.\n     *\n     * @param {EventTarget~Event} [event]\n     *        The `ended` event that caused this to run.\n     *\n     * @listens Player#ended\n     */\n    ;\n\n    _proto.handleEnded = function handleEnded(event) {\n      if (!this.player_.duration()) {\n        return;\n      }\n\n      this.updateFormattedTime_(0);\n    };\n\n    return RemainingTimeDisplay;\n  }(TimeDisplay);\n  /**\n   * The text that is added to the `RemainingTimeDisplay` for screen reader users.\n   *\n   * @type {string}\n   * @private\n   */\n\n\n  RemainingTimeDisplay.prototype.labelText_ = 'Remaining Time';\n  /**\n   * The text that should display over the `RemainingTimeDisplay`s controls. Added to for localization.\n   *\n   * @type {string}\n   * @private\n   *\n   * @deprecated in v7; controlText_ is not used in non-active display Components\n   */\n\n  RemainingTimeDisplay.prototype.controlText_ = 'Remaining Time';\n  Component.registerComponent('RemainingTimeDisplay', RemainingTimeDisplay);\n\n  /**\n   * Displays the live indicator when duration is Infinity.\n   *\n   * @extends Component\n   */\n\n  var LiveDisplay =\n  /*#__PURE__*/\n  function (_Component) {\n    _inheritsLoose(LiveDisplay, _Component);\n\n    /**\n     * Creates an instance of this class.\n     *\n     * @param {Player} player\n     *        The `Player` that this class should be attached to.\n     *\n     * @param {Object} [options]\n     *        The key/value store of player options.\n     */\n    function LiveDisplay(player, options) {\n      var _this;\n\n      _this = _Component.call(this, player, options) || this;\n\n      _this.updateShowing();\n\n      _this.on(_this.player(), 'durationchange', _this.updateShowing);\n\n      return _this;\n    }\n    /**\n     * Create the `Component`'s DOM element\n     *\n     * @return {Element}\n     *         The element that was created.\n     */\n\n\n    var _proto = LiveDisplay.prototype;\n\n    _proto.createEl = function createEl$$1() {\n      var el = _Component.prototype.createEl.call(this, 'div', {\n        className: 'vjs-live-control vjs-control'\n      });\n\n      this.contentEl_ = createEl('div', {\n        className: 'vjs-live-display',\n        innerHTML: \"<span class=\\\"vjs-control-text\\\">\" + this.localize('Stream Type') + \"\\xA0</span>\" + this.localize('LIVE')\n      }, {\n        'aria-live': 'off'\n      });\n      el.appendChild(this.contentEl_);\n      return el;\n    };\n\n    _proto.dispose = function dispose() {\n      this.contentEl_ = null;\n\n      _Component.prototype.dispose.call(this);\n    }\n    /**\n     * Check the duration to see if the LiveDisplay should be showing or not. Then show/hide\n     * it accordingly\n     *\n     * @param {EventTarget~Event} [event]\n     *        The {@link Player#durationchange} event that caused this function to run.\n     *\n     * @listens Player#durationchange\n     */\n    ;\n\n    _proto.updateShowing = function updateShowing(event) {\n      if (this.player().duration() === Infinity) {\n        this.show();\n      } else {\n        this.hide();\n      }\n    };\n\n    return LiveDisplay;\n  }(Component);\n\n  Component.registerComponent('LiveDisplay', LiveDisplay);\n\n  /**\n   * Displays the live indicator when duration is Infinity.\n   *\n   * @extends Component\n   */\n\n  var SeekToLive =\n  /*#__PURE__*/\n  function (_Button) {\n    _inheritsLoose(SeekToLive, _Button);\n\n    /**\n     * Creates an instance of this class.\n     *\n     * @param {Player} player\n     *        The `Player` that this class should be attached to.\n     *\n     * @param {Object} [options]\n     *        The key/value store of player options.\n     */\n    function SeekToLive(player, options) {\n      var _this;\n\n      _this = _Button.call(this, player, options) || this;\n\n      _this.updateLiveEdgeStatus();\n\n      if (_this.player_.liveTracker) {\n        _this.on(_this.player_.liveTracker, 'liveedgechange', _this.updateLiveEdgeStatus);\n      }\n\n      return _this;\n    }\n    /**\n     * Create the `Component`'s DOM element\n     *\n     * @return {Element}\n     *         The element that was created.\n     */\n\n\n    var _proto = SeekToLive.prototype;\n\n    _proto.createEl = function createEl$$1() {\n      var el = _Button.prototype.createEl.call(this, 'button', {\n        className: 'vjs-seek-to-live-control vjs-control'\n      });\n\n      this.textEl_ = createEl('span', {\n        className: 'vjs-seek-to-live-text',\n        innerHTML: this.localize('LIVE')\n      }, {\n        'aria-hidden': 'true'\n      });\n      el.appendChild(this.textEl_);\n      return el;\n    }\n    /**\n     * Update the state of this button if we are at the live edge\n     * or not\n     */\n    ;\n\n    _proto.updateLiveEdgeStatus = function updateLiveEdgeStatus(e) {\n      // default to live edge\n      if (!this.player_.liveTracker || this.player_.liveTracker.atLiveEdge()) {\n        this.setAttribute('aria-disabled', true);\n        this.addClass('vjs-at-live-edge');\n        this.controlText('Seek to live, currently playing live');\n      } else {\n        this.setAttribute('aria-disabled', false);\n        this.removeClass('vjs-at-live-edge');\n        this.controlText('Seek to live, currently behind live');\n      }\n    }\n    /**\n     * On click bring us as near to the live point as possible.\n     * This requires that we wait for the next `live-seekable-change`\n     * event which will happen every segment length seconds.\n     */\n    ;\n\n    _proto.handleClick = function handleClick() {\n      this.player_.liveTracker.seekToLiveEdge();\n    }\n    /**\n     * Dispose of the element and stop tracking\n     */\n    ;\n\n    _proto.dispose = function dispose() {\n      if (this.player_.liveTracker) {\n        this.off(this.player_.liveTracker, 'liveedgechange', this.updateLiveEdgeStatus);\n      }\n\n      this.textEl_ = null;\n\n      _Button.prototype.dispose.call(this);\n    };\n\n    return SeekToLive;\n  }(Button);\n\n  SeekToLive.prototype.controlText_ = 'Seek to live, currently playing live';\n  Component.registerComponent('SeekToLive', SeekToLive);\n\n  /**\n   * The base functionality for a slider. Can be vertical or horizontal.\n   * For instance the volume bar or the seek bar on a video is a slider.\n   *\n   * @extends Component\n   */\n\n  var Slider =\n  /*#__PURE__*/\n  function (_Component) {\n    _inheritsLoose(Slider, _Component);\n\n    /**\n    * Create an instance of this class\n    *\n    * @param {Player} player\n    *        The `Player` that this class should be attached to.\n    *\n    * @param {Object} [options]\n    *        The key/value store of player options.\n    */\n    function Slider(player, options) {\n      var _this;\n\n      _this = _Component.call(this, player, options) || this; // Set property names to bar to match with the child Slider class is looking for\n\n      _this.bar = _this.getChild(_this.options_.barName); // Set a horizontal or vertical class on the slider depending on the slider type\n\n      _this.vertical(!!_this.options_.vertical);\n\n      _this.enable();\n\n      return _this;\n    }\n    /**\n     * Are controls are currently enabled for this slider or not.\n     *\n     * @return {boolean}\n     *         true if controls are enabled, false otherwise\n     */\n\n\n    var _proto = Slider.prototype;\n\n    _proto.enabled = function enabled() {\n      return this.enabled_;\n    }\n    /**\n     * Enable controls for this slider if they are disabled\n     */\n    ;\n\n    _proto.enable = function enable() {\n      if (this.enabled()) {\n        return;\n      }\n\n      this.on('mousedown', this.handleMouseDown);\n      this.on('touchstart', this.handleMouseDown);\n      this.on('focus', this.handleFocus);\n      this.on('blur', this.handleBlur);\n      this.on('click', this.handleClick);\n      this.on(this.player_, 'controlsvisible', this.update);\n\n      if (this.playerEvent) {\n        this.on(this.player_, this.playerEvent, this.update);\n      }\n\n      this.removeClass('disabled');\n      this.setAttribute('tabindex', 0);\n      this.enabled_ = true;\n    }\n    /**\n     * Disable controls for this slider if they are enabled\n     */\n    ;\n\n    _proto.disable = function disable() {\n      if (!this.enabled()) {\n        return;\n      }\n\n      var doc = this.bar.el_.ownerDocument;\n      this.off('mousedown', this.handleMouseDown);\n      this.off('touchstart', this.handleMouseDown);\n      this.off('focus', this.handleFocus);\n      this.off('blur', this.handleBlur);\n      this.off('click', this.handleClick);\n      this.off(this.player_, 'controlsvisible', this.update);\n      this.off(doc, 'mousemove', this.handleMouseMove);\n      this.off(doc, 'mouseup', this.handleMouseUp);\n      this.off(doc, 'touchmove', this.handleMouseMove);\n      this.off(doc, 'touchend', this.handleMouseUp);\n      this.removeAttribute('tabindex');\n      this.addClass('disabled');\n\n      if (this.playerEvent) {\n        this.off(this.player_, this.playerEvent, this.update);\n      }\n\n      this.enabled_ = false;\n    }\n    /**\n     * Create the `Slider`s DOM element.\n     *\n     * @param {string} type\n     *        Type of element to create.\n     *\n     * @param {Object} [props={}]\n     *        List of properties in Object form.\n     *\n     * @param {Object} [attributes={}]\n     *        list of attributes in Object form.\n     *\n     * @return {Element}\n     *         The element that gets created.\n     */\n    ;\n\n    _proto.createEl = function createEl$$1(type, props, attributes) {\n      if (props === void 0) {\n        props = {};\n      }\n\n      if (attributes === void 0) {\n        attributes = {};\n      }\n\n      // Add the slider element class to all sub classes\n      props.className = props.className + ' vjs-slider';\n      props = assign({\n        tabIndex: 0\n      }, props);\n      attributes = assign({\n        'role': 'slider',\n        'aria-valuenow': 0,\n        'aria-valuemin': 0,\n        'aria-valuemax': 100,\n        'tabIndex': 0\n      }, attributes);\n      return _Component.prototype.createEl.call(this, type, props, attributes);\n    }\n    /**\n     * Handle `mousedown` or `touchstart` events on the `Slider`.\n     *\n     * @param {EventTarget~Event} event\n     *        `mousedown` or `touchstart` event that triggered this function\n     *\n     * @listens mousedown\n     * @listens touchstart\n     * @fires Slider#slideractive\n     */\n    ;\n\n    _proto.handleMouseDown = function handleMouseDown(event) {\n      var doc = this.bar.el_.ownerDocument;\n\n      if (event.type === 'mousedown') {\n        event.preventDefault();\n      } // Do not call preventDefault() on touchstart in Chrome\n      // to avoid console warnings. Use a 'touch-action: none' style\n      // instead to prevent unintented scrolling.\n      // https://developers.google.com/web/updates/2017/01/scrolling-intervention\n\n\n      if (event.type === 'touchstart' && !IS_CHROME) {\n        event.preventDefault();\n      }\n\n      blockTextSelection();\n      this.addClass('vjs-sliding');\n      /**\n       * Triggered when the slider is in an active state\n       *\n       * @event Slider#slideractive\n       * @type {EventTarget~Event}\n       */\n\n      this.trigger('slideractive');\n      this.on(doc, 'mousemove', this.handleMouseMove);\n      this.on(doc, 'mouseup', this.handleMouseUp);\n      this.on(doc, 'touchmove', this.handleMouseMove);\n      this.on(doc, 'touchend', this.handleMouseUp);\n      this.handleMouseMove(event);\n    }\n    /**\n     * Handle the `mousemove`, `touchmove`, and `mousedown` events on this `Slider`.\n     * The `mousemove` and `touchmove` events will only only trigger this function during\n     * `mousedown` and `touchstart`. This is due to {@link Slider#handleMouseDown} and\n     * {@link Slider#handleMouseUp}.\n     *\n     * @param {EventTarget~Event} event\n     *        `mousedown`, `mousemove`, `touchstart`, or `touchmove` event that triggered\n     *        this function\n     *\n     * @listens mousemove\n     * @listens touchmove\n     */\n    ;\n\n    _proto.handleMouseMove = function handleMouseMove(event) {}\n    /**\n     * Handle `mouseup` or `touchend` events on the `Slider`.\n     *\n     * @param {EventTarget~Event} event\n     *        `mouseup` or `touchend` event that triggered this function.\n     *\n     * @listens touchend\n     * @listens mouseup\n     * @fires Slider#sliderinactive\n     */\n    ;\n\n    _proto.handleMouseUp = function handleMouseUp() {\n      var doc = this.bar.el_.ownerDocument;\n      unblockTextSelection();\n      this.removeClass('vjs-sliding');\n      /**\n       * Triggered when the slider is no longer in an active state.\n       *\n       * @event Slider#sliderinactive\n       * @type {EventTarget~Event}\n       */\n\n      this.trigger('sliderinactive');\n      this.off(doc, 'mousemove', this.handleMouseMove);\n      this.off(doc, 'mouseup', this.handleMouseUp);\n      this.off(doc, 'touchmove', this.handleMouseMove);\n      this.off(doc, 'touchend', this.handleMouseUp);\n      this.update();\n    }\n    /**\n     * Update the progress bar of the `Slider`.\n     *\n     * @return {number}\n     *          The percentage of progress the progress bar represents as a\n     *          number from 0 to 1.\n     */\n    ;\n\n    _proto.update = function update() {\n      // In VolumeBar init we have a setTimeout for update that pops and update\n      // to the end of the execution stack. The player is destroyed before then\n      // update will cause an error\n      if (!this.el_) {\n        return;\n      } // If scrubbing, we could use a cached value to make the handle keep up\n      // with the user's mouse. On HTML5 browsers scrubbing is really smooth, but\n      // some flash players are slow, so we might want to utilize this later.\n      // var progress =  (this.player_.scrubbing()) ? this.player_.getCache().currentTime / this.player_.duration() : this.player_.currentTime() / this.player_.duration();\n\n\n      var progress = this.getPercent();\n      var bar = this.bar; // If there's no bar...\n\n      if (!bar) {\n        return;\n      } // Protect against no duration and other division issues\n\n\n      if (typeof progress !== 'number' || progress !== progress || progress < 0 || progress === Infinity) {\n        progress = 0;\n      } // Convert to a percentage for setting\n\n\n      var percentage = (progress * 100).toFixed(2) + '%';\n      var style = bar.el().style; // Set the new bar width or height\n\n      if (this.vertical()) {\n        style.height = percentage;\n      } else {\n        style.width = percentage;\n      }\n\n      return progress;\n    }\n    /**\n     * Calculate distance for slider\n     *\n     * @param {EventTarget~Event} event\n     *        The event that caused this function to run.\n     *\n     * @return {number}\n     *         The current position of the Slider.\n     *         - position.x for vertical `Slider`s\n     *         - position.y for horizontal `Slider`s\n     */\n    ;\n\n    _proto.calculateDistance = function calculateDistance(event) {\n      var position = getPointerPosition(this.el_, event);\n\n      if (this.vertical()) {\n        return position.y;\n      }\n\n      return position.x;\n    }\n    /**\n     * Handle a `focus` event on this `Slider`.\n     *\n     * @param {EventTarget~Event} event\n     *        The `focus` event that caused this function to run.\n     *\n     * @listens focus\n     */\n    ;\n\n    _proto.handleFocus = function handleFocus() {\n      this.on(this.bar.el_.ownerDocument, 'keydown', this.handleKeyPress);\n    }\n    /**\n     * Handle a `keydown` event on the `Slider`. Watches for left, rigth, up, and down\n     * arrow keys. This function will only be called when the slider has focus. See\n     * {@link Slider#handleFocus} and {@link Slider#handleBlur}.\n     *\n     * @param {EventTarget~Event} event\n     *        the `keydown` event that caused this function to run.\n     *\n     * @listens keydown\n     */\n    ;\n\n    _proto.handleKeyPress = function handleKeyPress(event) {\n      // Left and Down Arrows\n      if (keycode.isEventKey(event, 'Left') || keycode.isEventKey(event, 'Down')) {\n        event.preventDefault();\n        this.stepBack(); // Up and Right Arrows\n      } else if (keycode.isEventKey(event, 'Right') || keycode.isEventKey(event, 'Up')) {\n        event.preventDefault();\n        this.stepForward();\n      } else {\n        // Pass keypress handling up for unsupported keys\n        _Component.prototype.handleKeyPress.call(this, event);\n      }\n    }\n    /**\n     * Handle a `blur` event on this `Slider`.\n     *\n     * @param {EventTarget~Event} event\n     *        The `blur` event that caused this function to run.\n     *\n     * @listens blur\n     */\n    ;\n\n    _proto.handleBlur = function handleBlur() {\n      this.off(this.bar.el_.ownerDocument, 'keydown', this.handleKeyPress);\n    }\n    /**\n     * Listener for click events on slider, used to prevent clicks\n     *   from bubbling up to parent elements like button menus.\n     *\n     * @param {Object} event\n     *        Event that caused this object to run\n     */\n    ;\n\n    _proto.handleClick = function handleClick(event) {\n      event.stopImmediatePropagation();\n      event.preventDefault();\n    }\n    /**\n     * Get/set if slider is horizontal for vertical\n     *\n     * @param {boolean} [bool]\n     *        - true if slider is vertical,\n     *        - false is horizontal\n     *\n     * @return {boolean}\n     *         - true if slider is vertical, and getting\n     *         - false if the slider is horizontal, and getting\n     */\n    ;\n\n    _proto.vertical = function vertical(bool) {\n      if (bool === undefined) {\n        return this.vertical_ || false;\n      }\n\n      this.vertical_ = !!bool;\n\n      if (this.vertical_) {\n        this.addClass('vjs-slider-vertical');\n      } else {\n        this.addClass('vjs-slider-horizontal');\n      }\n    };\n\n    return Slider;\n  }(Component);\n\n  Component.registerComponent('Slider', Slider);\n\n  /**\n   * Shows loading progress\n   *\n   * @extends Component\n   */\n\n  var LoadProgressBar =\n  /*#__PURE__*/\n  function (_Component) {\n    _inheritsLoose(LoadProgressBar, _Component);\n\n    /**\n     * Creates an instance of this class.\n     *\n     * @param {Player} player\n     *        The `Player` that this class should be attached to.\n     *\n     * @param {Object} [options]\n     *        The key/value store of player options.\n     */\n    function LoadProgressBar(player, options) {\n      var _this;\n\n      _this = _Component.call(this, player, options) || this;\n      _this.partEls_ = [];\n\n      _this.on(player, 'progress', _this.update);\n\n      return _this;\n    }\n    /**\n     * Create the `Component`'s DOM element\n     *\n     * @return {Element}\n     *         The element that was created.\n     */\n\n\n    var _proto = LoadProgressBar.prototype;\n\n    _proto.createEl = function createEl$$1() {\n      return _Component.prototype.createEl.call(this, 'div', {\n        className: 'vjs-load-progress',\n        innerHTML: \"<span class=\\\"vjs-control-text\\\"><span>\" + this.localize('Loaded') + \"</span>: <span class=\\\"vjs-control-text-loaded-percentage\\\">0%</span></span>\"\n      });\n    };\n\n    _proto.dispose = function dispose() {\n      this.partEls_ = null;\n\n      _Component.prototype.dispose.call(this);\n    }\n    /**\n     * Update progress bar\n     *\n     * @param {EventTarget~Event} [event]\n     *        The `progress` event that caused this function to run.\n     *\n     * @listens Player#progress\n     */\n    ;\n\n    _proto.update = function update(event) {\n      var liveTracker = this.player_.liveTracker;\n      var buffered = this.player_.buffered();\n      var duration = liveTracker && liveTracker.isLive() ? liveTracker.seekableEnd() : this.player_.duration();\n      var bufferedEnd = this.player_.bufferedEnd();\n      var children = this.partEls_;\n      var controlTextPercentage = this.$('.vjs-control-text-loaded-percentage'); // get the percent width of a time compared to the total end\n\n      var percentify = function percentify(time, end, rounded) {\n        // no NaN\n        var percent = time / end || 0;\n        percent = (percent >= 1 ? 1 : percent) * 100;\n\n        if (rounded) {\n          percent = percent.toFixed(2);\n        }\n\n        return percent + '%';\n      }; // update the width of the progress bar\n\n\n      this.el_.style.width = percentify(bufferedEnd, duration); // update the control-text\n\n      textContent(controlTextPercentage, percentify(bufferedEnd, duration, true)); // add child elements to represent the individual buffered time ranges\n\n      for (var i = 0; i < buffered.length; i++) {\n        var start = buffered.start(i);\n        var end = buffered.end(i);\n        var part = children[i];\n\n        if (!part) {\n          part = this.el_.appendChild(createEl());\n          children[i] = part;\n        } // set the percent based on the width of the progress bar (bufferedEnd)\n\n\n        part.style.left = percentify(start, bufferedEnd);\n        part.style.width = percentify(end - start, bufferedEnd);\n      } // remove unused buffered range elements\n\n\n      for (var _i = children.length; _i > buffered.length; _i--) {\n        this.el_.removeChild(children[_i - 1]);\n      }\n\n      children.length = buffered.length;\n    };\n\n    return LoadProgressBar;\n  }(Component);\n\n  Component.registerComponent('LoadProgressBar', LoadProgressBar);\n\n  /**\n   * Time tooltips display a time above the progress bar.\n   *\n   * @extends Component\n   */\n\n  var TimeTooltip =\n  /*#__PURE__*/\n  function (_Component) {\n    _inheritsLoose(TimeTooltip, _Component);\n\n    function TimeTooltip() {\n      return _Component.apply(this, arguments) || this;\n    }\n\n    var _proto = TimeTooltip.prototype;\n\n    /**\n     * Create the time tooltip DOM element\n     *\n     * @return {Element}\n     *         The element that was created.\n     */\n    _proto.createEl = function createEl$$1() {\n      return _Component.prototype.createEl.call(this, 'div', {\n        className: 'vjs-time-tooltip'\n      }, {\n        'aria-hidden': 'true'\n      });\n    }\n    /**\n     * Updates the position of the time tooltip relative to the `SeekBar`.\n     *\n     * @param {Object} seekBarRect\n     *        The `ClientRect` for the {@link SeekBar} element.\n     *\n     * @param {number} seekBarPoint\n     *        A number from 0 to 1, representing a horizontal reference point\n     *        from the left edge of the {@link SeekBar}\n     */\n    ;\n\n    _proto.update = function update(seekBarRect, seekBarPoint, content) {\n      var tooltipRect = getBoundingClientRect(this.el_);\n      var playerRect = getBoundingClientRect(this.player_.el());\n      var seekBarPointPx = seekBarRect.width * seekBarPoint; // do nothing if either rect isn't available\n      // for example, if the player isn't in the DOM for testing\n\n      if (!playerRect || !tooltipRect) {\n        return;\n      } // This is the space left of the `seekBarPoint` available within the bounds\n      // of the player. We calculate any gap between the left edge of the player\n      // and the left edge of the `SeekBar` and add the number of pixels in the\n      // `SeekBar` before hitting the `seekBarPoint`\n\n\n      var spaceLeftOfPoint = seekBarRect.left - playerRect.left + seekBarPointPx; // This is the space right of the `seekBarPoint` available within the bounds\n      // of the player. We calculate the number of pixels from the `seekBarPoint`\n      // to the right edge of the `SeekBar` and add to that any gap between the\n      // right edge of the `SeekBar` and the player.\n\n      var spaceRightOfPoint = seekBarRect.width - seekBarPointPx + (playerRect.right - seekBarRect.right); // This is the number of pixels by which the tooltip will need to be pulled\n      // further to the right to center it over the `seekBarPoint`.\n\n      var pullTooltipBy = tooltipRect.width / 2; // Adjust the `pullTooltipBy` distance to the left or right depending on\n      // the results of the space calculations above.\n\n      if (spaceLeftOfPoint < pullTooltipBy) {\n        pullTooltipBy += pullTooltipBy - spaceLeftOfPoint;\n      } else if (spaceRightOfPoint < pullTooltipBy) {\n        pullTooltipBy = spaceRightOfPoint;\n      } // Due to the imprecision of decimal/ratio based calculations and varying\n      // rounding behaviors, there are cases where the spacing adjustment is off\n      // by a pixel or two. This adds insurance to these calculations.\n\n\n      if (pullTooltipBy < 0) {\n        pullTooltipBy = 0;\n      } else if (pullTooltipBy > tooltipRect.width) {\n        pullTooltipBy = tooltipRect.width;\n      }\n\n      this.el_.style.right = \"-\" + pullTooltipBy + \"px\";\n      textContent(this.el_, content);\n    }\n    /**\n     * Updates the position of the time tooltip relative to the `SeekBar`.\n     *\n     * @param {Object} seekBarRect\n     *        The `ClientRect` for the {@link SeekBar} element.\n     *\n     * @param {number} seekBarPoint\n     *        A number from 0 to 1, representing a horizontal reference point\n     *        from the left edge of the {@link SeekBar}\n     *\n     * @param {number} time\n     *        The time to update the tooltip to, not used during live playback\n     *\n     * @param {Function} cb\n     *        A function that will be called during the request animation frame\n     *        for tooltips that need to do additional animations from the default\n     */\n    ;\n\n    _proto.updateTime = function updateTime(seekBarRect, seekBarPoint, time, cb) {\n      var _this = this;\n\n      // If there is an existing rAF ID, cancel it so we don't over-queue.\n      if (this.rafId_) {\n        this.cancelAnimationFrame(this.rafId_);\n      }\n\n      this.rafId_ = this.requestAnimationFrame(function () {\n        var content;\n\n        var duration = _this.player_.duration();\n\n        if (_this.player_.liveTracker && _this.player_.liveTracker.isLive()) {\n          var liveWindow = _this.player_.liveTracker.liveWindow();\n\n          var secondsBehind = liveWindow - seekBarPoint * liveWindow;\n          content = (secondsBehind < 1 ? '' : '-') + formatTime(secondsBehind, liveWindow);\n        } else {\n          content = formatTime(time, duration);\n        }\n\n        _this.update(seekBarRect, seekBarPoint, content);\n\n        if (cb) {\n          cb();\n        }\n      });\n    };\n\n    return TimeTooltip;\n  }(Component);\n\n  Component.registerComponent('TimeTooltip', TimeTooltip);\n\n  /**\n   * Used by {@link SeekBar} to display media playback progress as part of the\n   * {@link ProgressControl}.\n   *\n   * @extends Component\n   */\n\n  var PlayProgressBar =\n  /*#__PURE__*/\n  function (_Component) {\n    _inheritsLoose(PlayProgressBar, _Component);\n\n    function PlayProgressBar() {\n      return _Component.apply(this, arguments) || this;\n    }\n\n    var _proto = PlayProgressBar.prototype;\n\n    /**\n     * Create the the DOM element for this class.\n     *\n     * @return {Element}\n     *         The element that was created.\n     */\n    _proto.createEl = function createEl() {\n      return _Component.prototype.createEl.call(this, 'div', {\n        className: 'vjs-play-progress vjs-slider-bar'\n      }, {\n        'aria-hidden': 'true'\n      });\n    }\n    /**\n     * Enqueues updates to its own DOM as well as the DOM of its\n     * {@link TimeTooltip} child.\n     *\n     * @param {Object} seekBarRect\n     *        The `ClientRect` for the {@link SeekBar} element.\n     *\n     * @param {number} seekBarPoint\n     *        A number from 0 to 1, representing a horizontal reference point\n     *        from the left edge of the {@link SeekBar}\n     */\n    ;\n\n    _proto.update = function update(seekBarRect, seekBarPoint) {\n      var timeTooltip = this.getChild('timeTooltip');\n\n      if (!timeTooltip) {\n        return;\n      }\n\n      var time = this.player_.scrubbing() ? this.player_.getCache().currentTime : this.player_.currentTime();\n      timeTooltip.updateTime(seekBarRect, seekBarPoint, time);\n    };\n\n    return PlayProgressBar;\n  }(Component);\n  /**\n   * Default options for {@link PlayProgressBar}.\n   *\n   * @type {Object}\n   * @private\n   */\n\n\n  PlayProgressBar.prototype.options_ = {\n    children: []\n  }; // Time tooltips should not be added to a player on mobile devices\n\n  if (!IS_IOS && !IS_ANDROID) {\n    PlayProgressBar.prototype.options_.children.push('timeTooltip');\n  }\n\n  Component.registerComponent('PlayProgressBar', PlayProgressBar);\n\n  /**\n   * The {@link MouseTimeDisplay} component tracks mouse movement over the\n   * {@link ProgressControl}. It displays an indicator and a {@link TimeTooltip}\n   * indicating the time which is represented by a given point in the\n   * {@link ProgressControl}.\n   *\n   * @extends Component\n   */\n\n  var MouseTimeDisplay =\n  /*#__PURE__*/\n  function (_Component) {\n    _inheritsLoose(MouseTimeDisplay, _Component);\n\n    /**\n     * Creates an instance of this class.\n     *\n     * @param {Player} player\n     *        The {@link Player} that this class should be attached to.\n     *\n     * @param {Object} [options]\n     *        The key/value store of player options.\n     */\n    function MouseTimeDisplay(player, options) {\n      var _this;\n\n      _this = _Component.call(this, player, options) || this;\n      _this.update = throttle(bind(_assertThisInitialized(_assertThisInitialized(_this)), _this.update), 25);\n      return _this;\n    }\n    /**\n     * Create the DOM element for this class.\n     *\n     * @return {Element}\n     *         The element that was created.\n     */\n\n\n    var _proto = MouseTimeDisplay.prototype;\n\n    _proto.createEl = function createEl() {\n      return _Component.prototype.createEl.call(this, 'div', {\n        className: 'vjs-mouse-display'\n      });\n    }\n    /**\n     * Enqueues updates to its own DOM as well as the DOM of its\n     * {@link TimeTooltip} child.\n     *\n     * @param {Object} seekBarRect\n     *        The `ClientRect` for the {@link SeekBar} element.\n     *\n     * @param {number} seekBarPoint\n     *        A number from 0 to 1, representing a horizontal reference point\n     *        from the left edge of the {@link SeekBar}\n     */\n    ;\n\n    _proto.update = function update(seekBarRect, seekBarPoint) {\n      var _this2 = this;\n\n      var time = seekBarPoint * this.player_.duration();\n      this.getChild('timeTooltip').updateTime(seekBarRect, seekBarPoint, time, function () {\n        _this2.el_.style.left = seekBarRect.width * seekBarPoint + \"px\";\n      });\n    };\n\n    return MouseTimeDisplay;\n  }(Component);\n  /**\n   * Default options for `MouseTimeDisplay`\n   *\n   * @type {Object}\n   * @private\n   */\n\n\n  MouseTimeDisplay.prototype.options_ = {\n    children: ['timeTooltip']\n  };\n  Component.registerComponent('MouseTimeDisplay', MouseTimeDisplay);\n\n  var STEP_SECONDS = 5; // The multiplier of STEP_SECONDS that PgUp/PgDown move the timeline.\n\n  var PAGE_KEY_MULTIPLIER = 12; // The interval at which the bar should update as it progresses.\n\n  var UPDATE_REFRESH_INTERVAL = 30;\n  /**\n   * Seek bar and container for the progress bars. Uses {@link PlayProgressBar}\n   * as its `bar`.\n   *\n   * @extends Slider\n   */\n\n  var SeekBar =\n  /*#__PURE__*/\n  function (_Slider) {\n    _inheritsLoose(SeekBar, _Slider);\n\n    /**\n     * Creates an instance of this class.\n     *\n     * @param {Player} player\n     *        The `Player` that this class should be attached to.\n     *\n     * @param {Object} [options]\n     *        The key/value store of player options.\n     */\n    function SeekBar(player, options) {\n      var _this;\n\n      _this = _Slider.call(this, player, options) || this;\n\n      _this.setEventHandlers_();\n\n      return _this;\n    }\n    /**\n     * Sets the event handlers\n     *\n     * @private\n     */\n\n\n    var _proto = SeekBar.prototype;\n\n    _proto.setEventHandlers_ = function setEventHandlers_() {\n      var _this2 = this;\n\n      this.update = throttle(bind(this, this.update), UPDATE_REFRESH_INTERVAL);\n      this.on(this.player_, 'timeupdate', this.update);\n      this.on(this.player_, 'ended', this.handleEnded);\n      this.on(this.player_, 'durationchange', this.update);\n\n      if (this.player_.liveTracker) {\n        this.on(this.player_.liveTracker, 'liveedgechange', this.update);\n      } // when playing, let's ensure we smoothly update the play progress bar\n      // via an interval\n\n\n      this.updateInterval = null;\n      this.on(this.player_, ['playing'], function () {\n        _this2.clearInterval(_this2.updateInterval);\n\n        _this2.updateInterval = _this2.setInterval(function () {\n          _this2.requestAnimationFrame(function () {\n            _this2.update();\n          });\n        }, UPDATE_REFRESH_INTERVAL);\n      });\n      this.on(this.player_, ['ended', 'pause', 'waiting'], function (e) {\n        if (_this2.player_.liveTracker && _this2.player_.liveTracker.isLive() && e.type !== 'ended') {\n          return;\n        }\n\n        _this2.clearInterval(_this2.updateInterval);\n      });\n      this.on(this.player_, ['timeupdate', 'ended'], this.update);\n    }\n    /**\n     * Create the `Component`'s DOM element\n     *\n     * @return {Element}\n     *         The element that was created.\n     */\n    ;\n\n    _proto.createEl = function createEl$$1() {\n      return _Slider.prototype.createEl.call(this, 'div', {\n        className: 'vjs-progress-holder'\n      }, {\n        'aria-label': this.localize('Progress Bar')\n      });\n    }\n    /**\n     * This function updates the play progress bar and accessibility\n     * attributes to whatever is passed in.\n     *\n     * @param {number} currentTime\n     *        The currentTime value that should be used for accessibility\n     *\n     * @param {number} percent\n     *        The percentage as a decimal that the bar should be filled from 0-1.\n     *\n     * @private\n     */\n    ;\n\n    _proto.update_ = function update_(currentTime, percent) {\n      var liveTracker = this.player_.liveTracker;\n      var duration = this.player_.duration();\n\n      if (liveTracker && liveTracker.isLive()) {\n        duration = this.player_.liveTracker.liveCurrentTime();\n      } // machine readable value of progress bar (percentage complete)\n\n\n      this.el_.setAttribute('aria-valuenow', (percent * 100).toFixed(2)); // human readable value of progress bar (time complete)\n\n      this.el_.setAttribute('aria-valuetext', this.localize('progress bar timing: currentTime={1} duration={2}', [formatTime(currentTime, duration), formatTime(duration, duration)], '{1} of {2}')); // Update the `PlayProgressBar`.\n\n      this.bar.update(getBoundingClientRect(this.el_), percent);\n    }\n    /**\n     * Update the seek bar's UI.\n     *\n     * @param {EventTarget~Event} [event]\n     *        The `timeupdate` or `ended` event that caused this to run.\n     *\n     * @listens Player#timeupdate\n     *\n     * @return {number}\n     *          The current percent at a number from 0-1\n     */\n    ;\n\n    _proto.update = function update(event) {\n      var percent = _Slider.prototype.update.call(this);\n\n      this.update_(this.getCurrentTime_(), percent);\n      return percent;\n    }\n    /**\n     * Get the value of current time but allows for smooth scrubbing,\n     * when player can't keep up.\n     *\n     * @return {number}\n     *         The current time value to display\n     *\n     * @private\n     */\n    ;\n\n    _proto.getCurrentTime_ = function getCurrentTime_() {\n      return this.player_.scrubbing() ? this.player_.getCache().currentTime : this.player_.currentTime();\n    }\n    /**\n     * We want the seek bar to be full on ended\n     * no matter what the actual internal values are. so we force it.\n     *\n     * @param {EventTarget~Event} [event]\n     *        The `timeupdate` or `ended` event that caused this to run.\n     *\n     * @listens Player#ended\n     */\n    ;\n\n    _proto.handleEnded = function handleEnded(event) {\n      this.update_(this.player_.duration(), 1);\n    }\n    /**\n     * Get the percentage of media played so far.\n     *\n     * @return {number}\n     *         The percentage of media played so far (0 to 1).\n     */\n    ;\n\n    _proto.getPercent = function getPercent() {\n      var currentTime = this.getCurrentTime_();\n      var percent;\n      var liveTracker = this.player_.liveTracker;\n\n      if (liveTracker && liveTracker.isLive()) {\n        percent = (currentTime - liveTracker.seekableStart()) / liveTracker.liveWindow(); // prevent the percent from changing at the live edge\n\n        if (liveTracker.atLiveEdge()) {\n          percent = 1;\n        }\n      } else {\n        percent = currentTime / this.player_.duration();\n      }\n\n      return percent >= 1 ? 1 : percent || 0;\n    }\n    /**\n     * Handle mouse down on seek bar\n     *\n     * @param {EventTarget~Event} event\n     *        The `mousedown` event that caused this to run.\n     *\n     * @listens mousedown\n     */\n    ;\n\n    _proto.handleMouseDown = function handleMouseDown(event) {\n      if (!isSingleLeftClick(event)) {\n        return;\n      } // Stop event propagation to prevent double fire in progress-control.js\n\n\n      event.stopPropagation();\n      this.player_.scrubbing(true);\n      this.videoWasPlaying = !this.player_.paused();\n      this.player_.pause();\n\n      _Slider.prototype.handleMouseDown.call(this, event);\n    }\n    /**\n     * Handle mouse move on seek bar\n     *\n     * @param {EventTarget~Event} event\n     *        The `mousemove` event that caused this to run.\n     *\n     * @listens mousemove\n     */\n    ;\n\n    _proto.handleMouseMove = function handleMouseMove(event) {\n      if (!isSingleLeftClick(event)) {\n        return;\n      }\n\n      var newTime;\n      var distance = this.calculateDistance(event);\n      var liveTracker = this.player_.liveTracker;\n\n      if (!liveTracker || !liveTracker.isLive()) {\n        newTime = distance * this.player_.duration(); // Don't let video end while scrubbing.\n\n        if (newTime === this.player_.duration()) {\n          newTime = newTime - 0.1;\n        }\n      } else {\n        var seekableStart = liveTracker.seekableStart();\n        var seekableEnd = liveTracker.liveCurrentTime();\n        newTime = seekableStart + distance * liveTracker.liveWindow(); // Don't let video end while scrubbing.\n\n        if (newTime >= seekableEnd) {\n          newTime = seekableEnd;\n        } // Compensate for precision differences so that currentTime is not less\n        // than seekable start\n\n\n        if (newTime <= seekableStart) {\n          newTime = seekableStart + 0.1;\n        } // On android seekableEnd can be Infinity sometimes,\n        // this will cause newTime to be Infinity, which is\n        // not a valid currentTime.\n\n\n        if (newTime === Infinity) {\n          return;\n        }\n      } // Set new time (tell player to seek to new time)\n\n\n      this.player_.currentTime(newTime);\n    };\n\n    _proto.enable = function enable() {\n      _Slider.prototype.enable.call(this);\n\n      var mouseTimeDisplay = this.getChild('mouseTimeDisplay');\n\n      if (!mouseTimeDisplay) {\n        return;\n      }\n\n      mouseTimeDisplay.show();\n    };\n\n    _proto.disable = function disable() {\n      _Slider.prototype.disable.call(this);\n\n      var mouseTimeDisplay = this.getChild('mouseTimeDisplay');\n\n      if (!mouseTimeDisplay) {\n        return;\n      }\n\n      mouseTimeDisplay.hide();\n    }\n    /**\n     * Handle mouse up on seek bar\n     *\n     * @param {EventTarget~Event} event\n     *        The `mouseup` event that caused this to run.\n     *\n     * @listens mouseup\n     */\n    ;\n\n    _proto.handleMouseUp = function handleMouseUp(event) {\n      _Slider.prototype.handleMouseUp.call(this, event); // Stop event propagation to prevent double fire in progress-control.js\n\n\n      if (event) {\n        event.stopPropagation();\n      }\n\n      this.player_.scrubbing(false);\n      /**\n       * Trigger timeupdate because we're done seeking and the time has changed.\n       * This is particularly useful for if the player is paused to time the time displays.\n       *\n       * @event Tech#timeupdate\n       * @type {EventTarget~Event}\n       */\n\n      this.player_.trigger({\n        type: 'timeupdate',\n        target: this,\n        manuallyTriggered: true\n      });\n\n      if (this.videoWasPlaying) {\n        silencePromise(this.player_.play());\n      }\n    }\n    /**\n     * Move more quickly fast forward for keyboard-only users\n     */\n    ;\n\n    _proto.stepForward = function stepForward() {\n      this.player_.currentTime(this.player_.currentTime() + STEP_SECONDS);\n    }\n    /**\n     * Move more quickly rewind for keyboard-only users\n     */\n    ;\n\n    _proto.stepBack = function stepBack() {\n      this.player_.currentTime(this.player_.currentTime() - STEP_SECONDS);\n    }\n    /**\n     * Toggles the playback state of the player\n     * This gets called when enter or space is used on the seekbar\n     *\n     * @param {EventTarget~Event} event\n     *        The `keydown` event that caused this function to be called\n     *\n     */\n    ;\n\n    _proto.handleAction = function handleAction(event) {\n      if (this.player_.paused()) {\n        this.player_.play();\n      } else {\n        this.player_.pause();\n      }\n    }\n    /**\n     * Called when this SeekBar has focus and a key gets pressed down.\n     * Supports the following keys:\n     *\n     *   Space or Enter key fire a click event\n     *   Home key moves to start of the timeline\n     *   End key moves to end of the timeline\n     *   Digit \"0\" through \"9\" keys move to 0%, 10% ... 80%, 90% of the timeline\n     *   PageDown key moves back a larger step than ArrowDown\n     *   PageUp key moves forward a large step\n     *\n     * @param {EventTarget~Event} event\n     *        The `keydown` event that caused this function to be called.\n     *\n     * @listens keydown\n     */\n    ;\n\n    _proto.handleKeyPress = function handleKeyPress(event) {\n      if (keycode.isEventKey(event, 'Space') || keycode.isEventKey(event, 'Enter')) {\n        event.preventDefault();\n        this.handleAction(event);\n      } else if (keycode.isEventKey(event, 'Home')) {\n        event.preventDefault();\n        this.player_.currentTime(0);\n      } else if (keycode.isEventKey(event, 'End')) {\n        event.preventDefault();\n        this.player_.currentTime(this.player_.duration());\n      } else if (/^[0-9]$/.test(keycode(event))) {\n        event.preventDefault();\n        var gotoFraction = (keycode.codes[keycode(event)] - keycode.codes['0']) * 10.0 / 100.0;\n        this.player_.currentTime(this.player_.duration() * gotoFraction);\n      } else if (keycode.isEventKey(event, 'PgDn')) {\n        event.preventDefault();\n        this.player_.currentTime(this.player_.currentTime() - STEP_SECONDS * PAGE_KEY_MULTIPLIER);\n      } else if (keycode.isEventKey(event, 'PgUp')) {\n        event.preventDefault();\n        this.player_.currentTime(this.player_.currentTime() + STEP_SECONDS * PAGE_KEY_MULTIPLIER);\n      } else {\n        // Pass keypress handling up for unsupported keys\n        _Slider.prototype.handleKeyPress.call(this, event);\n      }\n    };\n\n    return SeekBar;\n  }(Slider);\n  /**\n   * Default options for the `SeekBar`\n   *\n   * @type {Object}\n   * @private\n   */\n\n\n  SeekBar.prototype.options_ = {\n    children: ['loadProgressBar', 'playProgressBar'],\n    barName: 'playProgressBar'\n  }; // MouseTimeDisplay tooltips should not be added to a player on mobile devices\n\n  if (!IS_IOS && !IS_ANDROID) {\n    SeekBar.prototype.options_.children.splice(1, 0, 'mouseTimeDisplay');\n  }\n  /**\n   * Call the update event for this Slider when this event happens on the player.\n   *\n   * @type {string}\n   */\n\n\n  SeekBar.prototype.playerEvent = 'timeupdate';\n  Component.registerComponent('SeekBar', SeekBar);\n\n  /**\n   * The Progress Control component contains the seek bar, load progress,\n   * and play progress.\n   *\n   * @extends Component\n   */\n\n  var ProgressControl =\n  /*#__PURE__*/\n  function (_Component) {\n    _inheritsLoose(ProgressControl, _Component);\n\n    /**\n     * Creates an instance of this class.\n     *\n     * @param {Player} player\n     *        The `Player` that this class should be attached to.\n     *\n     * @param {Object} [options]\n     *        The key/value store of player options.\n     */\n    function ProgressControl(player, options) {\n      var _this;\n\n      _this = _Component.call(this, player, options) || this;\n      _this.handleMouseMove = throttle(bind(_assertThisInitialized(_assertThisInitialized(_this)), _this.handleMouseMove), 25);\n      _this.throttledHandleMouseSeek = throttle(bind(_assertThisInitialized(_assertThisInitialized(_this)), _this.handleMouseSeek), 25);\n\n      _this.enable();\n\n      return _this;\n    }\n    /**\n     * Create the `Component`'s DOM element\n     *\n     * @return {Element}\n     *         The element that was created.\n     */\n\n\n    var _proto = ProgressControl.prototype;\n\n    _proto.createEl = function createEl$$1() {\n      return _Component.prototype.createEl.call(this, 'div', {\n        className: 'vjs-progress-control vjs-control'\n      });\n    }\n    /**\n     * When the mouse moves over the `ProgressControl`, the pointer position\n     * gets passed down to the `MouseTimeDisplay` component.\n     *\n     * @param {EventTarget~Event} event\n     *        The `mousemove` event that caused this function to run.\n     *\n     * @listen mousemove\n     */\n    ;\n\n    _proto.handleMouseMove = function handleMouseMove(event) {\n      var seekBar = this.getChild('seekBar');\n\n      if (seekBar) {\n        var mouseTimeDisplay = seekBar.getChild('mouseTimeDisplay');\n        var seekBarEl = seekBar.el();\n        var seekBarRect = getBoundingClientRect(seekBarEl);\n        var seekBarPoint = getPointerPosition(seekBarEl, event).x; // The default skin has a gap on either side of the `SeekBar`. This means\n        // that it's possible to trigger this behavior outside the boundaries of\n        // the `SeekBar`. This ensures we stay within it at all times.\n\n        if (seekBarPoint > 1) {\n          seekBarPoint = 1;\n        } else if (seekBarPoint < 0) {\n          seekBarPoint = 0;\n        }\n\n        if (mouseTimeDisplay) {\n          mouseTimeDisplay.update(seekBarRect, seekBarPoint);\n        }\n      }\n    }\n    /**\n     * A throttled version of the {@link ProgressControl#handleMouseSeek} listener.\n     *\n     * @method ProgressControl#throttledHandleMouseSeek\n     * @param {EventTarget~Event} event\n     *        The `mousemove` event that caused this function to run.\n     *\n     * @listen mousemove\n     * @listen touchmove\n     */\n\n    /**\n     * Handle `mousemove` or `touchmove` events on the `ProgressControl`.\n     *\n     * @param {EventTarget~Event} event\n     *        `mousedown` or `touchstart` event that triggered this function\n     *\n     * @listens mousemove\n     * @listens touchmove\n     */\n    ;\n\n    _proto.handleMouseSeek = function handleMouseSeek(event) {\n      var seekBar = this.getChild('seekBar');\n\n      if (seekBar) {\n        seekBar.handleMouseMove(event);\n      }\n    }\n    /**\n     * Are controls are currently enabled for this progress control.\n     *\n     * @return {boolean}\n     *         true if controls are enabled, false otherwise\n     */\n    ;\n\n    _proto.enabled = function enabled() {\n      return this.enabled_;\n    }\n    /**\n     * Disable all controls on the progress control and its children\n     */\n    ;\n\n    _proto.disable = function disable() {\n      this.children().forEach(function (child) {\n        return child.disable && child.disable();\n      });\n\n      if (!this.enabled()) {\n        return;\n      }\n\n      this.off(['mousedown', 'touchstart'], this.handleMouseDown);\n      this.off(this.el_, 'mousemove', this.handleMouseMove);\n      this.handleMouseUp();\n      this.addClass('disabled');\n      this.enabled_ = false;\n    }\n    /**\n     * Enable all controls on the progress control and its children\n     */\n    ;\n\n    _proto.enable = function enable() {\n      this.children().forEach(function (child) {\n        return child.enable && child.enable();\n      });\n\n      if (this.enabled()) {\n        return;\n      }\n\n      this.on(['mousedown', 'touchstart'], this.handleMouseDown);\n      this.on(this.el_, 'mousemove', this.handleMouseMove);\n      this.removeClass('disabled');\n      this.enabled_ = true;\n    }\n    /**\n     * Handle `mousedown` or `touchstart` events on the `ProgressControl`.\n     *\n     * @param {EventTarget~Event} event\n     *        `mousedown` or `touchstart` event that triggered this function\n     *\n     * @listens mousedown\n     * @listens touchstart\n     */\n    ;\n\n    _proto.handleMouseDown = function handleMouseDown(event) {\n      var doc = this.el_.ownerDocument;\n      var seekBar = this.getChild('seekBar');\n\n      if (seekBar) {\n        seekBar.handleMouseDown(event);\n      }\n\n      this.on(doc, 'mousemove', this.throttledHandleMouseSeek);\n      this.on(doc, 'touchmove', this.throttledHandleMouseSeek);\n      this.on(doc, 'mouseup', this.handleMouseUp);\n      this.on(doc, 'touchend', this.handleMouseUp);\n    }\n    /**\n     * Handle `mouseup` or `touchend` events on the `ProgressControl`.\n     *\n     * @param {EventTarget~Event} event\n     *        `mouseup` or `touchend` event that triggered this function.\n     *\n     * @listens touchend\n     * @listens mouseup\n     */\n    ;\n\n    _proto.handleMouseUp = function handleMouseUp(event) {\n      var doc = this.el_.ownerDocument;\n      var seekBar = this.getChild('seekBar');\n\n      if (seekBar) {\n        seekBar.handleMouseUp(event);\n      }\n\n      this.off(doc, 'mousemove', this.throttledHandleMouseSeek);\n      this.off(doc, 'touchmove', this.throttledHandleMouseSeek);\n      this.off(doc, 'mouseup', this.handleMouseUp);\n      this.off(doc, 'touchend', this.handleMouseUp);\n    };\n\n    return ProgressControl;\n  }(Component);\n  /**\n   * Default options for `ProgressControl`\n   *\n   * @type {Object}\n   * @private\n   */\n\n\n  ProgressControl.prototype.options_ = {\n    children: ['seekBar']\n  };\n  Component.registerComponent('ProgressControl', ProgressControl);\n\n  /**\n   * Toggle fullscreen video\n   *\n   * @extends Button\n   */\n\n  var FullscreenToggle =\n  /*#__PURE__*/\n  function (_Button) {\n    _inheritsLoose(FullscreenToggle, _Button);\n\n    /**\n     * Creates an instance of this class.\n     *\n     * @param {Player} player\n     *        The `Player` that this class should be attached to.\n     *\n     * @param {Object} [options]\n     *        The key/value store of player options.\n     */\n    function FullscreenToggle(player, options) {\n      var _this;\n\n      _this = _Button.call(this, player, options) || this;\n\n      _this.on(player, 'fullscreenchange', _this.handleFullscreenChange);\n\n      if (document[FullscreenApi.fullscreenEnabled] === false) {\n        _this.disable();\n      }\n\n      return _this;\n    }\n    /**\n     * Builds the default DOM `className`.\n     *\n     * @return {string}\n     *         The DOM `className` for this object.\n     */\n\n\n    var _proto = FullscreenToggle.prototype;\n\n    _proto.buildCSSClass = function buildCSSClass() {\n      return \"vjs-fullscreen-control \" + _Button.prototype.buildCSSClass.call(this);\n    }\n    /**\n     * Handles fullscreenchange on the player and change control text accordingly.\n     *\n     * @param {EventTarget~Event} [event]\n     *        The {@link Player#fullscreenchange} event that caused this function to be\n     *        called.\n     *\n     * @listens Player#fullscreenchange\n     */\n    ;\n\n    _proto.handleFullscreenChange = function handleFullscreenChange(event) {\n      if (this.player_.isFullscreen()) {\n        this.controlText('Non-Fullscreen');\n      } else {\n        this.controlText('Fullscreen');\n      }\n    }\n    /**\n     * This gets called when an `FullscreenToggle` is \"clicked\". See\n     * {@link ClickableComponent} for more detailed information on what a click can be.\n     *\n     * @param {EventTarget~Event} [event]\n     *        The `keydown`, `tap`, or `click` event that caused this function to be\n     *        called.\n     *\n     * @listens tap\n     * @listens click\n     */\n    ;\n\n    _proto.handleClick = function handleClick(event) {\n      if (!this.player_.isFullscreen()) {\n        this.player_.requestFullscreen();\n      } else {\n        this.player_.exitFullscreen();\n      }\n    };\n\n    return FullscreenToggle;\n  }(Button);\n  /**\n   * The text that should display over the `FullscreenToggle`s controls. Added for localization.\n   *\n   * @type {string}\n   * @private\n   */\n\n\n  FullscreenToggle.prototype.controlText_ = 'Fullscreen';\n  Component.registerComponent('FullscreenToggle', FullscreenToggle);\n\n  /**\n   * Check if volume control is supported and if it isn't hide the\n   * `Component` that was passed  using the `vjs-hidden` class.\n   *\n   * @param {Component} self\n   *        The component that should be hidden if volume is unsupported\n   *\n   * @param {Player} player\n   *        A reference to the player\n   *\n   * @private\n   */\n  var checkVolumeSupport = function checkVolumeSupport(self, player) {\n    // hide volume controls when they're not supported by the current tech\n    if (player.tech_ && !player.tech_.featuresVolumeControl) {\n      self.addClass('vjs-hidden');\n    }\n\n    self.on(player, 'loadstart', function () {\n      if (!player.tech_.featuresVolumeControl) {\n        self.addClass('vjs-hidden');\n      } else {\n        self.removeClass('vjs-hidden');\n      }\n    });\n  };\n\n  /**\n   * Shows volume level\n   *\n   * @extends Component\n   */\n\n  var VolumeLevel =\n  /*#__PURE__*/\n  function (_Component) {\n    _inheritsLoose(VolumeLevel, _Component);\n\n    function VolumeLevel() {\n      return _Component.apply(this, arguments) || this;\n    }\n\n    var _proto = VolumeLevel.prototype;\n\n    /**\n     * Create the `Component`'s DOM element\n     *\n     * @return {Element}\n     *         The element that was created.\n     */\n    _proto.createEl = function createEl() {\n      return _Component.prototype.createEl.call(this, 'div', {\n        className: 'vjs-volume-level',\n        innerHTML: '<span class=\"vjs-control-text\"></span>'\n      });\n    };\n\n    return VolumeLevel;\n  }(Component);\n\n  Component.registerComponent('VolumeLevel', VolumeLevel);\n\n  /**\n   * The bar that contains the volume level and can be clicked on to adjust the level\n   *\n   * @extends Slider\n   */\n\n  var VolumeBar =\n  /*#__PURE__*/\n  function (_Slider) {\n    _inheritsLoose(VolumeBar, _Slider);\n\n    /**\n     * Creates an instance of this class.\n     *\n     * @param {Player} player\n     *        The `Player` that this class should be attached to.\n     *\n     * @param {Object} [options]\n     *        The key/value store of player options.\n     */\n    function VolumeBar(player, options) {\n      var _this;\n\n      _this = _Slider.call(this, player, options) || this;\n\n      _this.on('slideractive', _this.updateLastVolume_);\n\n      _this.on(player, 'volumechange', _this.updateARIAAttributes);\n\n      player.ready(function () {\n        return _this.updateARIAAttributes();\n      });\n      return _this;\n    }\n    /**\n     * Create the `Component`'s DOM element\n     *\n     * @return {Element}\n     *         The element that was created.\n     */\n\n\n    var _proto = VolumeBar.prototype;\n\n    _proto.createEl = function createEl$$1() {\n      return _Slider.prototype.createEl.call(this, 'div', {\n        className: 'vjs-volume-bar vjs-slider-bar'\n      }, {\n        'aria-label': this.localize('Volume Level'),\n        'aria-live': 'polite'\n      });\n    }\n    /**\n     * Handle mouse down on volume bar\n     *\n     * @param {EventTarget~Event} event\n     *        The `mousedown` event that caused this to run.\n     *\n     * @listens mousedown\n     */\n    ;\n\n    _proto.handleMouseDown = function handleMouseDown(event) {\n      if (!isSingleLeftClick(event)) {\n        return;\n      }\n\n      _Slider.prototype.handleMouseDown.call(this, event);\n    }\n    /**\n     * Handle movement events on the {@link VolumeMenuButton}.\n     *\n     * @param {EventTarget~Event} event\n     *        The event that caused this function to run.\n     *\n     * @listens mousemove\n     */\n    ;\n\n    _proto.handleMouseMove = function handleMouseMove(event) {\n      if (!isSingleLeftClick(event)) {\n        return;\n      }\n\n      this.checkMuted();\n      this.player_.volume(this.calculateDistance(event));\n    }\n    /**\n     * If the player is muted unmute it.\n     */\n    ;\n\n    _proto.checkMuted = function checkMuted() {\n      if (this.player_.muted()) {\n        this.player_.muted(false);\n      }\n    }\n    /**\n     * Get percent of volume level\n     *\n     * @return {number}\n     *         Volume level percent as a decimal number.\n     */\n    ;\n\n    _proto.getPercent = function getPercent() {\n      if (this.player_.muted()) {\n        return 0;\n      }\n\n      return this.player_.volume();\n    }\n    /**\n     * Increase volume level for keyboard users\n     */\n    ;\n\n    _proto.stepForward = function stepForward() {\n      this.checkMuted();\n      this.player_.volume(this.player_.volume() + 0.1);\n    }\n    /**\n     * Decrease volume level for keyboard users\n     */\n    ;\n\n    _proto.stepBack = function stepBack() {\n      this.checkMuted();\n      this.player_.volume(this.player_.volume() - 0.1);\n    }\n    /**\n     * Update ARIA accessibility attributes\n     *\n     * @param {EventTarget~Event} [event]\n     *        The `volumechange` event that caused this function to run.\n     *\n     * @listens Player#volumechange\n     */\n    ;\n\n    _proto.updateARIAAttributes = function updateARIAAttributes(event) {\n      var ariaValue = this.player_.muted() ? 0 : this.volumeAsPercentage_();\n      this.el_.setAttribute('aria-valuenow', ariaValue);\n      this.el_.setAttribute('aria-valuetext', ariaValue + '%');\n    }\n    /**\n     * Returns the current value of the player volume as a percentage\n     *\n     * @private\n     */\n    ;\n\n    _proto.volumeAsPercentage_ = function volumeAsPercentage_() {\n      return Math.round(this.player_.volume() * 100);\n    }\n    /**\n     * When user starts dragging the VolumeBar, store the volume and listen for\n     * the end of the drag. When the drag ends, if the volume was set to zero,\n     * set lastVolume to the stored volume.\n     *\n     * @listens slideractive\n     * @private\n     */\n    ;\n\n    _proto.updateLastVolume_ = function updateLastVolume_() {\n      var _this2 = this;\n\n      var volumeBeforeDrag = this.player_.volume();\n      this.one('sliderinactive', function () {\n        if (_this2.player_.volume() === 0) {\n          _this2.player_.lastVolume_(volumeBeforeDrag);\n        }\n      });\n    };\n\n    return VolumeBar;\n  }(Slider);\n  /**\n   * Default options for the `VolumeBar`\n   *\n   * @type {Object}\n   * @private\n   */\n\n\n  VolumeBar.prototype.options_ = {\n    children: ['volumeLevel'],\n    barName: 'volumeLevel'\n  };\n  /**\n   * Call the update event for this Slider when this event happens on the player.\n   *\n   * @type {string}\n   */\n\n  VolumeBar.prototype.playerEvent = 'volumechange';\n  Component.registerComponent('VolumeBar', VolumeBar);\n\n  /**\n   * The component for controlling the volume level\n   *\n   * @extends Component\n   */\n\n  var VolumeControl =\n  /*#__PURE__*/\n  function (_Component) {\n    _inheritsLoose(VolumeControl, _Component);\n\n    /**\n     * Creates an instance of this class.\n     *\n     * @param {Player} player\n     *        The `Player` that this class should be attached to.\n     *\n     * @param {Object} [options={}]\n     *        The key/value store of player options.\n     */\n    function VolumeControl(player, options) {\n      var _this;\n\n      if (options === void 0) {\n        options = {};\n      }\n\n      options.vertical = options.vertical || false; // Pass the vertical option down to the VolumeBar if\n      // the VolumeBar is turned on.\n\n      if (typeof options.volumeBar === 'undefined' || isPlain(options.volumeBar)) {\n        options.volumeBar = options.volumeBar || {};\n        options.volumeBar.vertical = options.vertical;\n      }\n\n      _this = _Component.call(this, player, options) || this; // hide this control if volume support is missing\n\n      checkVolumeSupport(_assertThisInitialized(_assertThisInitialized(_this)), player);\n      _this.throttledHandleMouseMove = throttle(bind(_assertThisInitialized(_assertThisInitialized(_this)), _this.handleMouseMove), 25);\n\n      _this.on('mousedown', _this.handleMouseDown);\n\n      _this.on('touchstart', _this.handleMouseDown); // while the slider is active (the mouse has been pressed down and\n      // is dragging) or in focus we do not want to hide the VolumeBar\n\n\n      _this.on(_this.volumeBar, ['focus', 'slideractive'], function () {\n        _this.volumeBar.addClass('vjs-slider-active');\n\n        _this.addClass('vjs-slider-active');\n\n        _this.trigger('slideractive');\n      });\n\n      _this.on(_this.volumeBar, ['blur', 'sliderinactive'], function () {\n        _this.volumeBar.removeClass('vjs-slider-active');\n\n        _this.removeClass('vjs-slider-active');\n\n        _this.trigger('sliderinactive');\n      });\n\n      return _this;\n    }\n    /**\n     * Create the `Component`'s DOM element\n     *\n     * @return {Element}\n     *         The element that was created.\n     */\n\n\n    var _proto = VolumeControl.prototype;\n\n    _proto.createEl = function createEl() {\n      var orientationClass = 'vjs-volume-horizontal';\n\n      if (this.options_.vertical) {\n        orientationClass = 'vjs-volume-vertical';\n      }\n\n      return _Component.prototype.createEl.call(this, 'div', {\n        className: \"vjs-volume-control vjs-control \" + orientationClass\n      });\n    }\n    /**\n     * Handle `mousedown` or `touchstart` events on the `VolumeControl`.\n     *\n     * @param {EventTarget~Event} event\n     *        `mousedown` or `touchstart` event that triggered this function\n     *\n     * @listens mousedown\n     * @listens touchstart\n     */\n    ;\n\n    _proto.handleMouseDown = function handleMouseDown(event) {\n      var doc = this.el_.ownerDocument;\n      this.on(doc, 'mousemove', this.throttledHandleMouseMove);\n      this.on(doc, 'touchmove', this.throttledHandleMouseMove);\n      this.on(doc, 'mouseup', this.handleMouseUp);\n      this.on(doc, 'touchend', this.handleMouseUp);\n    }\n    /**\n     * Handle `mouseup` or `touchend` events on the `VolumeControl`.\n     *\n     * @param {EventTarget~Event} event\n     *        `mouseup` or `touchend` event that triggered this function.\n     *\n     * @listens touchend\n     * @listens mouseup\n     */\n    ;\n\n    _proto.handleMouseUp = function handleMouseUp(event) {\n      var doc = this.el_.ownerDocument;\n      this.off(doc, 'mousemove', this.throttledHandleMouseMove);\n      this.off(doc, 'touchmove', this.throttledHandleMouseMove);\n      this.off(doc, 'mouseup', this.handleMouseUp);\n      this.off(doc, 'touchend', this.handleMouseUp);\n    }\n    /**\n     * Handle `mousedown` or `touchstart` events on the `VolumeControl`.\n     *\n     * @param {EventTarget~Event} event\n     *        `mousedown` or `touchstart` event that triggered this function\n     *\n     * @listens mousedown\n     * @listens touchstart\n     */\n    ;\n\n    _proto.handleMouseMove = function handleMouseMove(event) {\n      this.volumeBar.handleMouseMove(event);\n    };\n\n    return VolumeControl;\n  }(Component);\n  /**\n   * Default options for the `VolumeControl`\n   *\n   * @type {Object}\n   * @private\n   */\n\n\n  VolumeControl.prototype.options_ = {\n    children: ['volumeBar']\n  };\n  Component.registerComponent('VolumeControl', VolumeControl);\n\n  /**\n   * Check if muting volume is supported and if it isn't hide the mute toggle\n   * button.\n   *\n   * @param {Component} self\n   *        A reference to the mute toggle button\n   *\n   * @param {Player} player\n   *        A reference to the player\n   *\n   * @private\n   */\n  var checkMuteSupport = function checkMuteSupport(self, player) {\n    // hide mute toggle button if it's not supported by the current tech\n    if (player.tech_ && !player.tech_.featuresMuteControl) {\n      self.addClass('vjs-hidden');\n    }\n\n    self.on(player, 'loadstart', function () {\n      if (!player.tech_.featuresMuteControl) {\n        self.addClass('vjs-hidden');\n      } else {\n        self.removeClass('vjs-hidden');\n      }\n    });\n  };\n\n  /**\n   * A button component for muting the audio.\n   *\n   * @extends Button\n   */\n\n  var MuteToggle =\n  /*#__PURE__*/\n  function (_Button) {\n    _inheritsLoose(MuteToggle, _Button);\n\n    /**\n     * Creates an instance of this class.\n     *\n     * @param {Player} player\n     *        The `Player` that this class should be attached to.\n     *\n     * @param {Object} [options]\n     *        The key/value store of player options.\n     */\n    function MuteToggle(player, options) {\n      var _this;\n\n      _this = _Button.call(this, player, options) || this; // hide this control if volume support is missing\n\n      checkMuteSupport(_assertThisInitialized(_assertThisInitialized(_this)), player);\n\n      _this.on(player, ['loadstart', 'volumechange'], _this.update);\n\n      return _this;\n    }\n    /**\n     * Builds the default DOM `className`.\n     *\n     * @return {string}\n     *         The DOM `className` for this object.\n     */\n\n\n    var _proto = MuteToggle.prototype;\n\n    _proto.buildCSSClass = function buildCSSClass() {\n      return \"vjs-mute-control \" + _Button.prototype.buildCSSClass.call(this);\n    }\n    /**\n     * This gets called when an `MuteToggle` is \"clicked\". See\n     * {@link ClickableComponent} for more detailed information on what a click can be.\n     *\n     * @param {EventTarget~Event} [event]\n     *        The `keydown`, `tap`, or `click` event that caused this function to be\n     *        called.\n     *\n     * @listens tap\n     * @listens click\n     */\n    ;\n\n    _proto.handleClick = function handleClick(event) {\n      var vol = this.player_.volume();\n      var lastVolume = this.player_.lastVolume_();\n\n      if (vol === 0) {\n        var volumeToSet = lastVolume < 0.1 ? 0.1 : lastVolume;\n        this.player_.volume(volumeToSet);\n        this.player_.muted(false);\n      } else {\n        this.player_.muted(this.player_.muted() ? false : true);\n      }\n    }\n    /**\n     * Update the `MuteToggle` button based on the state of `volume` and `muted`\n     * on the player.\n     *\n     * @param {EventTarget~Event} [event]\n     *        The {@link Player#loadstart} event if this function was called\n     *        through an event.\n     *\n     * @listens Player#loadstart\n     * @listens Player#volumechange\n     */\n    ;\n\n    _proto.update = function update(event) {\n      this.updateIcon_();\n      this.updateControlText_();\n    }\n    /**\n     * Update the appearance of the `MuteToggle` icon.\n     *\n     * Possible states (given `level` variable below):\n     * - 0: crossed out\n     * - 1: zero bars of volume\n     * - 2: one bar of volume\n     * - 3: two bars of volume\n     *\n     * @private\n     */\n    ;\n\n    _proto.updateIcon_ = function updateIcon_() {\n      var vol = this.player_.volume();\n      var level = 3; // in iOS when a player is loaded with muted attribute\n      // and volume is changed with a native mute button\n      // we want to make sure muted state is updated\n\n      if (IS_IOS) {\n        this.player_.muted(this.player_.tech_.el_.muted);\n      }\n\n      if (vol === 0 || this.player_.muted()) {\n        level = 0;\n      } else if (vol < 0.33) {\n        level = 1;\n      } else if (vol < 0.67) {\n        level = 2;\n      } // TODO improve muted icon classes\n\n\n      for (var i = 0; i < 4; i++) {\n        removeClass(this.el_, \"vjs-vol-\" + i);\n      }\n\n      addClass(this.el_, \"vjs-vol-\" + level);\n    }\n    /**\n     * If `muted` has changed on the player, update the control text\n     * (`title` attribute on `vjs-mute-control` element and content of\n     * `vjs-control-text` element).\n     *\n     * @private\n     */\n    ;\n\n    _proto.updateControlText_ = function updateControlText_() {\n      var soundOff = this.player_.muted() || this.player_.volume() === 0;\n      var text = soundOff ? 'Unmute' : 'Mute';\n\n      if (this.controlText() !== text) {\n        this.controlText(text);\n      }\n    };\n\n    return MuteToggle;\n  }(Button);\n  /**\n   * The text that should display over the `MuteToggle`s controls. Added for localization.\n   *\n   * @type {string}\n   * @private\n   */\n\n\n  MuteToggle.prototype.controlText_ = 'Mute';\n  Component.registerComponent('MuteToggle', MuteToggle);\n\n  /**\n   * A Component to contain the MuteToggle and VolumeControl so that\n   * they can work together.\n   *\n   * @extends Component\n   */\n\n  var VolumePanel =\n  /*#__PURE__*/\n  function (_Component) {\n    _inheritsLoose(VolumePanel, _Component);\n\n    /**\n     * Creates an instance of this class.\n     *\n     * @param {Player} player\n     *        The `Player` that this class should be attached to.\n     *\n     * @param {Object} [options={}]\n     *        The key/value store of player options.\n     */\n    function VolumePanel(player, options) {\n      var _this;\n\n      if (options === void 0) {\n        options = {};\n      }\n\n      if (typeof options.inline !== 'undefined') {\n        options.inline = options.inline;\n      } else {\n        options.inline = true;\n      } // pass the inline option down to the VolumeControl as vertical if\n      // the VolumeControl is on.\n\n\n      if (typeof options.volumeControl === 'undefined' || isPlain(options.volumeControl)) {\n        options.volumeControl = options.volumeControl || {};\n        options.volumeControl.vertical = !options.inline;\n      }\n\n      _this = _Component.call(this, player, options) || this;\n\n      _this.on(player, ['loadstart'], _this.volumePanelState_); // while the slider is active (the mouse has been pressed down and\n      // is dragging) we do not want to hide the VolumeBar\n\n\n      _this.on(_this.volumeControl, ['slideractive'], _this.sliderActive_);\n\n      _this.on(_this.volumeControl, ['sliderinactive'], _this.sliderInactive_);\n\n      return _this;\n    }\n    /**\n     * Add vjs-slider-active class to the VolumePanel\n     *\n     * @listens VolumeControl#slideractive\n     * @private\n     */\n\n\n    var _proto = VolumePanel.prototype;\n\n    _proto.sliderActive_ = function sliderActive_() {\n      this.addClass('vjs-slider-active');\n    }\n    /**\n     * Removes vjs-slider-active class to the VolumePanel\n     *\n     * @listens VolumeControl#sliderinactive\n     * @private\n     */\n    ;\n\n    _proto.sliderInactive_ = function sliderInactive_() {\n      this.removeClass('vjs-slider-active');\n    }\n    /**\n     * Adds vjs-hidden or vjs-mute-toggle-only to the VolumePanel\n     * depending on MuteToggle and VolumeControl state\n     *\n     * @listens Player#loadstart\n     * @private\n     */\n    ;\n\n    _proto.volumePanelState_ = function volumePanelState_() {\n      // hide volume panel if neither volume control or mute toggle\n      // are displayed\n      if (this.volumeControl.hasClass('vjs-hidden') && this.muteToggle.hasClass('vjs-hidden')) {\n        this.addClass('vjs-hidden');\n      } // if only mute toggle is visible we don't want\n      // volume panel expanding when hovered or active\n\n\n      if (this.volumeControl.hasClass('vjs-hidden') && !this.muteToggle.hasClass('vjs-hidden')) {\n        this.addClass('vjs-mute-toggle-only');\n      }\n    }\n    /**\n     * Create the `Component`'s DOM element\n     *\n     * @return {Element}\n     *         The element that was created.\n     */\n    ;\n\n    _proto.createEl = function createEl() {\n      var orientationClass = 'vjs-volume-panel-horizontal';\n\n      if (!this.options_.inline) {\n        orientationClass = 'vjs-volume-panel-vertical';\n      }\n\n      return _Component.prototype.createEl.call(this, 'div', {\n        className: \"vjs-volume-panel vjs-control \" + orientationClass\n      });\n    };\n\n    return VolumePanel;\n  }(Component);\n  /**\n   * Default options for the `VolumeControl`\n   *\n   * @type {Object}\n   * @private\n   */\n\n\n  VolumePanel.prototype.options_ = {\n    children: ['muteToggle', 'volumeControl']\n  };\n  Component.registerComponent('VolumePanel', VolumePanel);\n\n  /**\n   * The Menu component is used to build popup menus, including subtitle and\n   * captions selection menus.\n   *\n   * @extends Component\n   */\n\n  var Menu =\n  /*#__PURE__*/\n  function (_Component) {\n    _inheritsLoose(Menu, _Component);\n\n    /**\n     * Create an instance of this class.\n     *\n     * @param {Player} player\n     *        the player that this component should attach to\n     *\n     * @param {Object} [options]\n     *        Object of option names and values\n     *\n     */\n    function Menu(player, options) {\n      var _this;\n\n      _this = _Component.call(this, player, options) || this;\n\n      if (options) {\n        _this.menuButton_ = options.menuButton;\n      }\n\n      _this.focusedChild_ = -1;\n\n      _this.on('keydown', _this.handleKeyPress); // All the menu item instances share the same blur handler provided by the menu container.\n\n\n      _this.boundHandleBlur_ = bind(_assertThisInitialized(_assertThisInitialized(_this)), _this.handleBlur);\n      _this.boundHandleTapClick_ = bind(_assertThisInitialized(_assertThisInitialized(_this)), _this.handleTapClick);\n      return _this;\n    }\n    /**\n     * Add event listeners to the {@link MenuItem}.\n     *\n     * @param {Object} component\n     *        The instance of the `MenuItem` to add listeners to.\n     *\n     */\n\n\n    var _proto = Menu.prototype;\n\n    _proto.addEventListenerForItem = function addEventListenerForItem(component) {\n      if (!(component instanceof Component)) {\n        return;\n      }\n\n      component.on('blur', this.boundHandleBlur_);\n      component.on(['tap', 'click'], this.boundHandleTapClick_);\n    }\n    /**\n     * Remove event listeners from the {@link MenuItem}.\n     *\n     * @param {Object} component\n     *        The instance of the `MenuItem` to remove listeners.\n     *\n     */\n    ;\n\n    _proto.removeEventListenerForItem = function removeEventListenerForItem(component) {\n      if (!(component instanceof Component)) {\n        return;\n      }\n\n      component.off('blur', this.boundHandleBlur_);\n      component.off(['tap', 'click'], this.boundHandleTapClick_);\n    }\n    /**\n     * This method will be called indirectly when the component has been added\n     * before the component adds to the new menu instance by `addItem`.\n     * In this case, the original menu instance will remove the component\n     * by calling `removeChild`.\n     *\n     * @param {Object} component\n     *        The instance of the `MenuItem`\n     */\n    ;\n\n    _proto.removeChild = function removeChild(component) {\n      if (typeof component === 'string') {\n        component = this.getChild(component);\n      }\n\n      this.removeEventListenerForItem(component);\n\n      _Component.prototype.removeChild.call(this, component);\n    }\n    /**\n     * Add a {@link MenuItem} to the menu.\n     *\n     * @param {Object|string} component\n     *        The name or instance of the `MenuItem` to add.\n     *\n     */\n    ;\n\n    _proto.addItem = function addItem(component) {\n      var childComponent = this.addChild(component);\n\n      if (childComponent) {\n        this.addEventListenerForItem(childComponent);\n      }\n    }\n    /**\n     * Create the `Menu`s DOM element.\n     *\n     * @return {Element}\n     *         the element that was created\n     */\n    ;\n\n    _proto.createEl = function createEl$$1() {\n      var contentElType = this.options_.contentElType || 'ul';\n      this.contentEl_ = createEl(contentElType, {\n        className: 'vjs-menu-content'\n      });\n      this.contentEl_.setAttribute('role', 'menu');\n\n      var el = _Component.prototype.createEl.call(this, 'div', {\n        append: this.contentEl_,\n        className: 'vjs-menu'\n      });\n\n      el.appendChild(this.contentEl_); // Prevent clicks from bubbling up. Needed for Menu Buttons,\n      // where a click on the parent is significant\n\n      on(el, 'click', function (event) {\n        event.preventDefault();\n        event.stopImmediatePropagation();\n      });\n      return el;\n    };\n\n    _proto.dispose = function dispose() {\n      this.contentEl_ = null;\n      this.boundHandleBlur_ = null;\n      this.boundHandleTapClick_ = null;\n\n      _Component.prototype.dispose.call(this);\n    }\n    /**\n     * Called when a `MenuItem` loses focus.\n     *\n     * @param {EventTarget~Event} event\n     *        The `blur` event that caused this function to be called.\n     *\n     * @listens blur\n     */\n    ;\n\n    _proto.handleBlur = function handleBlur(event) {\n      var relatedTarget = event.relatedTarget || document.activeElement; // Close menu popup when a user clicks outside the menu\n\n      if (!this.children().some(function (element) {\n        return element.el() === relatedTarget;\n      })) {\n        var btn = this.menuButton_;\n\n        if (btn && btn.buttonPressed_ && relatedTarget !== btn.el().firstChild) {\n          btn.unpressButton();\n        }\n      }\n    }\n    /**\n     * Called when a `MenuItem` gets clicked or tapped.\n     *\n     * @param {EventTarget~Event} event\n     *        The `click` or `tap` event that caused this function to be called.\n     *\n     * @listens click,tap\n     */\n    ;\n\n    _proto.handleTapClick = function handleTapClick(event) {\n      // Unpress the associated MenuButton, and move focus back to it\n      if (this.menuButton_) {\n        this.menuButton_.unpressButton();\n        var childComponents = this.children();\n\n        if (!Array.isArray(childComponents)) {\n          return;\n        }\n\n        var foundComponent = childComponents.filter(function (component) {\n          return component.el() === event.target;\n        })[0];\n\n        if (!foundComponent) {\n          return;\n        } // don't focus menu button if item is a caption settings item\n        // because focus will move elsewhere\n\n\n        if (foundComponent.name() !== 'CaptionSettingsMenuItem') {\n          this.menuButton_.focus();\n        }\n      }\n    }\n    /**\n     * Handle a `keydown` event on this menu. This listener is added in the constructor.\n     *\n     * @param {EventTarget~Event} event\n     *        A `keydown` event that happened on the menu.\n     *\n     * @listens keydown\n     */\n    ;\n\n    _proto.handleKeyPress = function handleKeyPress(event) {\n      // Left and Down Arrows\n      if (keycode.isEventKey(event, 'Left') || keycode.isEventKey(event, 'Down')) {\n        event.preventDefault();\n        this.stepForward(); // Up and Right Arrows\n      } else if (keycode.isEventKey(event, 'Right') || keycode.isEventKey(event, 'Up')) {\n        event.preventDefault();\n        this.stepBack();\n      }\n    }\n    /**\n     * Move to next (lower) menu item for keyboard users.\n     */\n    ;\n\n    _proto.stepForward = function stepForward() {\n      var stepChild = 0;\n\n      if (this.focusedChild_ !== undefined) {\n        stepChild = this.focusedChild_ + 1;\n      }\n\n      this.focus(stepChild);\n    }\n    /**\n     * Move to previous (higher) menu item for keyboard users.\n     */\n    ;\n\n    _proto.stepBack = function stepBack() {\n      var stepChild = 0;\n\n      if (this.focusedChild_ !== undefined) {\n        stepChild = this.focusedChild_ - 1;\n      }\n\n      this.focus(stepChild);\n    }\n    /**\n     * Set focus on a {@link MenuItem} in the `Menu`.\n     *\n     * @param {Object|string} [item=0]\n     *        Index of child item set focus on.\n     */\n    ;\n\n    _proto.focus = function focus(item) {\n      if (item === void 0) {\n        item = 0;\n      }\n\n      var children = this.children().slice();\n      var haveTitle = children.length && children[0].className && /vjs-menu-title/.test(children[0].className);\n\n      if (haveTitle) {\n        children.shift();\n      }\n\n      if (children.length > 0) {\n        if (item < 0) {\n          item = 0;\n        } else if (item >= children.length) {\n          item = children.length - 1;\n        }\n\n        this.focusedChild_ = item;\n        children[item].el_.focus();\n      }\n    };\n\n    return Menu;\n  }(Component);\n\n  Component.registerComponent('Menu', Menu);\n\n  /**\n   * A `MenuButton` class for any popup {@link Menu}.\n   *\n   * @extends Component\n   */\n\n  var MenuButton =\n  /*#__PURE__*/\n  function (_Component) {\n    _inheritsLoose(MenuButton, _Component);\n\n    /**\n     * Creates an instance of this class.\n     *\n     * @param {Player} player\n     *        The `Player` that this class should be attached to.\n     *\n     * @param {Object} [options={}]\n     *        The key/value store of player options.\n     */\n    function MenuButton(player, options) {\n      var _this;\n\n      if (options === void 0) {\n        options = {};\n      }\n\n      _this = _Component.call(this, player, options) || this;\n      _this.menuButton_ = new Button(player, options);\n\n      _this.menuButton_.controlText(_this.controlText_);\n\n      _this.menuButton_.el_.setAttribute('aria-haspopup', 'true'); // Add buildCSSClass values to the button, not the wrapper\n\n\n      var buttonClass = Button.prototype.buildCSSClass();\n      _this.menuButton_.el_.className = _this.buildCSSClass() + ' ' + buttonClass;\n\n      _this.menuButton_.removeClass('vjs-control');\n\n      _this.addChild(_this.menuButton_);\n\n      _this.update();\n\n      _this.enabled_ = true;\n\n      _this.on(_this.menuButton_, 'tap', _this.handleClick);\n\n      _this.on(_this.menuButton_, 'click', _this.handleClick);\n\n      _this.on(_this.menuButton_, 'focus', _this.handleFocus);\n\n      _this.on(_this.menuButton_, 'blur', _this.handleBlur);\n\n      _this.on(_this.menuButton_, 'mouseenter', function () {\n        _this.menu.show();\n      });\n\n      _this.on('keydown', _this.handleSubmenuKeyPress);\n\n      return _this;\n    }\n    /**\n     * Update the menu based on the current state of its items.\n     */\n\n\n    var _proto = MenuButton.prototype;\n\n    _proto.update = function update() {\n      var menu = this.createMenu();\n\n      if (this.menu) {\n        this.menu.dispose();\n        this.removeChild(this.menu);\n      }\n\n      this.menu = menu;\n      this.addChild(menu);\n      /**\n       * Track the state of the menu button\n       *\n       * @type {Boolean}\n       * @private\n       */\n\n      this.buttonPressed_ = false;\n      this.menuButton_.el_.setAttribute('aria-expanded', 'false');\n\n      if (this.items && this.items.length <= this.hideThreshold_) {\n        this.hide();\n      } else {\n        this.show();\n      }\n    }\n    /**\n     * Create the menu and add all items to it.\n     *\n     * @return {Menu}\n     *         The constructed menu\n     */\n    ;\n\n    _proto.createMenu = function createMenu() {\n      var menu = new Menu(this.player_, {\n        menuButton: this\n      });\n      /**\n       * Hide the menu if the number of items is less than or equal to this threshold. This defaults\n       * to 0 and whenever we add items which can be hidden to the menu we'll increment it. We list\n       * it here because every time we run `createMenu` we need to reset the value.\n       *\n       * @protected\n       * @type {Number}\n       */\n\n      this.hideThreshold_ = 0; // Add a title list item to the top\n\n      if (this.options_.title) {\n        var titleEl = createEl('li', {\n          className: 'vjs-menu-title',\n          innerHTML: toTitleCase(this.options_.title),\n          tabIndex: -1\n        });\n        this.hideThreshold_ += 1;\n        var titleComponent = new Component(this.player_, {\n          el: titleEl\n        });\n        menu.addItem(titleComponent);\n      }\n\n      this.items = this.createItems();\n\n      if (this.items) {\n        // Add menu items to the menu\n        for (var i = 0; i < this.items.length; i++) {\n          menu.addItem(this.items[i]);\n        }\n      }\n\n      return menu;\n    }\n    /**\n     * Create the list of menu items. Specific to each subclass.\n     *\n     * @abstract\n     */\n    ;\n\n    _proto.createItems = function createItems() {}\n    /**\n     * Create the `MenuButtons`s DOM element.\n     *\n     * @return {Element}\n     *         The element that gets created.\n     */\n    ;\n\n    _proto.createEl = function createEl$$1() {\n      return _Component.prototype.createEl.call(this, 'div', {\n        className: this.buildWrapperCSSClass()\n      }, {});\n    }\n    /**\n     * Allow sub components to stack CSS class names for the wrapper element\n     *\n     * @return {string}\n     *         The constructed wrapper DOM `className`\n     */\n    ;\n\n    _proto.buildWrapperCSSClass = function buildWrapperCSSClass() {\n      var menuButtonClass = 'vjs-menu-button'; // If the inline option is passed, we want to use different styles altogether.\n\n      if (this.options_.inline === true) {\n        menuButtonClass += '-inline';\n      } else {\n        menuButtonClass += '-popup';\n      } // TODO: Fix the CSS so that this isn't necessary\n\n\n      var buttonClass = Button.prototype.buildCSSClass();\n      return \"vjs-menu-button \" + menuButtonClass + \" \" + buttonClass + \" \" + _Component.prototype.buildCSSClass.call(this);\n    }\n    /**\n     * Builds the default DOM `className`.\n     *\n     * @return {string}\n     *         The DOM `className` for this object.\n     */\n    ;\n\n    _proto.buildCSSClass = function buildCSSClass() {\n      var menuButtonClass = 'vjs-menu-button'; // If the inline option is passed, we want to use different styles altogether.\n\n      if (this.options_.inline === true) {\n        menuButtonClass += '-inline';\n      } else {\n        menuButtonClass += '-popup';\n      }\n\n      return \"vjs-menu-button \" + menuButtonClass + \" \" + _Component.prototype.buildCSSClass.call(this);\n    }\n    /**\n     * Get or set the localized control text that will be used for accessibility.\n     *\n     * > NOTE: This will come from the internal `menuButton_` element.\n     *\n     * @param {string} [text]\n     *        Control text for element.\n     *\n     * @param {Element} [el=this.menuButton_.el()]\n     *        Element to set the title on.\n     *\n     * @return {string}\n     *         - The control text when getting\n     */\n    ;\n\n    _proto.controlText = function controlText(text, el) {\n      if (el === void 0) {\n        el = this.menuButton_.el();\n      }\n\n      return this.menuButton_.controlText(text, el);\n    }\n    /**\n     * Handle a click on a `MenuButton`.\n     * See {@link ClickableComponent#handleClick} for instances where this is called.\n     *\n     * @param {EventTarget~Event} event\n     *        The `keydown`, `tap`, or `click` event that caused this function to be\n     *        called.\n     *\n     * @listens tap\n     * @listens click\n     */\n    ;\n\n    _proto.handleClick = function handleClick(event) {\n      if (this.buttonPressed_) {\n        this.unpressButton();\n      } else {\n        this.pressButton();\n      }\n    }\n    /**\n     * Set the focus to the actual button, not to this element\n     */\n    ;\n\n    _proto.focus = function focus() {\n      this.menuButton_.focus();\n    }\n    /**\n     * Remove the focus from the actual button, not this element\n     */\n    ;\n\n    _proto.blur = function blur() {\n      this.menuButton_.blur();\n    }\n    /**\n     * This gets called when a `MenuButton` gains focus via a `focus` event.\n     * Turns on listening for `keydown` events. When they happen it\n     * calls `this.handleKeyPress`.\n     *\n     * @param {EventTarget~Event} event\n     *        The `focus` event that caused this function to be called.\n     *\n     * @listens focus\n     */\n    ;\n\n    _proto.handleFocus = function handleFocus() {\n      on(document, 'keydown', bind(this, this.handleKeyPress));\n    }\n    /**\n     * Called when a `MenuButton` loses focus. Turns off the listener for\n     * `keydown` events. Which Stops `this.handleKeyPress` from getting called.\n     *\n     * @param {EventTarget~Event} event\n     *        The `blur` event that caused this function to be called.\n     *\n     * @listens blur\n     */\n    ;\n\n    _proto.handleBlur = function handleBlur() {\n      off(document, 'keydown', bind(this, this.handleKeyPress));\n    }\n    /**\n     * Handle tab, escape, down arrow, and up arrow keys for `MenuButton`. See\n     * {@link ClickableComponent#handleKeyPress} for instances where this is called.\n     *\n     * @param {EventTarget~Event} event\n     *        The `keydown` event that caused this function to be called.\n     *\n     * @listens keydown\n     */\n    ;\n\n    _proto.handleKeyPress = function handleKeyPress(event) {\n      // Escape or Tab unpress the 'button'\n      if (keycode.isEventKey(event, 'Esc') || keycode.isEventKey(event, 'Tab')) {\n        if (this.buttonPressed_) {\n          this.unpressButton();\n        } // Don't preventDefault for Tab key - we still want to lose focus\n\n\n        if (!keycode.isEventKey(event, 'Tab')) {\n          event.preventDefault(); // Set focus back to the menu button's button\n\n          this.menuButton_.focus();\n        } // Up Arrow or Down Arrow also 'press' the button to open the menu\n\n      } else if (keycode.isEventKey(event, 'Up') || keycode.isEventKey(event, 'Down')) {\n        if (!this.buttonPressed_) {\n          event.preventDefault();\n          this.pressButton();\n        }\n      }\n    }\n    /**\n     * Handle a `keydown` event on a sub-menu. The listener for this is added in\n     * the constructor.\n     *\n     * @param {EventTarget~Event} event\n     *        Key press event\n     *\n     * @listens keydown\n     */\n    ;\n\n    _proto.handleSubmenuKeyPress = function handleSubmenuKeyPress(event) {\n      // Escape or Tab unpress the 'button'\n      if (keycode.isEventKey(event, 'Esc') || keycode.isEventKey(event, 'Tab')) {\n        if (this.buttonPressed_) {\n          this.unpressButton();\n        } // Don't preventDefault for Tab key - we still want to lose focus\n\n\n        if (!keycode.isEventKey(event, 'Tab')) {\n          event.preventDefault(); // Set focus back to the menu button's button\n\n          this.menuButton_.focus();\n        }\n      }\n    }\n    /**\n     * Put the current `MenuButton` into a pressed state.\n     */\n    ;\n\n    _proto.pressButton = function pressButton() {\n      if (this.enabled_) {\n        this.buttonPressed_ = true;\n        this.menu.show();\n        this.menu.lockShowing();\n        this.menuButton_.el_.setAttribute('aria-expanded', 'true'); // set the focus into the submenu, except on iOS where it is resulting in\n        // undesired scrolling behavior when the player is in an iframe\n\n        if (IS_IOS && isInFrame()) {\n          // Return early so that the menu isn't focused\n          return;\n        }\n\n        this.menu.focus();\n      }\n    }\n    /**\n     * Take the current `MenuButton` out of a pressed state.\n     */\n    ;\n\n    _proto.unpressButton = function unpressButton() {\n      if (this.enabled_) {\n        this.buttonPressed_ = false;\n        this.menu.unlockShowing();\n        this.menu.hide();\n        this.menuButton_.el_.setAttribute('aria-expanded', 'false');\n      }\n    }\n    /**\n     * Disable the `MenuButton`. Don't allow it to be clicked.\n     */\n    ;\n\n    _proto.disable = function disable() {\n      this.unpressButton();\n      this.enabled_ = false;\n      this.addClass('vjs-disabled');\n      this.menuButton_.disable();\n    }\n    /**\n     * Enable the `MenuButton`. Allow it to be clicked.\n     */\n    ;\n\n    _proto.enable = function enable() {\n      this.enabled_ = true;\n      this.removeClass('vjs-disabled');\n      this.menuButton_.enable();\n    };\n\n    return MenuButton;\n  }(Component);\n\n  Component.registerComponent('MenuButton', MenuButton);\n\n  /**\n   * The base class for buttons that toggle specific  track types (e.g. subtitles).\n   *\n   * @extends MenuButton\n   */\n\n  var TrackButton =\n  /*#__PURE__*/\n  function (_MenuButton) {\n    _inheritsLoose(TrackButton, _MenuButton);\n\n    /**\n     * Creates an instance of this class.\n     *\n     * @param {Player} player\n     *        The `Player` that this class should be attached to.\n     *\n     * @param {Object} [options]\n     *        The key/value store of player options.\n     */\n    function TrackButton(player, options) {\n      var _this;\n\n      var tracks = options.tracks;\n      _this = _MenuButton.call(this, player, options) || this;\n\n      if (_this.items.length <= 1) {\n        _this.hide();\n      }\n\n      if (!tracks) {\n        return _assertThisInitialized(_this);\n      }\n\n      var updateHandler = bind(_assertThisInitialized(_assertThisInitialized(_this)), _this.update);\n      tracks.addEventListener('removetrack', updateHandler);\n      tracks.addEventListener('addtrack', updateHandler);\n\n      _this.player_.on('ready', updateHandler);\n\n      _this.player_.on('dispose', function () {\n        tracks.removeEventListener('removetrack', updateHandler);\n        tracks.removeEventListener('addtrack', updateHandler);\n      });\n\n      return _this;\n    }\n\n    return TrackButton;\n  }(MenuButton);\n\n  Component.registerComponent('TrackButton', TrackButton);\n\n  /**\n   * @file menu-keys.js\n   */\n\n  /**\n    * All keys used for operation of a menu (`MenuButton`, `Menu`, and `MenuItem`)\n    * Note that 'Enter' and 'Space' are not included here (otherwise they would\n    * prevent the `MenuButton` and `MenuItem` from being keyboard-clickable)\n    * @typedef MenuKeys\n    * @array\n    */\n  var MenuKeys = ['Tab', 'Esc', 'Up', 'Down', 'Right', 'Left'];\n\n  /**\n   * The component for a menu item. `<li>`\n   *\n   * @extends ClickableComponent\n   */\n\n  var MenuItem =\n  /*#__PURE__*/\n  function (_ClickableComponent) {\n    _inheritsLoose(MenuItem, _ClickableComponent);\n\n    /**\n     * Creates an instance of the this class.\n     *\n     * @param {Player} player\n     *        The `Player` that this class should be attached to.\n     *\n     * @param {Object} [options={}]\n     *        The key/value store of player options.\n     *\n     */\n    function MenuItem(player, options) {\n      var _this;\n\n      _this = _ClickableComponent.call(this, player, options) || this;\n      _this.selectable = options.selectable;\n      _this.isSelected_ = options.selected || false;\n      _this.multiSelectable = options.multiSelectable;\n\n      _this.selected(_this.isSelected_);\n\n      if (_this.selectable) {\n        if (_this.multiSelectable) {\n          _this.el_.setAttribute('role', 'menuitemcheckbox');\n        } else {\n          _this.el_.setAttribute('role', 'menuitemradio');\n        }\n      } else {\n        _this.el_.setAttribute('role', 'menuitem');\n      }\n\n      return _this;\n    }\n    /**\n     * Create the `MenuItem's DOM element\n     *\n     * @param {string} [type=li]\n     *        Element's node type, not actually used, always set to `li`.\n     *\n     * @param {Object} [props={}]\n     *        An object of properties that should be set on the element\n     *\n     * @param {Object} [attrs={}]\n     *        An object of attributes that should be set on the element\n     *\n     * @return {Element}\n     *         The element that gets created.\n     */\n\n\n    var _proto = MenuItem.prototype;\n\n    _proto.createEl = function createEl(type, props, attrs) {\n      // The control is textual, not just an icon\n      this.nonIconControl = true;\n      return _ClickableComponent.prototype.createEl.call(this, 'li', assign({\n        className: 'vjs-menu-item',\n        innerHTML: \"<span class=\\\"vjs-menu-item-text\\\">\" + this.localize(this.options_.label) + \"</span>\",\n        tabIndex: -1\n      }, props), attrs);\n    }\n    /**\n     * Ignore keys which are used by the menu, but pass any other ones up. See\n     * {@link ClickableComponent#handleKeyPress} for instances where this is called.\n     *\n     * @param {EventTarget~Event} event\n     *        The `keydown` event that caused this function to be called.\n     *\n     * @listens keydown\n     */\n    ;\n\n    _proto.handleKeyPress = function handleKeyPress(event) {\n      if (!MenuKeys.some(function (key) {\n        return keycode.isEventKey(event, key);\n      })) {\n        // Pass keypress handling up for unused keys\n        _ClickableComponent.prototype.handleKeyPress.call(this, event);\n      }\n    }\n    /**\n     * Any click on a `MenuItem` puts it into the selected state.\n     * See {@link ClickableComponent#handleClick} for instances where this is called.\n     *\n     * @param {EventTarget~Event} event\n     *        The `keydown`, `tap`, or `click` event that caused this function to be\n     *        called.\n     *\n     * @listens tap\n     * @listens click\n     */\n    ;\n\n    _proto.handleClick = function handleClick(event) {\n      this.selected(true);\n    }\n    /**\n     * Set the state for this menu item as selected or not.\n     *\n     * @param {boolean} selected\n     *        if the menu item is selected or not\n     */\n    ;\n\n    _proto.selected = function selected(_selected) {\n      if (this.selectable) {\n        if (_selected) {\n          this.addClass('vjs-selected');\n          this.el_.setAttribute('aria-checked', 'true'); // aria-checked isn't fully supported by browsers/screen readers,\n          // so indicate selected state to screen reader in the control text.\n\n          this.controlText(', selected');\n          this.isSelected_ = true;\n        } else {\n          this.removeClass('vjs-selected');\n          this.el_.setAttribute('aria-checked', 'false'); // Indicate un-selected state to screen reader\n\n          this.controlText('');\n          this.isSelected_ = false;\n        }\n      }\n    };\n\n    return MenuItem;\n  }(ClickableComponent);\n\n  Component.registerComponent('MenuItem', MenuItem);\n\n  /**\n   * The specific menu item type for selecting a language within a text track kind\n   *\n   * @extends MenuItem\n   */\n\n  var TextTrackMenuItem =\n  /*#__PURE__*/\n  function (_MenuItem) {\n    _inheritsLoose(TextTrackMenuItem, _MenuItem);\n\n    /**\n     * Creates an instance of this class.\n     *\n     * @param {Player} player\n     *        The `Player` that this class should be attached to.\n     *\n     * @param {Object} [options]\n     *        The key/value store of player options.\n     */\n    function TextTrackMenuItem(player, options) {\n      var _this;\n\n      var track = options.track;\n      var tracks = player.textTracks(); // Modify options for parent MenuItem class's init.\n\n      options.label = track.label || track.language || 'Unknown';\n      options.selected = track.mode === 'showing';\n      _this = _MenuItem.call(this, player, options) || this;\n      _this.track = track;\n\n      var changeHandler = function changeHandler() {\n        for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {\n          args[_key] = arguments[_key];\n        }\n\n        _this.handleTracksChange.apply(_assertThisInitialized(_assertThisInitialized(_this)), args);\n      };\n\n      var selectedLanguageChangeHandler = function selectedLanguageChangeHandler() {\n        for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {\n          args[_key2] = arguments[_key2];\n        }\n\n        _this.handleSelectedLanguageChange.apply(_assertThisInitialized(_assertThisInitialized(_this)), args);\n      };\n\n      player.on(['loadstart', 'texttrackchange'], changeHandler);\n      tracks.addEventListener('change', changeHandler);\n      tracks.addEventListener('selectedlanguagechange', selectedLanguageChangeHandler);\n\n      _this.on('dispose', function () {\n        player.off(['loadstart', 'texttrackchange'], changeHandler);\n        tracks.removeEventListener('change', changeHandler);\n        tracks.removeEventListener('selectedlanguagechange', selectedLanguageChangeHandler);\n      }); // iOS7 doesn't dispatch change events to TextTrackLists when an\n      // associated track's mode changes. Without something like\n      // Object.observe() (also not present on iOS7), it's not\n      // possible to detect changes to the mode attribute and polyfill\n      // the change event. As a poor substitute, we manually dispatch\n      // change events whenever the controls modify the mode.\n\n\n      if (tracks.onchange === undefined) {\n        var event;\n\n        _this.on(['tap', 'click'], function () {\n          if (typeof window$1.Event !== 'object') {\n            // Android 2.3 throws an Illegal Constructor error for window.Event\n            try {\n              event = new window$1.Event('change');\n            } catch (err) {// continue regardless of error\n            }\n          }\n\n          if (!event) {\n            event = document.createEvent('Event');\n            event.initEvent('change', true, true);\n          }\n\n          tracks.dispatchEvent(event);\n        });\n      } // set the default state based on current tracks\n\n\n      _this.handleTracksChange();\n\n      return _this;\n    }\n    /**\n     * This gets called when an `TextTrackMenuItem` is \"clicked\". See\n     * {@link ClickableComponent} for more detailed information on what a click can be.\n     *\n     * @param {EventTarget~Event} event\n     *        The `keydown`, `tap`, or `click` event that caused this function to be\n     *        called.\n     *\n     * @listens tap\n     * @listens click\n     */\n\n\n    var _proto = TextTrackMenuItem.prototype;\n\n    _proto.handleClick = function handleClick(event) {\n      var referenceTrack = this.track;\n      var tracks = this.player_.textTracks();\n\n      _MenuItem.prototype.handleClick.call(this, event);\n\n      if (!tracks) {\n        return;\n      } // Determine the relevant kind(s) of tracks for this component and filter\n      // out empty kinds.\n\n\n      var kinds = (referenceTrack.kinds || [referenceTrack.kind]).filter(Boolean);\n\n      for (var i = 0; i < tracks.length; i++) {\n        var track = tracks[i]; // If the track from the text tracks list is not of the right kind,\n        // skip it. We do not want to affect tracks of incompatible kind(s).\n\n        if (kinds.indexOf(track.kind) === -1) {\n          continue;\n        } // If this text track is the component's track and it is not showing,\n        // set it to showing.\n\n\n        if (track === referenceTrack) {\n          if (track.mode !== 'showing') {\n            track.mode = 'showing';\n          } // If this text track is not the component's track and it is not\n          // disabled, set it to disabled.\n\n        } else if (track.mode !== 'disabled') {\n          track.mode = 'disabled';\n        }\n      }\n    }\n    /**\n     * Handle text track list change\n     *\n     * @param {EventTarget~Event} event\n     *        The `change` event that caused this function to be called.\n     *\n     * @listens TextTrackList#change\n     */\n    ;\n\n    _proto.handleTracksChange = function handleTracksChange(event) {\n      var shouldBeSelected = this.track.mode === 'showing'; // Prevent redundant selected() calls because they may cause\n      // screen readers to read the appended control text unnecessarily\n\n      if (shouldBeSelected !== this.isSelected_) {\n        this.selected(shouldBeSelected);\n      }\n    };\n\n    _proto.handleSelectedLanguageChange = function handleSelectedLanguageChange(event) {\n      if (this.track.mode === 'showing') {\n        var selectedLanguage = this.player_.cache_.selectedLanguage; // Don't replace the kind of track across the same language\n\n        if (selectedLanguage && selectedLanguage.enabled && selectedLanguage.language === this.track.language && selectedLanguage.kind !== this.track.kind) {\n          return;\n        }\n\n        this.player_.cache_.selectedLanguage = {\n          enabled: true,\n          language: this.track.language,\n          kind: this.track.kind\n        };\n      }\n    };\n\n    _proto.dispose = function dispose() {\n      // remove reference to track object on dispose\n      this.track = null;\n\n      _MenuItem.prototype.dispose.call(this);\n    };\n\n    return TextTrackMenuItem;\n  }(MenuItem);\n\n  Component.registerComponent('TextTrackMenuItem', TextTrackMenuItem);\n\n  /**\n   * A special menu item for turning of a specific type of text track\n   *\n   * @extends TextTrackMenuItem\n   */\n\n  var OffTextTrackMenuItem =\n  /*#__PURE__*/\n  function (_TextTrackMenuItem) {\n    _inheritsLoose(OffTextTrackMenuItem, _TextTrackMenuItem);\n\n    /**\n     * Creates an instance of this class.\n     *\n     * @param {Player} player\n     *        The `Player` that this class should be attached to.\n     *\n     * @param {Object} [options]\n     *        The key/value store of player options.\n     */\n    function OffTextTrackMenuItem(player, options) {\n      // Create pseudo track info\n      // Requires options['kind']\n      options.track = {\n        player: player,\n        kind: options.kind,\n        kinds: options.kinds,\n        default: false,\n        mode: 'disabled'\n      };\n\n      if (!options.kinds) {\n        options.kinds = [options.kind];\n      }\n\n      if (options.label) {\n        options.track.label = options.label;\n      } else {\n        options.track.label = options.kinds.join(' and ') + ' off';\n      } // MenuItem is selectable\n\n\n      options.selectable = true; // MenuItem is NOT multiSelectable (i.e. only one can be marked \"selected\" at a time)\n\n      options.multiSelectable = false;\n      return _TextTrackMenuItem.call(this, player, options) || this;\n    }\n    /**\n     * Handle text track change\n     *\n     * @param {EventTarget~Event} event\n     *        The event that caused this function to run\n     */\n\n\n    var _proto = OffTextTrackMenuItem.prototype;\n\n    _proto.handleTracksChange = function handleTracksChange(event) {\n      var tracks = this.player().textTracks();\n      var shouldBeSelected = true;\n\n      for (var i = 0, l = tracks.length; i < l; i++) {\n        var track = tracks[i];\n\n        if (this.options_.kinds.indexOf(track.kind) > -1 && track.mode === 'showing') {\n          shouldBeSelected = false;\n          break;\n        }\n      } // Prevent redundant selected() calls because they may cause\n      // screen readers to read the appended control text unnecessarily\n\n\n      if (shouldBeSelected !== this.isSelected_) {\n        this.selected(shouldBeSelected);\n      }\n    };\n\n    _proto.handleSelectedLanguageChange = function handleSelectedLanguageChange(event) {\n      var tracks = this.player().textTracks();\n      var allHidden = true;\n\n      for (var i = 0, l = tracks.length; i < l; i++) {\n        var track = tracks[i];\n\n        if (['captions', 'descriptions', 'subtitles'].indexOf(track.kind) > -1 && track.mode === 'showing') {\n          allHidden = false;\n          break;\n        }\n      }\n\n      if (allHidden) {\n        this.player_.cache_.selectedLanguage = {\n          enabled: false\n        };\n      }\n    };\n\n    return OffTextTrackMenuItem;\n  }(TextTrackMenuItem);\n\n  Component.registerComponent('OffTextTrackMenuItem', OffTextTrackMenuItem);\n\n  /**\n   * The base class for buttons that toggle specific text track types (e.g. subtitles)\n   *\n   * @extends MenuButton\n   */\n\n  var TextTrackButton =\n  /*#__PURE__*/\n  function (_TrackButton) {\n    _inheritsLoose(TextTrackButton, _TrackButton);\n\n    /**\n     * Creates an instance of this class.\n     *\n     * @param {Player} player\n     *        The `Player` that this class should be attached to.\n     *\n     * @param {Object} [options={}]\n     *        The key/value store of player options.\n     */\n    function TextTrackButton(player, options) {\n      if (options === void 0) {\n        options = {};\n      }\n\n      options.tracks = player.textTracks();\n      return _TrackButton.call(this, player, options) || this;\n    }\n    /**\n     * Create a menu item for each text track\n     *\n     * @param {TextTrackMenuItem[]} [items=[]]\n     *        Existing array of items to use during creation\n     *\n     * @return {TextTrackMenuItem[]}\n     *         Array of menu items that were created\n     */\n\n\n    var _proto = TextTrackButton.prototype;\n\n    _proto.createItems = function createItems(items, TrackMenuItem) {\n      if (items === void 0) {\n        items = [];\n      }\n\n      if (TrackMenuItem === void 0) {\n        TrackMenuItem = TextTrackMenuItem;\n      }\n\n      // Label is an override for the [track] off label\n      // USed to localise captions/subtitles\n      var label;\n\n      if (this.label_) {\n        label = this.label_ + \" off\";\n      } // Add an OFF menu item to turn all tracks off\n\n\n      items.push(new OffTextTrackMenuItem(this.player_, {\n        kinds: this.kinds_,\n        kind: this.kind_,\n        label: label\n      }));\n      this.hideThreshold_ += 1;\n      var tracks = this.player_.textTracks();\n\n      if (!Array.isArray(this.kinds_)) {\n        this.kinds_ = [this.kind_];\n      }\n\n      for (var i = 0; i < tracks.length; i++) {\n        var track = tracks[i]; // only add tracks that are of an appropriate kind and have a label\n\n        if (this.kinds_.indexOf(track.kind) > -1) {\n          var item = new TrackMenuItem(this.player_, {\n            track: track,\n            // MenuItem is selectable\n            selectable: true,\n            // MenuItem is NOT multiSelectable (i.e. only one can be marked \"selected\" at a time)\n            multiSelectable: false\n          });\n          item.addClass(\"vjs-\" + track.kind + \"-menu-item\");\n          items.push(item);\n        }\n      }\n\n      return items;\n    };\n\n    return TextTrackButton;\n  }(TrackButton);\n\n  Component.registerComponent('TextTrackButton', TextTrackButton);\n\n  /**\n   * The chapter track menu item\n   *\n   * @extends MenuItem\n   */\n\n  var ChaptersTrackMenuItem =\n  /*#__PURE__*/\n  function (_MenuItem) {\n    _inheritsLoose(ChaptersTrackMenuItem, _MenuItem);\n\n    /**\n     * Creates an instance of this class.\n     *\n     * @param {Player} player\n     *        The `Player` that this class should be attached to.\n     *\n     * @param {Object} [options]\n     *        The key/value store of player options.\n     */\n    function ChaptersTrackMenuItem(player, options) {\n      var _this;\n\n      var track = options.track;\n      var cue = options.cue;\n      var currentTime = player.currentTime(); // Modify options for parent MenuItem class's init.\n\n      options.selectable = true;\n      options.multiSelectable = false;\n      options.label = cue.text;\n      options.selected = cue.startTime <= currentTime && currentTime < cue.endTime;\n      _this = _MenuItem.call(this, player, options) || this;\n      _this.track = track;\n      _this.cue = cue;\n      track.addEventListener('cuechange', bind(_assertThisInitialized(_assertThisInitialized(_this)), _this.update));\n      return _this;\n    }\n    /**\n     * This gets called when an `ChaptersTrackMenuItem` is \"clicked\". See\n     * {@link ClickableComponent} for more detailed information on what a click can be.\n     *\n     * @param {EventTarget~Event} [event]\n     *        The `keydown`, `tap`, or `click` event that caused this function to be\n     *        called.\n     *\n     * @listens tap\n     * @listens click\n     */\n\n\n    var _proto = ChaptersTrackMenuItem.prototype;\n\n    _proto.handleClick = function handleClick(event) {\n      _MenuItem.prototype.handleClick.call(this);\n\n      this.player_.currentTime(this.cue.startTime);\n      this.update(this.cue.startTime);\n    }\n    /**\n     * Update chapter menu item\n     *\n     * @param {EventTarget~Event} [event]\n     *        The `cuechange` event that caused this function to run.\n     *\n     * @listens TextTrack#cuechange\n     */\n    ;\n\n    _proto.update = function update(event) {\n      var cue = this.cue;\n      var currentTime = this.player_.currentTime(); // vjs.log(currentTime, cue.startTime);\n\n      this.selected(cue.startTime <= currentTime && currentTime < cue.endTime);\n    };\n\n    return ChaptersTrackMenuItem;\n  }(MenuItem);\n\n  Component.registerComponent('ChaptersTrackMenuItem', ChaptersTrackMenuItem);\n\n  /**\n   * The button component for toggling and selecting chapters\n   * Chapters act much differently than other text tracks\n   * Cues are navigation vs. other tracks of alternative languages\n   *\n   * @extends TextTrackButton\n   */\n\n  var ChaptersButton =\n  /*#__PURE__*/\n  function (_TextTrackButton) {\n    _inheritsLoose(ChaptersButton, _TextTrackButton);\n\n    /**\n     * Creates an instance of this class.\n     *\n     * @param {Player} player\n     *        The `Player` that this class should be attached to.\n     *\n     * @param {Object} [options]\n     *        The key/value store of player options.\n     *\n     * @param {Component~ReadyCallback} [ready]\n     *        The function to call when this function is ready.\n     */\n    function ChaptersButton(player, options, ready) {\n      return _TextTrackButton.call(this, player, options, ready) || this;\n    }\n    /**\n     * Builds the default DOM `className`.\n     *\n     * @return {string}\n     *         The DOM `className` for this object.\n     */\n\n\n    var _proto = ChaptersButton.prototype;\n\n    _proto.buildCSSClass = function buildCSSClass() {\n      return \"vjs-chapters-button \" + _TextTrackButton.prototype.buildCSSClass.call(this);\n    };\n\n    _proto.buildWrapperCSSClass = function buildWrapperCSSClass() {\n      return \"vjs-chapters-button \" + _TextTrackButton.prototype.buildWrapperCSSClass.call(this);\n    }\n    /**\n     * Update the menu based on the current state of its items.\n     *\n     * @param {EventTarget~Event} [event]\n     *        An event that triggered this function to run.\n     *\n     * @listens TextTrackList#addtrack\n     * @listens TextTrackList#removetrack\n     * @listens TextTrackList#change\n     */\n    ;\n\n    _proto.update = function update(event) {\n      if (!this.track_ || event && (event.type === 'addtrack' || event.type === 'removetrack')) {\n        this.setTrack(this.findChaptersTrack());\n      }\n\n      _TextTrackButton.prototype.update.call(this);\n    }\n    /**\n     * Set the currently selected track for the chapters button.\n     *\n     * @param {TextTrack} track\n     *        The new track to select. Nothing will change if this is the currently selected\n     *        track.\n     */\n    ;\n\n    _proto.setTrack = function setTrack(track) {\n      if (this.track_ === track) {\n        return;\n      }\n\n      if (!this.updateHandler_) {\n        this.updateHandler_ = this.update.bind(this);\n      } // here this.track_ refers to the old track instance\n\n\n      if (this.track_) {\n        var remoteTextTrackEl = this.player_.remoteTextTrackEls().getTrackElementByTrack_(this.track_);\n\n        if (remoteTextTrackEl) {\n          remoteTextTrackEl.removeEventListener('load', this.updateHandler_);\n        }\n\n        this.track_ = null;\n      }\n\n      this.track_ = track; // here this.track_ refers to the new track instance\n\n      if (this.track_) {\n        this.track_.mode = 'hidden';\n\n        var _remoteTextTrackEl = this.player_.remoteTextTrackEls().getTrackElementByTrack_(this.track_);\n\n        if (_remoteTextTrackEl) {\n          _remoteTextTrackEl.addEventListener('load', this.updateHandler_);\n        }\n      }\n    }\n    /**\n     * Find the track object that is currently in use by this ChaptersButton\n     *\n     * @return {TextTrack|undefined}\n     *         The current track or undefined if none was found.\n     */\n    ;\n\n    _proto.findChaptersTrack = function findChaptersTrack() {\n      var tracks = this.player_.textTracks() || [];\n\n      for (var i = tracks.length - 1; i >= 0; i--) {\n        // We will always choose the last track as our chaptersTrack\n        var track = tracks[i];\n\n        if (track.kind === this.kind_) {\n          return track;\n        }\n      }\n    }\n    /**\n     * Get the caption for the ChaptersButton based on the track label. This will also\n     * use the current tracks localized kind as a fallback if a label does not exist.\n     *\n     * @return {string}\n     *         The tracks current label or the localized track kind.\n     */\n    ;\n\n    _proto.getMenuCaption = function getMenuCaption() {\n      if (this.track_ && this.track_.label) {\n        return this.track_.label;\n      }\n\n      return this.localize(toTitleCase(this.kind_));\n    }\n    /**\n     * Create menu from chapter track\n     *\n     * @return {Menu}\n     *         New menu for the chapter buttons\n     */\n    ;\n\n    _proto.createMenu = function createMenu() {\n      this.options_.title = this.getMenuCaption();\n      return _TextTrackButton.prototype.createMenu.call(this);\n    }\n    /**\n     * Create a menu item for each text track\n     *\n     * @return {TextTrackMenuItem[]}\n     *         Array of menu items\n     */\n    ;\n\n    _proto.createItems = function createItems() {\n      var items = [];\n\n      if (!this.track_) {\n        return items;\n      }\n\n      var cues = this.track_.cues;\n\n      if (!cues) {\n        return items;\n      }\n\n      for (var i = 0, l = cues.length; i < l; i++) {\n        var cue = cues[i];\n        var mi = new ChaptersTrackMenuItem(this.player_, {\n          track: this.track_,\n          cue: cue\n        });\n        items.push(mi);\n      }\n\n      return items;\n    };\n\n    return ChaptersButton;\n  }(TextTrackButton);\n  /**\n   * `kind` of TextTrack to look for to associate it with this menu.\n   *\n   * @type {string}\n   * @private\n   */\n\n\n  ChaptersButton.prototype.kind_ = 'chapters';\n  /**\n   * The text that should display over the `ChaptersButton`s controls. Added for localization.\n   *\n   * @type {string}\n   * @private\n   */\n\n  ChaptersButton.prototype.controlText_ = 'Chapters';\n  Component.registerComponent('ChaptersButton', ChaptersButton);\n\n  /**\n   * The button component for toggling and selecting descriptions\n   *\n   * @extends TextTrackButton\n   */\n\n  var DescriptionsButton =\n  /*#__PURE__*/\n  function (_TextTrackButton) {\n    _inheritsLoose(DescriptionsButton, _TextTrackButton);\n\n    /**\n     * Creates an instance of this class.\n     *\n     * @param {Player} player\n     *        The `Player` that this class should be attached to.\n     *\n     * @param {Object} [options]\n     *        The key/value store of player options.\n     *\n     * @param {Component~ReadyCallback} [ready]\n     *        The function to call when this component is ready.\n     */\n    function DescriptionsButton(player, options, ready) {\n      var _this;\n\n      _this = _TextTrackButton.call(this, player, options, ready) || this;\n      var tracks = player.textTracks();\n      var changeHandler = bind(_assertThisInitialized(_assertThisInitialized(_this)), _this.handleTracksChange);\n      tracks.addEventListener('change', changeHandler);\n\n      _this.on('dispose', function () {\n        tracks.removeEventListener('change', changeHandler);\n      });\n\n      return _this;\n    }\n    /**\n     * Handle text track change\n     *\n     * @param {EventTarget~Event} event\n     *        The event that caused this function to run\n     *\n     * @listens TextTrackList#change\n     */\n\n\n    var _proto = DescriptionsButton.prototype;\n\n    _proto.handleTracksChange = function handleTracksChange(event) {\n      var tracks = this.player().textTracks();\n      var disabled = false; // Check whether a track of a different kind is showing\n\n      for (var i = 0, l = tracks.length; i < l; i++) {\n        var track = tracks[i];\n\n        if (track.kind !== this.kind_ && track.mode === 'showing') {\n          disabled = true;\n          break;\n        }\n      } // If another track is showing, disable this menu button\n\n\n      if (disabled) {\n        this.disable();\n      } else {\n        this.enable();\n      }\n    }\n    /**\n     * Builds the default DOM `className`.\n     *\n     * @return {string}\n     *         The DOM `className` for this object.\n     */\n    ;\n\n    _proto.buildCSSClass = function buildCSSClass() {\n      return \"vjs-descriptions-button \" + _TextTrackButton.prototype.buildCSSClass.call(this);\n    };\n\n    _proto.buildWrapperCSSClass = function buildWrapperCSSClass() {\n      return \"vjs-descriptions-button \" + _TextTrackButton.prototype.buildWrapperCSSClass.call(this);\n    };\n\n    return DescriptionsButton;\n  }(TextTrackButton);\n  /**\n   * `kind` of TextTrack to look for to associate it with this menu.\n   *\n   * @type {string}\n   * @private\n   */\n\n\n  DescriptionsButton.prototype.kind_ = 'descriptions';\n  /**\n   * The text that should display over the `DescriptionsButton`s controls. Added for localization.\n   *\n   * @type {string}\n   * @private\n   */\n\n  DescriptionsButton.prototype.controlText_ = 'Descriptions';\n  Component.registerComponent('DescriptionsButton', DescriptionsButton);\n\n  /**\n   * The button component for toggling and selecting subtitles\n   *\n   * @extends TextTrackButton\n   */\n\n  var SubtitlesButton =\n  /*#__PURE__*/\n  function (_TextTrackButton) {\n    _inheritsLoose(SubtitlesButton, _TextTrackButton);\n\n    /**\n     * Creates an instance of this class.\n     *\n     * @param {Player} player\n     *        The `Player` that this class should be attached to.\n     *\n     * @param {Object} [options]\n     *        The key/value store of player options.\n     *\n     * @param {Component~ReadyCallback} [ready]\n     *        The function to call when this component is ready.\n     */\n    function SubtitlesButton(player, options, ready) {\n      return _TextTrackButton.call(this, player, options, ready) || this;\n    }\n    /**\n     * Builds the default DOM `className`.\n     *\n     * @return {string}\n     *         The DOM `className` for this object.\n     */\n\n\n    var _proto = SubtitlesButton.prototype;\n\n    _proto.buildCSSClass = function buildCSSClass() {\n      return \"vjs-subtitles-button \" + _TextTrackButton.prototype.buildCSSClass.call(this);\n    };\n\n    _proto.buildWrapperCSSClass = function buildWrapperCSSClass() {\n      return \"vjs-subtitles-button \" + _TextTrackButton.prototype.buildWrapperCSSClass.call(this);\n    };\n\n    return SubtitlesButton;\n  }(TextTrackButton);\n  /**\n   * `kind` of TextTrack to look for to associate it with this menu.\n   *\n   * @type {string}\n   * @private\n   */\n\n\n  SubtitlesButton.prototype.kind_ = 'subtitles';\n  /**\n   * The text that should display over the `SubtitlesButton`s controls. Added for localization.\n   *\n   * @type {string}\n   * @private\n   */\n\n  SubtitlesButton.prototype.controlText_ = 'Subtitles';\n  Component.registerComponent('SubtitlesButton', SubtitlesButton);\n\n  /**\n   * The menu item for caption track settings menu\n   *\n   * @extends TextTrackMenuItem\n   */\n\n  var CaptionSettingsMenuItem =\n  /*#__PURE__*/\n  function (_TextTrackMenuItem) {\n    _inheritsLoose(CaptionSettingsMenuItem, _TextTrackMenuItem);\n\n    /**\n     * Creates an instance of this class.\n     *\n     * @param {Player} player\n     *        The `Player` that this class should be attached to.\n     *\n     * @param {Object} [options]\n     *        The key/value store of player options.\n     */\n    function CaptionSettingsMenuItem(player, options) {\n      var _this;\n\n      options.track = {\n        player: player,\n        kind: options.kind,\n        label: options.kind + ' settings',\n        selectable: false,\n        default: false,\n        mode: 'disabled'\n      }; // CaptionSettingsMenuItem has no concept of 'selected'\n\n      options.selectable = false;\n      options.name = 'CaptionSettingsMenuItem';\n      _this = _TextTrackMenuItem.call(this, player, options) || this;\n\n      _this.addClass('vjs-texttrack-settings');\n\n      _this.controlText(', opens ' + options.kind + ' settings dialog');\n\n      return _this;\n    }\n    /**\n     * This gets called when an `CaptionSettingsMenuItem` is \"clicked\". See\n     * {@link ClickableComponent} for more detailed information on what a click can be.\n     *\n     * @param {EventTarget~Event} [event]\n     *        The `keydown`, `tap`, or `click` event that caused this function to be\n     *        called.\n     *\n     * @listens tap\n     * @listens click\n     */\n\n\n    var _proto = CaptionSettingsMenuItem.prototype;\n\n    _proto.handleClick = function handleClick(event) {\n      this.player().getChild('textTrackSettings').open();\n    };\n\n    return CaptionSettingsMenuItem;\n  }(TextTrackMenuItem);\n\n  Component.registerComponent('CaptionSettingsMenuItem', CaptionSettingsMenuItem);\n\n  /**\n   * The button component for toggling and selecting captions\n   *\n   * @extends TextTrackButton\n   */\n\n  var CaptionsButton =\n  /*#__PURE__*/\n  function (_TextTrackButton) {\n    _inheritsLoose(CaptionsButton, _TextTrackButton);\n\n    /**\n     * Creates an instance of this class.\n     *\n     * @param {Player} player\n     *        The `Player` that this class should be attached to.\n     *\n     * @param {Object} [options]\n     *        The key/value store of player options.\n     *\n     * @param {Component~ReadyCallback} [ready]\n     *        The function to call when this component is ready.\n     */\n    function CaptionsButton(player, options, ready) {\n      return _TextTrackButton.call(this, player, options, ready) || this;\n    }\n    /**\n     * Builds the default DOM `className`.\n     *\n     * @return {string}\n     *         The DOM `className` for this object.\n     */\n\n\n    var _proto = CaptionsButton.prototype;\n\n    _proto.buildCSSClass = function buildCSSClass() {\n      return \"vjs-captions-button \" + _TextTrackButton.prototype.buildCSSClass.call(this);\n    };\n\n    _proto.buildWrapperCSSClass = function buildWrapperCSSClass() {\n      return \"vjs-captions-button \" + _TextTrackButton.prototype.buildWrapperCSSClass.call(this);\n    }\n    /**\n     * Create caption menu items\n     *\n     * @return {CaptionSettingsMenuItem[]}\n     *         The array of current menu items.\n     */\n    ;\n\n    _proto.createItems = function createItems() {\n      var items = [];\n\n      if (!(this.player().tech_ && this.player().tech_.featuresNativeTextTracks) && this.player().getChild('textTrackSettings')) {\n        items.push(new CaptionSettingsMenuItem(this.player_, {\n          kind: this.kind_\n        }));\n        this.hideThreshold_ += 1;\n      }\n\n      return _TextTrackButton.prototype.createItems.call(this, items);\n    };\n\n    return CaptionsButton;\n  }(TextTrackButton);\n  /**\n   * `kind` of TextTrack to look for to associate it with this menu.\n   *\n   * @type {string}\n   * @private\n   */\n\n\n  CaptionsButton.prototype.kind_ = 'captions';\n  /**\n   * The text that should display over the `CaptionsButton`s controls. Added for localization.\n   *\n   * @type {string}\n   * @private\n   */\n\n  CaptionsButton.prototype.controlText_ = 'Captions';\n  Component.registerComponent('CaptionsButton', CaptionsButton);\n\n  /**\n   * SubsCapsMenuItem has an [cc] icon to distinguish captions from subtitles\n   * in the SubsCapsMenu.\n   *\n   * @extends TextTrackMenuItem\n   */\n\n  var SubsCapsMenuItem =\n  /*#__PURE__*/\n  function (_TextTrackMenuItem) {\n    _inheritsLoose(SubsCapsMenuItem, _TextTrackMenuItem);\n\n    function SubsCapsMenuItem() {\n      return _TextTrackMenuItem.apply(this, arguments) || this;\n    }\n\n    var _proto = SubsCapsMenuItem.prototype;\n\n    _proto.createEl = function createEl(type, props, attrs) {\n      var innerHTML = \"<span class=\\\"vjs-menu-item-text\\\">\" + this.localize(this.options_.label);\n\n      if (this.options_.track.kind === 'captions') {\n        innerHTML += \"\\n        <span aria-hidden=\\\"true\\\" class=\\\"vjs-icon-placeholder\\\"></span>\\n        <span class=\\\"vjs-control-text\\\"> \" + this.localize('Captions') + \"</span>\\n      \";\n      }\n\n      innerHTML += '</span>';\n\n      var el = _TextTrackMenuItem.prototype.createEl.call(this, type, assign({\n        innerHTML: innerHTML\n      }, props), attrs);\n\n      return el;\n    };\n\n    return SubsCapsMenuItem;\n  }(TextTrackMenuItem);\n\n  Component.registerComponent('SubsCapsMenuItem', SubsCapsMenuItem);\n\n  /**\n   * The button component for toggling and selecting captions and/or subtitles\n   *\n   * @extends TextTrackButton\n   */\n\n  var SubsCapsButton =\n  /*#__PURE__*/\n  function (_TextTrackButton) {\n    _inheritsLoose(SubsCapsButton, _TextTrackButton);\n\n    function SubsCapsButton(player, options) {\n      var _this;\n\n      if (options === void 0) {\n        options = {};\n      }\n\n      _this = _TextTrackButton.call(this, player, options) || this; // Although North America uses \"captions\" in most cases for\n      // \"captions and subtitles\" other locales use \"subtitles\"\n\n      _this.label_ = 'subtitles';\n\n      if (['en', 'en-us', 'en-ca', 'fr-ca'].indexOf(_this.player_.language_) > -1) {\n        _this.label_ = 'captions';\n      }\n\n      _this.menuButton_.controlText(toTitleCase(_this.label_));\n\n      return _this;\n    }\n    /**\n     * Builds the default DOM `className`.\n     *\n     * @return {string}\n     *         The DOM `className` for this object.\n     */\n\n\n    var _proto = SubsCapsButton.prototype;\n\n    _proto.buildCSSClass = function buildCSSClass() {\n      return \"vjs-subs-caps-button \" + _TextTrackButton.prototype.buildCSSClass.call(this);\n    };\n\n    _proto.buildWrapperCSSClass = function buildWrapperCSSClass() {\n      return \"vjs-subs-caps-button \" + _TextTrackButton.prototype.buildWrapperCSSClass.call(this);\n    }\n    /**\n     * Create caption/subtitles menu items\n     *\n     * @return {CaptionSettingsMenuItem[]}\n     *         The array of current menu items.\n     */\n    ;\n\n    _proto.createItems = function createItems() {\n      var items = [];\n\n      if (!(this.player().tech_ && this.player().tech_.featuresNativeTextTracks) && this.player().getChild('textTrackSettings')) {\n        items.push(new CaptionSettingsMenuItem(this.player_, {\n          kind: this.label_\n        }));\n        this.hideThreshold_ += 1;\n      }\n\n      items = _TextTrackButton.prototype.createItems.call(this, items, SubsCapsMenuItem);\n      return items;\n    };\n\n    return SubsCapsButton;\n  }(TextTrackButton);\n  /**\n   * `kind`s of TextTrack to look for to associate it with this menu.\n   *\n   * @type {array}\n   * @private\n   */\n\n\n  SubsCapsButton.prototype.kinds_ = ['captions', 'subtitles'];\n  /**\n   * The text that should display over the `SubsCapsButton`s controls.\n   *\n   *\n   * @type {string}\n   * @private\n   */\n\n  SubsCapsButton.prototype.controlText_ = 'Subtitles';\n  Component.registerComponent('SubsCapsButton', SubsCapsButton);\n\n  /**\n   * An {@link AudioTrack} {@link MenuItem}\n   *\n   * @extends MenuItem\n   */\n\n  var AudioTrackMenuItem =\n  /*#__PURE__*/\n  function (_MenuItem) {\n    _inheritsLoose(AudioTrackMenuItem, _MenuItem);\n\n    /**\n     * Creates an instance of this class.\n     *\n     * @param {Player} player\n     *        The `Player` that this class should be attached to.\n     *\n     * @param {Object} [options]\n     *        The key/value store of player options.\n     */\n    function AudioTrackMenuItem(player, options) {\n      var _this;\n\n      var track = options.track;\n      var tracks = player.audioTracks(); // Modify options for parent MenuItem class's init.\n\n      options.label = track.label || track.language || 'Unknown';\n      options.selected = track.enabled;\n      _this = _MenuItem.call(this, player, options) || this;\n      _this.track = track;\n\n      _this.addClass(\"vjs-\" + track.kind + \"-menu-item\");\n\n      var changeHandler = function changeHandler() {\n        for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {\n          args[_key] = arguments[_key];\n        }\n\n        _this.handleTracksChange.apply(_assertThisInitialized(_assertThisInitialized(_this)), args);\n      };\n\n      tracks.addEventListener('change', changeHandler);\n\n      _this.on('dispose', function () {\n        tracks.removeEventListener('change', changeHandler);\n      });\n\n      return _this;\n    }\n\n    var _proto = AudioTrackMenuItem.prototype;\n\n    _proto.createEl = function createEl(type, props, attrs) {\n      var innerHTML = \"<span class=\\\"vjs-menu-item-text\\\">\" + this.localize(this.options_.label);\n\n      if (this.options_.track.kind === 'main-desc') {\n        innerHTML += \"\\n        <span aria-hidden=\\\"true\\\" class=\\\"vjs-icon-placeholder\\\"></span>\\n        <span class=\\\"vjs-control-text\\\"> \" + this.localize('Descriptions') + \"</span>\\n      \";\n      }\n\n      innerHTML += '</span>';\n\n      var el = _MenuItem.prototype.createEl.call(this, type, assign({\n        innerHTML: innerHTML\n      }, props), attrs);\n\n      return el;\n    }\n    /**\n     * This gets called when an `AudioTrackMenuItem is \"clicked\". See {@link ClickableComponent}\n     * for more detailed information on what a click can be.\n     *\n     * @param {EventTarget~Event} [event]\n     *        The `keydown`, `tap`, or `click` event that caused this function to be\n     *        called.\n     *\n     * @listens tap\n     * @listens click\n     */\n    ;\n\n    _proto.handleClick = function handleClick(event) {\n      var tracks = this.player_.audioTracks();\n\n      _MenuItem.prototype.handleClick.call(this, event);\n\n      for (var i = 0; i < tracks.length; i++) {\n        var track = tracks[i];\n        track.enabled = track === this.track;\n      }\n    }\n    /**\n     * Handle any {@link AudioTrack} change.\n     *\n     * @param {EventTarget~Event} [event]\n     *        The {@link AudioTrackList#change} event that caused this to run.\n     *\n     * @listens AudioTrackList#change\n     */\n    ;\n\n    _proto.handleTracksChange = function handleTracksChange(event) {\n      this.selected(this.track.enabled);\n    };\n\n    return AudioTrackMenuItem;\n  }(MenuItem);\n\n  Component.registerComponent('AudioTrackMenuItem', AudioTrackMenuItem);\n\n  /**\n   * The base class for buttons that toggle specific {@link AudioTrack} types.\n   *\n   * @extends TrackButton\n   */\n\n  var AudioTrackButton =\n  /*#__PURE__*/\n  function (_TrackButton) {\n    _inheritsLoose(AudioTrackButton, _TrackButton);\n\n    /**\n     * Creates an instance of this class.\n     *\n     * @param {Player} player\n     *        The `Player` that this class should be attached to.\n     *\n     * @param {Object} [options={}]\n     *        The key/value store of player options.\n     */\n    function AudioTrackButton(player, options) {\n      if (options === void 0) {\n        options = {};\n      }\n\n      options.tracks = player.audioTracks();\n      return _TrackButton.call(this, player, options) || this;\n    }\n    /**\n     * Builds the default DOM `className`.\n     *\n     * @return {string}\n     *         The DOM `className` for this object.\n     */\n\n\n    var _proto = AudioTrackButton.prototype;\n\n    _proto.buildCSSClass = function buildCSSClass() {\n      return \"vjs-audio-button \" + _TrackButton.prototype.buildCSSClass.call(this);\n    };\n\n    _proto.buildWrapperCSSClass = function buildWrapperCSSClass() {\n      return \"vjs-audio-button \" + _TrackButton.prototype.buildWrapperCSSClass.call(this);\n    }\n    /**\n     * Create a menu item for each audio track\n     *\n     * @param {AudioTrackMenuItem[]} [items=[]]\n     *        An array of existing menu items to use.\n     *\n     * @return {AudioTrackMenuItem[]}\n     *         An array of menu items\n     */\n    ;\n\n    _proto.createItems = function createItems(items) {\n      if (items === void 0) {\n        items = [];\n      }\n\n      // if there's only one audio track, there no point in showing it\n      this.hideThreshold_ = 1;\n      var tracks = this.player_.audioTracks();\n\n      for (var i = 0; i < tracks.length; i++) {\n        var track = tracks[i];\n        items.push(new AudioTrackMenuItem(this.player_, {\n          track: track,\n          // MenuItem is selectable\n          selectable: true,\n          // MenuItem is NOT multiSelectable (i.e. only one can be marked \"selected\" at a time)\n          multiSelectable: false\n        }));\n      }\n\n      return items;\n    };\n\n    return AudioTrackButton;\n  }(TrackButton);\n  /**\n   * The text that should display over the `AudioTrackButton`s controls. Added for localization.\n   *\n   * @type {string}\n   * @private\n   */\n\n\n  AudioTrackButton.prototype.controlText_ = 'Audio Track';\n  Component.registerComponent('AudioTrackButton', AudioTrackButton);\n\n  /**\n   * The specific menu item type for selecting a playback rate.\n   *\n   * @extends MenuItem\n   */\n\n  var PlaybackRateMenuItem =\n  /*#__PURE__*/\n  function (_MenuItem) {\n    _inheritsLoose(PlaybackRateMenuItem, _MenuItem);\n\n    /**\n     * Creates an instance of this class.\n     *\n     * @param {Player} player\n     *        The `Player` that this class should be attached to.\n     *\n     * @param {Object} [options]\n     *        The key/value store of player options.\n     */\n    function PlaybackRateMenuItem(player, options) {\n      var _this;\n\n      var label = options.rate;\n      var rate = parseFloat(label, 10); // Modify options for parent MenuItem class's init.\n\n      options.label = label;\n      options.selected = rate === 1;\n      options.selectable = true;\n      options.multiSelectable = false;\n      _this = _MenuItem.call(this, player, options) || this;\n      _this.label = label;\n      _this.rate = rate;\n\n      _this.on(player, 'ratechange', _this.update);\n\n      return _this;\n    }\n    /**\n     * This gets called when an `PlaybackRateMenuItem` is \"clicked\". See\n     * {@link ClickableComponent} for more detailed information on what a click can be.\n     *\n     * @param {EventTarget~Event} [event]\n     *        The `keydown`, `tap`, or `click` event that caused this function to be\n     *        called.\n     *\n     * @listens tap\n     * @listens click\n     */\n\n\n    var _proto = PlaybackRateMenuItem.prototype;\n\n    _proto.handleClick = function handleClick(event) {\n      _MenuItem.prototype.handleClick.call(this);\n\n      this.player().playbackRate(this.rate);\n    }\n    /**\n     * Update the PlaybackRateMenuItem when the playbackrate changes.\n     *\n     * @param {EventTarget~Event} [event]\n     *        The `ratechange` event that caused this function to run.\n     *\n     * @listens Player#ratechange\n     */\n    ;\n\n    _proto.update = function update(event) {\n      this.selected(this.player().playbackRate() === this.rate);\n    };\n\n    return PlaybackRateMenuItem;\n  }(MenuItem);\n  /**\n   * The text that should display over the `PlaybackRateMenuItem`s controls. Added for localization.\n   *\n   * @type {string}\n   * @private\n   */\n\n\n  PlaybackRateMenuItem.prototype.contentElType = 'button';\n  Component.registerComponent('PlaybackRateMenuItem', PlaybackRateMenuItem);\n\n  /**\n   * The component for controlling the playback rate.\n   *\n   * @extends MenuButton\n   */\n\n  var PlaybackRateMenuButton =\n  /*#__PURE__*/\n  function (_MenuButton) {\n    _inheritsLoose(PlaybackRateMenuButton, _MenuButton);\n\n    /**\n     * Creates an instance of this class.\n     *\n     * @param {Player} player\n     *        The `Player` that this class should be attached to.\n     *\n     * @param {Object} [options]\n     *        The key/value store of player options.\n     */\n    function PlaybackRateMenuButton(player, options) {\n      var _this;\n\n      _this = _MenuButton.call(this, player, options) || this;\n\n      _this.updateVisibility();\n\n      _this.updateLabel();\n\n      _this.on(player, 'loadstart', _this.updateVisibility);\n\n      _this.on(player, 'ratechange', _this.updateLabel);\n\n      return _this;\n    }\n    /**\n     * Create the `Component`'s DOM element\n     *\n     * @return {Element}\n     *         The element that was created.\n     */\n\n\n    var _proto = PlaybackRateMenuButton.prototype;\n\n    _proto.createEl = function createEl$$1() {\n      var el = _MenuButton.prototype.createEl.call(this);\n\n      this.labelEl_ = createEl('div', {\n        className: 'vjs-playback-rate-value',\n        innerHTML: '1x'\n      });\n      el.appendChild(this.labelEl_);\n      return el;\n    };\n\n    _proto.dispose = function dispose() {\n      this.labelEl_ = null;\n\n      _MenuButton.prototype.dispose.call(this);\n    }\n    /**\n     * Builds the default DOM `className`.\n     *\n     * @return {string}\n     *         The DOM `className` for this object.\n     */\n    ;\n\n    _proto.buildCSSClass = function buildCSSClass() {\n      return \"vjs-playback-rate \" + _MenuButton.prototype.buildCSSClass.call(this);\n    };\n\n    _proto.buildWrapperCSSClass = function buildWrapperCSSClass() {\n      return \"vjs-playback-rate \" + _MenuButton.prototype.buildWrapperCSSClass.call(this);\n    }\n    /**\n     * Create the playback rate menu\n     *\n     * @return {Menu}\n     *         Menu object populated with {@link PlaybackRateMenuItem}s\n     */\n    ;\n\n    _proto.createMenu = function createMenu() {\n      var menu = new Menu(this.player());\n      var rates = this.playbackRates();\n\n      if (rates) {\n        for (var i = rates.length - 1; i >= 0; i--) {\n          menu.addChild(new PlaybackRateMenuItem(this.player(), {\n            rate: rates[i] + 'x'\n          }));\n        }\n      }\n\n      return menu;\n    }\n    /**\n     * Updates ARIA accessibility attributes\n     */\n    ;\n\n    _proto.updateARIAAttributes = function updateARIAAttributes() {\n      // Current playback rate\n      this.el().setAttribute('aria-valuenow', this.player().playbackRate());\n    }\n    /**\n     * This gets called when an `PlaybackRateMenuButton` is \"clicked\". See\n     * {@link ClickableComponent} for more detailed information on what a click can be.\n     *\n     * @param {EventTarget~Event} [event]\n     *        The `keydown`, `tap`, or `click` event that caused this function to be\n     *        called.\n     *\n     * @listens tap\n     * @listens click\n     */\n    ;\n\n    _proto.handleClick = function handleClick(event) {\n      // select next rate option\n      var currentRate = this.player().playbackRate();\n      var rates = this.playbackRates(); // this will select first one if the last one currently selected\n\n      var newRate = rates[0];\n\n      for (var i = 0; i < rates.length; i++) {\n        if (rates[i] > currentRate) {\n          newRate = rates[i];\n          break;\n        }\n      }\n\n      this.player().playbackRate(newRate);\n    }\n    /**\n     * Get possible playback rates\n     *\n     * @return {Array}\n     *         All possible playback rates\n     */\n    ;\n\n    _proto.playbackRates = function playbackRates() {\n      return this.options_.playbackRates || this.options_.playerOptions && this.options_.playerOptions.playbackRates;\n    }\n    /**\n     * Get whether playback rates is supported by the tech\n     * and an array of playback rates exists\n     *\n     * @return {boolean}\n     *         Whether changing playback rate is supported\n     */\n    ;\n\n    _proto.playbackRateSupported = function playbackRateSupported() {\n      return this.player().tech_ && this.player().tech_.featuresPlaybackRate && this.playbackRates() && this.playbackRates().length > 0;\n    }\n    /**\n     * Hide playback rate controls when they're no playback rate options to select\n     *\n     * @param {EventTarget~Event} [event]\n     *        The event that caused this function to run.\n     *\n     * @listens Player#loadstart\n     */\n    ;\n\n    _proto.updateVisibility = function updateVisibility(event) {\n      if (this.playbackRateSupported()) {\n        this.removeClass('vjs-hidden');\n      } else {\n        this.addClass('vjs-hidden');\n      }\n    }\n    /**\n     * Update button label when rate changed\n     *\n     * @param {EventTarget~Event} [event]\n     *        The event that caused this function to run.\n     *\n     * @listens Player#ratechange\n     */\n    ;\n\n    _proto.updateLabel = function updateLabel(event) {\n      if (this.playbackRateSupported()) {\n        this.labelEl_.innerHTML = this.player().playbackRate() + 'x';\n      }\n    };\n\n    return PlaybackRateMenuButton;\n  }(MenuButton);\n  /**\n   * The text that should display over the `FullscreenToggle`s controls. Added for localization.\n   *\n   * @type {string}\n   * @private\n   */\n\n\n  PlaybackRateMenuButton.prototype.controlText_ = 'Playback Rate';\n  Component.registerComponent('PlaybackRateMenuButton', PlaybackRateMenuButton);\n\n  /**\n   * Just an empty spacer element that can be used as an append point for plugins, etc.\n   * Also can be used to create space between elements when necessary.\n   *\n   * @extends Component\n   */\n\n  var Spacer =\n  /*#__PURE__*/\n  function (_Component) {\n    _inheritsLoose(Spacer, _Component);\n\n    function Spacer() {\n      return _Component.apply(this, arguments) || this;\n    }\n\n    var _proto = Spacer.prototype;\n\n    /**\n    * Builds the default DOM `className`.\n    *\n    * @return {string}\n    *         The DOM `className` for this object.\n    */\n    _proto.buildCSSClass = function buildCSSClass() {\n      return \"vjs-spacer \" + _Component.prototype.buildCSSClass.call(this);\n    }\n    /**\n     * Create the `Component`'s DOM element\n     *\n     * @return {Element}\n     *         The element that was created.\n     */\n    ;\n\n    _proto.createEl = function createEl() {\n      return _Component.prototype.createEl.call(this, 'div', {\n        className: this.buildCSSClass()\n      });\n    };\n\n    return Spacer;\n  }(Component);\n\n  Component.registerComponent('Spacer', Spacer);\n\n  /**\n   * Spacer specifically meant to be used as an insertion point for new plugins, etc.\n   *\n   * @extends Spacer\n   */\n\n  var CustomControlSpacer =\n  /*#__PURE__*/\n  function (_Spacer) {\n    _inheritsLoose(CustomControlSpacer, _Spacer);\n\n    function CustomControlSpacer() {\n      return _Spacer.apply(this, arguments) || this;\n    }\n\n    var _proto = CustomControlSpacer.prototype;\n\n    /**\n     * Builds the default DOM `className`.\n     *\n     * @return {string}\n     *         The DOM `className` for this object.\n     */\n    _proto.buildCSSClass = function buildCSSClass() {\n      return \"vjs-custom-control-spacer \" + _Spacer.prototype.buildCSSClass.call(this);\n    }\n    /**\n     * Create the `Component`'s DOM element\n     *\n     * @return {Element}\n     *         The element that was created.\n     */\n    ;\n\n    _proto.createEl = function createEl() {\n      var el = _Spacer.prototype.createEl.call(this, {\n        className: this.buildCSSClass()\n      }); // No-flex/table-cell mode requires there be some content\n      // in the cell to fill the remaining space of the table.\n\n\n      el.innerHTML = \"\\xA0\";\n      return el;\n    };\n\n    return CustomControlSpacer;\n  }(Spacer);\n\n  Component.registerComponent('CustomControlSpacer', CustomControlSpacer);\n\n  /**\n   * Container of main controls.\n   *\n   * @extends Component\n   */\n\n  var ControlBar =\n  /*#__PURE__*/\n  function (_Component) {\n    _inheritsLoose(ControlBar, _Component);\n\n    function ControlBar() {\n      return _Component.apply(this, arguments) || this;\n    }\n\n    var _proto = ControlBar.prototype;\n\n    /**\n     * Create the `Component`'s DOM element\n     *\n     * @return {Element}\n     *         The element that was created.\n     */\n    _proto.createEl = function createEl() {\n      return _Component.prototype.createEl.call(this, 'div', {\n        className: 'vjs-control-bar',\n        dir: 'ltr'\n      });\n    };\n\n    return ControlBar;\n  }(Component);\n  /**\n   * Default options for `ControlBar`\n   *\n   * @type {Object}\n   * @private\n   */\n\n\n  ControlBar.prototype.options_ = {\n    children: ['playToggle', 'volumePanel', 'currentTimeDisplay', 'timeDivider', 'durationDisplay', 'progressControl', 'liveDisplay', 'seekToLive', 'remainingTimeDisplay', 'customControlSpacer', 'playbackRateMenuButton', 'chaptersButton', 'descriptionsButton', 'subsCapsButton', 'audioTrackButton', 'fullscreenToggle']\n  };\n  Component.registerComponent('ControlBar', ControlBar);\n\n  /**\n   * A display that indicates an error has occurred. This means that the video\n   * is unplayable.\n   *\n   * @extends ModalDialog\n   */\n\n  var ErrorDisplay =\n  /*#__PURE__*/\n  function (_ModalDialog) {\n    _inheritsLoose(ErrorDisplay, _ModalDialog);\n\n    /**\n     * Creates an instance of this class.\n     *\n     * @param  {Player} player\n     *         The `Player` that this class should be attached to.\n     *\n     * @param  {Object} [options]\n     *         The key/value store of player options.\n     */\n    function ErrorDisplay(player, options) {\n      var _this;\n\n      _this = _ModalDialog.call(this, player, options) || this;\n\n      _this.on(player, 'error', _this.open);\n\n      return _this;\n    }\n    /**\n     * Builds the default DOM `className`.\n     *\n     * @return {string}\n     *         The DOM `className` for this object.\n     *\n     * @deprecated Since version 5.\n     */\n\n\n    var _proto = ErrorDisplay.prototype;\n\n    _proto.buildCSSClass = function buildCSSClass() {\n      return \"vjs-error-display \" + _ModalDialog.prototype.buildCSSClass.call(this);\n    }\n    /**\n     * Gets the localized error message based on the `Player`s error.\n     *\n     * @return {string}\n     *         The `Player`s error message localized or an empty string.\n     */\n    ;\n\n    _proto.content = function content() {\n      var error = this.player().error();\n      return error ? this.localize(error.message) : '';\n    };\n\n    return ErrorDisplay;\n  }(ModalDialog);\n  /**\n   * The default options for an `ErrorDisplay`.\n   *\n   * @private\n   */\n\n\n  ErrorDisplay.prototype.options_ = mergeOptions(ModalDialog.prototype.options_, {\n    pauseOnOpen: false,\n    fillAlways: true,\n    temporary: false,\n    uncloseable: true\n  });\n  Component.registerComponent('ErrorDisplay', ErrorDisplay);\n\n  var LOCAL_STORAGE_KEY = 'vjs-text-track-settings';\n  var COLOR_BLACK = ['#000', 'Black'];\n  var COLOR_BLUE = ['#00F', 'Blue'];\n  var COLOR_CYAN = ['#0FF', 'Cyan'];\n  var COLOR_GREEN = ['#0F0', 'Green'];\n  var COLOR_MAGENTA = ['#F0F', 'Magenta'];\n  var COLOR_RED = ['#F00', 'Red'];\n  var COLOR_WHITE = ['#FFF', 'White'];\n  var COLOR_YELLOW = ['#FF0', 'Yellow'];\n  var OPACITY_OPAQUE = ['1', 'Opaque'];\n  var OPACITY_SEMI = ['0.5', 'Semi-Transparent'];\n  var OPACITY_TRANS = ['0', 'Transparent']; // Configuration for the various <select> elements in the DOM of this component.\n  //\n  // Possible keys include:\n  //\n  // `default`:\n  //   The default option index. Only needs to be provided if not zero.\n  // `parser`:\n  //   A function which is used to parse the value from the selected option in\n  //   a customized way.\n  // `selector`:\n  //   The selector used to find the associated <select> element.\n\n  var selectConfigs = {\n    backgroundColor: {\n      selector: '.vjs-bg-color > select',\n      id: 'captions-background-color-%s',\n      label: 'Color',\n      options: [COLOR_BLACK, COLOR_WHITE, COLOR_RED, COLOR_GREEN, COLOR_BLUE, COLOR_YELLOW, COLOR_MAGENTA, COLOR_CYAN]\n    },\n    backgroundOpacity: {\n      selector: '.vjs-bg-opacity > select',\n      id: 'captions-background-opacity-%s',\n      label: 'Transparency',\n      options: [OPACITY_OPAQUE, OPACITY_SEMI, OPACITY_TRANS]\n    },\n    color: {\n      selector: '.vjs-fg-color > select',\n      id: 'captions-foreground-color-%s',\n      label: 'Color',\n      options: [COLOR_WHITE, COLOR_BLACK, COLOR_RED, COLOR_GREEN, COLOR_BLUE, COLOR_YELLOW, COLOR_MAGENTA, COLOR_CYAN]\n    },\n    edgeStyle: {\n      selector: '.vjs-edge-style > select',\n      id: '%s',\n      label: 'Text Edge Style',\n      options: [['none', 'None'], ['raised', 'Raised'], ['depressed', 'Depressed'], ['uniform', 'Uniform'], ['dropshadow', 'Dropshadow']]\n    },\n    fontFamily: {\n      selector: '.vjs-font-family > select',\n      id: 'captions-font-family-%s',\n      label: 'Font Family',\n      options: [['proportionalSansSerif', 'Proportional Sans-Serif'], ['monospaceSansSerif', 'Monospace Sans-Serif'], ['proportionalSerif', 'Proportional Serif'], ['monospaceSerif', 'Monospace Serif'], ['casual', 'Casual'], ['script', 'Script'], ['small-caps', 'Small Caps']]\n    },\n    fontPercent: {\n      selector: '.vjs-font-percent > select',\n      id: 'captions-font-size-%s',\n      label: 'Font Size',\n      options: [['0.50', '50%'], ['0.75', '75%'], ['1.00', '100%'], ['1.25', '125%'], ['1.50', '150%'], ['1.75', '175%'], ['2.00', '200%'], ['3.00', '300%'], ['4.00', '400%']],\n      default: 2,\n      parser: function parser(v) {\n        return v === '1.00' ? null : Number(v);\n      }\n    },\n    textOpacity: {\n      selector: '.vjs-text-opacity > select',\n      id: 'captions-foreground-opacity-%s',\n      label: 'Transparency',\n      options: [OPACITY_OPAQUE, OPACITY_SEMI]\n    },\n    // Options for this object are defined below.\n    windowColor: {\n      selector: '.vjs-window-color > select',\n      id: 'captions-window-color-%s',\n      label: 'Color'\n    },\n    // Options for this object are defined below.\n    windowOpacity: {\n      selector: '.vjs-window-opacity > select',\n      id: 'captions-window-opacity-%s',\n      label: 'Transparency',\n      options: [OPACITY_TRANS, OPACITY_SEMI, OPACITY_OPAQUE]\n    }\n  };\n  selectConfigs.windowColor.options = selectConfigs.backgroundColor.options;\n  /**\n   * Get the actual value of an option.\n   *\n   * @param  {string} value\n   *         The value to get\n   *\n   * @param  {Function} [parser]\n   *         Optional function to adjust the value.\n   *\n   * @return {Mixed}\n   *         - Will be `undefined` if no value exists\n   *         - Will be `undefined` if the given value is \"none\".\n   *         - Will be the actual value otherwise.\n   *\n   * @private\n   */\n\n  function parseOptionValue(value, parser) {\n    if (parser) {\n      value = parser(value);\n    }\n\n    if (value && value !== 'none') {\n      return value;\n    }\n  }\n  /**\n   * Gets the value of the selected <option> element within a <select> element.\n   *\n   * @param  {Element} el\n   *         the element to look in\n   *\n   * @param  {Function} [parser]\n   *         Optional function to adjust the value.\n   *\n   * @return {Mixed}\n   *         - Will be `undefined` if no value exists\n   *         - Will be `undefined` if the given value is \"none\".\n   *         - Will be the actual value otherwise.\n   *\n   * @private\n   */\n\n\n  function getSelectedOptionValue(el, parser) {\n    var value = el.options[el.options.selectedIndex].value;\n    return parseOptionValue(value, parser);\n  }\n  /**\n   * Sets the selected <option> element within a <select> element based on a\n   * given value.\n   *\n   * @param {Element} el\n   *        The element to look in.\n   *\n   * @param {string} value\n   *        the property to look on.\n   *\n   * @param {Function} [parser]\n   *        Optional function to adjust the value before comparing.\n   *\n   * @private\n   */\n\n\n  function setSelectedOption(el, value, parser) {\n    if (!value) {\n      return;\n    }\n\n    for (var i = 0; i < el.options.length; i++) {\n      if (parseOptionValue(el.options[i].value, parser) === value) {\n        el.selectedIndex = i;\n        break;\n      }\n    }\n  }\n  /**\n   * Manipulate Text Tracks settings.\n   *\n   * @extends ModalDialog\n   */\n\n\n  var TextTrackSettings =\n  /*#__PURE__*/\n  function (_ModalDialog) {\n    _inheritsLoose(TextTrackSettings, _ModalDialog);\n\n    /**\n     * Creates an instance of this class.\n     *\n     * @param {Player} player\n     *         The `Player` that this class should be attached to.\n     *\n     * @param {Object} [options]\n     *         The key/value store of player options.\n     */\n    function TextTrackSettings(player, options) {\n      var _this;\n\n      options.temporary = false;\n      _this = _ModalDialog.call(this, player, options) || this;\n      _this.updateDisplay = bind(_assertThisInitialized(_assertThisInitialized(_this)), _this.updateDisplay); // fill the modal and pretend we have opened it\n\n      _this.fill();\n\n      _this.hasBeenOpened_ = _this.hasBeenFilled_ = true;\n      _this.endDialog = createEl('p', {\n        className: 'vjs-control-text',\n        textContent: _this.localize('End of dialog window.')\n      });\n\n      _this.el().appendChild(_this.endDialog);\n\n      _this.setDefaults(); // Grab `persistTextTrackSettings` from the player options if not passed in child options\n\n\n      if (options.persistTextTrackSettings === undefined) {\n        _this.options_.persistTextTrackSettings = _this.options_.playerOptions.persistTextTrackSettings;\n      }\n\n      _this.on(_this.$('.vjs-done-button'), 'click', function () {\n        _this.saveSettings();\n\n        _this.close();\n      });\n\n      _this.on(_this.$('.vjs-default-button'), 'click', function () {\n        _this.setDefaults();\n\n        _this.updateDisplay();\n      });\n\n      each(selectConfigs, function (config) {\n        _this.on(_this.$(config.selector), 'change', _this.updateDisplay);\n      });\n\n      if (_this.options_.persistTextTrackSettings) {\n        _this.restoreSettings();\n      }\n\n      return _this;\n    }\n\n    var _proto = TextTrackSettings.prototype;\n\n    _proto.dispose = function dispose() {\n      this.endDialog = null;\n\n      _ModalDialog.prototype.dispose.call(this);\n    }\n    /**\n     * Create a <select> element with configured options.\n     *\n     * @param {string} key\n     *        Configuration key to use during creation.\n     *\n     * @return {string}\n     *         An HTML string.\n     *\n     * @private\n     */\n    ;\n\n    _proto.createElSelect_ = function createElSelect_(key, legendId, type) {\n      var _this2 = this;\n\n      if (legendId === void 0) {\n        legendId = '';\n      }\n\n      if (type === void 0) {\n        type = 'label';\n      }\n\n      var config = selectConfigs[key];\n      var id = config.id.replace('%s', this.id_);\n      var selectLabelledbyIds = [legendId, id].join(' ').trim();\n      return [\"<\" + type + \" id=\\\"\" + id + \"\\\" class=\\\"\" + (type === 'label' ? 'vjs-label' : '') + \"\\\">\", this.localize(config.label), \"</\" + type + \">\", \"<select aria-labelledby=\\\"\" + selectLabelledbyIds + \"\\\">\"].concat(config.options.map(function (o) {\n        var optionId = id + '-' + o[1].replace(/\\W+/g, '');\n        return [\"<option id=\\\"\" + optionId + \"\\\" value=\\\"\" + o[0] + \"\\\" \", \"aria-labelledby=\\\"\" + selectLabelledbyIds + \" \" + optionId + \"\\\">\", _this2.localize(o[1]), '</option>'].join('');\n      })).concat('</select>').join('');\n    }\n    /**\n     * Create foreground color element for the component\n     *\n     * @return {string}\n     *         An HTML string.\n     *\n     * @private\n     */\n    ;\n\n    _proto.createElFgColor_ = function createElFgColor_() {\n      var legendId = \"captions-text-legend-\" + this.id_;\n      return ['<fieldset class=\"vjs-fg-color vjs-track-setting\">', \"<legend id=\\\"\" + legendId + \"\\\">\", this.localize('Text'), '</legend>', this.createElSelect_('color', legendId), '<span class=\"vjs-text-opacity vjs-opacity\">', this.createElSelect_('textOpacity', legendId), '</span>', '</fieldset>'].join('');\n    }\n    /**\n     * Create background color element for the component\n     *\n     * @return {string}\n     *         An HTML string.\n     *\n     * @private\n     */\n    ;\n\n    _proto.createElBgColor_ = function createElBgColor_() {\n      var legendId = \"captions-background-\" + this.id_;\n      return ['<fieldset class=\"vjs-bg-color vjs-track-setting\">', \"<legend id=\\\"\" + legendId + \"\\\">\", this.localize('Background'), '</legend>', this.createElSelect_('backgroundColor', legendId), '<span class=\"vjs-bg-opacity vjs-opacity\">', this.createElSelect_('backgroundOpacity', legendId), '</span>', '</fieldset>'].join('');\n    }\n    /**\n     * Create window color element for the component\n     *\n     * @return {string}\n     *         An HTML string.\n     *\n     * @private\n     */\n    ;\n\n    _proto.createElWinColor_ = function createElWinColor_() {\n      var legendId = \"captions-window-\" + this.id_;\n      return ['<fieldset class=\"vjs-window-color vjs-track-setting\">', \"<legend id=\\\"\" + legendId + \"\\\">\", this.localize('Window'), '</legend>', this.createElSelect_('windowColor', legendId), '<span class=\"vjs-window-opacity vjs-opacity\">', this.createElSelect_('windowOpacity', legendId), '</span>', '</fieldset>'].join('');\n    }\n    /**\n     * Create color elements for the component\n     *\n     * @return {Element}\n     *         The element that was created\n     *\n     * @private\n     */\n    ;\n\n    _proto.createElColors_ = function createElColors_() {\n      return createEl('div', {\n        className: 'vjs-track-settings-colors',\n        innerHTML: [this.createElFgColor_(), this.createElBgColor_(), this.createElWinColor_()].join('')\n      });\n    }\n    /**\n     * Create font elements for the component\n     *\n     * @return {Element}\n     *         The element that was created.\n     *\n     * @private\n     */\n    ;\n\n    _proto.createElFont_ = function createElFont_() {\n      return createEl('div', {\n        className: 'vjs-track-settings-font',\n        innerHTML: ['<fieldset class=\"vjs-font-percent vjs-track-setting\">', this.createElSelect_('fontPercent', '', 'legend'), '</fieldset>', '<fieldset class=\"vjs-edge-style vjs-track-setting\">', this.createElSelect_('edgeStyle', '', 'legend'), '</fieldset>', '<fieldset class=\"vjs-font-family vjs-track-setting\">', this.createElSelect_('fontFamily', '', 'legend'), '</fieldset>'].join('')\n      });\n    }\n    /**\n     * Create controls for the component\n     *\n     * @return {Element}\n     *         The element that was created.\n     *\n     * @private\n     */\n    ;\n\n    _proto.createElControls_ = function createElControls_() {\n      var defaultsDescription = this.localize('restore all settings to the default values');\n      return createEl('div', {\n        className: 'vjs-track-settings-controls',\n        innerHTML: [\"<button type=\\\"button\\\" class=\\\"vjs-default-button\\\" title=\\\"\" + defaultsDescription + \"\\\">\", this.localize('Reset'), \"<span class=\\\"vjs-control-text\\\"> \" + defaultsDescription + \"</span>\", '</button>', \"<button type=\\\"button\\\" class=\\\"vjs-done-button\\\">\" + this.localize('Done') + \"</button>\"].join('')\n      });\n    };\n\n    _proto.content = function content() {\n      return [this.createElColors_(), this.createElFont_(), this.createElControls_()];\n    };\n\n    _proto.label = function label() {\n      return this.localize('Caption Settings Dialog');\n    };\n\n    _proto.description = function description() {\n      return this.localize('Beginning of dialog window. Escape will cancel and close the window.');\n    };\n\n    _proto.buildCSSClass = function buildCSSClass() {\n      return _ModalDialog.prototype.buildCSSClass.call(this) + ' vjs-text-track-settings';\n    }\n    /**\n     * Gets an object of text track settings (or null).\n     *\n     * @return {Object}\n     *         An object with config values parsed from the DOM or localStorage.\n     */\n    ;\n\n    _proto.getValues = function getValues() {\n      var _this3 = this;\n\n      return reduce(selectConfigs, function (accum, config, key) {\n        var value = getSelectedOptionValue(_this3.$(config.selector), config.parser);\n\n        if (value !== undefined) {\n          accum[key] = value;\n        }\n\n        return accum;\n      }, {});\n    }\n    /**\n     * Sets text track settings from an object of values.\n     *\n     * @param {Object} values\n     *        An object with config values parsed from the DOM or localStorage.\n     */\n    ;\n\n    _proto.setValues = function setValues(values) {\n      var _this4 = this;\n\n      each(selectConfigs, function (config, key) {\n        setSelectedOption(_this4.$(config.selector), values[key], config.parser);\n      });\n    }\n    /**\n     * Sets all `<select>` elements to their default values.\n     */\n    ;\n\n    _proto.setDefaults = function setDefaults() {\n      var _this5 = this;\n\n      each(selectConfigs, function (config) {\n        var index = config.hasOwnProperty('default') ? config.default : 0;\n        _this5.$(config.selector).selectedIndex = index;\n      });\n    }\n    /**\n     * Restore texttrack settings from localStorage\n     */\n    ;\n\n    _proto.restoreSettings = function restoreSettings() {\n      var values;\n\n      try {\n        values = JSON.parse(window$1.localStorage.getItem(LOCAL_STORAGE_KEY));\n      } catch (err) {\n        log.warn(err);\n      }\n\n      if (values) {\n        this.setValues(values);\n      }\n    }\n    /**\n     * Save text track settings to localStorage\n     */\n    ;\n\n    _proto.saveSettings = function saveSettings() {\n      if (!this.options_.persistTextTrackSettings) {\n        return;\n      }\n\n      var values = this.getValues();\n\n      try {\n        if (Object.keys(values).length) {\n          window$1.localStorage.setItem(LOCAL_STORAGE_KEY, JSON.stringify(values));\n        } else {\n          window$1.localStorage.removeItem(LOCAL_STORAGE_KEY);\n        }\n      } catch (err) {\n        log.warn(err);\n      }\n    }\n    /**\n     * Update display of text track settings\n     */\n    ;\n\n    _proto.updateDisplay = function updateDisplay() {\n      var ttDisplay = this.player_.getChild('textTrackDisplay');\n\n      if (ttDisplay) {\n        ttDisplay.updateDisplay();\n      }\n    }\n    /**\n     * conditionally blur the element and refocus the captions button\n     *\n     * @private\n     */\n    ;\n\n    _proto.conditionalBlur_ = function conditionalBlur_() {\n      this.previouslyActiveEl_ = null;\n      this.off(document, 'keydown', this.handleKeyDown);\n      var cb = this.player_.controlBar;\n      var subsCapsBtn = cb && cb.subsCapsButton;\n      var ccBtn = cb && cb.captionsButton;\n\n      if (subsCapsBtn) {\n        subsCapsBtn.focus();\n      } else if (ccBtn) {\n        ccBtn.focus();\n      }\n    };\n\n    return TextTrackSettings;\n  }(ModalDialog);\n\n  Component.registerComponent('TextTrackSettings', TextTrackSettings);\n\n  /**\n   * A Resize Manager. It is in charge of triggering `playerresize` on the player in the right conditions.\n   *\n   * It'll either create an iframe and use a debounced resize handler on it or use the new {@link https://wicg.github.io/ResizeObserver/|ResizeObserver}.\n   *\n   * If the ResizeObserver is available natively, it will be used. A polyfill can be passed in as an option.\n   * If a `playerresize` event is not needed, the ResizeManager component can be removed from the player, see the example below.\n   * @example <caption>How to disable the resize manager</caption>\n   * const player = videojs('#vid', {\n   *   resizeManager: false\n   * });\n   *\n   * @see {@link https://wicg.github.io/ResizeObserver/|ResizeObserver specification}\n   *\n   * @extends Component\n   */\n\n  var ResizeManager =\n  /*#__PURE__*/\n  function (_Component) {\n    _inheritsLoose(ResizeManager, _Component);\n\n    /**\n     * Create the ResizeManager.\n     *\n     * @param {Object} player\n     *        The `Player` that this class should be attached to.\n     *\n     * @param {Object} [options]\n     *        The key/value store of ResizeManager options.\n     *\n     * @param {Object} [options.ResizeObserver]\n     *        A polyfill for ResizeObserver can be passed in here.\n     *        If this is set to null it will ignore the native ResizeObserver and fall back to the iframe fallback.\n     */\n    function ResizeManager(player, options) {\n      var _this;\n\n      var RESIZE_OBSERVER_AVAILABLE = options.ResizeObserver || window$1.ResizeObserver; // if `null` was passed, we want to disable the ResizeObserver\n\n      if (options.ResizeObserver === null) {\n        RESIZE_OBSERVER_AVAILABLE = false;\n      } // Only create an element when ResizeObserver isn't available\n\n\n      var options_ = mergeOptions({\n        createEl: !RESIZE_OBSERVER_AVAILABLE,\n        reportTouchActivity: false\n      }, options);\n      _this = _Component.call(this, player, options_) || this;\n      _this.ResizeObserver = options.ResizeObserver || window$1.ResizeObserver;\n      _this.loadListener_ = null;\n      _this.resizeObserver_ = null;\n      _this.debouncedHandler_ = debounce(function () {\n        _this.resizeHandler();\n      }, 100, false, _assertThisInitialized(_assertThisInitialized(_this)));\n\n      if (RESIZE_OBSERVER_AVAILABLE) {\n        _this.resizeObserver_ = new _this.ResizeObserver(_this.debouncedHandler_);\n\n        _this.resizeObserver_.observe(player.el());\n      } else {\n        _this.loadListener_ = function () {\n          if (!_this.el_ || !_this.el_.contentWindow) {\n            return;\n          }\n\n          on(_this.el_.contentWindow, 'resize', _this.debouncedHandler_);\n        };\n\n        _this.one('load', _this.loadListener_);\n      }\n\n      return _this;\n    }\n\n    var _proto = ResizeManager.prototype;\n\n    _proto.createEl = function createEl() {\n      return _Component.prototype.createEl.call(this, 'iframe', {\n        className: 'vjs-resize-manager',\n        tabIndex: -1\n      }, {\n        'aria-hidden': 'true'\n      });\n    }\n    /**\n     * Called when a resize is triggered on the iframe or a resize is observed via the ResizeObserver\n     *\n     * @fires Player#playerresize\n     */\n    ;\n\n    _proto.resizeHandler = function resizeHandler() {\n      /**\n       * Called when the player size has changed\n       *\n       * @event Player#playerresize\n       * @type {EventTarget~Event}\n       */\n      // make sure player is still around to trigger\n      // prevents this from causing an error after dispose\n      if (!this.player_ || !this.player_.trigger) {\n        return;\n      }\n\n      this.player_.trigger('playerresize');\n    };\n\n    _proto.dispose = function dispose() {\n      if (this.debouncedHandler_) {\n        this.debouncedHandler_.cancel();\n      }\n\n      if (this.resizeObserver_) {\n        if (this.player_.el()) {\n          this.resizeObserver_.unobserve(this.player_.el());\n        }\n\n        this.resizeObserver_.disconnect();\n      }\n\n      if (this.el_ && this.el_.contentWindow) {\n        off(this.el_.contentWindow, 'resize', this.debouncedHandler_);\n      }\n\n      if (this.loadListener_) {\n        this.off('load', this.loadListener_);\n      }\n\n      this.ResizeObserver = null;\n      this.resizeObserver = null;\n      this.debouncedHandler_ = null;\n      this.loadListener_ = null;\n    };\n\n    return ResizeManager;\n  }(Component);\n\n  Component.registerComponent('ResizeManager', ResizeManager);\n\n  /* track when we are at the live edge, and other helpers for live playback */\n\n  var LiveTracker =\n  /*#__PURE__*/\n  function (_Component) {\n    _inheritsLoose(LiveTracker, _Component);\n\n    function LiveTracker(player, options) {\n      var _this;\n\n      // LiveTracker does not need an element\n      var options_ = mergeOptions({\n        createEl: false\n      }, options);\n      _this = _Component.call(this, player, options_) || this;\n\n      _this.reset_();\n\n      _this.on(_this.player_, 'durationchange', _this.handleDurationchange);\n\n      return _this;\n    }\n\n    var _proto = LiveTracker.prototype;\n\n    _proto.isBehind_ = function isBehind_() {\n      // don't report that we are behind until a timeupdate has been seen\n      if (!this.timeupdateSeen_) {\n        return false;\n      }\n\n      var liveCurrentTime = this.liveCurrentTime();\n      var currentTime = this.player_.currentTime();\n      var seekableIncrement = this.seekableIncrement_; // the live edge window is the amount of seconds away from live\n      // that a player can be, but still be considered live.\n      // we add 0.07 because the live tracking happens every 30ms\n      // and we want some wiggle room for short segment live playback\n\n      var liveEdgeWindow = seekableIncrement * 2 + 0.07; // on Android liveCurrentTime can bee Infinity, because seekableEnd\n      // can be Infinity, so we handle that case.\n\n      return liveCurrentTime !== Infinity && liveCurrentTime - liveEdgeWindow >= currentTime;\n    } // all the functionality for tracking when seek end changes\n    // and for tracking how far past seek end we should be\n    ;\n\n    _proto.trackLive_ = function trackLive_() {\n      this.pastSeekEnd_ = this.pastSeekEnd_;\n      var seekable = this.player_.seekable(); // skip undefined seekable\n\n      if (!seekable || !seekable.length) {\n        return;\n      }\n\n      var newSeekEnd = this.seekableEnd(); // we can only tell if we are behind live, when seekable changes\n      // once we detect that seekable has changed we check the new seek\n      // end against current time, with a fudge value of half a second.\n\n      if (newSeekEnd !== this.lastSeekEnd_) {\n        if (this.lastSeekEnd_) {\n          this.seekableIncrement_ = Math.abs(newSeekEnd - this.lastSeekEnd_);\n        }\n\n        this.pastSeekEnd_ = 0;\n        this.lastSeekEnd_ = newSeekEnd;\n        this.trigger('seekableendchange');\n      }\n\n      this.pastSeekEnd_ = this.pastSeekEnd() + 0.03;\n\n      if (this.isBehind_() !== this.behindLiveEdge()) {\n        this.behindLiveEdge_ = this.isBehind_();\n        this.trigger('liveedgechange');\n      }\n    }\n    /**\n     * handle a durationchange event on the player\n     * and start/stop tracking accordingly.\n     */\n    ;\n\n    _proto.handleDurationchange = function handleDurationchange() {\n      if (this.player_.duration() === Infinity) {\n        this.startTracking();\n      } else {\n        this.stopTracking();\n      }\n    }\n    /**\n     * start tracking live playback\n     */\n    ;\n\n    _proto.startTracking = function startTracking() {\n      var _this2 = this;\n\n      if (this.isTracking()) {\n        return;\n      }\n\n      this.trackingInterval_ = this.setInterval(this.trackLive_, 30);\n      this.trackLive_();\n      this.on(this.player_, 'play', this.trackLive_);\n      this.on(this.player_, 'pause', this.trackLive_);\n      this.one(this.player_, 'play', this.handlePlay); // this is to prevent showing that we are not live\n      // before a video starts to play\n\n      if (!this.timeupdateSeen_) {\n        this.handleTimeupdate = function () {\n          _this2.timeupdateSeen_ = true;\n          _this2.handleTimeupdate = null;\n        };\n\n        this.one(this.player_, 'timeupdate', this.handleTimeupdate);\n      }\n    };\n\n    _proto.handlePlay = function handlePlay() {\n      this.one(this.player_, 'timeupdate', this.seekToLiveEdge);\n    }\n    /**\n     * Stop tracking, and set all internal variables to\n     * their initial value.\n     */\n    ;\n\n    _proto.reset_ = function reset_() {\n      this.pastSeekEnd_ = 0;\n      this.lastSeekEnd_ = null;\n      this.behindLiveEdge_ = null;\n      this.timeupdateSeen_ = false;\n      this.clearInterval(this.trackingInterval_);\n      this.trackingInterval_ = null;\n      this.seekableIncrement_ = 12;\n      this.off(this.player_, 'play', this.trackLive_);\n      this.off(this.player_, 'pause', this.trackLive_);\n      this.off(this.player_, 'play', this.handlePlay);\n      this.off(this.player_, 'timeupdate', this.seekToLiveEdge);\n\n      if (this.handleTimeupdate) {\n        this.off(this.player_, 'timeupdate', this.handleTimeupdate);\n        this.handleTimeupdate = null;\n      }\n    }\n    /**\n     * stop tracking live playback\n     */\n    ;\n\n    _proto.stopTracking = function stopTracking() {\n      if (!this.isTracking()) {\n        return;\n      }\n\n      this.reset_();\n    }\n    /**\n     * A helper to get the player seekable end\n     * so that we don't have to null check everywhere\n     */\n    ;\n\n    _proto.seekableEnd = function seekableEnd() {\n      var seekable = this.player_.seekable();\n      var seekableEnds = [];\n      var i = seekable ? seekable.length : 0;\n\n      while (i--) {\n        seekableEnds.push(seekable.end(i));\n      } // grab the furthest seekable end after sorting, or if there are none\n      // default to Infinity\n\n\n      return seekableEnds.length ? seekableEnds.sort()[seekableEnds.length - 1] : Infinity;\n    }\n    /**\n     * A helper to get the player seekable start\n     * so that we don't have to null check everywhere\n     */\n    ;\n\n    _proto.seekableStart = function seekableStart() {\n      var seekable = this.player_.seekable();\n      var seekableStarts = [];\n      var i = seekable ? seekable.length : 0;\n\n      while (i--) {\n        seekableStarts.push(seekable.start(i));\n      } // grab the first seekable start after sorting, or if there are none\n      // default to 0\n\n\n      return seekableStarts.length ? seekableStarts.sort()[0] : 0;\n    }\n    /**\n     * Get the live time window\n     */\n    ;\n\n    _proto.liveWindow = function liveWindow() {\n      var liveCurrentTime = this.liveCurrentTime();\n\n      if (liveCurrentTime === Infinity) {\n        return Infinity;\n      }\n\n      return liveCurrentTime - this.seekableStart();\n    }\n    /**\n     * Determines if the player is live, only checks if this component\n     * is tracking live playback or not\n     */\n    ;\n\n    _proto.isLive = function isLive() {\n      return this.isTracking();\n    }\n    /**\n     * Determines if currentTime is at the live edge and won't fall behind\n     * on each seekableendchange\n     */\n    ;\n\n    _proto.atLiveEdge = function atLiveEdge() {\n      return !this.behindLiveEdge();\n    }\n    /**\n     * get what we expect the live current time to be\n     */\n    ;\n\n    _proto.liveCurrentTime = function liveCurrentTime() {\n      return this.pastSeekEnd() + this.seekableEnd();\n    }\n    /**\n     * Returns how far past seek end we expect current time to be\n     */\n    ;\n\n    _proto.pastSeekEnd = function pastSeekEnd() {\n      return this.pastSeekEnd_;\n    }\n    /**\n     * If we are currently behind the live edge, aka currentTime will be\n     * behind on a seekableendchange\n     */\n    ;\n\n    _proto.behindLiveEdge = function behindLiveEdge() {\n      return this.behindLiveEdge_;\n    };\n\n    _proto.isTracking = function isTracking() {\n      return typeof this.trackingInterval_ === 'number';\n    }\n    /**\n     * Seek to the live edge if we are behind the live edge\n     */\n    ;\n\n    _proto.seekToLiveEdge = function seekToLiveEdge() {\n      if (this.atLiveEdge()) {\n        return;\n      }\n\n      this.player_.currentTime(this.liveCurrentTime());\n\n      if (this.player_.paused()) {\n        this.player_.play();\n      }\n    };\n\n    _proto.dispose = function dispose() {\n      this.stopTracking();\n\n      _Component.prototype.dispose.call(this);\n    };\n\n    return LiveTracker;\n  }(Component);\n\n  Component.registerComponent('LiveTracker', LiveTracker);\n\n  /**\n   * This function is used to fire a sourceset when there is something\n   * similar to `mediaEl.load()` being called. It will try to find the source via\n   * the `src` attribute and then the `<source>` elements. It will then fire `sourceset`\n   * with the source that was found or empty string if we cannot know. If it cannot\n   * find a source then `sourceset` will not be fired.\n   *\n   * @param {Html5} tech\n   *        The tech object that sourceset was setup on\n   *\n   * @return {boolean}\n   *         returns false if the sourceset was not fired and true otherwise.\n   */\n\n  var sourcesetLoad = function sourcesetLoad(tech) {\n    var el = tech.el(); // if `el.src` is set, that source will be loaded.\n\n    if (el.hasAttribute('src')) {\n      tech.triggerSourceset(el.src);\n      return true;\n    }\n    /**\n     * Since there isn't a src property on the media element, source elements will be used for\n     * implementing the source selection algorithm. This happens asynchronously and\n     * for most cases were there is more than one source we cannot tell what source will\n     * be loaded, without re-implementing the source selection algorithm. At this time we are not\n     * going to do that. There are three special cases that we do handle here though:\n     *\n     * 1. If there are no sources, do not fire `sourceset`.\n     * 2. If there is only one `<source>` with a `src` property/attribute that is our `src`\n     * 3. If there is more than one `<source>` but all of them have the same `src` url.\n     *    That will be our src.\n     */\n\n\n    var sources = tech.$$('source');\n    var srcUrls = [];\n    var src = ''; // if there are no sources, do not fire sourceset\n\n    if (!sources.length) {\n      return false;\n    } // only count valid/non-duplicate source elements\n\n\n    for (var i = 0; i < sources.length; i++) {\n      var url = sources[i].src;\n\n      if (url && srcUrls.indexOf(url) === -1) {\n        srcUrls.push(url);\n      }\n    } // there were no valid sources\n\n\n    if (!srcUrls.length) {\n      return false;\n    } // there is only one valid source element url\n    // use that\n\n\n    if (srcUrls.length === 1) {\n      src = srcUrls[0];\n    }\n\n    tech.triggerSourceset(src);\n    return true;\n  };\n  /**\n   * our implementation of an `innerHTML` descriptor for browsers\n   * that do not have one.\n   */\n\n\n  var innerHTMLDescriptorPolyfill = Object.defineProperty({}, 'innerHTML', {\n    get: function get() {\n      return this.cloneNode(true).innerHTML;\n    },\n    set: function set(v) {\n      // make a dummy node to use innerHTML on\n      var dummy = document.createElement(this.nodeName.toLowerCase()); // set innerHTML to the value provided\n\n      dummy.innerHTML = v; // make a document fragment to hold the nodes from dummy\n\n      var docFrag = document.createDocumentFragment(); // copy all of the nodes created by the innerHTML on dummy\n      // to the document fragment\n\n      while (dummy.childNodes.length) {\n        docFrag.appendChild(dummy.childNodes[0]);\n      } // remove content\n\n\n      this.innerText = ''; // now we add all of that html in one by appending the\n      // document fragment. This is how innerHTML does it.\n\n      window$1.Element.prototype.appendChild.call(this, docFrag); // then return the result that innerHTML's setter would\n\n      return this.innerHTML;\n    }\n  });\n  /**\n   * Get a property descriptor given a list of priorities and the\n   * property to get.\n   */\n\n  var getDescriptor = function getDescriptor(priority, prop) {\n    var descriptor = {};\n\n    for (var i = 0; i < priority.length; i++) {\n      descriptor = Object.getOwnPropertyDescriptor(priority[i], prop);\n\n      if (descriptor && descriptor.set && descriptor.get) {\n        break;\n      }\n    }\n\n    descriptor.enumerable = true;\n    descriptor.configurable = true;\n    return descriptor;\n  };\n\n  var getInnerHTMLDescriptor = function getInnerHTMLDescriptor(tech) {\n    return getDescriptor([tech.el(), window$1.HTMLMediaElement.prototype, window$1.Element.prototype, innerHTMLDescriptorPolyfill], 'innerHTML');\n  };\n  /**\n   * Patches browser internal functions so that we can tell synchronously\n   * if a `<source>` was appended to the media element. For some reason this\n   * causes a `sourceset` if the the media element is ready and has no source.\n   * This happens when:\n   * - The page has just loaded and the media element does not have a source.\n   * - The media element was emptied of all sources, then `load()` was called.\n   *\n   * It does this by patching the following functions/properties when they are supported:\n   *\n   * - `append()` - can be used to add a `<source>` element to the media element\n   * - `appendChild()` - can be used to add a `<source>` element to the media element\n   * - `insertAdjacentHTML()` -  can be used to add a `<source>` element to the media element\n   * - `innerHTML` -  can be used to add a `<source>` element to the media element\n   *\n   * @param {Html5} tech\n   *        The tech object that sourceset is being setup on.\n   */\n\n\n  var firstSourceWatch = function firstSourceWatch(tech) {\n    var el = tech.el(); // make sure firstSourceWatch isn't setup twice.\n\n    if (el.resetSourceWatch_) {\n      return;\n    }\n\n    var old = {};\n    var innerDescriptor = getInnerHTMLDescriptor(tech);\n\n    var appendWrapper = function appendWrapper(appendFn) {\n      return function () {\n        for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {\n          args[_key] = arguments[_key];\n        }\n\n        var retval = appendFn.apply(el, args);\n        sourcesetLoad(tech);\n        return retval;\n      };\n    };\n\n    ['append', 'appendChild', 'insertAdjacentHTML'].forEach(function (k) {\n      if (!el[k]) {\n        return;\n      } // store the old function\n\n\n      old[k] = el[k]; // call the old function with a sourceset if a source\n      // was loaded\n\n      el[k] = appendWrapper(old[k]);\n    });\n    Object.defineProperty(el, 'innerHTML', mergeOptions(innerDescriptor, {\n      set: appendWrapper(innerDescriptor.set)\n    }));\n\n    el.resetSourceWatch_ = function () {\n      el.resetSourceWatch_ = null;\n      Object.keys(old).forEach(function (k) {\n        el[k] = old[k];\n      });\n      Object.defineProperty(el, 'innerHTML', innerDescriptor);\n    }; // on the first sourceset, we need to revert our changes\n\n\n    tech.one('sourceset', el.resetSourceWatch_);\n  };\n  /**\n   * our implementation of a `src` descriptor for browsers\n   * that do not have one.\n   */\n\n\n  var srcDescriptorPolyfill = Object.defineProperty({}, 'src', {\n    get: function get() {\n      if (this.hasAttribute('src')) {\n        return getAbsoluteURL(window$1.Element.prototype.getAttribute.call(this, 'src'));\n      }\n\n      return '';\n    },\n    set: function set(v) {\n      window$1.Element.prototype.setAttribute.call(this, 'src', v);\n      return v;\n    }\n  });\n\n  var getSrcDescriptor = function getSrcDescriptor(tech) {\n    return getDescriptor([tech.el(), window$1.HTMLMediaElement.prototype, srcDescriptorPolyfill], 'src');\n  };\n  /**\n   * setup `sourceset` handling on the `Html5` tech. This function\n   * patches the following element properties/functions:\n   *\n   * - `src` - to determine when `src` is set\n   * - `setAttribute()` - to determine when `src` is set\n   * - `load()` - this re-triggers the source selection algorithm, and can\n   *              cause a sourceset.\n   *\n   * If there is no source when we are adding `sourceset` support or during a `load()`\n   * we also patch the functions listed in `firstSourceWatch`.\n   *\n   * @param {Html5} tech\n   *        The tech to patch\n   */\n\n\n  var setupSourceset = function setupSourceset(tech) {\n    if (!tech.featuresSourceset) {\n      return;\n    }\n\n    var el = tech.el(); // make sure sourceset isn't setup twice.\n\n    if (el.resetSourceset_) {\n      return;\n    }\n\n    var srcDescriptor = getSrcDescriptor(tech);\n    var oldSetAttribute = el.setAttribute;\n    var oldLoad = el.load;\n    Object.defineProperty(el, 'src', mergeOptions(srcDescriptor, {\n      set: function set(v) {\n        var retval = srcDescriptor.set.call(el, v); // we use the getter here to get the actual value set on src\n\n        tech.triggerSourceset(el.src);\n        return retval;\n      }\n    }));\n\n    el.setAttribute = function (n, v) {\n      var retval = oldSetAttribute.call(el, n, v);\n\n      if (/src/i.test(n)) {\n        tech.triggerSourceset(el.src);\n      }\n\n      return retval;\n    };\n\n    el.load = function () {\n      var retval = oldLoad.call(el); // if load was called, but there was no source to fire\n      // sourceset on. We have to watch for a source append\n      // as that can trigger a `sourceset` when the media element\n      // has no source\n\n      if (!sourcesetLoad(tech)) {\n        tech.triggerSourceset('');\n        firstSourceWatch(tech);\n      }\n\n      return retval;\n    };\n\n    if (el.currentSrc) {\n      tech.triggerSourceset(el.currentSrc);\n    } else if (!sourcesetLoad(tech)) {\n      firstSourceWatch(tech);\n    }\n\n    el.resetSourceset_ = function () {\n      el.resetSourceset_ = null;\n      el.load = oldLoad;\n      el.setAttribute = oldSetAttribute;\n      Object.defineProperty(el, 'src', srcDescriptor);\n\n      if (el.resetSourceWatch_) {\n        el.resetSourceWatch_();\n      }\n    };\n  };\n\n  function _templateObject$1() {\n    var data = _taggedTemplateLiteralLoose([\"Text Tracks are being loaded from another origin but the crossorigin attribute isn't used.\\n            This may prevent text tracks from loading.\"]);\n\n    _templateObject$1 = function _templateObject() {\n      return data;\n    };\n\n    return data;\n  }\n  /**\n   * HTML5 Media Controller - Wrapper for HTML5 Media API\n   *\n   * @mixes Tech~SourceHandlerAdditions\n   * @extends Tech\n   */\n\n  var Html5 =\n  /*#__PURE__*/\n  function (_Tech) {\n    _inheritsLoose(Html5, _Tech);\n\n    /**\n    * Create an instance of this Tech.\n    *\n    * @param {Object} [options]\n    *        The key/value store of player options.\n    *\n    * @param {Component~ReadyCallback} ready\n    *        Callback function to call when the `HTML5` Tech is ready.\n    */\n    function Html5(options, ready) {\n      var _this;\n\n      _this = _Tech.call(this, options, ready) || this;\n      var source = options.source;\n      var crossoriginTracks = false; // Set the source if one is provided\n      // 1) Check if the source is new (if not, we want to keep the original so playback isn't interrupted)\n      // 2) Check to see if the network state of the tag was failed at init, and if so, reset the source\n      // anyway so the error gets fired.\n\n      if (source && (_this.el_.currentSrc !== source.src || options.tag && options.tag.initNetworkState_ === 3)) {\n        _this.setSource(source);\n      } else {\n        _this.handleLateInit_(_this.el_);\n      } // setup sourceset after late sourceset/init\n\n\n      if (options.enableSourceset) {\n        _this.setupSourcesetHandling_();\n      }\n\n      if (_this.el_.hasChildNodes()) {\n        var nodes = _this.el_.childNodes;\n        var nodesLength = nodes.length;\n        var removeNodes = [];\n\n        while (nodesLength--) {\n          var node = nodes[nodesLength];\n          var nodeName = node.nodeName.toLowerCase();\n\n          if (nodeName === 'track') {\n            if (!_this.featuresNativeTextTracks) {\n              // Empty video tag tracks so the built-in player doesn't use them also.\n              // This may not be fast enough to stop HTML5 browsers from reading the tags\n              // so we'll need to turn off any default tracks if we're manually doing\n              // captions and subtitles. videoElement.textTracks\n              removeNodes.push(node);\n            } else {\n              // store HTMLTrackElement and TextTrack to remote list\n              _this.remoteTextTrackEls().addTrackElement_(node);\n\n              _this.remoteTextTracks().addTrack(node.track);\n\n              _this.textTracks().addTrack(node.track);\n\n              if (!crossoriginTracks && !_this.el_.hasAttribute('crossorigin') && isCrossOrigin(node.src)) {\n                crossoriginTracks = true;\n              }\n            }\n          }\n        }\n\n        for (var i = 0; i < removeNodes.length; i++) {\n          _this.el_.removeChild(removeNodes[i]);\n        }\n      }\n\n      _this.proxyNativeTracks_();\n\n      if (_this.featuresNativeTextTracks && crossoriginTracks) {\n        log.warn(tsml(_templateObject$1()));\n      } // prevent iOS Safari from disabling metadata text tracks during native playback\n\n\n      _this.restoreMetadataTracksInIOSNativePlayer_(); // Determine if native controls should be used\n      // Our goal should be to get the custom controls on mobile solid everywhere\n      // so we can remove this all together. Right now this will block custom\n      // controls on touch enabled laptops like the Chrome Pixel\n\n\n      if ((TOUCH_ENABLED || IS_IPHONE || IS_NATIVE_ANDROID) && options.nativeControlsForTouch === true) {\n        _this.setControls(true);\n      } // on iOS, we want to proxy `webkitbeginfullscreen` and `webkitendfullscreen`\n      // into a `fullscreenchange` event\n\n\n      _this.proxyWebkitFullscreen_();\n\n      _this.triggerReady();\n\n      return _this;\n    }\n    /**\n     * Dispose of `HTML5` media element and remove all tracks.\n     */\n\n\n    var _proto = Html5.prototype;\n\n    _proto.dispose = function dispose() {\n      if (this.el_ && this.el_.resetSourceset_) {\n        this.el_.resetSourceset_();\n      }\n\n      Html5.disposeMediaElement(this.el_);\n      this.options_ = null; // tech will handle clearing of the emulated track list\n\n      _Tech.prototype.dispose.call(this);\n    }\n    /**\n     * Modify the media element so that we can detect when\n     * the source is changed. Fires `sourceset` just after the source has changed\n     */\n    ;\n\n    _proto.setupSourcesetHandling_ = function setupSourcesetHandling_() {\n      setupSourceset(this);\n    }\n    /**\n     * When a captions track is enabled in the iOS Safari native player, all other\n     * tracks are disabled (including metadata tracks), which nulls all of their\n     * associated cue points. This will restore metadata tracks to their pre-fullscreen\n     * state in those cases so that cue points are not needlessly lost.\n     *\n     * @private\n     */\n    ;\n\n    _proto.restoreMetadataTracksInIOSNativePlayer_ = function restoreMetadataTracksInIOSNativePlayer_() {\n      var textTracks = this.textTracks();\n      var metadataTracksPreFullscreenState; // captures a snapshot of every metadata track's current state\n\n      var takeMetadataTrackSnapshot = function takeMetadataTrackSnapshot() {\n        metadataTracksPreFullscreenState = [];\n\n        for (var i = 0; i < textTracks.length; i++) {\n          var track = textTracks[i];\n\n          if (track.kind === 'metadata') {\n            metadataTracksPreFullscreenState.push({\n              track: track,\n              storedMode: track.mode\n            });\n          }\n        }\n      }; // snapshot each metadata track's initial state, and update the snapshot\n      // each time there is a track 'change' event\n\n\n      takeMetadataTrackSnapshot();\n      textTracks.addEventListener('change', takeMetadataTrackSnapshot);\n      this.on('dispose', function () {\n        return textTracks.removeEventListener('change', takeMetadataTrackSnapshot);\n      });\n\n      var restoreTrackMode = function restoreTrackMode() {\n        for (var i = 0; i < metadataTracksPreFullscreenState.length; i++) {\n          var storedTrack = metadataTracksPreFullscreenState[i];\n\n          if (storedTrack.track.mode === 'disabled' && storedTrack.track.mode !== storedTrack.storedMode) {\n            storedTrack.track.mode = storedTrack.storedMode;\n          }\n        } // we only want this handler to be executed on the first 'change' event\n\n\n        textTracks.removeEventListener('change', restoreTrackMode);\n      }; // when we enter fullscreen playback, stop updating the snapshot and\n      // restore all track modes to their pre-fullscreen state\n\n\n      this.on('webkitbeginfullscreen', function () {\n        textTracks.removeEventListener('change', takeMetadataTrackSnapshot); // remove the listener before adding it just in case it wasn't previously removed\n\n        textTracks.removeEventListener('change', restoreTrackMode);\n        textTracks.addEventListener('change', restoreTrackMode);\n      }); // start updating the snapshot again after leaving fullscreen\n\n      this.on('webkitendfullscreen', function () {\n        // remove the listener before adding it just in case it wasn't previously removed\n        textTracks.removeEventListener('change', takeMetadataTrackSnapshot);\n        textTracks.addEventListener('change', takeMetadataTrackSnapshot); // remove the restoreTrackMode handler in case it wasn't triggered during fullscreen playback\n\n        textTracks.removeEventListener('change', restoreTrackMode);\n      });\n    }\n    /**\n     * Attempt to force override of tracks for the given type\n     *\n     * @param {string} type - Track type to override, possible values include 'Audio',\n     * 'Video', and 'Text'.\n     * @param {boolean} override - If set to true native audio/video will be overridden,\n     * otherwise native audio/video will potentially be used.\n     * @private\n     */\n    ;\n\n    _proto.overrideNative_ = function overrideNative_(type, override) {\n      var _this2 = this;\n\n      // If there is no behavioral change don't add/remove listeners\n      if (override !== this[\"featuresNative\" + type + \"Tracks\"]) {\n        return;\n      }\n\n      var lowerCaseType = type.toLowerCase();\n\n      if (this[lowerCaseType + \"TracksListeners_\"]) {\n        Object.keys(this[lowerCaseType + \"TracksListeners_\"]).forEach(function (eventName) {\n          var elTracks = _this2.el()[lowerCaseType + \"Tracks\"];\n\n          elTracks.removeEventListener(eventName, _this2[lowerCaseType + \"TracksListeners_\"][eventName]);\n        });\n      }\n\n      this[\"featuresNative\" + type + \"Tracks\"] = !override;\n      this[lowerCaseType + \"TracksListeners_\"] = null;\n      this.proxyNativeTracksForType_(lowerCaseType);\n    }\n    /**\n     * Attempt to force override of native audio tracks.\n     *\n     * @param {boolean} override - If set to true native audio will be overridden,\n     * otherwise native audio will potentially be used.\n     */\n    ;\n\n    _proto.overrideNativeAudioTracks = function overrideNativeAudioTracks(override) {\n      this.overrideNative_('Audio', override);\n    }\n    /**\n     * Attempt to force override of native video tracks.\n     *\n     * @param {boolean} override - If set to true native video will be overridden,\n     * otherwise native video will potentially be used.\n     */\n    ;\n\n    _proto.overrideNativeVideoTracks = function overrideNativeVideoTracks(override) {\n      this.overrideNative_('Video', override);\n    }\n    /**\n     * Proxy native track list events for the given type to our track\n     * lists if the browser we are playing in supports that type of track list.\n     *\n     * @param {string} name - Track type; values include 'audio', 'video', and 'text'\n     * @private\n     */\n    ;\n\n    _proto.proxyNativeTracksForType_ = function proxyNativeTracksForType_(name) {\n      var _this3 = this;\n\n      var props = NORMAL[name];\n      var elTracks = this.el()[props.getterName];\n      var techTracks = this[props.getterName]();\n\n      if (!this[\"featuresNative\" + props.capitalName + \"Tracks\"] || !elTracks || !elTracks.addEventListener) {\n        return;\n      }\n\n      var listeners = {\n        change: function change(e) {\n          techTracks.trigger({\n            type: 'change',\n            target: techTracks,\n            currentTarget: techTracks,\n            srcElement: techTracks\n          });\n        },\n        addtrack: function addtrack(e) {\n          techTracks.addTrack(e.track);\n        },\n        removetrack: function removetrack(e) {\n          techTracks.removeTrack(e.track);\n        }\n      };\n\n      var removeOldTracks = function removeOldTracks() {\n        var removeTracks = [];\n\n        for (var i = 0; i < techTracks.length; i++) {\n          var found = false;\n\n          for (var j = 0; j < elTracks.length; j++) {\n            if (elTracks[j] === techTracks[i]) {\n              found = true;\n              break;\n            }\n          }\n\n          if (!found) {\n            removeTracks.push(techTracks[i]);\n          }\n        }\n\n        while (removeTracks.length) {\n          techTracks.removeTrack(removeTracks.shift());\n        }\n      };\n\n      this[props.getterName + 'Listeners_'] = listeners;\n      Object.keys(listeners).forEach(function (eventName) {\n        var listener = listeners[eventName];\n        elTracks.addEventListener(eventName, listener);\n\n        _this3.on('dispose', function (e) {\n          return elTracks.removeEventListener(eventName, listener);\n        });\n      }); // Remove (native) tracks that are not used anymore\n\n      this.on('loadstart', removeOldTracks);\n      this.on('dispose', function (e) {\n        return _this3.off('loadstart', removeOldTracks);\n      });\n    }\n    /**\n     * Proxy all native track list events to our track lists if the browser we are playing\n     * in supports that type of track list.\n     *\n     * @private\n     */\n    ;\n\n    _proto.proxyNativeTracks_ = function proxyNativeTracks_() {\n      var _this4 = this;\n\n      NORMAL.names.forEach(function (name) {\n        _this4.proxyNativeTracksForType_(name);\n      });\n    }\n    /**\n     * Create the `Html5` Tech's DOM element.\n     *\n     * @return {Element}\n     *         The element that gets created.\n     */\n    ;\n\n    _proto.createEl = function createEl$$1() {\n      var el = this.options_.tag; // Check if this browser supports moving the element into the box.\n      // On the iPhone video will break if you move the element,\n      // So we have to create a brand new element.\n      // If we ingested the player div, we do not need to move the media element.\n\n      if (!el || !(this.options_.playerElIngest || this.movingMediaElementInDOM)) {\n        // If the original tag is still there, clone and remove it.\n        if (el) {\n          var clone = el.cloneNode(true);\n\n          if (el.parentNode) {\n            el.parentNode.insertBefore(clone, el);\n          }\n\n          Html5.disposeMediaElement(el);\n          el = clone;\n        } else {\n          el = document.createElement('video'); // determine if native controls should be used\n\n          var tagAttributes = this.options_.tag && getAttributes(this.options_.tag);\n          var attributes = mergeOptions({}, tagAttributes);\n\n          if (!TOUCH_ENABLED || this.options_.nativeControlsForTouch !== true) {\n            delete attributes.controls;\n          }\n\n          setAttributes(el, assign(attributes, {\n            id: this.options_.techId,\n            class: 'vjs-tech'\n          }));\n        }\n\n        el.playerId = this.options_.playerId;\n      }\n\n      if (typeof this.options_.preload !== 'undefined') {\n        setAttribute(el, 'preload', this.options_.preload);\n      } // Update specific tag settings, in case they were overridden\n      // `autoplay` has to be *last* so that `muted` and `playsinline` are present\n      // when iOS/Safari or other browsers attempt to autoplay.\n\n\n      var settingsAttrs = ['loop', 'muted', 'playsinline', 'autoplay'];\n\n      for (var i = 0; i < settingsAttrs.length; i++) {\n        var attr = settingsAttrs[i];\n        var value = this.options_[attr];\n\n        if (typeof value !== 'undefined') {\n          if (value) {\n            setAttribute(el, attr, attr);\n          } else {\n            removeAttribute(el, attr);\n          }\n\n          el[attr] = value;\n        }\n      }\n\n      return el;\n    }\n    /**\n     * This will be triggered if the loadstart event has already fired, before videojs was\n     * ready. Two known examples of when this can happen are:\n     * 1. If we're loading the playback object after it has started loading\n     * 2. The media is already playing the (often with autoplay on) then\n     *\n     * This function will fire another loadstart so that videojs can catchup.\n     *\n     * @fires Tech#loadstart\n     *\n     * @return {undefined}\n     *         returns nothing.\n     */\n    ;\n\n    _proto.handleLateInit_ = function handleLateInit_(el) {\n      if (el.networkState === 0 || el.networkState === 3) {\n        // The video element hasn't started loading the source yet\n        // or didn't find a source\n        return;\n      }\n\n      if (el.readyState === 0) {\n        // NetworkState is set synchronously BUT loadstart is fired at the\n        // end of the current stack, usually before setInterval(fn, 0).\n        // So at this point we know loadstart may have already fired or is\n        // about to fire, and either way the player hasn't seen it yet.\n        // We don't want to fire loadstart prematurely here and cause a\n        // double loadstart so we'll wait and see if it happens between now\n        // and the next loop, and fire it if not.\n        // HOWEVER, we also want to make sure it fires before loadedmetadata\n        // which could also happen between now and the next loop, so we'll\n        // watch for that also.\n        var loadstartFired = false;\n\n        var setLoadstartFired = function setLoadstartFired() {\n          loadstartFired = true;\n        };\n\n        this.on('loadstart', setLoadstartFired);\n\n        var triggerLoadstart = function triggerLoadstart() {\n          // We did miss the original loadstart. Make sure the player\n          // sees loadstart before loadedmetadata\n          if (!loadstartFired) {\n            this.trigger('loadstart');\n          }\n        };\n\n        this.on('loadedmetadata', triggerLoadstart);\n        this.ready(function () {\n          this.off('loadstart', setLoadstartFired);\n          this.off('loadedmetadata', triggerLoadstart);\n\n          if (!loadstartFired) {\n            // We did miss the original native loadstart. Fire it now.\n            this.trigger('loadstart');\n          }\n        });\n        return;\n      } // From here on we know that loadstart already fired and we missed it.\n      // The other readyState events aren't as much of a problem if we double\n      // them, so not going to go to as much trouble as loadstart to prevent\n      // that unless we find reason to.\n\n\n      var eventsToTrigger = ['loadstart']; // loadedmetadata: newly equal to HAVE_METADATA (1) or greater\n\n      eventsToTrigger.push('loadedmetadata'); // loadeddata: newly increased to HAVE_CURRENT_DATA (2) or greater\n\n      if (el.readyState >= 2) {\n        eventsToTrigger.push('loadeddata');\n      } // canplay: newly increased to HAVE_FUTURE_DATA (3) or greater\n\n\n      if (el.readyState >= 3) {\n        eventsToTrigger.push('canplay');\n      } // canplaythrough: newly equal to HAVE_ENOUGH_DATA (4)\n\n\n      if (el.readyState >= 4) {\n        eventsToTrigger.push('canplaythrough');\n      } // We still need to give the player time to add event listeners\n\n\n      this.ready(function () {\n        eventsToTrigger.forEach(function (type) {\n          this.trigger(type);\n        }, this);\n      });\n    }\n    /**\n     * Set current time for the `HTML5` tech.\n     *\n     * @param {number} seconds\n     *        Set the current time of the media to this.\n     */\n    ;\n\n    _proto.setCurrentTime = function setCurrentTime(seconds) {\n      try {\n        this.el_.currentTime = seconds;\n      } catch (e) {\n        log(e, 'Video is not ready. (Video.js)'); // this.warning(VideoJS.warnings.videoNotReady);\n      }\n    }\n    /**\n     * Get the current duration of the HTML5 media element.\n     *\n     * @return {number}\n     *         The duration of the media or 0 if there is no duration.\n     */\n    ;\n\n    _proto.duration = function duration() {\n      var _this5 = this;\n\n      // Android Chrome will report duration as Infinity for VOD HLS until after\n      // playback has started, which triggers the live display erroneously.\n      // Return NaN if playback has not started and trigger a durationupdate once\n      // the duration can be reliably known.\n      if (this.el_.duration === Infinity && IS_ANDROID && IS_CHROME && this.el_.currentTime === 0) {\n        // Wait for the first `timeupdate` with currentTime > 0 - there may be\n        // several with 0\n        var checkProgress = function checkProgress() {\n          if (_this5.el_.currentTime > 0) {\n            // Trigger durationchange for genuinely live video\n            if (_this5.el_.duration === Infinity) {\n              _this5.trigger('durationchange');\n            }\n\n            _this5.off('timeupdate', checkProgress);\n          }\n        };\n\n        this.on('timeupdate', checkProgress);\n        return NaN;\n      }\n\n      return this.el_.duration || NaN;\n    }\n    /**\n     * Get the current width of the HTML5 media element.\n     *\n     * @return {number}\n     *         The width of the HTML5 media element.\n     */\n    ;\n\n    _proto.width = function width() {\n      return this.el_.offsetWidth;\n    }\n    /**\n     * Get the current height of the HTML5 media element.\n     *\n     * @return {number}\n     *         The height of the HTML5 media element.\n     */\n    ;\n\n    _proto.height = function height() {\n      return this.el_.offsetHeight;\n    }\n    /**\n     * Proxy iOS `webkitbeginfullscreen` and `webkitendfullscreen` into\n     * `fullscreenchange` event.\n     *\n     * @private\n     * @fires fullscreenchange\n     * @listens webkitendfullscreen\n     * @listens webkitbeginfullscreen\n     * @listens webkitbeginfullscreen\n     */\n    ;\n\n    _proto.proxyWebkitFullscreen_ = function proxyWebkitFullscreen_() {\n      var _this6 = this;\n\n      if (!('webkitDisplayingFullscreen' in this.el_)) {\n        return;\n      }\n\n      var endFn = function endFn() {\n        this.trigger('fullscreenchange', {\n          isFullscreen: false\n        });\n      };\n\n      var beginFn = function beginFn() {\n        if ('webkitPresentationMode' in this.el_ && this.el_.webkitPresentationMode !== 'picture-in-picture') {\n          this.one('webkitendfullscreen', endFn);\n          this.trigger('fullscreenchange', {\n            isFullscreen: true\n          });\n        }\n      };\n\n      this.on('webkitbeginfullscreen', beginFn);\n      this.on('dispose', function () {\n        _this6.off('webkitbeginfullscreen', beginFn);\n\n        _this6.off('webkitendfullscreen', endFn);\n      });\n    }\n    /**\n     * Check if fullscreen is supported on the current playback device.\n     *\n     * @return {boolean}\n     *         - True if fullscreen is supported.\n     *         - False if fullscreen is not supported.\n     */\n    ;\n\n    _proto.supportsFullScreen = function supportsFullScreen() {\n      if (typeof this.el_.webkitEnterFullScreen === 'function') {\n        var userAgent = window$1.navigator && window$1.navigator.userAgent || ''; // Seems to be broken in Chromium/Chrome && Safari in Leopard\n\n        if (/Android/.test(userAgent) || !/Chrome|Mac OS X 10.5/.test(userAgent)) {\n          return true;\n        }\n      }\n\n      return false;\n    }\n    /**\n     * Request that the `HTML5` Tech enter fullscreen.\n     */\n    ;\n\n    _proto.enterFullScreen = function enterFullScreen() {\n      var video = this.el_;\n\n      if (video.paused && video.networkState <= video.HAVE_METADATA) {\n        // attempt to prime the video element for programmatic access\n        // this isn't necessary on the desktop but shouldn't hurt\n        this.el_.play(); // playing and pausing synchronously during the transition to fullscreen\n        // can get iOS ~6.1 devices into a play/pause loop\n\n        this.setTimeout(function () {\n          video.pause();\n          video.webkitEnterFullScreen();\n        }, 0);\n      } else {\n        video.webkitEnterFullScreen();\n      }\n    }\n    /**\n     * Request that the `HTML5` Tech exit fullscreen.\n     */\n    ;\n\n    _proto.exitFullScreen = function exitFullScreen() {\n      this.el_.webkitExitFullScreen();\n    }\n    /**\n     * A getter/setter for the `Html5` Tech's source object.\n     * > Note: Please use {@link Html5#setSource}\n     *\n     * @param {Tech~SourceObject} [src]\n     *        The source object you want to set on the `HTML5` techs element.\n     *\n     * @return {Tech~SourceObject|undefined}\n     *         - The current source object when a source is not passed in.\n     *         - undefined when setting\n     *\n     * @deprecated Since version 5.\n     */\n    ;\n\n    _proto.src = function src(_src) {\n      if (_src === undefined) {\n        return this.el_.src;\n      } // Setting src through `src` instead of `setSrc` will be deprecated\n\n\n      this.setSrc(_src);\n    }\n    /**\n     * Reset the tech by removing all sources and then calling\n     * {@link Html5.resetMediaElement}.\n     */\n    ;\n\n    _proto.reset = function reset() {\n      Html5.resetMediaElement(this.el_);\n    }\n    /**\n     * Get the current source on the `HTML5` Tech. Falls back to returning the source from\n     * the HTML5 media element.\n     *\n     * @return {Tech~SourceObject}\n     *         The current source object from the HTML5 tech. With a fallback to the\n     *         elements source.\n     */\n    ;\n\n    _proto.currentSrc = function currentSrc() {\n      if (this.currentSource_) {\n        return this.currentSource_.src;\n      }\n\n      return this.el_.currentSrc;\n    }\n    /**\n     * Set controls attribute for the HTML5 media Element.\n     *\n     * @param {string} val\n     *        Value to set the controls attribute to\n     */\n    ;\n\n    _proto.setControls = function setControls(val) {\n      this.el_.controls = !!val;\n    }\n    /**\n     * Create and returns a remote {@link TextTrack} object.\n     *\n     * @param {string} kind\n     *        `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata)\n     *\n     * @param {string} [label]\n     *        Label to identify the text track\n     *\n     * @param {string} [language]\n     *        Two letter language abbreviation\n     *\n     * @return {TextTrack}\n     *         The TextTrack that gets created.\n     */\n    ;\n\n    _proto.addTextTrack = function addTextTrack(kind, label, language) {\n      if (!this.featuresNativeTextTracks) {\n        return _Tech.prototype.addTextTrack.call(this, kind, label, language);\n      }\n\n      return this.el_.addTextTrack(kind, label, language);\n    }\n    /**\n     * Creates either native TextTrack or an emulated TextTrack depending\n     * on the value of `featuresNativeTextTracks`\n     *\n     * @param {Object} options\n     *        The object should contain the options to initialize the TextTrack with.\n     *\n     * @param {string} [options.kind]\n     *        `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata).\n     *\n     * @param {string} [options.label]\n     *        Label to identify the text track\n     *\n     * @param {string} [options.language]\n     *        Two letter language abbreviation.\n     *\n     * @param {boolean} [options.default]\n     *        Default this track to on.\n     *\n     * @param {string} [options.id]\n     *        The internal id to assign this track.\n     *\n     * @param {string} [options.src]\n     *        A source url for the track.\n     *\n     * @return {HTMLTrackElement}\n     *         The track element that gets created.\n     */\n    ;\n\n    _proto.createRemoteTextTrack = function createRemoteTextTrack(options) {\n      if (!this.featuresNativeTextTracks) {\n        return _Tech.prototype.createRemoteTextTrack.call(this, options);\n      }\n\n      var htmlTrackElement = document.createElement('track');\n\n      if (options.kind) {\n        htmlTrackElement.kind = options.kind;\n      }\n\n      if (options.label) {\n        htmlTrackElement.label = options.label;\n      }\n\n      if (options.language || options.srclang) {\n        htmlTrackElement.srclang = options.language || options.srclang;\n      }\n\n      if (options.default) {\n        htmlTrackElement.default = options.default;\n      }\n\n      if (options.id) {\n        htmlTrackElement.id = options.id;\n      }\n\n      if (options.src) {\n        htmlTrackElement.src = options.src;\n      }\n\n      return htmlTrackElement;\n    }\n    /**\n     * Creates a remote text track object and returns an html track element.\n     *\n     * @param {Object} options The object should contain values for\n     * kind, language, label, and src (location of the WebVTT file)\n     * @param {boolean} [manualCleanup=true] if set to false, the TextTrack will be\n     * automatically removed from the video element whenever the source changes\n     * @return {HTMLTrackElement} An Html Track Element.\n     * This can be an emulated {@link HTMLTrackElement} or a native one.\n     * @deprecated The default value of the \"manualCleanup\" parameter will default\n     * to \"false\" in upcoming versions of Video.js\n     */\n    ;\n\n    _proto.addRemoteTextTrack = function addRemoteTextTrack(options, manualCleanup) {\n      var htmlTrackElement = _Tech.prototype.addRemoteTextTrack.call(this, options, manualCleanup);\n\n      if (this.featuresNativeTextTracks) {\n        this.el().appendChild(htmlTrackElement);\n      }\n\n      return htmlTrackElement;\n    }\n    /**\n     * Remove remote `TextTrack` from `TextTrackList` object\n     *\n     * @param {TextTrack} track\n     *        `TextTrack` object to remove\n     */\n    ;\n\n    _proto.removeRemoteTextTrack = function removeRemoteTextTrack(track) {\n      _Tech.prototype.removeRemoteTextTrack.call(this, track);\n\n      if (this.featuresNativeTextTracks) {\n        var tracks = this.$$('track');\n        var i = tracks.length;\n\n        while (i--) {\n          if (track === tracks[i] || track === tracks[i].track) {\n            this.el().removeChild(tracks[i]);\n          }\n        }\n      }\n    }\n    /**\n     * Gets available media playback quality metrics as specified by the W3C's Media\n     * Playback Quality API.\n     *\n     * @see [Spec]{@link https://wicg.github.io/media-playback-quality}\n     *\n     * @return {Object}\n     *         An object with supported media playback quality metrics\n     */\n    ;\n\n    _proto.getVideoPlaybackQuality = function getVideoPlaybackQuality() {\n      if (typeof this.el().getVideoPlaybackQuality === 'function') {\n        return this.el().getVideoPlaybackQuality();\n      }\n\n      var videoPlaybackQuality = {};\n\n      if (typeof this.el().webkitDroppedFrameCount !== 'undefined' && typeof this.el().webkitDecodedFrameCount !== 'undefined') {\n        videoPlaybackQuality.droppedVideoFrames = this.el().webkitDroppedFrameCount;\n        videoPlaybackQuality.totalVideoFrames = this.el().webkitDecodedFrameCount;\n      }\n\n      if (window$1.performance && typeof window$1.performance.now === 'function') {\n        videoPlaybackQuality.creationTime = window$1.performance.now();\n      } else if (window$1.performance && window$1.performance.timing && typeof window$1.performance.timing.navigationStart === 'number') {\n        videoPlaybackQuality.creationTime = window$1.Date.now() - window$1.performance.timing.navigationStart;\n      }\n\n      return videoPlaybackQuality;\n    };\n\n    return Html5;\n  }(Tech);\n  /* HTML5 Support Testing ---------------------------------------------------- */\n\n\n  if (isReal()) {\n    /**\n     * Element for testing browser HTML5 media capabilities\n     *\n     * @type {Element}\n     * @constant\n     * @private\n     */\n    Html5.TEST_VID = document.createElement('video');\n    var track = document.createElement('track');\n    track.kind = 'captions';\n    track.srclang = 'en';\n    track.label = 'English';\n    Html5.TEST_VID.appendChild(track);\n  }\n  /**\n   * Check if HTML5 media is supported by this browser/device.\n   *\n   * @return {boolean}\n   *         - True if HTML5 media is supported.\n   *         - False if HTML5 media is not supported.\n   */\n\n\n  Html5.isSupported = function () {\n    // IE with no Media Player is a LIAR! (#984)\n    try {\n      Html5.TEST_VID.volume = 0.5;\n    } catch (e) {\n      return false;\n    }\n\n    return !!(Html5.TEST_VID && Html5.TEST_VID.canPlayType);\n  };\n  /**\n   * Check if the tech can support the given type\n   *\n   * @param {string} type\n   *        The mimetype to check\n   * @return {string} 'probably', 'maybe', or '' (empty string)\n   */\n\n\n  Html5.canPlayType = function (type) {\n    return Html5.TEST_VID.canPlayType(type);\n  };\n  /**\n   * Check if the tech can support the given source\n   *\n   * @param {Object} srcObj\n   *        The source object\n   * @param {Object} options\n   *        The options passed to the tech\n   * @return {string} 'probably', 'maybe', or '' (empty string)\n   */\n\n\n  Html5.canPlaySource = function (srcObj, options) {\n    return Html5.canPlayType(srcObj.type);\n  };\n  /**\n   * Check if the volume can be changed in this browser/device.\n   * Volume cannot be changed in a lot of mobile devices.\n   * Specifically, it can't be changed from 1 on iOS.\n   *\n   * @return {boolean}\n   *         - True if volume can be controlled\n   *         - False otherwise\n   */\n\n\n  Html5.canControlVolume = function () {\n    // IE will error if Windows Media Player not installed #3315\n    try {\n      var volume = Html5.TEST_VID.volume;\n      Html5.TEST_VID.volume = volume / 2 + 0.1;\n      return volume !== Html5.TEST_VID.volume;\n    } catch (e) {\n      return false;\n    }\n  };\n  /**\n   * Check if the volume can be muted in this browser/device.\n   * Some devices, e.g. iOS, don't allow changing volume\n   * but permits muting/unmuting.\n   *\n   * @return {bolean}\n   *      - True if volume can be muted\n   *      - False otherwise\n   */\n\n\n  Html5.canMuteVolume = function () {\n    try {\n      var muted = Html5.TEST_VID.muted; // in some versions of iOS muted property doesn't always\n      // work, so we want to set both property and attribute\n\n      Html5.TEST_VID.muted = !muted;\n\n      if (Html5.TEST_VID.muted) {\n        setAttribute(Html5.TEST_VID, 'muted', 'muted');\n      } else {\n        removeAttribute(Html5.TEST_VID, 'muted', 'muted');\n      }\n\n      return muted !== Html5.TEST_VID.muted;\n    } catch (e) {\n      return false;\n    }\n  };\n  /**\n   * Check if the playback rate can be changed in this browser/device.\n   *\n   * @return {boolean}\n   *         - True if playback rate can be controlled\n   *         - False otherwise\n   */\n\n\n  Html5.canControlPlaybackRate = function () {\n    // Playback rate API is implemented in Android Chrome, but doesn't do anything\n    // https://github.com/videojs/video.js/issues/3180\n    if (IS_ANDROID && IS_CHROME && CHROME_VERSION < 58) {\n      return false;\n    } // IE will error if Windows Media Player not installed #3315\n\n\n    try {\n      var playbackRate = Html5.TEST_VID.playbackRate;\n      Html5.TEST_VID.playbackRate = playbackRate / 2 + 0.1;\n      return playbackRate !== Html5.TEST_VID.playbackRate;\n    } catch (e) {\n      return false;\n    }\n  };\n  /**\n   * Check if we can override a video/audio elements attributes, with\n   * Object.defineProperty.\n   *\n   * @return {boolean}\n   *         - True if builtin attributes can be overridden\n   *         - False otherwise\n   */\n\n\n  Html5.canOverrideAttributes = function () {\n    // if we cannot overwrite the src/innerHTML property, there is no support\n    // iOS 7 safari for instance cannot do this.\n    try {\n      var noop = function noop() {};\n\n      Object.defineProperty(document.createElement('video'), 'src', {\n        get: noop,\n        set: noop\n      });\n      Object.defineProperty(document.createElement('audio'), 'src', {\n        get: noop,\n        set: noop\n      });\n      Object.defineProperty(document.createElement('video'), 'innerHTML', {\n        get: noop,\n        set: noop\n      });\n      Object.defineProperty(document.createElement('audio'), 'innerHTML', {\n        get: noop,\n        set: noop\n      });\n    } catch (e) {\n      return false;\n    }\n\n    return true;\n  };\n  /**\n   * Check to see if native `TextTrack`s are supported by this browser/device.\n   *\n   * @return {boolean}\n   *         - True if native `TextTrack`s are supported.\n   *         - False otherwise\n   */\n\n\n  Html5.supportsNativeTextTracks = function () {\n    return IS_ANY_SAFARI || IS_IOS && IS_CHROME;\n  };\n  /**\n   * Check to see if native `VideoTrack`s are supported by this browser/device\n   *\n   * @return {boolean}\n   *        - True if native `VideoTrack`s are supported.\n   *        - False otherwise\n   */\n\n\n  Html5.supportsNativeVideoTracks = function () {\n    return !!(Html5.TEST_VID && Html5.TEST_VID.videoTracks);\n  };\n  /**\n   * Check to see if native `AudioTrack`s are supported by this browser/device\n   *\n   * @return {boolean}\n   *        - True if native `AudioTrack`s are supported.\n   *        - False otherwise\n   */\n\n\n  Html5.supportsNativeAudioTracks = function () {\n    return !!(Html5.TEST_VID && Html5.TEST_VID.audioTracks);\n  };\n  /**\n   * An array of events available on the Html5 tech.\n   *\n   * @private\n   * @type {Array}\n   */\n\n\n  Html5.Events = ['loadstart', 'suspend', 'abort', 'error', 'emptied', 'stalled', 'loadedmetadata', 'loadeddata', 'canplay', 'canplaythrough', 'playing', 'waiting', 'seeking', 'seeked', 'ended', 'durationchange', 'timeupdate', 'progress', 'play', 'pause', 'ratechange', 'resize', 'volumechange'];\n  /**\n   * Boolean indicating whether the `Tech` supports volume control.\n   *\n   * @type {boolean}\n   * @default {@link Html5.canControlVolume}\n   */\n\n  Html5.prototype.featuresVolumeControl = Html5.canControlVolume();\n  /**\n   * Boolean indicating whether the `Tech` supports muting volume.\n   *\n   * @type {bolean}\n   * @default {@link Html5.canMuteVolume}\n   */\n\n  Html5.prototype.featuresMuteControl = Html5.canMuteVolume();\n  /**\n   * Boolean indicating whether the `Tech` supports changing the speed at which the media\n   * plays. Examples:\n   *   - Set player to play 2x (twice) as fast\n   *   - Set player to play 0.5x (half) as fast\n   *\n   * @type {boolean}\n   * @default {@link Html5.canControlPlaybackRate}\n   */\n\n  Html5.prototype.featuresPlaybackRate = Html5.canControlPlaybackRate();\n  /**\n   * Boolean indicating whether the `Tech` supports the `sourceset` event.\n   *\n   * @type {boolean}\n   * @default\n   */\n\n  Html5.prototype.featuresSourceset = Html5.canOverrideAttributes();\n  /**\n   * Boolean indicating whether the `HTML5` tech currently supports the media element\n   * moving in the DOM. iOS breaks if you move the media element, so this is set this to\n   * false there. Everywhere else this should be true.\n   *\n   * @type {boolean}\n   * @default\n   */\n\n  Html5.prototype.movingMediaElementInDOM = !IS_IOS; // TODO: Previous comment: No longer appears to be used. Can probably be removed.\n  //       Is this true?\n\n  /**\n   * Boolean indicating whether the `HTML5` tech currently supports automatic media resize\n   * when going into fullscreen.\n   *\n   * @type {boolean}\n   * @default\n   */\n\n  Html5.prototype.featuresFullscreenResize = true;\n  /**\n   * Boolean indicating whether the `HTML5` tech currently supports the progress event.\n   * If this is false, manual `progress` events will be triggered instead.\n   *\n   * @type {boolean}\n   * @default\n   */\n\n  Html5.prototype.featuresProgressEvents = true;\n  /**\n   * Boolean indicating whether the `HTML5` tech currently supports the timeupdate event.\n   * If this is false, manual `timeupdate` events will be triggered instead.\n   *\n   * @default\n   */\n\n  Html5.prototype.featuresTimeupdateEvents = true;\n  /**\n   * Boolean indicating whether the `HTML5` tech currently supports native `TextTrack`s.\n   *\n   * @type {boolean}\n   * @default {@link Html5.supportsNativeTextTracks}\n   */\n\n  Html5.prototype.featuresNativeTextTracks = Html5.supportsNativeTextTracks();\n  /**\n   * Boolean indicating whether the `HTML5` tech currently supports native `VideoTrack`s.\n   *\n   * @type {boolean}\n   * @default {@link Html5.supportsNativeVideoTracks}\n   */\n\n  Html5.prototype.featuresNativeVideoTracks = Html5.supportsNativeVideoTracks();\n  /**\n   * Boolean indicating whether the `HTML5` tech currently supports native `AudioTrack`s.\n   *\n   * @type {boolean}\n   * @default {@link Html5.supportsNativeAudioTracks}\n   */\n\n  Html5.prototype.featuresNativeAudioTracks = Html5.supportsNativeAudioTracks(); // HTML5 Feature detection and Device Fixes --------------------------------- //\n\n  var canPlayType = Html5.TEST_VID && Html5.TEST_VID.constructor.prototype.canPlayType;\n  var mpegurlRE = /^application\\/(?:x-|vnd\\.apple\\.)mpegurl/i;\n\n  Html5.patchCanPlayType = function () {\n    // Android 4.0 and above can play HLS to some extent but it reports being unable to do so\n    // Firefox and Chrome report correctly\n    if (ANDROID_VERSION >= 4.0 && !IS_FIREFOX && !IS_CHROME) {\n      Html5.TEST_VID.constructor.prototype.canPlayType = function (type) {\n        if (type && mpegurlRE.test(type)) {\n          return 'maybe';\n        }\n\n        return canPlayType.call(this, type);\n      };\n    }\n  };\n\n  Html5.unpatchCanPlayType = function () {\n    var r = Html5.TEST_VID.constructor.prototype.canPlayType;\n    Html5.TEST_VID.constructor.prototype.canPlayType = canPlayType;\n    return r;\n  }; // by default, patch the media element\n\n\n  Html5.patchCanPlayType();\n\n  Html5.disposeMediaElement = function (el) {\n    if (!el) {\n      return;\n    }\n\n    if (el.parentNode) {\n      el.parentNode.removeChild(el);\n    } // remove any child track or source nodes to prevent their loading\n\n\n    while (el.hasChildNodes()) {\n      el.removeChild(el.firstChild);\n    } // remove any src reference. not setting `src=''` because that causes a warning\n    // in firefox\n\n\n    el.removeAttribute('src'); // force the media element to update its loading state by calling load()\n    // however IE on Windows 7N has a bug that throws an error so need a try/catch (#793)\n\n    if (typeof el.load === 'function') {\n      // wrapping in an iife so it's not deoptimized (#1060#discussion_r10324473)\n      (function () {\n        try {\n          el.load();\n        } catch (e) {// not supported\n        }\n      })();\n    }\n  };\n\n  Html5.resetMediaElement = function (el) {\n    if (!el) {\n      return;\n    }\n\n    var sources = el.querySelectorAll('source');\n    var i = sources.length;\n\n    while (i--) {\n      el.removeChild(sources[i]);\n    } // remove any src reference.\n    // not setting `src=''` because that throws an error\n\n\n    el.removeAttribute('src');\n\n    if (typeof el.load === 'function') {\n      // wrapping in an iife so it's not deoptimized (#1060#discussion_r10324473)\n      (function () {\n        try {\n          el.load();\n        } catch (e) {// satisfy linter\n        }\n      })();\n    }\n  };\n  /* Native HTML5 element property wrapping ----------------------------------- */\n  // Wrap native boolean attributes with getters that check both property and attribute\n  // The list is as followed:\n  // muted, defaultMuted, autoplay, controls, loop, playsinline\n\n\n  [\n  /**\n   * Get the value of `muted` from the media element. `muted` indicates\n   * that the volume for the media should be set to silent. This does not actually change\n   * the `volume` attribute.\n   *\n   * @method Html5#muted\n   * @return {boolean}\n   *         - True if the value of `volume` should be ignored and the audio set to silent.\n   *         - False if the value of `volume` should be used.\n   *\n   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-muted}\n   */\n  'muted',\n  /**\n   * Get the value of `defaultMuted` from the media element. `defaultMuted` indicates\n   * whether the media should start muted or not. Only changes the default state of the\n   * media. `muted` and `defaultMuted` can have different values. {@link Html5#muted} indicates the\n   * current state.\n   *\n   * @method Html5#defaultMuted\n   * @return {boolean}\n   *         - The value of `defaultMuted` from the media element.\n   *         - True indicates that the media should start muted.\n   *         - False indicates that the media should not start muted\n   *\n   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-defaultmuted}\n   */\n  'defaultMuted',\n  /**\n   * Get the value of `autoplay` from the media element. `autoplay` indicates\n   * that the media should start to play as soon as the page is ready.\n   *\n   * @method Html5#autoplay\n   * @return {boolean}\n   *         - The value of `autoplay` from the media element.\n   *         - True indicates that the media should start as soon as the page loads.\n   *         - False indicates that the media should not start as soon as the page loads.\n   *\n   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-autoplay}\n   */\n  'autoplay',\n  /**\n   * Get the value of `controls` from the media element. `controls` indicates\n   * whether the native media controls should be shown or hidden.\n   *\n   * @method Html5#controls\n   * @return {boolean}\n   *         - The value of `controls` from the media element.\n   *         - True indicates that native controls should be showing.\n   *         - False indicates that native controls should be hidden.\n   *\n   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-controls}\n   */\n  'controls',\n  /**\n   * Get the value of `loop` from the media element. `loop` indicates\n   * that the media should return to the start of the media and continue playing once\n   * it reaches the end.\n   *\n   * @method Html5#loop\n   * @return {boolean}\n   *         - The value of `loop` from the media element.\n   *         - True indicates that playback should seek back to start once\n   *           the end of a media is reached.\n   *         - False indicates that playback should not loop back to the start when the\n   *           end of the media is reached.\n   *\n   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-loop}\n   */\n  'loop',\n  /**\n   * Get the value of `playsinline` from the media element. `playsinline` indicates\n   * to the browser that non-fullscreen playback is preferred when fullscreen\n   * playback is the native default, such as in iOS Safari.\n   *\n   * @method Html5#playsinline\n   * @return {boolean}\n   *         - The value of `playsinline` from the media element.\n   *         - True indicates that the media should play inline.\n   *         - False indicates that the media should not play inline.\n   *\n   * @see [Spec]{@link https://html.spec.whatwg.org/#attr-video-playsinline}\n   */\n  'playsinline'].forEach(function (prop) {\n    Html5.prototype[prop] = function () {\n      return this.el_[prop] || this.el_.hasAttribute(prop);\n    };\n  }); // Wrap native boolean attributes with setters that set both property and attribute\n  // The list is as followed:\n  // setMuted, setDefaultMuted, setAutoplay, setLoop, setPlaysinline\n  // setControls is special-cased above\n\n  [\n  /**\n   * Set the value of `muted` on the media element. `muted` indicates that the current\n   * audio level should be silent.\n   *\n   * @method Html5#setMuted\n   * @param {boolean} muted\n   *        - True if the audio should be set to silent\n   *        - False otherwise\n   *\n   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-muted}\n   */\n  'muted',\n  /**\n   * Set the value of `defaultMuted` on the media element. `defaultMuted` indicates that the current\n   * audio level should be silent, but will only effect the muted level on intial playback..\n   *\n   * @method Html5.prototype.setDefaultMuted\n   * @param {boolean} defaultMuted\n   *        - True if the audio should be set to silent\n   *        - False otherwise\n   *\n   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-defaultmuted}\n   */\n  'defaultMuted',\n  /**\n   * Set the value of `autoplay` on the media element. `autoplay` indicates\n   * that the media should start to play as soon as the page is ready.\n   *\n   * @method Html5#setAutoplay\n   * @param {boolean} autoplay\n   *         - True indicates that the media should start as soon as the page loads.\n   *         - False indicates that the media should not start as soon as the page loads.\n   *\n   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-autoplay}\n   */\n  'autoplay',\n  /**\n   * Set the value of `loop` on the media element. `loop` indicates\n   * that the media should return to the start of the media and continue playing once\n   * it reaches the end.\n   *\n   * @method Html5#setLoop\n   * @param {boolean} loop\n   *         - True indicates that playback should seek back to start once\n   *           the end of a media is reached.\n   *         - False indicates that playback should not loop back to the start when the\n   *           end of the media is reached.\n   *\n   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-loop}\n   */\n  'loop',\n  /**\n   * Set the value of `playsinline` from the media element. `playsinline` indicates\n   * to the browser that non-fullscreen playback is preferred when fullscreen\n   * playback is the native default, such as in iOS Safari.\n   *\n   * @method Html5#setPlaysinline\n   * @param {boolean} playsinline\n   *         - True indicates that the media should play inline.\n   *         - False indicates that the media should not play inline.\n   *\n   * @see [Spec]{@link https://html.spec.whatwg.org/#attr-video-playsinline}\n   */\n  'playsinline'].forEach(function (prop) {\n    Html5.prototype['set' + toTitleCase(prop)] = function (v) {\n      this.el_[prop] = v;\n\n      if (v) {\n        this.el_.setAttribute(prop, prop);\n      } else {\n        this.el_.removeAttribute(prop);\n      }\n    };\n  }); // Wrap native properties with a getter\n  // The list is as followed\n  // paused, currentTime, buffered, volume, poster, preload, error, seeking\n  // seekable, ended, playbackRate, defaultPlaybackRate, played, networkState\n  // readyState, videoWidth, videoHeight\n\n  [\n  /**\n   * Get the value of `paused` from the media element. `paused` indicates whether the media element\n   * is currently paused or not.\n   *\n   * @method Html5#paused\n   * @return {boolean}\n   *         The value of `paused` from the media element.\n   *\n   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-paused}\n   */\n  'paused',\n  /**\n   * Get the value of `currentTime` from the media element. `currentTime` indicates\n   * the current second that the media is at in playback.\n   *\n   * @method Html5#currentTime\n   * @return {number}\n   *         The value of `currentTime` from the media element.\n   *\n   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-currenttime}\n   */\n  'currentTime',\n  /**\n   * Get the value of `buffered` from the media element. `buffered` is a `TimeRange`\n   * object that represents the parts of the media that are already downloaded and\n   * available for playback.\n   *\n   * @method Html5#buffered\n   * @return {TimeRange}\n   *         The value of `buffered` from the media element.\n   *\n   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-buffered}\n   */\n  'buffered',\n  /**\n   * Get the value of `volume` from the media element. `volume` indicates\n   * the current playback volume of audio for a media. `volume` will be a value from 0\n   * (silent) to 1 (loudest and default).\n   *\n   * @method Html5#volume\n   * @return {number}\n   *         The value of `volume` from the media element. Value will be between 0-1.\n   *\n   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-a-volume}\n   */\n  'volume',\n  /**\n   * Get the value of `poster` from the media element. `poster` indicates\n   * that the url of an image file that can/will be shown when no media data is available.\n   *\n   * @method Html5#poster\n   * @return {string}\n   *         The value of `poster` from the media element. Value will be a url to an\n   *         image.\n   *\n   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-video-poster}\n   */\n  'poster',\n  /**\n   * Get the value of `preload` from the media element. `preload` indicates\n   * what should download before the media is interacted with. It can have the following\n   * values:\n   * - none: nothing should be downloaded\n   * - metadata: poster and the first few frames of the media may be downloaded to get\n   *   media dimensions and other metadata\n   * - auto: allow the media and metadata for the media to be downloaded before\n   *    interaction\n   *\n   * @method Html5#preload\n   * @return {string}\n   *         The value of `preload` from the media element. Will be 'none', 'metadata',\n   *         or 'auto'.\n   *\n   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-preload}\n   */\n  'preload',\n  /**\n   * Get the value of the `error` from the media element. `error` indicates any\n   * MediaError that may have occurred during playback. If error returns null there is no\n   * current error.\n   *\n   * @method Html5#error\n   * @return {MediaError|null}\n   *         The value of `error` from the media element. Will be `MediaError` if there\n   *         is a current error and null otherwise.\n   *\n   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-error}\n   */\n  'error',\n  /**\n   * Get the value of `seeking` from the media element. `seeking` indicates whether the\n   * media is currently seeking to a new position or not.\n   *\n   * @method Html5#seeking\n   * @return {boolean}\n   *         - The value of `seeking` from the media element.\n   *         - True indicates that the media is currently seeking to a new position.\n   *         - False indicates that the media is not seeking to a new position at this time.\n   *\n   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-seeking}\n   */\n  'seeking',\n  /**\n   * Get the value of `seekable` from the media element. `seekable` returns a\n   * `TimeRange` object indicating ranges of time that can currently be `seeked` to.\n   *\n   * @method Html5#seekable\n   * @return {TimeRange}\n   *         The value of `seekable` from the media element. A `TimeRange` object\n   *         indicating the current ranges of time that can be seeked to.\n   *\n   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-seekable}\n   */\n  'seekable',\n  /**\n   * Get the value of `ended` from the media element. `ended` indicates whether\n   * the media has reached the end or not.\n   *\n   * @method Html5#ended\n   * @return {boolean}\n   *         - The value of `ended` from the media element.\n   *         - True indicates that the media has ended.\n   *         - False indicates that the media has not ended.\n   *\n   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-ended}\n   */\n  'ended',\n  /**\n   * Get the value of `playbackRate` from the media element. `playbackRate` indicates\n   * the rate at which the media is currently playing back. Examples:\n   *   - if playbackRate is set to 2, media will play twice as fast.\n   *   - if playbackRate is set to 0.5, media will play half as fast.\n   *\n   * @method Html5#playbackRate\n   * @return {number}\n   *         The value of `playbackRate` from the media element. A number indicating\n   *         the current playback speed of the media, where 1 is normal speed.\n   *\n   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-playbackrate}\n   */\n  'playbackRate',\n  /**\n   * Get the value of `defaultPlaybackRate` from the media element. `defaultPlaybackRate` indicates\n   * the rate at which the media is currently playing back. This value will not indicate the current\n   * `playbackRate` after playback has started, use {@link Html5#playbackRate} for that.\n   *\n   * Examples:\n   *   - if defaultPlaybackRate is set to 2, media will play twice as fast.\n   *   - if defaultPlaybackRate is set to 0.5, media will play half as fast.\n   *\n   * @method Html5.prototype.defaultPlaybackRate\n   * @return {number}\n   *         The value of `defaultPlaybackRate` from the media element. A number indicating\n   *         the current playback speed of the media, where 1 is normal speed.\n   *\n   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-playbackrate}\n   */\n  'defaultPlaybackRate',\n  /**\n   * Get the value of `played` from the media element. `played` returns a `TimeRange`\n   * object representing points in the media timeline that have been played.\n   *\n   * @method Html5#played\n   * @return {TimeRange}\n   *         The value of `played` from the media element. A `TimeRange` object indicating\n   *         the ranges of time that have been played.\n   *\n   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-played}\n   */\n  'played',\n  /**\n   * Get the value of `networkState` from the media element. `networkState` indicates\n   * the current network state. It returns an enumeration from the following list:\n   * - 0: NETWORK_EMPTY\n   * - 1: NETWORK_IDLE\n   * - 2: NETWORK_LOADING\n   * - 3: NETWORK_NO_SOURCE\n   *\n   * @method Html5#networkState\n   * @return {number}\n   *         The value of `networkState` from the media element. This will be a number\n   *         from the list in the description.\n   *\n   * @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-networkstate}\n   */\n  'networkState',\n  /**\n   * Get the value of `readyState` from the media element. `readyState` indicates\n   * the current state of the media element. It returns an enumeration from the\n   * following list:\n   * - 0: HAVE_NOTHING\n   * - 1: HAVE_METADATA\n   * - 2: HAVE_CURRENT_DATA\n   * - 3: HAVE_FUTURE_DATA\n   * - 4: HAVE_ENOUGH_DATA\n   *\n   * @method Html5#readyState\n   * @return {number}\n   *         The value of `readyState` from the media element. This will be a number\n   *         from the list in the description.\n   *\n   * @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#ready-states}\n   */\n  'readyState',\n  /**\n   * Get the value of `videoWidth` from the video element. `videoWidth` indicates\n   * the current width of the video in css pixels.\n   *\n   * @method Html5#videoWidth\n   * @return {number}\n   *         The value of `videoWidth` from the video element. This will be a number\n   *         in css pixels.\n   *\n   * @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-video-videowidth}\n   */\n  'videoWidth',\n  /**\n   * Get the value of `videoHeight` from the video element. `videoHeight` indicates\n   * the current height of the video in css pixels.\n   *\n   * @method Html5#videoHeight\n   * @return {number}\n   *         The value of `videoHeight` from the video element. This will be a number\n   *         in css pixels.\n   *\n   * @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-video-videowidth}\n   */\n  'videoHeight'].forEach(function (prop) {\n    Html5.prototype[prop] = function () {\n      return this.el_[prop];\n    };\n  }); // Wrap native properties with a setter in this format:\n  // set + toTitleCase(name)\n  // The list is as follows:\n  // setVolume, setSrc, setPoster, setPreload, setPlaybackRate, setDefaultPlaybackRate\n\n  [\n  /**\n   * Set the value of `volume` on the media element. `volume` indicates the current\n   * audio level as a percentage in decimal form. This means that 1 is 100%, 0.5 is 50%, and\n   * so on.\n   *\n   * @method Html5#setVolume\n   * @param {number} percentAsDecimal\n   *        The volume percent as a decimal. Valid range is from 0-1.\n   *\n   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-a-volume}\n   */\n  'volume',\n  /**\n   * Set the value of `src` on the media element. `src` indicates the current\n   * {@link Tech~SourceObject} for the media.\n   *\n   * @method Html5#setSrc\n   * @param {Tech~SourceObject} src\n   *        The source object to set as the current source.\n   *\n   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-src}\n   */\n  'src',\n  /**\n   * Set the value of `poster` on the media element. `poster` is the url to\n   * an image file that can/will be shown when no media data is available.\n   *\n   * @method Html5#setPoster\n   * @param {string} poster\n   *        The url to an image that should be used as the `poster` for the media\n   *        element.\n   *\n   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-poster}\n   */\n  'poster',\n  /**\n   * Set the value of `preload` on the media element. `preload` indicates\n   * what should download before the media is interacted with. It can have the following\n   * values:\n   * - none: nothing should be downloaded\n   * - metadata: poster and the first few frames of the media may be downloaded to get\n   *   media dimensions and other metadata\n   * - auto: allow the media and metadata for the media to be downloaded before\n   *    interaction\n   *\n   * @method Html5#setPreload\n   * @param {string} preload\n   *         The value of `preload` to set on the media element. Must be 'none', 'metadata',\n   *         or 'auto'.\n   *\n   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-preload}\n   */\n  'preload',\n  /**\n   * Set the value of `playbackRate` on the media element. `playbackRate` indicates\n   * the rate at which the media should play back. Examples:\n   *   - if playbackRate is set to 2, media will play twice as fast.\n   *   - if playbackRate is set to 0.5, media will play half as fast.\n   *\n   * @method Html5#setPlaybackRate\n   * @return {number}\n   *         The value of `playbackRate` from the media element. A number indicating\n   *         the current playback speed of the media, where 1 is normal speed.\n   *\n   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-playbackrate}\n   */\n  'playbackRate',\n  /**\n   * Set the value of `defaultPlaybackRate` on the media element. `defaultPlaybackRate` indicates\n   * the rate at which the media should play back upon initial startup. Changing this value\n   * after a video has started will do nothing. Instead you should used {@link Html5#setPlaybackRate}.\n   *\n   * Example Values:\n   *   - if playbackRate is set to 2, media will play twice as fast.\n   *   - if playbackRate is set to 0.5, media will play half as fast.\n   *\n   * @method Html5.prototype.setDefaultPlaybackRate\n   * @return {number}\n   *         The value of `defaultPlaybackRate` from the media element. A number indicating\n   *         the current playback speed of the media, where 1 is normal speed.\n   *\n   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-defaultplaybackrate}\n   */\n  'defaultPlaybackRate'].forEach(function (prop) {\n    Html5.prototype['set' + toTitleCase(prop)] = function (v) {\n      this.el_[prop] = v;\n    };\n  }); // wrap native functions with a function\n  // The list is as follows:\n  // pause, load, play\n\n  [\n  /**\n   * A wrapper around the media elements `pause` function. This will call the `HTML5`\n   * media elements `pause` function.\n   *\n   * @method Html5#pause\n   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-pause}\n   */\n  'pause',\n  /**\n   * A wrapper around the media elements `load` function. This will call the `HTML5`s\n   * media element `load` function.\n   *\n   * @method Html5#load\n   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-load}\n   */\n  'load',\n  /**\n   * A wrapper around the media elements `play` function. This will call the `HTML5`s\n   * media element `play` function.\n   *\n   * @method Html5#play\n   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-play}\n   */\n  'play'].forEach(function (prop) {\n    Html5.prototype[prop] = function () {\n      return this.el_[prop]();\n    };\n  });\n  Tech.withSourceHandlers(Html5);\n  /**\n   * Native source handler for Html5, simply passes the source to the media element.\n   *\n   * @property {Tech~SourceObject} source\n   *        The source object\n   *\n   * @property {Html5} tech\n   *        The instance of the HTML5 tech.\n   */\n\n  Html5.nativeSourceHandler = {};\n  /**\n   * Check if the media element can play the given mime type.\n   *\n   * @param {string} type\n   *        The mimetype to check\n   *\n   * @return {string}\n   *         'probably', 'maybe', or '' (empty string)\n   */\n\n  Html5.nativeSourceHandler.canPlayType = function (type) {\n    // IE without MediaPlayer throws an error (#519)\n    try {\n      return Html5.TEST_VID.canPlayType(type);\n    } catch (e) {\n      return '';\n    }\n  };\n  /**\n   * Check if the media element can handle a source natively.\n   *\n   * @param {Tech~SourceObject} source\n   *         The source object\n   *\n   * @param {Object} [options]\n   *         Options to be passed to the tech.\n   *\n   * @return {string}\n   *         'probably', 'maybe', or '' (empty string).\n   */\n\n\n  Html5.nativeSourceHandler.canHandleSource = function (source, options) {\n    // If a type was provided we should rely on that\n    if (source.type) {\n      return Html5.nativeSourceHandler.canPlayType(source.type); // If no type, fall back to checking 'video/[EXTENSION]'\n    } else if (source.src) {\n      var ext = getFileExtension(source.src);\n      return Html5.nativeSourceHandler.canPlayType(\"video/\" + ext);\n    }\n\n    return '';\n  };\n  /**\n   * Pass the source to the native media element.\n   *\n   * @param {Tech~SourceObject} source\n   *        The source object\n   *\n   * @param {Html5} tech\n   *        The instance of the Html5 tech\n   *\n   * @param {Object} [options]\n   *        The options to pass to the source\n   */\n\n\n  Html5.nativeSourceHandler.handleSource = function (source, tech, options) {\n    tech.setSrc(source.src);\n  };\n  /**\n   * A noop for the native dispose function, as cleanup is not needed.\n   */\n\n\n  Html5.nativeSourceHandler.dispose = function () {}; // Register the native source handler\n\n\n  Html5.registerSourceHandler(Html5.nativeSourceHandler);\n  Tech.registerTech('Html5', Html5);\n\n  function _templateObject$2() {\n    var data = _taggedTemplateLiteralLoose([\"\\n        Using the tech directly can be dangerous. I hope you know what you're doing.\\n        See https://github.com/videojs/video.js/issues/2617 for more info.\\n      \"]);\n\n    _templateObject$2 = function _templateObject() {\n      return data;\n    };\n\n    return data;\n  }\n  // on the player when they happen\n\n  var TECH_EVENTS_RETRIGGER = [\n  /**\n   * Fired while the user agent is downloading media data.\n   *\n   * @event Player#progress\n   * @type {EventTarget~Event}\n   */\n\n  /**\n   * Retrigger the `progress` event that was triggered by the {@link Tech}.\n   *\n   * @private\n   * @method Player#handleTechProgress_\n   * @fires Player#progress\n   * @listens Tech#progress\n   */\n  'progress',\n  /**\n   * Fires when the loading of an audio/video is aborted.\n   *\n   * @event Player#abort\n   * @type {EventTarget~Event}\n   */\n\n  /**\n   * Retrigger the `abort` event that was triggered by the {@link Tech}.\n   *\n   * @private\n   * @method Player#handleTechAbort_\n   * @fires Player#abort\n   * @listens Tech#abort\n   */\n  'abort',\n  /**\n   * Fires when the browser is intentionally not getting media data.\n   *\n   * @event Player#suspend\n   * @type {EventTarget~Event}\n   */\n\n  /**\n   * Retrigger the `suspend` event that was triggered by the {@link Tech}.\n   *\n   * @private\n   * @method Player#handleTechSuspend_\n   * @fires Player#suspend\n   * @listens Tech#suspend\n   */\n  'suspend',\n  /**\n   * Fires when the current playlist is empty.\n   *\n   * @event Player#emptied\n   * @type {EventTarget~Event}\n   */\n\n  /**\n   * Retrigger the `emptied` event that was triggered by the {@link Tech}.\n   *\n   * @private\n   * @method Player#handleTechEmptied_\n   * @fires Player#emptied\n   * @listens Tech#emptied\n   */\n  'emptied',\n  /**\n   * Fires when the browser is trying to get media data, but data is not available.\n   *\n   * @event Player#stalled\n   * @type {EventTarget~Event}\n   */\n\n  /**\n   * Retrigger the `stalled` event that was triggered by the {@link Tech}.\n   *\n   * @private\n   * @method Player#handleTechStalled_\n   * @fires Player#stalled\n   * @listens Tech#stalled\n   */\n  'stalled',\n  /**\n   * Fires when the browser has loaded meta data for the audio/video.\n   *\n   * @event Player#loadedmetadata\n   * @type {EventTarget~Event}\n   */\n\n  /**\n   * Retrigger the `stalled` event that was triggered by the {@link Tech}.\n   *\n   * @private\n   * @method Player#handleTechLoadedmetadata_\n   * @fires Player#loadedmetadata\n   * @listens Tech#loadedmetadata\n   */\n  'loadedmetadata',\n  /**\n   * Fires when the browser has loaded the current frame of the audio/video.\n   *\n   * @event Player#loadeddata\n   * @type {event}\n   */\n\n  /**\n   * Retrigger the `loadeddata` event that was triggered by the {@link Tech}.\n   *\n   * @private\n   * @method Player#handleTechLoaddeddata_\n   * @fires Player#loadeddata\n   * @listens Tech#loadeddata\n   */\n  'loadeddata',\n  /**\n   * Fires when the current playback position has changed.\n   *\n   * @event Player#timeupdate\n   * @type {event}\n   */\n\n  /**\n   * Retrigger the `timeupdate` event that was triggered by the {@link Tech}.\n   *\n   * @private\n   * @method Player#handleTechTimeUpdate_\n   * @fires Player#timeupdate\n   * @listens Tech#timeupdate\n   */\n  'timeupdate',\n  /**\n   * Fires when the video's intrinsic dimensions change\n   *\n   * @event Player#resize\n   * @type {event}\n   */\n\n  /**\n   * Retrigger the `resize` event that was triggered by the {@link Tech}.\n   *\n   * @private\n   * @method Player#handleTechResize_\n   * @fires Player#resize\n   * @listens Tech#resize\n   */\n  'resize',\n  /**\n   * Fires when the volume has been changed\n   *\n   * @event Player#volumechange\n   * @type {event}\n   */\n\n  /**\n   * Retrigger the `volumechange` event that was triggered by the {@link Tech}.\n   *\n   * @private\n   * @method Player#handleTechVolumechange_\n   * @fires Player#volumechange\n   * @listens Tech#volumechange\n   */\n  'volumechange',\n  /**\n   * Fires when the text track has been changed\n   *\n   * @event Player#texttrackchange\n   * @type {event}\n   */\n\n  /**\n   * Retrigger the `texttrackchange` event that was triggered by the {@link Tech}.\n   *\n   * @private\n   * @method Player#handleTechTexttrackchange_\n   * @fires Player#texttrackchange\n   * @listens Tech#texttrackchange\n   */\n  'texttrackchange']; // events to queue when playback rate is zero\n  // this is a hash for the sole purpose of mapping non-camel-cased event names\n  // to camel-cased function names\n\n  var TECH_EVENTS_QUEUE = {\n    canplay: 'CanPlay',\n    canplaythrough: 'CanPlayThrough',\n    playing: 'Playing',\n    seeked: 'Seeked'\n  };\n  var BREAKPOINT_ORDER = ['tiny', 'xsmall', 'small', 'medium', 'large', 'xlarge', 'huge'];\n  var BREAKPOINT_CLASSES = {}; // grep: vjs-layout-tiny\n  // grep: vjs-layout-x-small\n  // grep: vjs-layout-small\n  // grep: vjs-layout-medium\n  // grep: vjs-layout-large\n  // grep: vjs-layout-x-large\n  // grep: vjs-layout-huge\n\n  BREAKPOINT_ORDER.forEach(function (k) {\n    var v = k.charAt(0) === 'x' ? \"x-\" + k.substring(1) : k;\n    BREAKPOINT_CLASSES[k] = \"vjs-layout-\" + v;\n  });\n  var DEFAULT_BREAKPOINTS = {\n    tiny: 210,\n    xsmall: 320,\n    small: 425,\n    medium: 768,\n    large: 1440,\n    xlarge: 2560,\n    huge: Infinity\n  };\n  /**\n   * An instance of the `Player` class is created when any of the Video.js setup methods\n   * are used to initialize a video.\n   *\n   * After an instance has been created it can be accessed globally in two ways:\n   * 1. By calling `videojs('example_video_1');`\n   * 2. By using it directly via  `videojs.players.example_video_1;`\n   *\n   * @extends Component\n   */\n\n  var Player =\n  /*#__PURE__*/\n  function (_Component) {\n    _inheritsLoose(Player, _Component);\n\n    /**\n     * Create an instance of this class.\n     *\n     * @param {Element} tag\n     *        The original video DOM element used for configuring options.\n     *\n     * @param {Object} [options]\n     *        Object of option names and values.\n     *\n     * @param {Component~ReadyCallback} [ready]\n     *        Ready callback function.\n     */\n    function Player(tag, options, ready) {\n      var _this;\n\n      // Make sure tag ID exists\n      tag.id = tag.id || options.id || \"vjs_video_\" + newGUID(); // Set Options\n      // The options argument overrides options set in the video tag\n      // which overrides globally set options.\n      // This latter part coincides with the load order\n      // (tag must exist before Player)\n\n      options = assign(Player.getTagSettings(tag), options); // Delay the initialization of children because we need to set up\n      // player properties first, and can't use `this` before `super()`\n\n      options.initChildren = false; // Same with creating the element\n\n      options.createEl = false; // don't auto mixin the evented mixin\n\n      options.evented = false; // we don't want the player to report touch activity on itself\n      // see enableTouchActivity in Component\n\n      options.reportTouchActivity = false; // If language is not set, get the closest lang attribute\n\n      if (!options.language) {\n        if (typeof tag.closest === 'function') {\n          var closest = tag.closest('[lang]');\n\n          if (closest && closest.getAttribute) {\n            options.language = closest.getAttribute('lang');\n          }\n        } else {\n          var element = tag;\n\n          while (element && element.nodeType === 1) {\n            if (getAttributes(element).hasOwnProperty('lang')) {\n              options.language = element.getAttribute('lang');\n              break;\n            }\n\n            element = element.parentNode;\n          }\n        }\n      } // Run base component initializing with new options\n\n\n      _this = _Component.call(this, null, options, ready) || this; // create logger\n\n      _this.log = createLogger$1(_this.id_); // Tracks when a tech changes the poster\n\n      _this.isPosterFromTech_ = false; // Holds callback info that gets queued when playback rate is zero\n      // and a seek is happening\n\n      _this.queuedCallbacks_ = []; // Turn off API access because we're loading a new tech that might load asynchronously\n\n      _this.isReady_ = false; // Init state hasStarted_\n\n      _this.hasStarted_ = false; // Init state userActive_\n\n      _this.userActive_ = false; // if the global option object was accidentally blown away by\n      // someone, bail early with an informative error\n\n      if (!_this.options_ || !_this.options_.techOrder || !_this.options_.techOrder.length) {\n        throw new Error('No techOrder specified. Did you overwrite ' + 'videojs.options instead of just changing the ' + 'properties you want to override?');\n      } // Store the original tag used to set options\n\n\n      _this.tag = tag; // Store the tag attributes used to restore html5 element\n\n      _this.tagAttributes = tag && getAttributes(tag); // Update current language\n\n      _this.language(_this.options_.language); // Update Supported Languages\n\n\n      if (options.languages) {\n        // Normalise player option languages to lowercase\n        var languagesToLower = {};\n        Object.getOwnPropertyNames(options.languages).forEach(function (name$$1) {\n          languagesToLower[name$$1.toLowerCase()] = options.languages[name$$1];\n        });\n        _this.languages_ = languagesToLower;\n      } else {\n        _this.languages_ = Player.prototype.options_.languages;\n      }\n\n      _this.resetCache_(); // Set poster\n\n\n      _this.poster_ = options.poster || ''; // Set controls\n\n      _this.controls_ = !!options.controls; // Original tag settings stored in options\n      // now remove immediately so native controls don't flash.\n      // May be turned back on by HTML5 tech if nativeControlsForTouch is true\n\n      tag.controls = false;\n      tag.removeAttribute('controls'); // the attribute overrides the option\n\n      if (tag.hasAttribute('autoplay')) {\n        _this.options_.autoplay = true;\n      } else {\n        // otherwise use the setter to validate and\n        // set the correct value.\n        _this.autoplay(_this.options_.autoplay);\n      }\n      /*\n       * Store the internal state of scrubbing\n       *\n       * @private\n       * @return {Boolean} True if the user is scrubbing\n       */\n\n\n      _this.scrubbing_ = false;\n      _this.el_ = _this.createEl(); // Make this an evented object and use `el_` as its event bus.\n\n      evented(_assertThisInitialized(_assertThisInitialized(_this)), {\n        eventBusKey: 'el_'\n      });\n\n      if (_this.fluid_) {\n        _this.on('playerreset', _this.updateStyleEl_);\n      } // We also want to pass the original player options to each component and plugin\n      // as well so they don't need to reach back into the player for options later.\n      // We also need to do another copy of this.options_ so we don't end up with\n      // an infinite loop.\n\n\n      var playerOptionsCopy = mergeOptions(_this.options_); // Load plugins\n\n      if (options.plugins) {\n        var plugins = options.plugins;\n        Object.keys(plugins).forEach(function (name$$1) {\n          if (typeof this[name$$1] === 'function') {\n            this[name$$1](plugins[name$$1]);\n          } else {\n            throw new Error(\"plugin \\\"\" + name$$1 + \"\\\" does not exist\");\n          }\n        }, _assertThisInitialized(_assertThisInitialized(_this)));\n      }\n\n      _this.options_.playerOptions = playerOptionsCopy;\n      _this.middleware_ = [];\n\n      _this.initChildren(); // Set isAudio based on whether or not an audio tag was used\n\n\n      _this.isAudio(tag.nodeName.toLowerCase() === 'audio'); // Update controls className. Can't do this when the controls are initially\n      // set because the element doesn't exist yet.\n\n\n      if (_this.controls()) {\n        _this.addClass('vjs-controls-enabled');\n      } else {\n        _this.addClass('vjs-controls-disabled');\n      } // Set ARIA label and region role depending on player type\n\n\n      _this.el_.setAttribute('role', 'region');\n\n      if (_this.isAudio()) {\n        _this.el_.setAttribute('aria-label', _this.localize('Audio Player'));\n      } else {\n        _this.el_.setAttribute('aria-label', _this.localize('Video Player'));\n      }\n\n      if (_this.isAudio()) {\n        _this.addClass('vjs-audio');\n      }\n\n      if (_this.flexNotSupported_()) {\n        _this.addClass('vjs-no-flex');\n      } // TODO: Make this smarter. Toggle user state between touching/mousing\n      // using events, since devices can have both touch and mouse events.\n      // TODO: Make this check be performed again when the window switches between monitors\n      // (See https://github.com/videojs/video.js/issues/5683)\n\n\n      if (TOUCH_ENABLED) {\n        _this.addClass('vjs-touch-enabled');\n      } // iOS Safari has broken hover handling\n\n\n      if (!IS_IOS) {\n        _this.addClass('vjs-workinghover');\n      } // Make player easily findable by ID\n\n\n      Player.players[_this.id_] = _assertThisInitialized(_assertThisInitialized(_this)); // Add a major version class to aid css in plugins\n\n      var majorVersion = version.split('.')[0];\n\n      _this.addClass(\"vjs-v\" + majorVersion); // When the player is first initialized, trigger activity so components\n      // like the control bar show themselves if needed\n\n\n      _this.userActive(true);\n\n      _this.reportUserActivity();\n\n      _this.one('play', _this.listenForUserActivity_);\n\n      _this.on('focus', _this.handleFocus);\n\n      _this.on('blur', _this.handleBlur);\n\n      _this.on('stageclick', _this.handleStageClick_);\n\n      _this.breakpoints(_this.options_.breakpoints);\n\n      _this.responsive(_this.options_.responsive);\n\n      _this.changingSrc_ = false;\n      _this.playWaitingForReady_ = false;\n      _this.playOnLoadstart_ = null;\n      return _this;\n    }\n    /**\n     * Destroys the video player and does any necessary cleanup.\n     *\n     * This is especially helpful if you are dynamically adding and removing videos\n     * to/from the DOM.\n     *\n     * @fires Player#dispose\n     */\n\n\n    var _proto = Player.prototype;\n\n    _proto.dispose = function dispose() {\n      /**\n       * Called when the player is being disposed of.\n       *\n       * @event Player#dispose\n       * @type {EventTarget~Event}\n       */\n      this.trigger('dispose'); // prevent dispose from being called twice\n\n      this.off('dispose');\n\n      if (this.styleEl_ && this.styleEl_.parentNode) {\n        this.styleEl_.parentNode.removeChild(this.styleEl_);\n        this.styleEl_ = null;\n      } // Kill reference to this player\n\n\n      Player.players[this.id_] = null;\n\n      if (this.tag && this.tag.player) {\n        this.tag.player = null;\n      }\n\n      if (this.el_ && this.el_.player) {\n        this.el_.player = null;\n      }\n\n      if (this.tech_) {\n        this.tech_.dispose();\n        this.isPosterFromTech_ = false;\n        this.poster_ = '';\n      }\n\n      if (this.playerElIngest_) {\n        this.playerElIngest_ = null;\n      }\n\n      if (this.tag) {\n        this.tag = null;\n      }\n\n      clearCacheForPlayer(this); // the actual .el_ is removed here\n\n      _Component.prototype.dispose.call(this);\n    }\n    /**\n     * Create the `Player`'s DOM element.\n     *\n     * @return {Element}\n     *         The DOM element that gets created.\n     */\n    ;\n\n    _proto.createEl = function createEl$$1() {\n      var tag = this.tag;\n      var el;\n      var playerElIngest = this.playerElIngest_ = tag.parentNode && tag.parentNode.hasAttribute && tag.parentNode.hasAttribute('data-vjs-player');\n      var divEmbed = this.tag.tagName.toLowerCase() === 'video-js';\n\n      if (playerElIngest) {\n        el = this.el_ = tag.parentNode;\n      } else if (!divEmbed) {\n        el = this.el_ = _Component.prototype.createEl.call(this, 'div');\n      } // Copy over all the attributes from the tag, including ID and class\n      // ID will now reference player box, not the video tag\n\n\n      var attrs = getAttributes(tag);\n\n      if (divEmbed) {\n        el = this.el_ = tag;\n        tag = this.tag = document.createElement('video');\n\n        while (el.children.length) {\n          tag.appendChild(el.firstChild);\n        }\n\n        if (!hasClass(el, 'video-js')) {\n          addClass(el, 'video-js');\n        }\n\n        el.appendChild(tag);\n        playerElIngest = this.playerElIngest_ = el; // move properties over from our custom `video-js` element\n        // to our new `video` element. This will move things like\n        // `src` or `controls` that were set via js before the player\n        // was initialized.\n\n        Object.keys(el).forEach(function (k) {\n          tag[k] = el[k];\n        });\n      } // set tabindex to -1 to remove the video element from the focus order\n\n\n      tag.setAttribute('tabindex', '-1');\n      attrs.tabindex = '-1'; // Workaround for #4583 (JAWS+IE doesn't announce BPB or play button)\n      // See https://github.com/FreedomScientific/VFO-standards-support/issues/78\n      // Note that we can't detect if JAWS is being used, but this ARIA attribute\n      //  doesn't change behavior of IE11 if JAWS is not being used\n\n      if (IE_VERSION) {\n        tag.setAttribute('role', 'application');\n        attrs.role = 'application';\n      } // Remove width/height attrs from tag so CSS can make it 100% width/height\n\n\n      tag.removeAttribute('width');\n      tag.removeAttribute('height');\n\n      if ('width' in attrs) {\n        delete attrs.width;\n      }\n\n      if ('height' in attrs) {\n        delete attrs.height;\n      }\n\n      Object.getOwnPropertyNames(attrs).forEach(function (attr) {\n        // don't copy over the class attribute to the player element when we're in a div embed\n        // the class is already set up properly in the divEmbed case\n        // and we want to make sure that the `video-js` class doesn't get lost\n        if (!(divEmbed && attr === 'class')) {\n          el.setAttribute(attr, attrs[attr]);\n        }\n\n        if (divEmbed) {\n          tag.setAttribute(attr, attrs[attr]);\n        }\n      }); // Update tag id/class for use as HTML5 playback tech\n      // Might think we should do this after embedding in container so .vjs-tech class\n      // doesn't flash 100% width/height, but class only applies with .video-js parent\n\n      tag.playerId = tag.id;\n      tag.id += '_html5_api';\n      tag.className = 'vjs-tech'; // Make player findable on elements\n\n      tag.player = el.player = this; // Default state of video is paused\n\n      this.addClass('vjs-paused'); // Add a style element in the player that we'll use to set the width/height\n      // of the player in a way that's still overrideable by CSS, just like the\n      // video element\n\n      if (window$1.VIDEOJS_NO_DYNAMIC_STYLE !== true) {\n        this.styleEl_ = createStyleElement('vjs-styles-dimensions');\n        var defaultsStyleEl = $('.vjs-styles-defaults');\n        var head = $('head');\n        head.insertBefore(this.styleEl_, defaultsStyleEl ? defaultsStyleEl.nextSibling : head.firstChild);\n      }\n\n      this.fill_ = false;\n      this.fluid_ = false; // Pass in the width/height/aspectRatio options which will update the style el\n\n      this.width(this.options_.width);\n      this.height(this.options_.height);\n      this.fill(this.options_.fill);\n      this.fluid(this.options_.fluid);\n      this.aspectRatio(this.options_.aspectRatio); // Hide any links within the video/audio tag,\n      // because IE doesn't hide them completely from screen readers.\n\n      var links = tag.getElementsByTagName('a');\n\n      for (var i = 0; i < links.length; i++) {\n        var linkEl = links.item(i);\n        addClass(linkEl, 'vjs-hidden');\n        linkEl.setAttribute('hidden', 'hidden');\n      } // insertElFirst seems to cause the networkState to flicker from 3 to 2, so\n      // keep track of the original for later so we can know if the source originally failed\n\n\n      tag.initNetworkState_ = tag.networkState; // Wrap video tag in div (el/box) container\n\n      if (tag.parentNode && !playerElIngest) {\n        tag.parentNode.insertBefore(el, tag);\n      } // insert the tag as the first child of the player element\n      // then manually add it to the children array so that this.addChild\n      // will work properly for other components\n      //\n      // Breaks iPhone, fixed in HTML5 setup.\n\n\n      prependTo(tag, el);\n      this.children_.unshift(tag); // Set lang attr on player to ensure CSS :lang() in consistent with player\n      // if it's been set to something different to the doc\n\n      this.el_.setAttribute('lang', this.language_);\n      this.el_ = el;\n      return el;\n    }\n    /**\n     * A getter/setter for the `Player`'s width. Returns the player's configured value.\n     * To get the current width use `currentWidth()`.\n     *\n     * @param {number} [value]\n     *        The value to set the `Player`'s width to.\n     *\n     * @return {number}\n     *         The current width of the `Player` when getting.\n     */\n    ;\n\n    _proto.width = function width(value) {\n      return this.dimension('width', value);\n    }\n    /**\n     * A getter/setter for the `Player`'s height. Returns the player's configured value.\n     * To get the current height use `currentheight()`.\n     *\n     * @param {number} [value]\n     *        The value to set the `Player`'s heigth to.\n     *\n     * @return {number}\n     *         The current height of the `Player` when getting.\n     */\n    ;\n\n    _proto.height = function height(value) {\n      return this.dimension('height', value);\n    }\n    /**\n     * A getter/setter for the `Player`'s width & height.\n     *\n     * @param {string} dimension\n     *        This string can be:\n     *        - 'width'\n     *        - 'height'\n     *\n     * @param {number} [value]\n     *        Value for dimension specified in the first argument.\n     *\n     * @return {number}\n     *         The dimension arguments value when getting (width/height).\n     */\n    ;\n\n    _proto.dimension = function dimension(_dimension, value) {\n      var privDimension = _dimension + '_';\n\n      if (value === undefined) {\n        return this[privDimension] || 0;\n      }\n\n      if (value === '') {\n        // If an empty string is given, reset the dimension to be automatic\n        this[privDimension] = undefined;\n        this.updateStyleEl_();\n        return;\n      }\n\n      var parsedVal = parseFloat(value);\n\n      if (isNaN(parsedVal)) {\n        log.error(\"Improper value \\\"\" + value + \"\\\" supplied for for \" + _dimension);\n        return;\n      }\n\n      this[privDimension] = parsedVal;\n      this.updateStyleEl_();\n    }\n    /**\n     * A getter/setter/toggler for the vjs-fluid `className` on the `Player`.\n     *\n     * Turning this on will turn off fill mode.\n     *\n     * @param {boolean} [bool]\n     *        - A value of true adds the class.\n     *        - A value of false removes the class.\n     *        - No value will be a getter.\n     *\n     * @return {boolean|undefined}\n     *         - The value of fluid when getting.\n     *         - `undefined` when setting.\n     */\n    ;\n\n    _proto.fluid = function fluid(bool) {\n      if (bool === undefined) {\n        return !!this.fluid_;\n      }\n\n      this.fluid_ = !!bool;\n\n      if (isEvented(this)) {\n        this.off('playerreset', this.updateStyleEl_);\n      }\n\n      if (bool) {\n        this.addClass('vjs-fluid');\n        this.fill(false);\n        addEventedCallback(function () {\n          this.on('playerreset', this.updateStyleEl_);\n        });\n      } else {\n        this.removeClass('vjs-fluid');\n      }\n\n      this.updateStyleEl_();\n    }\n    /**\n     * A getter/setter/toggler for the vjs-fill `className` on the `Player`.\n     *\n     * Turning this on will turn off fluid mode.\n     *\n     * @param {boolean} [bool]\n     *        - A value of true adds the class.\n     *        - A value of false removes the class.\n     *        - No value will be a getter.\n     *\n     * @return {boolean|undefined}\n     *         - The value of fluid when getting.\n     *         - `undefined` when setting.\n     */\n    ;\n\n    _proto.fill = function fill(bool) {\n      if (bool === undefined) {\n        return !!this.fill_;\n      }\n\n      this.fill_ = !!bool;\n\n      if (bool) {\n        this.addClass('vjs-fill');\n        this.fluid(false);\n      } else {\n        this.removeClass('vjs-fill');\n      }\n    }\n    /**\n     * Get/Set the aspect ratio\n     *\n     * @param {string} [ratio]\n     *        Aspect ratio for player\n     *\n     * @return {string|undefined}\n     *         returns the current aspect ratio when getting\n     */\n\n    /**\n     * A getter/setter for the `Player`'s aspect ratio.\n     *\n     * @param {string} [ratio]\n     *        The value to set the `Player's aspect ratio to.\n     *\n     * @return {string|undefined}\n     *         - The current aspect ratio of the `Player` when getting.\n     *         - undefined when setting\n     */\n    ;\n\n    _proto.aspectRatio = function aspectRatio(ratio) {\n      if (ratio === undefined) {\n        return this.aspectRatio_;\n      } // Check for width:height format\n\n\n      if (!/^\\d+\\:\\d+$/.test(ratio)) {\n        throw new Error('Improper value supplied for aspect ratio. The format should be width:height, for example 16:9.');\n      }\n\n      this.aspectRatio_ = ratio; // We're assuming if you set an aspect ratio you want fluid mode,\n      // because in fixed mode you could calculate width and height yourself.\n\n      this.fluid(true);\n      this.updateStyleEl_();\n    }\n    /**\n     * Update styles of the `Player` element (height, width and aspect ratio).\n     *\n     * @private\n     * @listens Tech#loadedmetadata\n     */\n    ;\n\n    _proto.updateStyleEl_ = function updateStyleEl_() {\n      if (window$1.VIDEOJS_NO_DYNAMIC_STYLE === true) {\n        var _width = typeof this.width_ === 'number' ? this.width_ : this.options_.width;\n\n        var _height = typeof this.height_ === 'number' ? this.height_ : this.options_.height;\n\n        var techEl = this.tech_ && this.tech_.el();\n\n        if (techEl) {\n          if (_width >= 0) {\n            techEl.width = _width;\n          }\n\n          if (_height >= 0) {\n            techEl.height = _height;\n          }\n        }\n\n        return;\n      }\n\n      var width;\n      var height;\n      var aspectRatio;\n      var idClass; // The aspect ratio is either used directly or to calculate width and height.\n\n      if (this.aspectRatio_ !== undefined && this.aspectRatio_ !== 'auto') {\n        // Use any aspectRatio that's been specifically set\n        aspectRatio = this.aspectRatio_;\n      } else if (this.videoWidth() > 0) {\n        // Otherwise try to get the aspect ratio from the video metadata\n        aspectRatio = this.videoWidth() + ':' + this.videoHeight();\n      } else {\n        // Or use a default. The video element's is 2:1, but 16:9 is more common.\n        aspectRatio = '16:9';\n      } // Get the ratio as a decimal we can use to calculate dimensions\n\n\n      var ratioParts = aspectRatio.split(':');\n      var ratioMultiplier = ratioParts[1] / ratioParts[0];\n\n      if (this.width_ !== undefined) {\n        // Use any width that's been specifically set\n        width = this.width_;\n      } else if (this.height_ !== undefined) {\n        // Or calulate the width from the aspect ratio if a height has been set\n        width = this.height_ / ratioMultiplier;\n      } else {\n        // Or use the video's metadata, or use the video el's default of 300\n        width = this.videoWidth() || 300;\n      }\n\n      if (this.height_ !== undefined) {\n        // Use any height that's been specifically set\n        height = this.height_;\n      } else {\n        // Otherwise calculate the height from the ratio and the width\n        height = width * ratioMultiplier;\n      } // Ensure the CSS class is valid by starting with an alpha character\n\n\n      if (/^[^a-zA-Z]/.test(this.id())) {\n        idClass = 'dimensions-' + this.id();\n      } else {\n        idClass = this.id() + '-dimensions';\n      } // Ensure the right class is still on the player for the style element\n\n\n      this.addClass(idClass);\n      setTextContent(this.styleEl_, \"\\n      .\" + idClass + \" {\\n        width: \" + width + \"px;\\n        height: \" + height + \"px;\\n      }\\n\\n      .\" + idClass + \".vjs-fluid {\\n        padding-top: \" + ratioMultiplier * 100 + \"%;\\n      }\\n    \");\n    }\n    /**\n     * Load/Create an instance of playback {@link Tech} including element\n     * and API methods. Then append the `Tech` element in `Player` as a child.\n     *\n     * @param {string} techName\n     *        name of the playback technology\n     *\n     * @param {string} source\n     *        video source\n     *\n     * @private\n     */\n    ;\n\n    _proto.loadTech_ = function loadTech_(techName, source) {\n      var _this2 = this;\n\n      // Pause and remove current playback technology\n      if (this.tech_) {\n        this.unloadTech_();\n      }\n\n      var titleTechName = toTitleCase(techName);\n      var camelTechName = techName.charAt(0).toLowerCase() + techName.slice(1); // get rid of the HTML5 video tag as soon as we are using another tech\n\n      if (titleTechName !== 'Html5' && this.tag) {\n        Tech.getTech('Html5').disposeMediaElement(this.tag);\n        this.tag.player = null;\n        this.tag = null;\n      }\n\n      this.techName_ = titleTechName; // Turn off API access because we're loading a new tech that might load asynchronously\n\n      this.isReady_ = false; // if autoplay is a string we pass false to the tech\n      // because the player is going to handle autoplay on `loadstart`\n\n      var autoplay = typeof this.autoplay() === 'string' ? false : this.autoplay(); // Grab tech-specific options from player options and add source and parent element to use.\n\n      var techOptions = {\n        source: source,\n        autoplay: autoplay,\n        'nativeControlsForTouch': this.options_.nativeControlsForTouch,\n        'playerId': this.id(),\n        'techId': this.id() + \"_\" + camelTechName + \"_api\",\n        'playsinline': this.options_.playsinline,\n        'preload': this.options_.preload,\n        'loop': this.options_.loop,\n        'muted': this.options_.muted,\n        'poster': this.poster(),\n        'language': this.language(),\n        'playerElIngest': this.playerElIngest_ || false,\n        'vtt.js': this.options_['vtt.js'],\n        'canOverridePoster': !!this.options_.techCanOverridePoster,\n        'enableSourceset': this.options_.enableSourceset\n      };\n      ALL.names.forEach(function (name$$1) {\n        var props = ALL[name$$1];\n        techOptions[props.getterName] = _this2[props.privateName];\n      });\n      assign(techOptions, this.options_[titleTechName]);\n      assign(techOptions, this.options_[camelTechName]);\n      assign(techOptions, this.options_[techName.toLowerCase()]);\n\n      if (this.tag) {\n        techOptions.tag = this.tag;\n      }\n\n      if (source && source.src === this.cache_.src && this.cache_.currentTime > 0) {\n        techOptions.startTime = this.cache_.currentTime;\n      } // Initialize tech instance\n\n\n      var TechClass = Tech.getTech(techName);\n\n      if (!TechClass) {\n        throw new Error(\"No Tech named '\" + titleTechName + \"' exists! '\" + titleTechName + \"' should be registered using videojs.registerTech()'\");\n      }\n\n      this.tech_ = new TechClass(techOptions); // player.triggerReady is always async, so don't need this to be async\n\n      this.tech_.ready(bind(this, this.handleTechReady_), true);\n      textTrackConverter.jsonToTextTracks(this.textTracksJson_ || [], this.tech_); // Listen to all HTML5-defined events and trigger them on the player\n\n      TECH_EVENTS_RETRIGGER.forEach(function (event) {\n        _this2.on(_this2.tech_, event, _this2[\"handleTech\" + toTitleCase(event) + \"_\"]);\n      });\n      Object.keys(TECH_EVENTS_QUEUE).forEach(function (event) {\n        _this2.on(_this2.tech_, event, function (eventObj) {\n          if (_this2.tech_.playbackRate() === 0 && _this2.tech_.seeking()) {\n            _this2.queuedCallbacks_.push({\n              callback: _this2[\"handleTech\" + TECH_EVENTS_QUEUE[event] + \"_\"].bind(_this2),\n              event: eventObj\n            });\n\n            return;\n          }\n\n          _this2[\"handleTech\" + TECH_EVENTS_QUEUE[event] + \"_\"](eventObj);\n        });\n      });\n      this.on(this.tech_, 'loadstart', this.handleTechLoadStart_);\n      this.on(this.tech_, 'sourceset', this.handleTechSourceset_);\n      this.on(this.tech_, 'waiting', this.handleTechWaiting_);\n      this.on(this.tech_, 'ended', this.handleTechEnded_);\n      this.on(this.tech_, 'seeking', this.handleTechSeeking_);\n      this.on(this.tech_, 'play', this.handleTechPlay_);\n      this.on(this.tech_, 'firstplay', this.handleTechFirstPlay_);\n      this.on(this.tech_, 'pause', this.handleTechPause_);\n      this.on(this.tech_, 'durationchange', this.handleTechDurationChange_);\n      this.on(this.tech_, 'fullscreenchange', this.handleTechFullscreenChange_);\n      this.on(this.tech_, 'error', this.handleTechError_);\n      this.on(this.tech_, 'loadedmetadata', this.updateStyleEl_);\n      this.on(this.tech_, 'posterchange', this.handleTechPosterChange_);\n      this.on(this.tech_, 'textdata', this.handleTechTextData_);\n      this.on(this.tech_, 'ratechange', this.handleTechRateChange_);\n      this.usingNativeControls(this.techGet_('controls'));\n\n      if (this.controls() && !this.usingNativeControls()) {\n        this.addTechControlsListeners_();\n      } // Add the tech element in the DOM if it was not already there\n      // Make sure to not insert the original video element if using Html5\n\n\n      if (this.tech_.el().parentNode !== this.el() && (titleTechName !== 'Html5' || !this.tag)) {\n        prependTo(this.tech_.el(), this.el());\n      } // Get rid of the original video tag reference after the first tech is loaded\n\n\n      if (this.tag) {\n        this.tag.player = null;\n        this.tag = null;\n      }\n    }\n    /**\n     * Unload and dispose of the current playback {@link Tech}.\n     *\n     * @private\n     */\n    ;\n\n    _proto.unloadTech_ = function unloadTech_() {\n      var _this3 = this;\n\n      // Save the current text tracks so that we can reuse the same text tracks with the next tech\n      ALL.names.forEach(function (name$$1) {\n        var props = ALL[name$$1];\n        _this3[props.privateName] = _this3[props.getterName]();\n      });\n      this.textTracksJson_ = textTrackConverter.textTracksToJson(this.tech_);\n      this.isReady_ = false;\n      this.tech_.dispose();\n      this.tech_ = false;\n\n      if (this.isPosterFromTech_) {\n        this.poster_ = '';\n        this.trigger('posterchange');\n      }\n\n      this.isPosterFromTech_ = false;\n    }\n    /**\n     * Return a reference to the current {@link Tech}.\n     * It will print a warning by default about the danger of using the tech directly\n     * but any argument that is passed in will silence the warning.\n     *\n     * @param {*} [safety]\n     *        Anything passed in to silence the warning\n     *\n     * @return {Tech}\n     *         The Tech\n     */\n    ;\n\n    _proto.tech = function tech(safety) {\n      if (safety === undefined) {\n        log.warn(tsml(_templateObject$2()));\n      }\n\n      return this.tech_;\n    }\n    /**\n     * Set up click and touch listeners for the playback element\n     *\n     * - On desktops: a click on the video itself will toggle playback\n     * - On mobile devices: a click on the video toggles controls\n     *   which is done by toggling the user state between active and\n     *   inactive\n     * - A tap can signal that a user has become active or has become inactive\n     *   e.g. a quick tap on an iPhone movie should reveal the controls. Another\n     *   quick tap should hide them again (signaling the user is in an inactive\n     *   viewing state)\n     * - In addition to this, we still want the user to be considered inactive after\n     *   a few seconds of inactivity.\n     *\n     * > Note: the only part of iOS interaction we can't mimic with this setup\n     * is a touch and hold on the video element counting as activity in order to\n     * keep the controls showing, but that shouldn't be an issue. A touch and hold\n     * on any controls will still keep the user active\n     *\n     * @private\n     */\n    ;\n\n    _proto.addTechControlsListeners_ = function addTechControlsListeners_() {\n      // Make sure to remove all the previous listeners in case we are called multiple times.\n      this.removeTechControlsListeners_(); // Some browsers (Chrome & IE) don't trigger a click on a flash swf, but do\n      // trigger mousedown/up.\n      // http://stackoverflow.com/questions/1444562/javascript-onclick-event-over-flash-object\n      // Any touch events are set to block the mousedown event from happening\n\n      this.on(this.tech_, 'mousedown', this.handleTechClick_);\n      this.on(this.tech_, 'dblclick', this.handleTechDoubleClick_); // If the controls were hidden we don't want that to change without a tap event\n      // so we'll check if the controls were already showing before reporting user\n      // activity\n\n      this.on(this.tech_, 'touchstart', this.handleTechTouchStart_);\n      this.on(this.tech_, 'touchmove', this.handleTechTouchMove_);\n      this.on(this.tech_, 'touchend', this.handleTechTouchEnd_); // The tap listener needs to come after the touchend listener because the tap\n      // listener cancels out any reportedUserActivity when setting userActive(false)\n\n      this.on(this.tech_, 'tap', this.handleTechTap_);\n    }\n    /**\n     * Remove the listeners used for click and tap controls. This is needed for\n     * toggling to controls disabled, where a tap/touch should do nothing.\n     *\n     * @private\n     */\n    ;\n\n    _proto.removeTechControlsListeners_ = function removeTechControlsListeners_() {\n      // We don't want to just use `this.off()` because there might be other needed\n      // listeners added by techs that extend this.\n      this.off(this.tech_, 'tap', this.handleTechTap_);\n      this.off(this.tech_, 'touchstart', this.handleTechTouchStart_);\n      this.off(this.tech_, 'touchmove', this.handleTechTouchMove_);\n      this.off(this.tech_, 'touchend', this.handleTechTouchEnd_);\n      this.off(this.tech_, 'mousedown', this.handleTechClick_);\n      this.off(this.tech_, 'dblclick', this.handleTechDoubleClick_);\n    }\n    /**\n     * Player waits for the tech to be ready\n     *\n     * @private\n     */\n    ;\n\n    _proto.handleTechReady_ = function handleTechReady_() {\n      this.triggerReady(); // Keep the same volume as before\n\n      if (this.cache_.volume) {\n        this.techCall_('setVolume', this.cache_.volume);\n      } // Look if the tech found a higher resolution poster while loading\n\n\n      this.handleTechPosterChange_(); // Update the duration if available\n\n      this.handleTechDurationChange_();\n    }\n    /**\n     * Retrigger the `loadstart` event that was triggered by the {@link Tech}. This\n     * function will also trigger {@link Player#firstplay} if it is the first loadstart\n     * for a video.\n     *\n     * @fires Player#loadstart\n     * @fires Player#firstplay\n     * @listens Tech#loadstart\n     * @private\n     */\n    ;\n\n    _proto.handleTechLoadStart_ = function handleTechLoadStart_() {\n      // TODO: Update to use `emptied` event instead. See #1277.\n      this.removeClass('vjs-ended');\n      this.removeClass('vjs-seeking'); // reset the error state\n\n      this.error(null); // Update the duration\n\n      this.handleTechDurationChange_(); // If it's already playing we want to trigger a firstplay event now.\n      // The firstplay event relies on both the play and loadstart events\n      // which can happen in any order for a new source\n\n      if (!this.paused()) {\n        /**\n         * Fired when the user agent begins looking for media data\n         *\n         * @event Player#loadstart\n         * @type {EventTarget~Event}\n         */\n        this.trigger('loadstart');\n        this.trigger('firstplay');\n      } else {\n        // reset the hasStarted state\n        this.hasStarted(false);\n        this.trigger('loadstart');\n      } // autoplay happens after loadstart for the browser,\n      // so we mimic that behavior\n\n\n      this.manualAutoplay_(this.autoplay());\n    }\n    /**\n     * Handle autoplay string values, rather than the typical boolean\n     * values that should be handled by the tech. Note that this is not\n     * part of any specification. Valid values and what they do can be\n     * found on the autoplay getter at Player#autoplay()\n     */\n    ;\n\n    _proto.manualAutoplay_ = function manualAutoplay_(type) {\n      var _this4 = this;\n\n      if (!this.tech_ || typeof type !== 'string') {\n        return;\n      }\n\n      var muted = function muted() {\n        var previouslyMuted = _this4.muted();\n\n        _this4.muted(true);\n\n        var playPromise = _this4.play();\n\n        if (!playPromise || !playPromise.then || !playPromise.catch) {\n          return;\n        }\n\n        return playPromise.catch(function (e) {\n          // restore old value of muted on failure\n          _this4.muted(previouslyMuted);\n        });\n      };\n\n      var promise;\n\n      if (type === 'any') {\n        promise = this.play();\n\n        if (promise && promise.then && promise.catch) {\n          promise.catch(function () {\n            return muted();\n          });\n        }\n      } else if (type === 'muted') {\n        promise = muted();\n      } else {\n        promise = this.play();\n      }\n\n      if (!promise || !promise.then || !promise.catch) {\n        return;\n      }\n\n      return promise.then(function () {\n        _this4.trigger({\n          type: 'autoplay-success',\n          autoplay: type\n        });\n      }).catch(function (e) {\n        _this4.trigger({\n          type: 'autoplay-failure',\n          autoplay: type\n        });\n      });\n    }\n    /**\n     * Update the internal source caches so that we return the correct source from\n     * `src()`, `currentSource()`, and `currentSources()`.\n     *\n     * > Note: `currentSources` will not be updated if the source that is passed in exists\n     *         in the current `currentSources` cache.\n     *\n     *\n     * @param {Tech~SourceObject} srcObj\n     *        A string or object source to update our caches to.\n     */\n    ;\n\n    _proto.updateSourceCaches_ = function updateSourceCaches_(srcObj) {\n      if (srcObj === void 0) {\n        srcObj = '';\n      }\n\n      var src = srcObj;\n      var type = '';\n\n      if (typeof src !== 'string') {\n        src = srcObj.src;\n        type = srcObj.type;\n      } // make sure all the caches are set to default values\n      // to prevent null checking\n\n\n      this.cache_.source = this.cache_.source || {};\n      this.cache_.sources = this.cache_.sources || []; // try to get the type of the src that was passed in\n\n      if (src && !type) {\n        type = findMimetype(this, src);\n      } // update `currentSource` cache always\n\n\n      this.cache_.source = mergeOptions({}, srcObj, {\n        src: src,\n        type: type\n      });\n      var matchingSources = this.cache_.sources.filter(function (s) {\n        return s.src && s.src === src;\n      });\n      var sourceElSources = [];\n      var sourceEls = this.$$('source');\n      var matchingSourceEls = [];\n\n      for (var i = 0; i < sourceEls.length; i++) {\n        var sourceObj = getAttributes(sourceEls[i]);\n        sourceElSources.push(sourceObj);\n\n        if (sourceObj.src && sourceObj.src === src) {\n          matchingSourceEls.push(sourceObj.src);\n        }\n      } // if we have matching source els but not matching sources\n      // the current source cache is not up to date\n\n\n      if (matchingSourceEls.length && !matchingSources.length) {\n        this.cache_.sources = sourceElSources; // if we don't have matching source or source els set the\n        // sources cache to the `currentSource` cache\n      } else if (!matchingSources.length) {\n        this.cache_.sources = [this.cache_.source];\n      } // update the tech `src` cache\n\n\n      this.cache_.src = src;\n    }\n    /**\n     * *EXPERIMENTAL* Fired when the source is set or changed on the {@link Tech}\n     * causing the media element to reload.\n     *\n     * It will fire for the initial source and each subsequent source.\n     * This event is a custom event from Video.js and is triggered by the {@link Tech}.\n     *\n     * The event object for this event contains a `src` property that will contain the source\n     * that was available when the event was triggered. This is generally only necessary if Video.js\n     * is switching techs while the source was being changed.\n     *\n     * It is also fired when `load` is called on the player (or media element)\n     * because the {@link https://html.spec.whatwg.org/multipage/media.html#dom-media-load|specification for `load`}\n     * says that the resource selection algorithm needs to be aborted and restarted.\n     * In this case, it is very likely that the `src` property will be set to the\n     * empty string `\"\"` to indicate we do not know what the source will be but\n     * that it is changing.\n     *\n     * *This event is currently still experimental and may change in minor releases.*\n     * __To use this, pass `enableSourceset` option to the player.__\n     *\n     * @event Player#sourceset\n     * @type {EventTarget~Event}\n     * @prop {string} src\n     *                The source url available when the `sourceset` was triggered.\n     *                It will be an empty string if we cannot know what the source is\n     *                but know that the source will change.\n     */\n\n    /**\n     * Retrigger the `sourceset` event that was triggered by the {@link Tech}.\n     *\n     * @fires Player#sourceset\n     * @listens Tech#sourceset\n     * @private\n     */\n    ;\n\n    _proto.handleTechSourceset_ = function handleTechSourceset_(event) {\n      var _this5 = this;\n\n      // only update the source cache when the source\n      // was not updated using the player api\n      if (!this.changingSrc_) {\n        var updateSourceCaches = function updateSourceCaches(src) {\n          return _this5.updateSourceCaches_(src);\n        };\n\n        var playerSrc = this.currentSource().src;\n        var eventSrc = event.src; // if we have a playerSrc that is not a blob, and a tech src that is a blob\n\n        if (playerSrc && !/^blob:/.test(playerSrc) && /^blob:/.test(eventSrc)) {\n          // if both the tech source and the player source were updated we assume\n          // something like @videojs/http-streaming did the sourceset and skip updating the source cache.\n          if (!this.lastSource_ || this.lastSource_.tech !== eventSrc && this.lastSource_.player !== playerSrc) {\n            updateSourceCaches = function updateSourceCaches() {};\n          }\n        } // update the source to the intial source right away\n        // in some cases this will be empty string\n\n\n        updateSourceCaches(eventSrc); // if the `sourceset` `src` was an empty string\n        // wait for a `loadstart` to update the cache to `currentSrc`.\n        // If a sourceset happens before a `loadstart`, we reset the state\n        // as this function will be called again.\n\n        if (!event.src) {\n          var updateCache = function updateCache(e) {\n            if (e.type !== 'sourceset') {\n              var techSrc = _this5.techGet('currentSrc');\n\n              _this5.lastSource_.tech = techSrc;\n\n              _this5.updateSourceCaches_(techSrc);\n            }\n\n            _this5.tech_.off(['sourceset', 'loadstart'], updateCache);\n          };\n\n          this.tech_.one(['sourceset', 'loadstart'], updateCache);\n        }\n      }\n\n      this.lastSource_ = {\n        player: this.currentSource().src,\n        tech: event.src\n      };\n      this.trigger({\n        src: event.src,\n        type: 'sourceset'\n      });\n    }\n    /**\n     * Add/remove the vjs-has-started class\n     *\n     * @fires Player#firstplay\n     *\n     * @param {boolean} request\n     *        - true: adds the class\n     *        - false: remove the class\n     *\n     * @return {boolean}\n     *         the boolean value of hasStarted_\n     */\n    ;\n\n    _proto.hasStarted = function hasStarted(request) {\n      if (request === undefined) {\n        // act as getter, if we have no request to change\n        return this.hasStarted_;\n      }\n\n      if (request === this.hasStarted_) {\n        return;\n      }\n\n      this.hasStarted_ = request;\n\n      if (this.hasStarted_) {\n        this.addClass('vjs-has-started');\n        this.trigger('firstplay');\n      } else {\n        this.removeClass('vjs-has-started');\n      }\n    }\n    /**\n     * Fired whenever the media begins or resumes playback\n     *\n     * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#dom-media-play}\n     * @fires Player#play\n     * @listens Tech#play\n     * @private\n     */\n    ;\n\n    _proto.handleTechPlay_ = function handleTechPlay_() {\n      this.removeClass('vjs-ended');\n      this.removeClass('vjs-paused');\n      this.addClass('vjs-playing'); // hide the poster when the user hits play\n\n      this.hasStarted(true);\n      /**\n       * Triggered whenever an {@link Tech#play} event happens. Indicates that\n       * playback has started or resumed.\n       *\n       * @event Player#play\n       * @type {EventTarget~Event}\n       */\n\n      this.trigger('play');\n    }\n    /**\n     * Retrigger the `ratechange` event that was triggered by the {@link Tech}.\n     *\n     * If there were any events queued while the playback rate was zero, fire\n     * those events now.\n     *\n     * @private\n     * @method Player#handleTechRateChange_\n     * @fires Player#ratechange\n     * @listens Tech#ratechange\n     */\n    ;\n\n    _proto.handleTechRateChange_ = function handleTechRateChange_() {\n      if (this.tech_.playbackRate() > 0 && this.cache_.lastPlaybackRate === 0) {\n        this.queuedCallbacks_.forEach(function (queued) {\n          return queued.callback(queued.event);\n        });\n        this.queuedCallbacks_ = [];\n      }\n\n      this.cache_.lastPlaybackRate = this.tech_.playbackRate();\n      /**\n       * Fires when the playing speed of the audio/video is changed\n       *\n       * @event Player#ratechange\n       * @type {event}\n       */\n\n      this.trigger('ratechange');\n    }\n    /**\n     * Retrigger the `waiting` event that was triggered by the {@link Tech}.\n     *\n     * @fires Player#waiting\n     * @listens Tech#waiting\n     * @private\n     */\n    ;\n\n    _proto.handleTechWaiting_ = function handleTechWaiting_() {\n      var _this6 = this;\n\n      this.addClass('vjs-waiting');\n      /**\n       * A readyState change on the DOM element has caused playback to stop.\n       *\n       * @event Player#waiting\n       * @type {EventTarget~Event}\n       */\n\n      this.trigger('waiting'); // Browsers may emit a timeupdate event after a waiting event. In order to prevent\n      // premature removal of the waiting class, wait for the time to change.\n\n      var timeWhenWaiting = this.currentTime();\n\n      var timeUpdateListener = function timeUpdateListener() {\n        if (timeWhenWaiting !== _this6.currentTime()) {\n          _this6.removeClass('vjs-waiting');\n\n          _this6.off('timeupdate', timeUpdateListener);\n        }\n      };\n\n      this.on('timeupdate', timeUpdateListener);\n    }\n    /**\n     * Retrigger the `canplay` event that was triggered by the {@link Tech}.\n     * > Note: This is not consistent between browsers. See #1351\n     *\n     * @fires Player#canplay\n     * @listens Tech#canplay\n     * @private\n     */\n    ;\n\n    _proto.handleTechCanPlay_ = function handleTechCanPlay_() {\n      this.removeClass('vjs-waiting');\n      /**\n       * The media has a readyState of HAVE_FUTURE_DATA or greater.\n       *\n       * @event Player#canplay\n       * @type {EventTarget~Event}\n       */\n\n      this.trigger('canplay');\n    }\n    /**\n     * Retrigger the `canplaythrough` event that was triggered by the {@link Tech}.\n     *\n     * @fires Player#canplaythrough\n     * @listens Tech#canplaythrough\n     * @private\n     */\n    ;\n\n    _proto.handleTechCanPlayThrough_ = function handleTechCanPlayThrough_() {\n      this.removeClass('vjs-waiting');\n      /**\n       * The media has a readyState of HAVE_ENOUGH_DATA or greater. This means that the\n       * entire media file can be played without buffering.\n       *\n       * @event Player#canplaythrough\n       * @type {EventTarget~Event}\n       */\n\n      this.trigger('canplaythrough');\n    }\n    /**\n     * Retrigger the `playing` event that was triggered by the {@link Tech}.\n     *\n     * @fires Player#playing\n     * @listens Tech#playing\n     * @private\n     */\n    ;\n\n    _proto.handleTechPlaying_ = function handleTechPlaying_() {\n      this.removeClass('vjs-waiting');\n      /**\n       * The media is no longer blocked from playback, and has started playing.\n       *\n       * @event Player#playing\n       * @type {EventTarget~Event}\n       */\n\n      this.trigger('playing');\n    }\n    /**\n     * Retrigger the `seeking` event that was triggered by the {@link Tech}.\n     *\n     * @fires Player#seeking\n     * @listens Tech#seeking\n     * @private\n     */\n    ;\n\n    _proto.handleTechSeeking_ = function handleTechSeeking_() {\n      this.addClass('vjs-seeking');\n      /**\n       * Fired whenever the player is jumping to a new time\n       *\n       * @event Player#seeking\n       * @type {EventTarget~Event}\n       */\n\n      this.trigger('seeking');\n    }\n    /**\n     * Retrigger the `seeked` event that was triggered by the {@link Tech}.\n     *\n     * @fires Player#seeked\n     * @listens Tech#seeked\n     * @private\n     */\n    ;\n\n    _proto.handleTechSeeked_ = function handleTechSeeked_() {\n      this.removeClass('vjs-seeking');\n      this.removeClass('vjs-ended');\n      /**\n       * Fired when the player has finished jumping to a new time\n       *\n       * @event Player#seeked\n       * @type {EventTarget~Event}\n       */\n\n      this.trigger('seeked');\n    }\n    /**\n     * Retrigger the `firstplay` event that was triggered by the {@link Tech}.\n     *\n     * @fires Player#firstplay\n     * @listens Tech#firstplay\n     * @deprecated As of 6.0 firstplay event is deprecated.\n     *             As of 6.0 passing the `starttime` option to the player and the firstplay event are deprecated.\n     * @private\n     */\n    ;\n\n    _proto.handleTechFirstPlay_ = function handleTechFirstPlay_() {\n      // If the first starttime attribute is specified\n      // then we will start at the given offset in seconds\n      if (this.options_.starttime) {\n        log.warn('Passing the `starttime` option to the player will be deprecated in 6.0');\n        this.currentTime(this.options_.starttime);\n      }\n\n      this.addClass('vjs-has-started');\n      /**\n       * Fired the first time a video is played. Not part of the HLS spec, and this is\n       * probably not the best implementation yet, so use sparingly. If you don't have a\n       * reason to prevent playback, use `myPlayer.one('play');` instead.\n       *\n       * @event Player#firstplay\n       * @deprecated As of 6.0 firstplay event is deprecated.\n       * @type {EventTarget~Event}\n       */\n\n      this.trigger('firstplay');\n    }\n    /**\n     * Retrigger the `pause` event that was triggered by the {@link Tech}.\n     *\n     * @fires Player#pause\n     * @listens Tech#pause\n     * @private\n     */\n    ;\n\n    _proto.handleTechPause_ = function handleTechPause_() {\n      this.removeClass('vjs-playing');\n      this.addClass('vjs-paused');\n      /**\n       * Fired whenever the media has been paused\n       *\n       * @event Player#pause\n       * @type {EventTarget~Event}\n       */\n\n      this.trigger('pause');\n    }\n    /**\n     * Retrigger the `ended` event that was triggered by the {@link Tech}.\n     *\n     * @fires Player#ended\n     * @listens Tech#ended\n     * @private\n     */\n    ;\n\n    _proto.handleTechEnded_ = function handleTechEnded_() {\n      this.addClass('vjs-ended');\n\n      if (this.options_.loop) {\n        this.currentTime(0);\n        this.play();\n      } else if (!this.paused()) {\n        this.pause();\n      }\n      /**\n       * Fired when the end of the media resource is reached (currentTime == duration)\n       *\n       * @event Player#ended\n       * @type {EventTarget~Event}\n       */\n\n\n      this.trigger('ended');\n    }\n    /**\n     * Fired when the duration of the media resource is first known or changed\n     *\n     * @listens Tech#durationchange\n     * @private\n     */\n    ;\n\n    _proto.handleTechDurationChange_ = function handleTechDurationChange_() {\n      this.duration(this.techGet_('duration'));\n    }\n    /**\n     * Handle a click on the media element to play/pause\n     *\n     * @param {EventTarget~Event} event\n     *        the event that caused this function to trigger\n     *\n     * @listens Tech#mousedown\n     * @private\n     */\n    ;\n\n    _proto.handleTechClick_ = function handleTechClick_(event) {\n      if (!isSingleLeftClick(event)) {\n        return;\n      } // When controls are disabled a click should not toggle playback because\n      // the click is considered a control\n\n\n      if (!this.controls_) {\n        return;\n      }\n\n      if (this.paused()) {\n        silencePromise(this.play());\n      } else {\n        this.pause();\n      }\n    }\n    /**\n     * Handle a double-click on the media element to enter/exit fullscreen\n     *\n     * @param {EventTarget~Event} event\n     *        the event that caused this function to trigger\n     *\n     * @listens Tech#dblclick\n     * @private\n     */\n    ;\n\n    _proto.handleTechDoubleClick_ = function handleTechDoubleClick_(event) {\n      if (!this.controls_) {\n        return;\n      } // we do not want to toggle fullscreen state\n      // when double-clicking inside a control bar or a modal\n\n\n      var inAllowedEls = Array.prototype.some.call(this.$$('.vjs-control-bar, .vjs-modal-dialog'), function (el) {\n        return el.contains(event.target);\n      });\n\n      if (!inAllowedEls) {\n        /*\n         * options.userActions.doubleClick\n         *\n         * If `undefined` or `true`, double-click toggles fullscreen if controls are present\n         * Set to `false` to disable double-click handling\n         * Set to a function to substitute an external double-click handler\n         */\n        if (this.options_ === undefined || this.options_.userActions === undefined || this.options_.userActions.doubleClick === undefined || this.options_.userActions.doubleClick !== false) {\n          if (this.options_ !== undefined && this.options_.userActions !== undefined && typeof this.options_.userActions.doubleClick === 'function') {\n            this.options_.userActions.doubleClick.call(this, event);\n          } else if (this.isFullscreen()) {\n            this.exitFullscreen();\n          } else {\n            this.requestFullscreen();\n          }\n        }\n      }\n    }\n    /**\n     * Handle a tap on the media element. It will toggle the user\n     * activity state, which hides and shows the controls.\n     *\n     * @listens Tech#tap\n     * @private\n     */\n    ;\n\n    _proto.handleTechTap_ = function handleTechTap_() {\n      this.userActive(!this.userActive());\n    }\n    /**\n     * Handle touch to start\n     *\n     * @listens Tech#touchstart\n     * @private\n     */\n    ;\n\n    _proto.handleTechTouchStart_ = function handleTechTouchStart_() {\n      this.userWasActive = this.userActive();\n    }\n    /**\n     * Handle touch to move\n     *\n     * @listens Tech#touchmove\n     * @private\n     */\n    ;\n\n    _proto.handleTechTouchMove_ = function handleTechTouchMove_() {\n      if (this.userWasActive) {\n        this.reportUserActivity();\n      }\n    }\n    /**\n     * Handle touch to end\n     *\n     * @param {EventTarget~Event} event\n     *        the touchend event that triggered\n     *        this function\n     *\n     * @listens Tech#touchend\n     * @private\n     */\n    ;\n\n    _proto.handleTechTouchEnd_ = function handleTechTouchEnd_(event) {\n      // Stop the mouse events from also happening\n      event.preventDefault();\n    }\n    /**\n     * native click events on the SWF aren't triggered on IE11, Win8.1RT\n     * use stageclick events triggered from inside the SWF instead\n     *\n     * @private\n     * @listens stageclick\n     */\n    ;\n\n    _proto.handleStageClick_ = function handleStageClick_() {\n      this.reportUserActivity();\n    }\n    /**\n     * @private\n     */\n    ;\n\n    _proto.toggleFullscreenClass_ = function toggleFullscreenClass_() {\n      if (this.isFullscreen()) {\n        this.addClass('vjs-fullscreen');\n      } else {\n        this.removeClass('vjs-fullscreen');\n      }\n    }\n    /**\n     * when the document fschange event triggers it calls this\n     */\n    ;\n\n    _proto.documentFullscreenChange_ = function documentFullscreenChange_(e) {\n      var fsApi = FullscreenApi;\n      this.isFullscreen(document[fsApi.fullscreenElement]); // If cancelling fullscreen, remove event listener.\n\n      if (this.isFullscreen() === false) {\n        off(document, fsApi.fullscreenchange, bind(this, this.documentFullscreenChange_));\n      }\n\n      if (!prefixedAPI) {\n        /**\n         * @event Player#fullscreenchange\n         * @type {EventTarget~Event}\n         */\n        this.trigger('fullscreenchange');\n      }\n    }\n    /**\n     * Handle Tech Fullscreen Change\n     *\n     * @param {EventTarget~Event} event\n     *        the fullscreenchange event that triggered this function\n     *\n     * @param {Object} data\n     *        the data that was sent with the event\n     *\n     * @private\n     * @listens Tech#fullscreenchange\n     * @fires Player#fullscreenchange\n     */\n    ;\n\n    _proto.handleTechFullscreenChange_ = function handleTechFullscreenChange_(event, data) {\n      if (data) {\n        this.isFullscreen(data.isFullscreen);\n      }\n      /**\n       * Fired when going in and out of fullscreen.\n       *\n       * @event Player#fullscreenchange\n       * @type {EventTarget~Event}\n       */\n\n\n      this.trigger('fullscreenchange');\n    }\n    /**\n     * Fires when an error occurred during the loading of an audio/video.\n     *\n     * @private\n     * @listens Tech#error\n     */\n    ;\n\n    _proto.handleTechError_ = function handleTechError_() {\n      var error = this.tech_.error();\n      this.error(error);\n    }\n    /**\n     * Retrigger the `textdata` event that was triggered by the {@link Tech}.\n     *\n     * @fires Player#textdata\n     * @listens Tech#textdata\n     * @private\n     */\n    ;\n\n    _proto.handleTechTextData_ = function handleTechTextData_() {\n      var data = null;\n\n      if (arguments.length > 1) {\n        data = arguments[1];\n      }\n      /**\n       * Fires when we get a textdata event from tech\n       *\n       * @event Player#textdata\n       * @type {EventTarget~Event}\n       */\n\n\n      this.trigger('textdata', data);\n    }\n    /**\n     * Get object for cached values.\n     *\n     * @return {Object}\n     *         get the current object cache\n     */\n    ;\n\n    _proto.getCache = function getCache() {\n      return this.cache_;\n    }\n    /**\n     * Resets the internal cache object.\n     *\n     * Using this function outside the player constructor or reset method may\n     * have unintended side-effects.\n     *\n     * @private\n     */\n    ;\n\n    _proto.resetCache_ = function resetCache_() {\n      this.cache_ = {\n        // Right now, the currentTime is not _really_ cached because it is always\n        // retrieved from the tech (see: currentTime). However, for completeness,\n        // we set it to zero here to ensure that if we do start actually caching\n        // it, we reset it along with everything else.\n        currentTime: 0,\n        duration: NaN,\n        lastVolume: 1,\n        lastPlaybackRate: this.defaultPlaybackRate(),\n        media: null,\n        src: '',\n        source: {},\n        sources: [],\n        volume: 1\n      };\n    }\n    /**\n     * Pass values to the playback tech\n     *\n     * @param {string} [method]\n     *        the method to call\n     *\n     * @param {Object} arg\n     *        the argument to pass\n     *\n     * @private\n     */\n    ;\n\n    _proto.techCall_ = function techCall_(method, arg) {\n      // If it's not ready yet, call method when it is\n      this.ready(function () {\n        if (method in allowedSetters) {\n          return set$1(this.middleware_, this.tech_, method, arg);\n        } else if (method in allowedMediators) {\n          return mediate(this.middleware_, this.tech_, method, arg);\n        }\n\n        try {\n          if (this.tech_) {\n            this.tech_[method](arg);\n          }\n        } catch (e) {\n          log(e);\n          throw e;\n        }\n      }, true);\n    }\n    /**\n     * Get calls can't wait for the tech, and sometimes don't need to.\n     *\n     * @param {string} method\n     *        Tech method\n     *\n     * @return {Function|undefined}\n     *         the method or undefined\n     *\n     * @private\n     */\n    ;\n\n    _proto.techGet_ = function techGet_(method) {\n      if (!this.tech_ || !this.tech_.isReady_) {\n        return;\n      }\n\n      if (method in allowedGetters) {\n        return get(this.middleware_, this.tech_, method);\n      } else if (method in allowedMediators) {\n        return mediate(this.middleware_, this.tech_, method);\n      } // Flash likes to die and reload when you hide or reposition it.\n      // In these cases the object methods go away and we get errors.\n      // When that happens we'll catch the errors and inform tech that it's not ready any more.\n\n\n      try {\n        return this.tech_[method]();\n      } catch (e) {\n        // When building additional tech libs, an expected method may not be defined yet\n        if (this.tech_[method] === undefined) {\n          log(\"Video.js: \" + method + \" method not defined for \" + this.techName_ + \" playback technology.\", e);\n          throw e;\n        } // When a method isn't available on the object it throws a TypeError\n\n\n        if (e.name === 'TypeError') {\n          log(\"Video.js: \" + method + \" unavailable on \" + this.techName_ + \" playback technology element.\", e);\n          this.tech_.isReady_ = false;\n          throw e;\n        } // If error unknown, just log and throw\n\n\n        log(e);\n        throw e;\n      }\n    }\n    /**\n     * Attempt to begin playback at the first opportunity.\n     *\n     * @return {Promise|undefined}\n     *         Returns a promise if the browser supports Promises (or one\n     *         was passed in as an option). This promise will be resolved on\n     *         the return value of play. If this is undefined it will fulfill the\n     *         promise chain otherwise the promise chain will be fulfilled when\n     *         the promise from play is fulfilled.\n     */\n    ;\n\n    _proto.play = function play() {\n      var _this7 = this;\n\n      var PromiseClass = this.options_.Promise || window$1.Promise;\n\n      if (PromiseClass) {\n        return new PromiseClass(function (resolve) {\n          _this7.play_(resolve);\n        });\n      }\n\n      return this.play_();\n    }\n    /**\n     * The actual logic for play, takes a callback that will be resolved on the\n     * return value of play. This allows us to resolve to the play promise if there\n     * is one on modern browsers.\n     *\n     * @private\n     * @param {Function} [callback]\n     *        The callback that should be called when the techs play is actually called\n     */\n    ;\n\n    _proto.play_ = function play_(callback) {\n      var _this8 = this;\n\n      if (callback === void 0) {\n        callback = silencePromise;\n      }\n\n      // If this is called while we have a play queued up on a loadstart, remove\n      // that listener to avoid getting in a potentially bad state.\n      if (this.playOnLoadstart_) {\n        this.off('loadstart', this.playOnLoadstart_);\n      } // If the player/tech is not ready, queue up another call to `play()` for\n      // when it is. This will loop back into this method for another attempt at\n      // playback when the tech is ready.\n\n\n      if (!this.isReady_) {\n        // Bail out if we're already waiting for `ready`!\n        if (this.playWaitingForReady_) {\n          return;\n        }\n\n        this.playWaitingForReady_ = true;\n        this.ready(function () {\n          _this8.playWaitingForReady_ = false;\n          callback(_this8.play());\n        }); // If the player/tech is ready and we have a source, we can attempt playback.\n      } else if (!this.changingSrc_ && (this.src() || this.currentSrc())) {\n        callback(this.techGet_('play'));\n        return; // If the tech is ready, but we do not have a source, we'll need to wait\n        // for both the `ready` and a `loadstart` when the source is finally\n        // resolved by middleware and set on the player.\n        //\n        // This can happen if `play()` is called while changing sources or before\n        // one has been set on the player.\n      } else {\n        this.playOnLoadstart_ = function () {\n          _this8.playOnLoadstart_ = null;\n          callback(_this8.play());\n        };\n\n        this.one('loadstart', this.playOnLoadstart_);\n      }\n    }\n    /**\n     * Pause the video playback\n     *\n     * @return {Player}\n     *         A reference to the player object this function was called on\n     */\n    ;\n\n    _proto.pause = function pause() {\n      this.techCall_('pause');\n    }\n    /**\n     * Check if the player is paused or has yet to play\n     *\n     * @return {boolean}\n     *         - false: if the media is currently playing\n     *         - true: if media is not currently playing\n     */\n    ;\n\n    _proto.paused = function paused() {\n      // The initial state of paused should be true (in Safari it's actually false)\n      return this.techGet_('paused') === false ? false : true;\n    }\n    /**\n     * Get a TimeRange object representing the current ranges of time that the user\n     * has played.\n     *\n     * @return {TimeRange}\n     *         A time range object that represents all the increments of time that have\n     *         been played.\n     */\n    ;\n\n    _proto.played = function played() {\n      return this.techGet_('played') || createTimeRanges(0, 0);\n    }\n    /**\n     * Returns whether or not the user is \"scrubbing\". Scrubbing is\n     * when the user has clicked the progress bar handle and is\n     * dragging it along the progress bar.\n     *\n     * @param {boolean} [isScrubbing]\n     *        whether the user is or is not scrubbing\n     *\n     * @return {boolean}\n     *         The value of scrubbing when getting\n     */\n    ;\n\n    _proto.scrubbing = function scrubbing(isScrubbing) {\n      if (typeof isScrubbing === 'undefined') {\n        return this.scrubbing_;\n      }\n\n      this.scrubbing_ = !!isScrubbing;\n\n      if (isScrubbing) {\n        this.addClass('vjs-scrubbing');\n      } else {\n        this.removeClass('vjs-scrubbing');\n      }\n    }\n    /**\n     * Get or set the current time (in seconds)\n     *\n     * @param {number|string} [seconds]\n     *        The time to seek to in seconds\n     *\n     * @return {number}\n     *         - the current time in seconds when getting\n     */\n    ;\n\n    _proto.currentTime = function currentTime(seconds) {\n      if (typeof seconds !== 'undefined') {\n        if (seconds < 0) {\n          seconds = 0;\n        }\n\n        this.techCall_('setCurrentTime', seconds);\n        return;\n      } // cache last currentTime and return. default to 0 seconds\n      //\n      // Caching the currentTime is meant to prevent a massive amount of reads on the tech's\n      // currentTime when scrubbing, but may not provide much performance benefit afterall.\n      // Should be tested. Also something has to read the actual current time or the cache will\n      // never get updated.\n\n\n      this.cache_.currentTime = this.techGet_('currentTime') || 0;\n      return this.cache_.currentTime;\n    }\n    /**\n     * Normally gets the length in time of the video in seconds;\n     * in all but the rarest use cases an argument will NOT be passed to the method\n     *\n     * > **NOTE**: The video must have started loading before the duration can be\n     * known, and in the case of Flash, may not be known until the video starts\n     * playing.\n     *\n     * @fires Player#durationchange\n     *\n     * @param {number} [seconds]\n     *        The duration of the video to set in seconds\n     *\n     * @return {number}\n     *         - The duration of the video in seconds when getting\n     */\n    ;\n\n    _proto.duration = function duration(seconds) {\n      if (seconds === undefined) {\n        // return NaN if the duration is not known\n        return this.cache_.duration !== undefined ? this.cache_.duration : NaN;\n      }\n\n      seconds = parseFloat(seconds); // Standardize on Infinity for signaling video is live\n\n      if (seconds < 0) {\n        seconds = Infinity;\n      }\n\n      if (seconds !== this.cache_.duration) {\n        // Cache the last set value for optimized scrubbing (esp. Flash)\n        this.cache_.duration = seconds;\n\n        if (seconds === Infinity) {\n          this.addClass('vjs-live');\n\n          if (this.options_.liveui && this.player_.liveTracker) {\n            this.addClass('vjs-liveui');\n          }\n        } else {\n          this.removeClass('vjs-live');\n          this.removeClass('vjs-liveui');\n        }\n\n        if (!isNaN(seconds)) {\n          // Do not fire durationchange unless the duration value is known.\n          // @see [Spec]{@link https://www.w3.org/TR/2011/WD-html5-20110113/video.html#media-element-load-algorithm}\n\n          /**\n           * @event Player#durationchange\n           * @type {EventTarget~Event}\n           */\n          this.trigger('durationchange');\n        }\n      }\n    }\n    /**\n     * Calculates how much time is left in the video. Not part\n     * of the native video API.\n     *\n     * @return {number}\n     *         The time remaining in seconds\n     */\n    ;\n\n    _proto.remainingTime = function remainingTime() {\n      return this.duration() - this.currentTime();\n    }\n    /**\n     * A remaining time function that is intented to be used when\n     * the time is to be displayed directly to the user.\n     *\n     * @return {number}\n     *         The rounded time remaining in seconds\n     */\n    ;\n\n    _proto.remainingTimeDisplay = function remainingTimeDisplay() {\n      return Math.floor(this.duration()) - Math.floor(this.currentTime());\n    } //\n    // Kind of like an array of portions of the video that have been downloaded.\n\n    /**\n     * Get a TimeRange object with an array of the times of the video\n     * that have been downloaded. If you just want the percent of the\n     * video that's been downloaded, use bufferedPercent.\n     *\n     * @see [Buffered Spec]{@link http://dev.w3.org/html5/spec/video.html#dom-media-buffered}\n     *\n     * @return {TimeRange}\n     *         A mock TimeRange object (following HTML spec)\n     */\n    ;\n\n    _proto.buffered = function buffered() {\n      var buffered = this.techGet_('buffered');\n\n      if (!buffered || !buffered.length) {\n        buffered = createTimeRanges(0, 0);\n      }\n\n      return buffered;\n    }\n    /**\n     * Get the percent (as a decimal) of the video that's been downloaded.\n     * This method is not a part of the native HTML video API.\n     *\n     * @return {number}\n     *         A decimal between 0 and 1 representing the percent\n     *         that is buffered 0 being 0% and 1 being 100%\n     */\n    ;\n\n    _proto.bufferedPercent = function bufferedPercent$$1() {\n      return bufferedPercent(this.buffered(), this.duration());\n    }\n    /**\n     * Get the ending time of the last buffered time range\n     * This is used in the progress bar to encapsulate all time ranges.\n     *\n     * @return {number}\n     *         The end of the last buffered time range\n     */\n    ;\n\n    _proto.bufferedEnd = function bufferedEnd() {\n      var buffered = this.buffered();\n      var duration = this.duration();\n      var end = buffered.end(buffered.length - 1);\n\n      if (end > duration) {\n        end = duration;\n      }\n\n      return end;\n    }\n    /**\n     * Get or set the current volume of the media\n     *\n     * @param  {number} [percentAsDecimal]\n     *         The new volume as a decimal percent:\n     *         - 0 is muted/0%/off\n     *         - 1.0 is 100%/full\n     *         - 0.5 is half volume or 50%\n     *\n     * @return {number}\n     *         The current volume as a percent when getting\n     */\n    ;\n\n    _proto.volume = function volume(percentAsDecimal) {\n      var vol;\n\n      if (percentAsDecimal !== undefined) {\n        // Force value to between 0 and 1\n        vol = Math.max(0, Math.min(1, parseFloat(percentAsDecimal)));\n        this.cache_.volume = vol;\n        this.techCall_('setVolume', vol);\n\n        if (vol > 0) {\n          this.lastVolume_(vol);\n        }\n\n        return;\n      } // Default to 1 when returning current volume.\n\n\n      vol = parseFloat(this.techGet_('volume'));\n      return isNaN(vol) ? 1 : vol;\n    }\n    /**\n     * Get the current muted state, or turn mute on or off\n     *\n     * @param {boolean} [muted]\n     *        - true to mute\n     *        - false to unmute\n     *\n     * @return {boolean}\n     *         - true if mute is on and getting\n     *         - false if mute is off and getting\n     */\n    ;\n\n    _proto.muted = function muted(_muted) {\n      if (_muted !== undefined) {\n        this.techCall_('setMuted', _muted);\n        return;\n      }\n\n      return this.techGet_('muted') || false;\n    }\n    /**\n     * Get the current defaultMuted state, or turn defaultMuted on or off. defaultMuted\n     * indicates the state of muted on initial playback.\n     *\n     * ```js\n     *   var myPlayer = videojs('some-player-id');\n     *\n     *   myPlayer.src(\"http://www.example.com/path/to/video.mp4\");\n     *\n     *   // get, should be false\n     *   console.log(myPlayer.defaultMuted());\n     *   // set to true\n     *   myPlayer.defaultMuted(true);\n     *   // get should be true\n     *   console.log(myPlayer.defaultMuted());\n     * ```\n     *\n     * @param {boolean} [defaultMuted]\n     *        - true to mute\n     *        - false to unmute\n     *\n     * @return {boolean|Player}\n     *         - true if defaultMuted is on and getting\n     *         - false if defaultMuted is off and getting\n     *         - A reference to the current player when setting\n     */\n    ;\n\n    _proto.defaultMuted = function defaultMuted(_defaultMuted) {\n      if (_defaultMuted !== undefined) {\n        return this.techCall_('setDefaultMuted', _defaultMuted);\n      }\n\n      return this.techGet_('defaultMuted') || false;\n    }\n    /**\n     * Get the last volume, or set it\n     *\n     * @param  {number} [percentAsDecimal]\n     *         The new last volume as a decimal percent:\n     *         - 0 is muted/0%/off\n     *         - 1.0 is 100%/full\n     *         - 0.5 is half volume or 50%\n     *\n     * @return {number}\n     *         the current value of lastVolume as a percent when getting\n     *\n     * @private\n     */\n    ;\n\n    _proto.lastVolume_ = function lastVolume_(percentAsDecimal) {\n      if (percentAsDecimal !== undefined && percentAsDecimal !== 0) {\n        this.cache_.lastVolume = percentAsDecimal;\n        return;\n      }\n\n      return this.cache_.lastVolume;\n    }\n    /**\n     * Check if current tech can support native fullscreen\n     * (e.g. with built in controls like iOS, so not our flash swf)\n     *\n     * @return {boolean}\n     *         if native fullscreen is supported\n     */\n    ;\n\n    _proto.supportsFullScreen = function supportsFullScreen() {\n      return this.techGet_('supportsFullScreen') || false;\n    }\n    /**\n     * Check if the player is in fullscreen mode or tell the player that it\n     * is or is not in fullscreen mode.\n     *\n     * > NOTE: As of the latest HTML5 spec, isFullscreen is no longer an official\n     * property and instead document.fullscreenElement is used. But isFullscreen is\n     * still a valuable property for internal player workings.\n     *\n     * @param  {boolean} [isFS]\n     *         Set the players current fullscreen state\n     *\n     * @return {boolean}\n     *         - true if fullscreen is on and getting\n     *         - false if fullscreen is off and getting\n     */\n    ;\n\n    _proto.isFullscreen = function isFullscreen(isFS) {\n      if (isFS !== undefined) {\n        this.isFullscreen_ = !!isFS;\n        this.toggleFullscreenClass_();\n        return;\n      }\n\n      return !!this.isFullscreen_;\n    }\n    /**\n     * Increase the size of the video to full screen\n     * In some browsers, full screen is not supported natively, so it enters\n     * \"full window mode\", where the video fills the browser window.\n     * In browsers and devices that support native full screen, sometimes the\n     * browser's default controls will be shown, and not the Video.js custom skin.\n     * This includes most mobile devices (iOS, Android) and older versions of\n     * Safari.\n     *\n     * @fires Player#fullscreenchange\n     */\n    ;\n\n    _proto.requestFullscreen = function requestFullscreen() {\n      var fsApi = FullscreenApi;\n      this.isFullscreen(true);\n\n      if (fsApi.requestFullscreen) {\n        // the browser supports going fullscreen at the element level so we can\n        // take the controls fullscreen as well as the video\n        // Trigger fullscreenchange event after change\n        // We have to specifically add this each time, and remove\n        // when canceling fullscreen. Otherwise if there's multiple\n        // players on a page, they would all be reacting to the same fullscreen\n        // events\n        on(document, fsApi.fullscreenchange, bind(this, this.documentFullscreenChange_));\n        this.el_[fsApi.requestFullscreen]();\n      } else if (this.tech_.supportsFullScreen()) {\n        // we can't take the video.js controls fullscreen but we can go fullscreen\n        // with native controls\n        this.techCall_('enterFullScreen');\n      } else {\n        // fullscreen isn't supported so we'll just stretch the video element to\n        // fill the viewport\n        this.enterFullWindow();\n        /**\n         * @event Player#fullscreenchange\n         * @type {EventTarget~Event}\n         */\n\n        this.trigger('fullscreenchange');\n      }\n    }\n    /**\n     * Return the video to its normal size after having been in full screen mode\n     *\n     * @fires Player#fullscreenchange\n     */\n    ;\n\n    _proto.exitFullscreen = function exitFullscreen() {\n      var fsApi = FullscreenApi;\n      this.isFullscreen(false); // Check for browser element fullscreen support\n\n      if (fsApi.requestFullscreen) {\n        document[fsApi.exitFullscreen]();\n      } else if (this.tech_.supportsFullScreen()) {\n        this.techCall_('exitFullScreen');\n      } else {\n        this.exitFullWindow();\n        /**\n         * @event Player#fullscreenchange\n         * @type {EventTarget~Event}\n         */\n\n        this.trigger('fullscreenchange');\n      }\n    }\n    /**\n     * When fullscreen isn't supported we can stretch the\n     * video container to as wide as the browser will let us.\n     *\n     * @fires Player#enterFullWindow\n     */\n    ;\n\n    _proto.enterFullWindow = function enterFullWindow() {\n      this.isFullWindow = true; // Storing original doc overflow value to return to when fullscreen is off\n\n      this.docOrigOverflow = document.documentElement.style.overflow; // Add listener for esc key to exit fullscreen\n\n      on(document, 'keydown', bind(this, this.fullWindowOnEscKey)); // Hide any scroll bars\n\n      document.documentElement.style.overflow = 'hidden'; // Apply fullscreen styles\n\n      addClass(document.body, 'vjs-full-window');\n      /**\n       * @event Player#enterFullWindow\n       * @type {EventTarget~Event}\n       */\n\n      this.trigger('enterFullWindow');\n    }\n    /**\n     * Check for call to either exit full window or\n     * full screen on ESC key\n     *\n     * @param {string} event\n     *        Event to check for key press\n     */\n    ;\n\n    _proto.fullWindowOnEscKey = function fullWindowOnEscKey(event) {\n      if (keycode.isEventKey(event, 'Esc')) {\n        if (this.isFullscreen() === true) {\n          this.exitFullscreen();\n        } else {\n          this.exitFullWindow();\n        }\n      }\n    }\n    /**\n     * Exit full window\n     *\n     * @fires Player#exitFullWindow\n     */\n    ;\n\n    _proto.exitFullWindow = function exitFullWindow() {\n      this.isFullWindow = false;\n      off(document, 'keydown', this.fullWindowOnEscKey); // Unhide scroll bars.\n\n      document.documentElement.style.overflow = this.docOrigOverflow; // Remove fullscreen styles\n\n      removeClass(document.body, 'vjs-full-window'); // Resize the box, controller, and poster to original sizes\n      // this.positionAll();\n\n      /**\n       * @event Player#exitFullWindow\n       * @type {EventTarget~Event}\n       */\n\n      this.trigger('exitFullWindow');\n    }\n    /**\n     * This gets called when a `Player` gains focus via a `focus` event.\n     * Turns on listening for `keydown` events. When they happen it\n     * calls `this.handleKeyPress`.\n     *\n     * @param {EventTarget~Event} event\n     *        The `focus` event that caused this function to be called.\n     *\n     * @listens focus\n     */\n    ;\n\n    _proto.handleFocus = function handleFocus(event) {\n      // call off first to make sure we don't keep adding keydown handlers\n      off(document, 'keydown', bind(this, this.handleKeyPress));\n      on(document, 'keydown', bind(this, this.handleKeyPress));\n    }\n    /**\n     * Called when a `Player` loses focus. Turns off the listener for\n     * `keydown` events. Which Stops `this.handleKeyPress` from getting called.\n     *\n     * @param {EventTarget~Event} event\n     *        The `blur` event that caused this function to be called.\n     *\n     * @listens blur\n     */\n    ;\n\n    _proto.handleBlur = function handleBlur(event) {\n      off(document, 'keydown', bind(this, this.handleKeyPress));\n    }\n    /**\n     * Called when this Player has focus and a key gets pressed down, or when\n     * any Component of this player receives a key press that it doesn't handle.\n     * This allows player-wide hotkeys (either as defined below, or optionally\n     * by an external function).\n     *\n     * @param {EventTarget~Event} event\n     *        The `keydown` event that caused this function to be called.\n     *\n     * @listens keydown\n     */\n    ;\n\n    _proto.handleKeyPress = function handleKeyPress(event) {\n      if (this.options_.userActions && this.options_.userActions.hotkeys && this.options_.userActions.hotkeys !== false) {\n        if (typeof this.options_.userActions.hotkeys === 'function') {\n          this.options_.userActions.hotkeys.call(this, event);\n        } else {\n          this.handleHotkeys(event);\n        }\n      }\n    }\n    /**\n     * Called when this Player receives a hotkey keydown event.\n     * Supported player-wide hotkeys are:\n     *\n     *   f          - toggle fullscreen\n     *   m          - toggle mute\n     *   k or Space - toggle play/pause\n     *\n     * @param {EventTarget~Event} event\n     *        The `keydown` event that caused this function to be called.\n     */\n    ;\n\n    _proto.handleHotkeys = function handleHotkeys(event) {\n      var hotkeys = this.options_.userActions ? this.options_.userActions.hotkeys : {}; // set fullscreenKey, muteKey, playPauseKey from `hotkeys`, use defaults if not set\n\n      var _hotkeys$fullscreenKe = hotkeys.fullscreenKey,\n          fullscreenKey = _hotkeys$fullscreenKe === void 0 ? function (keydownEvent) {\n        return keycode.isEventKey(keydownEvent, 'f');\n      } : _hotkeys$fullscreenKe,\n          _hotkeys$muteKey = hotkeys.muteKey,\n          muteKey = _hotkeys$muteKey === void 0 ? function (keydownEvent) {\n        return keycode.isEventKey(keydownEvent, 'm');\n      } : _hotkeys$muteKey,\n          _hotkeys$playPauseKey = hotkeys.playPauseKey,\n          playPauseKey = _hotkeys$playPauseKey === void 0 ? function (keydownEvent) {\n        return keycode.isEventKey(keydownEvent, 'k') || keycode.isEventKey(keydownEvent, 'Space');\n      } : _hotkeys$playPauseKey;\n\n      if (fullscreenKey.call(this, event)) {\n        event.preventDefault();\n        var FSToggle = Component.getComponent('FullscreenToggle');\n\n        if (document[FullscreenApi.fullscreenEnabled] !== false) {\n          FSToggle.prototype.handleClick.call(this);\n        }\n      } else if (muteKey.call(this, event)) {\n        event.preventDefault();\n        var MuteToggle = Component.getComponent('MuteToggle');\n        MuteToggle.prototype.handleClick.call(this);\n      } else if (playPauseKey.call(this, event)) {\n        event.preventDefault();\n        var PlayToggle = Component.getComponent('PlayToggle');\n        PlayToggle.prototype.handleClick.call(this);\n      }\n    }\n    /**\n     * Check whether the player can play a given mimetype\n     *\n     * @see https://www.w3.org/TR/2011/WD-html5-20110113/video.html#dom-navigator-canplaytype\n     *\n     * @param {string} type\n     *        The mimetype to check\n     *\n     * @return {string}\n     *         'probably', 'maybe', or '' (empty string)\n     */\n    ;\n\n    _proto.canPlayType = function canPlayType(type) {\n      var can; // Loop through each playback technology in the options order\n\n      for (var i = 0, j = this.options_.techOrder; i < j.length; i++) {\n        var techName = j[i];\n        var tech = Tech.getTech(techName); // Support old behavior of techs being registered as components.\n        // Remove once that deprecated behavior is removed.\n\n        if (!tech) {\n          tech = Component.getComponent(techName);\n        } // Check if the current tech is defined before continuing\n\n\n        if (!tech) {\n          log.error(\"The \\\"\" + techName + \"\\\" tech is undefined. Skipped browser support check for that tech.\");\n          continue;\n        } // Check if the browser supports this technology\n\n\n        if (tech.isSupported()) {\n          can = tech.canPlayType(type);\n\n          if (can) {\n            return can;\n          }\n        }\n      }\n\n      return '';\n    }\n    /**\n     * Select source based on tech-order or source-order\n     * Uses source-order selection if `options.sourceOrder` is truthy. Otherwise,\n     * defaults to tech-order selection\n     *\n     * @param {Array} sources\n     *        The sources for a media asset\n     *\n     * @return {Object|boolean}\n     *         Object of source and tech order or false\n     */\n    ;\n\n    _proto.selectSource = function selectSource(sources) {\n      var _this9 = this;\n\n      // Get only the techs specified in `techOrder` that exist and are supported by the\n      // current platform\n      var techs = this.options_.techOrder.map(function (techName) {\n        return [techName, Tech.getTech(techName)];\n      }).filter(function (_ref) {\n        var techName = _ref[0],\n            tech = _ref[1];\n\n        // Check if the current tech is defined before continuing\n        if (tech) {\n          // Check if the browser supports this technology\n          return tech.isSupported();\n        }\n\n        log.error(\"The \\\"\" + techName + \"\\\" tech is undefined. Skipped browser support check for that tech.\");\n        return false;\n      }); // Iterate over each `innerArray` element once per `outerArray` element and execute\n      // `tester` with both. If `tester` returns a non-falsy value, exit early and return\n      // that value.\n\n      var findFirstPassingTechSourcePair = function findFirstPassingTechSourcePair(outerArray, innerArray, tester) {\n        var found;\n        outerArray.some(function (outerChoice) {\n          return innerArray.some(function (innerChoice) {\n            found = tester(outerChoice, innerChoice);\n\n            if (found) {\n              return true;\n            }\n          });\n        });\n        return found;\n      };\n\n      var foundSourceAndTech;\n\n      var flip = function flip(fn) {\n        return function (a, b) {\n          return fn(b, a);\n        };\n      };\n\n      var finder = function finder(_ref2, source) {\n        var techName = _ref2[0],\n            tech = _ref2[1];\n\n        if (tech.canPlaySource(source, _this9.options_[techName.toLowerCase()])) {\n          return {\n            source: source,\n            tech: techName\n          };\n        }\n      }; // Depending on the truthiness of `options.sourceOrder`, we swap the order of techs and sources\n      // to select from them based on their priority.\n\n\n      if (this.options_.sourceOrder) {\n        // Source-first ordering\n        foundSourceAndTech = findFirstPassingTechSourcePair(sources, techs, flip(finder));\n      } else {\n        // Tech-first ordering\n        foundSourceAndTech = findFirstPassingTechSourcePair(techs, sources, finder);\n      }\n\n      return foundSourceAndTech || false;\n    }\n    /**\n     * Get or set the video source.\n     *\n     * @param {Tech~SourceObject|Tech~SourceObject[]|string} [source]\n     *        A SourceObject, an array of SourceObjects, or a string referencing\n     *        a URL to a media source. It is _highly recommended_ that an object\n     *        or array of objects is used here, so that source selection\n     *        algorithms can take the `type` into account.\n     *\n     *        If not provided, this method acts as a getter.\n     *\n     * @return {string|undefined}\n     *         If the `source` argument is missing, returns the current source\n     *         URL. Otherwise, returns nothing/undefined.\n     */\n    ;\n\n    _proto.src = function src(source) {\n      var _this10 = this;\n\n      // getter usage\n      if (typeof source === 'undefined') {\n        return this.cache_.src || '';\n      } // filter out invalid sources and turn our source into\n      // an array of source objects\n\n\n      var sources = filterSource(source); // if a source was passed in then it is invalid because\n      // it was filtered to a zero length Array. So we have to\n      // show an error\n\n      if (!sources.length) {\n        this.setTimeout(function () {\n          this.error({\n            code: 4,\n            message: this.localize(this.options_.notSupportedMessage)\n          });\n        }, 0);\n        return;\n      } // intial sources\n\n\n      this.changingSrc_ = true;\n      this.cache_.sources = sources;\n      this.updateSourceCaches_(sources[0]); // middlewareSource is the source after it has been changed by middleware\n\n      setSource(this, sources[0], function (middlewareSource, mws) {\n        _this10.middleware_ = mws; // since sourceSet is async we have to update the cache again after we select a source since\n        // the source that is selected could be out of order from the cache update above this callback.\n\n        _this10.cache_.sources = sources;\n\n        _this10.updateSourceCaches_(middlewareSource);\n\n        var err = _this10.src_(middlewareSource);\n\n        if (err) {\n          if (sources.length > 1) {\n            return _this10.src(sources.slice(1));\n          }\n\n          _this10.changingSrc_ = false; // We need to wrap this in a timeout to give folks a chance to add error event handlers\n\n          _this10.setTimeout(function () {\n            this.error({\n              code: 4,\n              message: this.localize(this.options_.notSupportedMessage)\n            });\n          }, 0); // we could not find an appropriate tech, but let's still notify the delegate that this is it\n          // this needs a better comment about why this is needed\n\n\n          _this10.triggerReady();\n\n          return;\n        }\n\n        setTech(mws, _this10.tech_);\n      });\n    }\n    /**\n     * Set the source object on the tech, returns a boolean that indicates whether\n     * there is a tech that can play the source or not\n     *\n     * @param {Tech~SourceObject} source\n     *        The source object to set on the Tech\n     *\n     * @return {boolean}\n     *         - True if there is no Tech to playback this source\n     *         - False otherwise\n     *\n     * @private\n     */\n    ;\n\n    _proto.src_ = function src_(source) {\n      var _this11 = this;\n\n      var sourceTech = this.selectSource([source]);\n\n      if (!sourceTech) {\n        return true;\n      }\n\n      if (!titleCaseEquals(sourceTech.tech, this.techName_)) {\n        this.changingSrc_ = true; // load this technology with the chosen source\n\n        this.loadTech_(sourceTech.tech, sourceTech.source);\n        this.tech_.ready(function () {\n          _this11.changingSrc_ = false;\n        });\n        return false;\n      } // wait until the tech is ready to set the source\n      // and set it synchronously if possible (#2326)\n\n\n      this.ready(function () {\n        // The setSource tech method was added with source handlers\n        // so older techs won't support it\n        // We need to check the direct prototype for the case where subclasses\n        // of the tech do not support source handlers\n        if (this.tech_.constructor.prototype.hasOwnProperty('setSource')) {\n          this.techCall_('setSource', source);\n        } else {\n          this.techCall_('src', source.src);\n        }\n\n        this.changingSrc_ = false;\n      }, true);\n      return false;\n    }\n    /**\n     * Begin loading the src data.\n     */\n    ;\n\n    _proto.load = function load() {\n      this.techCall_('load');\n    }\n    /**\n     * Reset the player. Loads the first tech in the techOrder,\n     * removes all the text tracks in the existing `tech`,\n     * and calls `reset` on the `tech`.\n     */\n    ;\n\n    _proto.reset = function reset() {\n      if (this.tech_) {\n        this.tech_.clearTracks('text');\n      }\n\n      this.resetCache_();\n      this.poster('');\n      this.loadTech_(this.options_.techOrder[0], null);\n      this.techCall_('reset');\n      this.resetControlBarUI_();\n\n      if (isEvented(this)) {\n        this.trigger('playerreset');\n      }\n    }\n    /**\n     * Reset Control Bar's UI by calling sub-methods that reset\n     * all of Control Bar's components\n     */\n    ;\n\n    _proto.resetControlBarUI_ = function resetControlBarUI_() {\n      this.resetProgressBar_();\n      this.resetPlaybackRate_();\n      this.resetVolumeBar_();\n    }\n    /**\n     * Reset tech's progress so progress bar is reset in the UI\n     */\n    ;\n\n    _proto.resetProgressBar_ = function resetProgressBar_() {\n      this.currentTime(0);\n      this.controlBar.durationDisplay.updateContent();\n      this.controlBar.remainingTimeDisplay.updateContent();\n    }\n    /**\n     * Reset Playback ratio\n     */\n    ;\n\n    _proto.resetPlaybackRate_ = function resetPlaybackRate_() {\n      this.playbackRate(this.defaultPlaybackRate());\n      this.handleTechRateChange_();\n    }\n    /**\n     * Reset Volume bar\n     */\n    ;\n\n    _proto.resetVolumeBar_ = function resetVolumeBar_() {\n      this.volume(1.0);\n      this.trigger('volumechange');\n    }\n    /**\n     * Returns all of the current source objects.\n     *\n     * @return {Tech~SourceObject[]}\n     *         The current source objects\n     */\n    ;\n\n    _proto.currentSources = function currentSources() {\n      var source = this.currentSource();\n      var sources = []; // assume `{}` or `{ src }`\n\n      if (Object.keys(source).length !== 0) {\n        sources.push(source);\n      }\n\n      return this.cache_.sources || sources;\n    }\n    /**\n     * Returns the current source object.\n     *\n     * @return {Tech~SourceObject}\n     *         The current source object\n     */\n    ;\n\n    _proto.currentSource = function currentSource() {\n      return this.cache_.source || {};\n    }\n    /**\n     * Returns the fully qualified URL of the current source value e.g. http://mysite.com/video.mp4\n     * Can be used in conjunction with `currentType` to assist in rebuilding the current source object.\n     *\n     * @return {string}\n     *         The current source\n     */\n    ;\n\n    _proto.currentSrc = function currentSrc() {\n      return this.currentSource() && this.currentSource().src || '';\n    }\n    /**\n     * Get the current source type e.g. video/mp4\n     * This can allow you rebuild the current source object so that you could load the same\n     * source and tech later\n     *\n     * @return {string}\n     *         The source MIME type\n     */\n    ;\n\n    _proto.currentType = function currentType() {\n      return this.currentSource() && this.currentSource().type || '';\n    }\n    /**\n     * Get or set the preload attribute\n     *\n     * @param {boolean} [value]\n     *        - true means that we should preload\n     *        - false means that we should not preload\n     *\n     * @return {string}\n     *         The preload attribute value when getting\n     */\n    ;\n\n    _proto.preload = function preload(value) {\n      if (value !== undefined) {\n        this.techCall_('setPreload', value);\n        this.options_.preload = value;\n        return;\n      }\n\n      return this.techGet_('preload');\n    }\n    /**\n     * Get or set the autoplay option. When this is a boolean it will\n     * modify the attribute on the tech. When this is a string the attribute on\n     * the tech will be removed and `Player` will handle autoplay on loadstarts.\n     *\n     * @param {boolean|string} [value]\n     *        - true: autoplay using the browser behavior\n     *        - false: do not autoplay\n     *        - 'play': call play() on every loadstart\n     *        - 'muted': call muted() then play() on every loadstart\n     *        - 'any': call play() on every loadstart. if that fails call muted() then play().\n     *        - *: values other than those listed here will be set `autoplay` to true\n     *\n     * @return {boolean|string}\n     *         The current value of autoplay when getting\n     */\n    ;\n\n    _proto.autoplay = function autoplay(value) {\n      // getter usage\n      if (value === undefined) {\n        return this.options_.autoplay || false;\n      }\n\n      var techAutoplay; // if the value is a valid string set it to that\n\n      if (typeof value === 'string' && /(any|play|muted)/.test(value)) {\n        this.options_.autoplay = value;\n        this.manualAutoplay_(value);\n        techAutoplay = false; // any falsy value sets autoplay to false in the browser,\n        // lets do the same\n      } else if (!value) {\n        this.options_.autoplay = false; // any other value (ie truthy) sets autoplay to true\n      } else {\n        this.options_.autoplay = true;\n      }\n\n      techAutoplay = techAutoplay || this.options_.autoplay; // if we don't have a tech then we do not queue up\n      // a setAutoplay call on tech ready. We do this because the\n      // autoplay option will be passed in the constructor and we\n      // do not need to set it twice\n\n      if (this.tech_) {\n        this.techCall_('setAutoplay', techAutoplay);\n      }\n    }\n    /**\n     * Set or unset the playsinline attribute.\n     * Playsinline tells the browser that non-fullscreen playback is preferred.\n     *\n     * @param {boolean} [value]\n     *        - true means that we should try to play inline by default\n     *        - false means that we should use the browser's default playback mode,\n     *          which in most cases is inline. iOS Safari is a notable exception\n     *          and plays fullscreen by default.\n     *\n     * @return {string|Player}\n     *         - the current value of playsinline\n     *         - the player when setting\n     *\n     * @see [Spec]{@link https://html.spec.whatwg.org/#attr-video-playsinline}\n     */\n    ;\n\n    _proto.playsinline = function playsinline(value) {\n      if (value !== undefined) {\n        this.techCall_('setPlaysinline', value);\n        this.options_.playsinline = value;\n        return this;\n      }\n\n      return this.techGet_('playsinline');\n    }\n    /**\n     * Get or set the loop attribute on the video element.\n     *\n     * @param {boolean} [value]\n     *        - true means that we should loop the video\n     *        - false means that we should not loop the video\n     *\n     * @return {string}\n     *         The current value of loop when getting\n     */\n    ;\n\n    _proto.loop = function loop(value) {\n      if (value !== undefined) {\n        this.techCall_('setLoop', value);\n        this.options_.loop = value;\n        return;\n      }\n\n      return this.techGet_('loop');\n    }\n    /**\n     * Get or set the poster image source url\n     *\n     * @fires Player#posterchange\n     *\n     * @param {string} [src]\n     *        Poster image source URL\n     *\n     * @return {string}\n     *         The current value of poster when getting\n     */\n    ;\n\n    _proto.poster = function poster(src) {\n      if (src === undefined) {\n        return this.poster_;\n      } // The correct way to remove a poster is to set as an empty string\n      // other falsey values will throw errors\n\n\n      if (!src) {\n        src = '';\n      }\n\n      if (src === this.poster_) {\n        return;\n      } // update the internal poster variable\n\n\n      this.poster_ = src; // update the tech's poster\n\n      this.techCall_('setPoster', src);\n      this.isPosterFromTech_ = false; // alert components that the poster has been set\n\n      /**\n       * This event fires when the poster image is changed on the player.\n       *\n       * @event Player#posterchange\n       * @type {EventTarget~Event}\n       */\n\n      this.trigger('posterchange');\n    }\n    /**\n     * Some techs (e.g. YouTube) can provide a poster source in an\n     * asynchronous way. We want the poster component to use this\n     * poster source so that it covers up the tech's controls.\n     * (YouTube's play button). However we only want to use this\n     * source if the player user hasn't set a poster through\n     * the normal APIs.\n     *\n     * @fires Player#posterchange\n     * @listens Tech#posterchange\n     * @private\n     */\n    ;\n\n    _proto.handleTechPosterChange_ = function handleTechPosterChange_() {\n      if ((!this.poster_ || this.options_.techCanOverridePoster) && this.tech_ && this.tech_.poster) {\n        var newPoster = this.tech_.poster() || '';\n\n        if (newPoster !== this.poster_) {\n          this.poster_ = newPoster;\n          this.isPosterFromTech_ = true; // Let components know the poster has changed\n\n          this.trigger('posterchange');\n        }\n      }\n    }\n    /**\n     * Get or set whether or not the controls are showing.\n     *\n     * @fires Player#controlsenabled\n     *\n     * @param {boolean} [bool]\n     *        - true to turn controls on\n     *        - false to turn controls off\n     *\n     * @return {boolean}\n     *         The current value of controls when getting\n     */\n    ;\n\n    _proto.controls = function controls(bool) {\n      if (bool === undefined) {\n        return !!this.controls_;\n      }\n\n      bool = !!bool; // Don't trigger a change event unless it actually changed\n\n      if (this.controls_ === bool) {\n        return;\n      }\n\n      this.controls_ = bool;\n\n      if (this.usingNativeControls()) {\n        this.techCall_('setControls', bool);\n      }\n\n      if (this.controls_) {\n        this.removeClass('vjs-controls-disabled');\n        this.addClass('vjs-controls-enabled');\n        /**\n         * @event Player#controlsenabled\n         * @type {EventTarget~Event}\n         */\n\n        this.trigger('controlsenabled');\n\n        if (!this.usingNativeControls()) {\n          this.addTechControlsListeners_();\n        }\n      } else {\n        this.removeClass('vjs-controls-enabled');\n        this.addClass('vjs-controls-disabled');\n        /**\n         * @event Player#controlsdisabled\n         * @type {EventTarget~Event}\n         */\n\n        this.trigger('controlsdisabled');\n\n        if (!this.usingNativeControls()) {\n          this.removeTechControlsListeners_();\n        }\n      }\n    }\n    /**\n     * Toggle native controls on/off. Native controls are the controls built into\n     * devices (e.g. default iPhone controls), Flash, or other techs\n     * (e.g. Vimeo Controls)\n     * **This should only be set by the current tech, because only the tech knows\n     * if it can support native controls**\n     *\n     * @fires Player#usingnativecontrols\n     * @fires Player#usingcustomcontrols\n     *\n     * @param {boolean} [bool]\n     *        - true to turn native controls on\n     *        - false to turn native controls off\n     *\n     * @return {boolean}\n     *         The current value of native controls when getting\n     */\n    ;\n\n    _proto.usingNativeControls = function usingNativeControls(bool) {\n      if (bool === undefined) {\n        return !!this.usingNativeControls_;\n      }\n\n      bool = !!bool; // Don't trigger a change event unless it actually changed\n\n      if (this.usingNativeControls_ === bool) {\n        return;\n      }\n\n      this.usingNativeControls_ = bool;\n\n      if (this.usingNativeControls_) {\n        this.addClass('vjs-using-native-controls');\n        /**\n         * player is using the native device controls\n         *\n         * @event Player#usingnativecontrols\n         * @type {EventTarget~Event}\n         */\n\n        this.trigger('usingnativecontrols');\n      } else {\n        this.removeClass('vjs-using-native-controls');\n        /**\n         * player is using the custom HTML controls\n         *\n         * @event Player#usingcustomcontrols\n         * @type {EventTarget~Event}\n         */\n\n        this.trigger('usingcustomcontrols');\n      }\n    }\n    /**\n     * Set or get the current MediaError\n     *\n     * @fires Player#error\n     *\n     * @param  {MediaError|string|number} [err]\n     *         A MediaError or a string/number to be turned\n     *         into a MediaError\n     *\n     * @return {MediaError|null}\n     *         The current MediaError when getting (or null)\n     */\n    ;\n\n    _proto.error = function error(err) {\n      if (err === undefined) {\n        return this.error_ || null;\n      } // restoring to default\n\n\n      if (err === null) {\n        this.error_ = err;\n        this.removeClass('vjs-error');\n\n        if (this.errorDisplay) {\n          this.errorDisplay.close();\n        }\n\n        return;\n      }\n\n      this.error_ = new MediaError(err); // add the vjs-error classname to the player\n\n      this.addClass('vjs-error'); // log the name of the error type and any message\n      // IE11 logs \"[object object]\" and required you to expand message to see error object\n\n      log.error(\"(CODE:\" + this.error_.code + \" \" + MediaError.errorTypes[this.error_.code] + \")\", this.error_.message, this.error_);\n      /**\n       * @event Player#error\n       * @type {EventTarget~Event}\n       */\n\n      this.trigger('error');\n      return;\n    }\n    /**\n     * Report user activity\n     *\n     * @param {Object} event\n     *        Event object\n     */\n    ;\n\n    _proto.reportUserActivity = function reportUserActivity(event) {\n      this.userActivity_ = true;\n    }\n    /**\n     * Get/set if user is active\n     *\n     * @fires Player#useractive\n     * @fires Player#userinactive\n     *\n     * @param {boolean} [bool]\n     *        - true if the user is active\n     *        - false if the user is inactive\n     *\n     * @return {boolean}\n     *         The current value of userActive when getting\n     */\n    ;\n\n    _proto.userActive = function userActive(bool) {\n      if (bool === undefined) {\n        return this.userActive_;\n      }\n\n      bool = !!bool;\n\n      if (bool === this.userActive_) {\n        return;\n      }\n\n      this.userActive_ = bool;\n\n      if (this.userActive_) {\n        this.userActivity_ = true;\n        this.removeClass('vjs-user-inactive');\n        this.addClass('vjs-user-active');\n        /**\n         * @event Player#useractive\n         * @type {EventTarget~Event}\n         */\n\n        this.trigger('useractive');\n        return;\n      } // Chrome/Safari/IE have bugs where when you change the cursor it can\n      // trigger a mousemove event. This causes an issue when you're hiding\n      // the cursor when the user is inactive, and a mousemove signals user\n      // activity. Making it impossible to go into inactive mode. Specifically\n      // this happens in fullscreen when we really need to hide the cursor.\n      //\n      // When this gets resolved in ALL browsers it can be removed\n      // https://code.google.com/p/chromium/issues/detail?id=103041\n\n\n      if (this.tech_) {\n        this.tech_.one('mousemove', function (e) {\n          e.stopPropagation();\n          e.preventDefault();\n        });\n      }\n\n      this.userActivity_ = false;\n      this.removeClass('vjs-user-active');\n      this.addClass('vjs-user-inactive');\n      /**\n       * @event Player#userinactive\n       * @type {EventTarget~Event}\n       */\n\n      this.trigger('userinactive');\n    }\n    /**\n     * Listen for user activity based on timeout value\n     *\n     * @private\n     */\n    ;\n\n    _proto.listenForUserActivity_ = function listenForUserActivity_() {\n      var mouseInProgress;\n      var lastMoveX;\n      var lastMoveY;\n      var handleActivity = bind(this, this.reportUserActivity);\n\n      var handleMouseMove = function handleMouseMove(e) {\n        // #1068 - Prevent mousemove spamming\n        // Chrome Bug: https://code.google.com/p/chromium/issues/detail?id=366970\n        if (e.screenX !== lastMoveX || e.screenY !== lastMoveY) {\n          lastMoveX = e.screenX;\n          lastMoveY = e.screenY;\n          handleActivity();\n        }\n      };\n\n      var handleMouseDown = function handleMouseDown() {\n        handleActivity(); // For as long as the they are touching the device or have their mouse down,\n        // we consider them active even if they're not moving their finger or mouse.\n        // So we want to continue to update that they are active\n\n        this.clearInterval(mouseInProgress); // Setting userActivity=true now and setting the interval to the same time\n        // as the activityCheck interval (250) should ensure we never miss the\n        // next activityCheck\n\n        mouseInProgress = this.setInterval(handleActivity, 250);\n      };\n\n      var handleMouseUp = function handleMouseUp(event) {\n        handleActivity(); // Stop the interval that maintains activity if the mouse/touch is down\n\n        this.clearInterval(mouseInProgress);\n      }; // Any mouse movement will be considered user activity\n\n\n      this.on('mousedown', handleMouseDown);\n      this.on('mousemove', handleMouseMove);\n      this.on('mouseup', handleMouseUp);\n      var controlBar = this.getChild('controlBar');\n\n      if (controlBar) {\n        controlBar.on('mouseenter', function (event) {\n          this.player().cache_.inactivityTimeout = this.player().options_.inactivityTimeout;\n          this.player().options_.inactivityTimeout = 0;\n        });\n        controlBar.on('mouseleave', function (event) {\n          this.player().options_.inactivityTimeout = this.player().cache_.inactivityTimeout;\n        });\n      } // Listen for keyboard navigation\n      // Shouldn't need to use inProgress interval because of key repeat\n\n\n      this.on('keydown', handleActivity);\n      this.on('keyup', handleActivity); // Run an interval every 250 milliseconds instead of stuffing everything into\n      // the mousemove/touchmove function itself, to prevent performance degradation.\n      // `this.reportUserActivity` simply sets this.userActivity_ to true, which\n      // then gets picked up by this loop\n      // http://ejohn.org/blog/learning-from-twitter/\n\n      var inactivityTimeout;\n      this.setInterval(function () {\n        // Check to see if mouse/touch activity has happened\n        if (!this.userActivity_) {\n          return;\n        } // Reset the activity tracker\n\n\n        this.userActivity_ = false; // If the user state was inactive, set the state to active\n\n        this.userActive(true); // Clear any existing inactivity timeout to start the timer over\n\n        this.clearTimeout(inactivityTimeout);\n        var timeout = this.options_.inactivityTimeout;\n\n        if (timeout <= 0) {\n          return;\n        } // In <timeout> milliseconds, if no more activity has occurred the\n        // user will be considered inactive\n\n\n        inactivityTimeout = this.setTimeout(function () {\n          // Protect against the case where the inactivityTimeout can trigger just\n          // before the next user activity is picked up by the activity check loop\n          // causing a flicker\n          if (!this.userActivity_) {\n            this.userActive(false);\n          }\n        }, timeout);\n      }, 250);\n    }\n    /**\n     * Gets or sets the current playback rate. A playback rate of\n     * 1.0 represents normal speed and 0.5 would indicate half-speed\n     * playback, for instance.\n     *\n     * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-media-playbackrate\n     *\n     * @param {number} [rate]\n     *       New playback rate to set.\n     *\n     * @return {number}\n     *         The current playback rate when getting or 1.0\n     */\n    ;\n\n    _proto.playbackRate = function playbackRate(rate) {\n      if (rate !== undefined) {\n        // NOTE: this.cache_.lastPlaybackRate is set from the tech handler\n        // that is registered above\n        this.techCall_('setPlaybackRate', rate);\n        return;\n      }\n\n      if (this.tech_ && this.tech_.featuresPlaybackRate) {\n        return this.cache_.lastPlaybackRate || this.techGet_('playbackRate');\n      }\n\n      return 1.0;\n    }\n    /**\n     * Gets or sets the current default playback rate. A default playback rate of\n     * 1.0 represents normal speed and 0.5 would indicate half-speed playback, for instance.\n     * defaultPlaybackRate will only represent what the initial playbackRate of a video was, not\n     * not the current playbackRate.\n     *\n     * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-media-defaultplaybackrate\n     *\n     * @param {number} [rate]\n     *       New default playback rate to set.\n     *\n     * @return {number|Player}\n     *         - The default playback rate when getting or 1.0\n     *         - the player when setting\n     */\n    ;\n\n    _proto.defaultPlaybackRate = function defaultPlaybackRate(rate) {\n      if (rate !== undefined) {\n        return this.techCall_('setDefaultPlaybackRate', rate);\n      }\n\n      if (this.tech_ && this.tech_.featuresPlaybackRate) {\n        return this.techGet_('defaultPlaybackRate');\n      }\n\n      return 1.0;\n    }\n    /**\n     * Gets or sets the audio flag\n     *\n     * @param {boolean} bool\n     *        - true signals that this is an audio player\n     *        - false signals that this is not an audio player\n     *\n     * @return {boolean}\n     *         The current value of isAudio when getting\n     */\n    ;\n\n    _proto.isAudio = function isAudio(bool) {\n      if (bool !== undefined) {\n        this.isAudio_ = !!bool;\n        return;\n      }\n\n      return !!this.isAudio_;\n    }\n    /**\n     * A helper method for adding a {@link TextTrack} to our\n     * {@link TextTrackList}.\n     *\n     * In addition to the W3C settings we allow adding additional info through options.\n     *\n     * @see http://www.w3.org/html/wg/drafts/html/master/embedded-content-0.html#dom-media-addtexttrack\n     *\n     * @param {string} [kind]\n     *        the kind of TextTrack you are adding\n     *\n     * @param {string} [label]\n     *        the label to give the TextTrack label\n     *\n     * @param {string} [language]\n     *        the language to set on the TextTrack\n     *\n     * @return {TextTrack|undefined}\n     *         the TextTrack that was added or undefined\n     *         if there is no tech\n     */\n    ;\n\n    _proto.addTextTrack = function addTextTrack(kind, label, language) {\n      if (this.tech_) {\n        return this.tech_.addTextTrack(kind, label, language);\n      }\n    }\n    /**\n     * Create a remote {@link TextTrack} and an {@link HTMLTrackElement}. It will\n     * automatically removed from the video element whenever the source changes, unless\n     * manualCleanup is set to false.\n     *\n     * @param {Object} options\n     *        Options to pass to {@link HTMLTrackElement} during creation. See\n     *        {@link HTMLTrackElement} for object properties that you should use.\n     *\n     * @param {boolean} [manualCleanup=true] if set to false, the TextTrack will be\n     *\n     * @return {HtmlTrackElement}\n     *         the HTMLTrackElement that was created and added\n     *         to the HtmlTrackElementList and the remote\n     *         TextTrackList\n     *\n     * @deprecated The default value of the \"manualCleanup\" parameter will default\n     *             to \"false\" in upcoming versions of Video.js\n     */\n    ;\n\n    _proto.addRemoteTextTrack = function addRemoteTextTrack(options, manualCleanup) {\n      if (this.tech_) {\n        return this.tech_.addRemoteTextTrack(options, manualCleanup);\n      }\n    }\n    /**\n     * Remove a remote {@link TextTrack} from the respective\n     * {@link TextTrackList} and {@link HtmlTrackElementList}.\n     *\n     * @param {Object} track\n     *        Remote {@link TextTrack} to remove\n     *\n     * @return {undefined}\n     *         does not return anything\n     */\n    ;\n\n    _proto.removeRemoteTextTrack = function removeRemoteTextTrack(obj) {\n      if (obj === void 0) {\n        obj = {};\n      }\n\n      var _obj = obj,\n          track = _obj.track;\n\n      if (!track) {\n        track = obj;\n      } // destructure the input into an object with a track argument, defaulting to arguments[0]\n      // default the whole argument to an empty object if nothing was passed in\n\n\n      if (this.tech_) {\n        return this.tech_.removeRemoteTextTrack(track);\n      }\n    }\n    /**\n     * Gets available media playback quality metrics as specified by the W3C's Media\n     * Playback Quality API.\n     *\n     * @see [Spec]{@link https://wicg.github.io/media-playback-quality}\n     *\n     * @return {Object|undefined}\n     *         An object with supported media playback quality metrics or undefined if there\n     *         is no tech or the tech does not support it.\n     */\n    ;\n\n    _proto.getVideoPlaybackQuality = function getVideoPlaybackQuality() {\n      return this.techGet_('getVideoPlaybackQuality');\n    }\n    /**\n     * Get video width\n     *\n     * @return {number}\n     *         current video width\n     */\n    ;\n\n    _proto.videoWidth = function videoWidth() {\n      return this.tech_ && this.tech_.videoWidth && this.tech_.videoWidth() || 0;\n    }\n    /**\n     * Get video height\n     *\n     * @return {number}\n     *         current video height\n     */\n    ;\n\n    _proto.videoHeight = function videoHeight() {\n      return this.tech_ && this.tech_.videoHeight && this.tech_.videoHeight() || 0;\n    }\n    /**\n     * The player's language code\n     * NOTE: The language should be set in the player options if you want the\n     * the controls to be built with a specific language. Changing the language\n     * later will not update controls text.\n     *\n     * @param {string} [code]\n     *        the language code to set the player to\n     *\n     * @return {string}\n     *         The current language code when getting\n     */\n    ;\n\n    _proto.language = function language(code) {\n      if (code === undefined) {\n        return this.language_;\n      }\n\n      this.language_ = String(code).toLowerCase();\n    }\n    /**\n     * Get the player's language dictionary\n     * Merge every time, because a newly added plugin might call videojs.addLanguage() at any time\n     * Languages specified directly in the player options have precedence\n     *\n     * @return {Array}\n     *         An array of of supported languages\n     */\n    ;\n\n    _proto.languages = function languages() {\n      return mergeOptions(Player.prototype.options_.languages, this.languages_);\n    }\n    /**\n     * returns a JavaScript object reperesenting the current track\n     * information. **DOES not return it as JSON**\n     *\n     * @return {Object}\n     *         Object representing the current of track info\n     */\n    ;\n\n    _proto.toJSON = function toJSON() {\n      var options = mergeOptions(this.options_);\n      var tracks = options.tracks;\n      options.tracks = [];\n\n      for (var i = 0; i < tracks.length; i++) {\n        var track = tracks[i]; // deep merge tracks and null out player so no circular references\n\n        track = mergeOptions(track);\n        track.player = undefined;\n        options.tracks[i] = track;\n      }\n\n      return options;\n    }\n    /**\n     * Creates a simple modal dialog (an instance of the {@link ModalDialog}\n     * component) that immediately overlays the player with arbitrary\n     * content and removes itself when closed.\n     *\n     * @param {string|Function|Element|Array|null} content\n     *        Same as {@link ModalDialog#content}'s param of the same name.\n     *        The most straight-forward usage is to provide a string or DOM\n     *        element.\n     *\n     * @param {Object} [options]\n     *        Extra options which will be passed on to the {@link ModalDialog}.\n     *\n     * @return {ModalDialog}\n     *         the {@link ModalDialog} that was created\n     */\n    ;\n\n    _proto.createModal = function createModal(content, options) {\n      var _this12 = this;\n\n      options = options || {};\n      options.content = content || '';\n      var modal = new ModalDialog(this, options);\n      this.addChild(modal);\n      modal.on('dispose', function () {\n        _this12.removeChild(modal);\n      });\n      modal.open();\n      return modal;\n    }\n    /**\n     * Change breakpoint classes when the player resizes.\n     *\n     * @private\n     */\n    ;\n\n    _proto.updateCurrentBreakpoint_ = function updateCurrentBreakpoint_() {\n      if (!this.responsive()) {\n        return;\n      }\n\n      var currentBreakpoint = this.currentBreakpoint();\n      var currentWidth = this.currentWidth();\n\n      for (var i = 0; i < BREAKPOINT_ORDER.length; i++) {\n        var candidateBreakpoint = BREAKPOINT_ORDER[i];\n        var maxWidth = this.breakpoints_[candidateBreakpoint];\n\n        if (currentWidth <= maxWidth) {\n          // The current breakpoint did not change, nothing to do.\n          if (currentBreakpoint === candidateBreakpoint) {\n            return;\n          } // Only remove a class if there is a current breakpoint.\n\n\n          if (currentBreakpoint) {\n            this.removeClass(BREAKPOINT_CLASSES[currentBreakpoint]);\n          }\n\n          this.addClass(BREAKPOINT_CLASSES[candidateBreakpoint]);\n          this.breakpoint_ = candidateBreakpoint;\n          break;\n        }\n      }\n    }\n    /**\n     * Removes the current breakpoint.\n     *\n     * @private\n     */\n    ;\n\n    _proto.removeCurrentBreakpoint_ = function removeCurrentBreakpoint_() {\n      var className = this.currentBreakpointClass();\n      this.breakpoint_ = '';\n\n      if (className) {\n        this.removeClass(className);\n      }\n    }\n    /**\n     * Get or set breakpoints on the player.\n     *\n     * Calling this method with an object or `true` will remove any previous\n     * custom breakpoints and start from the defaults again.\n     *\n     * @param  {Object|boolean} [breakpoints]\n     *         If an object is given, it can be used to provide custom\n     *         breakpoints. If `true` is given, will set default breakpoints.\n     *         If this argument is not given, will simply return the current\n     *         breakpoints.\n     *\n     * @param  {number} [breakpoints.tiny]\n     *         The maximum width for the \"vjs-layout-tiny\" class.\n     *\n     * @param  {number} [breakpoints.xsmall]\n     *         The maximum width for the \"vjs-layout-x-small\" class.\n     *\n     * @param  {number} [breakpoints.small]\n     *         The maximum width for the \"vjs-layout-small\" class.\n     *\n     * @param  {number} [breakpoints.medium]\n     *         The maximum width for the \"vjs-layout-medium\" class.\n     *\n     * @param  {number} [breakpoints.large]\n     *         The maximum width for the \"vjs-layout-large\" class.\n     *\n     * @param  {number} [breakpoints.xlarge]\n     *         The maximum width for the \"vjs-layout-x-large\" class.\n     *\n     * @param  {number} [breakpoints.huge]\n     *         The maximum width for the \"vjs-layout-huge\" class.\n     *\n     * @return {Object}\n     *         An object mapping breakpoint names to maximum width values.\n     */\n    ;\n\n    _proto.breakpoints = function breakpoints(_breakpoints) {\n      // Used as a getter.\n      if (_breakpoints === undefined) {\n        return assign(this.breakpoints_);\n      }\n\n      this.breakpoint_ = '';\n      this.breakpoints_ = assign({}, DEFAULT_BREAKPOINTS, _breakpoints); // When breakpoint definitions change, we need to update the currently\n      // selected breakpoint.\n\n      this.updateCurrentBreakpoint_(); // Clone the breakpoints before returning.\n\n      return assign(this.breakpoints_);\n    }\n    /**\n     * Get or set a flag indicating whether or not this player should adjust\n     * its UI based on its dimensions.\n     *\n     * @param  {boolean} value\n     *         Should be `true` if the player should adjust its UI based on its\n     *         dimensions; otherwise, should be `false`.\n     *\n     * @return {boolean}\n     *         Will be `true` if this player should adjust its UI based on its\n     *         dimensions; otherwise, will be `false`.\n     */\n    ;\n\n    _proto.responsive = function responsive(value) {\n      // Used as a getter.\n      if (value === undefined) {\n        return this.responsive_;\n      }\n\n      value = Boolean(value);\n      var current = this.responsive_; // Nothing changed.\n\n      if (value === current) {\n        return;\n      } // The value actually changed, set it.\n\n\n      this.responsive_ = value; // Start listening for breakpoints and set the initial breakpoint if the\n      // player is now responsive.\n\n      if (value) {\n        this.on('playerresize', this.updateCurrentBreakpoint_);\n        this.updateCurrentBreakpoint_(); // Stop listening for breakpoints if the player is no longer responsive.\n      } else {\n        this.off('playerresize', this.updateCurrentBreakpoint_);\n        this.removeCurrentBreakpoint_();\n      }\n\n      return value;\n    }\n    /**\n     * Get current breakpoint name, if any.\n     *\n     * @return {string}\n     *         If there is currently a breakpoint set, returns a the key from the\n     *         breakpoints object matching it. Otherwise, returns an empty string.\n     */\n    ;\n\n    _proto.currentBreakpoint = function currentBreakpoint() {\n      return this.breakpoint_;\n    }\n    /**\n     * Get the current breakpoint class name.\n     *\n     * @return {string}\n     *         The matching class name (e.g. `\"vjs-layout-tiny\"` or\n     *         `\"vjs-layout-large\"`) for the current breakpoint. Empty string if\n     *         there is no current breakpoint.\n     */\n    ;\n\n    _proto.currentBreakpointClass = function currentBreakpointClass() {\n      return BREAKPOINT_CLASSES[this.breakpoint_] || '';\n    }\n    /**\n     * An object that describes a single piece of media.\n     *\n     * Properties that are not part of this type description will be retained; so,\n     * this can be viewed as a generic metadata storage mechanism as well.\n     *\n     * @see      {@link https://wicg.github.io/mediasession/#the-mediametadata-interface}\n     * @typedef  {Object} Player~MediaObject\n     *\n     * @property {string} [album]\n     *           Unused, except if this object is passed to the `MediaSession`\n     *           API.\n     *\n     * @property {string} [artist]\n     *           Unused, except if this object is passed to the `MediaSession`\n     *           API.\n     *\n     * @property {Object[]} [artwork]\n     *           Unused, except if this object is passed to the `MediaSession`\n     *           API. If not specified, will be populated via the `poster`, if\n     *           available.\n     *\n     * @property {string} [poster]\n     *           URL to an image that will display before playback.\n     *\n     * @property {Tech~SourceObject|Tech~SourceObject[]|string} [src]\n     *           A single source object, an array of source objects, or a string\n     *           referencing a URL to a media source. It is _highly recommended_\n     *           that an object or array of objects is used here, so that source\n     *           selection algorithms can take the `type` into account.\n     *\n     * @property {string} [title]\n     *           Unused, except if this object is passed to the `MediaSession`\n     *           API.\n     *\n     * @property {Object[]} [textTracks]\n     *           An array of objects to be used to create text tracks, following\n     *           the {@link https://www.w3.org/TR/html50/embedded-content-0.html#the-track-element|native track element format}.\n     *           For ease of removal, these will be created as \"remote\" text\n     *           tracks and set to automatically clean up on source changes.\n     *\n     *           These objects may have properties like `src`, `kind`, `label`,\n     *           and `language`, see {@link Tech#createRemoteTextTrack}.\n     */\n\n    /**\n     * Populate the player using a {@link Player~MediaObject|MediaObject}.\n     *\n     * @param  {Player~MediaObject} media\n     *         A media object.\n     *\n     * @param  {Function} ready\n     *         A callback to be called when the player is ready.\n     */\n    ;\n\n    _proto.loadMedia = function loadMedia(media, ready) {\n      var _this13 = this;\n\n      if (!media || typeof media !== 'object') {\n        return;\n      }\n\n      this.reset(); // Clone the media object so it cannot be mutated from outside.\n\n      this.cache_.media = mergeOptions(media);\n      var _this$cache_$media = this.cache_.media,\n          artwork = _this$cache_$media.artwork,\n          poster = _this$cache_$media.poster,\n          src = _this$cache_$media.src,\n          textTracks = _this$cache_$media.textTracks; // If `artwork` is not given, create it using `poster`.\n\n      if (!artwork && poster) {\n        this.cache_.media.artwork = [{\n          src: poster,\n          type: getMimetype(poster)\n        }];\n      }\n\n      if (src) {\n        this.src(src);\n      }\n\n      if (poster) {\n        this.poster(poster);\n      }\n\n      if (Array.isArray(textTracks)) {\n        textTracks.forEach(function (tt) {\n          return _this13.addRemoteTextTrack(tt, false);\n        });\n      }\n\n      this.ready(ready);\n    }\n    /**\n     * Get a clone of the current {@link Player~MediaObject} for this player.\n     *\n     * If the `loadMedia` method has not been used, will attempt to return a\n     * {@link Player~MediaObject} based on the current state of the player.\n     *\n     * @return {Player~MediaObject}\n     */\n    ;\n\n    _proto.getMedia = function getMedia() {\n      if (!this.cache_.media) {\n        var poster = this.poster();\n        var src = this.currentSources();\n        var textTracks = Array.prototype.map.call(this.remoteTextTracks(), function (tt) {\n          return {\n            kind: tt.kind,\n            label: tt.label,\n            language: tt.language,\n            src: tt.src\n          };\n        });\n        var media = {\n          src: src,\n          textTracks: textTracks\n        };\n\n        if (poster) {\n          media.poster = poster;\n          media.artwork = [{\n            src: media.poster,\n            type: getMimetype(media.poster)\n          }];\n        }\n\n        return media;\n      }\n\n      return mergeOptions(this.cache_.media);\n    }\n    /**\n     * Gets tag settings\n     *\n     * @param {Element} tag\n     *        The player tag\n     *\n     * @return {Object}\n     *         An object containing all of the settings\n     *         for a player tag\n     */\n    ;\n\n    Player.getTagSettings = function getTagSettings(tag) {\n      var baseOptions = {\n        sources: [],\n        tracks: []\n      };\n      var tagOptions = getAttributes(tag);\n      var dataSetup = tagOptions['data-setup'];\n\n      if (hasClass(tag, 'vjs-fill')) {\n        tagOptions.fill = true;\n      }\n\n      if (hasClass(tag, 'vjs-fluid')) {\n        tagOptions.fluid = true;\n      } // Check if data-setup attr exists.\n\n\n      if (dataSetup !== null) {\n        // Parse options JSON\n        // If empty string, make it a parsable json object.\n        var _safeParseTuple = tuple(dataSetup || '{}'),\n            err = _safeParseTuple[0],\n            data = _safeParseTuple[1];\n\n        if (err) {\n          log.error(err);\n        }\n\n        assign(tagOptions, data);\n      }\n\n      assign(baseOptions, tagOptions); // Get tag children settings\n\n      if (tag.hasChildNodes()) {\n        var children = tag.childNodes;\n\n        for (var i = 0, j = children.length; i < j; i++) {\n          var child = children[i]; // Change case needed: http://ejohn.org/blog/nodename-case-sensitivity/\n\n          var childName = child.nodeName.toLowerCase();\n\n          if (childName === 'source') {\n            baseOptions.sources.push(getAttributes(child));\n          } else if (childName === 'track') {\n            baseOptions.tracks.push(getAttributes(child));\n          }\n        }\n      }\n\n      return baseOptions;\n    }\n    /**\n     * Determine whether or not flexbox is supported\n     *\n     * @return {boolean}\n     *         - true if flexbox is supported\n     *         - false if flexbox is not supported\n     */\n    ;\n\n    _proto.flexNotSupported_ = function flexNotSupported_() {\n      var elem = document.createElement('i'); // Note: We don't actually use flexBasis (or flexOrder), but it's one of the more\n      // common flex features that we can rely on when checking for flex support.\n\n      return !('flexBasis' in elem.style || 'webkitFlexBasis' in elem.style || 'mozFlexBasis' in elem.style || 'msFlexBasis' in elem.style || // IE10-specific (2012 flex spec), available for completeness\n      'msFlexOrder' in elem.style);\n    };\n\n    return Player;\n  }(Component);\n  /**\n   * Get the {@link VideoTrackList}\n   * @link https://html.spec.whatwg.org/multipage/embedded-content.html#videotracklist\n   *\n   * @return {VideoTrackList}\n   *         the current video track list\n   *\n   * @method Player.prototype.videoTracks\n   */\n\n  /**\n   * Get the {@link AudioTrackList}\n   * @link https://html.spec.whatwg.org/multipage/embedded-content.html#audiotracklist\n   *\n   * @return {AudioTrackList}\n   *         the current audio track list\n   *\n   * @method Player.prototype.audioTracks\n   */\n\n  /**\n   * Get the {@link TextTrackList}\n   *\n   * @link http://www.w3.org/html/wg/drafts/html/master/embedded-content-0.html#dom-media-texttracks\n   *\n   * @return {TextTrackList}\n   *         the current text track list\n   *\n   * @method Player.prototype.textTracks\n   */\n\n  /**\n   * Get the remote {@link TextTrackList}\n   *\n   * @return {TextTrackList}\n   *         The current remote text track list\n   *\n   * @method Player.prototype.remoteTextTracks\n   */\n\n  /**\n   * Get the remote {@link HtmlTrackElementList} tracks.\n   *\n   * @return {HtmlTrackElementList}\n   *         The current remote text track element list\n   *\n   * @method Player.prototype.remoteTextTrackEls\n   */\n\n\n  ALL.names.forEach(function (name$$1) {\n    var props = ALL[name$$1];\n\n    Player.prototype[props.getterName] = function () {\n      if (this.tech_) {\n        return this.tech_[props.getterName]();\n      } // if we have not yet loadTech_, we create {video,audio,text}Tracks_\n      // these will be passed to the tech during loading\n\n\n      this[props.privateName] = this[props.privateName] || new props.ListClass();\n      return this[props.privateName];\n    };\n  });\n  /**\n   * Global enumeration of players.\n   *\n   * The keys are the player IDs and the values are either the {@link Player}\n   * instance or `null` for disposed players.\n   *\n   * @type {Object}\n   */\n\n  Player.players = {};\n  var navigator = window$1.navigator;\n  /*\n   * Player instance options, surfaced using options\n   * options = Player.prototype.options_\n   * Make changes in options, not here.\n   *\n   * @type {Object}\n   * @private\n   */\n\n  Player.prototype.options_ = {\n    // Default order of fallback technology\n    techOrder: Tech.defaultTechOrder_,\n    html5: {},\n    flash: {},\n    // default inactivity timeout\n    inactivityTimeout: 2000,\n    // default playback rates\n    playbackRates: [],\n    // Add playback rate selection by adding rates\n    // 'playbackRates': [0.5, 1, 1.5, 2],\n    liveui: false,\n    // Included control sets\n    children: ['mediaLoader', 'posterImage', 'textTrackDisplay', 'loadingSpinner', 'bigPlayButton', 'liveTracker', 'controlBar', 'errorDisplay', 'textTrackSettings', 'resizeManager'],\n    language: navigator && (navigator.languages && navigator.languages[0] || navigator.userLanguage || navigator.language) || 'en',\n    // locales and their language translations\n    languages: {},\n    // Default message to show when a video cannot be played.\n    notSupportedMessage: 'No compatible source was found for this media.',\n    breakpoints: {},\n    responsive: false\n  };\n  [\n  /**\n   * Returns whether or not the player is in the \"ended\" state.\n   *\n   * @return {Boolean} True if the player is in the ended state, false if not.\n   * @method Player#ended\n   */\n  'ended',\n  /**\n   * Returns whether or not the player is in the \"seeking\" state.\n   *\n   * @return {Boolean} True if the player is in the seeking state, false if not.\n   * @method Player#seeking\n   */\n  'seeking',\n  /**\n   * Returns the TimeRanges of the media that are currently available\n   * for seeking to.\n   *\n   * @return {TimeRanges} the seekable intervals of the media timeline\n   * @method Player#seekable\n   */\n  'seekable',\n  /**\n   * Returns the current state of network activity for the element, from\n   * the codes in the list below.\n   * - NETWORK_EMPTY (numeric value 0)\n   *   The element has not yet been initialised. All attributes are in\n   *   their initial states.\n   * - NETWORK_IDLE (numeric value 1)\n   *   The element's resource selection algorithm is active and has\n   *   selected a resource, but it is not actually using the network at\n   *   this time.\n   * - NETWORK_LOADING (numeric value 2)\n   *   The user agent is actively trying to download data.\n   * - NETWORK_NO_SOURCE (numeric value 3)\n   *   The element's resource selection algorithm is active, but it has\n   *   not yet found a resource to use.\n   *\n   * @see https://html.spec.whatwg.org/multipage/embedded-content.html#network-states\n   * @return {number} the current network activity state\n   * @method Player#networkState\n   */\n  'networkState',\n  /**\n   * Returns a value that expresses the current state of the element\n   * with respect to rendering the current playback position, from the\n   * codes in the list below.\n   * - HAVE_NOTHING (numeric value 0)\n   *   No information regarding the media resource is available.\n   * - HAVE_METADATA (numeric value 1)\n   *   Enough of the resource has been obtained that the duration of the\n   *   resource is available.\n   * - HAVE_CURRENT_DATA (numeric value 2)\n   *   Data for the immediate current playback position is available.\n   * - HAVE_FUTURE_DATA (numeric value 3)\n   *   Data for the immediate current playback position is available, as\n   *   well as enough data for the user agent to advance the current\n   *   playback position in the direction of playback.\n   * - HAVE_ENOUGH_DATA (numeric value 4)\n   *   The user agent estimates that enough data is available for\n   *   playback to proceed uninterrupted.\n   *\n   * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-media-readystate\n   * @return {number} the current playback rendering state\n   * @method Player#readyState\n   */\n  'readyState'].forEach(function (fn) {\n    Player.prototype[fn] = function () {\n      return this.techGet_(fn);\n    };\n  });\n  TECH_EVENTS_RETRIGGER.forEach(function (event) {\n    Player.prototype[\"handleTech\" + toTitleCase(event) + \"_\"] = function () {\n      return this.trigger(event);\n    };\n  });\n  /**\n   * Fired when the player has initial duration and dimension information\n   *\n   * @event Player#loadedmetadata\n   * @type {EventTarget~Event}\n   */\n\n  /**\n   * Fired when the player has downloaded data at the current playback position\n   *\n   * @event Player#loadeddata\n   * @type {EventTarget~Event}\n   */\n\n  /**\n   * Fired when the current playback position has changed *\n   * During playback this is fired every 15-250 milliseconds, depending on the\n   * playback technology in use.\n   *\n   * @event Player#timeupdate\n   * @type {EventTarget~Event}\n   */\n\n  /**\n   * Fired when the volume changes\n   *\n   * @event Player#volumechange\n   * @type {EventTarget~Event}\n   */\n\n  /**\n   * Reports whether or not a player has a plugin available.\n   *\n   * This does not report whether or not the plugin has ever been initialized\n   * on this player. For that, [usingPlugin]{@link Player#usingPlugin}.\n   *\n   * @method Player#hasPlugin\n   * @param  {string}  name\n   *         The name of a plugin.\n   *\n   * @return {boolean}\n   *         Whether or not this player has the requested plugin available.\n   */\n\n  /**\n   * Reports whether or not a player is using a plugin by name.\n   *\n   * For basic plugins, this only reports whether the plugin has _ever_ been\n   * initialized on this player.\n   *\n   * @method Player#usingPlugin\n   * @param  {string} name\n   *         The name of a plugin.\n   *\n   * @return {boolean}\n   *         Whether or not this player is using the requested plugin.\n   */\n\n  Component.registerComponent('Player', Player);\n\n  /**\n   * The base plugin name.\n   *\n   * @private\n   * @constant\n   * @type {string}\n   */\n\n  var BASE_PLUGIN_NAME = 'plugin';\n  /**\n   * The key on which a player's active plugins cache is stored.\n   *\n   * @private\n   * @constant\n   * @type     {string}\n   */\n\n  var PLUGIN_CACHE_KEY = 'activePlugins_';\n  /**\n   * Stores registered plugins in a private space.\n   *\n   * @private\n   * @type    {Object}\n   */\n\n  var pluginStorage = {};\n  /**\n   * Reports whether or not a plugin has been registered.\n   *\n   * @private\n   * @param   {string} name\n   *          The name of a plugin.\n   *\n   * @return {boolean}\n   *          Whether or not the plugin has been registered.\n   */\n\n  var pluginExists = function pluginExists(name) {\n    return pluginStorage.hasOwnProperty(name);\n  };\n  /**\n   * Get a single registered plugin by name.\n   *\n   * @private\n   * @param   {string} name\n   *          The name of a plugin.\n   *\n   * @return {Function|undefined}\n   *          The plugin (or undefined).\n   */\n\n\n  var getPlugin = function getPlugin(name) {\n    return pluginExists(name) ? pluginStorage[name] : undefined;\n  };\n  /**\n   * Marks a plugin as \"active\" on a player.\n   *\n   * Also, ensures that the player has an object for tracking active plugins.\n   *\n   * @private\n   * @param   {Player} player\n   *          A Video.js player instance.\n   *\n   * @param   {string} name\n   *          The name of a plugin.\n   */\n\n\n  var markPluginAsActive = function markPluginAsActive(player, name) {\n    player[PLUGIN_CACHE_KEY] = player[PLUGIN_CACHE_KEY] || {};\n    player[PLUGIN_CACHE_KEY][name] = true;\n  };\n  /**\n   * Triggers a pair of plugin setup events.\n   *\n   * @private\n   * @param  {Player} player\n   *         A Video.js player instance.\n   *\n   * @param  {Plugin~PluginEventHash} hash\n   *         A plugin event hash.\n   *\n   * @param  {boolean} [before]\n   *         If true, prefixes the event name with \"before\". In other words,\n   *         use this to trigger \"beforepluginsetup\" instead of \"pluginsetup\".\n   */\n\n\n  var triggerSetupEvent = function triggerSetupEvent(player, hash, before) {\n    var eventName = (before ? 'before' : '') + 'pluginsetup';\n    player.trigger(eventName, hash);\n    player.trigger(eventName + ':' + hash.name, hash);\n  };\n  /**\n   * Takes a basic plugin function and returns a wrapper function which marks\n   * on the player that the plugin has been activated.\n   *\n   * @private\n   * @param   {string} name\n   *          The name of the plugin.\n   *\n   * @param   {Function} plugin\n   *          The basic plugin.\n   *\n   * @return {Function}\n   *          A wrapper function for the given plugin.\n   */\n\n\n  var createBasicPlugin = function createBasicPlugin(name, plugin) {\n    var basicPluginWrapper = function basicPluginWrapper() {\n      // We trigger the \"beforepluginsetup\" and \"pluginsetup\" events on the player\n      // regardless, but we want the hash to be consistent with the hash provided\n      // for advanced plugins.\n      //\n      // The only potentially counter-intuitive thing here is the `instance` in\n      // the \"pluginsetup\" event is the value returned by the `plugin` function.\n      triggerSetupEvent(this, {\n        name: name,\n        plugin: plugin,\n        instance: null\n      }, true);\n      var instance = plugin.apply(this, arguments);\n      markPluginAsActive(this, name);\n      triggerSetupEvent(this, {\n        name: name,\n        plugin: plugin,\n        instance: instance\n      });\n      return instance;\n    };\n\n    Object.keys(plugin).forEach(function (prop) {\n      basicPluginWrapper[prop] = plugin[prop];\n    });\n    return basicPluginWrapper;\n  };\n  /**\n   * Takes a plugin sub-class and returns a factory function for generating\n   * instances of it.\n   *\n   * This factory function will replace itself with an instance of the requested\n   * sub-class of Plugin.\n   *\n   * @private\n   * @param   {string} name\n   *          The name of the plugin.\n   *\n   * @param   {Plugin} PluginSubClass\n   *          The advanced plugin.\n   *\n   * @return {Function}\n   */\n\n\n  var createPluginFactory = function createPluginFactory(name, PluginSubClass) {\n    // Add a `name` property to the plugin prototype so that each plugin can\n    // refer to itself by name.\n    PluginSubClass.prototype.name = name;\n    return function () {\n      triggerSetupEvent(this, {\n        name: name,\n        plugin: PluginSubClass,\n        instance: null\n      }, true);\n\n      for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {\n        args[_key] = arguments[_key];\n      }\n\n      var instance = _construct(PluginSubClass, [this].concat(args)); // The plugin is replaced by a function that returns the current instance.\n\n\n      this[name] = function () {\n        return instance;\n      };\n\n      triggerSetupEvent(this, instance.getEventHash());\n      return instance;\n    };\n  };\n  /**\n   * Parent class for all advanced plugins.\n   *\n   * @mixes   module:evented~EventedMixin\n   * @mixes   module:stateful~StatefulMixin\n   * @fires   Player#beforepluginsetup\n   * @fires   Player#beforepluginsetup:$name\n   * @fires   Player#pluginsetup\n   * @fires   Player#pluginsetup:$name\n   * @listens Player#dispose\n   * @throws  {Error}\n   *          If attempting to instantiate the base {@link Plugin} class\n   *          directly instead of via a sub-class.\n   */\n\n\n  var Plugin =\n  /*#__PURE__*/\n  function () {\n    /**\n     * Creates an instance of this class.\n     *\n     * Sub-classes should call `super` to ensure plugins are properly initialized.\n     *\n     * @param {Player} player\n     *        A Video.js player instance.\n     */\n    function Plugin(player) {\n      if (this.constructor === Plugin) {\n        throw new Error('Plugin must be sub-classed; not directly instantiated.');\n      }\n\n      this.player = player; // Make this object evented, but remove the added `trigger` method so we\n      // use the prototype version instead.\n\n      evented(this);\n      delete this.trigger;\n      stateful(this, this.constructor.defaultState);\n      markPluginAsActive(player, this.name); // Auto-bind the dispose method so we can use it as a listener and unbind\n      // it later easily.\n\n      this.dispose = bind(this, this.dispose); // If the player is disposed, dispose the plugin.\n\n      player.on('dispose', this.dispose);\n    }\n    /**\n     * Get the version of the plugin that was set on <pluginName>.VERSION\n     */\n\n\n    var _proto = Plugin.prototype;\n\n    _proto.version = function version() {\n      return this.constructor.VERSION;\n    }\n    /**\n     * Each event triggered by plugins includes a hash of additional data with\n     * conventional properties.\n     *\n     * This returns that object or mutates an existing hash.\n     *\n     * @param   {Object} [hash={}]\n     *          An object to be used as event an event hash.\n     *\n     * @return {Plugin~PluginEventHash}\n     *          An event hash object with provided properties mixed-in.\n     */\n    ;\n\n    _proto.getEventHash = function getEventHash(hash) {\n      if (hash === void 0) {\n        hash = {};\n      }\n\n      hash.name = this.name;\n      hash.plugin = this.constructor;\n      hash.instance = this;\n      return hash;\n    }\n    /**\n     * Triggers an event on the plugin object and overrides\n     * {@link module:evented~EventedMixin.trigger|EventedMixin.trigger}.\n     *\n     * @param   {string|Object} event\n     *          An event type or an object with a type property.\n     *\n     * @param   {Object} [hash={}]\n     *          Additional data hash to merge with a\n     *          {@link Plugin~PluginEventHash|PluginEventHash}.\n     *\n     * @return {boolean}\n     *          Whether or not default was prevented.\n     */\n    ;\n\n    _proto.trigger = function trigger$$1(event, hash) {\n      if (hash === void 0) {\n        hash = {};\n      }\n\n      return trigger(this.eventBusEl_, event, this.getEventHash(hash));\n    }\n    /**\n     * Handles \"statechanged\" events on the plugin. No-op by default, override by\n     * subclassing.\n     *\n     * @abstract\n     * @param    {Event} e\n     *           An event object provided by a \"statechanged\" event.\n     *\n     * @param    {Object} e.changes\n     *           An object describing changes that occurred with the \"statechanged\"\n     *           event.\n     */\n    ;\n\n    _proto.handleStateChanged = function handleStateChanged(e) {}\n    /**\n     * Disposes a plugin.\n     *\n     * Subclasses can override this if they want, but for the sake of safety,\n     * it's probably best to subscribe the \"dispose\" event.\n     *\n     * @fires Plugin#dispose\n     */\n    ;\n\n    _proto.dispose = function dispose() {\n      var name = this.name,\n          player = this.player;\n      /**\n       * Signals that a advanced plugin is about to be disposed.\n       *\n       * @event Plugin#dispose\n       * @type  {EventTarget~Event}\n       */\n\n      this.trigger('dispose');\n      this.off();\n      player.off('dispose', this.dispose); // Eliminate any possible sources of leaking memory by clearing up\n      // references between the player and the plugin instance and nulling out\n      // the plugin's state and replacing methods with a function that throws.\n\n      player[PLUGIN_CACHE_KEY][name] = false;\n      this.player = this.state = null; // Finally, replace the plugin name on the player with a new factory\n      // function, so that the plugin is ready to be set up again.\n\n      player[name] = createPluginFactory(name, pluginStorage[name]);\n    }\n    /**\n     * Determines if a plugin is a basic plugin (i.e. not a sub-class of `Plugin`).\n     *\n     * @param   {string|Function} plugin\n     *          If a string, matches the name of a plugin. If a function, will be\n     *          tested directly.\n     *\n     * @return {boolean}\n     *          Whether or not a plugin is a basic plugin.\n     */\n    ;\n\n    Plugin.isBasic = function isBasic(plugin) {\n      var p = typeof plugin === 'string' ? getPlugin(plugin) : plugin;\n      return typeof p === 'function' && !Plugin.prototype.isPrototypeOf(p.prototype);\n    }\n    /**\n     * Register a Video.js plugin.\n     *\n     * @param   {string} name\n     *          The name of the plugin to be registered. Must be a string and\n     *          must not match an existing plugin or a method on the `Player`\n     *          prototype.\n     *\n     * @param   {Function} plugin\n     *          A sub-class of `Plugin` or a function for basic plugins.\n     *\n     * @return {Function}\n     *          For advanced plugins, a factory function for that plugin. For\n     *          basic plugins, a wrapper function that initializes the plugin.\n     */\n    ;\n\n    Plugin.registerPlugin = function registerPlugin(name, plugin) {\n      if (typeof name !== 'string') {\n        throw new Error(\"Illegal plugin name, \\\"\" + name + \"\\\", must be a string, was \" + typeof name + \".\");\n      }\n\n      if (pluginExists(name)) {\n        log.warn(\"A plugin named \\\"\" + name + \"\\\" already exists. You may want to avoid re-registering plugins!\");\n      } else if (Player.prototype.hasOwnProperty(name)) {\n        throw new Error(\"Illegal plugin name, \\\"\" + name + \"\\\", cannot share a name with an existing player method!\");\n      }\n\n      if (typeof plugin !== 'function') {\n        throw new Error(\"Illegal plugin for \\\"\" + name + \"\\\", must be a function, was \" + typeof plugin + \".\");\n      }\n\n      pluginStorage[name] = plugin; // Add a player prototype method for all sub-classed plugins (but not for\n      // the base Plugin class).\n\n      if (name !== BASE_PLUGIN_NAME) {\n        if (Plugin.isBasic(plugin)) {\n          Player.prototype[name] = createBasicPlugin(name, plugin);\n        } else {\n          Player.prototype[name] = createPluginFactory(name, plugin);\n        }\n      }\n\n      return plugin;\n    }\n    /**\n     * De-register a Video.js plugin.\n     *\n     * @param  {string} name\n     *         The name of the plugin to be de-registered. Must be a string that\n     *         matches an existing plugin.\n     *\n     * @throws {Error}\n     *         If an attempt is made to de-register the base plugin.\n     */\n    ;\n\n    Plugin.deregisterPlugin = function deregisterPlugin(name) {\n      if (name === BASE_PLUGIN_NAME) {\n        throw new Error('Cannot de-register base plugin.');\n      }\n\n      if (pluginExists(name)) {\n        delete pluginStorage[name];\n        delete Player.prototype[name];\n      }\n    }\n    /**\n     * Gets an object containing multiple Video.js plugins.\n     *\n     * @param   {Array} [names]\n     *          If provided, should be an array of plugin names. Defaults to _all_\n     *          plugin names.\n     *\n     * @return {Object|undefined}\n     *          An object containing plugin(s) associated with their name(s) or\n     *          `undefined` if no matching plugins exist).\n     */\n    ;\n\n    Plugin.getPlugins = function getPlugins(names) {\n      if (names === void 0) {\n        names = Object.keys(pluginStorage);\n      }\n\n      var result;\n      names.forEach(function (name) {\n        var plugin = getPlugin(name);\n\n        if (plugin) {\n          result = result || {};\n          result[name] = plugin;\n        }\n      });\n      return result;\n    }\n    /**\n     * Gets a plugin's version, if available\n     *\n     * @param   {string} name\n     *          The name of a plugin.\n     *\n     * @return {string}\n     *          The plugin's version or an empty string.\n     */\n    ;\n\n    Plugin.getPluginVersion = function getPluginVersion(name) {\n      var plugin = getPlugin(name);\n      return plugin && plugin.VERSION || '';\n    };\n\n    return Plugin;\n  }();\n  /**\n   * Gets a plugin by name if it exists.\n   *\n   * @static\n   * @method   getPlugin\n   * @memberOf Plugin\n   * @param    {string} name\n   *           The name of a plugin.\n   *\n   * @returns  {Function|undefined}\n   *           The plugin (or `undefined`).\n   */\n\n\n  Plugin.getPlugin = getPlugin;\n  /**\n   * The name of the base plugin class as it is registered.\n   *\n   * @type {string}\n   */\n\n  Plugin.BASE_PLUGIN_NAME = BASE_PLUGIN_NAME;\n  Plugin.registerPlugin(BASE_PLUGIN_NAME, Plugin);\n  /**\n   * Documented in player.js\n   *\n   * @ignore\n   */\n\n  Player.prototype.usingPlugin = function (name) {\n    return !!this[PLUGIN_CACHE_KEY] && this[PLUGIN_CACHE_KEY][name] === true;\n  };\n  /**\n   * Documented in player.js\n   *\n   * @ignore\n   */\n\n\n  Player.prototype.hasPlugin = function (name) {\n    return !!pluginExists(name);\n  };\n  /**\n   * Signals that a plugin is about to be set up on a player.\n   *\n   * @event    Player#beforepluginsetup\n   * @type     {Plugin~PluginEventHash}\n   */\n\n  /**\n   * Signals that a plugin is about to be set up on a player - by name. The name\n   * is the name of the plugin.\n   *\n   * @event    Player#beforepluginsetup:$name\n   * @type     {Plugin~PluginEventHash}\n   */\n\n  /**\n   * Signals that a plugin has just been set up on a player.\n   *\n   * @event    Player#pluginsetup\n   * @type     {Plugin~PluginEventHash}\n   */\n\n  /**\n   * Signals that a plugin has just been set up on a player - by name. The name\n   * is the name of the plugin.\n   *\n   * @event    Player#pluginsetup:$name\n   * @type     {Plugin~PluginEventHash}\n   */\n\n  /**\n   * @typedef  {Object} Plugin~PluginEventHash\n   *\n   * @property {string} instance\n   *           For basic plugins, the return value of the plugin function. For\n   *           advanced plugins, the plugin instance on which the event is fired.\n   *\n   * @property {string} name\n   *           The name of the plugin.\n   *\n   * @property {string} plugin\n   *           For basic plugins, the plugin function. For advanced plugins, the\n   *           plugin class/constructor.\n   */\n\n  /**\n   * @file extend.js\n   * @module extend\n   */\n\n  /**\n   * A combination of node inherits and babel's inherits (after transpile).\n   * Both work the same but node adds `super_` to the subClass\n   * and Bable adds the superClass as __proto__. Both seem useful.\n   *\n   * @param {Object} subClass\n   *        The class to inherit to\n   *\n   * @param {Object} superClass\n   *        The class to inherit from\n   *\n   * @private\n   */\n  var _inherits$1 = function _inherits(subClass, superClass) {\n    if (typeof superClass !== 'function' && superClass !== null) {\n      throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass);\n    }\n\n    subClass.prototype = Object.create(superClass && superClass.prototype, {\n      constructor: {\n        value: subClass,\n        enumerable: false,\n        writable: true,\n        configurable: true\n      }\n    });\n\n    if (superClass) {\n      // node\n      subClass.super_ = superClass;\n    }\n  };\n  /**\n   * Used to subclass an existing class by emulating ES subclassing using the\n   * `extends` keyword.\n   *\n   * @function\n   * @example\n   * var MyComponent = videojs.extend(videojs.getComponent('Component'), {\n   *   myCustomMethod: function() {\n   *     // Do things in my method.\n   *   }\n   * });\n   *\n   * @param    {Function} superClass\n   *           The class to inherit from\n   *\n   * @param    {Object}   [subClassMethods={}]\n   *           Methods of the new class\n   *\n   * @return   {Function}\n   *           The new class with subClassMethods that inherited superClass.\n   */\n\n\n  var extend$1 = function extend(superClass, subClassMethods) {\n    if (subClassMethods === void 0) {\n      subClassMethods = {};\n    }\n\n    var subClass = function subClass() {\n      superClass.apply(this, arguments);\n    };\n\n    var methods = {};\n\n    if (typeof subClassMethods === 'object') {\n      if (subClassMethods.constructor !== Object.prototype.constructor) {\n        subClass = subClassMethods.constructor;\n      }\n\n      methods = subClassMethods;\n    } else if (typeof subClassMethods === 'function') {\n      subClass = subClassMethods;\n    }\n\n    _inherits$1(subClass, superClass); // Extend subObj's prototype with functions and other properties from props\n\n\n    for (var name in methods) {\n      if (methods.hasOwnProperty(name)) {\n        subClass.prototype[name] = methods[name];\n      }\n    }\n\n    return subClass;\n  };\n\n  /**\n   * @file video.js\n   * @module videojs\n   */\n  /**\n   * Normalize an `id` value by trimming off a leading `#`\n   *\n   * @private\n   * @param   {string} id\n   *          A string, maybe with a leading `#`.\n   *\n   * @return {string}\n   *          The string, without any leading `#`.\n   */\n\n  var normalizeId = function normalizeId(id) {\n    return id.indexOf('#') === 0 ? id.slice(1) : id;\n  };\n  /**\n   * The `videojs()` function doubles as the main function for users to create a\n   * {@link Player} instance as well as the main library namespace.\n   *\n   * It can also be used as a getter for a pre-existing {@link Player} instance.\n   * However, we _strongly_ recommend using `videojs.getPlayer()` for this\n   * purpose because it avoids any potential for unintended initialization.\n   *\n   * Due to [limitations](https://github.com/jsdoc3/jsdoc/issues/955#issuecomment-313829149)\n   * of our JSDoc template, we cannot properly document this as both a function\n   * and a namespace, so its function signature is documented here.\n   *\n   * #### Arguments\n   * ##### id\n   * string|Element, **required**\n   *\n   * Video element or video element ID.\n   *\n   * ##### options\n   * Object, optional\n   *\n   * Options object for providing settings.\n   * See: [Options Guide](https://docs.videojs.com/tutorial-options.html).\n   *\n   * ##### ready\n   * {@link Component~ReadyCallback}, optional\n   *\n   * A function to be called when the {@link Player} and {@link Tech} are ready.\n   *\n   * #### Return Value\n   *\n   * The `videojs()` function returns a {@link Player} instance.\n   *\n   * @namespace\n   *\n   * @borrows AudioTrack as AudioTrack\n   * @borrows Component.getComponent as getComponent\n   * @borrows module:computed-style~computedStyle as computedStyle\n   * @borrows module:events.on as on\n   * @borrows module:events.one as one\n   * @borrows module:events.off as off\n   * @borrows module:events.trigger as trigger\n   * @borrows EventTarget as EventTarget\n   * @borrows module:extend~extend as extend\n   * @borrows module:fn.bind as bind\n   * @borrows module:format-time.formatTime as formatTime\n   * @borrows module:format-time.resetFormatTime as resetFormatTime\n   * @borrows module:format-time.setFormatTime as setFormatTime\n   * @borrows module:merge-options.mergeOptions as mergeOptions\n   * @borrows module:middleware.use as use\n   * @borrows Player.players as players\n   * @borrows Plugin.registerPlugin as registerPlugin\n   * @borrows Plugin.deregisterPlugin as deregisterPlugin\n   * @borrows Plugin.getPlugins as getPlugins\n   * @borrows Plugin.getPlugin as getPlugin\n   * @borrows Plugin.getPluginVersion as getPluginVersion\n   * @borrows Tech.getTech as getTech\n   * @borrows Tech.registerTech as registerTech\n   * @borrows TextTrack as TextTrack\n   * @borrows module:time-ranges.createTimeRanges as createTimeRange\n   * @borrows module:time-ranges.createTimeRanges as createTimeRanges\n   * @borrows module:url.isCrossOrigin as isCrossOrigin\n   * @borrows module:url.parseUrl as parseUrl\n   * @borrows VideoTrack as VideoTrack\n   *\n   * @param  {string|Element} id\n   *         Video element or video element ID.\n   *\n   * @param  {Object} [options]\n   *         Options object for providing settings.\n   *         See: [Options Guide](https://docs.videojs.com/tutorial-options.html).\n   *\n   * @param  {Component~ReadyCallback} [ready]\n   *         A function to be called when the {@link Player} and {@link Tech} are\n   *         ready.\n   *\n   * @return {Player}\n   *         The `videojs()` function returns a {@link Player|Player} instance.\n   */\n\n\n  function videojs$1(id, options, ready) {\n    var player = videojs$1.getPlayer(id);\n\n    if (player) {\n      if (options) {\n        log.warn(\"Player \\\"\" + id + \"\\\" is already initialised. Options will not be applied.\");\n      }\n\n      if (ready) {\n        player.ready(ready);\n      }\n\n      return player;\n    }\n\n    var el = typeof id === 'string' ? $('#' + normalizeId(id)) : id;\n\n    if (!isEl(el)) {\n      throw new TypeError('The element or ID supplied is not valid. (videojs)');\n    }\n\n    if (!document.body.contains(el)) {\n      log.warn('The element supplied is not included in the DOM');\n    }\n\n    options = options || {};\n    videojs$1.hooks('beforesetup').forEach(function (hookFunction) {\n      var opts = hookFunction(el, mergeOptions(options));\n\n      if (!isObject(opts) || Array.isArray(opts)) {\n        log.error('please return an object in beforesetup hooks');\n        return;\n      }\n\n      options = mergeOptions(options, opts);\n    }); // We get the current \"Player\" component here in case an integration has\n    // replaced it with a custom player.\n\n    var PlayerComponent = Component.getComponent('Player');\n    player = new PlayerComponent(el, options, ready);\n    videojs$1.hooks('setup').forEach(function (hookFunction) {\n      return hookFunction(player);\n    });\n    return player;\n  }\n  /**\n   * An Object that contains lifecycle hooks as keys which point to an array\n   * of functions that are run when a lifecycle is triggered\n   *\n   * @private\n   */\n\n\n  videojs$1.hooks_ = {};\n  /**\n   * Get a list of hooks for a specific lifecycle\n   *\n   * @param  {string} type\n   *         the lifecyle to get hooks from\n   *\n   * @param  {Function|Function[]} [fn]\n   *         Optionally add a hook (or hooks) to the lifecycle that your are getting.\n   *\n   * @return {Array}\n   *         an array of hooks, or an empty array if there are none.\n   */\n\n  videojs$1.hooks = function (type, fn) {\n    videojs$1.hooks_[type] = videojs$1.hooks_[type] || [];\n\n    if (fn) {\n      videojs$1.hooks_[type] = videojs$1.hooks_[type].concat(fn);\n    }\n\n    return videojs$1.hooks_[type];\n  };\n  /**\n   * Add a function hook to a specific videojs lifecycle.\n   *\n   * @param {string} type\n   *        the lifecycle to hook the function to.\n   *\n   * @param {Function|Function[]}\n   *        The function or array of functions to attach.\n   */\n\n\n  videojs$1.hook = function (type, fn) {\n    videojs$1.hooks(type, fn);\n  };\n  /**\n   * Add a function hook that will only run once to a specific videojs lifecycle.\n   *\n   * @param {string} type\n   *        the lifecycle to hook the function to.\n   *\n   * @param {Function|Function[]}\n   *        The function or array of functions to attach.\n   */\n\n\n  videojs$1.hookOnce = function (type, fn) {\n    videojs$1.hooks(type, [].concat(fn).map(function (original) {\n      var wrapper = function wrapper() {\n        videojs$1.removeHook(type, wrapper);\n        return original.apply(void 0, arguments);\n      };\n\n      return wrapper;\n    }));\n  };\n  /**\n   * Remove a hook from a specific videojs lifecycle.\n   *\n   * @param  {string} type\n   *         the lifecycle that the function hooked to\n   *\n   * @param  {Function} fn\n   *         The hooked function to remove\n   *\n   * @return {boolean}\n   *         The function that was removed or undef\n   */\n\n\n  videojs$1.removeHook = function (type, fn) {\n    var index = videojs$1.hooks(type).indexOf(fn);\n\n    if (index <= -1) {\n      return false;\n    }\n\n    videojs$1.hooks_[type] = videojs$1.hooks_[type].slice();\n    videojs$1.hooks_[type].splice(index, 1);\n    return true;\n  }; // Add default styles\n\n\n  if (window$1.VIDEOJS_NO_DYNAMIC_STYLE !== true && isReal()) {\n    var style$1 = $('.vjs-styles-defaults');\n\n    if (!style$1) {\n      style$1 = createStyleElement('vjs-styles-defaults');\n      var head = $('head');\n\n      if (head) {\n        head.insertBefore(style$1, head.firstChild);\n      }\n\n      setTextContent(style$1, \"\\n      .video-js {\\n        width: 300px;\\n        height: 150px;\\n      }\\n\\n      .vjs-fluid {\\n        padding-top: 56.25%\\n      }\\n    \");\n    }\n  } // Run Auto-load players\n  // You have to wait at least once in case this script is loaded after your\n  // video in the DOM (weird behavior only with minified version)\n\n\n  autoSetupTimeout(1, videojs$1);\n  /**\n   * Current Video.js version. Follows [semantic versioning](https://semver.org/).\n   *\n   * @type {string}\n   */\n\n  videojs$1.VERSION = version;\n  /**\n   * The global options object. These are the settings that take effect\n   * if no overrides are specified when the player is created.\n   *\n   * @type {Object}\n   */\n\n  videojs$1.options = Player.prototype.options_;\n  /**\n   * Get an object with the currently created players, keyed by player ID\n   *\n   * @return {Object}\n   *         The created players\n   */\n\n  videojs$1.getPlayers = function () {\n    return Player.players;\n  };\n  /**\n   * Get a single player based on an ID or DOM element.\n   *\n   * This is useful if you want to check if an element or ID has an associated\n   * Video.js player, but not create one if it doesn't.\n   *\n   * @param   {string|Element} id\n   *          An HTML element - `<video>`, `<audio>`, or `<video-js>` -\n   *          or a string matching the `id` of such an element.\n   *\n   * @return {Player|undefined}\n   *          A player instance or `undefined` if there is no player instance\n   *          matching the argument.\n   */\n\n\n  videojs$1.getPlayer = function (id) {\n    var players = Player.players;\n    var tag;\n\n    if (typeof id === 'string') {\n      var nId = normalizeId(id);\n      var player = players[nId];\n\n      if (player) {\n        return player;\n      }\n\n      tag = $('#' + nId);\n    } else {\n      tag = id;\n    }\n\n    if (isEl(tag)) {\n      var _tag = tag,\n          _player = _tag.player,\n          playerId = _tag.playerId; // Element may have a `player` property referring to an already created\n      // player instance. If so, return that.\n\n      if (_player || players[playerId]) {\n        return _player || players[playerId];\n      }\n    }\n  };\n  /**\n   * Returns an array of all current players.\n   *\n   * @return {Array}\n   *         An array of all players. The array will be in the order that\n   *         `Object.keys` provides, which could potentially vary between\n   *         JavaScript engines.\n   *\n   */\n\n\n  videojs$1.getAllPlayers = function () {\n    return (// Disposed players leave a key with a `null` value, so we need to make sure\n      // we filter those out.\n      Object.keys(Player.players).map(function (k) {\n        return Player.players[k];\n      }).filter(Boolean)\n    );\n  };\n\n  videojs$1.players = Player.players;\n  videojs$1.getComponent = Component.getComponent;\n  /**\n   * Register a component so it can referred to by name. Used when adding to other\n   * components, either through addChild `component.addChild('myComponent')` or through\n   * default children options  `{ children: ['myComponent'] }`.\n   *\n   * > NOTE: You could also just initialize the component before adding.\n   * `component.addChild(new MyComponent());`\n   *\n   * @param {string} name\n   *        The class name of the component\n   *\n   * @param {Component} comp\n   *        The component class\n   *\n   * @return {Component}\n   *         The newly registered component\n   */\n\n  videojs$1.registerComponent = function (name$$1, comp) {\n    if (Tech.isTech(comp)) {\n      log.warn(\"The \" + name$$1 + \" tech was registered as a component. It should instead be registered using videojs.registerTech(name, tech)\");\n    }\n\n    Component.registerComponent.call(Component, name$$1, comp);\n  };\n\n  videojs$1.getTech = Tech.getTech;\n  videojs$1.registerTech = Tech.registerTech;\n  videojs$1.use = use;\n  /**\n   * An object that can be returned by a middleware to signify\n   * that the middleware is being terminated.\n   *\n   * @type {object}\n   * @property {object} middleware.TERMINATOR\n   */\n\n  Object.defineProperty(videojs$1, 'middleware', {\n    value: {},\n    writeable: false,\n    enumerable: true\n  });\n  Object.defineProperty(videojs$1.middleware, 'TERMINATOR', {\n    value: TERMINATOR,\n    writeable: false,\n    enumerable: true\n  });\n  /**\n   * A reference to the {@link module:browser|browser utility module} as an object.\n   *\n   * @type {Object}\n   * @see  {@link module:browser|browser}\n   */\n\n  videojs$1.browser = browser;\n  /**\n   * Use {@link module:browser.TOUCH_ENABLED|browser.TOUCH_ENABLED} instead; only\n   * included for backward-compatibility with 4.x.\n   *\n   * @deprecated Since version 5.0, use {@link module:browser.TOUCH_ENABLED|browser.TOUCH_ENABLED instead.\n   * @type {boolean}\n   */\n\n  videojs$1.TOUCH_ENABLED = TOUCH_ENABLED;\n  videojs$1.extend = extend$1;\n  videojs$1.mergeOptions = mergeOptions;\n  videojs$1.bind = bind;\n  videojs$1.registerPlugin = Plugin.registerPlugin;\n  videojs$1.deregisterPlugin = Plugin.deregisterPlugin;\n  /**\n   * Deprecated method to register a plugin with Video.js\n   *\n   * @deprecated videojs.plugin() is deprecated; use videojs.registerPlugin() instead\n   *\n   * @param {string} name\n   *        The plugin name\n   *\n   * @param {Plugin|Function} plugin\n   *         The plugin sub-class or function\n   */\n\n  videojs$1.plugin = function (name$$1, plugin) {\n    log.warn('videojs.plugin() is deprecated; use videojs.registerPlugin() instead');\n    return Plugin.registerPlugin(name$$1, plugin);\n  };\n\n  videojs$1.getPlugins = Plugin.getPlugins;\n  videojs$1.getPlugin = Plugin.getPlugin;\n  videojs$1.getPluginVersion = Plugin.getPluginVersion;\n  /**\n   * Adding languages so that they're available to all players.\n   * Example: `videojs.addLanguage('es', { 'Hello': 'Hola' });`\n   *\n   * @param {string} code\n   *        The language code or dictionary property\n   *\n   * @param {Object} data\n   *        The data values to be translated\n   *\n   * @return {Object}\n   *         The resulting language dictionary object\n   */\n\n  videojs$1.addLanguage = function (code, data) {\n    var _mergeOptions;\n\n    code = ('' + code).toLowerCase();\n    videojs$1.options.languages = mergeOptions(videojs$1.options.languages, (_mergeOptions = {}, _mergeOptions[code] = data, _mergeOptions));\n    return videojs$1.options.languages[code];\n  };\n  /**\n   * A reference to the {@link module:log|log utility module} as an object.\n   *\n   * @type {Function}\n   * @see  {@link module:log|log}\n   */\n\n\n  videojs$1.log = log;\n  videojs$1.createLogger = createLogger$1;\n  videojs$1.createTimeRange = videojs$1.createTimeRanges = createTimeRanges;\n  videojs$1.formatTime = formatTime;\n  videojs$1.setFormatTime = setFormatTime;\n  videojs$1.resetFormatTime = resetFormatTime;\n  videojs$1.parseUrl = parseUrl;\n  videojs$1.isCrossOrigin = isCrossOrigin;\n  videojs$1.EventTarget = EventTarget;\n  videojs$1.on = on;\n  videojs$1.one = one;\n  videojs$1.off = off;\n  videojs$1.trigger = trigger;\n  /**\n   * A cross-browser XMLHttpRequest wrapper.\n   *\n   * @function\n   * @param    {Object} options\n   *           Settings for the request.\n   *\n   * @return   {XMLHttpRequest|XDomainRequest}\n   *           The request object.\n   *\n   * @see      https://github.com/Raynos/xhr\n   */\n\n  videojs$1.xhr = xhr;\n  videojs$1.TextTrack = TextTrack;\n  videojs$1.AudioTrack = AudioTrack;\n  videojs$1.VideoTrack = VideoTrack;\n  ['isEl', 'isTextNode', 'createEl', 'hasClass', 'addClass', 'removeClass', 'toggleClass', 'setAttributes', 'getAttributes', 'emptyEl', 'appendContent', 'insertContent'].forEach(function (k) {\n    videojs$1[k] = function () {\n      log.warn(\"videojs.\" + k + \"() is deprecated; use videojs.dom.\" + k + \"() instead\");\n      return Dom[k].apply(null, arguments);\n    };\n  });\n  videojs$1.computedStyle = computedStyle;\n  /**\n   * A reference to the {@link module:dom|DOM utility module} as an object.\n   *\n   * @type {Object}\n   * @see  {@link module:dom|dom}\n   */\n\n  videojs$1.dom = Dom;\n  /**\n   * A reference to the {@link module:url|URL utility module} as an object.\n   *\n   * @type {Object}\n   * @see  {@link module:url|url}\n   */\n\n  videojs$1.url = Url;\n\n  var urlToolkit = createCommonjsModule(function (module, exports) {\n    // see https://tools.ietf.org/html/rfc1808\n\n    /* jshint ignore:start */\n    (function (root) {\n      /* jshint ignore:end */\n      var URL_REGEX = /^((?:[a-zA-Z0-9+\\-.]+:)?)(\\/\\/[^\\/?#]*)?((?:[^\\/\\?#]*\\/)*.*?)??(;.*?)?(\\?.*?)?(#.*?)?$/;\n      var FIRST_SEGMENT_REGEX = /^([^\\/?#]*)(.*)$/;\n      var SLASH_DOT_REGEX = /(?:\\/|^)\\.(?=\\/)/g;\n      var SLASH_DOT_DOT_REGEX = /(?:\\/|^)\\.\\.\\/(?!\\.\\.\\/).*?(?=\\/)/g;\n      var URLToolkit = {\n        // jshint ignore:line\n        // If opts.alwaysNormalize is true then the path will always be normalized even when it starts with / or //\n        // E.g\n        // With opts.alwaysNormalize = false (default, spec compliant)\n        // http://a.com/b/cd + /e/f/../g => http://a.com/e/f/../g\n        // With opts.alwaysNormalize = true (not spec compliant)\n        // http://a.com/b/cd + /e/f/../g => http://a.com/e/g\n        buildAbsoluteURL: function buildAbsoluteURL(baseURL, relativeURL, opts) {\n          opts = opts || {}; // remove any remaining space and CRLF\n\n          baseURL = baseURL.trim();\n          relativeURL = relativeURL.trim();\n\n          if (!relativeURL) {\n            // 2a) If the embedded URL is entirely empty, it inherits the\n            // entire base URL (i.e., is set equal to the base URL)\n            // and we are done.\n            if (!opts.alwaysNormalize) {\n              return baseURL;\n            }\n\n            var basePartsForNormalise = URLToolkit.parseURL(baseURL);\n\n            if (!basePartsForNormalise) {\n              throw new Error('Error trying to parse base URL.');\n            }\n\n            basePartsForNormalise.path = URLToolkit.normalizePath(basePartsForNormalise.path);\n            return URLToolkit.buildURLFromParts(basePartsForNormalise);\n          }\n\n          var relativeParts = URLToolkit.parseURL(relativeURL);\n\n          if (!relativeParts) {\n            throw new Error('Error trying to parse relative URL.');\n          }\n\n          if (relativeParts.scheme) {\n            // 2b) If the embedded URL starts with a scheme name, it is\n            // interpreted as an absolute URL and we are done.\n            if (!opts.alwaysNormalize) {\n              return relativeURL;\n            }\n\n            relativeParts.path = URLToolkit.normalizePath(relativeParts.path);\n            return URLToolkit.buildURLFromParts(relativeParts);\n          }\n\n          var baseParts = URLToolkit.parseURL(baseURL);\n\n          if (!baseParts) {\n            throw new Error('Error trying to parse base URL.');\n          }\n\n          if (!baseParts.netLoc && baseParts.path && baseParts.path[0] !== '/') {\n            // If netLoc missing and path doesn't start with '/', assume everthing before the first '/' is the netLoc\n            // This causes 'example.com/a' to be handled as '//example.com/a' instead of '/example.com/a'\n            var pathParts = FIRST_SEGMENT_REGEX.exec(baseParts.path);\n            baseParts.netLoc = pathParts[1];\n            baseParts.path = pathParts[2];\n          }\n\n          if (baseParts.netLoc && !baseParts.path) {\n            baseParts.path = '/';\n          }\n\n          var builtParts = {\n            // 2c) Otherwise, the embedded URL inherits the scheme of\n            // the base URL.\n            scheme: baseParts.scheme,\n            netLoc: relativeParts.netLoc,\n            path: null,\n            params: relativeParts.params,\n            query: relativeParts.query,\n            fragment: relativeParts.fragment\n          };\n\n          if (!relativeParts.netLoc) {\n            // 3) If the embedded URL's <net_loc> is non-empty, we skip to\n            // Step 7.  Otherwise, the embedded URL inherits the <net_loc>\n            // (if any) of the base URL.\n            builtParts.netLoc = baseParts.netLoc; // 4) If the embedded URL path is preceded by a slash \"/\", the\n            // path is not relative and we skip to Step 7.\n\n            if (relativeParts.path[0] !== '/') {\n              if (!relativeParts.path) {\n                // 5) If the embedded URL path is empty (and not preceded by a\n                // slash), then the embedded URL inherits the base URL path\n                builtParts.path = baseParts.path; // 5a) if the embedded URL's <params> is non-empty, we skip to\n                // step 7; otherwise, it inherits the <params> of the base\n                // URL (if any) and\n\n                if (!relativeParts.params) {\n                  builtParts.params = baseParts.params; // 5b) if the embedded URL's <query> is non-empty, we skip to\n                  // step 7; otherwise, it inherits the <query> of the base\n                  // URL (if any) and we skip to step 7.\n\n                  if (!relativeParts.query) {\n                    builtParts.query = baseParts.query;\n                  }\n                }\n              } else {\n                // 6) The last segment of the base URL's path (anything\n                // following the rightmost slash \"/\", or the entire path if no\n                // slash is present) is removed and the embedded URL's path is\n                // appended in its place.\n                var baseURLPath = baseParts.path;\n                var newPath = baseURLPath.substring(0, baseURLPath.lastIndexOf('/') + 1) + relativeParts.path;\n                builtParts.path = URLToolkit.normalizePath(newPath);\n              }\n            }\n          }\n\n          if (builtParts.path === null) {\n            builtParts.path = opts.alwaysNormalize ? URLToolkit.normalizePath(relativeParts.path) : relativeParts.path;\n          }\n\n          return URLToolkit.buildURLFromParts(builtParts);\n        },\n        parseURL: function parseURL(url) {\n          var parts = URL_REGEX.exec(url);\n\n          if (!parts) {\n            return null;\n          }\n\n          return {\n            scheme: parts[1] || '',\n            netLoc: parts[2] || '',\n            path: parts[3] || '',\n            params: parts[4] || '',\n            query: parts[5] || '',\n            fragment: parts[6] || ''\n          };\n        },\n        normalizePath: function normalizePath(path) {\n          // The following operations are\n          // then applied, in order, to the new path:\n          // 6a) All occurrences of \"./\", where \".\" is a complete path\n          // segment, are removed.\n          // 6b) If the path ends with \".\" as a complete path segment,\n          // that \".\" is removed.\n          path = path.split('').reverse().join('').replace(SLASH_DOT_REGEX, ''); // 6c) All occurrences of \"<segment>/../\", where <segment> is a\n          // complete path segment not equal to \"..\", are removed.\n          // Removal of these path segments is performed iteratively,\n          // removing the leftmost matching pattern on each iteration,\n          // until no matching pattern remains.\n          // 6d) If the path ends with \"<segment>/..\", where <segment> is a\n          // complete path segment not equal to \"..\", that\n          // \"<segment>/..\" is removed.\n\n          while (path.length !== (path = path.replace(SLASH_DOT_DOT_REGEX, '')).length) {} // jshint ignore:line\n\n\n          return path.split('').reverse().join('');\n        },\n        buildURLFromParts: function buildURLFromParts(parts) {\n          return parts.scheme + parts.netLoc + parts.path + parts.params + parts.query + parts.fragment;\n        }\n      };\n      /* jshint ignore:start */\n\n      module.exports = URLToolkit;\n    })(commonjsGlobal);\n    /* jshint ignore:end */\n\n  });\n\n  /*! @name m3u8-parser @version 4.3.0 @license Apache-2.0 */\n  function _extends$1() {\n    _extends$1 = Object.assign || function (target) {\n      for (var i = 1; i < arguments.length; i++) {\n        var source = arguments[i];\n\n        for (var key in source) {\n          if (Object.prototype.hasOwnProperty.call(source, key)) {\n            target[key] = source[key];\n          }\n        }\n      }\n\n      return target;\n    };\n\n    return _extends$1.apply(this, arguments);\n  }\n\n  function _inheritsLoose$1(subClass, superClass) {\n    subClass.prototype = Object.create(superClass.prototype);\n    subClass.prototype.constructor = subClass;\n    subClass.__proto__ = superClass;\n  }\n\n  function _assertThisInitialized$1(self) {\n    if (self === void 0) {\n      throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\");\n    }\n\n    return self;\n  }\n  /**\n   * @file stream.js\n   */\n\n  /**\n   * A lightweight readable stream implementation that handles event dispatching.\n   *\n   * @class Stream\n   */\n\n\n  var Stream =\n  /*#__PURE__*/\n  function () {\n    function Stream() {\n      this.listeners = {};\n    }\n    /**\n     * Add a listener for a specified event type.\n     *\n     * @param {string} type the event name\n     * @param {Function} listener the callback to be invoked when an event of\n     * the specified type occurs\n     */\n\n\n    var _proto = Stream.prototype;\n\n    _proto.on = function on(type, listener) {\n      if (!this.listeners[type]) {\n        this.listeners[type] = [];\n      }\n\n      this.listeners[type].push(listener);\n    };\n    /**\n     * Remove a listener for a specified event type.\n     *\n     * @param {string} type the event name\n     * @param {Function} listener  a function previously registered for this\n     * type of event through `on`\n     * @return {boolean} if we could turn it off or not\n     */\n\n\n    _proto.off = function off(type, listener) {\n      if (!this.listeners[type]) {\n        return false;\n      }\n\n      var index = this.listeners[type].indexOf(listener);\n      this.listeners[type].splice(index, 1);\n      return index > -1;\n    };\n    /**\n     * Trigger an event of the specified type on this stream. Any additional\n     * arguments to this function are passed as parameters to event listeners.\n     *\n     * @param {string} type the event name\n     */\n\n\n    _proto.trigger = function trigger(type) {\n      var callbacks = this.listeners[type];\n      var i;\n      var length;\n      var args;\n\n      if (!callbacks) {\n        return;\n      } // Slicing the arguments on every invocation of this method\n      // can add a significant amount of overhead. Avoid the\n      // intermediate object creation for the common case of a\n      // single callback argument\n\n\n      if (arguments.length === 2) {\n        length = callbacks.length;\n\n        for (i = 0; i < length; ++i) {\n          callbacks[i].call(this, arguments[1]);\n        }\n      } else {\n        args = Array.prototype.slice.call(arguments, 1);\n        length = callbacks.length;\n\n        for (i = 0; i < length; ++i) {\n          callbacks[i].apply(this, args);\n        }\n      }\n    };\n    /**\n     * Destroys the stream and cleans up.\n     */\n\n\n    _proto.dispose = function dispose() {\n      this.listeners = {};\n    };\n    /**\n     * Forwards all `data` events on this stream to the destination stream. The\n     * destination stream should provide a method `push` to receive the data\n     * events as they arrive.\n     *\n     * @param {Stream} destination the stream that will receive all `data` events\n     * @see http://nodejs.org/api/stream.html#stream_readable_pipe_destination_options\n     */\n\n\n    _proto.pipe = function pipe(destination) {\n      this.on('data', function (data) {\n        destination.push(data);\n      });\n    };\n\n    return Stream;\n  }();\n  /**\n   * A stream that buffers string input and generates a `data` event for each\n   * line.\n   *\n   * @class LineStream\n   * @extends Stream\n   */\n\n\n  var LineStream =\n  /*#__PURE__*/\n  function (_Stream) {\n    _inheritsLoose$1(LineStream, _Stream);\n\n    function LineStream() {\n      var _this;\n\n      _this = _Stream.call(this) || this;\n      _this.buffer = '';\n      return _this;\n    }\n    /**\n     * Add new data to be parsed.\n     *\n     * @param {string} data the text to process\n     */\n\n\n    var _proto = LineStream.prototype;\n\n    _proto.push = function push(data) {\n      var nextNewline;\n      this.buffer += data;\n      nextNewline = this.buffer.indexOf('\\n');\n\n      for (; nextNewline > -1; nextNewline = this.buffer.indexOf('\\n')) {\n        this.trigger('data', this.buffer.substring(0, nextNewline));\n        this.buffer = this.buffer.substring(nextNewline + 1);\n      }\n    };\n\n    return LineStream;\n  }(Stream);\n  /**\n   * \"forgiving\" attribute list psuedo-grammar:\n   * attributes -> keyvalue (',' keyvalue)*\n   * keyvalue   -> key '=' value\n   * key        -> [^=]*\n   * value      -> '\"' [^\"]* '\"' | [^,]*\n   */\n\n\n  var attributeSeparator = function attributeSeparator() {\n    var key = '[^=]*';\n    var value = '\"[^\"]*\"|[^,]*';\n    var keyvalue = '(?:' + key + ')=(?:' + value + ')';\n    return new RegExp('(?:^|,)(' + keyvalue + ')');\n  };\n  /**\n   * Parse attributes from a line given the separator\n   *\n   * @param {string} attributes the attribute line to parse\n   */\n\n\n  var parseAttributes = function parseAttributes(attributes) {\n    // split the string using attributes as the separator\n    var attrs = attributes.split(attributeSeparator());\n    var result = {};\n    var i = attrs.length;\n    var attr;\n\n    while (i--) {\n      // filter out unmatched portions of the string\n      if (attrs[i] === '') {\n        continue;\n      } // split the key and value\n\n\n      attr = /([^=]*)=(.*)/.exec(attrs[i]).slice(1); // trim whitespace and remove optional quotes around the value\n\n      attr[0] = attr[0].replace(/^\\s+|\\s+$/g, '');\n      attr[1] = attr[1].replace(/^\\s+|\\s+$/g, '');\n      attr[1] = attr[1].replace(/^['\"](.*)['\"]$/g, '$1');\n      result[attr[0]] = attr[1];\n    }\n\n    return result;\n  };\n  /**\n   * A line-level M3U8 parser event stream. It expects to receive input one\n   * line at a time and performs a context-free parse of its contents. A stream\n   * interpretation of a manifest can be useful if the manifest is expected to\n   * be too large to fit comfortably into memory or the entirety of the input\n   * is not immediately available. Otherwise, it's probably much easier to work\n   * with a regular `Parser` object.\n   *\n   * Produces `data` events with an object that captures the parser's\n   * interpretation of the input. That object has a property `tag` that is one\n   * of `uri`, `comment`, or `tag`. URIs only have a single additional\n   * property, `line`, which captures the entirety of the input without\n   * interpretation. Comments similarly have a single additional property\n   * `text` which is the input without the leading `#`.\n   *\n   * Tags always have a property `tagType` which is the lower-cased version of\n   * the M3U8 directive without the `#EXT` or `#EXT-X-` prefix. For instance,\n   * `#EXT-X-MEDIA-SEQUENCE` becomes `media-sequence` when parsed. Unrecognized\n   * tags are given the tag type `unknown` and a single additional property\n   * `data` with the remainder of the input.\n   *\n   * @class ParseStream\n   * @extends Stream\n   */\n\n\n  var ParseStream =\n  /*#__PURE__*/\n  function (_Stream) {\n    _inheritsLoose$1(ParseStream, _Stream);\n\n    function ParseStream() {\n      var _this;\n\n      _this = _Stream.call(this) || this;\n      _this.customParsers = [];\n      _this.tagMappers = [];\n      return _this;\n    }\n    /**\n     * Parses an additional line of input.\n     *\n     * @param {string} line a single line of an M3U8 file to parse\n     */\n\n\n    var _proto = ParseStream.prototype;\n\n    _proto.push = function push(line) {\n      var _this2 = this;\n\n      var match;\n      var event; // strip whitespace\n\n      line = line.trim();\n\n      if (line.length === 0) {\n        // ignore empty lines\n        return;\n      } // URIs\n\n\n      if (line[0] !== '#') {\n        this.trigger('data', {\n          type: 'uri',\n          uri: line\n        });\n        return;\n      } // map tags\n\n\n      var newLines = this.tagMappers.reduce(function (acc, mapper) {\n        var mappedLine = mapper(line); // skip if unchanged\n\n        if (mappedLine === line) {\n          return acc;\n        }\n\n        return acc.concat([mappedLine]);\n      }, [line]);\n      newLines.forEach(function (newLine) {\n        for (var i = 0; i < _this2.customParsers.length; i++) {\n          if (_this2.customParsers[i].call(_this2, newLine)) {\n            return;\n          }\n        } // Comments\n\n\n        if (newLine.indexOf('#EXT') !== 0) {\n          _this2.trigger('data', {\n            type: 'comment',\n            text: newLine.slice(1)\n          });\n\n          return;\n        } // strip off any carriage returns here so the regex matching\n        // doesn't have to account for them.\n\n\n        newLine = newLine.replace('\\r', ''); // Tags\n\n        match = /^#EXTM3U/.exec(newLine);\n\n        if (match) {\n          _this2.trigger('data', {\n            type: 'tag',\n            tagType: 'm3u'\n          });\n\n          return;\n        }\n\n        match = /^#EXTINF:?([0-9\\.]*)?,?(.*)?$/.exec(newLine);\n\n        if (match) {\n          event = {\n            type: 'tag',\n            tagType: 'inf'\n          };\n\n          if (match[1]) {\n            event.duration = parseFloat(match[1]);\n          }\n\n          if (match[2]) {\n            event.title = match[2];\n          }\n\n          _this2.trigger('data', event);\n\n          return;\n        }\n\n        match = /^#EXT-X-TARGETDURATION:?([0-9.]*)?/.exec(newLine);\n\n        if (match) {\n          event = {\n            type: 'tag',\n            tagType: 'targetduration'\n          };\n\n          if (match[1]) {\n            event.duration = parseInt(match[1], 10);\n          }\n\n          _this2.trigger('data', event);\n\n          return;\n        }\n\n        match = /^#ZEN-TOTAL-DURATION:?([0-9.]*)?/.exec(newLine);\n\n        if (match) {\n          event = {\n            type: 'tag',\n            tagType: 'totalduration'\n          };\n\n          if (match[1]) {\n            event.duration = parseInt(match[1], 10);\n          }\n\n          _this2.trigger('data', event);\n\n          return;\n        }\n\n        match = /^#EXT-X-VERSION:?([0-9.]*)?/.exec(newLine);\n\n        if (match) {\n          event = {\n            type: 'tag',\n            tagType: 'version'\n          };\n\n          if (match[1]) {\n            event.version = parseInt(match[1], 10);\n          }\n\n          _this2.trigger('data', event);\n\n          return;\n        }\n\n        match = /^#EXT-X-MEDIA-SEQUENCE:?(\\-?[0-9.]*)?/.exec(newLine);\n\n        if (match) {\n          event = {\n            type: 'tag',\n            tagType: 'media-sequence'\n          };\n\n          if (match[1]) {\n            event.number = parseInt(match[1], 10);\n          }\n\n          _this2.trigger('data', event);\n\n          return;\n        }\n\n        match = /^#EXT-X-DISCONTINUITY-SEQUENCE:?(\\-?[0-9.]*)?/.exec(newLine);\n\n        if (match) {\n          event = {\n            type: 'tag',\n            tagType: 'discontinuity-sequence'\n          };\n\n          if (match[1]) {\n            event.number = parseInt(match[1], 10);\n          }\n\n          _this2.trigger('data', event);\n\n          return;\n        }\n\n        match = /^#EXT-X-PLAYLIST-TYPE:?(.*)?$/.exec(newLine);\n\n        if (match) {\n          event = {\n            type: 'tag',\n            tagType: 'playlist-type'\n          };\n\n          if (match[1]) {\n            event.playlistType = match[1];\n          }\n\n          _this2.trigger('data', event);\n\n          return;\n        }\n\n        match = /^#EXT-X-BYTERANGE:?([0-9.]*)?@?([0-9.]*)?/.exec(newLine);\n\n        if (match) {\n          event = {\n            type: 'tag',\n            tagType: 'byterange'\n          };\n\n          if (match[1]) {\n            event.length = parseInt(match[1], 10);\n          }\n\n          if (match[2]) {\n            event.offset = parseInt(match[2], 10);\n          }\n\n          _this2.trigger('data', event);\n\n          return;\n        }\n\n        match = /^#EXT-X-ALLOW-CACHE:?(YES|NO)?/.exec(newLine);\n\n        if (match) {\n          event = {\n            type: 'tag',\n            tagType: 'allow-cache'\n          };\n\n          if (match[1]) {\n            event.allowed = !/NO/.test(match[1]);\n          }\n\n          _this2.trigger('data', event);\n\n          return;\n        }\n\n        match = /^#EXT-X-MAP:?(.*)$/.exec(newLine);\n\n        if (match) {\n          event = {\n            type: 'tag',\n            tagType: 'map'\n          };\n\n          if (match[1]) {\n            var attributes = parseAttributes(match[1]);\n\n            if (attributes.URI) {\n              event.uri = attributes.URI;\n            }\n\n            if (attributes.BYTERANGE) {\n              var _attributes$BYTERANGE = attributes.BYTERANGE.split('@'),\n                  length = _attributes$BYTERANGE[0],\n                  offset = _attributes$BYTERANGE[1];\n\n              event.byterange = {};\n\n              if (length) {\n                event.byterange.length = parseInt(length, 10);\n              }\n\n              if (offset) {\n                event.byterange.offset = parseInt(offset, 10);\n              }\n            }\n          }\n\n          _this2.trigger('data', event);\n\n          return;\n        }\n\n        match = /^#EXT-X-STREAM-INF:?(.*)$/.exec(newLine);\n\n        if (match) {\n          event = {\n            type: 'tag',\n            tagType: 'stream-inf'\n          };\n\n          if (match[1]) {\n            event.attributes = parseAttributes(match[1]);\n\n            if (event.attributes.RESOLUTION) {\n              var split = event.attributes.RESOLUTION.split('x');\n              var resolution = {};\n\n              if (split[0]) {\n                resolution.width = parseInt(split[0], 10);\n              }\n\n              if (split[1]) {\n                resolution.height = parseInt(split[1], 10);\n              }\n\n              event.attributes.RESOLUTION = resolution;\n            }\n\n            if (event.attributes.BANDWIDTH) {\n              event.attributes.BANDWIDTH = parseInt(event.attributes.BANDWIDTH, 10);\n            }\n\n            if (event.attributes['PROGRAM-ID']) {\n              event.attributes['PROGRAM-ID'] = parseInt(event.attributes['PROGRAM-ID'], 10);\n            }\n          }\n\n          _this2.trigger('data', event);\n\n          return;\n        }\n\n        match = /^#EXT-X-MEDIA:?(.*)$/.exec(newLine);\n\n        if (match) {\n          event = {\n            type: 'tag',\n            tagType: 'media'\n          };\n\n          if (match[1]) {\n            event.attributes = parseAttributes(match[1]);\n          }\n\n          _this2.trigger('data', event);\n\n          return;\n        }\n\n        match = /^#EXT-X-ENDLIST/.exec(newLine);\n\n        if (match) {\n          _this2.trigger('data', {\n            type: 'tag',\n            tagType: 'endlist'\n          });\n\n          return;\n        }\n\n        match = /^#EXT-X-DISCONTINUITY/.exec(newLine);\n\n        if (match) {\n          _this2.trigger('data', {\n            type: 'tag',\n            tagType: 'discontinuity'\n          });\n\n          return;\n        }\n\n        match = /^#EXT-X-PROGRAM-DATE-TIME:?(.*)$/.exec(newLine);\n\n        if (match) {\n          event = {\n            type: 'tag',\n            tagType: 'program-date-time'\n          };\n\n          if (match[1]) {\n            event.dateTimeString = match[1];\n            event.dateTimeObject = new Date(match[1]);\n          }\n\n          _this2.trigger('data', event);\n\n          return;\n        }\n\n        match = /^#EXT-X-KEY:?(.*)$/.exec(newLine);\n\n        if (match) {\n          event = {\n            type: 'tag',\n            tagType: 'key'\n          };\n\n          if (match[1]) {\n            event.attributes = parseAttributes(match[1]); // parse the IV string into a Uint32Array\n\n            if (event.attributes.IV) {\n              if (event.attributes.IV.substring(0, 2).toLowerCase() === '0x') {\n                event.attributes.IV = event.attributes.IV.substring(2);\n              }\n\n              event.attributes.IV = event.attributes.IV.match(/.{8}/g);\n              event.attributes.IV[0] = parseInt(event.attributes.IV[0], 16);\n              event.attributes.IV[1] = parseInt(event.attributes.IV[1], 16);\n              event.attributes.IV[2] = parseInt(event.attributes.IV[2], 16);\n              event.attributes.IV[3] = parseInt(event.attributes.IV[3], 16);\n              event.attributes.IV = new Uint32Array(event.attributes.IV);\n            }\n          }\n\n          _this2.trigger('data', event);\n\n          return;\n        }\n\n        match = /^#EXT-X-START:?(.*)$/.exec(newLine);\n\n        if (match) {\n          event = {\n            type: 'tag',\n            tagType: 'start'\n          };\n\n          if (match[1]) {\n            event.attributes = parseAttributes(match[1]);\n            event.attributes['TIME-OFFSET'] = parseFloat(event.attributes['TIME-OFFSET']);\n            event.attributes.PRECISE = /YES/.test(event.attributes.PRECISE);\n          }\n\n          _this2.trigger('data', event);\n\n          return;\n        }\n\n        match = /^#EXT-X-CUE-OUT-CONT:?(.*)?$/.exec(newLine);\n\n        if (match) {\n          event = {\n            type: 'tag',\n            tagType: 'cue-out-cont'\n          };\n\n          if (match[1]) {\n            event.data = match[1];\n          } else {\n            event.data = '';\n          }\n\n          _this2.trigger('data', event);\n\n          return;\n        }\n\n        match = /^#EXT-X-CUE-OUT:?(.*)?$/.exec(newLine);\n\n        if (match) {\n          event = {\n            type: 'tag',\n            tagType: 'cue-out'\n          };\n\n          if (match[1]) {\n            event.data = match[1];\n          } else {\n            event.data = '';\n          }\n\n          _this2.trigger('data', event);\n\n          return;\n        }\n\n        match = /^#EXT-X-CUE-IN:?(.*)?$/.exec(newLine);\n\n        if (match) {\n          event = {\n            type: 'tag',\n            tagType: 'cue-in'\n          };\n\n          if (match[1]) {\n            event.data = match[1];\n          } else {\n            event.data = '';\n          }\n\n          _this2.trigger('data', event);\n\n          return;\n        } // unknown tag type\n\n\n        _this2.trigger('data', {\n          type: 'tag',\n          data: newLine.slice(4)\n        });\n      });\n    };\n    /**\n     * Add a parser for custom headers\n     *\n     * @param {Object}   options              a map of options for the added parser\n     * @param {RegExp}   options.expression   a regular expression to match the custom header\n     * @param {string}   options.customType   the custom type to register to the output\n     * @param {Function} [options.dataParser] function to parse the line into an object\n     * @param {boolean}  [options.segment]    should tag data be attached to the segment object\n     */\n\n\n    _proto.addParser = function addParser(_ref) {\n      var _this3 = this;\n\n      var expression = _ref.expression,\n          customType = _ref.customType,\n          dataParser = _ref.dataParser,\n          segment = _ref.segment;\n\n      if (typeof dataParser !== 'function') {\n        dataParser = function dataParser(line) {\n          return line;\n        };\n      }\n\n      this.customParsers.push(function (line) {\n        var match = expression.exec(line);\n\n        if (match) {\n          _this3.trigger('data', {\n            type: 'custom',\n            data: dataParser(line),\n            customType: customType,\n            segment: segment\n          });\n\n          return true;\n        }\n      });\n    };\n    /**\n     * Add a custom header mapper\n     *\n     * @param {Object}   options\n     * @param {RegExp}   options.expression   a regular expression to match the custom header\n     * @param {Function} options.map          function to translate tag into a different tag\n     */\n\n\n    _proto.addTagMapper = function addTagMapper(_ref2) {\n      var expression = _ref2.expression,\n          map = _ref2.map;\n\n      var mapFn = function mapFn(line) {\n        if (expression.test(line)) {\n          return map(line);\n        }\n\n        return line;\n      };\n\n      this.tagMappers.push(mapFn);\n    };\n\n    return ParseStream;\n  }(Stream);\n  /**\n   * A parser for M3U8 files. The current interpretation of the input is\n   * exposed as a property `manifest` on parser objects. It's just two lines to\n   * create and parse a manifest once you have the contents available as a string:\n   *\n   * ```js\n   * var parser = new m3u8.Parser();\n   * parser.push(xhr.responseText);\n   * ```\n   *\n   * New input can later be applied to update the manifest object by calling\n   * `push` again.\n   *\n   * The parser attempts to create a usable manifest object even if the\n   * underlying input is somewhat nonsensical. It emits `info` and `warning`\n   * events during the parse if it encounters input that seems invalid or\n   * requires some property of the manifest object to be defaulted.\n   *\n   * @class Parser\n   * @extends Stream\n   */\n\n\n  var Parser =\n  /*#__PURE__*/\n  function (_Stream) {\n    _inheritsLoose$1(Parser, _Stream);\n\n    function Parser() {\n      var _this;\n\n      _this = _Stream.call(this) || this;\n      _this.lineStream = new LineStream();\n      _this.parseStream = new ParseStream();\n\n      _this.lineStream.pipe(_this.parseStream);\n      /* eslint-disable consistent-this */\n\n\n      var self = _assertThisInitialized$1(_assertThisInitialized$1(_this));\n      /* eslint-enable consistent-this */\n\n\n      var uris = [];\n      var currentUri = {}; // if specified, the active EXT-X-MAP definition\n\n      var currentMap; // if specified, the active decryption key\n\n      var _key;\n\n      var noop = function noop() {};\n\n      var defaultMediaGroups = {\n        'AUDIO': {},\n        'VIDEO': {},\n        'CLOSED-CAPTIONS': {},\n        'SUBTITLES': {}\n      }; // group segments into numbered timelines delineated by discontinuities\n\n      var currentTimeline = 0; // the manifest is empty until the parse stream begins delivering data\n\n      _this.manifest = {\n        allowCache: true,\n        discontinuityStarts: [],\n        segments: []\n      }; // update the manifest with the m3u8 entry from the parse stream\n\n      _this.parseStream.on('data', function (entry) {\n        var mediaGroup;\n        var rendition;\n        ({\n          tag: function tag() {\n            // switch based on the tag type\n            (({\n              'allow-cache': function allowCache() {\n                this.manifest.allowCache = entry.allowed;\n\n                if (!('allowed' in entry)) {\n                  this.trigger('info', {\n                    message: 'defaulting allowCache to YES'\n                  });\n                  this.manifest.allowCache = true;\n                }\n              },\n              byterange: function byterange() {\n                var byterange = {};\n\n                if ('length' in entry) {\n                  currentUri.byterange = byterange;\n                  byterange.length = entry.length;\n\n                  if (!('offset' in entry)) {\n                    this.trigger('info', {\n                      message: 'defaulting offset to zero'\n                    });\n                    entry.offset = 0;\n                  }\n                }\n\n                if ('offset' in entry) {\n                  currentUri.byterange = byterange;\n                  byterange.offset = entry.offset;\n                }\n              },\n              endlist: function endlist() {\n                this.manifest.endList = true;\n              },\n              inf: function inf() {\n                if (!('mediaSequence' in this.manifest)) {\n                  this.manifest.mediaSequence = 0;\n                  this.trigger('info', {\n                    message: 'defaulting media sequence to zero'\n                  });\n                }\n\n                if (!('discontinuitySequence' in this.manifest)) {\n                  this.manifest.discontinuitySequence = 0;\n                  this.trigger('info', {\n                    message: 'defaulting discontinuity sequence to zero'\n                  });\n                }\n\n                if (entry.duration > 0) {\n                  currentUri.duration = entry.duration;\n                }\n\n                if (entry.duration === 0) {\n                  currentUri.duration = 0.01;\n                  this.trigger('info', {\n                    message: 'updating zero segment duration to a small value'\n                  });\n                }\n\n                this.manifest.segments = uris;\n              },\n              key: function key() {\n                if (!entry.attributes) {\n                  this.trigger('warn', {\n                    message: 'ignoring key declaration without attribute list'\n                  });\n                  return;\n                } // clear the active encryption key\n\n\n                if (entry.attributes.METHOD === 'NONE') {\n                  _key = null;\n                  return;\n                }\n\n                if (!entry.attributes.URI) {\n                  this.trigger('warn', {\n                    message: 'ignoring key declaration without URI'\n                  });\n                  return;\n                }\n\n                if (!entry.attributes.METHOD) {\n                  this.trigger('warn', {\n                    message: 'defaulting key method to AES-128'\n                  });\n                } // setup an encryption key for upcoming segments\n\n\n                _key = {\n                  method: entry.attributes.METHOD || 'AES-128',\n                  uri: entry.attributes.URI\n                };\n\n                if (typeof entry.attributes.IV !== 'undefined') {\n                  _key.iv = entry.attributes.IV;\n                }\n              },\n              'media-sequence': function mediaSequence() {\n                if (!isFinite(entry.number)) {\n                  this.trigger('warn', {\n                    message: 'ignoring invalid media sequence: ' + entry.number\n                  });\n                  return;\n                }\n\n                this.manifest.mediaSequence = entry.number;\n              },\n              'discontinuity-sequence': function discontinuitySequence() {\n                if (!isFinite(entry.number)) {\n                  this.trigger('warn', {\n                    message: 'ignoring invalid discontinuity sequence: ' + entry.number\n                  });\n                  return;\n                }\n\n                this.manifest.discontinuitySequence = entry.number;\n                currentTimeline = entry.number;\n              },\n              'playlist-type': function playlistType() {\n                if (!/VOD|EVENT/.test(entry.playlistType)) {\n                  this.trigger('warn', {\n                    message: 'ignoring unknown playlist type: ' + entry.playlist\n                  });\n                  return;\n                }\n\n                this.manifest.playlistType = entry.playlistType;\n              },\n              map: function map() {\n                currentMap = {};\n\n                if (entry.uri) {\n                  currentMap.uri = entry.uri;\n                }\n\n                if (entry.byterange) {\n                  currentMap.byterange = entry.byterange;\n                }\n              },\n              'stream-inf': function streamInf() {\n                this.manifest.playlists = uris;\n                this.manifest.mediaGroups = this.manifest.mediaGroups || defaultMediaGroups;\n\n                if (!entry.attributes) {\n                  this.trigger('warn', {\n                    message: 'ignoring empty stream-inf attributes'\n                  });\n                  return;\n                }\n\n                if (!currentUri.attributes) {\n                  currentUri.attributes = {};\n                }\n\n                _extends$1(currentUri.attributes, entry.attributes);\n              },\n              media: function media() {\n                this.manifest.mediaGroups = this.manifest.mediaGroups || defaultMediaGroups;\n\n                if (!(entry.attributes && entry.attributes.TYPE && entry.attributes['GROUP-ID'] && entry.attributes.NAME)) {\n                  this.trigger('warn', {\n                    message: 'ignoring incomplete or missing media group'\n                  });\n                  return;\n                } // find the media group, creating defaults as necessary\n\n\n                var mediaGroupType = this.manifest.mediaGroups[entry.attributes.TYPE];\n                mediaGroupType[entry.attributes['GROUP-ID']] = mediaGroupType[entry.attributes['GROUP-ID']] || {};\n                mediaGroup = mediaGroupType[entry.attributes['GROUP-ID']]; // collect the rendition metadata\n\n                rendition = {\n                  default: /yes/i.test(entry.attributes.DEFAULT)\n                };\n\n                if (rendition.default) {\n                  rendition.autoselect = true;\n                } else {\n                  rendition.autoselect = /yes/i.test(entry.attributes.AUTOSELECT);\n                }\n\n                if (entry.attributes.LANGUAGE) {\n                  rendition.language = entry.attributes.LANGUAGE;\n                }\n\n                if (entry.attributes.URI) {\n                  rendition.uri = entry.attributes.URI;\n                }\n\n                if (entry.attributes['INSTREAM-ID']) {\n                  rendition.instreamId = entry.attributes['INSTREAM-ID'];\n                }\n\n                if (entry.attributes.CHARACTERISTICS) {\n                  rendition.characteristics = entry.attributes.CHARACTERISTICS;\n                }\n\n                if (entry.attributes.FORCED) {\n                  rendition.forced = /yes/i.test(entry.attributes.FORCED);\n                } // insert the new rendition\n\n\n                mediaGroup[entry.attributes.NAME] = rendition;\n              },\n              discontinuity: function discontinuity() {\n                currentTimeline += 1;\n                currentUri.discontinuity = true;\n                this.manifest.discontinuityStarts.push(uris.length);\n              },\n              'program-date-time': function programDateTime() {\n                if (typeof this.manifest.dateTimeString === 'undefined') {\n                  // PROGRAM-DATE-TIME is a media-segment tag, but for backwards\n                  // compatibility, we add the first occurence of the PROGRAM-DATE-TIME tag\n                  // to the manifest object\n                  // TODO: Consider removing this in future major version\n                  this.manifest.dateTimeString = entry.dateTimeString;\n                  this.manifest.dateTimeObject = entry.dateTimeObject;\n                }\n\n                currentUri.dateTimeString = entry.dateTimeString;\n                currentUri.dateTimeObject = entry.dateTimeObject;\n              },\n              targetduration: function targetduration() {\n                if (!isFinite(entry.duration) || entry.duration < 0) {\n                  this.trigger('warn', {\n                    message: 'ignoring invalid target duration: ' + entry.duration\n                  });\n                  return;\n                }\n\n                this.manifest.targetDuration = entry.duration;\n              },\n              totalduration: function totalduration() {\n                if (!isFinite(entry.duration) || entry.duration < 0) {\n                  this.trigger('warn', {\n                    message: 'ignoring invalid total duration: ' + entry.duration\n                  });\n                  return;\n                }\n\n                this.manifest.totalDuration = entry.duration;\n              },\n              start: function start() {\n                if (!entry.attributes || isNaN(entry.attributes['TIME-OFFSET'])) {\n                  this.trigger('warn', {\n                    message: 'ignoring start declaration without appropriate attribute list'\n                  });\n                  return;\n                }\n\n                this.manifest.start = {\n                  timeOffset: entry.attributes['TIME-OFFSET'],\n                  precise: entry.attributes.PRECISE\n                };\n              },\n              'cue-out': function cueOut() {\n                currentUri.cueOut = entry.data;\n              },\n              'cue-out-cont': function cueOutCont() {\n                currentUri.cueOutCont = entry.data;\n              },\n              'cue-in': function cueIn() {\n                currentUri.cueIn = entry.data;\n              }\n            })[entry.tagType] || noop).call(self);\n          },\n          uri: function uri() {\n            currentUri.uri = entry.uri;\n            uris.push(currentUri); // if no explicit duration was declared, use the target duration\n\n            if (this.manifest.targetDuration && !('duration' in currentUri)) {\n              this.trigger('warn', {\n                message: 'defaulting segment duration to the target duration'\n              });\n              currentUri.duration = this.manifest.targetDuration;\n            } // annotate with encryption information, if necessary\n\n\n            if (_key) {\n              currentUri.key = _key;\n            }\n\n            currentUri.timeline = currentTimeline; // annotate with initialization segment information, if necessary\n\n            if (currentMap) {\n              currentUri.map = currentMap;\n            } // prepare for the next URI\n\n\n            currentUri = {};\n          },\n          comment: function comment() {// comments are not important for playback\n          },\n          custom: function custom() {\n            // if this is segment-level data attach the output to the segment\n            if (entry.segment) {\n              currentUri.custom = currentUri.custom || {};\n              currentUri.custom[entry.customType] = entry.data; // if this is manifest-level data attach to the top level manifest object\n            } else {\n              this.manifest.custom = this.manifest.custom || {};\n              this.manifest.custom[entry.customType] = entry.data;\n            }\n          }\n        })[entry.type].call(self);\n      });\n\n      return _this;\n    }\n    /**\n     * Parse the input string and update the manifest object.\n     *\n     * @param {string} chunk a potentially incomplete portion of the manifest\n     */\n\n\n    var _proto = Parser.prototype;\n\n    _proto.push = function push(chunk) {\n      this.lineStream.push(chunk);\n    };\n    /**\n     * Flush any remaining input. This can be handy if the last line of an M3U8\n     * manifest did not contain a trailing newline but the file has been\n     * completely received.\n     */\n\n\n    _proto.end = function end() {\n      // flush any buffered input\n      this.lineStream.push('\\n');\n    };\n    /**\n     * Add an additional parser for non-standard tags\n     *\n     * @param {Object}   options              a map of options for the added parser\n     * @param {RegExp}   options.expression   a regular expression to match the custom header\n     * @param {string}   options.type         the type to register to the output\n     * @param {Function} [options.dataParser] function to parse the line into an object\n     * @param {boolean}  [options.segment]    should tag data be attached to the segment object\n     */\n\n\n    _proto.addParser = function addParser(options) {\n      this.parseStream.addParser(options);\n    };\n    /**\n     * Add a custom header mapper\n     *\n     * @param {Object}   options\n     * @param {RegExp}   options.expression   a regular expression to match the custom header\n     * @param {Function} options.map          function to translate tag into a different tag\n     */\n\n\n    _proto.addTagMapper = function addTagMapper(options) {\n      this.parseStream.addTagMapper(options);\n    };\n\n    return Parser;\n  }(Stream);\n\n  /*! @name mpd-parser @version 0.7.0 @license Apache-2.0 */\n\n  var isObject$1 = function isObject(obj) {\n    return !!obj && typeof obj === 'object';\n  };\n\n  var merge = function merge() {\n    for (var _len = arguments.length, objects = new Array(_len), _key = 0; _key < _len; _key++) {\n      objects[_key] = arguments[_key];\n    }\n\n    return objects.reduce(function (result, source) {\n      Object.keys(source).forEach(function (key) {\n        if (Array.isArray(result[key]) && Array.isArray(source[key])) {\n          result[key] = result[key].concat(source[key]);\n        } else if (isObject$1(result[key]) && isObject$1(source[key])) {\n          result[key] = merge(result[key], source[key]);\n        } else {\n          result[key] = source[key];\n        }\n      });\n      return result;\n    }, {});\n  };\n\n  var values = function values(o) {\n    return Object.keys(o).map(function (k) {\n      return o[k];\n    });\n  };\n\n  var range = function range(start, end) {\n    var result = [];\n\n    for (var i = start; i < end; i++) {\n      result.push(i);\n    }\n\n    return result;\n  };\n\n  var flatten = function flatten(lists) {\n    return lists.reduce(function (x, y) {\n      return x.concat(y);\n    }, []);\n  };\n\n  var from = function from(list) {\n    if (!list.length) {\n      return [];\n    }\n\n    var result = [];\n\n    for (var i = 0; i < list.length; i++) {\n      result.push(list[i]);\n    }\n\n    return result;\n  };\n\n  var findIndexes = function findIndexes(l, key) {\n    return l.reduce(function (a, e, i) {\n      if (e[key]) {\n        a.push(i);\n      }\n\n      return a;\n    }, []);\n  };\n\n  var mergeDiscontiguousPlaylists = function mergeDiscontiguousPlaylists(playlists) {\n    var mergedPlaylists = values(playlists.reduce(function (acc, playlist) {\n      // assuming playlist IDs are the same across periods\n      // TODO: handle multiperiod where representation sets are not the same\n      // across periods\n      var name = playlist.attributes.id + (playlist.attributes.lang || ''); // Periods after first\n\n      if (acc[name]) {\n        var _acc$name$segments; // first segment of subsequent periods signal a discontinuity\n\n\n        playlist.segments[0].discontinuity = true;\n\n        (_acc$name$segments = acc[name].segments).push.apply(_acc$name$segments, playlist.segments); // bubble up contentProtection, this assumes all DRM content\n        // has the same contentProtection\n\n\n        if (playlist.attributes.contentProtection) {\n          acc[name].attributes.contentProtection = playlist.attributes.contentProtection;\n        }\n      } else {\n        // first Period\n        acc[name] = playlist;\n      }\n\n      return acc;\n    }, {}));\n    return mergedPlaylists.map(function (playlist) {\n      playlist.discontinuityStarts = findIndexes(playlist.segments, 'discontinuity');\n      return playlist;\n    });\n  };\n\n  var formatAudioPlaylist = function formatAudioPlaylist(_ref) {\n    var _attributes;\n\n    var attributes = _ref.attributes,\n        segments = _ref.segments;\n    var playlist = {\n      attributes: (_attributes = {\n        NAME: attributes.id,\n        BANDWIDTH: attributes.bandwidth,\n        CODECS: attributes.codecs\n      }, _attributes['PROGRAM-ID'] = 1, _attributes),\n      uri: '',\n      endList: (attributes.type || 'static') === 'static',\n      timeline: attributes.periodIndex,\n      resolvedUri: '',\n      targetDuration: attributes.duration,\n      segments: segments,\n      mediaSequence: segments.length ? segments[0].number : 1\n    };\n\n    if (attributes.contentProtection) {\n      playlist.contentProtection = attributes.contentProtection;\n    }\n\n    return playlist;\n  };\n\n  var formatVttPlaylist = function formatVttPlaylist(_ref2) {\n    var _attributes2;\n\n    var attributes = _ref2.attributes,\n        segments = _ref2.segments;\n\n    if (typeof segments === 'undefined') {\n      // vtt tracks may use single file in BaseURL\n      segments = [{\n        uri: attributes.baseUrl,\n        timeline: attributes.periodIndex,\n        resolvedUri: attributes.baseUrl || '',\n        duration: attributes.sourceDuration,\n        number: 0\n      }]; // targetDuration should be the same duration as the only segment\n\n      attributes.duration = attributes.sourceDuration;\n    }\n\n    return {\n      attributes: (_attributes2 = {\n        NAME: attributes.id,\n        BANDWIDTH: attributes.bandwidth\n      }, _attributes2['PROGRAM-ID'] = 1, _attributes2),\n      uri: '',\n      endList: (attributes.type || 'static') === 'static',\n      timeline: attributes.periodIndex,\n      resolvedUri: attributes.baseUrl || '',\n      targetDuration: attributes.duration,\n      segments: segments,\n      mediaSequence: segments.length ? segments[0].number : 1\n    };\n  };\n\n  var organizeAudioPlaylists = function organizeAudioPlaylists(playlists) {\n    return playlists.reduce(function (a, playlist) {\n      var role = playlist.attributes.role && playlist.attributes.role.value || 'main';\n      var language = playlist.attributes.lang || '';\n      var label = 'main';\n\n      if (language) {\n        label = playlist.attributes.lang + \" (\" + role + \")\";\n      } // skip if we already have the highest quality audio for a language\n\n\n      if (a[label] && a[label].playlists[0].attributes.BANDWIDTH > playlist.attributes.bandwidth) {\n        return a;\n      }\n\n      a[label] = {\n        language: language,\n        autoselect: true,\n        default: role === 'main',\n        playlists: [formatAudioPlaylist(playlist)],\n        uri: ''\n      };\n      return a;\n    }, {});\n  };\n\n  var organizeVttPlaylists = function organizeVttPlaylists(playlists) {\n    return playlists.reduce(function (a, playlist) {\n      var label = playlist.attributes.lang || 'text'; // skip if we already have subtitles\n\n      if (a[label]) {\n        return a;\n      }\n\n      a[label] = {\n        language: label,\n        default: false,\n        autoselect: false,\n        playlists: [formatVttPlaylist(playlist)],\n        uri: ''\n      };\n      return a;\n    }, {});\n  };\n\n  var formatVideoPlaylist = function formatVideoPlaylist(_ref3) {\n    var _attributes3;\n\n    var attributes = _ref3.attributes,\n        segments = _ref3.segments;\n    var playlist = {\n      attributes: (_attributes3 = {\n        NAME: attributes.id,\n        AUDIO: 'audio',\n        SUBTITLES: 'subs',\n        RESOLUTION: {\n          width: attributes.width,\n          height: attributes.height\n        },\n        CODECS: attributes.codecs,\n        BANDWIDTH: attributes.bandwidth\n      }, _attributes3['PROGRAM-ID'] = 1, _attributes3),\n      uri: '',\n      endList: (attributes.type || 'static') === 'static',\n      timeline: attributes.periodIndex,\n      resolvedUri: '',\n      targetDuration: attributes.duration,\n      segments: segments,\n      mediaSequence: segments.length ? segments[0].number : 1\n    };\n\n    if (attributes.contentProtection) {\n      playlist.contentProtection = attributes.contentProtection;\n    }\n\n    return playlist;\n  };\n\n  var toM3u8 = function toM3u8(dashPlaylists) {\n    var _mediaGroups;\n\n    if (!dashPlaylists.length) {\n      return {};\n    } // grab all master attributes\n\n\n    var _dashPlaylists$0$attr = dashPlaylists[0].attributes,\n        duration = _dashPlaylists$0$attr.sourceDuration,\n        _dashPlaylists$0$attr2 = _dashPlaylists$0$attr.minimumUpdatePeriod,\n        minimumUpdatePeriod = _dashPlaylists$0$attr2 === void 0 ? 0 : _dashPlaylists$0$attr2;\n\n    var videoOnly = function videoOnly(_ref4) {\n      var attributes = _ref4.attributes;\n      return attributes.mimeType === 'video/mp4' || attributes.contentType === 'video';\n    };\n\n    var audioOnly = function audioOnly(_ref5) {\n      var attributes = _ref5.attributes;\n      return attributes.mimeType === 'audio/mp4' || attributes.contentType === 'audio';\n    };\n\n    var vttOnly = function vttOnly(_ref6) {\n      var attributes = _ref6.attributes;\n      return attributes.mimeType === 'text/vtt' || attributes.contentType === 'text';\n    };\n\n    var videoPlaylists = mergeDiscontiguousPlaylists(dashPlaylists.filter(videoOnly)).map(formatVideoPlaylist);\n    var audioPlaylists = mergeDiscontiguousPlaylists(dashPlaylists.filter(audioOnly));\n    var vttPlaylists = dashPlaylists.filter(vttOnly);\n    var master = {\n      allowCache: true,\n      discontinuityStarts: [],\n      segments: [],\n      endList: true,\n      mediaGroups: (_mediaGroups = {\n        AUDIO: {},\n        VIDEO: {}\n      }, _mediaGroups['CLOSED-CAPTIONS'] = {}, _mediaGroups.SUBTITLES = {}, _mediaGroups),\n      uri: '',\n      duration: duration,\n      playlists: videoPlaylists,\n      minimumUpdatePeriod: minimumUpdatePeriod * 1000\n    };\n\n    if (audioPlaylists.length) {\n      master.mediaGroups.AUDIO.audio = organizeAudioPlaylists(audioPlaylists);\n    }\n\n    if (vttPlaylists.length) {\n      master.mediaGroups.SUBTITLES.subs = organizeVttPlaylists(vttPlaylists);\n    }\n\n    return master;\n  };\n\n  var commonjsGlobal$1 = typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};\n\n  function createCommonjsModule$1(fn, module) {\n    return module = {\n      exports: {}\n    }, fn(module, module.exports), module.exports;\n  }\n\n  var urlToolkit$1 = createCommonjsModule$1(function (module, exports) {\n    // see https://tools.ietf.org/html/rfc1808\n\n    /* jshint ignore:start */\n    (function (root) {\n      /* jshint ignore:end */\n      var URL_REGEX = /^((?:[a-zA-Z0-9+\\-.]+:)?)(\\/\\/[^\\/?#]*)?((?:[^\\/\\?#]*\\/)*.*?)??(;.*?)?(\\?.*?)?(#.*?)?$/;\n      var FIRST_SEGMENT_REGEX = /^([^\\/?#]*)(.*)$/;\n      var SLASH_DOT_REGEX = /(?:\\/|^)\\.(?=\\/)/g;\n      var SLASH_DOT_DOT_REGEX = /(?:\\/|^)\\.\\.\\/(?!\\.\\.\\/).*?(?=\\/)/g;\n      var URLToolkit = {\n        // jshint ignore:line\n        // If opts.alwaysNormalize is true then the path will always be normalized even when it starts with / or //\n        // E.g\n        // With opts.alwaysNormalize = false (default, spec compliant)\n        // http://a.com/b/cd + /e/f/../g => http://a.com/e/f/../g\n        // With opts.alwaysNormalize = true (not spec compliant)\n        // http://a.com/b/cd + /e/f/../g => http://a.com/e/g\n        buildAbsoluteURL: function buildAbsoluteURL(baseURL, relativeURL, opts) {\n          opts = opts || {}; // remove any remaining space and CRLF\n\n          baseURL = baseURL.trim();\n          relativeURL = relativeURL.trim();\n\n          if (!relativeURL) {\n            // 2a) If the embedded URL is entirely empty, it inherits the\n            // entire base URL (i.e., is set equal to the base URL)\n            // and we are done.\n            if (!opts.alwaysNormalize) {\n              return baseURL;\n            }\n\n            var basePartsForNormalise = URLToolkit.parseURL(baseURL);\n\n            if (!basePartsForNormalise) {\n              throw new Error('Error trying to parse base URL.');\n            }\n\n            basePartsForNormalise.path = URLToolkit.normalizePath(basePartsForNormalise.path);\n            return URLToolkit.buildURLFromParts(basePartsForNormalise);\n          }\n\n          var relativeParts = URLToolkit.parseURL(relativeURL);\n\n          if (!relativeParts) {\n            throw new Error('Error trying to parse relative URL.');\n          }\n\n          if (relativeParts.scheme) {\n            // 2b) If the embedded URL starts with a scheme name, it is\n            // interpreted as an absolute URL and we are done.\n            if (!opts.alwaysNormalize) {\n              return relativeURL;\n            }\n\n            relativeParts.path = URLToolkit.normalizePath(relativeParts.path);\n            return URLToolkit.buildURLFromParts(relativeParts);\n          }\n\n          var baseParts = URLToolkit.parseURL(baseURL);\n\n          if (!baseParts) {\n            throw new Error('Error trying to parse base URL.');\n          }\n\n          if (!baseParts.netLoc && baseParts.path && baseParts.path[0] !== '/') {\n            // If netLoc missing and path doesn't start with '/', assume everthing before the first '/' is the netLoc\n            // This causes 'example.com/a' to be handled as '//example.com/a' instead of '/example.com/a'\n            var pathParts = FIRST_SEGMENT_REGEX.exec(baseParts.path);\n            baseParts.netLoc = pathParts[1];\n            baseParts.path = pathParts[2];\n          }\n\n          if (baseParts.netLoc && !baseParts.path) {\n            baseParts.path = '/';\n          }\n\n          var builtParts = {\n            // 2c) Otherwise, the embedded URL inherits the scheme of\n            // the base URL.\n            scheme: baseParts.scheme,\n            netLoc: relativeParts.netLoc,\n            path: null,\n            params: relativeParts.params,\n            query: relativeParts.query,\n            fragment: relativeParts.fragment\n          };\n\n          if (!relativeParts.netLoc) {\n            // 3) If the embedded URL's <net_loc> is non-empty, we skip to\n            // Step 7.  Otherwise, the embedded URL inherits the <net_loc>\n            // (if any) of the base URL.\n            builtParts.netLoc = baseParts.netLoc; // 4) If the embedded URL path is preceded by a slash \"/\", the\n            // path is not relative and we skip to Step 7.\n\n            if (relativeParts.path[0] !== '/') {\n              if (!relativeParts.path) {\n                // 5) If the embedded URL path is empty (and not preceded by a\n                // slash), then the embedded URL inherits the base URL path\n                builtParts.path = baseParts.path; // 5a) if the embedded URL's <params> is non-empty, we skip to\n                // step 7; otherwise, it inherits the <params> of the base\n                // URL (if any) and\n\n                if (!relativeParts.params) {\n                  builtParts.params = baseParts.params; // 5b) if the embedded URL's <query> is non-empty, we skip to\n                  // step 7; otherwise, it inherits the <query> of the base\n                  // URL (if any) and we skip to step 7.\n\n                  if (!relativeParts.query) {\n                    builtParts.query = baseParts.query;\n                  }\n                }\n              } else {\n                // 6) The last segment of the base URL's path (anything\n                // following the rightmost slash \"/\", or the entire path if no\n                // slash is present) is removed and the embedded URL's path is\n                // appended in its place.\n                var baseURLPath = baseParts.path;\n                var newPath = baseURLPath.substring(0, baseURLPath.lastIndexOf('/') + 1) + relativeParts.path;\n                builtParts.path = URLToolkit.normalizePath(newPath);\n              }\n            }\n          }\n\n          if (builtParts.path === null) {\n            builtParts.path = opts.alwaysNormalize ? URLToolkit.normalizePath(relativeParts.path) : relativeParts.path;\n          }\n\n          return URLToolkit.buildURLFromParts(builtParts);\n        },\n        parseURL: function parseURL(url) {\n          var parts = URL_REGEX.exec(url);\n\n          if (!parts) {\n            return null;\n          }\n\n          return {\n            scheme: parts[1] || '',\n            netLoc: parts[2] || '',\n            path: parts[3] || '',\n            params: parts[4] || '',\n            query: parts[5] || '',\n            fragment: parts[6] || ''\n          };\n        },\n        normalizePath: function normalizePath(path) {\n          // The following operations are\n          // then applied, in order, to the new path:\n          // 6a) All occurrences of \"./\", where \".\" is a complete path\n          // segment, are removed.\n          // 6b) If the path ends with \".\" as a complete path segment,\n          // that \".\" is removed.\n          path = path.split('').reverse().join('').replace(SLASH_DOT_REGEX, ''); // 6c) All occurrences of \"<segment>/../\", where <segment> is a\n          // complete path segment not equal to \"..\", are removed.\n          // Removal of these path segments is performed iteratively,\n          // removing the leftmost matching pattern on each iteration,\n          // until no matching pattern remains.\n          // 6d) If the path ends with \"<segment>/..\", where <segment> is a\n          // complete path segment not equal to \"..\", that\n          // \"<segment>/..\" is removed.\n\n          while (path.length !== (path = path.replace(SLASH_DOT_DOT_REGEX, '')).length) {} // jshint ignore:line\n\n\n          return path.split('').reverse().join('');\n        },\n        buildURLFromParts: function buildURLFromParts(parts) {\n          return parts.scheme + parts.netLoc + parts.path + parts.params + parts.query + parts.fragment;\n        }\n      };\n      /* jshint ignore:start */\n\n      module.exports = URLToolkit;\n    })(commonjsGlobal$1);\n    /* jshint ignore:end */\n\n  });\n\n  var resolveUrl = function resolveUrl(baseUrl, relativeUrl) {\n    // return early if we don't need to resolve\n    if (/^[a-z]+:/i.test(relativeUrl)) {\n      return relativeUrl;\n    } // if the base URL is relative then combine with the current location\n\n\n    if (!/\\/\\//i.test(baseUrl)) {\n      baseUrl = urlToolkit$1.buildAbsoluteURL(window$1.location.href, baseUrl);\n    }\n\n    return urlToolkit$1.buildAbsoluteURL(baseUrl, relativeUrl);\n  };\n  /**\n   * @typedef {Object} SingleUri\n   * @property {string} uri - relative location of segment\n   * @property {string} resolvedUri - resolved location of segment\n   * @property {Object} byterange - Object containing information on how to make byte range\n   *   requests following byte-range-spec per RFC2616.\n   * @property {String} byterange.length - length of range request\n   * @property {String} byterange.offset - byte offset of range request\n   *\n   * @see https://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.35.1\n   */\n\n  /**\n   * Converts a URLType node (5.3.9.2.3 Table 13) to a segment object\n   * that conforms to how m3u8-parser is structured\n   *\n   * @see https://github.com/videojs/m3u8-parser\n   *\n   * @param {string} baseUrl - baseUrl provided by <BaseUrl> nodes\n   * @param {string} source - source url for segment\n   * @param {string} range - optional range used for range calls, follows\n   * @return {SingleUri} full segment information transformed into a format similar\n   *   to m3u8-parser\n   */\n\n\n  var urlTypeToSegment = function urlTypeToSegment(_ref) {\n    var _ref$baseUrl = _ref.baseUrl,\n        baseUrl = _ref$baseUrl === void 0 ? '' : _ref$baseUrl,\n        _ref$source = _ref.source,\n        source = _ref$source === void 0 ? '' : _ref$source,\n        _ref$range = _ref.range,\n        range = _ref$range === void 0 ? '' : _ref$range;\n    var init = {\n      uri: source,\n      resolvedUri: resolveUrl(baseUrl || '', source)\n    };\n\n    if (range) {\n      var ranges = range.split('-');\n      var startRange = parseInt(ranges[0], 10);\n      var endRange = parseInt(ranges[1], 10);\n      init.byterange = {\n        length: endRange - startRange,\n        offset: startRange\n      };\n    }\n\n    return init;\n  };\n  /**\n   * Calculates the R (repetition) value for a live stream (for the final segment\n   * in a manifest where the r value is negative 1)\n   *\n   * @param {Object} attributes\n   *        Object containing all inherited attributes from parent elements with attribute\n   *        names as keys\n   * @param {number} time\n   *        current time (typically the total time up until the final segment)\n   * @param {number} duration\n   *        duration property for the given <S />\n   *\n   * @return {number}\n   *        R value to reach the end of the given period\n   */\n\n\n  var getLiveRValue = function getLiveRValue(attributes, time, duration) {\n    var NOW = attributes.NOW,\n        clientOffset = attributes.clientOffset,\n        availabilityStartTime = attributes.availabilityStartTime,\n        _attributes$timescale = attributes.timescale,\n        timescale = _attributes$timescale === void 0 ? 1 : _attributes$timescale,\n        _attributes$start = attributes.start,\n        start = _attributes$start === void 0 ? 0 : _attributes$start,\n        _attributes$minimumUp = attributes.minimumUpdatePeriod,\n        minimumUpdatePeriod = _attributes$minimumUp === void 0 ? 0 : _attributes$minimumUp;\n    var now = (NOW + clientOffset) / 1000;\n    var periodStartWC = availabilityStartTime + start;\n    var periodEndWC = now + minimumUpdatePeriod;\n    var periodDuration = periodEndWC - periodStartWC;\n    return Math.ceil((periodDuration * timescale - time) / duration);\n  };\n  /**\n   * Uses information provided by SegmentTemplate.SegmentTimeline to determine segment\n   * timing and duration\n   *\n   * @param {Object} attributes\n   *        Object containing all inherited attributes from parent elements with attribute\n   *        names as keys\n   * @param {Object[]} segmentTimeline\n   *        List of objects representing the attributes of each S element contained within\n   *\n   * @return {{number: number, duration: number, time: number, timeline: number}[]}\n   *         List of Objects with segment timing and duration info\n   */\n\n\n  var parseByTimeline = function parseByTimeline(attributes, segmentTimeline) {\n    var _attributes$type = attributes.type,\n        type = _attributes$type === void 0 ? 'static' : _attributes$type,\n        _attributes$minimumUp2 = attributes.minimumUpdatePeriod,\n        minimumUpdatePeriod = _attributes$minimumUp2 === void 0 ? 0 : _attributes$minimumUp2,\n        _attributes$media = attributes.media,\n        media = _attributes$media === void 0 ? '' : _attributes$media,\n        sourceDuration = attributes.sourceDuration,\n        _attributes$timescale2 = attributes.timescale,\n        timescale = _attributes$timescale2 === void 0 ? 1 : _attributes$timescale2,\n        _attributes$startNumb = attributes.startNumber,\n        startNumber = _attributes$startNumb === void 0 ? 1 : _attributes$startNumb,\n        timeline = attributes.periodIndex;\n    var segments = [];\n    var time = -1;\n\n    for (var sIndex = 0; sIndex < segmentTimeline.length; sIndex++) {\n      var S = segmentTimeline[sIndex];\n      var duration = S.d;\n      var repeat = S.r || 0;\n      var segmentTime = S.t || 0;\n\n      if (time < 0) {\n        // first segment\n        time = segmentTime;\n      }\n\n      if (segmentTime && segmentTime > time) {\n        // discontinuity\n        // TODO: How to handle this type of discontinuity\n        // timeline++ here would treat it like HLS discontuity and content would\n        // get appended without gap\n        // E.G.\n        //  <S t=\"0\" d=\"1\" />\n        //  <S d=\"1\" />\n        //  <S d=\"1\" />\n        //  <S t=\"5\" d=\"1\" />\n        // would have $Time$ values of [0, 1, 2, 5]\n        // should this be appened at time positions [0, 1, 2, 3],(#EXT-X-DISCONTINUITY)\n        // or [0, 1, 2, gap, gap, 5]? (#EXT-X-GAP)\n        // does the value of sourceDuration consider this when calculating arbitrary\n        // negative @r repeat value?\n        // E.G. Same elements as above with this added at the end\n        //  <S d=\"1\" r=\"-1\" />\n        //  with a sourceDuration of 10\n        // Would the 2 gaps be included in the time duration calculations resulting in\n        // 8 segments with $Time$ values of [0, 1, 2, 5, 6, 7, 8, 9] or 10 segments\n        // with $Time$ values of [0, 1, 2, 5, 6, 7, 8, 9, 10, 11] ?\n        time = segmentTime;\n      }\n\n      var count = void 0;\n\n      if (repeat < 0) {\n        var nextS = sIndex + 1;\n\n        if (nextS === segmentTimeline.length) {\n          // last segment\n          if (type === 'dynamic' && minimumUpdatePeriod > 0 && media.indexOf('$Number$') > 0) {\n            count = getLiveRValue(attributes, time, duration);\n          } else {\n            // TODO: This may be incorrect depending on conclusion of TODO above\n            count = (sourceDuration * timescale - time) / duration;\n          }\n        } else {\n          count = (segmentTimeline[nextS].t - time) / duration;\n        }\n      } else {\n        count = repeat + 1;\n      }\n\n      var end = startNumber + segments.length + count;\n      var number = startNumber + segments.length;\n\n      while (number < end) {\n        segments.push({\n          number: number,\n          duration: duration / timescale,\n          time: time,\n          timeline: timeline\n        });\n        time += duration;\n        number++;\n      }\n    }\n\n    return segments;\n  };\n  /**\n   * Functions for calculating the range of available segments in static and dynamic\n   * manifests.\n   */\n\n\n  var segmentRange = {\n    /**\n     * Returns the entire range of available segments for a static MPD\n     *\n     * @param {Object} attributes\n     *        Inheritied MPD attributes\n     * @return {{ start: number, end: number }}\n     *         The start and end numbers for available segments\n     */\n    static: function _static(attributes) {\n      var duration = attributes.duration,\n          _attributes$timescale = attributes.timescale,\n          timescale = _attributes$timescale === void 0 ? 1 : _attributes$timescale,\n          sourceDuration = attributes.sourceDuration;\n      return {\n        start: 0,\n        end: Math.ceil(sourceDuration / (duration / timescale))\n      };\n    },\n\n    /**\n     * Returns the current live window range of available segments for a dynamic MPD\n     *\n     * @param {Object} attributes\n     *        Inheritied MPD attributes\n     * @return {{ start: number, end: number }}\n     *         The start and end numbers for available segments\n     */\n    dynamic: function dynamic(attributes) {\n      var NOW = attributes.NOW,\n          clientOffset = attributes.clientOffset,\n          availabilityStartTime = attributes.availabilityStartTime,\n          _attributes$timescale2 = attributes.timescale,\n          timescale = _attributes$timescale2 === void 0 ? 1 : _attributes$timescale2,\n          duration = attributes.duration,\n          _attributes$start = attributes.start,\n          start = _attributes$start === void 0 ? 0 : _attributes$start,\n          _attributes$minimumUp = attributes.minimumUpdatePeriod,\n          minimumUpdatePeriod = _attributes$minimumUp === void 0 ? 0 : _attributes$minimumUp,\n          _attributes$timeShift = attributes.timeShiftBufferDepth,\n          timeShiftBufferDepth = _attributes$timeShift === void 0 ? Infinity : _attributes$timeShift;\n      var now = (NOW + clientOffset) / 1000;\n      var periodStartWC = availabilityStartTime + start;\n      var periodEndWC = now + minimumUpdatePeriod;\n      var periodDuration = periodEndWC - periodStartWC;\n      var segmentCount = Math.ceil(periodDuration * timescale / duration);\n      var availableStart = Math.floor((now - periodStartWC - timeShiftBufferDepth) * timescale / duration);\n      var availableEnd = Math.floor((now - periodStartWC) * timescale / duration);\n      return {\n        start: Math.max(0, availableStart),\n        end: Math.min(segmentCount, availableEnd)\n      };\n    }\n  };\n  /**\n   * Maps a range of numbers to objects with information needed to build the corresponding\n   * segment list\n   *\n   * @name toSegmentsCallback\n   * @function\n   * @param {number} number\n   *        Number of the segment\n   * @param {number} index\n   *        Index of the number in the range list\n   * @return {{ number: Number, duration: Number, timeline: Number, time: Number }}\n   *         Object with segment timing and duration info\n   */\n\n  /**\n   * Returns a callback for Array.prototype.map for mapping a range of numbers to\n   * information needed to build the segment list.\n   *\n   * @param {Object} attributes\n   *        Inherited MPD attributes\n   * @return {toSegmentsCallback}\n   *         Callback map function\n   */\n\n  var toSegments = function toSegments(attributes) {\n    return function (number, index) {\n      var duration = attributes.duration,\n          _attributes$timescale3 = attributes.timescale,\n          timescale = _attributes$timescale3 === void 0 ? 1 : _attributes$timescale3,\n          periodIndex = attributes.periodIndex,\n          _attributes$startNumb = attributes.startNumber,\n          startNumber = _attributes$startNumb === void 0 ? 1 : _attributes$startNumb;\n      return {\n        number: startNumber + number,\n        duration: duration / timescale,\n        timeline: periodIndex,\n        time: index * duration\n      };\n    };\n  };\n  /**\n   * Returns a list of objects containing segment timing and duration info used for\n   * building the list of segments. This uses the @duration attribute specified\n   * in the MPD manifest to derive the range of segments.\n   *\n   * @param {Object} attributes\n   *        Inherited MPD attributes\n   * @return {{number: number, duration: number, time: number, timeline: number}[]}\n   *         List of Objects with segment timing and duration info\n   */\n\n\n  var parseByDuration = function parseByDuration(attributes) {\n    var _attributes$type = attributes.type,\n        type = _attributes$type === void 0 ? 'static' : _attributes$type,\n        duration = attributes.duration,\n        _attributes$timescale4 = attributes.timescale,\n        timescale = _attributes$timescale4 === void 0 ? 1 : _attributes$timescale4,\n        sourceDuration = attributes.sourceDuration;\n\n    var _segmentRange$type = segmentRange[type](attributes),\n        start = _segmentRange$type.start,\n        end = _segmentRange$type.end;\n\n    var segments = range(start, end).map(toSegments(attributes));\n\n    if (type === 'static') {\n      var index = segments.length - 1; // final segment may be less than full segment duration\n\n      segments[index].duration = sourceDuration - duration / timescale * index;\n    }\n\n    return segments;\n  };\n\n  var identifierPattern = /\\$([A-z]*)(?:(%0)([0-9]+)d)?\\$/g;\n  /**\n   * Replaces template identifiers with corresponding values. To be used as the callback\n   * for String.prototype.replace\n   *\n   * @name replaceCallback\n   * @function\n   * @param {string} match\n   *        Entire match of identifier\n   * @param {string} identifier\n   *        Name of matched identifier\n   * @param {string} format\n   *        Format tag string. Its presence indicates that padding is expected\n   * @param {string} width\n   *        Desired length of the replaced value. Values less than this width shall be left\n   *        zero padded\n   * @return {string}\n   *         Replacement for the matched identifier\n   */\n\n  /**\n   * Returns a function to be used as a callback for String.prototype.replace to replace\n   * template identifiers\n   *\n   * @param {Obect} values\n   *        Object containing values that shall be used to replace known identifiers\n   * @param {number} values.RepresentationID\n   *        Value of the Representation@id attribute\n   * @param {number} values.Number\n   *        Number of the corresponding segment\n   * @param {number} values.Bandwidth\n   *        Value of the Representation@bandwidth attribute.\n   * @param {number} values.Time\n   *        Timestamp value of the corresponding segment\n   * @return {replaceCallback}\n   *         Callback to be used with String.prototype.replace to replace identifiers\n   */\n\n  var identifierReplacement = function identifierReplacement(values) {\n    return function (match, identifier, format, width) {\n      if (match === '$$') {\n        // escape sequence\n        return '$';\n      }\n\n      if (typeof values[identifier] === 'undefined') {\n        return match;\n      }\n\n      var value = '' + values[identifier];\n\n      if (identifier === 'RepresentationID') {\n        // Format tag shall not be present with RepresentationID\n        return value;\n      }\n\n      if (!format) {\n        width = 1;\n      } else {\n        width = parseInt(width, 10);\n      }\n\n      if (value.length >= width) {\n        return value;\n      }\n\n      return \"\" + new Array(width - value.length + 1).join('0') + value;\n    };\n  };\n  /**\n   * Constructs a segment url from a template string\n   *\n   * @param {string} url\n   *        Template string to construct url from\n   * @param {Obect} values\n   *        Object containing values that shall be used to replace known identifiers\n   * @param {number} values.RepresentationID\n   *        Value of the Representation@id attribute\n   * @param {number} values.Number\n   *        Number of the corresponding segment\n   * @param {number} values.Bandwidth\n   *        Value of the Representation@bandwidth attribute.\n   * @param {number} values.Time\n   *        Timestamp value of the corresponding segment\n   * @return {string}\n   *         Segment url with identifiers replaced\n   */\n\n\n  var constructTemplateUrl = function constructTemplateUrl(url, values) {\n    return url.replace(identifierPattern, identifierReplacement(values));\n  };\n  /**\n   * Generates a list of objects containing timing and duration information about each\n   * segment needed to generate segment uris and the complete segment object\n   *\n   * @param {Object} attributes\n   *        Object containing all inherited attributes from parent elements with attribute\n   *        names as keys\n   * @param {Object[]|undefined} segmentTimeline\n   *        List of objects representing the attributes of each S element contained within\n   *        the SegmentTimeline element\n   * @return {{number: number, duration: number, time: number, timeline: number}[]}\n   *         List of Objects with segment timing and duration info\n   */\n\n\n  var parseTemplateInfo = function parseTemplateInfo(attributes, segmentTimeline) {\n    if (!attributes.duration && !segmentTimeline) {\n      // if neither @duration or SegmentTimeline are present, then there shall be exactly\n      // one media segment\n      return [{\n        number: attributes.startNumber || 1,\n        duration: attributes.sourceDuration,\n        time: 0,\n        timeline: attributes.periodIndex\n      }];\n    }\n\n    if (attributes.duration) {\n      return parseByDuration(attributes);\n    }\n\n    return parseByTimeline(attributes, segmentTimeline);\n  };\n  /**\n   * Generates a list of segments using information provided by the SegmentTemplate element\n   *\n   * @param {Object} attributes\n   *        Object containing all inherited attributes from parent elements with attribute\n   *        names as keys\n   * @param {Object[]|undefined} segmentTimeline\n   *        List of objects representing the attributes of each S element contained within\n   *        the SegmentTimeline element\n   * @return {Object[]}\n   *         List of segment objects\n   */\n\n\n  var segmentsFromTemplate = function segmentsFromTemplate(attributes, segmentTimeline) {\n    var templateValues = {\n      RepresentationID: attributes.id,\n      Bandwidth: attributes.bandwidth || 0\n    };\n    var _attributes$initializ = attributes.initialization,\n        initialization = _attributes$initializ === void 0 ? {\n      sourceURL: '',\n      range: ''\n    } : _attributes$initializ;\n    var mapSegment = urlTypeToSegment({\n      baseUrl: attributes.baseUrl,\n      source: constructTemplateUrl(initialization.sourceURL, templateValues),\n      range: initialization.range\n    });\n    var segments = parseTemplateInfo(attributes, segmentTimeline);\n    return segments.map(function (segment) {\n      templateValues.Number = segment.number;\n      templateValues.Time = segment.time;\n      var uri = constructTemplateUrl(attributes.media || '', templateValues);\n      return {\n        uri: uri,\n        timeline: segment.timeline,\n        duration: segment.duration,\n        resolvedUri: resolveUrl(attributes.baseUrl || '', uri),\n        map: mapSegment,\n        number: segment.number\n      };\n    });\n  };\n\n  var errors = {\n    INVALID_NUMBER_OF_PERIOD: 'INVALID_NUMBER_OF_PERIOD',\n    DASH_EMPTY_MANIFEST: 'DASH_EMPTY_MANIFEST',\n    DASH_INVALID_XML: 'DASH_INVALID_XML',\n    NO_BASE_URL: 'NO_BASE_URL',\n    MISSING_SEGMENT_INFORMATION: 'MISSING_SEGMENT_INFORMATION',\n    SEGMENT_TIME_UNSPECIFIED: 'SEGMENT_TIME_UNSPECIFIED',\n    UNSUPPORTED_UTC_TIMING_SCHEME: 'UNSUPPORTED_UTC_TIMING_SCHEME'\n  };\n  /**\n   * Converts a <SegmentUrl> (of type URLType from the DASH spec 5.3.9.2 Table 14)\n   * to an object that matches the output of a segment in videojs/mpd-parser\n   *\n   * @param {Object} attributes\n   *   Object containing all inherited attributes from parent elements with attribute\n   *   names as keys\n   * @param {Object} segmentUrl\n   *   <SegmentURL> node to translate into a segment object\n   * @return {Object} translated segment object\n   */\n\n  var SegmentURLToSegmentObject = function SegmentURLToSegmentObject(attributes, segmentUrl) {\n    var baseUrl = attributes.baseUrl,\n        _attributes$initializ = attributes.initialization,\n        initialization = _attributes$initializ === void 0 ? {} : _attributes$initializ;\n    var initSegment = urlTypeToSegment({\n      baseUrl: baseUrl,\n      source: initialization.sourceURL,\n      range: initialization.range\n    });\n    var segment = urlTypeToSegment({\n      baseUrl: baseUrl,\n      source: segmentUrl.media,\n      range: segmentUrl.mediaRange\n    });\n    segment.map = initSegment;\n    return segment;\n  };\n  /**\n   * Generates a list of segments using information provided by the SegmentList element\n   * SegmentList (DASH SPEC Section 5.3.9.3.2) contains a set of <SegmentURL> nodes.  Each\n   * node should be translated into segment.\n   *\n   * @param {Object} attributes\n   *   Object containing all inherited attributes from parent elements with attribute\n   *   names as keys\n   * @param {Object[]|undefined} segmentTimeline\n   *        List of objects representing the attributes of each S element contained within\n   *        the SegmentTimeline element\n   * @return {Object.<Array>} list of segments\n   */\n\n\n  var segmentsFromList = function segmentsFromList(attributes, segmentTimeline) {\n    var duration = attributes.duration,\n        _attributes$segmentUr = attributes.segmentUrls,\n        segmentUrls = _attributes$segmentUr === void 0 ? [] : _attributes$segmentUr; // Per spec (5.3.9.2.1) no way to determine segment duration OR\n    // if both SegmentTimeline and @duration are defined, it is outside of spec.\n\n    if (!duration && !segmentTimeline || duration && segmentTimeline) {\n      throw new Error(errors.SEGMENT_TIME_UNSPECIFIED);\n    }\n\n    var segmentUrlMap = segmentUrls.map(function (segmentUrlObject) {\n      return SegmentURLToSegmentObject(attributes, segmentUrlObject);\n    });\n    var segmentTimeInfo;\n\n    if (duration) {\n      segmentTimeInfo = parseByDuration(attributes);\n    }\n\n    if (segmentTimeline) {\n      segmentTimeInfo = parseByTimeline(attributes, segmentTimeline);\n    }\n\n    var segments = segmentTimeInfo.map(function (segmentTime, index) {\n      if (segmentUrlMap[index]) {\n        var segment = segmentUrlMap[index];\n        segment.timeline = segmentTime.timeline;\n        segment.duration = segmentTime.duration;\n        segment.number = segmentTime.number;\n        return segment;\n      } // Since we're mapping we should get rid of any blank segments (in case\n      // the given SegmentTimeline is handling for more elements than we have\n      // SegmentURLs for).\n\n    }).filter(function (segment) {\n      return segment;\n    });\n    return segments;\n  };\n  /**\n   * Translates SegmentBase into a set of segments.\n   * (DASH SPEC Section 5.3.9.3.2) contains a set of <SegmentURL> nodes.  Each\n   * node should be translated into segment.\n   *\n   * @param {Object} attributes\n   *   Object containing all inherited attributes from parent elements with attribute\n   *   names as keys\n   * @return {Object.<Array>} list of segments\n   */\n\n\n  var segmentsFromBase = function segmentsFromBase(attributes) {\n    var baseUrl = attributes.baseUrl,\n        _attributes$initializ = attributes.initialization,\n        initialization = _attributes$initializ === void 0 ? {} : _attributes$initializ,\n        sourceDuration = attributes.sourceDuration,\n        _attributes$timescale = attributes.timescale,\n        timescale = _attributes$timescale === void 0 ? 1 : _attributes$timescale,\n        _attributes$indexRang = attributes.indexRange,\n        indexRange = _attributes$indexRang === void 0 ? '' : _attributes$indexRang,\n        duration = attributes.duration; // base url is required for SegmentBase to work, per spec (Section 5.3.9.2.1)\n\n    if (!baseUrl) {\n      throw new Error(errors.NO_BASE_URL);\n    }\n\n    var initSegment = urlTypeToSegment({\n      baseUrl: baseUrl,\n      source: initialization.sourceURL,\n      range: initialization.range\n    });\n    var segment = urlTypeToSegment({\n      baseUrl: baseUrl,\n      source: baseUrl,\n      range: indexRange\n    });\n    segment.map = initSegment; // If there is a duration, use it, otherwise use the given duration of the source\n    // (since SegmentBase is only for one total segment)\n\n    if (duration) {\n      var segmentTimeInfo = parseByDuration(attributes);\n\n      if (segmentTimeInfo.length) {\n        segment.duration = segmentTimeInfo[0].duration;\n        segment.timeline = segmentTimeInfo[0].timeline;\n      }\n    } else if (sourceDuration) {\n      segment.duration = sourceDuration / timescale;\n      segment.timeline = 0;\n    } // This is used for mediaSequence\n\n\n    segment.number = 0;\n    return [segment];\n  };\n\n  var generateSegments = function generateSegments(_ref) {\n    var attributes = _ref.attributes,\n        segmentInfo = _ref.segmentInfo;\n    var segmentAttributes;\n    var segmentsFn;\n\n    if (segmentInfo.template) {\n      segmentsFn = segmentsFromTemplate;\n      segmentAttributes = merge(attributes, segmentInfo.template);\n    } else if (segmentInfo.base) {\n      segmentsFn = segmentsFromBase;\n      segmentAttributes = merge(attributes, segmentInfo.base);\n    } else if (segmentInfo.list) {\n      segmentsFn = segmentsFromList;\n      segmentAttributes = merge(attributes, segmentInfo.list);\n    }\n\n    if (!segmentsFn) {\n      return {\n        attributes: attributes\n      };\n    }\n\n    var segments = segmentsFn(segmentAttributes, segmentInfo.timeline); // The @duration attribute will be used to determin the playlist's targetDuration which\n    // must be in seconds. Since we've generated the segment list, we no longer need\n    // @duration to be in @timescale units, so we can convert it here.\n\n    if (segmentAttributes.duration) {\n      var _segmentAttributes = segmentAttributes,\n          duration = _segmentAttributes.duration,\n          _segmentAttributes$ti = _segmentAttributes.timescale,\n          timescale = _segmentAttributes$ti === void 0 ? 1 : _segmentAttributes$ti;\n      segmentAttributes.duration = duration / timescale;\n    } else if (segments.length) {\n      // if there is no @duration attribute, use the largest segment duration as\n      // as target duration\n      segmentAttributes.duration = segments.reduce(function (max, segment) {\n        return Math.max(max, Math.ceil(segment.duration));\n      }, 0);\n    } else {\n      segmentAttributes.duration = 0;\n    }\n\n    return {\n      attributes: segmentAttributes,\n      segments: segments\n    };\n  };\n\n  var toPlaylists = function toPlaylists(representations) {\n    return representations.map(generateSegments);\n  };\n\n  var findChildren = function findChildren(element, name) {\n    return from(element.childNodes).filter(function (_ref) {\n      var tagName = _ref.tagName;\n      return tagName === name;\n    });\n  };\n\n  var getContent = function getContent(element) {\n    return element.textContent.trim();\n  };\n\n  var parseDuration = function parseDuration(str) {\n    var SECONDS_IN_YEAR = 365 * 24 * 60 * 60;\n    var SECONDS_IN_MONTH = 30 * 24 * 60 * 60;\n    var SECONDS_IN_DAY = 24 * 60 * 60;\n    var SECONDS_IN_HOUR = 60 * 60;\n    var SECONDS_IN_MIN = 60; // P10Y10M10DT10H10M10.1S\n\n    var durationRegex = /P(?:(\\d*)Y)?(?:(\\d*)M)?(?:(\\d*)D)?(?:T(?:(\\d*)H)?(?:(\\d*)M)?(?:([\\d.]*)S)?)?/;\n    var match = durationRegex.exec(str);\n\n    if (!match) {\n      return 0;\n    }\n\n    var _match$slice = match.slice(1),\n        year = _match$slice[0],\n        month = _match$slice[1],\n        day = _match$slice[2],\n        hour = _match$slice[3],\n        minute = _match$slice[4],\n        second = _match$slice[5];\n\n    return parseFloat(year || 0) * SECONDS_IN_YEAR + parseFloat(month || 0) * SECONDS_IN_MONTH + parseFloat(day || 0) * SECONDS_IN_DAY + parseFloat(hour || 0) * SECONDS_IN_HOUR + parseFloat(minute || 0) * SECONDS_IN_MIN + parseFloat(second || 0);\n  };\n\n  var parseDate = function parseDate(str) {\n    // Date format without timezone according to ISO 8601\n    // YYY-MM-DDThh:mm:ss.ssssss\n    var dateRegex = /^\\d+-\\d+-\\d+T\\d+:\\d+:\\d+(\\.\\d+)?$/; // If the date string does not specifiy a timezone, we must specifiy UTC. This is\n    // expressed by ending with 'Z'\n\n    if (dateRegex.test(str)) {\n      str += 'Z';\n    }\n\n    return Date.parse(str);\n  };\n\n  var parsers = {\n    /**\n     * Specifies the duration of the entire Media Presentation. Format is a duration string\n     * as specified in ISO 8601\n     *\n     * @param {string} value\n     *        value of attribute as a string\n     * @return {number}\n     *         The duration in seconds\n     */\n    mediaPresentationDuration: function mediaPresentationDuration(value) {\n      return parseDuration(value);\n    },\n\n    /**\n     * Specifies the Segment availability start time for all Segments referred to in this\n     * MPD. For a dynamic manifest, it specifies the anchor for the earliest availability\n     * time. Format is a date string as specified in ISO 8601\n     *\n     * @param {string} value\n     *        value of attribute as a string\n     * @return {number}\n     *         The date as seconds from unix epoch\n     */\n    availabilityStartTime: function availabilityStartTime(value) {\n      return parseDate(value) / 1000;\n    },\n\n    /**\n     * Specifies the smallest period between potential changes to the MPD. Format is a\n     * duration string as specified in ISO 8601\n     *\n     * @param {string} value\n     *        value of attribute as a string\n     * @return {number}\n     *         The duration in seconds\n     */\n    minimumUpdatePeriod: function minimumUpdatePeriod(value) {\n      return parseDuration(value);\n    },\n\n    /**\n     * Specifies the duration of the smallest time shifting buffer for any Representation\n     * in the MPD. Format is a duration string as specified in ISO 8601\n     *\n     * @param {string} value\n     *        value of attribute as a string\n     * @return {number}\n     *         The duration in seconds\n     */\n    timeShiftBufferDepth: function timeShiftBufferDepth(value) {\n      return parseDuration(value);\n    },\n\n    /**\n     * Specifies the PeriodStart time of the Period relative to the availabilityStarttime.\n     * Format is a duration string as specified in ISO 8601\n     *\n     * @param {string} value\n     *        value of attribute as a string\n     * @return {number}\n     *         The duration in seconds\n     */\n    start: function start(value) {\n      return parseDuration(value);\n    },\n\n    /**\n     * Specifies the width of the visual presentation\n     *\n     * @param {string} value\n     *        value of attribute as a string\n     * @return {number}\n     *         The parsed width\n     */\n    width: function width(value) {\n      return parseInt(value, 10);\n    },\n\n    /**\n     * Specifies the height of the visual presentation\n     *\n     * @param {string} value\n     *        value of attribute as a string\n     * @return {number}\n     *         The parsed height\n     */\n    height: function height(value) {\n      return parseInt(value, 10);\n    },\n\n    /**\n     * Specifies the bitrate of the representation\n     *\n     * @param {string} value\n     *        value of attribute as a string\n     * @return {number}\n     *         The parsed bandwidth\n     */\n    bandwidth: function bandwidth(value) {\n      return parseInt(value, 10);\n    },\n\n    /**\n     * Specifies the number of the first Media Segment in this Representation in the Period\n     *\n     * @param {string} value\n     *        value of attribute as a string\n     * @return {number}\n     *         The parsed number\n     */\n    startNumber: function startNumber(value) {\n      return parseInt(value, 10);\n    },\n\n    /**\n     * Specifies the timescale in units per seconds\n     *\n     * @param {string} value\n     *        value of attribute as a string\n     * @return {number}\n     *         The aprsed timescale\n     */\n    timescale: function timescale(value) {\n      return parseInt(value, 10);\n    },\n\n    /**\n     * Specifies the constant approximate Segment duration\n     * NOTE: The <Period> element also contains an @duration attribute. This duration\n     *       specifies the duration of the Period. This attribute is currently not\n     *       supported by the rest of the parser, however we still check for it to prevent\n     *       errors.\n     *\n     * @param {string} value\n     *        value of attribute as a string\n     * @return {number}\n     *         The parsed duration\n     */\n    duration: function duration(value) {\n      var parsedValue = parseInt(value, 10);\n\n      if (isNaN(parsedValue)) {\n        return parseDuration(value);\n      }\n\n      return parsedValue;\n    },\n\n    /**\n     * Specifies the Segment duration, in units of the value of the @timescale.\n     *\n     * @param {string} value\n     *        value of attribute as a string\n     * @return {number}\n     *         The parsed duration\n     */\n    d: function d(value) {\n      return parseInt(value, 10);\n    },\n\n    /**\n     * Specifies the MPD start time, in @timescale units, the first Segment in the series\n     * starts relative to the beginning of the Period\n     *\n     * @param {string} value\n     *        value of attribute as a string\n     * @return {number}\n     *         The parsed time\n     */\n    t: function t(value) {\n      return parseInt(value, 10);\n    },\n\n    /**\n     * Specifies the repeat count of the number of following contiguous Segments with the\n     * same duration expressed by the value of @d\n     *\n     * @param {string} value\n     *        value of attribute as a string\n     * @return {number}\n     *         The parsed number\n     */\n    r: function r(value) {\n      return parseInt(value, 10);\n    },\n\n    /**\n     * Default parser for all other attributes. Acts as a no-op and just returns the value\n     * as a string\n     *\n     * @param {string} value\n     *        value of attribute as a string\n     * @return {string}\n     *         Unparsed value\n     */\n    DEFAULT: function DEFAULT(value) {\n      return value;\n    }\n  };\n  /**\n   * Gets all the attributes and values of the provided node, parses attributes with known\n   * types, and returns an object with attribute names mapped to values.\n   *\n   * @param {Node} el\n   *        The node to parse attributes from\n   * @return {Object}\n   *         Object with all attributes of el parsed\n   */\n\n  var parseAttributes$1 = function parseAttributes(el) {\n    if (!(el && el.attributes)) {\n      return {};\n    }\n\n    return from(el.attributes).reduce(function (a, e) {\n      var parseFn = parsers[e.name] || parsers.DEFAULT;\n      a[e.name] = parseFn(e.value);\n      return a;\n    }, {});\n  };\n\n  function decodeB64ToUint8Array(b64Text) {\n    var decodedString = window$1.atob(b64Text);\n    var array = new Uint8Array(decodedString.length);\n\n    for (var i = 0; i < decodedString.length; i++) {\n      array[i] = decodedString.charCodeAt(i);\n    }\n\n    return array;\n  }\n\n  var keySystemsMap = {\n    'urn:uuid:1077efec-c0b2-4d02-ace3-3c1e52e2fb4b': 'org.w3.clearkey',\n    'urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed': 'com.widevine.alpha',\n    'urn:uuid:9a04f079-9840-4286-ab92-e65be0885f95': 'com.microsoft.playready',\n    'urn:uuid:f239e769-efa3-4850-9c16-a903c6932efb': 'com.adobe.primetime'\n  };\n  /**\n   * Builds a list of urls that is the product of the reference urls and BaseURL values\n   *\n   * @param {string[]} referenceUrls\n   *        List of reference urls to resolve to\n   * @param {Node[]} baseUrlElements\n   *        List of BaseURL nodes from the mpd\n   * @return {string[]}\n   *         List of resolved urls\n   */\n\n  var buildBaseUrls = function buildBaseUrls(referenceUrls, baseUrlElements) {\n    if (!baseUrlElements.length) {\n      return referenceUrls;\n    }\n\n    return flatten(referenceUrls.map(function (reference) {\n      return baseUrlElements.map(function (baseUrlElement) {\n        return resolveUrl(reference, getContent(baseUrlElement));\n      });\n    }));\n  };\n  /**\n   * Contains all Segment information for its containing AdaptationSet\n   *\n   * @typedef {Object} SegmentInformation\n   * @property {Object|undefined} template\n   *           Contains the attributes for the SegmentTemplate node\n   * @property {Object[]|undefined} timeline\n   *           Contains a list of atrributes for each S node within the SegmentTimeline node\n   * @property {Object|undefined} list\n   *           Contains the attributes for the SegmentList node\n   * @property {Object|undefined} base\n   *           Contains the attributes for the SegmentBase node\n   */\n\n  /**\n   * Returns all available Segment information contained within the AdaptationSet node\n   *\n   * @param {Node} adaptationSet\n   *        The AdaptationSet node to get Segment information from\n   * @return {SegmentInformation}\n   *         The Segment information contained within the provided AdaptationSet\n   */\n\n\n  var getSegmentInformation = function getSegmentInformation(adaptationSet) {\n    var segmentTemplate = findChildren(adaptationSet, 'SegmentTemplate')[0];\n    var segmentList = findChildren(adaptationSet, 'SegmentList')[0];\n    var segmentUrls = segmentList && findChildren(segmentList, 'SegmentURL').map(function (s) {\n      return merge({\n        tag: 'SegmentURL'\n      }, parseAttributes$1(s));\n    });\n    var segmentBase = findChildren(adaptationSet, 'SegmentBase')[0];\n    var segmentTimelineParentNode = segmentList || segmentTemplate;\n    var segmentTimeline = segmentTimelineParentNode && findChildren(segmentTimelineParentNode, 'SegmentTimeline')[0];\n    var segmentInitializationParentNode = segmentList || segmentBase || segmentTemplate;\n    var segmentInitialization = segmentInitializationParentNode && findChildren(segmentInitializationParentNode, 'Initialization')[0]; // SegmentTemplate is handled slightly differently, since it can have both\n    // @initialization and an <Initialization> node.  @initialization can be templated,\n    // while the node can have a url and range specified.  If the <SegmentTemplate> has\n    // both @initialization and an <Initialization> subelement we opt to override with\n    // the node, as this interaction is not defined in the spec.\n\n    var template = segmentTemplate && parseAttributes$1(segmentTemplate);\n\n    if (template && segmentInitialization) {\n      template.initialization = segmentInitialization && parseAttributes$1(segmentInitialization);\n    } else if (template && template.initialization) {\n      // If it is @initialization we convert it to an object since this is the format that\n      // later functions will rely on for the initialization segment.  This is only valid\n      // for <SegmentTemplate>\n      template.initialization = {\n        sourceURL: template.initialization\n      };\n    }\n\n    var segmentInfo = {\n      template: template,\n      timeline: segmentTimeline && findChildren(segmentTimeline, 'S').map(function (s) {\n        return parseAttributes$1(s);\n      }),\n      list: segmentList && merge(parseAttributes$1(segmentList), {\n        segmentUrls: segmentUrls,\n        initialization: parseAttributes$1(segmentInitialization)\n      }),\n      base: segmentBase && merge(parseAttributes$1(segmentBase), {\n        initialization: parseAttributes$1(segmentInitialization)\n      })\n    };\n    Object.keys(segmentInfo).forEach(function (key) {\n      if (!segmentInfo[key]) {\n        delete segmentInfo[key];\n      }\n    });\n    return segmentInfo;\n  };\n  /**\n   * Contains Segment information and attributes needed to construct a Playlist object\n   * from a Representation\n   *\n   * @typedef {Object} RepresentationInformation\n   * @property {SegmentInformation} segmentInfo\n   *           Segment information for this Representation\n   * @property {Object} attributes\n   *           Inherited attributes for this Representation\n   */\n\n  /**\n   * Maps a Representation node to an object containing Segment information and attributes\n   *\n   * @name inheritBaseUrlsCallback\n   * @function\n   * @param {Node} representation\n   *        Representation node from the mpd\n   * @return {RepresentationInformation}\n   *         Representation information needed to construct a Playlist object\n   */\n\n  /**\n   * Returns a callback for Array.prototype.map for mapping Representation nodes to\n   * Segment information and attributes using inherited BaseURL nodes.\n   *\n   * @param {Object} adaptationSetAttributes\n   *        Contains attributes inherited by the AdaptationSet\n   * @param {string[]} adaptationSetBaseUrls\n   *        Contains list of resolved base urls inherited by the AdaptationSet\n   * @param {SegmentInformation} adaptationSetSegmentInfo\n   *        Contains Segment information for the AdaptationSet\n   * @return {inheritBaseUrlsCallback}\n   *         Callback map function\n   */\n\n\n  var inheritBaseUrls = function inheritBaseUrls(adaptationSetAttributes, adaptationSetBaseUrls, adaptationSetSegmentInfo) {\n    return function (representation) {\n      var repBaseUrlElements = findChildren(representation, 'BaseURL');\n      var repBaseUrls = buildBaseUrls(adaptationSetBaseUrls, repBaseUrlElements);\n      var attributes = merge(adaptationSetAttributes, parseAttributes$1(representation));\n      var representationSegmentInfo = getSegmentInformation(representation);\n      return repBaseUrls.map(function (baseUrl) {\n        return {\n          segmentInfo: merge(adaptationSetSegmentInfo, representationSegmentInfo),\n          attributes: merge(attributes, {\n            baseUrl: baseUrl\n          })\n        };\n      });\n    };\n  };\n  /**\n   * Tranforms a series of content protection nodes to\n   * an object containing pssh data by key system\n   *\n   * @param {Node[]} contentProtectionNodes\n   *        Content protection nodes\n   * @return {Object}\n   *        Object containing pssh data by key system\n   */\n\n\n  var generateKeySystemInformation = function generateKeySystemInformation(contentProtectionNodes) {\n    return contentProtectionNodes.reduce(function (acc, node) {\n      var attributes = parseAttributes$1(node);\n      var keySystem = keySystemsMap[attributes.schemeIdUri];\n\n      if (keySystem) {\n        acc[keySystem] = {\n          attributes: attributes\n        };\n        var psshNode = findChildren(node, 'cenc:pssh')[0];\n\n        if (psshNode) {\n          var pssh = getContent(psshNode);\n          var psshBuffer = pssh && decodeB64ToUint8Array(pssh);\n          acc[keySystem].pssh = psshBuffer;\n        }\n      }\n\n      return acc;\n    }, {});\n  };\n  /**\n   * Maps an AdaptationSet node to a list of Representation information objects\n   *\n   * @name toRepresentationsCallback\n   * @function\n   * @param {Node} adaptationSet\n   *        AdaptationSet node from the mpd\n   * @return {RepresentationInformation[]}\n   *         List of objects containing Representaion information\n   */\n\n  /**\n   * Returns a callback for Array.prototype.map for mapping AdaptationSet nodes to a list of\n   * Representation information objects\n   *\n   * @param {Object} periodAttributes\n   *        Contains attributes inherited by the Period\n   * @param {string[]} periodBaseUrls\n   *        Contains list of resolved base urls inherited by the Period\n   * @param {string[]} periodSegmentInfo\n   *        Contains Segment Information at the period level\n   * @return {toRepresentationsCallback}\n   *         Callback map function\n   */\n\n\n  var toRepresentations = function toRepresentations(periodAttributes, periodBaseUrls, periodSegmentInfo) {\n    return function (adaptationSet) {\n      var adaptationSetAttributes = parseAttributes$1(adaptationSet);\n      var adaptationSetBaseUrls = buildBaseUrls(periodBaseUrls, findChildren(adaptationSet, 'BaseURL'));\n      var role = findChildren(adaptationSet, 'Role')[0];\n      var roleAttributes = {\n        role: parseAttributes$1(role)\n      };\n      var attrs = merge(periodAttributes, adaptationSetAttributes, roleAttributes);\n      var contentProtection = generateKeySystemInformation(findChildren(adaptationSet, 'ContentProtection'));\n\n      if (Object.keys(contentProtection).length) {\n        attrs = merge(attrs, {\n          contentProtection: contentProtection\n        });\n      }\n\n      var segmentInfo = getSegmentInformation(adaptationSet);\n      var representations = findChildren(adaptationSet, 'Representation');\n      var adaptationSetSegmentInfo = merge(periodSegmentInfo, segmentInfo);\n      return flatten(representations.map(inheritBaseUrls(attrs, adaptationSetBaseUrls, adaptationSetSegmentInfo)));\n    };\n  };\n  /**\n   * Maps an Period node to a list of Representation inforamtion objects for all\n   * AdaptationSet nodes contained within the Period\n   *\n   * @name toAdaptationSetsCallback\n   * @function\n   * @param {Node} period\n   *        Period node from the mpd\n   * @param {number} periodIndex\n   *        Index of the Period within the mpd\n   * @return {RepresentationInformation[]}\n   *         List of objects containing Representaion information\n   */\n\n  /**\n   * Returns a callback for Array.prototype.map for mapping Period nodes to a list of\n   * Representation information objects\n   *\n   * @param {Object} mpdAttributes\n   *        Contains attributes inherited by the mpd\n   * @param {string[]} mpdBaseUrls\n   *        Contains list of resolved base urls inherited by the mpd\n   * @return {toAdaptationSetsCallback}\n   *         Callback map function\n   */\n\n\n  var toAdaptationSets = function toAdaptationSets(mpdAttributes, mpdBaseUrls) {\n    return function (period, index) {\n      var periodBaseUrls = buildBaseUrls(mpdBaseUrls, findChildren(period, 'BaseURL'));\n      var periodAtt = parseAttributes$1(period);\n      var parsedPeriodId = parseInt(periodAtt.id, 10); // fallback to mapping index if Period@id is not a number\n\n      var periodIndex = window$1.isNaN(parsedPeriodId) ? index : parsedPeriodId;\n      var periodAttributes = merge(mpdAttributes, {\n        periodIndex: periodIndex\n      });\n      var adaptationSets = findChildren(period, 'AdaptationSet');\n      var periodSegmentInfo = getSegmentInformation(period);\n      return flatten(adaptationSets.map(toRepresentations(periodAttributes, periodBaseUrls, periodSegmentInfo)));\n    };\n  };\n  /**\n   * Traverses the mpd xml tree to generate a list of Representation information objects\n   * that have inherited attributes from parent nodes\n   *\n   * @param {Node} mpd\n   *        The root node of the mpd\n   * @param {Object} options\n   *        Available options for inheritAttributes\n   * @param {string} options.manifestUri\n   *        The uri source of the mpd\n   * @param {number} options.NOW\n   *        Current time per DASH IOP.  Default is current time in ms since epoch\n   * @param {number} options.clientOffset\n   *        Client time difference from NOW (in milliseconds)\n   * @return {RepresentationInformation[]}\n   *         List of objects containing Representation information\n   */\n\n\n  var inheritAttributes = function inheritAttributes(mpd, options) {\n    if (options === void 0) {\n      options = {};\n    }\n\n    var _options = options,\n        _options$manifestUri = _options.manifestUri,\n        manifestUri = _options$manifestUri === void 0 ? '' : _options$manifestUri,\n        _options$NOW = _options.NOW,\n        NOW = _options$NOW === void 0 ? Date.now() : _options$NOW,\n        _options$clientOffset = _options.clientOffset,\n        clientOffset = _options$clientOffset === void 0 ? 0 : _options$clientOffset;\n    var periods = findChildren(mpd, 'Period');\n\n    if (!periods.length) {\n      throw new Error(errors.INVALID_NUMBER_OF_PERIOD);\n    }\n\n    var mpdAttributes = parseAttributes$1(mpd);\n    var mpdBaseUrls = buildBaseUrls([manifestUri], findChildren(mpd, 'BaseURL'));\n    mpdAttributes.sourceDuration = mpdAttributes.mediaPresentationDuration || 0;\n    mpdAttributes.NOW = NOW;\n    mpdAttributes.clientOffset = clientOffset;\n    return flatten(periods.map(toAdaptationSets(mpdAttributes, mpdBaseUrls)));\n  };\n\n  var stringToMpdXml = function stringToMpdXml(manifestString) {\n    if (manifestString === '') {\n      throw new Error(errors.DASH_EMPTY_MANIFEST);\n    }\n\n    var parser = new window$1.DOMParser();\n    var xml = parser.parseFromString(manifestString, 'application/xml');\n    var mpd = xml && xml.documentElement.tagName === 'MPD' ? xml.documentElement : null;\n\n    if (!mpd || mpd && mpd.getElementsByTagName('parsererror').length > 0) {\n      throw new Error(errors.DASH_INVALID_XML);\n    }\n\n    return mpd;\n  };\n  /**\n   * Parses the manifest for a UTCTiming node, returning the nodes attributes if found\n   *\n   * @param {string} mpd\n   *        XML string of the MPD manifest\n   * @return {Object|null}\n   *         Attributes of UTCTiming node specified in the manifest. Null if none found\n   */\n\n\n  var parseUTCTimingScheme = function parseUTCTimingScheme(mpd) {\n    var UTCTimingNode = findChildren(mpd, 'UTCTiming')[0];\n\n    if (!UTCTimingNode) {\n      return null;\n    }\n\n    var attributes = parseAttributes$1(UTCTimingNode);\n\n    switch (attributes.schemeIdUri) {\n      case 'urn:mpeg:dash:utc:http-head:2014':\n      case 'urn:mpeg:dash:utc:http-head:2012':\n        attributes.method = 'HEAD';\n        break;\n\n      case 'urn:mpeg:dash:utc:http-xsdate:2014':\n      case 'urn:mpeg:dash:utc:http-iso:2014':\n      case 'urn:mpeg:dash:utc:http-xsdate:2012':\n      case 'urn:mpeg:dash:utc:http-iso:2012':\n        attributes.method = 'GET';\n        break;\n\n      case 'urn:mpeg:dash:utc:direct:2014':\n      case 'urn:mpeg:dash:utc:direct:2012':\n        attributes.method = 'DIRECT';\n        attributes.value = Date.parse(attributes.value);\n        break;\n\n      case 'urn:mpeg:dash:utc:http-ntp:2014':\n      case 'urn:mpeg:dash:utc:ntp:2014':\n      case 'urn:mpeg:dash:utc:sntp:2014':\n      default:\n        throw new Error(errors.UNSUPPORTED_UTC_TIMING_SCHEME);\n    }\n\n    return attributes;\n  };\n\n  var parse = function parse(manifestString, options) {\n    return toM3u8(toPlaylists(inheritAttributes(stringToMpdXml(manifestString), options)));\n  };\n  /**\n   * Parses the manifest for a UTCTiming node, returning the nodes attributes if found\n   *\n   * @param {string} manifestString\n   *        XML string of the MPD manifest\n   * @return {Object|null}\n   *         Attributes of UTCTiming node specified in the manifest. Null if none found\n   */\n\n\n  var parseUTCTiming = function parseUTCTiming(manifestString) {\n    return parseUTCTimingScheme(stringToMpdXml(manifestString));\n  };\n\n  var toUnsigned = function toUnsigned(value) {\n    return value >>> 0;\n  };\n\n  var bin = {\n    toUnsigned: toUnsigned\n  };\n\n  var toUnsigned$1 = bin.toUnsigned;\n\n  var _findBox, parseType, timescale, startTime, getVideoTrackIds; // Find the data for a box specified by its path\n\n\n  _findBox = function findBox(data, path) {\n    var results = [],\n        i,\n        size,\n        type,\n        end,\n        subresults;\n\n    if (!path.length) {\n      // short-circuit the search for empty paths\n      return null;\n    }\n\n    for (i = 0; i < data.byteLength;) {\n      size = toUnsigned$1(data[i] << 24 | data[i + 1] << 16 | data[i + 2] << 8 | data[i + 3]);\n      type = parseType(data.subarray(i + 4, i + 8));\n      end = size > 1 ? i + size : data.byteLength;\n\n      if (type === path[0]) {\n        if (path.length === 1) {\n          // this is the end of the path and we've found the box we were\n          // looking for\n          results.push(data.subarray(i + 8, end));\n        } else {\n          // recursively search for the next box along the path\n          subresults = _findBox(data.subarray(i + 8, end), path.slice(1));\n\n          if (subresults.length) {\n            results = results.concat(subresults);\n          }\n        }\n      }\n\n      i = end;\n    } // we've finished searching all of data\n\n\n    return results;\n  };\n  /**\n   * Returns the string representation of an ASCII encoded four byte buffer.\n   * @param buffer {Uint8Array} a four-byte buffer to translate\n   * @return {string} the corresponding string\n   */\n\n\n  parseType = function parseType(buffer) {\n    var result = '';\n    result += String.fromCharCode(buffer[0]);\n    result += String.fromCharCode(buffer[1]);\n    result += String.fromCharCode(buffer[2]);\n    result += String.fromCharCode(buffer[3]);\n    return result;\n  };\n  /**\n   * Parses an MP4 initialization segment and extracts the timescale\n   * values for any declared tracks. Timescale values indicate the\n   * number of clock ticks per second to assume for time-based values\n   * elsewhere in the MP4.\n   *\n   * To determine the start time of an MP4, you need two pieces of\n   * information: the timescale unit and the earliest base media decode\n   * time. Multiple timescales can be specified within an MP4 but the\n   * base media decode time is always expressed in the timescale from\n   * the media header box for the track:\n   * ```\n   * moov > trak > mdia > mdhd.timescale\n   * ```\n   * @param init {Uint8Array} the bytes of the init segment\n   * @return {object} a hash of track ids to timescale values or null if\n   * the init segment is malformed.\n   */\n\n\n  timescale = function timescale(init) {\n    var result = {},\n        traks = _findBox(init, ['moov', 'trak']); // mdhd timescale\n\n\n    return traks.reduce(function (result, trak) {\n      var tkhd, version, index, id, mdhd;\n      tkhd = _findBox(trak, ['tkhd'])[0];\n\n      if (!tkhd) {\n        return null;\n      }\n\n      version = tkhd[0];\n      index = version === 0 ? 12 : 20;\n      id = toUnsigned$1(tkhd[index] << 24 | tkhd[index + 1] << 16 | tkhd[index + 2] << 8 | tkhd[index + 3]);\n      mdhd = _findBox(trak, ['mdia', 'mdhd'])[0];\n\n      if (!mdhd) {\n        return null;\n      }\n\n      version = mdhd[0];\n      index = version === 0 ? 12 : 20;\n      result[id] = toUnsigned$1(mdhd[index] << 24 | mdhd[index + 1] << 16 | mdhd[index + 2] << 8 | mdhd[index + 3]);\n      return result;\n    }, result);\n  };\n  /**\n   * Determine the base media decode start time, in seconds, for an MP4\n   * fragment. If multiple fragments are specified, the earliest time is\n   * returned.\n   *\n   * The base media decode time can be parsed from track fragment\n   * metadata:\n   * ```\n   * moof > traf > tfdt.baseMediaDecodeTime\n   * ```\n   * It requires the timescale value from the mdhd to interpret.\n   *\n   * @param timescale {object} a hash of track ids to timescale values.\n   * @return {number} the earliest base media decode start time for the\n   * fragment, in seconds\n   */\n\n\n  startTime = function startTime(timescale, fragment) {\n    var trafs, baseTimes, result; // we need info from two childrend of each track fragment box\n\n    trafs = _findBox(fragment, ['moof', 'traf']); // determine the start times for each track\n\n    baseTimes = [].concat.apply([], trafs.map(function (traf) {\n      return _findBox(traf, ['tfhd']).map(function (tfhd) {\n        var id, scale, baseTime; // get the track id from the tfhd\n\n        id = toUnsigned$1(tfhd[4] << 24 | tfhd[5] << 16 | tfhd[6] << 8 | tfhd[7]); // assume a 90kHz clock if no timescale was specified\n\n        scale = timescale[id] || 90e3; // get the base media decode time from the tfdt\n\n        baseTime = _findBox(traf, ['tfdt']).map(function (tfdt) {\n          var version, result;\n          version = tfdt[0];\n          result = toUnsigned$1(tfdt[4] << 24 | tfdt[5] << 16 | tfdt[6] << 8 | tfdt[7]);\n\n          if (version === 1) {\n            result *= Math.pow(2, 32);\n            result += toUnsigned$1(tfdt[8] << 24 | tfdt[9] << 16 | tfdt[10] << 8 | tfdt[11]);\n          }\n\n          return result;\n        })[0];\n        baseTime = baseTime || Infinity; // convert base time to seconds\n\n        return baseTime / scale;\n      });\n    })); // return the minimum\n\n    result = Math.min.apply(null, baseTimes);\n    return isFinite(result) ? result : 0;\n  };\n  /**\n    * Find the trackIds of the video tracks in this source.\n    * Found by parsing the Handler Reference and Track Header Boxes:\n    *   moov > trak > mdia > hdlr\n    *   moov > trak > tkhd\n    *\n    * @param {Uint8Array} init - The bytes of the init segment for this source\n    * @return {Number[]} A list of trackIds\n    *\n    * @see ISO-BMFF-12/2015, Section 8.4.3\n   **/\n\n\n  getVideoTrackIds = function getVideoTrackIds(init) {\n    var traks = _findBox(init, ['moov', 'trak']);\n\n    var videoTrackIds = [];\n    traks.forEach(function (trak) {\n      var hdlrs = _findBox(trak, ['mdia', 'hdlr']);\n\n      var tkhds = _findBox(trak, ['tkhd']);\n\n      hdlrs.forEach(function (hdlr, index) {\n        var handlerType = parseType(hdlr.subarray(8, 12));\n        var tkhd = tkhds[index];\n        var view;\n        var version;\n        var trackId;\n\n        if (handlerType === 'vide') {\n          view = new DataView(tkhd.buffer, tkhd.byteOffset, tkhd.byteLength);\n          version = view.getUint8(0);\n          trackId = version === 0 ? view.getUint32(12) : view.getUint32(20);\n          videoTrackIds.push(trackId);\n        }\n      });\n    });\n    return videoTrackIds;\n  };\n\n  var probe = {\n    findBox: _findBox,\n    parseType: parseType,\n    timescale: timescale,\n    startTime: startTime,\n    videoTrackIds: getVideoTrackIds\n  };\n\n  /**\n   * mux.js\n   *\n   * Copyright (c) 2015 Brightcove\n   * All rights reserved.\n   *\n   * Functions that generate fragmented MP4s suitable for use with Media\n   * Source Extensions.\n   */\n\n  var UINT32_MAX = Math.pow(2, 32) - 1;\n  var box, dinf, esds, ftyp, mdat, mfhd, minf, moof, moov, mvex, mvhd, trak, tkhd, mdia, mdhd, hdlr, sdtp, stbl, stsd, traf, trex, trun, types, MAJOR_BRAND, MINOR_VERSION, AVC1_BRAND, VIDEO_HDLR, AUDIO_HDLR, HDLR_TYPES, VMHD, SMHD, DREF, STCO, STSC, STSZ, STTS; // pre-calculate constants\n\n  (function () {\n    var i;\n    types = {\n      avc1: [],\n      // codingname\n      avcC: [],\n      btrt: [],\n      dinf: [],\n      dref: [],\n      esds: [],\n      ftyp: [],\n      hdlr: [],\n      mdat: [],\n      mdhd: [],\n      mdia: [],\n      mfhd: [],\n      minf: [],\n      moof: [],\n      moov: [],\n      mp4a: [],\n      // codingname\n      mvex: [],\n      mvhd: [],\n      sdtp: [],\n      smhd: [],\n      stbl: [],\n      stco: [],\n      stsc: [],\n      stsd: [],\n      stsz: [],\n      stts: [],\n      styp: [],\n      tfdt: [],\n      tfhd: [],\n      traf: [],\n      trak: [],\n      trun: [],\n      trex: [],\n      tkhd: [],\n      vmhd: []\n    }; // In environments where Uint8Array is undefined (e.g., IE8), skip set up so that we\n    // don't throw an error\n\n    if (typeof Uint8Array === 'undefined') {\n      return;\n    }\n\n    for (i in types) {\n      if (types.hasOwnProperty(i)) {\n        types[i] = [i.charCodeAt(0), i.charCodeAt(1), i.charCodeAt(2), i.charCodeAt(3)];\n      }\n    }\n\n    MAJOR_BRAND = new Uint8Array(['i'.charCodeAt(0), 's'.charCodeAt(0), 'o'.charCodeAt(0), 'm'.charCodeAt(0)]);\n    AVC1_BRAND = new Uint8Array(['a'.charCodeAt(0), 'v'.charCodeAt(0), 'c'.charCodeAt(0), '1'.charCodeAt(0)]);\n    MINOR_VERSION = new Uint8Array([0, 0, 0, 1]);\n    VIDEO_HDLR = new Uint8Array([0x00, // version 0\n    0x00, 0x00, 0x00, // flags\n    0x00, 0x00, 0x00, 0x00, // pre_defined\n    0x76, 0x69, 0x64, 0x65, // handler_type: 'vide'\n    0x00, 0x00, 0x00, 0x00, // reserved\n    0x00, 0x00, 0x00, 0x00, // reserved\n    0x00, 0x00, 0x00, 0x00, // reserved\n    0x56, 0x69, 0x64, 0x65, 0x6f, 0x48, 0x61, 0x6e, 0x64, 0x6c, 0x65, 0x72, 0x00 // name: 'VideoHandler'\n    ]);\n    AUDIO_HDLR = new Uint8Array([0x00, // version 0\n    0x00, 0x00, 0x00, // flags\n    0x00, 0x00, 0x00, 0x00, // pre_defined\n    0x73, 0x6f, 0x75, 0x6e, // handler_type: 'soun'\n    0x00, 0x00, 0x00, 0x00, // reserved\n    0x00, 0x00, 0x00, 0x00, // reserved\n    0x00, 0x00, 0x00, 0x00, // reserved\n    0x53, 0x6f, 0x75, 0x6e, 0x64, 0x48, 0x61, 0x6e, 0x64, 0x6c, 0x65, 0x72, 0x00 // name: 'SoundHandler'\n    ]);\n    HDLR_TYPES = {\n      video: VIDEO_HDLR,\n      audio: AUDIO_HDLR\n    };\n    DREF = new Uint8Array([0x00, // version 0\n    0x00, 0x00, 0x00, // flags\n    0x00, 0x00, 0x00, 0x01, // entry_count\n    0x00, 0x00, 0x00, 0x0c, // entry_size\n    0x75, 0x72, 0x6c, 0x20, // 'url' type\n    0x00, // version 0\n    0x00, 0x00, 0x01 // entry_flags\n    ]);\n    SMHD = new Uint8Array([0x00, // version\n    0x00, 0x00, 0x00, // flags\n    0x00, 0x00, // balance, 0 means centered\n    0x00, 0x00 // reserved\n    ]);\n    STCO = new Uint8Array([0x00, // version\n    0x00, 0x00, 0x00, // flags\n    0x00, 0x00, 0x00, 0x00 // entry_count\n    ]);\n    STSC = STCO;\n    STSZ = new Uint8Array([0x00, // version\n    0x00, 0x00, 0x00, // flags\n    0x00, 0x00, 0x00, 0x00, // sample_size\n    0x00, 0x00, 0x00, 0x00 // sample_count\n    ]);\n    STTS = STCO;\n    VMHD = new Uint8Array([0x00, // version\n    0x00, 0x00, 0x01, // flags\n    0x00, 0x00, // graphicsmode\n    0x00, 0x00, 0x00, 0x00, 0x00, 0x00 // opcolor\n    ]);\n  })();\n\n  box = function box(type) {\n    var payload = [],\n        size = 0,\n        i,\n        result,\n        view;\n\n    for (i = 1; i < arguments.length; i++) {\n      payload.push(arguments[i]);\n    }\n\n    i = payload.length; // calculate the total size we need to allocate\n\n    while (i--) {\n      size += payload[i].byteLength;\n    }\n\n    result = new Uint8Array(size + 8);\n    view = new DataView(result.buffer, result.byteOffset, result.byteLength);\n    view.setUint32(0, result.byteLength);\n    result.set(type, 4); // copy the payload into the result\n\n    for (i = 0, size = 8; i < payload.length; i++) {\n      result.set(payload[i], size);\n      size += payload[i].byteLength;\n    }\n\n    return result;\n  };\n\n  dinf = function dinf() {\n    return box(types.dinf, box(types.dref, DREF));\n  };\n\n  esds = function esds(track) {\n    return box(types.esds, new Uint8Array([0x00, // version\n    0x00, 0x00, 0x00, // flags\n    // ES_Descriptor\n    0x03, // tag, ES_DescrTag\n    0x19, // length\n    0x00, 0x00, // ES_ID\n    0x00, // streamDependenceFlag, URL_flag, reserved, streamPriority\n    // DecoderConfigDescriptor\n    0x04, // tag, DecoderConfigDescrTag\n    0x11, // length\n    0x40, // object type\n    0x15, // streamType\n    0x00, 0x06, 0x00, // bufferSizeDB\n    0x00, 0x00, 0xda, 0xc0, // maxBitrate\n    0x00, 0x00, 0xda, 0xc0, // avgBitrate\n    // DecoderSpecificInfo\n    0x05, // tag, DecoderSpecificInfoTag\n    0x02, // length\n    // ISO/IEC 14496-3, AudioSpecificConfig\n    // for samplingFrequencyIndex see ISO/IEC 13818-7:2006, 8.1.3.2.2, Table 35\n    track.audioobjecttype << 3 | track.samplingfrequencyindex >>> 1, track.samplingfrequencyindex << 7 | track.channelcount << 3, 0x06, 0x01, 0x02 // GASpecificConfig\n    ]));\n  };\n\n  ftyp = function ftyp() {\n    return box(types.ftyp, MAJOR_BRAND, MINOR_VERSION, MAJOR_BRAND, AVC1_BRAND);\n  };\n\n  hdlr = function hdlr(type) {\n    return box(types.hdlr, HDLR_TYPES[type]);\n  };\n\n  mdat = function mdat(data) {\n    return box(types.mdat, data);\n  };\n\n  mdhd = function mdhd(track) {\n    var result = new Uint8Array([0x00, // version 0\n    0x00, 0x00, 0x00, // flags\n    0x00, 0x00, 0x00, 0x02, // creation_time\n    0x00, 0x00, 0x00, 0x03, // modification_time\n    0x00, 0x01, 0x5f, 0x90, // timescale, 90,000 \"ticks\" per second\n    track.duration >>> 24 & 0xFF, track.duration >>> 16 & 0xFF, track.duration >>> 8 & 0xFF, track.duration & 0xFF, // duration\n    0x55, 0xc4, // 'und' language (undetermined)\n    0x00, 0x00]); // Use the sample rate from the track metadata, when it is\n    // defined. The sample rate can be parsed out of an ADTS header, for\n    // instance.\n\n    if (track.samplerate) {\n      result[12] = track.samplerate >>> 24 & 0xFF;\n      result[13] = track.samplerate >>> 16 & 0xFF;\n      result[14] = track.samplerate >>> 8 & 0xFF;\n      result[15] = track.samplerate & 0xFF;\n    }\n\n    return box(types.mdhd, result);\n  };\n\n  mdia = function mdia(track) {\n    return box(types.mdia, mdhd(track), hdlr(track.type), minf(track));\n  };\n\n  mfhd = function mfhd(sequenceNumber) {\n    return box(types.mfhd, new Uint8Array([0x00, 0x00, 0x00, 0x00, // flags\n    (sequenceNumber & 0xFF000000) >> 24, (sequenceNumber & 0xFF0000) >> 16, (sequenceNumber & 0xFF00) >> 8, sequenceNumber & 0xFF // sequence_number\n    ]));\n  };\n\n  minf = function minf(track) {\n    return box(types.minf, track.type === 'video' ? box(types.vmhd, VMHD) : box(types.smhd, SMHD), dinf(), stbl(track));\n  };\n\n  moof = function moof(sequenceNumber, tracks) {\n    var trackFragments = [],\n        i = tracks.length; // build traf boxes for each track fragment\n\n    while (i--) {\n      trackFragments[i] = traf(tracks[i]);\n    }\n\n    return box.apply(null, [types.moof, mfhd(sequenceNumber)].concat(trackFragments));\n  };\n  /**\n   * Returns a movie box.\n   * @param tracks {array} the tracks associated with this movie\n   * @see ISO/IEC 14496-12:2012(E), section 8.2.1\n   */\n\n\n  moov = function moov(tracks) {\n    var i = tracks.length,\n        boxes = [];\n\n    while (i--) {\n      boxes[i] = trak(tracks[i]);\n    }\n\n    return box.apply(null, [types.moov, mvhd(0xffffffff)].concat(boxes).concat(mvex(tracks)));\n  };\n\n  mvex = function mvex(tracks) {\n    var i = tracks.length,\n        boxes = [];\n\n    while (i--) {\n      boxes[i] = trex(tracks[i]);\n    }\n\n    return box.apply(null, [types.mvex].concat(boxes));\n  };\n\n  mvhd = function mvhd(duration) {\n    var bytes = new Uint8Array([0x00, // version 0\n    0x00, 0x00, 0x00, // flags\n    0x00, 0x00, 0x00, 0x01, // creation_time\n    0x00, 0x00, 0x00, 0x02, // modification_time\n    0x00, 0x01, 0x5f, 0x90, // timescale, 90,000 \"ticks\" per second\n    (duration & 0xFF000000) >> 24, (duration & 0xFF0000) >> 16, (duration & 0xFF00) >> 8, duration & 0xFF, // duration\n    0x00, 0x01, 0x00, 0x00, // 1.0 rate\n    0x01, 0x00, // 1.0 volume\n    0x00, 0x00, // reserved\n    0x00, 0x00, 0x00, 0x00, // reserved\n    0x00, 0x00, 0x00, 0x00, // reserved\n    0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, // transformation: unity matrix\n    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // pre_defined\n    0xff, 0xff, 0xff, 0xff // next_track_ID\n    ]);\n    return box(types.mvhd, bytes);\n  };\n\n  sdtp = function sdtp(track) {\n    var samples = track.samples || [],\n        bytes = new Uint8Array(4 + samples.length),\n        flags,\n        i; // leave the full box header (4 bytes) all zero\n    // write the sample table\n\n    for (i = 0; i < samples.length; i++) {\n      flags = samples[i].flags;\n      bytes[i + 4] = flags.dependsOn << 4 | flags.isDependedOn << 2 | flags.hasRedundancy;\n    }\n\n    return box(types.sdtp, bytes);\n  };\n\n  stbl = function stbl(track) {\n    return box(types.stbl, stsd(track), box(types.stts, STTS), box(types.stsc, STSC), box(types.stsz, STSZ), box(types.stco, STCO));\n  };\n\n  (function () {\n    var videoSample, audioSample;\n\n    stsd = function stsd(track) {\n      return box(types.stsd, new Uint8Array([0x00, // version 0\n      0x00, 0x00, 0x00, // flags\n      0x00, 0x00, 0x00, 0x01]), track.type === 'video' ? videoSample(track) : audioSample(track));\n    };\n\n    videoSample = function videoSample(track) {\n      var sps = track.sps || [],\n          pps = track.pps || [],\n          sequenceParameterSets = [],\n          pictureParameterSets = [],\n          i; // assemble the SPSs\n\n      for (i = 0; i < sps.length; i++) {\n        sequenceParameterSets.push((sps[i].byteLength & 0xFF00) >>> 8);\n        sequenceParameterSets.push(sps[i].byteLength & 0xFF); // sequenceParameterSetLength\n\n        sequenceParameterSets = sequenceParameterSets.concat(Array.prototype.slice.call(sps[i])); // SPS\n      } // assemble the PPSs\n\n\n      for (i = 0; i < pps.length; i++) {\n        pictureParameterSets.push((pps[i].byteLength & 0xFF00) >>> 8);\n        pictureParameterSets.push(pps[i].byteLength & 0xFF);\n        pictureParameterSets = pictureParameterSets.concat(Array.prototype.slice.call(pps[i]));\n      }\n\n      return box(types.avc1, new Uint8Array([0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // reserved\n      0x00, 0x01, // data_reference_index\n      0x00, 0x00, // pre_defined\n      0x00, 0x00, // reserved\n      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // pre_defined\n      (track.width & 0xff00) >> 8, track.width & 0xff, // width\n      (track.height & 0xff00) >> 8, track.height & 0xff, // height\n      0x00, 0x48, 0x00, 0x00, // horizresolution\n      0x00, 0x48, 0x00, 0x00, // vertresolution\n      0x00, 0x00, 0x00, 0x00, // reserved\n      0x00, 0x01, // frame_count\n      0x13, 0x76, 0x69, 0x64, 0x65, 0x6f, 0x6a, 0x73, 0x2d, 0x63, 0x6f, 0x6e, 0x74, 0x72, 0x69, 0x62, 0x2d, 0x68, 0x6c, 0x73, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // compressorname\n      0x00, 0x18, // depth = 24\n      0x11, 0x11 // pre_defined = -1\n      ]), box(types.avcC, new Uint8Array([0x01, // configurationVersion\n      track.profileIdc, // AVCProfileIndication\n      track.profileCompatibility, // profile_compatibility\n      track.levelIdc, // AVCLevelIndication\n      0xff // lengthSizeMinusOne, hard-coded to 4 bytes\n      ].concat([sps.length // numOfSequenceParameterSets\n      ]).concat(sequenceParameterSets).concat([pps.length // numOfPictureParameterSets\n      ]).concat(pictureParameterSets))), // \"PPS\"\n      box(types.btrt, new Uint8Array([0x00, 0x1c, 0x9c, 0x80, // bufferSizeDB\n      0x00, 0x2d, 0xc6, 0xc0, // maxBitrate\n      0x00, 0x2d, 0xc6, 0xc0])) // avgBitrate\n      );\n    };\n\n    audioSample = function audioSample(track) {\n      return box(types.mp4a, new Uint8Array([// SampleEntry, ISO/IEC 14496-12\n      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // reserved\n      0x00, 0x01, // data_reference_index\n      // AudioSampleEntry, ISO/IEC 14496-12\n      0x00, 0x00, 0x00, 0x00, // reserved\n      0x00, 0x00, 0x00, 0x00, // reserved\n      (track.channelcount & 0xff00) >> 8, track.channelcount & 0xff, // channelcount\n      (track.samplesize & 0xff00) >> 8, track.samplesize & 0xff, // samplesize\n      0x00, 0x00, // pre_defined\n      0x00, 0x00, // reserved\n      (track.samplerate & 0xff00) >> 8, track.samplerate & 0xff, 0x00, 0x00 // samplerate, 16.16\n      // MP4AudioSampleEntry, ISO/IEC 14496-14\n      ]), esds(track));\n    };\n  })();\n\n  tkhd = function tkhd(track) {\n    var result = new Uint8Array([0x00, // version 0\n    0x00, 0x00, 0x07, // flags\n    0x00, 0x00, 0x00, 0x00, // creation_time\n    0x00, 0x00, 0x00, 0x00, // modification_time\n    (track.id & 0xFF000000) >> 24, (track.id & 0xFF0000) >> 16, (track.id & 0xFF00) >> 8, track.id & 0xFF, // track_ID\n    0x00, 0x00, 0x00, 0x00, // reserved\n    (track.duration & 0xFF000000) >> 24, (track.duration & 0xFF0000) >> 16, (track.duration & 0xFF00) >> 8, track.duration & 0xFF, // duration\n    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // reserved\n    0x00, 0x00, // layer\n    0x00, 0x00, // alternate_group\n    0x01, 0x00, // non-audio track volume\n    0x00, 0x00, // reserved\n    0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, // transformation: unity matrix\n    (track.width & 0xFF00) >> 8, track.width & 0xFF, 0x00, 0x00, // width\n    (track.height & 0xFF00) >> 8, track.height & 0xFF, 0x00, 0x00 // height\n    ]);\n    return box(types.tkhd, result);\n  };\n  /**\n   * Generate a track fragment (traf) box. A traf box collects metadata\n   * about tracks in a movie fragment (moof) box.\n   */\n\n\n  traf = function traf(track) {\n    var trackFragmentHeader, trackFragmentDecodeTime, trackFragmentRun, sampleDependencyTable, dataOffset, upperWordBaseMediaDecodeTime, lowerWordBaseMediaDecodeTime;\n    trackFragmentHeader = box(types.tfhd, new Uint8Array([0x00, // version 0\n    0x00, 0x00, 0x3a, // flags\n    (track.id & 0xFF000000) >> 24, (track.id & 0xFF0000) >> 16, (track.id & 0xFF00) >> 8, track.id & 0xFF, // track_ID\n    0x00, 0x00, 0x00, 0x01, // sample_description_index\n    0x00, 0x00, 0x00, 0x00, // default_sample_duration\n    0x00, 0x00, 0x00, 0x00, // default_sample_size\n    0x00, 0x00, 0x00, 0x00 // default_sample_flags\n    ]));\n    upperWordBaseMediaDecodeTime = Math.floor(track.baseMediaDecodeTime / (UINT32_MAX + 1));\n    lowerWordBaseMediaDecodeTime = Math.floor(track.baseMediaDecodeTime % (UINT32_MAX + 1));\n    trackFragmentDecodeTime = box(types.tfdt, new Uint8Array([0x01, // version 1\n    0x00, 0x00, 0x00, // flags\n    // baseMediaDecodeTime\n    upperWordBaseMediaDecodeTime >>> 24 & 0xFF, upperWordBaseMediaDecodeTime >>> 16 & 0xFF, upperWordBaseMediaDecodeTime >>> 8 & 0xFF, upperWordBaseMediaDecodeTime & 0xFF, lowerWordBaseMediaDecodeTime >>> 24 & 0xFF, lowerWordBaseMediaDecodeTime >>> 16 & 0xFF, lowerWordBaseMediaDecodeTime >>> 8 & 0xFF, lowerWordBaseMediaDecodeTime & 0xFF])); // the data offset specifies the number of bytes from the start of\n    // the containing moof to the first payload byte of the associated\n    // mdat\n\n    dataOffset = 32 + // tfhd\n    20 + // tfdt\n    8 + // traf header\n    16 + // mfhd\n    8 + // moof header\n    8; // mdat header\n    // audio tracks require less metadata\n\n    if (track.type === 'audio') {\n      trackFragmentRun = trun(track, dataOffset);\n      return box(types.traf, trackFragmentHeader, trackFragmentDecodeTime, trackFragmentRun);\n    } // video tracks should contain an independent and disposable samples\n    // box (sdtp)\n    // generate one and adjust offsets to match\n\n\n    sampleDependencyTable = sdtp(track);\n    trackFragmentRun = trun(track, sampleDependencyTable.length + dataOffset);\n    return box(types.traf, trackFragmentHeader, trackFragmentDecodeTime, trackFragmentRun, sampleDependencyTable);\n  };\n  /**\n   * Generate a track box.\n   * @param track {object} a track definition\n   * @return {Uint8Array} the track box\n   */\n\n\n  trak = function trak(track) {\n    track.duration = track.duration || 0xffffffff;\n    return box(types.trak, tkhd(track), mdia(track));\n  };\n\n  trex = function trex(track) {\n    var result = new Uint8Array([0x00, // version 0\n    0x00, 0x00, 0x00, // flags\n    (track.id & 0xFF000000) >> 24, (track.id & 0xFF0000) >> 16, (track.id & 0xFF00) >> 8, track.id & 0xFF, // track_ID\n    0x00, 0x00, 0x00, 0x01, // default_sample_description_index\n    0x00, 0x00, 0x00, 0x00, // default_sample_duration\n    0x00, 0x00, 0x00, 0x00, // default_sample_size\n    0x00, 0x01, 0x00, 0x01 // default_sample_flags\n    ]); // the last two bytes of default_sample_flags is the sample\n    // degradation priority, a hint about the importance of this sample\n    // relative to others. Lower the degradation priority for all sample\n    // types other than video.\n\n    if (track.type !== 'video') {\n      result[result.length - 1] = 0x00;\n    }\n\n    return box(types.trex, result);\n  };\n\n  (function () {\n    var audioTrun, videoTrun, trunHeader; // This method assumes all samples are uniform. That is, if a\n    // duration is present for the first sample, it will be present for\n    // all subsequent samples.\n    // see ISO/IEC 14496-12:2012, Section 8.8.8.1\n\n    trunHeader = function trunHeader(samples, offset) {\n      var durationPresent = 0,\n          sizePresent = 0,\n          flagsPresent = 0,\n          compositionTimeOffset = 0; // trun flag constants\n\n      if (samples.length) {\n        if (samples[0].duration !== undefined) {\n          durationPresent = 0x1;\n        }\n\n        if (samples[0].size !== undefined) {\n          sizePresent = 0x2;\n        }\n\n        if (samples[0].flags !== undefined) {\n          flagsPresent = 0x4;\n        }\n\n        if (samples[0].compositionTimeOffset !== undefined) {\n          compositionTimeOffset = 0x8;\n        }\n      }\n\n      return [0x00, // version 0\n      0x00, durationPresent | sizePresent | flagsPresent | compositionTimeOffset, 0x01, // flags\n      (samples.length & 0xFF000000) >>> 24, (samples.length & 0xFF0000) >>> 16, (samples.length & 0xFF00) >>> 8, samples.length & 0xFF, // sample_count\n      (offset & 0xFF000000) >>> 24, (offset & 0xFF0000) >>> 16, (offset & 0xFF00) >>> 8, offset & 0xFF // data_offset\n      ];\n    };\n\n    videoTrun = function videoTrun(track, offset) {\n      var bytes, samples, sample, i;\n      samples = track.samples || [];\n      offset += 8 + 12 + 16 * samples.length;\n      bytes = trunHeader(samples, offset);\n\n      for (i = 0; i < samples.length; i++) {\n        sample = samples[i];\n        bytes = bytes.concat([(sample.duration & 0xFF000000) >>> 24, (sample.duration & 0xFF0000) >>> 16, (sample.duration & 0xFF00) >>> 8, sample.duration & 0xFF, // sample_duration\n        (sample.size & 0xFF000000) >>> 24, (sample.size & 0xFF0000) >>> 16, (sample.size & 0xFF00) >>> 8, sample.size & 0xFF, // sample_size\n        sample.flags.isLeading << 2 | sample.flags.dependsOn, sample.flags.isDependedOn << 6 | sample.flags.hasRedundancy << 4 | sample.flags.paddingValue << 1 | sample.flags.isNonSyncSample, sample.flags.degradationPriority & 0xF0 << 8, sample.flags.degradationPriority & 0x0F, // sample_flags\n        (sample.compositionTimeOffset & 0xFF000000) >>> 24, (sample.compositionTimeOffset & 0xFF0000) >>> 16, (sample.compositionTimeOffset & 0xFF00) >>> 8, sample.compositionTimeOffset & 0xFF // sample_composition_time_offset\n        ]);\n      }\n\n      return box(types.trun, new Uint8Array(bytes));\n    };\n\n    audioTrun = function audioTrun(track, offset) {\n      var bytes, samples, sample, i;\n      samples = track.samples || [];\n      offset += 8 + 12 + 8 * samples.length;\n      bytes = trunHeader(samples, offset);\n\n      for (i = 0; i < samples.length; i++) {\n        sample = samples[i];\n        bytes = bytes.concat([(sample.duration & 0xFF000000) >>> 24, (sample.duration & 0xFF0000) >>> 16, (sample.duration & 0xFF00) >>> 8, sample.duration & 0xFF, // sample_duration\n        (sample.size & 0xFF000000) >>> 24, (sample.size & 0xFF0000) >>> 16, (sample.size & 0xFF00) >>> 8, sample.size & 0xFF]); // sample_size\n      }\n\n      return box(types.trun, new Uint8Array(bytes));\n    };\n\n    trun = function trun(track, offset) {\n      if (track.type === 'audio') {\n        return audioTrun(track, offset);\n      }\n\n      return videoTrun(track, offset);\n    };\n  })();\n\n  var mp4Generator = {\n    ftyp: ftyp,\n    mdat: mdat,\n    moof: moof,\n    moov: moov,\n    initSegment: function initSegment(tracks) {\n      var fileType = ftyp(),\n          movie = moov(tracks),\n          result;\n      result = new Uint8Array(fileType.byteLength + movie.byteLength);\n      result.set(fileType);\n      result.set(movie, fileType.byteLength);\n      return result;\n    }\n  };\n\n  /**\n   * mux.js\n   *\n   * Copyright (c) 2014 Brightcove\n   * All rights reserved.\n   *\n   * A lightweight readable stream implemention that handles event dispatching.\n   * Objects that inherit from streams should call init in their constructors.\n   */\n\n  var Stream$1 = function Stream() {\n    this.init = function () {\n      var listeners = {};\n      /**\n       * Add a listener for a specified event type.\n       * @param type {string} the event name\n       * @param listener {function} the callback to be invoked when an event of\n       * the specified type occurs\n       */\n\n      this.on = function (type, listener) {\n        if (!listeners[type]) {\n          listeners[type] = [];\n        }\n\n        listeners[type] = listeners[type].concat(listener);\n      };\n      /**\n       * Remove a listener for a specified event type.\n       * @param type {string} the event name\n       * @param listener {function} a function previously registered for this\n       * type of event through `on`\n       */\n\n\n      this.off = function (type, listener) {\n        var index;\n\n        if (!listeners[type]) {\n          return false;\n        }\n\n        index = listeners[type].indexOf(listener);\n        listeners[type] = listeners[type].slice();\n        listeners[type].splice(index, 1);\n        return index > -1;\n      };\n      /**\n       * Trigger an event of the specified type on this stream. Any additional\n       * arguments to this function are passed as parameters to event listeners.\n       * @param type {string} the event name\n       */\n\n\n      this.trigger = function (type) {\n        var callbacks, i, length, args;\n        callbacks = listeners[type];\n\n        if (!callbacks) {\n          return;\n        } // Slicing the arguments on every invocation of this method\n        // can add a significant amount of overhead. Avoid the\n        // intermediate object creation for the common case of a\n        // single callback argument\n\n\n        if (arguments.length === 2) {\n          length = callbacks.length;\n\n          for (i = 0; i < length; ++i) {\n            callbacks[i].call(this, arguments[1]);\n          }\n        } else {\n          args = [];\n          i = arguments.length;\n\n          for (i = 1; i < arguments.length; ++i) {\n            args.push(arguments[i]);\n          }\n\n          length = callbacks.length;\n\n          for (i = 0; i < length; ++i) {\n            callbacks[i].apply(this, args);\n          }\n        }\n      };\n      /**\n       * Destroys the stream and cleans up.\n       */\n\n\n      this.dispose = function () {\n        listeners = {};\n      };\n    };\n  };\n  /**\n   * Forwards all `data` events on this stream to the destination stream. The\n   * destination stream should provide a method `push` to receive the data\n   * events as they arrive.\n   * @param destination {stream} the stream that will receive all `data` events\n   * @param autoFlush {boolean} if false, we will not call `flush` on the destination\n   *                            when the current stream emits a 'done' event\n   * @see http://nodejs.org/api/stream.html#stream_readable_pipe_destination_options\n   */\n\n\n  Stream$1.prototype.pipe = function (destination) {\n    this.on('data', function (data) {\n      destination.push(data);\n    });\n    this.on('done', function (flushSource) {\n      destination.flush(flushSource);\n    });\n    return destination;\n  }; // Default stream functions that are expected to be overridden to perform\n  // actual work. These are provided by the prototype as a sort of no-op\n  // implementation so that we don't have to check for their existence in the\n  // `pipe` function above.\n\n\n  Stream$1.prototype.push = function (data) {\n    this.trigger('data', data);\n  };\n\n  Stream$1.prototype.flush = function (flushSource) {\n    this.trigger('done', flushSource);\n  };\n\n  var stream = Stream$1;\n\n  // Convert an array of nal units into an array of frames with each frame being\n  // composed of the nal units that make up that frame\n  // Also keep track of cummulative data about the frame from the nal units such\n  // as the frame duration, starting pts, etc.\n  var groupNalsIntoFrames = function groupNalsIntoFrames(nalUnits) {\n    var i,\n        currentNal,\n        currentFrame = [],\n        frames = [];\n    currentFrame.byteLength = 0;\n\n    for (i = 0; i < nalUnits.length; i++) {\n      currentNal = nalUnits[i]; // Split on 'aud'-type nal units\n\n      if (currentNal.nalUnitType === 'access_unit_delimiter_rbsp') {\n        // Since the very first nal unit is expected to be an AUD\n        // only push to the frames array when currentFrame is not empty\n        if (currentFrame.length) {\n          currentFrame.duration = currentNal.dts - currentFrame.dts;\n          frames.push(currentFrame);\n        }\n\n        currentFrame = [currentNal];\n        currentFrame.byteLength = currentNal.data.byteLength;\n        currentFrame.pts = currentNal.pts;\n        currentFrame.dts = currentNal.dts;\n      } else {\n        // Specifically flag key frames for ease of use later\n        if (currentNal.nalUnitType === 'slice_layer_without_partitioning_rbsp_idr') {\n          currentFrame.keyFrame = true;\n        }\n\n        currentFrame.duration = currentNal.dts - currentFrame.dts;\n        currentFrame.byteLength += currentNal.data.byteLength;\n        currentFrame.push(currentNal);\n      }\n    } // For the last frame, use the duration of the previous frame if we\n    // have nothing better to go on\n\n\n    if (frames.length && (!currentFrame.duration || currentFrame.duration <= 0)) {\n      currentFrame.duration = frames[frames.length - 1].duration;\n    } // Push the final frame\n\n\n    frames.push(currentFrame);\n    return frames;\n  }; // Convert an array of frames into an array of Gop with each Gop being composed\n  // of the frames that make up that Gop\n  // Also keep track of cummulative data about the Gop from the frames such as the\n  // Gop duration, starting pts, etc.\n\n\n  var groupFramesIntoGops = function groupFramesIntoGops(frames) {\n    var i,\n        currentFrame,\n        currentGop = [],\n        gops = []; // We must pre-set some of the values on the Gop since we\n    // keep running totals of these values\n\n    currentGop.byteLength = 0;\n    currentGop.nalCount = 0;\n    currentGop.duration = 0;\n    currentGop.pts = frames[0].pts;\n    currentGop.dts = frames[0].dts; // store some metadata about all the Gops\n\n    gops.byteLength = 0;\n    gops.nalCount = 0;\n    gops.duration = 0;\n    gops.pts = frames[0].pts;\n    gops.dts = frames[0].dts;\n\n    for (i = 0; i < frames.length; i++) {\n      currentFrame = frames[i];\n\n      if (currentFrame.keyFrame) {\n        // Since the very first frame is expected to be an keyframe\n        // only push to the gops array when currentGop is not empty\n        if (currentGop.length) {\n          gops.push(currentGop);\n          gops.byteLength += currentGop.byteLength;\n          gops.nalCount += currentGop.nalCount;\n          gops.duration += currentGop.duration;\n        }\n\n        currentGop = [currentFrame];\n        currentGop.nalCount = currentFrame.length;\n        currentGop.byteLength = currentFrame.byteLength;\n        currentGop.pts = currentFrame.pts;\n        currentGop.dts = currentFrame.dts;\n        currentGop.duration = currentFrame.duration;\n      } else {\n        currentGop.duration += currentFrame.duration;\n        currentGop.nalCount += currentFrame.length;\n        currentGop.byteLength += currentFrame.byteLength;\n        currentGop.push(currentFrame);\n      }\n    }\n\n    if (gops.length && currentGop.duration <= 0) {\n      currentGop.duration = gops[gops.length - 1].duration;\n    }\n\n    gops.byteLength += currentGop.byteLength;\n    gops.nalCount += currentGop.nalCount;\n    gops.duration += currentGop.duration; // push the final Gop\n\n    gops.push(currentGop);\n    return gops;\n  };\n  /*\n   * Search for the first keyframe in the GOPs and throw away all frames\n   * until that keyframe. Then extend the duration of the pulled keyframe\n   * and pull the PTS and DTS of the keyframe so that it covers the time\n   * range of the frames that were disposed.\n   *\n   * @param {Array} gops video GOPs\n   * @returns {Array} modified video GOPs\n   */\n\n\n  var extendFirstKeyFrame = function extendFirstKeyFrame(gops) {\n    var currentGop;\n\n    if (!gops[0][0].keyFrame && gops.length > 1) {\n      // Remove the first GOP\n      currentGop = gops.shift();\n      gops.byteLength -= currentGop.byteLength;\n      gops.nalCount -= currentGop.nalCount; // Extend the first frame of what is now the\n      // first gop to cover the time period of the\n      // frames we just removed\n\n      gops[0][0].dts = currentGop.dts;\n      gops[0][0].pts = currentGop.pts;\n      gops[0][0].duration += currentGop.duration;\n    }\n\n    return gops;\n  };\n  /**\n   * Default sample object\n   * see ISO/IEC 14496-12:2012, section 8.6.4.3\n   */\n\n\n  var createDefaultSample = function createDefaultSample() {\n    return {\n      size: 0,\n      flags: {\n        isLeading: 0,\n        dependsOn: 1,\n        isDependedOn: 0,\n        hasRedundancy: 0,\n        degradationPriority: 0,\n        isNonSyncSample: 1\n      }\n    };\n  };\n  /*\n   * Collates information from a video frame into an object for eventual\n   * entry into an MP4 sample table.\n   *\n   * @param {Object} frame the video frame\n   * @param {Number} dataOffset the byte offset to position the sample\n   * @return {Object} object containing sample table info for a frame\n   */\n\n\n  var sampleForFrame = function sampleForFrame(frame, dataOffset) {\n    var sample = createDefaultSample();\n    sample.dataOffset = dataOffset;\n    sample.compositionTimeOffset = frame.pts - frame.dts;\n    sample.duration = frame.duration;\n    sample.size = 4 * frame.length; // Space for nal unit size\n\n    sample.size += frame.byteLength;\n\n    if (frame.keyFrame) {\n      sample.flags.dependsOn = 2;\n      sample.flags.isNonSyncSample = 0;\n    }\n\n    return sample;\n  }; // generate the track's sample table from an array of gops\n\n\n  var generateSampleTable = function generateSampleTable(gops, baseDataOffset) {\n    var h,\n        i,\n        sample,\n        currentGop,\n        currentFrame,\n        dataOffset = baseDataOffset || 0,\n        samples = [];\n\n    for (h = 0; h < gops.length; h++) {\n      currentGop = gops[h];\n\n      for (i = 0; i < currentGop.length; i++) {\n        currentFrame = currentGop[i];\n        sample = sampleForFrame(currentFrame, dataOffset);\n        dataOffset += sample.size;\n        samples.push(sample);\n      }\n    }\n\n    return samples;\n  }; // generate the track's raw mdat data from an array of gops\n\n\n  var concatenateNalData = function concatenateNalData(gops) {\n    var h,\n        i,\n        j,\n        currentGop,\n        currentFrame,\n        currentNal,\n        dataOffset = 0,\n        nalsByteLength = gops.byteLength,\n        numberOfNals = gops.nalCount,\n        totalByteLength = nalsByteLength + 4 * numberOfNals,\n        data = new Uint8Array(totalByteLength),\n        view = new DataView(data.buffer); // For each Gop..\n\n    for (h = 0; h < gops.length; h++) {\n      currentGop = gops[h]; // For each Frame..\n\n      for (i = 0; i < currentGop.length; i++) {\n        currentFrame = currentGop[i]; // For each NAL..\n\n        for (j = 0; j < currentFrame.length; j++) {\n          currentNal = currentFrame[j];\n          view.setUint32(dataOffset, currentNal.data.byteLength);\n          dataOffset += 4;\n          data.set(currentNal.data, dataOffset);\n          dataOffset += currentNal.data.byteLength;\n        }\n      }\n    }\n\n    return data;\n  };\n\n  var frameUtils = {\n    groupNalsIntoFrames: groupNalsIntoFrames,\n    groupFramesIntoGops: groupFramesIntoGops,\n    extendFirstKeyFrame: extendFirstKeyFrame,\n    generateSampleTable: generateSampleTable,\n    concatenateNalData: concatenateNalData\n  };\n\n  var highPrefix = [33, 16, 5, 32, 164, 27];\n  var lowPrefix = [33, 65, 108, 84, 1, 2, 4, 8, 168, 2, 4, 8, 17, 191, 252];\n\n  var zeroFill = function zeroFill(count) {\n    var a = [];\n\n    while (count--) {\n      a.push(0);\n    }\n\n    return a;\n  };\n\n  var makeTable = function makeTable(metaTable) {\n    return Object.keys(metaTable).reduce(function (obj, key) {\n      obj[key] = new Uint8Array(metaTable[key].reduce(function (arr, part) {\n        return arr.concat(part);\n      }, []));\n      return obj;\n    }, {});\n  }; // Frames-of-silence to use for filling in missing AAC frames\n\n\n  var coneOfSilence = {\n    96000: [highPrefix, [227, 64], zeroFill(154), [56]],\n    88200: [highPrefix, [231], zeroFill(170), [56]],\n    64000: [highPrefix, [248, 192], zeroFill(240), [56]],\n    48000: [highPrefix, [255, 192], zeroFill(268), [55, 148, 128], zeroFill(54), [112]],\n    44100: [highPrefix, [255, 192], zeroFill(268), [55, 163, 128], zeroFill(84), [112]],\n    32000: [highPrefix, [255, 192], zeroFill(268), [55, 234], zeroFill(226), [112]],\n    24000: [highPrefix, [255, 192], zeroFill(268), [55, 255, 128], zeroFill(268), [111, 112], zeroFill(126), [224]],\n    16000: [highPrefix, [255, 192], zeroFill(268), [55, 255, 128], zeroFill(268), [111, 255], zeroFill(269), [223, 108], zeroFill(195), [1, 192]],\n    12000: [lowPrefix, zeroFill(268), [3, 127, 248], zeroFill(268), [6, 255, 240], zeroFill(268), [13, 255, 224], zeroFill(268), [27, 253, 128], zeroFill(259), [56]],\n    11025: [lowPrefix, zeroFill(268), [3, 127, 248], zeroFill(268), [6, 255, 240], zeroFill(268), [13, 255, 224], zeroFill(268), [27, 255, 192], zeroFill(268), [55, 175, 128], zeroFill(108), [112]],\n    8000: [lowPrefix, zeroFill(268), [3, 121, 16], zeroFill(47), [7]]\n  };\n  var silence = makeTable(coneOfSilence);\n\n  var ONE_SECOND_IN_TS = 90000,\n      // 90kHz clock\n  secondsToVideoTs,\n      secondsToAudioTs,\n      videoTsToSeconds,\n      audioTsToSeconds,\n      audioTsToVideoTs,\n      videoTsToAudioTs;\n\n  secondsToVideoTs = function secondsToVideoTs(seconds) {\n    return seconds * ONE_SECOND_IN_TS;\n  };\n\n  secondsToAudioTs = function secondsToAudioTs(seconds, sampleRate) {\n    return seconds * sampleRate;\n  };\n\n  videoTsToSeconds = function videoTsToSeconds(timestamp) {\n    return timestamp / ONE_SECOND_IN_TS;\n  };\n\n  audioTsToSeconds = function audioTsToSeconds(timestamp, sampleRate) {\n    return timestamp / sampleRate;\n  };\n\n  audioTsToVideoTs = function audioTsToVideoTs(timestamp, sampleRate) {\n    return secondsToVideoTs(audioTsToSeconds(timestamp, sampleRate));\n  };\n\n  videoTsToAudioTs = function videoTsToAudioTs(timestamp, sampleRate) {\n    return secondsToAudioTs(videoTsToSeconds(timestamp), sampleRate);\n  };\n\n  var clock = {\n    secondsToVideoTs: secondsToVideoTs,\n    secondsToAudioTs: secondsToAudioTs,\n    videoTsToSeconds: videoTsToSeconds,\n    audioTsToSeconds: audioTsToSeconds,\n    audioTsToVideoTs: audioTsToVideoTs,\n    videoTsToAudioTs: videoTsToAudioTs\n  };\n\n  var ONE_SECOND_IN_TS$1 = 90000; // 90kHz clock\n\n  /**\n   * Sum the `byteLength` properties of the data in each AAC frame\n   */\n\n  var sumFrameByteLengths = function sumFrameByteLengths(array) {\n    var i,\n        currentObj,\n        sum = 0; // sum the byteLength's all each nal unit in the frame\n\n    for (i = 0; i < array.length; i++) {\n      currentObj = array[i];\n      sum += currentObj.data.byteLength;\n    }\n\n    return sum;\n  }; // Possibly pad (prefix) the audio track with silence if appending this track\n  // would lead to the introduction of a gap in the audio buffer\n\n\n  var prefixWithSilence = function prefixWithSilence(track, frames, audioAppendStartTs, videoBaseMediaDecodeTime) {\n    var baseMediaDecodeTimeTs,\n        frameDuration = 0,\n        audioGapDuration = 0,\n        audioFillFrameCount = 0,\n        audioFillDuration = 0,\n        silentFrame,\n        i;\n\n    if (!frames.length) {\n      return;\n    }\n\n    baseMediaDecodeTimeTs = clock.audioTsToVideoTs(track.baseMediaDecodeTime, track.samplerate); // determine frame clock duration based on sample rate, round up to avoid overfills\n\n    frameDuration = Math.ceil(ONE_SECOND_IN_TS$1 / (track.samplerate / 1024));\n\n    if (audioAppendStartTs && videoBaseMediaDecodeTime) {\n      // insert the shortest possible amount (audio gap or audio to video gap)\n      audioGapDuration = baseMediaDecodeTimeTs - Math.max(audioAppendStartTs, videoBaseMediaDecodeTime); // number of full frames in the audio gap\n\n      audioFillFrameCount = Math.floor(audioGapDuration / frameDuration);\n      audioFillDuration = audioFillFrameCount * frameDuration;\n    } // don't attempt to fill gaps smaller than a single frame or larger\n    // than a half second\n\n\n    if (audioFillFrameCount < 1 || audioFillDuration > ONE_SECOND_IN_TS$1 / 2) {\n      return;\n    }\n\n    silentFrame = silence[track.samplerate];\n\n    if (!silentFrame) {\n      // we don't have a silent frame pregenerated for the sample rate, so use a frame\n      // from the content instead\n      silentFrame = frames[0].data;\n    }\n\n    for (i = 0; i < audioFillFrameCount; i++) {\n      frames.splice(i, 0, {\n        data: silentFrame\n      });\n    }\n\n    track.baseMediaDecodeTime -= Math.floor(clock.videoTsToAudioTs(audioFillDuration, track.samplerate));\n  }; // If the audio segment extends before the earliest allowed dts\n  // value, remove AAC frames until starts at or after the earliest\n  // allowed DTS so that we don't end up with a negative baseMedia-\n  // DecodeTime for the audio track\n\n\n  var trimAdtsFramesByEarliestDts = function trimAdtsFramesByEarliestDts(adtsFrames, track, earliestAllowedDts) {\n    if (track.minSegmentDts >= earliestAllowedDts) {\n      return adtsFrames;\n    } // We will need to recalculate the earliest segment Dts\n\n\n    track.minSegmentDts = Infinity;\n    return adtsFrames.filter(function (currentFrame) {\n      // If this is an allowed frame, keep it and record it's Dts\n      if (currentFrame.dts >= earliestAllowedDts) {\n        track.minSegmentDts = Math.min(track.minSegmentDts, currentFrame.dts);\n        track.minSegmentPts = track.minSegmentDts;\n        return true;\n      } // Otherwise, discard it\n\n\n      return false;\n    });\n  }; // generate the track's raw mdat data from an array of frames\n\n\n  var generateSampleTable$1 = function generateSampleTable(frames) {\n    var i,\n        currentFrame,\n        samples = [];\n\n    for (i = 0; i < frames.length; i++) {\n      currentFrame = frames[i];\n      samples.push({\n        size: currentFrame.data.byteLength,\n        duration: 1024 // For AAC audio, all samples contain 1024 samples\n\n      });\n    }\n\n    return samples;\n  }; // generate the track's sample table from an array of frames\n\n\n  var concatenateFrameData = function concatenateFrameData(frames) {\n    var i,\n        currentFrame,\n        dataOffset = 0,\n        data = new Uint8Array(sumFrameByteLengths(frames));\n\n    for (i = 0; i < frames.length; i++) {\n      currentFrame = frames[i];\n      data.set(currentFrame.data, dataOffset);\n      dataOffset += currentFrame.data.byteLength;\n    }\n\n    return data;\n  };\n\n  var audioFrameUtils = {\n    prefixWithSilence: prefixWithSilence,\n    trimAdtsFramesByEarliestDts: trimAdtsFramesByEarliestDts,\n    generateSampleTable: generateSampleTable$1,\n    concatenateFrameData: concatenateFrameData\n  };\n\n  var ONE_SECOND_IN_TS$2 = 90000; // 90kHz clock\n\n  /**\n   * Store information about the start and end of the track and the\n   * duration for each frame/sample we process in order to calculate\n   * the baseMediaDecodeTime\n   */\n\n  var collectDtsInfo = function collectDtsInfo(track, data) {\n    if (typeof data.pts === 'number') {\n      if (track.timelineStartInfo.pts === undefined) {\n        track.timelineStartInfo.pts = data.pts;\n      }\n\n      if (track.minSegmentPts === undefined) {\n        track.minSegmentPts = data.pts;\n      } else {\n        track.minSegmentPts = Math.min(track.minSegmentPts, data.pts);\n      }\n\n      if (track.maxSegmentPts === undefined) {\n        track.maxSegmentPts = data.pts;\n      } else {\n        track.maxSegmentPts = Math.max(track.maxSegmentPts, data.pts);\n      }\n    }\n\n    if (typeof data.dts === 'number') {\n      if (track.timelineStartInfo.dts === undefined) {\n        track.timelineStartInfo.dts = data.dts;\n      }\n\n      if (track.minSegmentDts === undefined) {\n        track.minSegmentDts = data.dts;\n      } else {\n        track.minSegmentDts = Math.min(track.minSegmentDts, data.dts);\n      }\n\n      if (track.maxSegmentDts === undefined) {\n        track.maxSegmentDts = data.dts;\n      } else {\n        track.maxSegmentDts = Math.max(track.maxSegmentDts, data.dts);\n      }\n    }\n  };\n  /**\n   * Clear values used to calculate the baseMediaDecodeTime between\n   * tracks\n   */\n\n\n  var clearDtsInfo = function clearDtsInfo(track) {\n    delete track.minSegmentDts;\n    delete track.maxSegmentDts;\n    delete track.minSegmentPts;\n    delete track.maxSegmentPts;\n  };\n  /**\n   * Calculate the track's baseMediaDecodeTime based on the earliest\n   * DTS the transmuxer has ever seen and the minimum DTS for the\n   * current track\n   * @param track {object} track metadata configuration\n   * @param keepOriginalTimestamps {boolean} If true, keep the timestamps\n   *        in the source; false to adjust the first segment to start at 0.\n   */\n\n\n  var calculateTrackBaseMediaDecodeTime = function calculateTrackBaseMediaDecodeTime(track, keepOriginalTimestamps) {\n    var baseMediaDecodeTime,\n        scale,\n        minSegmentDts = track.minSegmentDts; // Optionally adjust the time so the first segment starts at zero.\n\n    if (!keepOriginalTimestamps) {\n      minSegmentDts -= track.timelineStartInfo.dts;\n    } // track.timelineStartInfo.baseMediaDecodeTime is the location, in time, where\n    // we want the start of the first segment to be placed\n\n\n    baseMediaDecodeTime = track.timelineStartInfo.baseMediaDecodeTime; // Add to that the distance this segment is from the very first\n\n    baseMediaDecodeTime += minSegmentDts; // baseMediaDecodeTime must not become negative\n\n    baseMediaDecodeTime = Math.max(0, baseMediaDecodeTime);\n\n    if (track.type === 'audio') {\n      // Audio has a different clock equal to the sampling_rate so we need to\n      // scale the PTS values into the clock rate of the track\n      scale = track.samplerate / ONE_SECOND_IN_TS$2;\n      baseMediaDecodeTime *= scale;\n      baseMediaDecodeTime = Math.floor(baseMediaDecodeTime);\n    }\n\n    return baseMediaDecodeTime;\n  };\n\n  var trackDecodeInfo = {\n    clearDtsInfo: clearDtsInfo,\n    calculateTrackBaseMediaDecodeTime: calculateTrackBaseMediaDecodeTime,\n    collectDtsInfo: collectDtsInfo\n  };\n\n  /**\n   * mux.js\n   *\n   * Copyright (c) 2015 Brightcove\n   * All rights reserved.\n   *\n   * Reads in-band caption information from a video elementary\n   * stream. Captions must follow the CEA-708 standard for injection\n   * into an MPEG-2 transport streams.\n   * @see https://en.wikipedia.org/wiki/CEA-708\n   * @see https://www.gpo.gov/fdsys/pkg/CFR-2007-title47-vol1/pdf/CFR-2007-title47-vol1-sec15-119.pdf\n   */\n  // payload type field to indicate how they are to be\n  // interpreted. CEAS-708 caption content is always transmitted with\n  // payload type 0x04.\n\n  var USER_DATA_REGISTERED_ITU_T_T35 = 4,\n      RBSP_TRAILING_BITS = 128;\n  /**\n    * Parse a supplemental enhancement information (SEI) NAL unit.\n    * Stops parsing once a message of type ITU T T35 has been found.\n    *\n    * @param bytes {Uint8Array} the bytes of a SEI NAL unit\n    * @return {object} the parsed SEI payload\n    * @see Rec. ITU-T H.264, 7.3.2.3.1\n    */\n\n  var parseSei = function parseSei(bytes) {\n    var i = 0,\n        result = {\n      payloadType: -1,\n      payloadSize: 0\n    },\n        payloadType = 0,\n        payloadSize = 0; // go through the sei_rbsp parsing each each individual sei_message\n\n    while (i < bytes.byteLength) {\n      // stop once we have hit the end of the sei_rbsp\n      if (bytes[i] === RBSP_TRAILING_BITS) {\n        break;\n      } // Parse payload type\n\n\n      while (bytes[i] === 0xFF) {\n        payloadType += 255;\n        i++;\n      }\n\n      payloadType += bytes[i++]; // Parse payload size\n\n      while (bytes[i] === 0xFF) {\n        payloadSize += 255;\n        i++;\n      }\n\n      payloadSize += bytes[i++]; // this sei_message is a 608/708 caption so save it and break\n      // there can only ever be one caption message in a frame's sei\n\n      if (!result.payload && payloadType === USER_DATA_REGISTERED_ITU_T_T35) {\n        result.payloadType = payloadType;\n        result.payloadSize = payloadSize;\n        result.payload = bytes.subarray(i, i + payloadSize);\n        break;\n      } // skip the payload and parse the next message\n\n\n      i += payloadSize;\n      payloadType = 0;\n      payloadSize = 0;\n    }\n\n    return result;\n  }; // see ANSI/SCTE 128-1 (2013), section 8.1\n\n\n  var parseUserData = function parseUserData(sei) {\n    // itu_t_t35_contry_code must be 181 (United States) for\n    // captions\n    if (sei.payload[0] !== 181) {\n      return null;\n    } // itu_t_t35_provider_code should be 49 (ATSC) for captions\n\n\n    if ((sei.payload[1] << 8 | sei.payload[2]) !== 49) {\n      return null;\n    } // the user_identifier should be \"GA94\" to indicate ATSC1 data\n\n\n    if (String.fromCharCode(sei.payload[3], sei.payload[4], sei.payload[5], sei.payload[6]) !== 'GA94') {\n      return null;\n    } // finally, user_data_type_code should be 0x03 for caption data\n\n\n    if (sei.payload[7] !== 0x03) {\n      return null;\n    } // return the user_data_type_structure and strip the trailing\n    // marker bits\n\n\n    return sei.payload.subarray(8, sei.payload.length - 1);\n  }; // see CEA-708-D, section 4.4\n\n\n  var parseCaptionPackets = function parseCaptionPackets(pts, userData) {\n    var results = [],\n        i,\n        count,\n        offset,\n        data; // if this is just filler, return immediately\n\n    if (!(userData[0] & 0x40)) {\n      return results;\n    } // parse out the cc_data_1 and cc_data_2 fields\n\n\n    count = userData[0] & 0x1f;\n\n    for (i = 0; i < count; i++) {\n      offset = i * 3;\n      data = {\n        type: userData[offset + 2] & 0x03,\n        pts: pts\n      }; // capture cc data when cc_valid is 1\n\n      if (userData[offset + 2] & 0x04) {\n        data.ccData = userData[offset + 3] << 8 | userData[offset + 4];\n        results.push(data);\n      }\n    }\n\n    return results;\n  };\n\n  var discardEmulationPreventionBytes = function discardEmulationPreventionBytes(data) {\n    var length = data.byteLength,\n        emulationPreventionBytesPositions = [],\n        i = 1,\n        newLength,\n        newData; // Find all `Emulation Prevention Bytes`\n\n    while (i < length - 2) {\n      if (data[i] === 0 && data[i + 1] === 0 && data[i + 2] === 0x03) {\n        emulationPreventionBytesPositions.push(i + 2);\n        i += 2;\n      } else {\n        i++;\n      }\n    } // If no Emulation Prevention Bytes were found just return the original\n    // array\n\n\n    if (emulationPreventionBytesPositions.length === 0) {\n      return data;\n    } // Create a new array to hold the NAL unit data\n\n\n    newLength = length - emulationPreventionBytesPositions.length;\n    newData = new Uint8Array(newLength);\n    var sourceIndex = 0;\n\n    for (i = 0; i < newLength; sourceIndex++, i++) {\n      if (sourceIndex === emulationPreventionBytesPositions[0]) {\n        // Skip this byte\n        sourceIndex++; // Remove this position index\n\n        emulationPreventionBytesPositions.shift();\n      }\n\n      newData[i] = data[sourceIndex];\n    }\n\n    return newData;\n  }; // exports\n\n\n  var captionPacketParser = {\n    parseSei: parseSei,\n    parseUserData: parseUserData,\n    parseCaptionPackets: parseCaptionPackets,\n    discardEmulationPreventionBytes: discardEmulationPreventionBytes,\n    USER_DATA_REGISTERED_ITU_T_T35: USER_DATA_REGISTERED_ITU_T_T35\n  };\n\n  // Link To Transport\n  // -----------------\n\n\n  var CaptionStream = function CaptionStream() {\n    CaptionStream.prototype.init.call(this);\n    this.captionPackets_ = [];\n    this.ccStreams_ = [new Cea608Stream(0, 0), // eslint-disable-line no-use-before-define\n    new Cea608Stream(0, 1), // eslint-disable-line no-use-before-define\n    new Cea608Stream(1, 0), // eslint-disable-line no-use-before-define\n    new Cea608Stream(1, 1) // eslint-disable-line no-use-before-define\n    ];\n    this.reset(); // forward data and done events from CCs to this CaptionStream\n\n    this.ccStreams_.forEach(function (cc) {\n      cc.on('data', this.trigger.bind(this, 'data'));\n      cc.on('done', this.trigger.bind(this, 'done'));\n    }, this);\n  };\n\n  CaptionStream.prototype = new stream();\n\n  CaptionStream.prototype.push = function (event) {\n    var sei, userData, newCaptionPackets; // only examine SEI NALs\n\n    if (event.nalUnitType !== 'sei_rbsp') {\n      return;\n    } // parse the sei\n\n\n    sei = captionPacketParser.parseSei(event.escapedRBSP); // ignore everything but user_data_registered_itu_t_t35\n\n    if (sei.payloadType !== captionPacketParser.USER_DATA_REGISTERED_ITU_T_T35) {\n      return;\n    } // parse out the user data payload\n\n\n    userData = captionPacketParser.parseUserData(sei); // ignore unrecognized userData\n\n    if (!userData) {\n      return;\n    } // Sometimes, the same segment # will be downloaded twice. To stop the\n    // caption data from being processed twice, we track the latest dts we've\n    // received and ignore everything with a dts before that. However, since\n    // data for a specific dts can be split across packets on either side of\n    // a segment boundary, we need to make sure we *don't* ignore the packets\n    // from the *next* segment that have dts === this.latestDts_. By constantly\n    // tracking the number of packets received with dts === this.latestDts_, we\n    // know how many should be ignored once we start receiving duplicates.\n\n\n    if (event.dts < this.latestDts_) {\n      // We've started getting older data, so set the flag.\n      this.ignoreNextEqualDts_ = true;\n      return;\n    } else if (event.dts === this.latestDts_ && this.ignoreNextEqualDts_) {\n      this.numSameDts_--;\n\n      if (!this.numSameDts_) {\n        // We've received the last duplicate packet, time to start processing again\n        this.ignoreNextEqualDts_ = false;\n      }\n\n      return;\n    } // parse out CC data packets and save them for later\n\n\n    newCaptionPackets = captionPacketParser.parseCaptionPackets(event.pts, userData);\n    this.captionPackets_ = this.captionPackets_.concat(newCaptionPackets);\n\n    if (this.latestDts_ !== event.dts) {\n      this.numSameDts_ = 0;\n    }\n\n    this.numSameDts_++;\n    this.latestDts_ = event.dts;\n  };\n\n  CaptionStream.prototype.flush = function () {\n    // make sure we actually parsed captions before proceeding\n    if (!this.captionPackets_.length) {\n      this.ccStreams_.forEach(function (cc) {\n        cc.flush();\n      }, this);\n      return;\n    } // In Chrome, the Array#sort function is not stable so add a\n    // presortIndex that we can use to ensure we get a stable-sort\n\n\n    this.captionPackets_.forEach(function (elem, idx) {\n      elem.presortIndex = idx;\n    }); // sort caption byte-pairs based on their PTS values\n\n    this.captionPackets_.sort(function (a, b) {\n      if (a.pts === b.pts) {\n        return a.presortIndex - b.presortIndex;\n      }\n\n      return a.pts - b.pts;\n    });\n    this.captionPackets_.forEach(function (packet) {\n      if (packet.type < 2) {\n        // Dispatch packet to the right Cea608Stream\n        this.dispatchCea608Packet(packet);\n      } // this is where an 'else' would go for a dispatching packets\n      // to a theoretical Cea708Stream that handles SERVICEn data\n\n    }, this);\n    this.captionPackets_.length = 0;\n    this.ccStreams_.forEach(function (cc) {\n      cc.flush();\n    }, this);\n    return;\n  };\n\n  CaptionStream.prototype.reset = function () {\n    this.latestDts_ = null;\n    this.ignoreNextEqualDts_ = false;\n    this.numSameDts_ = 0;\n    this.activeCea608Channel_ = [null, null];\n    this.ccStreams_.forEach(function (ccStream) {\n      ccStream.reset();\n    });\n  };\n\n  CaptionStream.prototype.dispatchCea608Packet = function (packet) {\n    // NOTE: packet.type is the CEA608 field\n    if (this.setsChannel1Active(packet)) {\n      this.activeCea608Channel_[packet.type] = 0;\n    } else if (this.setsChannel2Active(packet)) {\n      this.activeCea608Channel_[packet.type] = 1;\n    }\n\n    if (this.activeCea608Channel_[packet.type] === null) {\n      // If we haven't received anything to set the active channel, discard the\n      // data; we don't want jumbled captions\n      return;\n    }\n\n    this.ccStreams_[(packet.type << 1) + this.activeCea608Channel_[packet.type]].push(packet);\n  };\n\n  CaptionStream.prototype.setsChannel1Active = function (packet) {\n    return (packet.ccData & 0x7800) === 0x1000;\n  };\n\n  CaptionStream.prototype.setsChannel2Active = function (packet) {\n    return (packet.ccData & 0x7800) === 0x1800;\n  }; // ----------------------\n  // Session to Application\n  // ----------------------\n  // This hash maps non-ASCII, special, and extended character codes to their\n  // proper Unicode equivalent. The first keys that are only a single byte\n  // are the non-standard ASCII characters, which simply map the CEA608 byte\n  // to the standard ASCII/Unicode. The two-byte keys that follow are the CEA608\n  // character codes, but have their MSB bitmasked with 0x03 so that a lookup\n  // can be performed regardless of the field and data channel on which the\n  // character code was received.\n\n\n  var CHARACTER_TRANSLATION = {\n    0x2a: 0xe1,\n    // á\n    0x5c: 0xe9,\n    // é\n    0x5e: 0xed,\n    // í\n    0x5f: 0xf3,\n    // ó\n    0x60: 0xfa,\n    // ú\n    0x7b: 0xe7,\n    // ç\n    0x7c: 0xf7,\n    // ÷\n    0x7d: 0xd1,\n    // Ñ\n    0x7e: 0xf1,\n    // ñ\n    0x7f: 0x2588,\n    // █\n    0x0130: 0xae,\n    // ®\n    0x0131: 0xb0,\n    // °\n    0x0132: 0xbd,\n    // ½\n    0x0133: 0xbf,\n    // ¿\n    0x0134: 0x2122,\n    // ™\n    0x0135: 0xa2,\n    // ¢\n    0x0136: 0xa3,\n    // £\n    0x0137: 0x266a,\n    // ♪\n    0x0138: 0xe0,\n    // à\n    0x0139: 0xa0,\n    //\n    0x013a: 0xe8,\n    // è\n    0x013b: 0xe2,\n    // â\n    0x013c: 0xea,\n    // ê\n    0x013d: 0xee,\n    // î\n    0x013e: 0xf4,\n    // ô\n    0x013f: 0xfb,\n    // û\n    0x0220: 0xc1,\n    // Á\n    0x0221: 0xc9,\n    // É\n    0x0222: 0xd3,\n    // Ó\n    0x0223: 0xda,\n    // Ú\n    0x0224: 0xdc,\n    // Ü\n    0x0225: 0xfc,\n    // ü\n    0x0226: 0x2018,\n    // ‘\n    0x0227: 0xa1,\n    // ¡\n    0x0228: 0x2a,\n    // *\n    0x0229: 0x27,\n    // '\n    0x022a: 0x2014,\n    // —\n    0x022b: 0xa9,\n    // ©\n    0x022c: 0x2120,\n    // ℠\n    0x022d: 0x2022,\n    // •\n    0x022e: 0x201c,\n    // “\n    0x022f: 0x201d,\n    // ”\n    0x0230: 0xc0,\n    // À\n    0x0231: 0xc2,\n    // Â\n    0x0232: 0xc7,\n    // Ç\n    0x0233: 0xc8,\n    // È\n    0x0234: 0xca,\n    // Ê\n    0x0235: 0xcb,\n    // Ë\n    0x0236: 0xeb,\n    // ë\n    0x0237: 0xce,\n    // Î\n    0x0238: 0xcf,\n    // Ï\n    0x0239: 0xef,\n    // ï\n    0x023a: 0xd4,\n    // Ô\n    0x023b: 0xd9,\n    // Ù\n    0x023c: 0xf9,\n    // ù\n    0x023d: 0xdb,\n    // Û\n    0x023e: 0xab,\n    // «\n    0x023f: 0xbb,\n    // »\n    0x0320: 0xc3,\n    // Ã\n    0x0321: 0xe3,\n    // ã\n    0x0322: 0xcd,\n    // Í\n    0x0323: 0xcc,\n    // Ì\n    0x0324: 0xec,\n    // ì\n    0x0325: 0xd2,\n    // Ò\n    0x0326: 0xf2,\n    // ò\n    0x0327: 0xd5,\n    // Õ\n    0x0328: 0xf5,\n    // õ\n    0x0329: 0x7b,\n    // {\n    0x032a: 0x7d,\n    // }\n    0x032b: 0x5c,\n    // \\\n    0x032c: 0x5e,\n    // ^\n    0x032d: 0x5f,\n    // _\n    0x032e: 0x7c,\n    // |\n    0x032f: 0x7e,\n    // ~\n    0x0330: 0xc4,\n    // Ä\n    0x0331: 0xe4,\n    // ä\n    0x0332: 0xd6,\n    // Ö\n    0x0333: 0xf6,\n    // ö\n    0x0334: 0xdf,\n    // ß\n    0x0335: 0xa5,\n    // ¥\n    0x0336: 0xa4,\n    // ¤\n    0x0337: 0x2502,\n    // │\n    0x0338: 0xc5,\n    // Å\n    0x0339: 0xe5,\n    // å\n    0x033a: 0xd8,\n    // Ø\n    0x033b: 0xf8,\n    // ø\n    0x033c: 0x250c,\n    // ┌\n    0x033d: 0x2510,\n    // ┐\n    0x033e: 0x2514,\n    // └\n    0x033f: 0x2518 // ┘\n\n  };\n\n  var getCharFromCode = function getCharFromCode(code) {\n    if (code === null) {\n      return '';\n    }\n\n    code = CHARACTER_TRANSLATION[code] || code;\n    return String.fromCharCode(code);\n  }; // the index of the last row in a CEA-608 display buffer\n\n\n  var BOTTOM_ROW = 14; // This array is used for mapping PACs -> row #, since there's no way of\n  // getting it through bit logic.\n\n  var ROWS = [0x1100, 0x1120, 0x1200, 0x1220, 0x1500, 0x1520, 0x1600, 0x1620, 0x1700, 0x1720, 0x1000, 0x1300, 0x1320, 0x1400, 0x1420]; // CEA-608 captions are rendered onto a 34x15 matrix of character\n  // cells. The \"bottom\" row is the last element in the outer array.\n\n  var createDisplayBuffer = function createDisplayBuffer() {\n    var result = [],\n        i = BOTTOM_ROW + 1;\n\n    while (i--) {\n      result.push('');\n    }\n\n    return result;\n  };\n\n  var Cea608Stream = function Cea608Stream(field, dataChannel) {\n    Cea608Stream.prototype.init.call(this);\n    this.field_ = field || 0;\n    this.dataChannel_ = dataChannel || 0;\n    this.name_ = 'CC' + ((this.field_ << 1 | this.dataChannel_) + 1);\n    this.setConstants();\n    this.reset();\n\n    this.push = function (packet) {\n      var data, swap, char0, char1, text; // remove the parity bits\n\n      data = packet.ccData & 0x7f7f; // ignore duplicate control codes; the spec demands they're sent twice\n\n      if (data === this.lastControlCode_) {\n        this.lastControlCode_ = null;\n        return;\n      } // Store control codes\n\n\n      if ((data & 0xf000) === 0x1000) {\n        this.lastControlCode_ = data;\n      } else if (data !== this.PADDING_) {\n        this.lastControlCode_ = null;\n      }\n\n      char0 = data >>> 8;\n      char1 = data & 0xff;\n\n      if (data === this.PADDING_) {\n        return;\n      } else if (data === this.RESUME_CAPTION_LOADING_) {\n        this.mode_ = 'popOn';\n      } else if (data === this.END_OF_CAPTION_) {\n        // If an EOC is received while in paint-on mode, the displayed caption\n        // text should be swapped to non-displayed memory as if it was a pop-on\n        // caption. Because of that, we should explicitly switch back to pop-on\n        // mode\n        this.mode_ = 'popOn';\n        this.clearFormatting(packet.pts); // if a caption was being displayed, it's gone now\n\n        this.flushDisplayed(packet.pts); // flip memory\n\n        swap = this.displayed_;\n        this.displayed_ = this.nonDisplayed_;\n        this.nonDisplayed_ = swap; // start measuring the time to display the caption\n\n        this.startPts_ = packet.pts;\n      } else if (data === this.ROLL_UP_2_ROWS_) {\n        this.rollUpRows_ = 2;\n        this.setRollUp(packet.pts);\n      } else if (data === this.ROLL_UP_3_ROWS_) {\n        this.rollUpRows_ = 3;\n        this.setRollUp(packet.pts);\n      } else if (data === this.ROLL_UP_4_ROWS_) {\n        this.rollUpRows_ = 4;\n        this.setRollUp(packet.pts);\n      } else if (data === this.CARRIAGE_RETURN_) {\n        this.clearFormatting(packet.pts);\n        this.flushDisplayed(packet.pts);\n        this.shiftRowsUp_();\n        this.startPts_ = packet.pts;\n      } else if (data === this.BACKSPACE_) {\n        if (this.mode_ === 'popOn') {\n          this.nonDisplayed_[this.row_] = this.nonDisplayed_[this.row_].slice(0, -1);\n        } else {\n          this.displayed_[this.row_] = this.displayed_[this.row_].slice(0, -1);\n        }\n      } else if (data === this.ERASE_DISPLAYED_MEMORY_) {\n        this.flushDisplayed(packet.pts);\n        this.displayed_ = createDisplayBuffer();\n      } else if (data === this.ERASE_NON_DISPLAYED_MEMORY_) {\n        this.nonDisplayed_ = createDisplayBuffer();\n      } else if (data === this.RESUME_DIRECT_CAPTIONING_) {\n        if (this.mode_ !== 'paintOn') {\n          // NOTE: This should be removed when proper caption positioning is\n          // implemented\n          this.flushDisplayed(packet.pts);\n          this.displayed_ = createDisplayBuffer();\n        }\n\n        this.mode_ = 'paintOn';\n        this.startPts_ = packet.pts; // Append special characters to caption text\n      } else if (this.isSpecialCharacter(char0, char1)) {\n        // Bitmask char0 so that we can apply character transformations\n        // regardless of field and data channel.\n        // Then byte-shift to the left and OR with char1 so we can pass the\n        // entire character code to `getCharFromCode`.\n        char0 = (char0 & 0x03) << 8;\n        text = getCharFromCode(char0 | char1);\n        this[this.mode_](packet.pts, text);\n        this.column_++; // Append extended characters to caption text\n      } else if (this.isExtCharacter(char0, char1)) {\n        // Extended characters always follow their \"non-extended\" equivalents.\n        // IE if a \"è\" is desired, you'll always receive \"eè\"; non-compliant\n        // decoders are supposed to drop the \"è\", while compliant decoders\n        // backspace the \"e\" and insert \"è\".\n        // Delete the previous character\n        if (this.mode_ === 'popOn') {\n          this.nonDisplayed_[this.row_] = this.nonDisplayed_[this.row_].slice(0, -1);\n        } else {\n          this.displayed_[this.row_] = this.displayed_[this.row_].slice(0, -1);\n        } // Bitmask char0 so that we can apply character transformations\n        // regardless of field and data channel.\n        // Then byte-shift to the left and OR with char1 so we can pass the\n        // entire character code to `getCharFromCode`.\n\n\n        char0 = (char0 & 0x03) << 8;\n        text = getCharFromCode(char0 | char1);\n        this[this.mode_](packet.pts, text);\n        this.column_++; // Process mid-row codes\n      } else if (this.isMidRowCode(char0, char1)) {\n        // Attributes are not additive, so clear all formatting\n        this.clearFormatting(packet.pts); // According to the standard, mid-row codes\n        // should be replaced with spaces, so add one now\n\n        this[this.mode_](packet.pts, ' ');\n        this.column_++;\n\n        if ((char1 & 0xe) === 0xe) {\n          this.addFormatting(packet.pts, ['i']);\n        }\n\n        if ((char1 & 0x1) === 0x1) {\n          this.addFormatting(packet.pts, ['u']);\n        } // Detect offset control codes and adjust cursor\n\n      } else if (this.isOffsetControlCode(char0, char1)) {\n        // Cursor position is set by indent PAC (see below) in 4-column\n        // increments, with an additional offset code of 1-3 to reach any\n        // of the 32 columns specified by CEA-608. So all we need to do\n        // here is increment the column cursor by the given offset.\n        this.column_ += char1 & 0x03; // Detect PACs (Preamble Address Codes)\n      } else if (this.isPAC(char0, char1)) {\n        // There's no logic for PAC -> row mapping, so we have to just\n        // find the row code in an array and use its index :(\n        var row = ROWS.indexOf(data & 0x1f20); // Configure the caption window if we're in roll-up mode\n\n        if (this.mode_ === 'rollUp') {\n          // This implies that the base row is incorrectly set.\n          // As per the recommendation in CEA-608(Base Row Implementation), defer to the number\n          // of roll-up rows set.\n          if (row - this.rollUpRows_ + 1 < 0) {\n            row = this.rollUpRows_ - 1;\n          }\n\n          this.setRollUp(packet.pts, row);\n        }\n\n        if (row !== this.row_) {\n          // formatting is only persistent for current row\n          this.clearFormatting(packet.pts);\n          this.row_ = row;\n        } // All PACs can apply underline, so detect and apply\n        // (All odd-numbered second bytes set underline)\n\n\n        if (char1 & 0x1 && this.formatting_.indexOf('u') === -1) {\n          this.addFormatting(packet.pts, ['u']);\n        }\n\n        if ((data & 0x10) === 0x10) {\n          // We've got an indent level code. Each successive even number\n          // increments the column cursor by 4, so we can get the desired\n          // column position by bit-shifting to the right (to get n/2)\n          // and multiplying by 4.\n          this.column_ = ((data & 0xe) >> 1) * 4;\n        }\n\n        if (this.isColorPAC(char1)) {\n          // it's a color code, though we only support white, which\n          // can be either normal or italicized. white italics can be\n          // either 0x4e or 0x6e depending on the row, so we just\n          // bitwise-and with 0xe to see if italics should be turned on\n          if ((char1 & 0xe) === 0xe) {\n            this.addFormatting(packet.pts, ['i']);\n          }\n        } // We have a normal character in char0, and possibly one in char1\n\n      } else if (this.isNormalChar(char0)) {\n        if (char1 === 0x00) {\n          char1 = null;\n        }\n\n        text = getCharFromCode(char0);\n        text += getCharFromCode(char1);\n        this[this.mode_](packet.pts, text);\n        this.column_ += text.length;\n      } // finish data processing\n\n    };\n  };\n\n  Cea608Stream.prototype = new stream(); // Trigger a cue point that captures the current state of the\n  // display buffer\n\n  Cea608Stream.prototype.flushDisplayed = function (pts) {\n    var content = this.displayed_ // remove spaces from the start and end of the string\n    .map(function (row) {\n      try {\n        return row.trim();\n      } catch (e) {\n        // Ordinarily, this shouldn't happen. However, caption\n        // parsing errors should not throw exceptions and\n        // break playback.\n        // eslint-disable-next-line no-console\n        console.error('Skipping malformed caption.');\n        return '';\n      }\n    }) // combine all text rows to display in one cue\n    .join('\\n') // and remove blank rows from the start and end, but not the middle\n    .replace(/^\\n+|\\n+$/g, '');\n\n    if (content.length) {\n      this.trigger('data', {\n        startPts: this.startPts_,\n        endPts: pts,\n        text: content,\n        stream: this.name_\n      });\n    }\n  };\n  /**\n   * Zero out the data, used for startup and on seek\n   */\n\n\n  Cea608Stream.prototype.reset = function () {\n    this.mode_ = 'popOn'; // When in roll-up mode, the index of the last row that will\n    // actually display captions. If a caption is shifted to a row\n    // with a lower index than this, it is cleared from the display\n    // buffer\n\n    this.topRow_ = 0;\n    this.startPts_ = 0;\n    this.displayed_ = createDisplayBuffer();\n    this.nonDisplayed_ = createDisplayBuffer();\n    this.lastControlCode_ = null; // Track row and column for proper line-breaking and spacing\n\n    this.column_ = 0;\n    this.row_ = BOTTOM_ROW;\n    this.rollUpRows_ = 2; // This variable holds currently-applied formatting\n\n    this.formatting_ = [];\n  };\n  /**\n   * Sets up control code and related constants for this instance\n   */\n\n\n  Cea608Stream.prototype.setConstants = function () {\n    // The following attributes have these uses:\n    // ext_ :    char0 for mid-row codes, and the base for extended\n    //           chars (ext_+0, ext_+1, and ext_+2 are char0s for\n    //           extended codes)\n    // control_: char0 for control codes, except byte-shifted to the\n    //           left so that we can do this.control_ | CONTROL_CODE\n    // offset_:  char0 for tab offset codes\n    //\n    // It's also worth noting that control codes, and _only_ control codes,\n    // differ between field 1 and field2. Field 2 control codes are always\n    // their field 1 value plus 1. That's why there's the \"| field\" on the\n    // control value.\n    if (this.dataChannel_ === 0) {\n      this.BASE_ = 0x10;\n      this.EXT_ = 0x11;\n      this.CONTROL_ = (0x14 | this.field_) << 8;\n      this.OFFSET_ = 0x17;\n    } else if (this.dataChannel_ === 1) {\n      this.BASE_ = 0x18;\n      this.EXT_ = 0x19;\n      this.CONTROL_ = (0x1c | this.field_) << 8;\n      this.OFFSET_ = 0x1f;\n    } // Constants for the LSByte command codes recognized by Cea608Stream. This\n    // list is not exhaustive. For a more comprehensive listing and semantics see\n    // http://www.gpo.gov/fdsys/pkg/CFR-2010-title47-vol1/pdf/CFR-2010-title47-vol1-sec15-119.pdf\n    // Padding\n\n\n    this.PADDING_ = 0x0000; // Pop-on Mode\n\n    this.RESUME_CAPTION_LOADING_ = this.CONTROL_ | 0x20;\n    this.END_OF_CAPTION_ = this.CONTROL_ | 0x2f; // Roll-up Mode\n\n    this.ROLL_UP_2_ROWS_ = this.CONTROL_ | 0x25;\n    this.ROLL_UP_3_ROWS_ = this.CONTROL_ | 0x26;\n    this.ROLL_UP_4_ROWS_ = this.CONTROL_ | 0x27;\n    this.CARRIAGE_RETURN_ = this.CONTROL_ | 0x2d; // paint-on mode\n\n    this.RESUME_DIRECT_CAPTIONING_ = this.CONTROL_ | 0x29; // Erasure\n\n    this.BACKSPACE_ = this.CONTROL_ | 0x21;\n    this.ERASE_DISPLAYED_MEMORY_ = this.CONTROL_ | 0x2c;\n    this.ERASE_NON_DISPLAYED_MEMORY_ = this.CONTROL_ | 0x2e;\n  };\n  /**\n   * Detects if the 2-byte packet data is a special character\n   *\n   * Special characters have a second byte in the range 0x30 to 0x3f,\n   * with the first byte being 0x11 (for data channel 1) or 0x19 (for\n   * data channel 2).\n   *\n   * @param  {Integer} char0 The first byte\n   * @param  {Integer} char1 The second byte\n   * @return {Boolean}       Whether the 2 bytes are an special character\n   */\n\n\n  Cea608Stream.prototype.isSpecialCharacter = function (char0, char1) {\n    return char0 === this.EXT_ && char1 >= 0x30 && char1 <= 0x3f;\n  };\n  /**\n   * Detects if the 2-byte packet data is an extended character\n   *\n   * Extended characters have a second byte in the range 0x20 to 0x3f,\n   * with the first byte being 0x12 or 0x13 (for data channel 1) or\n   * 0x1a or 0x1b (for data channel 2).\n   *\n   * @param  {Integer} char0 The first byte\n   * @param  {Integer} char1 The second byte\n   * @return {Boolean}       Whether the 2 bytes are an extended character\n   */\n\n\n  Cea608Stream.prototype.isExtCharacter = function (char0, char1) {\n    return (char0 === this.EXT_ + 1 || char0 === this.EXT_ + 2) && char1 >= 0x20 && char1 <= 0x3f;\n  };\n  /**\n   * Detects if the 2-byte packet is a mid-row code\n   *\n   * Mid-row codes have a second byte in the range 0x20 to 0x2f, with\n   * the first byte being 0x11 (for data channel 1) or 0x19 (for data\n   * channel 2).\n   *\n   * @param  {Integer} char0 The first byte\n   * @param  {Integer} char1 The second byte\n   * @return {Boolean}       Whether the 2 bytes are a mid-row code\n   */\n\n\n  Cea608Stream.prototype.isMidRowCode = function (char0, char1) {\n    return char0 === this.EXT_ && char1 >= 0x20 && char1 <= 0x2f;\n  };\n  /**\n   * Detects if the 2-byte packet is an offset control code\n   *\n   * Offset control codes have a second byte in the range 0x21 to 0x23,\n   * with the first byte being 0x17 (for data channel 1) or 0x1f (for\n   * data channel 2).\n   *\n   * @param  {Integer} char0 The first byte\n   * @param  {Integer} char1 The second byte\n   * @return {Boolean}       Whether the 2 bytes are an offset control code\n   */\n\n\n  Cea608Stream.prototype.isOffsetControlCode = function (char0, char1) {\n    return char0 === this.OFFSET_ && char1 >= 0x21 && char1 <= 0x23;\n  };\n  /**\n   * Detects if the 2-byte packet is a Preamble Address Code\n   *\n   * PACs have a first byte in the range 0x10 to 0x17 (for data channel 1)\n   * or 0x18 to 0x1f (for data channel 2), with the second byte in the\n   * range 0x40 to 0x7f.\n   *\n   * @param  {Integer} char0 The first byte\n   * @param  {Integer} char1 The second byte\n   * @return {Boolean}       Whether the 2 bytes are a PAC\n   */\n\n\n  Cea608Stream.prototype.isPAC = function (char0, char1) {\n    return char0 >= this.BASE_ && char0 < this.BASE_ + 8 && char1 >= 0x40 && char1 <= 0x7f;\n  };\n  /**\n   * Detects if a packet's second byte is in the range of a PAC color code\n   *\n   * PAC color codes have the second byte be in the range 0x40 to 0x4f, or\n   * 0x60 to 0x6f.\n   *\n   * @param  {Integer} char1 The second byte\n   * @return {Boolean}       Whether the byte is a color PAC\n   */\n\n\n  Cea608Stream.prototype.isColorPAC = function (char1) {\n    return char1 >= 0x40 && char1 <= 0x4f || char1 >= 0x60 && char1 <= 0x7f;\n  };\n  /**\n   * Detects if a single byte is in the range of a normal character\n   *\n   * Normal text bytes are in the range 0x20 to 0x7f.\n   *\n   * @param  {Integer} char  The byte\n   * @return {Boolean}       Whether the byte is a normal character\n   */\n\n\n  Cea608Stream.prototype.isNormalChar = function (char) {\n    return char >= 0x20 && char <= 0x7f;\n  };\n  /**\n   * Configures roll-up\n   *\n   * @param  {Integer} pts         Current PTS\n   * @param  {Integer} newBaseRow  Used by PACs to slide the current window to\n   *                               a new position\n   */\n\n\n  Cea608Stream.prototype.setRollUp = function (pts, newBaseRow) {\n    // Reset the base row to the bottom row when switching modes\n    if (this.mode_ !== 'rollUp') {\n      this.row_ = BOTTOM_ROW;\n      this.mode_ = 'rollUp'; // Spec says to wipe memories when switching to roll-up\n\n      this.flushDisplayed(pts);\n      this.nonDisplayed_ = createDisplayBuffer();\n      this.displayed_ = createDisplayBuffer();\n    }\n\n    if (newBaseRow !== undefined && newBaseRow !== this.row_) {\n      // move currently displayed captions (up or down) to the new base row\n      for (var i = 0; i < this.rollUpRows_; i++) {\n        this.displayed_[newBaseRow - i] = this.displayed_[this.row_ - i];\n        this.displayed_[this.row_ - i] = '';\n      }\n    }\n\n    if (newBaseRow === undefined) {\n      newBaseRow = this.row_;\n    }\n\n    this.topRow_ = newBaseRow - this.rollUpRows_ + 1;\n  }; // Adds the opening HTML tag for the passed character to the caption text,\n  // and keeps track of it for later closing\n\n\n  Cea608Stream.prototype.addFormatting = function (pts, format) {\n    this.formatting_ = this.formatting_.concat(format);\n    var text = format.reduce(function (text, format) {\n      return text + '<' + format + '>';\n    }, '');\n    this[this.mode_](pts, text);\n  }; // Adds HTML closing tags for current formatting to caption text and\n  // clears remembered formatting\n\n\n  Cea608Stream.prototype.clearFormatting = function (pts) {\n    if (!this.formatting_.length) {\n      return;\n    }\n\n    var text = this.formatting_.reverse().reduce(function (text, format) {\n      return text + '</' + format + '>';\n    }, '');\n    this.formatting_ = [];\n    this[this.mode_](pts, text);\n  }; // Mode Implementations\n\n\n  Cea608Stream.prototype.popOn = function (pts, text) {\n    var baseRow = this.nonDisplayed_[this.row_]; // buffer characters\n\n    baseRow += text;\n    this.nonDisplayed_[this.row_] = baseRow;\n  };\n\n  Cea608Stream.prototype.rollUp = function (pts, text) {\n    var baseRow = this.displayed_[this.row_];\n    baseRow += text;\n    this.displayed_[this.row_] = baseRow;\n  };\n\n  Cea608Stream.prototype.shiftRowsUp_ = function () {\n    var i; // clear out inactive rows\n\n    for (i = 0; i < this.topRow_; i++) {\n      this.displayed_[i] = '';\n    }\n\n    for (i = this.row_ + 1; i < BOTTOM_ROW + 1; i++) {\n      this.displayed_[i] = '';\n    } // shift displayed rows up\n\n\n    for (i = this.topRow_; i < this.row_; i++) {\n      this.displayed_[i] = this.displayed_[i + 1];\n    } // clear out the bottom row\n\n\n    this.displayed_[this.row_] = '';\n  };\n\n  Cea608Stream.prototype.paintOn = function (pts, text) {\n    var baseRow = this.displayed_[this.row_];\n    baseRow += text;\n    this.displayed_[this.row_] = baseRow;\n  }; // exports\n\n\n  var captionStream = {\n    CaptionStream: CaptionStream,\n    Cea608Stream: Cea608Stream\n  };\n\n  var streamTypes = {\n    H264_STREAM_TYPE: 0x1B,\n    ADTS_STREAM_TYPE: 0x0F,\n    METADATA_STREAM_TYPE: 0x15\n  };\n\n  var MAX_TS = 8589934592;\n  var RO_THRESH = 4294967296;\n\n  var handleRollover = function handleRollover(value, reference) {\n    var direction = 1;\n\n    if (value > reference) {\n      // If the current timestamp value is greater than our reference timestamp and we detect a\n      // timestamp rollover, this means the roll over is happening in the opposite direction.\n      // Example scenario: Enter a long stream/video just after a rollover occurred. The reference\n      // point will be set to a small number, e.g. 1. The user then seeks backwards over the\n      // rollover point. In loading this segment, the timestamp values will be very large,\n      // e.g. 2^33 - 1. Since this comes before the data we loaded previously, we want to adjust\n      // the time stamp to be `value - 2^33`.\n      direction = -1;\n    } // Note: A seek forwards or back that is greater than the RO_THRESH (2^32, ~13 hours) will\n    // cause an incorrect adjustment.\n\n\n    while (Math.abs(reference - value) > RO_THRESH) {\n      value += direction * MAX_TS;\n    }\n\n    return value;\n  };\n\n  var TimestampRolloverStream = function TimestampRolloverStream(type) {\n    var lastDTS, referenceDTS;\n    TimestampRolloverStream.prototype.init.call(this);\n    this.type_ = type;\n\n    this.push = function (data) {\n      if (data.type !== this.type_) {\n        return;\n      }\n\n      if (referenceDTS === undefined) {\n        referenceDTS = data.dts;\n      }\n\n      data.dts = handleRollover(data.dts, referenceDTS);\n      data.pts = handleRollover(data.pts, referenceDTS);\n      lastDTS = data.dts;\n      this.trigger('data', data);\n    };\n\n    this.flush = function () {\n      referenceDTS = lastDTS;\n      this.trigger('done');\n    };\n\n    this.discontinuity = function () {\n      referenceDTS = void 0;\n      lastDTS = void 0;\n    };\n  };\n\n  TimestampRolloverStream.prototype = new stream();\n  var timestampRolloverStream = {\n    TimestampRolloverStream: TimestampRolloverStream,\n    handleRollover: handleRollover\n  };\n\n  var percentEncode = function percentEncode(bytes, start, end) {\n    var i,\n        result = '';\n\n    for (i = start; i < end; i++) {\n      result += '%' + ('00' + bytes[i].toString(16)).slice(-2);\n    }\n\n    return result;\n  },\n      // return the string representation of the specified byte range,\n  // interpreted as UTf-8.\n  parseUtf8 = function parseUtf8(bytes, start, end) {\n    return decodeURIComponent(percentEncode(bytes, start, end));\n  },\n      // return the string representation of the specified byte range,\n  // interpreted as ISO-8859-1.\n  parseIso88591 = function parseIso88591(bytes, start, end) {\n    return unescape(percentEncode(bytes, start, end)); // jshint ignore:line\n  },\n      parseSyncSafeInteger = function parseSyncSafeInteger(data) {\n    return data[0] << 21 | data[1] << 14 | data[2] << 7 | data[3];\n  },\n      tagParsers = {\n    TXXX: function TXXX(tag) {\n      var i;\n\n      if (tag.data[0] !== 3) {\n        // ignore frames with unrecognized character encodings\n        return;\n      }\n\n      for (i = 1; i < tag.data.length; i++) {\n        if (tag.data[i] === 0) {\n          // parse the text fields\n          tag.description = parseUtf8(tag.data, 1, i); // do not include the null terminator in the tag value\n\n          tag.value = parseUtf8(tag.data, i + 1, tag.data.length).replace(/\\0*$/, '');\n          break;\n        }\n      }\n\n      tag.data = tag.value;\n    },\n    WXXX: function WXXX(tag) {\n      var i;\n\n      if (tag.data[0] !== 3) {\n        // ignore frames with unrecognized character encodings\n        return;\n      }\n\n      for (i = 1; i < tag.data.length; i++) {\n        if (tag.data[i] === 0) {\n          // parse the description and URL fields\n          tag.description = parseUtf8(tag.data, 1, i);\n          tag.url = parseUtf8(tag.data, i + 1, tag.data.length);\n          break;\n        }\n      }\n    },\n    PRIV: function PRIV(tag) {\n      var i;\n\n      for (i = 0; i < tag.data.length; i++) {\n        if (tag.data[i] === 0) {\n          // parse the description and URL fields\n          tag.owner = parseIso88591(tag.data, 0, i);\n          break;\n        }\n      }\n\n      tag.privateData = tag.data.subarray(i + 1);\n      tag.data = tag.privateData;\n    }\n  },\n      _MetadataStream;\n\n  _MetadataStream = function MetadataStream(options) {\n    var settings = {\n      debug: !!(options && options.debug),\n      // the bytes of the program-level descriptor field in MP2T\n      // see ISO/IEC 13818-1:2013 (E), section 2.6 \"Program and\n      // program element descriptors\"\n      descriptor: options && options.descriptor\n    },\n        // the total size in bytes of the ID3 tag being parsed\n    tagSize = 0,\n        // tag data that is not complete enough to be parsed\n    buffer = [],\n        // the total number of bytes currently in the buffer\n    bufferSize = 0,\n        i;\n\n    _MetadataStream.prototype.init.call(this); // calculate the text track in-band metadata track dispatch type\n    // https://html.spec.whatwg.org/multipage/embedded-content.html#steps-to-expose-a-media-resource-specific-text-track\n\n\n    this.dispatchType = streamTypes.METADATA_STREAM_TYPE.toString(16);\n\n    if (settings.descriptor) {\n      for (i = 0; i < settings.descriptor.length; i++) {\n        this.dispatchType += ('00' + settings.descriptor[i].toString(16)).slice(-2);\n      }\n    }\n\n    this.push = function (chunk) {\n      var tag, frameStart, frameSize, frame, i, frameHeader;\n\n      if (chunk.type !== 'timed-metadata') {\n        return;\n      } // if data_alignment_indicator is set in the PES header,\n      // we must have the start of a new ID3 tag. Assume anything\n      // remaining in the buffer was malformed and throw it out\n\n\n      if (chunk.dataAlignmentIndicator) {\n        bufferSize = 0;\n        buffer.length = 0;\n      } // ignore events that don't look like ID3 data\n\n\n      if (buffer.length === 0 && (chunk.data.length < 10 || chunk.data[0] !== 'I'.charCodeAt(0) || chunk.data[1] !== 'D'.charCodeAt(0) || chunk.data[2] !== '3'.charCodeAt(0))) {\n        if (settings.debug) {\n          // eslint-disable-next-line no-console\n          console.log('Skipping unrecognized metadata packet');\n        }\n\n        return;\n      } // add this chunk to the data we've collected so far\n\n\n      buffer.push(chunk);\n      bufferSize += chunk.data.byteLength; // grab the size of the entire frame from the ID3 header\n\n      if (buffer.length === 1) {\n        // the frame size is transmitted as a 28-bit integer in the\n        // last four bytes of the ID3 header.\n        // The most significant bit of each byte is dropped and the\n        // results concatenated to recover the actual value.\n        tagSize = parseSyncSafeInteger(chunk.data.subarray(6, 10)); // ID3 reports the tag size excluding the header but it's more\n        // convenient for our comparisons to include it\n\n        tagSize += 10;\n      } // if the entire frame has not arrived, wait for more data\n\n\n      if (bufferSize < tagSize) {\n        return;\n      } // collect the entire frame so it can be parsed\n\n\n      tag = {\n        data: new Uint8Array(tagSize),\n        frames: [],\n        pts: buffer[0].pts,\n        dts: buffer[0].dts\n      };\n\n      for (i = 0; i < tagSize;) {\n        tag.data.set(buffer[0].data.subarray(0, tagSize - i), i);\n        i += buffer[0].data.byteLength;\n        bufferSize -= buffer[0].data.byteLength;\n        buffer.shift();\n      } // find the start of the first frame and the end of the tag\n\n\n      frameStart = 10;\n\n      if (tag.data[5] & 0x40) {\n        // advance the frame start past the extended header\n        frameStart += 4; // header size field\n\n        frameStart += parseSyncSafeInteger(tag.data.subarray(10, 14)); // clip any padding off the end\n\n        tagSize -= parseSyncSafeInteger(tag.data.subarray(16, 20));\n      } // parse one or more ID3 frames\n      // http://id3.org/id3v2.3.0#ID3v2_frame_overview\n\n\n      do {\n        // determine the number of bytes in this frame\n        frameSize = parseSyncSafeInteger(tag.data.subarray(frameStart + 4, frameStart + 8));\n\n        if (frameSize < 1) {\n          // eslint-disable-next-line no-console\n          return console.log('Malformed ID3 frame encountered. Skipping metadata parsing.');\n        }\n\n        frameHeader = String.fromCharCode(tag.data[frameStart], tag.data[frameStart + 1], tag.data[frameStart + 2], tag.data[frameStart + 3]);\n        frame = {\n          id: frameHeader,\n          data: tag.data.subarray(frameStart + 10, frameStart + frameSize + 10)\n        };\n        frame.key = frame.id;\n\n        if (tagParsers[frame.id]) {\n          tagParsers[frame.id](frame); // handle the special PRIV frame used to indicate the start\n          // time for raw AAC data\n\n          if (frame.owner === 'com.apple.streaming.transportStreamTimestamp') {\n            var d = frame.data,\n                size = (d[3] & 0x01) << 30 | d[4] << 22 | d[5] << 14 | d[6] << 6 | d[7] >>> 2;\n            size *= 4;\n            size += d[7] & 0x03;\n            frame.timeStamp = size; // in raw AAC, all subsequent data will be timestamped based\n            // on the value of this frame\n            // we couldn't have known the appropriate pts and dts before\n            // parsing this ID3 tag so set those values now\n\n            if (tag.pts === undefined && tag.dts === undefined) {\n              tag.pts = frame.timeStamp;\n              tag.dts = frame.timeStamp;\n            }\n\n            this.trigger('timestamp', frame);\n          }\n        }\n\n        tag.frames.push(frame);\n        frameStart += 10; // advance past the frame header\n\n        frameStart += frameSize; // advance past the frame body\n      } while (frameStart < tagSize);\n\n      this.trigger('data', tag);\n    };\n  };\n\n  _MetadataStream.prototype = new stream();\n  var metadataStream = _MetadataStream;\n\n  var TimestampRolloverStream$1 = timestampRolloverStream.TimestampRolloverStream; // object types\n\n  var _TransportPacketStream, _TransportParseStream, _ElementaryStream; // constants\n\n\n  var MP2T_PACKET_LENGTH = 188,\n      // bytes\n  SYNC_BYTE = 0x47;\n  /**\n   * Splits an incoming stream of binary data into MPEG-2 Transport\n   * Stream packets.\n   */\n\n  _TransportPacketStream = function TransportPacketStream() {\n    var buffer = new Uint8Array(MP2T_PACKET_LENGTH),\n        bytesInBuffer = 0;\n\n    _TransportPacketStream.prototype.init.call(this); // Deliver new bytes to the stream.\n\n    /**\n     * Split a stream of data into M2TS packets\n    **/\n\n\n    this.push = function (bytes) {\n      var startIndex = 0,\n          endIndex = MP2T_PACKET_LENGTH,\n          everything; // If there are bytes remaining from the last segment, prepend them to the\n      // bytes that were pushed in\n\n      if (bytesInBuffer) {\n        everything = new Uint8Array(bytes.byteLength + bytesInBuffer);\n        everything.set(buffer.subarray(0, bytesInBuffer));\n        everything.set(bytes, bytesInBuffer);\n        bytesInBuffer = 0;\n      } else {\n        everything = bytes;\n      } // While we have enough data for a packet\n\n\n      while (endIndex < everything.byteLength) {\n        // Look for a pair of start and end sync bytes in the data..\n        if (everything[startIndex] === SYNC_BYTE && everything[endIndex] === SYNC_BYTE) {\n          // We found a packet so emit it and jump one whole packet forward in\n          // the stream\n          this.trigger('data', everything.subarray(startIndex, endIndex));\n          startIndex += MP2T_PACKET_LENGTH;\n          endIndex += MP2T_PACKET_LENGTH;\n          continue;\n        } // If we get here, we have somehow become de-synchronized and we need to step\n        // forward one byte at a time until we find a pair of sync bytes that denote\n        // a packet\n\n\n        startIndex++;\n        endIndex++;\n      } // If there was some data left over at the end of the segment that couldn't\n      // possibly be a whole packet, keep it because it might be the start of a packet\n      // that continues in the next segment\n\n\n      if (startIndex < everything.byteLength) {\n        buffer.set(everything.subarray(startIndex), 0);\n        bytesInBuffer = everything.byteLength - startIndex;\n      }\n    };\n    /**\n     * Passes identified M2TS packets to the TransportParseStream to be parsed\n    **/\n\n\n    this.flush = function () {\n      // If the buffer contains a whole packet when we are being flushed, emit it\n      // and empty the buffer. Otherwise hold onto the data because it may be\n      // important for decoding the next segment\n      if (bytesInBuffer === MP2T_PACKET_LENGTH && buffer[0] === SYNC_BYTE) {\n        this.trigger('data', buffer);\n        bytesInBuffer = 0;\n      }\n\n      this.trigger('done');\n    };\n  };\n\n  _TransportPacketStream.prototype = new stream();\n  /**\n   * Accepts an MP2T TransportPacketStream and emits data events with parsed\n   * forms of the individual transport stream packets.\n   */\n\n  _TransportParseStream = function TransportParseStream() {\n    var parsePsi, parsePat, parsePmt, self;\n\n    _TransportParseStream.prototype.init.call(this);\n\n    self = this;\n    this.packetsWaitingForPmt = [];\n    this.programMapTable = undefined;\n\n    parsePsi = function parsePsi(payload, psi) {\n      var offset = 0; // PSI packets may be split into multiple sections and those\n      // sections may be split into multiple packets. If a PSI\n      // section starts in this packet, the payload_unit_start_indicator\n      // will be true and the first byte of the payload will indicate\n      // the offset from the current position to the start of the\n      // section.\n\n      if (psi.payloadUnitStartIndicator) {\n        offset += payload[offset] + 1;\n      }\n\n      if (psi.type === 'pat') {\n        parsePat(payload.subarray(offset), psi);\n      } else {\n        parsePmt(payload.subarray(offset), psi);\n      }\n    };\n\n    parsePat = function parsePat(payload, pat) {\n      pat.section_number = payload[7]; // eslint-disable-line camelcase\n\n      pat.last_section_number = payload[8]; // eslint-disable-line camelcase\n      // skip the PSI header and parse the first PMT entry\n\n      self.pmtPid = (payload[10] & 0x1F) << 8 | payload[11];\n      pat.pmtPid = self.pmtPid;\n    };\n    /**\n     * Parse out the relevant fields of a Program Map Table (PMT).\n     * @param payload {Uint8Array} the PMT-specific portion of an MP2T\n     * packet. The first byte in this array should be the table_id\n     * field.\n     * @param pmt {object} the object that should be decorated with\n     * fields parsed from the PMT.\n     */\n\n\n    parsePmt = function parsePmt(payload, pmt) {\n      var sectionLength, tableEnd, programInfoLength, offset; // PMTs can be sent ahead of the time when they should actually\n      // take effect. We don't believe this should ever be the case\n      // for HLS but we'll ignore \"forward\" PMT declarations if we see\n      // them. Future PMT declarations have the current_next_indicator\n      // set to zero.\n\n      if (!(payload[5] & 0x01)) {\n        return;\n      } // overwrite any existing program map table\n\n\n      self.programMapTable = {\n        video: null,\n        audio: null,\n        'timed-metadata': {}\n      }; // the mapping table ends at the end of the current section\n\n      sectionLength = (payload[1] & 0x0f) << 8 | payload[2];\n      tableEnd = 3 + sectionLength - 4; // to determine where the table is, we have to figure out how\n      // long the program info descriptors are\n\n      programInfoLength = (payload[10] & 0x0f) << 8 | payload[11]; // advance the offset to the first entry in the mapping table\n\n      offset = 12 + programInfoLength;\n\n      while (offset < tableEnd) {\n        var streamType = payload[offset];\n        var pid = (payload[offset + 1] & 0x1F) << 8 | payload[offset + 2]; // only map a single elementary_pid for audio and video stream types\n        // TODO: should this be done for metadata too? for now maintain behavior of\n        //       multiple metadata streams\n\n        if (streamType === streamTypes.H264_STREAM_TYPE && self.programMapTable.video === null) {\n          self.programMapTable.video = pid;\n        } else if (streamType === streamTypes.ADTS_STREAM_TYPE && self.programMapTable.audio === null) {\n          self.programMapTable.audio = pid;\n        } else if (streamType === streamTypes.METADATA_STREAM_TYPE) {\n          // map pid to stream type for metadata streams\n          self.programMapTable['timed-metadata'][pid] = streamType;\n        } // move to the next table entry\n        // skip past the elementary stream descriptors, if present\n\n\n        offset += ((payload[offset + 3] & 0x0F) << 8 | payload[offset + 4]) + 5;\n      } // record the map on the packet as well\n\n\n      pmt.programMapTable = self.programMapTable;\n    };\n    /**\n     * Deliver a new MP2T packet to the next stream in the pipeline.\n     */\n\n\n    this.push = function (packet) {\n      var result = {},\n          offset = 4;\n      result.payloadUnitStartIndicator = !!(packet[1] & 0x40); // pid is a 13-bit field starting at the last bit of packet[1]\n\n      result.pid = packet[1] & 0x1f;\n      result.pid <<= 8;\n      result.pid |= packet[2]; // if an adaption field is present, its length is specified by the\n      // fifth byte of the TS packet header. The adaptation field is\n      // used to add stuffing to PES packets that don't fill a complete\n      // TS packet, and to specify some forms of timing and control data\n      // that we do not currently use.\n\n      if ((packet[3] & 0x30) >>> 4 > 0x01) {\n        offset += packet[offset] + 1;\n      } // parse the rest of the packet based on the type\n\n\n      if (result.pid === 0) {\n        result.type = 'pat';\n        parsePsi(packet.subarray(offset), result);\n        this.trigger('data', result);\n      } else if (result.pid === this.pmtPid) {\n        result.type = 'pmt';\n        parsePsi(packet.subarray(offset), result);\n        this.trigger('data', result); // if there are any packets waiting for a PMT to be found, process them now\n\n        while (this.packetsWaitingForPmt.length) {\n          this.processPes_.apply(this, this.packetsWaitingForPmt.shift());\n        }\n      } else if (this.programMapTable === undefined) {\n        // When we have not seen a PMT yet, defer further processing of\n        // PES packets until one has been parsed\n        this.packetsWaitingForPmt.push([packet, offset, result]);\n      } else {\n        this.processPes_(packet, offset, result);\n      }\n    };\n\n    this.processPes_ = function (packet, offset, result) {\n      // set the appropriate stream type\n      if (result.pid === this.programMapTable.video) {\n        result.streamType = streamTypes.H264_STREAM_TYPE;\n      } else if (result.pid === this.programMapTable.audio) {\n        result.streamType = streamTypes.ADTS_STREAM_TYPE;\n      } else {\n        // if not video or audio, it is timed-metadata or unknown\n        // if unknown, streamType will be undefined\n        result.streamType = this.programMapTable['timed-metadata'][result.pid];\n      }\n\n      result.type = 'pes';\n      result.data = packet.subarray(offset);\n      this.trigger('data', result);\n    };\n  };\n\n  _TransportParseStream.prototype = new stream();\n  _TransportParseStream.STREAM_TYPES = {\n    h264: 0x1b,\n    adts: 0x0f\n  };\n  /**\n   * Reconsistutes program elementary stream (PES) packets from parsed\n   * transport stream packets. That is, if you pipe an\n   * mp2t.TransportParseStream into a mp2t.ElementaryStream, the output\n   * events will be events which capture the bytes for individual PES\n   * packets plus relevant metadata that has been extracted from the\n   * container.\n   */\n\n  _ElementaryStream = function ElementaryStream() {\n    var self = this,\n        // PES packet fragments\n    video = {\n      data: [],\n      size: 0\n    },\n        audio = {\n      data: [],\n      size: 0\n    },\n        timedMetadata = {\n      data: [],\n      size: 0\n    },\n        parsePes = function parsePes(payload, pes) {\n      var ptsDtsFlags; // get the packet length, this will be 0 for video\n\n      pes.packetLength = 6 + (payload[4] << 8 | payload[5]); // find out if this packets starts a new keyframe\n\n      pes.dataAlignmentIndicator = (payload[6] & 0x04) !== 0; // PES packets may be annotated with a PTS value, or a PTS value\n      // and a DTS value. Determine what combination of values is\n      // available to work with.\n\n      ptsDtsFlags = payload[7]; // PTS and DTS are normally stored as a 33-bit number.  Javascript\n      // performs all bitwise operations on 32-bit integers but javascript\n      // supports a much greater range (52-bits) of integer using standard\n      // mathematical operations.\n      // We construct a 31-bit value using bitwise operators over the 31\n      // most significant bits and then multiply by 4 (equal to a left-shift\n      // of 2) before we add the final 2 least significant bits of the\n      // timestamp (equal to an OR.)\n\n      if (ptsDtsFlags & 0xC0) {\n        // the PTS and DTS are not written out directly. For information\n        // on how they are encoded, see\n        // http://dvd.sourceforge.net/dvdinfo/pes-hdr.html\n        pes.pts = (payload[9] & 0x0E) << 27 | (payload[10] & 0xFF) << 20 | (payload[11] & 0xFE) << 12 | (payload[12] & 0xFF) << 5 | (payload[13] & 0xFE) >>> 3;\n        pes.pts *= 4; // Left shift by 2\n\n        pes.pts += (payload[13] & 0x06) >>> 1; // OR by the two LSBs\n\n        pes.dts = pes.pts;\n\n        if (ptsDtsFlags & 0x40) {\n          pes.dts = (payload[14] & 0x0E) << 27 | (payload[15] & 0xFF) << 20 | (payload[16] & 0xFE) << 12 | (payload[17] & 0xFF) << 5 | (payload[18] & 0xFE) >>> 3;\n          pes.dts *= 4; // Left shift by 2\n\n          pes.dts += (payload[18] & 0x06) >>> 1; // OR by the two LSBs\n        }\n      } // the data section starts immediately after the PES header.\n      // pes_header_data_length specifies the number of header bytes\n      // that follow the last byte of the field.\n\n\n      pes.data = payload.subarray(9 + payload[8]);\n    },\n\n    /**\n      * Pass completely parsed PES packets to the next stream in the pipeline\n     **/\n    flushStream = function flushStream(stream$$1, type, forceFlush) {\n      var packetData = new Uint8Array(stream$$1.size),\n          event = {\n        type: type\n      },\n          i = 0,\n          offset = 0,\n          packetFlushable = false,\n          fragment; // do nothing if there is not enough buffered data for a complete\n      // PES header\n\n      if (!stream$$1.data.length || stream$$1.size < 9) {\n        return;\n      }\n\n      event.trackId = stream$$1.data[0].pid; // reassemble the packet\n\n      for (i = 0; i < stream$$1.data.length; i++) {\n        fragment = stream$$1.data[i];\n        packetData.set(fragment.data, offset);\n        offset += fragment.data.byteLength;\n      } // parse assembled packet's PES header\n\n\n      parsePes(packetData, event); // non-video PES packets MUST have a non-zero PES_packet_length\n      // check that there is enough stream data to fill the packet\n\n      packetFlushable = type === 'video' || event.packetLength <= stream$$1.size; // flush pending packets if the conditions are right\n\n      if (forceFlush || packetFlushable) {\n        stream$$1.size = 0;\n        stream$$1.data.length = 0;\n      } // only emit packets that are complete. this is to avoid assembling\n      // incomplete PES packets due to poor segmentation\n\n\n      if (packetFlushable) {\n        self.trigger('data', event);\n      }\n    };\n\n    _ElementaryStream.prototype.init.call(this);\n    /**\n     * Identifies M2TS packet types and parses PES packets using metadata\n     * parsed from the PMT\n     **/\n\n\n    this.push = function (data) {\n      ({\n        pat: function pat() {// we have to wait for the PMT to arrive as well before we\n          // have any meaningful metadata\n        },\n        pes: function pes() {\n          var stream$$1, streamType;\n\n          switch (data.streamType) {\n            case streamTypes.H264_STREAM_TYPE:\n            case streamTypes.H264_STREAM_TYPE:\n              stream$$1 = video;\n              streamType = 'video';\n              break;\n\n            case streamTypes.ADTS_STREAM_TYPE:\n              stream$$1 = audio;\n              streamType = 'audio';\n              break;\n\n            case streamTypes.METADATA_STREAM_TYPE:\n              stream$$1 = timedMetadata;\n              streamType = 'timed-metadata';\n              break;\n\n            default:\n              // ignore unknown stream types\n              return;\n          } // if a new packet is starting, we can flush the completed\n          // packet\n\n\n          if (data.payloadUnitStartIndicator) {\n            flushStream(stream$$1, streamType, true);\n          } // buffer this fragment until we are sure we've received the\n          // complete payload\n\n\n          stream$$1.data.push(data);\n          stream$$1.size += data.data.byteLength;\n        },\n        pmt: function pmt() {\n          var event = {\n            type: 'metadata',\n            tracks: []\n          },\n              programMapTable = data.programMapTable; // translate audio and video streams to tracks\n\n          if (programMapTable.video !== null) {\n            event.tracks.push({\n              timelineStartInfo: {\n                baseMediaDecodeTime: 0\n              },\n              id: +programMapTable.video,\n              codec: 'avc',\n              type: 'video'\n            });\n          }\n\n          if (programMapTable.audio !== null) {\n            event.tracks.push({\n              timelineStartInfo: {\n                baseMediaDecodeTime: 0\n              },\n              id: +programMapTable.audio,\n              codec: 'adts',\n              type: 'audio'\n            });\n          }\n\n          self.trigger('data', event);\n        }\n      })[data.type]();\n    };\n    /**\n     * Flush any remaining input. Video PES packets may be of variable\n     * length. Normally, the start of a new video packet can trigger the\n     * finalization of the previous packet. That is not possible if no\n     * more video is forthcoming, however. In that case, some other\n     * mechanism (like the end of the file) has to be employed. When it is\n     * clear that no additional data is forthcoming, calling this method\n     * will flush the buffered packets.\n     */\n\n\n    this.flush = function () {\n      // !!THIS ORDER IS IMPORTANT!!\n      // video first then audio\n      flushStream(video, 'video');\n      flushStream(audio, 'audio');\n      flushStream(timedMetadata, 'timed-metadata');\n      this.trigger('done');\n    };\n  };\n\n  _ElementaryStream.prototype = new stream();\n  var m2ts = {\n    PAT_PID: 0x0000,\n    MP2T_PACKET_LENGTH: MP2T_PACKET_LENGTH,\n    TransportPacketStream: _TransportPacketStream,\n    TransportParseStream: _TransportParseStream,\n    ElementaryStream: _ElementaryStream,\n    TimestampRolloverStream: TimestampRolloverStream$1,\n    CaptionStream: captionStream.CaptionStream,\n    Cea608Stream: captionStream.Cea608Stream,\n    MetadataStream: metadataStream\n  };\n\n  for (var type$1 in streamTypes) {\n    if (streamTypes.hasOwnProperty(type$1)) {\n      m2ts[type$1] = streamTypes[type$1];\n    }\n  }\n\n  var m2ts_1 = m2ts;\n\n  var _AdtsStream;\n\n  var ADTS_SAMPLING_FREQUENCIES = [96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, 16000, 12000, 11025, 8000, 7350];\n  /*\n   * Accepts a ElementaryStream and emits data events with parsed\n   * AAC Audio Frames of the individual packets. Input audio in ADTS\n   * format is unpacked and re-emitted as AAC frames.\n   *\n   * @see http://wiki.multimedia.cx/index.php?title=ADTS\n   * @see http://wiki.multimedia.cx/?title=Understanding_AAC\n   */\n\n  _AdtsStream = function AdtsStream() {\n    var buffer;\n\n    _AdtsStream.prototype.init.call(this);\n\n    this.push = function (packet) {\n      var i = 0,\n          frameNum = 0,\n          frameLength,\n          protectionSkipBytes,\n          frameEnd,\n          oldBuffer,\n          sampleCount,\n          adtsFrameDuration;\n\n      if (packet.type !== 'audio') {\n        // ignore non-audio data\n        return;\n      } // Prepend any data in the buffer to the input data so that we can parse\n      // aac frames the cross a PES packet boundary\n\n\n      if (buffer) {\n        oldBuffer = buffer;\n        buffer = new Uint8Array(oldBuffer.byteLength + packet.data.byteLength);\n        buffer.set(oldBuffer);\n        buffer.set(packet.data, oldBuffer.byteLength);\n      } else {\n        buffer = packet.data;\n      } // unpack any ADTS frames which have been fully received\n      // for details on the ADTS header, see http://wiki.multimedia.cx/index.php?title=ADTS\n\n\n      while (i + 5 < buffer.length) {\n        // Loook for the start of an ADTS header..\n        if (buffer[i] !== 0xFF || (buffer[i + 1] & 0xF6) !== 0xF0) {\n          // If a valid header was not found,  jump one forward and attempt to\n          // find a valid ADTS header starting at the next byte\n          i++;\n          continue;\n        } // The protection skip bit tells us if we have 2 bytes of CRC data at the\n        // end of the ADTS header\n\n\n        protectionSkipBytes = (~buffer[i + 1] & 0x01) * 2; // Frame length is a 13 bit integer starting 16 bits from the\n        // end of the sync sequence\n\n        frameLength = (buffer[i + 3] & 0x03) << 11 | buffer[i + 4] << 3 | (buffer[i + 5] & 0xe0) >> 5;\n        sampleCount = ((buffer[i + 6] & 0x03) + 1) * 1024;\n        adtsFrameDuration = sampleCount * 90000 / ADTS_SAMPLING_FREQUENCIES[(buffer[i + 2] & 0x3c) >>> 2];\n        frameEnd = i + frameLength; // If we don't have enough data to actually finish this ADTS frame, return\n        // and wait for more data\n\n        if (buffer.byteLength < frameEnd) {\n          return;\n        } // Otherwise, deliver the complete AAC frame\n\n\n        this.trigger('data', {\n          pts: packet.pts + frameNum * adtsFrameDuration,\n          dts: packet.dts + frameNum * adtsFrameDuration,\n          sampleCount: sampleCount,\n          audioobjecttype: (buffer[i + 2] >>> 6 & 0x03) + 1,\n          channelcount: (buffer[i + 2] & 1) << 2 | (buffer[i + 3] & 0xc0) >>> 6,\n          samplerate: ADTS_SAMPLING_FREQUENCIES[(buffer[i + 2] & 0x3c) >>> 2],\n          samplingfrequencyindex: (buffer[i + 2] & 0x3c) >>> 2,\n          // assume ISO/IEC 14496-12 AudioSampleEntry default of 16\n          samplesize: 16,\n          data: buffer.subarray(i + 7 + protectionSkipBytes, frameEnd)\n        }); // If the buffer is empty, clear it and return\n\n        if (buffer.byteLength === frameEnd) {\n          buffer = undefined;\n          return;\n        }\n\n        frameNum++; // Remove the finished frame from the buffer and start the process again\n\n        buffer = buffer.subarray(frameEnd);\n      }\n    };\n\n    this.flush = function () {\n      this.trigger('done');\n    };\n  };\n\n  _AdtsStream.prototype = new stream();\n  var adts = _AdtsStream;\n\n  var ExpGolomb;\n  /**\n   * Parser for exponential Golomb codes, a variable-bitwidth number encoding\n   * scheme used by h264.\n   */\n\n  ExpGolomb = function ExpGolomb(workingData) {\n    var // the number of bytes left to examine in workingData\n    workingBytesAvailable = workingData.byteLength,\n        // the current word being examined\n    workingWord = 0,\n        // :uint\n    // the number of bits left to examine in the current word\n    workingBitsAvailable = 0; // :uint;\n    // ():uint\n\n    this.length = function () {\n      return 8 * workingBytesAvailable;\n    }; // ():uint\n\n\n    this.bitsAvailable = function () {\n      return 8 * workingBytesAvailable + workingBitsAvailable;\n    }; // ():void\n\n\n    this.loadWord = function () {\n      var position = workingData.byteLength - workingBytesAvailable,\n          workingBytes = new Uint8Array(4),\n          availableBytes = Math.min(4, workingBytesAvailable);\n\n      if (availableBytes === 0) {\n        throw new Error('no bytes available');\n      }\n\n      workingBytes.set(workingData.subarray(position, position + availableBytes));\n      workingWord = new DataView(workingBytes.buffer).getUint32(0); // track the amount of workingData that has been processed\n\n      workingBitsAvailable = availableBytes * 8;\n      workingBytesAvailable -= availableBytes;\n    }; // (count:int):void\n\n\n    this.skipBits = function (count) {\n      var skipBytes; // :int\n\n      if (workingBitsAvailable > count) {\n        workingWord <<= count;\n        workingBitsAvailable -= count;\n      } else {\n        count -= workingBitsAvailable;\n        skipBytes = Math.floor(count / 8);\n        count -= skipBytes * 8;\n        workingBytesAvailable -= skipBytes;\n        this.loadWord();\n        workingWord <<= count;\n        workingBitsAvailable -= count;\n      }\n    }; // (size:int):uint\n\n\n    this.readBits = function (size) {\n      var bits = Math.min(workingBitsAvailable, size),\n          // :uint\n      valu = workingWord >>> 32 - bits; // :uint\n      // if size > 31, handle error\n\n      workingBitsAvailable -= bits;\n\n      if (workingBitsAvailable > 0) {\n        workingWord <<= bits;\n      } else if (workingBytesAvailable > 0) {\n        this.loadWord();\n      }\n\n      bits = size - bits;\n\n      if (bits > 0) {\n        return valu << bits | this.readBits(bits);\n      }\n\n      return valu;\n    }; // ():uint\n\n\n    this.skipLeadingZeros = function () {\n      var leadingZeroCount; // :uint\n\n      for (leadingZeroCount = 0; leadingZeroCount < workingBitsAvailable; ++leadingZeroCount) {\n        if ((workingWord & 0x80000000 >>> leadingZeroCount) !== 0) {\n          // the first bit of working word is 1\n          workingWord <<= leadingZeroCount;\n          workingBitsAvailable -= leadingZeroCount;\n          return leadingZeroCount;\n        }\n      } // we exhausted workingWord and still have not found a 1\n\n\n      this.loadWord();\n      return leadingZeroCount + this.skipLeadingZeros();\n    }; // ():void\n\n\n    this.skipUnsignedExpGolomb = function () {\n      this.skipBits(1 + this.skipLeadingZeros());\n    }; // ():void\n\n\n    this.skipExpGolomb = function () {\n      this.skipBits(1 + this.skipLeadingZeros());\n    }; // ():uint\n\n\n    this.readUnsignedExpGolomb = function () {\n      var clz = this.skipLeadingZeros(); // :uint\n\n      return this.readBits(clz + 1) - 1;\n    }; // ():int\n\n\n    this.readExpGolomb = function () {\n      var valu = this.readUnsignedExpGolomb(); // :int\n\n      if (0x01 & valu) {\n        // the number is odd if the low order bit is set\n        return 1 + valu >>> 1; // add 1 to make it even, and divide by 2\n      }\n\n      return -1 * (valu >>> 1); // divide by two then make it negative\n    }; // Some convenience functions\n    // :Boolean\n\n\n    this.readBoolean = function () {\n      return this.readBits(1) === 1;\n    }; // ():int\n\n\n    this.readUnsignedByte = function () {\n      return this.readBits(8);\n    };\n\n    this.loadWord();\n  };\n\n  var expGolomb = ExpGolomb;\n\n  var _H264Stream, _NalByteStream;\n\n  var PROFILES_WITH_OPTIONAL_SPS_DATA;\n  /**\n   * Accepts a NAL unit byte stream and unpacks the embedded NAL units.\n   */\n\n  _NalByteStream = function NalByteStream() {\n    var syncPoint = 0,\n        i,\n        buffer;\n\n    _NalByteStream.prototype.init.call(this);\n    /*\n     * Scans a byte stream and triggers a data event with the NAL units found.\n     * @param {Object} data Event received from H264Stream\n     * @param {Uint8Array} data.data The h264 byte stream to be scanned\n     *\n     * @see H264Stream.push\n     */\n\n\n    this.push = function (data) {\n      var swapBuffer;\n\n      if (!buffer) {\n        buffer = data.data;\n      } else {\n        swapBuffer = new Uint8Array(buffer.byteLength + data.data.byteLength);\n        swapBuffer.set(buffer);\n        swapBuffer.set(data.data, buffer.byteLength);\n        buffer = swapBuffer;\n      } // Rec. ITU-T H.264, Annex B\n      // scan for NAL unit boundaries\n      // a match looks like this:\n      // 0 0 1 .. NAL .. 0 0 1\n      // ^ sync point        ^ i\n      // or this:\n      // 0 0 1 .. NAL .. 0 0 0\n      // ^ sync point        ^ i\n      // advance the sync point to a NAL start, if necessary\n\n\n      for (; syncPoint < buffer.byteLength - 3; syncPoint++) {\n        if (buffer[syncPoint + 2] === 1) {\n          // the sync point is properly aligned\n          i = syncPoint + 5;\n          break;\n        }\n      }\n\n      while (i < buffer.byteLength) {\n        // look at the current byte to determine if we've hit the end of\n        // a NAL unit boundary\n        switch (buffer[i]) {\n          case 0:\n            // skip past non-sync sequences\n            if (buffer[i - 1] !== 0) {\n              i += 2;\n              break;\n            } else if (buffer[i - 2] !== 0) {\n              i++;\n              break;\n            } // deliver the NAL unit if it isn't empty\n\n\n            if (syncPoint + 3 !== i - 2) {\n              this.trigger('data', buffer.subarray(syncPoint + 3, i - 2));\n            } // drop trailing zeroes\n\n\n            do {\n              i++;\n            } while (buffer[i] !== 1 && i < buffer.length);\n\n            syncPoint = i - 2;\n            i += 3;\n            break;\n\n          case 1:\n            // skip past non-sync sequences\n            if (buffer[i - 1] !== 0 || buffer[i - 2] !== 0) {\n              i += 3;\n              break;\n            } // deliver the NAL unit\n\n\n            this.trigger('data', buffer.subarray(syncPoint + 3, i - 2));\n            syncPoint = i - 2;\n            i += 3;\n            break;\n\n          default:\n            // the current byte isn't a one or zero, so it cannot be part\n            // of a sync sequence\n            i += 3;\n            break;\n        }\n      } // filter out the NAL units that were delivered\n\n\n      buffer = buffer.subarray(syncPoint);\n      i -= syncPoint;\n      syncPoint = 0;\n    };\n\n    this.flush = function () {\n      // deliver the last buffered NAL unit\n      if (buffer && buffer.byteLength > 3) {\n        this.trigger('data', buffer.subarray(syncPoint + 3));\n      } // reset the stream state\n\n\n      buffer = null;\n      syncPoint = 0;\n      this.trigger('done');\n    };\n  };\n\n  _NalByteStream.prototype = new stream(); // values of profile_idc that indicate additional fields are included in the SPS\n  // see Recommendation ITU-T H.264 (4/2013),\n  // 7.3.2.1.1 Sequence parameter set data syntax\n\n  PROFILES_WITH_OPTIONAL_SPS_DATA = {\n    100: true,\n    110: true,\n    122: true,\n    244: true,\n    44: true,\n    83: true,\n    86: true,\n    118: true,\n    128: true,\n    138: true,\n    139: true,\n    134: true\n  };\n  /**\n   * Accepts input from a ElementaryStream and produces H.264 NAL unit data\n   * events.\n   */\n\n  _H264Stream = function H264Stream() {\n    var nalByteStream = new _NalByteStream(),\n        self,\n        trackId,\n        currentPts,\n        currentDts,\n        discardEmulationPreventionBytes,\n        readSequenceParameterSet,\n        skipScalingList;\n\n    _H264Stream.prototype.init.call(this);\n\n    self = this;\n    /*\n     * Pushes a packet from a stream onto the NalByteStream\n     *\n     * @param {Object} packet - A packet received from a stream\n     * @param {Uint8Array} packet.data - The raw bytes of the packet\n     * @param {Number} packet.dts - Decode timestamp of the packet\n     * @param {Number} packet.pts - Presentation timestamp of the packet\n     * @param {Number} packet.trackId - The id of the h264 track this packet came from\n     * @param {('video'|'audio')} packet.type - The type of packet\n     *\n     */\n\n    this.push = function (packet) {\n      if (packet.type !== 'video') {\n        return;\n      }\n\n      trackId = packet.trackId;\n      currentPts = packet.pts;\n      currentDts = packet.dts;\n      nalByteStream.push(packet);\n    };\n    /*\n     * Identify NAL unit types and pass on the NALU, trackId, presentation and decode timestamps\n     * for the NALUs to the next stream component.\n     * Also, preprocess caption and sequence parameter NALUs.\n     *\n     * @param {Uint8Array} data - A NAL unit identified by `NalByteStream.push`\n     * @see NalByteStream.push\n     */\n\n\n    nalByteStream.on('data', function (data) {\n      var event = {\n        trackId: trackId,\n        pts: currentPts,\n        dts: currentDts,\n        data: data\n      };\n\n      switch (data[0] & 0x1f) {\n        case 0x05:\n          event.nalUnitType = 'slice_layer_without_partitioning_rbsp_idr';\n          break;\n\n        case 0x06:\n          event.nalUnitType = 'sei_rbsp';\n          event.escapedRBSP = discardEmulationPreventionBytes(data.subarray(1));\n          break;\n\n        case 0x07:\n          event.nalUnitType = 'seq_parameter_set_rbsp';\n          event.escapedRBSP = discardEmulationPreventionBytes(data.subarray(1));\n          event.config = readSequenceParameterSet(event.escapedRBSP);\n          break;\n\n        case 0x08:\n          event.nalUnitType = 'pic_parameter_set_rbsp';\n          break;\n\n        case 0x09:\n          event.nalUnitType = 'access_unit_delimiter_rbsp';\n          break;\n\n        default:\n          break;\n      } // This triggers data on the H264Stream\n\n\n      self.trigger('data', event);\n    });\n    nalByteStream.on('done', function () {\n      self.trigger('done');\n    });\n\n    this.flush = function () {\n      nalByteStream.flush();\n    };\n    /**\n     * Advance the ExpGolomb decoder past a scaling list. The scaling\n     * list is optionally transmitted as part of a sequence parameter\n     * set and is not relevant to transmuxing.\n     * @param count {number} the number of entries in this scaling list\n     * @param expGolombDecoder {object} an ExpGolomb pointed to the\n     * start of a scaling list\n     * @see Recommendation ITU-T H.264, Section 7.3.2.1.1.1\n     */\n\n\n    skipScalingList = function skipScalingList(count, expGolombDecoder) {\n      var lastScale = 8,\n          nextScale = 8,\n          j,\n          deltaScale;\n\n      for (j = 0; j < count; j++) {\n        if (nextScale !== 0) {\n          deltaScale = expGolombDecoder.readExpGolomb();\n          nextScale = (lastScale + deltaScale + 256) % 256;\n        }\n\n        lastScale = nextScale === 0 ? lastScale : nextScale;\n      }\n    };\n    /**\n     * Expunge any \"Emulation Prevention\" bytes from a \"Raw Byte\n     * Sequence Payload\"\n     * @param data {Uint8Array} the bytes of a RBSP from a NAL\n     * unit\n     * @return {Uint8Array} the RBSP without any Emulation\n     * Prevention Bytes\n     */\n\n\n    discardEmulationPreventionBytes = function discardEmulationPreventionBytes(data) {\n      var length = data.byteLength,\n          emulationPreventionBytesPositions = [],\n          i = 1,\n          newLength,\n          newData; // Find all `Emulation Prevention Bytes`\n\n      while (i < length - 2) {\n        if (data[i] === 0 && data[i + 1] === 0 && data[i + 2] === 0x03) {\n          emulationPreventionBytesPositions.push(i + 2);\n          i += 2;\n        } else {\n          i++;\n        }\n      } // If no Emulation Prevention Bytes were found just return the original\n      // array\n\n\n      if (emulationPreventionBytesPositions.length === 0) {\n        return data;\n      } // Create a new array to hold the NAL unit data\n\n\n      newLength = length - emulationPreventionBytesPositions.length;\n      newData = new Uint8Array(newLength);\n      var sourceIndex = 0;\n\n      for (i = 0; i < newLength; sourceIndex++, i++) {\n        if (sourceIndex === emulationPreventionBytesPositions[0]) {\n          // Skip this byte\n          sourceIndex++; // Remove this position index\n\n          emulationPreventionBytesPositions.shift();\n        }\n\n        newData[i] = data[sourceIndex];\n      }\n\n      return newData;\n    };\n    /**\n     * Read a sequence parameter set and return some interesting video\n     * properties. A sequence parameter set is the H264 metadata that\n     * describes the properties of upcoming video frames.\n     * @param data {Uint8Array} the bytes of a sequence parameter set\n     * @return {object} an object with configuration parsed from the\n     * sequence parameter set, including the dimensions of the\n     * associated video frames.\n     */\n\n\n    readSequenceParameterSet = function readSequenceParameterSet(data) {\n      var frameCropLeftOffset = 0,\n          frameCropRightOffset = 0,\n          frameCropTopOffset = 0,\n          frameCropBottomOffset = 0,\n          sarScale = 1,\n          expGolombDecoder,\n          profileIdc,\n          levelIdc,\n          profileCompatibility,\n          chromaFormatIdc,\n          picOrderCntType,\n          numRefFramesInPicOrderCntCycle,\n          picWidthInMbsMinus1,\n          picHeightInMapUnitsMinus1,\n          frameMbsOnlyFlag,\n          scalingListCount,\n          sarRatio,\n          aspectRatioIdc,\n          i;\n      expGolombDecoder = new expGolomb(data);\n      profileIdc = expGolombDecoder.readUnsignedByte(); // profile_idc\n\n      profileCompatibility = expGolombDecoder.readUnsignedByte(); // constraint_set[0-5]_flag\n\n      levelIdc = expGolombDecoder.readUnsignedByte(); // level_idc u(8)\n\n      expGolombDecoder.skipUnsignedExpGolomb(); // seq_parameter_set_id\n      // some profiles have more optional data we don't need\n\n      if (PROFILES_WITH_OPTIONAL_SPS_DATA[profileIdc]) {\n        chromaFormatIdc = expGolombDecoder.readUnsignedExpGolomb();\n\n        if (chromaFormatIdc === 3) {\n          expGolombDecoder.skipBits(1); // separate_colour_plane_flag\n        }\n\n        expGolombDecoder.skipUnsignedExpGolomb(); // bit_depth_luma_minus8\n\n        expGolombDecoder.skipUnsignedExpGolomb(); // bit_depth_chroma_minus8\n\n        expGolombDecoder.skipBits(1); // qpprime_y_zero_transform_bypass_flag\n\n        if (expGolombDecoder.readBoolean()) {\n          // seq_scaling_matrix_present_flag\n          scalingListCount = chromaFormatIdc !== 3 ? 8 : 12;\n\n          for (i = 0; i < scalingListCount; i++) {\n            if (expGolombDecoder.readBoolean()) {\n              // seq_scaling_list_present_flag[ i ]\n              if (i < 6) {\n                skipScalingList(16, expGolombDecoder);\n              } else {\n                skipScalingList(64, expGolombDecoder);\n              }\n            }\n          }\n        }\n      }\n\n      expGolombDecoder.skipUnsignedExpGolomb(); // log2_max_frame_num_minus4\n\n      picOrderCntType = expGolombDecoder.readUnsignedExpGolomb();\n\n      if (picOrderCntType === 0) {\n        expGolombDecoder.readUnsignedExpGolomb(); // log2_max_pic_order_cnt_lsb_minus4\n      } else if (picOrderCntType === 1) {\n        expGolombDecoder.skipBits(1); // delta_pic_order_always_zero_flag\n\n        expGolombDecoder.skipExpGolomb(); // offset_for_non_ref_pic\n\n        expGolombDecoder.skipExpGolomb(); // offset_for_top_to_bottom_field\n\n        numRefFramesInPicOrderCntCycle = expGolombDecoder.readUnsignedExpGolomb();\n\n        for (i = 0; i < numRefFramesInPicOrderCntCycle; i++) {\n          expGolombDecoder.skipExpGolomb(); // offset_for_ref_frame[ i ]\n        }\n      }\n\n      expGolombDecoder.skipUnsignedExpGolomb(); // max_num_ref_frames\n\n      expGolombDecoder.skipBits(1); // gaps_in_frame_num_value_allowed_flag\n\n      picWidthInMbsMinus1 = expGolombDecoder.readUnsignedExpGolomb();\n      picHeightInMapUnitsMinus1 = expGolombDecoder.readUnsignedExpGolomb();\n      frameMbsOnlyFlag = expGolombDecoder.readBits(1);\n\n      if (frameMbsOnlyFlag === 0) {\n        expGolombDecoder.skipBits(1); // mb_adaptive_frame_field_flag\n      }\n\n      expGolombDecoder.skipBits(1); // direct_8x8_inference_flag\n\n      if (expGolombDecoder.readBoolean()) {\n        // frame_cropping_flag\n        frameCropLeftOffset = expGolombDecoder.readUnsignedExpGolomb();\n        frameCropRightOffset = expGolombDecoder.readUnsignedExpGolomb();\n        frameCropTopOffset = expGolombDecoder.readUnsignedExpGolomb();\n        frameCropBottomOffset = expGolombDecoder.readUnsignedExpGolomb();\n      }\n\n      if (expGolombDecoder.readBoolean()) {\n        // vui_parameters_present_flag\n        if (expGolombDecoder.readBoolean()) {\n          // aspect_ratio_info_present_flag\n          aspectRatioIdc = expGolombDecoder.readUnsignedByte();\n\n          switch (aspectRatioIdc) {\n            case 1:\n              sarRatio = [1, 1];\n              break;\n\n            case 2:\n              sarRatio = [12, 11];\n              break;\n\n            case 3:\n              sarRatio = [10, 11];\n              break;\n\n            case 4:\n              sarRatio = [16, 11];\n              break;\n\n            case 5:\n              sarRatio = [40, 33];\n              break;\n\n            case 6:\n              sarRatio = [24, 11];\n              break;\n\n            case 7:\n              sarRatio = [20, 11];\n              break;\n\n            case 8:\n              sarRatio = [32, 11];\n              break;\n\n            case 9:\n              sarRatio = [80, 33];\n              break;\n\n            case 10:\n              sarRatio = [18, 11];\n              break;\n\n            case 11:\n              sarRatio = [15, 11];\n              break;\n\n            case 12:\n              sarRatio = [64, 33];\n              break;\n\n            case 13:\n              sarRatio = [160, 99];\n              break;\n\n            case 14:\n              sarRatio = [4, 3];\n              break;\n\n            case 15:\n              sarRatio = [3, 2];\n              break;\n\n            case 16:\n              sarRatio = [2, 1];\n              break;\n\n            case 255:\n              {\n                sarRatio = [expGolombDecoder.readUnsignedByte() << 8 | expGolombDecoder.readUnsignedByte(), expGolombDecoder.readUnsignedByte() << 8 | expGolombDecoder.readUnsignedByte()];\n                break;\n              }\n          }\n\n          if (sarRatio) {\n            sarScale = sarRatio[0] / sarRatio[1];\n          }\n        }\n      }\n\n      return {\n        profileIdc: profileIdc,\n        levelIdc: levelIdc,\n        profileCompatibility: profileCompatibility,\n        width: Math.ceil(((picWidthInMbsMinus1 + 1) * 16 - frameCropLeftOffset * 2 - frameCropRightOffset * 2) * sarScale),\n        height: (2 - frameMbsOnlyFlag) * (picHeightInMapUnitsMinus1 + 1) * 16 - frameCropTopOffset * 2 - frameCropBottomOffset * 2\n      };\n    };\n  };\n\n  _H264Stream.prototype = new stream();\n  var h264 = {\n    H264Stream: _H264Stream,\n    NalByteStream: _NalByteStream\n  };\n\n  /**\n   * mux.js\n   *\n   * Copyright (c) 2016 Brightcove\n   * All rights reserved.\n   *\n   * Utilities to detect basic properties and metadata about Aac data.\n   */\n\n  var ADTS_SAMPLING_FREQUENCIES$1 = [96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, 16000, 12000, 11025, 8000, 7350];\n\n  var isLikelyAacData = function isLikelyAacData(data) {\n    if (data[0] === 'I'.charCodeAt(0) && data[1] === 'D'.charCodeAt(0) && data[2] === '3'.charCodeAt(0)) {\n      return true;\n    }\n\n    return false;\n  };\n\n  var parseSyncSafeInteger$1 = function parseSyncSafeInteger(data) {\n    return data[0] << 21 | data[1] << 14 | data[2] << 7 | data[3];\n  }; // return a percent-encoded representation of the specified byte range\n  // @see http://en.wikipedia.org/wiki/Percent-encoding\n\n\n  var percentEncode$1 = function percentEncode(bytes, start, end) {\n    var i,\n        result = '';\n\n    for (i = start; i < end; i++) {\n      result += '%' + ('00' + bytes[i].toString(16)).slice(-2);\n    }\n\n    return result;\n  }; // return the string representation of the specified byte range,\n  // interpreted as ISO-8859-1.\n\n\n  var parseIso88591$1 = function parseIso88591(bytes, start, end) {\n    return unescape(percentEncode$1(bytes, start, end)); // jshint ignore:line\n  };\n\n  var parseId3TagSize = function parseId3TagSize(header, byteIndex) {\n    var returnSize = header[byteIndex + 6] << 21 | header[byteIndex + 7] << 14 | header[byteIndex + 8] << 7 | header[byteIndex + 9],\n        flags = header[byteIndex + 5],\n        footerPresent = (flags & 16) >> 4;\n\n    if (footerPresent) {\n      return returnSize + 20;\n    }\n\n    return returnSize + 10;\n  };\n\n  var parseAdtsSize = function parseAdtsSize(header, byteIndex) {\n    var lowThree = (header[byteIndex + 5] & 0xE0) >> 5,\n        middle = header[byteIndex + 4] << 3,\n        highTwo = header[byteIndex + 3] & 0x3 << 11;\n    return highTwo | middle | lowThree;\n  };\n\n  var parseType$1 = function parseType(header, byteIndex) {\n    if (header[byteIndex] === 'I'.charCodeAt(0) && header[byteIndex + 1] === 'D'.charCodeAt(0) && header[byteIndex + 2] === '3'.charCodeAt(0)) {\n      return 'timed-metadata';\n    } else if (header[byteIndex] & 0xff === 0xff && (header[byteIndex + 1] & 0xf0) === 0xf0) {\n      return 'audio';\n    }\n\n    return null;\n  };\n\n  var parseSampleRate = function parseSampleRate(packet) {\n    var i = 0;\n\n    while (i + 5 < packet.length) {\n      if (packet[i] !== 0xFF || (packet[i + 1] & 0xF6) !== 0xF0) {\n        // If a valid header was not found,  jump one forward and attempt to\n        // find a valid ADTS header starting at the next byte\n        i++;\n        continue;\n      }\n\n      return ADTS_SAMPLING_FREQUENCIES$1[(packet[i + 2] & 0x3c) >>> 2];\n    }\n\n    return null;\n  };\n\n  var parseAacTimestamp = function parseAacTimestamp(packet) {\n    var frameStart, frameSize, frame, frameHeader; // find the start of the first frame and the end of the tag\n\n    frameStart = 10;\n\n    if (packet[5] & 0x40) {\n      // advance the frame start past the extended header\n      frameStart += 4; // header size field\n\n      frameStart += parseSyncSafeInteger$1(packet.subarray(10, 14));\n    } // parse one or more ID3 frames\n    // http://id3.org/id3v2.3.0#ID3v2_frame_overview\n\n\n    do {\n      // determine the number of bytes in this frame\n      frameSize = parseSyncSafeInteger$1(packet.subarray(frameStart + 4, frameStart + 8));\n\n      if (frameSize < 1) {\n        return null;\n      }\n\n      frameHeader = String.fromCharCode(packet[frameStart], packet[frameStart + 1], packet[frameStart + 2], packet[frameStart + 3]);\n\n      if (frameHeader === 'PRIV') {\n        frame = packet.subarray(frameStart + 10, frameStart + frameSize + 10);\n\n        for (var i = 0; i < frame.byteLength; i++) {\n          if (frame[i] === 0) {\n            var owner = parseIso88591$1(frame, 0, i);\n\n            if (owner === 'com.apple.streaming.transportStreamTimestamp') {\n              var d = frame.subarray(i + 1);\n              var size = (d[3] & 0x01) << 30 | d[4] << 22 | d[5] << 14 | d[6] << 6 | d[7] >>> 2;\n              size *= 4;\n              size += d[7] & 0x03;\n              return size;\n            }\n\n            break;\n          }\n        }\n      }\n\n      frameStart += 10; // advance past the frame header\n\n      frameStart += frameSize; // advance past the frame body\n    } while (frameStart < packet.byteLength);\n\n    return null;\n  };\n\n  var utils = {\n    isLikelyAacData: isLikelyAacData,\n    parseId3TagSize: parseId3TagSize,\n    parseAdtsSize: parseAdtsSize,\n    parseType: parseType$1,\n    parseSampleRate: parseSampleRate,\n    parseAacTimestamp: parseAacTimestamp\n  };\n\n  var _AacStream;\n  /**\n   * Splits an incoming stream of binary data into ADTS and ID3 Frames.\n   */\n\n\n  _AacStream = function AacStream() {\n    var everything = new Uint8Array(),\n        timeStamp = 0;\n\n    _AacStream.prototype.init.call(this);\n\n    this.setTimestamp = function (timestamp) {\n      timeStamp = timestamp;\n    };\n\n    this.push = function (bytes) {\n      var frameSize = 0,\n          byteIndex = 0,\n          bytesLeft,\n          chunk,\n          packet,\n          tempLength; // If there are bytes remaining from the last segment, prepend them to the\n      // bytes that were pushed in\n\n      if (everything.length) {\n        tempLength = everything.length;\n        everything = new Uint8Array(bytes.byteLength + tempLength);\n        everything.set(everything.subarray(0, tempLength));\n        everything.set(bytes, tempLength);\n      } else {\n        everything = bytes;\n      }\n\n      while (everything.length - byteIndex >= 3) {\n        if (everything[byteIndex] === 'I'.charCodeAt(0) && everything[byteIndex + 1] === 'D'.charCodeAt(0) && everything[byteIndex + 2] === '3'.charCodeAt(0)) {\n          // Exit early because we don't have enough to parse\n          // the ID3 tag header\n          if (everything.length - byteIndex < 10) {\n            break;\n          } // check framesize\n\n\n          frameSize = utils.parseId3TagSize(everything, byteIndex); // Exit early if we don't have enough in the buffer\n          // to emit a full packet\n          // Add to byteIndex to support multiple ID3 tags in sequence\n\n          if (byteIndex + frameSize > everything.length) {\n            break;\n          }\n\n          chunk = {\n            type: 'timed-metadata',\n            data: everything.subarray(byteIndex, byteIndex + frameSize)\n          };\n          this.trigger('data', chunk);\n          byteIndex += frameSize;\n          continue;\n        } else if ((everything[byteIndex] & 0xff) === 0xff && (everything[byteIndex + 1] & 0xf0) === 0xf0) {\n          // Exit early because we don't have enough to parse\n          // the ADTS frame header\n          if (everything.length - byteIndex < 7) {\n            break;\n          }\n\n          frameSize = utils.parseAdtsSize(everything, byteIndex); // Exit early if we don't have enough in the buffer\n          // to emit a full packet\n\n          if (byteIndex + frameSize > everything.length) {\n            break;\n          }\n\n          packet = {\n            type: 'audio',\n            data: everything.subarray(byteIndex, byteIndex + frameSize),\n            pts: timeStamp,\n            dts: timeStamp\n          };\n          this.trigger('data', packet);\n          byteIndex += frameSize;\n          continue;\n        }\n\n        byteIndex++;\n      }\n\n      bytesLeft = everything.length - byteIndex;\n\n      if (bytesLeft > 0) {\n        everything = everything.subarray(byteIndex);\n      } else {\n        everything = new Uint8Array();\n      }\n    };\n  };\n\n  _AacStream.prototype = new stream();\n  var aac = _AacStream;\n\n  var H264Stream = h264.H264Stream;\n  var isLikelyAacData$1 = utils.isLikelyAacData; // constants\n\n  var AUDIO_PROPERTIES = ['audioobjecttype', 'channelcount', 'samplerate', 'samplingfrequencyindex', 'samplesize'];\n  var VIDEO_PROPERTIES = ['width', 'height', 'profileIdc', 'levelIdc', 'profileCompatibility']; // object types\n\n  var _VideoSegmentStream, _AudioSegmentStream, _Transmuxer, _CoalesceStream;\n  /**\n   * Compare two arrays (even typed) for same-ness\n   */\n\n\n  var arrayEquals = function arrayEquals(a, b) {\n    var i;\n\n    if (a.length !== b.length) {\n      return false;\n    } // compare the value of each element in the array\n\n\n    for (i = 0; i < a.length; i++) {\n      if (a[i] !== b[i]) {\n        return false;\n      }\n    }\n\n    return true;\n  };\n  /**\n   * Constructs a single-track, ISO BMFF media segment from AAC data\n   * events. The output of this stream can be fed to a SourceBuffer\n   * configured with a suitable initialization segment.\n   * @param track {object} track metadata configuration\n   * @param options {object} transmuxer options object\n   * @param options.keepOriginalTimestamps {boolean} If true, keep the timestamps\n   *        in the source; false to adjust the first segment to start at 0.\n   */\n\n\n  _AudioSegmentStream = function AudioSegmentStream(track, options) {\n    var adtsFrames = [],\n        sequenceNumber = 0,\n        earliestAllowedDts = 0,\n        audioAppendStartTs = 0,\n        videoBaseMediaDecodeTime = Infinity;\n    options = options || {};\n\n    _AudioSegmentStream.prototype.init.call(this);\n\n    this.push = function (data) {\n      trackDecodeInfo.collectDtsInfo(track, data);\n\n      if (track) {\n        AUDIO_PROPERTIES.forEach(function (prop) {\n          track[prop] = data[prop];\n        });\n      } // buffer audio data until end() is called\n\n\n      adtsFrames.push(data);\n    };\n\n    this.setEarliestDts = function (earliestDts) {\n      earliestAllowedDts = earliestDts - track.timelineStartInfo.baseMediaDecodeTime;\n    };\n\n    this.setVideoBaseMediaDecodeTime = function (baseMediaDecodeTime) {\n      videoBaseMediaDecodeTime = baseMediaDecodeTime;\n    };\n\n    this.setAudioAppendStart = function (timestamp) {\n      audioAppendStartTs = timestamp;\n    };\n\n    this.flush = function () {\n      var frames, moof, mdat, boxes; // return early if no audio data has been observed\n\n      if (adtsFrames.length === 0) {\n        this.trigger('done', 'AudioSegmentStream');\n        return;\n      }\n\n      frames = audioFrameUtils.trimAdtsFramesByEarliestDts(adtsFrames, track, earliestAllowedDts);\n      track.baseMediaDecodeTime = trackDecodeInfo.calculateTrackBaseMediaDecodeTime(track, options.keepOriginalTimestamps);\n      audioFrameUtils.prefixWithSilence(track, frames, audioAppendStartTs, videoBaseMediaDecodeTime); // we have to build the index from byte locations to\n      // samples (that is, adts frames) in the audio data\n\n      track.samples = audioFrameUtils.generateSampleTable(frames); // concatenate the audio data to constuct the mdat\n\n      mdat = mp4Generator.mdat(audioFrameUtils.concatenateFrameData(frames));\n      adtsFrames = [];\n      moof = mp4Generator.moof(sequenceNumber, [track]);\n      boxes = new Uint8Array(moof.byteLength + mdat.byteLength); // bump the sequence number for next time\n\n      sequenceNumber++;\n      boxes.set(moof);\n      boxes.set(mdat, moof.byteLength);\n      trackDecodeInfo.clearDtsInfo(track);\n      this.trigger('data', {\n        track: track,\n        boxes: boxes\n      });\n      this.trigger('done', 'AudioSegmentStream');\n    };\n  };\n\n  _AudioSegmentStream.prototype = new stream();\n  /**\n   * Constructs a single-track, ISO BMFF media segment from H264 data\n   * events. The output of this stream can be fed to a SourceBuffer\n   * configured with a suitable initialization segment.\n   * @param track {object} track metadata configuration\n   * @param options {object} transmuxer options object\n   * @param options.alignGopsAtEnd {boolean} If true, start from the end of the\n   *        gopsToAlignWith list when attempting to align gop pts\n   * @param options.keepOriginalTimestamps {boolean} If true, keep the timestamps\n   *        in the source; false to adjust the first segment to start at 0.\n   */\n\n  _VideoSegmentStream = function VideoSegmentStream(track, options) {\n    var sequenceNumber = 0,\n        nalUnits = [],\n        gopsToAlignWith = [],\n        config,\n        pps;\n    options = options || {};\n\n    _VideoSegmentStream.prototype.init.call(this);\n\n    delete track.minPTS;\n    this.gopCache_ = [];\n    /**\n      * Constructs a ISO BMFF segment given H264 nalUnits\n      * @param {Object} nalUnit A data event representing a nalUnit\n      * @param {String} nalUnit.nalUnitType\n      * @param {Object} nalUnit.config Properties for a mp4 track\n      * @param {Uint8Array} nalUnit.data The nalUnit bytes\n      * @see lib/codecs/h264.js\n     **/\n\n    this.push = function (nalUnit) {\n      trackDecodeInfo.collectDtsInfo(track, nalUnit); // record the track config\n\n      if (nalUnit.nalUnitType === 'seq_parameter_set_rbsp' && !config) {\n        config = nalUnit.config;\n        track.sps = [nalUnit.data];\n        VIDEO_PROPERTIES.forEach(function (prop) {\n          track[prop] = config[prop];\n        }, this);\n      }\n\n      if (nalUnit.nalUnitType === 'pic_parameter_set_rbsp' && !pps) {\n        pps = nalUnit.data;\n        track.pps = [nalUnit.data];\n      } // buffer video until flush() is called\n\n\n      nalUnits.push(nalUnit);\n    };\n    /**\n      * Pass constructed ISO BMFF track and boxes on to the\n      * next stream in the pipeline\n     **/\n\n\n    this.flush = function () {\n      var frames, gopForFusion, gops, moof, mdat, boxes; // Throw away nalUnits at the start of the byte stream until\n      // we find the first AUD\n\n      while (nalUnits.length) {\n        if (nalUnits[0].nalUnitType === 'access_unit_delimiter_rbsp') {\n          break;\n        }\n\n        nalUnits.shift();\n      } // Return early if no video data has been observed\n\n\n      if (nalUnits.length === 0) {\n        this.resetStream_();\n        this.trigger('done', 'VideoSegmentStream');\n        return;\n      } // Organize the raw nal-units into arrays that represent\n      // higher-level constructs such as frames and gops\n      // (group-of-pictures)\n\n\n      frames = frameUtils.groupNalsIntoFrames(nalUnits);\n      gops = frameUtils.groupFramesIntoGops(frames); // If the first frame of this fragment is not a keyframe we have\n      // a problem since MSE (on Chrome) requires a leading keyframe.\n      //\n      // We have two approaches to repairing this situation:\n      // 1) GOP-FUSION:\n      //    This is where we keep track of the GOPS (group-of-pictures)\n      //    from previous fragments and attempt to find one that we can\n      //    prepend to the current fragment in order to create a valid\n      //    fragment.\n      // 2) KEYFRAME-PULLING:\n      //    Here we search for the first keyframe in the fragment and\n      //    throw away all the frames between the start of the fragment\n      //    and that keyframe. We then extend the duration and pull the\n      //    PTS of the keyframe forward so that it covers the time range\n      //    of the frames that were disposed of.\n      //\n      // #1 is far prefereable over #2 which can cause \"stuttering\" but\n      // requires more things to be just right.\n\n      if (!gops[0][0].keyFrame) {\n        // Search for a gop for fusion from our gopCache\n        gopForFusion = this.getGopForFusion_(nalUnits[0], track);\n\n        if (gopForFusion) {\n          gops.unshift(gopForFusion); // Adjust Gops' metadata to account for the inclusion of the\n          // new gop at the beginning\n\n          gops.byteLength += gopForFusion.byteLength;\n          gops.nalCount += gopForFusion.nalCount;\n          gops.pts = gopForFusion.pts;\n          gops.dts = gopForFusion.dts;\n          gops.duration += gopForFusion.duration;\n        } else {\n          // If we didn't find a candidate gop fall back to keyframe-pulling\n          gops = frameUtils.extendFirstKeyFrame(gops);\n        }\n      } // Trim gops to align with gopsToAlignWith\n\n\n      if (gopsToAlignWith.length) {\n        var alignedGops;\n\n        if (options.alignGopsAtEnd) {\n          alignedGops = this.alignGopsAtEnd_(gops);\n        } else {\n          alignedGops = this.alignGopsAtStart_(gops);\n        }\n\n        if (!alignedGops) {\n          // save all the nals in the last GOP into the gop cache\n          this.gopCache_.unshift({\n            gop: gops.pop(),\n            pps: track.pps,\n            sps: track.sps\n          }); // Keep a maximum of 6 GOPs in the cache\n\n          this.gopCache_.length = Math.min(6, this.gopCache_.length); // Clear nalUnits\n\n          nalUnits = []; // return early no gops can be aligned with desired gopsToAlignWith\n\n          this.resetStream_();\n          this.trigger('done', 'VideoSegmentStream');\n          return;\n        } // Some gops were trimmed. clear dts info so minSegmentDts and pts are correct\n        // when recalculated before sending off to CoalesceStream\n\n\n        trackDecodeInfo.clearDtsInfo(track);\n        gops = alignedGops;\n      }\n\n      trackDecodeInfo.collectDtsInfo(track, gops); // First, we have to build the index from byte locations to\n      // samples (that is, frames) in the video data\n\n      track.samples = frameUtils.generateSampleTable(gops); // Concatenate the video data and construct the mdat\n\n      mdat = mp4Generator.mdat(frameUtils.concatenateNalData(gops));\n      track.baseMediaDecodeTime = trackDecodeInfo.calculateTrackBaseMediaDecodeTime(track, options.keepOriginalTimestamps);\n      this.trigger('processedGopsInfo', gops.map(function (gop) {\n        return {\n          pts: gop.pts,\n          dts: gop.dts,\n          byteLength: gop.byteLength\n        };\n      })); // save all the nals in the last GOP into the gop cache\n\n      this.gopCache_.unshift({\n        gop: gops.pop(),\n        pps: track.pps,\n        sps: track.sps\n      }); // Keep a maximum of 6 GOPs in the cache\n\n      this.gopCache_.length = Math.min(6, this.gopCache_.length); // Clear nalUnits\n\n      nalUnits = [];\n      this.trigger('baseMediaDecodeTime', track.baseMediaDecodeTime);\n      this.trigger('timelineStartInfo', track.timelineStartInfo);\n      moof = mp4Generator.moof(sequenceNumber, [track]); // it would be great to allocate this array up front instead of\n      // throwing away hundreds of media segment fragments\n\n      boxes = new Uint8Array(moof.byteLength + mdat.byteLength); // Bump the sequence number for next time\n\n      sequenceNumber++;\n      boxes.set(moof);\n      boxes.set(mdat, moof.byteLength);\n      this.trigger('data', {\n        track: track,\n        boxes: boxes\n      });\n      this.resetStream_(); // Continue with the flush process now\n\n      this.trigger('done', 'VideoSegmentStream');\n    };\n\n    this.resetStream_ = function () {\n      trackDecodeInfo.clearDtsInfo(track); // reset config and pps because they may differ across segments\n      // for instance, when we are rendition switching\n\n      config = undefined;\n      pps = undefined;\n    }; // Search for a candidate Gop for gop-fusion from the gop cache and\n    // return it or return null if no good candidate was found\n\n\n    this.getGopForFusion_ = function (nalUnit) {\n      var halfSecond = 45000,\n          // Half-a-second in a 90khz clock\n      allowableOverlap = 10000,\n          // About 3 frames @ 30fps\n      nearestDistance = Infinity,\n          dtsDistance,\n          nearestGopObj,\n          currentGop,\n          currentGopObj,\n          i; // Search for the GOP nearest to the beginning of this nal unit\n\n      for (i = 0; i < this.gopCache_.length; i++) {\n        currentGopObj = this.gopCache_[i];\n        currentGop = currentGopObj.gop; // Reject Gops with different SPS or PPS\n\n        if (!(track.pps && arrayEquals(track.pps[0], currentGopObj.pps[0])) || !(track.sps && arrayEquals(track.sps[0], currentGopObj.sps[0]))) {\n          continue;\n        } // Reject Gops that would require a negative baseMediaDecodeTime\n\n\n        if (currentGop.dts < track.timelineStartInfo.dts) {\n          continue;\n        } // The distance between the end of the gop and the start of the nalUnit\n\n\n        dtsDistance = nalUnit.dts - currentGop.dts - currentGop.duration; // Only consider GOPS that start before the nal unit and end within\n        // a half-second of the nal unit\n\n        if (dtsDistance >= -allowableOverlap && dtsDistance <= halfSecond) {\n          // Always use the closest GOP we found if there is more than\n          // one candidate\n          if (!nearestGopObj || nearestDistance > dtsDistance) {\n            nearestGopObj = currentGopObj;\n            nearestDistance = dtsDistance;\n          }\n        }\n      }\n\n      if (nearestGopObj) {\n        return nearestGopObj.gop;\n      }\n\n      return null;\n    }; // trim gop list to the first gop found that has a matching pts with a gop in the list\n    // of gopsToAlignWith starting from the START of the list\n\n\n    this.alignGopsAtStart_ = function (gops) {\n      var alignIndex, gopIndex, align, gop, byteLength, nalCount, duration, alignedGops;\n      byteLength = gops.byteLength;\n      nalCount = gops.nalCount;\n      duration = gops.duration;\n      alignIndex = gopIndex = 0;\n\n      while (alignIndex < gopsToAlignWith.length && gopIndex < gops.length) {\n        align = gopsToAlignWith[alignIndex];\n        gop = gops[gopIndex];\n\n        if (align.pts === gop.pts) {\n          break;\n        }\n\n        if (gop.pts > align.pts) {\n          // this current gop starts after the current gop we want to align on, so increment\n          // align index\n          alignIndex++;\n          continue;\n        } // current gop starts before the current gop we want to align on. so increment gop\n        // index\n\n\n        gopIndex++;\n        byteLength -= gop.byteLength;\n        nalCount -= gop.nalCount;\n        duration -= gop.duration;\n      }\n\n      if (gopIndex === 0) {\n        // no gops to trim\n        return gops;\n      }\n\n      if (gopIndex === gops.length) {\n        // all gops trimmed, skip appending all gops\n        return null;\n      }\n\n      alignedGops = gops.slice(gopIndex);\n      alignedGops.byteLength = byteLength;\n      alignedGops.duration = duration;\n      alignedGops.nalCount = nalCount;\n      alignedGops.pts = alignedGops[0].pts;\n      alignedGops.dts = alignedGops[0].dts;\n      return alignedGops;\n    }; // trim gop list to the first gop found that has a matching pts with a gop in the list\n    // of gopsToAlignWith starting from the END of the list\n\n\n    this.alignGopsAtEnd_ = function (gops) {\n      var alignIndex, gopIndex, align, gop, alignEndIndex, matchFound;\n      alignIndex = gopsToAlignWith.length - 1;\n      gopIndex = gops.length - 1;\n      alignEndIndex = null;\n      matchFound = false;\n\n      while (alignIndex >= 0 && gopIndex >= 0) {\n        align = gopsToAlignWith[alignIndex];\n        gop = gops[gopIndex];\n\n        if (align.pts === gop.pts) {\n          matchFound = true;\n          break;\n        }\n\n        if (align.pts > gop.pts) {\n          alignIndex--;\n          continue;\n        }\n\n        if (alignIndex === gopsToAlignWith.length - 1) {\n          // gop.pts is greater than the last alignment candidate. If no match is found\n          // by the end of this loop, we still want to append gops that come after this\n          // point\n          alignEndIndex = gopIndex;\n        }\n\n        gopIndex--;\n      }\n\n      if (!matchFound && alignEndIndex === null) {\n        return null;\n      }\n\n      var trimIndex;\n\n      if (matchFound) {\n        trimIndex = gopIndex;\n      } else {\n        trimIndex = alignEndIndex;\n      }\n\n      if (trimIndex === 0) {\n        return gops;\n      }\n\n      var alignedGops = gops.slice(trimIndex);\n      var metadata = alignedGops.reduce(function (total, gop) {\n        total.byteLength += gop.byteLength;\n        total.duration += gop.duration;\n        total.nalCount += gop.nalCount;\n        return total;\n      }, {\n        byteLength: 0,\n        duration: 0,\n        nalCount: 0\n      });\n      alignedGops.byteLength = metadata.byteLength;\n      alignedGops.duration = metadata.duration;\n      alignedGops.nalCount = metadata.nalCount;\n      alignedGops.pts = alignedGops[0].pts;\n      alignedGops.dts = alignedGops[0].dts;\n      return alignedGops;\n    };\n\n    this.alignGopsWith = function (newGopsToAlignWith) {\n      gopsToAlignWith = newGopsToAlignWith;\n    };\n  };\n\n  _VideoSegmentStream.prototype = new stream();\n  /**\n   * A Stream that can combine multiple streams (ie. audio & video)\n   * into a single output segment for MSE. Also supports audio-only\n   * and video-only streams.\n   * @param options {object} transmuxer options object\n   * @param options.keepOriginalTimestamps {boolean} If true, keep the timestamps\n   *        in the source; false to adjust the first segment to start at media timeline start.\n   */\n\n  _CoalesceStream = function CoalesceStream(options, metadataStream) {\n    // Number of Tracks per output segment\n    // If greater than 1, we combine multiple\n    // tracks into a single segment\n    this.numberOfTracks = 0;\n    this.metadataStream = metadataStream;\n    options = options || {};\n\n    if (typeof options.remux !== 'undefined') {\n      this.remuxTracks = !!options.remux;\n    } else {\n      this.remuxTracks = true;\n    }\n\n    if (typeof options.keepOriginalTimestamps === 'boolean') {\n      this.keepOriginalTimestamps = options.keepOriginalTimestamps;\n    }\n\n    this.pendingTracks = [];\n    this.videoTrack = null;\n    this.pendingBoxes = [];\n    this.pendingCaptions = [];\n    this.pendingMetadata = [];\n    this.pendingBytes = 0;\n    this.emittedTracks = 0;\n\n    _CoalesceStream.prototype.init.call(this); // Take output from multiple\n\n\n    this.push = function (output) {\n      // buffer incoming captions until the associated video segment\n      // finishes\n      if (output.text) {\n        return this.pendingCaptions.push(output);\n      } // buffer incoming id3 tags until the final flush\n\n\n      if (output.frames) {\n        return this.pendingMetadata.push(output);\n      } // Add this track to the list of pending tracks and store\n      // important information required for the construction of\n      // the final segment\n\n\n      this.pendingTracks.push(output.track);\n      this.pendingBoxes.push(output.boxes);\n      this.pendingBytes += output.boxes.byteLength;\n\n      if (output.track.type === 'video') {\n        this.videoTrack = output.track;\n      }\n\n      if (output.track.type === 'audio') {\n        this.audioTrack = output.track;\n      }\n    };\n  };\n\n  _CoalesceStream.prototype = new stream();\n\n  _CoalesceStream.prototype.flush = function (flushSource) {\n    var offset = 0,\n        event = {\n      captions: [],\n      captionStreams: {},\n      metadata: [],\n      info: {}\n    },\n        caption,\n        id3,\n        initSegment,\n        timelineStartPts = 0,\n        i;\n\n    if (this.pendingTracks.length < this.numberOfTracks) {\n      if (flushSource !== 'VideoSegmentStream' && flushSource !== 'AudioSegmentStream') {\n        // Return because we haven't received a flush from a data-generating\n        // portion of the segment (meaning that we have only recieved meta-data\n        // or captions.)\n        return;\n      } else if (this.remuxTracks) {\n        // Return until we have enough tracks from the pipeline to remux (if we\n        // are remuxing audio and video into a single MP4)\n        return;\n      } else if (this.pendingTracks.length === 0) {\n        // In the case where we receive a flush without any data having been\n        // received we consider it an emitted track for the purposes of coalescing\n        // `done` events.\n        // We do this for the case where there is an audio and video track in the\n        // segment but no audio data. (seen in several playlists with alternate\n        // audio tracks and no audio present in the main TS segments.)\n        this.emittedTracks++;\n\n        if (this.emittedTracks >= this.numberOfTracks) {\n          this.trigger('done');\n          this.emittedTracks = 0;\n        }\n\n        return;\n      }\n    }\n\n    if (this.videoTrack) {\n      timelineStartPts = this.videoTrack.timelineStartInfo.pts;\n      VIDEO_PROPERTIES.forEach(function (prop) {\n        event.info[prop] = this.videoTrack[prop];\n      }, this);\n    } else if (this.audioTrack) {\n      timelineStartPts = this.audioTrack.timelineStartInfo.pts;\n      AUDIO_PROPERTIES.forEach(function (prop) {\n        event.info[prop] = this.audioTrack[prop];\n      }, this);\n    }\n\n    if (this.pendingTracks.length === 1) {\n      event.type = this.pendingTracks[0].type;\n    } else {\n      event.type = 'combined';\n    }\n\n    this.emittedTracks += this.pendingTracks.length;\n    initSegment = mp4Generator.initSegment(this.pendingTracks); // Create a new typed array to hold the init segment\n\n    event.initSegment = new Uint8Array(initSegment.byteLength); // Create an init segment containing a moov\n    // and track definitions\n\n    event.initSegment.set(initSegment); // Create a new typed array to hold the moof+mdats\n\n    event.data = new Uint8Array(this.pendingBytes); // Append each moof+mdat (one per track) together\n\n    for (i = 0; i < this.pendingBoxes.length; i++) {\n      event.data.set(this.pendingBoxes[i], offset);\n      offset += this.pendingBoxes[i].byteLength;\n    } // Translate caption PTS times into second offsets to match the\n    // video timeline for the segment, and add track info\n\n\n    for (i = 0; i < this.pendingCaptions.length; i++) {\n      caption = this.pendingCaptions[i];\n      caption.startTime = caption.startPts;\n\n      if (!this.keepOriginalTimestamps) {\n        caption.startTime -= timelineStartPts;\n      }\n\n      caption.startTime /= 90e3;\n      caption.endTime = caption.endPts;\n\n      if (!this.keepOriginalTimestamps) {\n        caption.endTime -= timelineStartPts;\n      }\n\n      caption.endTime /= 90e3;\n      event.captionStreams[caption.stream] = true;\n      event.captions.push(caption);\n    } // Translate ID3 frame PTS times into second offsets to match the\n    // video timeline for the segment\n\n\n    for (i = 0; i < this.pendingMetadata.length; i++) {\n      id3 = this.pendingMetadata[i];\n      id3.cueTime = id3.pts;\n\n      if (!this.keepOriginalTimestamps) {\n        id3.cueTime -= timelineStartPts;\n      }\n\n      id3.cueTime /= 90e3;\n      event.metadata.push(id3);\n    } // We add this to every single emitted segment even though we only need\n    // it for the first\n\n\n    event.metadata.dispatchType = this.metadataStream.dispatchType; // Reset stream state\n\n    this.pendingTracks.length = 0;\n    this.videoTrack = null;\n    this.pendingBoxes.length = 0;\n    this.pendingCaptions.length = 0;\n    this.pendingBytes = 0;\n    this.pendingMetadata.length = 0; // Emit the built segment\n\n    this.trigger('data', event); // Only emit `done` if all tracks have been flushed and emitted\n\n    if (this.emittedTracks >= this.numberOfTracks) {\n      this.trigger('done');\n      this.emittedTracks = 0;\n    }\n  };\n  /**\n   * A Stream that expects MP2T binary data as input and produces\n   * corresponding media segments, suitable for use with Media Source\n   * Extension (MSE) implementations that support the ISO BMFF byte\n   * stream format, like Chrome.\n   */\n\n\n  _Transmuxer = function Transmuxer(options) {\n    var self = this,\n        hasFlushed = true,\n        videoTrack,\n        audioTrack;\n\n    _Transmuxer.prototype.init.call(this);\n\n    options = options || {};\n    this.baseMediaDecodeTime = options.baseMediaDecodeTime || 0;\n    this.transmuxPipeline_ = {};\n\n    this.setupAacPipeline = function () {\n      var pipeline = {};\n      this.transmuxPipeline_ = pipeline;\n      pipeline.type = 'aac';\n      pipeline.metadataStream = new m2ts_1.MetadataStream(); // set up the parsing pipeline\n\n      pipeline.aacStream = new aac();\n      pipeline.audioTimestampRolloverStream = new m2ts_1.TimestampRolloverStream('audio');\n      pipeline.timedMetadataTimestampRolloverStream = new m2ts_1.TimestampRolloverStream('timed-metadata');\n      pipeline.adtsStream = new adts();\n      pipeline.coalesceStream = new _CoalesceStream(options, pipeline.metadataStream);\n      pipeline.headOfPipeline = pipeline.aacStream;\n      pipeline.aacStream.pipe(pipeline.audioTimestampRolloverStream).pipe(pipeline.adtsStream);\n      pipeline.aacStream.pipe(pipeline.timedMetadataTimestampRolloverStream).pipe(pipeline.metadataStream).pipe(pipeline.coalesceStream);\n      pipeline.metadataStream.on('timestamp', function (frame) {\n        pipeline.aacStream.setTimestamp(frame.timeStamp);\n      });\n      pipeline.aacStream.on('data', function (data) {\n        if (data.type === 'timed-metadata' && !pipeline.audioSegmentStream) {\n          audioTrack = audioTrack || {\n            timelineStartInfo: {\n              baseMediaDecodeTime: self.baseMediaDecodeTime\n            },\n            codec: 'adts',\n            type: 'audio'\n          }; // hook up the audio segment stream to the first track with aac data\n\n          pipeline.coalesceStream.numberOfTracks++;\n          pipeline.audioSegmentStream = new _AudioSegmentStream(audioTrack, options); // Set up the final part of the audio pipeline\n\n          pipeline.adtsStream.pipe(pipeline.audioSegmentStream).pipe(pipeline.coalesceStream);\n        }\n      }); // Re-emit any data coming from the coalesce stream to the outside world\n\n      pipeline.coalesceStream.on('data', this.trigger.bind(this, 'data')); // Let the consumer know we have finished flushing the entire pipeline\n\n      pipeline.coalesceStream.on('done', this.trigger.bind(this, 'done'));\n    };\n\n    this.setupTsPipeline = function () {\n      var pipeline = {};\n      this.transmuxPipeline_ = pipeline;\n      pipeline.type = 'ts';\n      pipeline.metadataStream = new m2ts_1.MetadataStream(); // set up the parsing pipeline\n\n      pipeline.packetStream = new m2ts_1.TransportPacketStream();\n      pipeline.parseStream = new m2ts_1.TransportParseStream();\n      pipeline.elementaryStream = new m2ts_1.ElementaryStream();\n      pipeline.videoTimestampRolloverStream = new m2ts_1.TimestampRolloverStream('video');\n      pipeline.audioTimestampRolloverStream = new m2ts_1.TimestampRolloverStream('audio');\n      pipeline.timedMetadataTimestampRolloverStream = new m2ts_1.TimestampRolloverStream('timed-metadata');\n      pipeline.adtsStream = new adts();\n      pipeline.h264Stream = new H264Stream();\n      pipeline.captionStream = new m2ts_1.CaptionStream();\n      pipeline.coalesceStream = new _CoalesceStream(options, pipeline.metadataStream);\n      pipeline.headOfPipeline = pipeline.packetStream; // disassemble MPEG2-TS packets into elementary streams\n\n      pipeline.packetStream.pipe(pipeline.parseStream).pipe(pipeline.elementaryStream); // !!THIS ORDER IS IMPORTANT!!\n      // demux the streams\n\n      pipeline.elementaryStream.pipe(pipeline.videoTimestampRolloverStream).pipe(pipeline.h264Stream);\n      pipeline.elementaryStream.pipe(pipeline.audioTimestampRolloverStream).pipe(pipeline.adtsStream);\n      pipeline.elementaryStream.pipe(pipeline.timedMetadataTimestampRolloverStream).pipe(pipeline.metadataStream).pipe(pipeline.coalesceStream); // Hook up CEA-608/708 caption stream\n\n      pipeline.h264Stream.pipe(pipeline.captionStream).pipe(pipeline.coalesceStream);\n      pipeline.elementaryStream.on('data', function (data) {\n        var i;\n\n        if (data.type === 'metadata') {\n          i = data.tracks.length; // scan the tracks listed in the metadata\n\n          while (i--) {\n            if (!videoTrack && data.tracks[i].type === 'video') {\n              videoTrack = data.tracks[i];\n              videoTrack.timelineStartInfo.baseMediaDecodeTime = self.baseMediaDecodeTime;\n            } else if (!audioTrack && data.tracks[i].type === 'audio') {\n              audioTrack = data.tracks[i];\n              audioTrack.timelineStartInfo.baseMediaDecodeTime = self.baseMediaDecodeTime;\n            }\n          } // hook up the video segment stream to the first track with h264 data\n\n\n          if (videoTrack && !pipeline.videoSegmentStream) {\n            pipeline.coalesceStream.numberOfTracks++;\n            pipeline.videoSegmentStream = new _VideoSegmentStream(videoTrack, options);\n            pipeline.videoSegmentStream.on('timelineStartInfo', function (timelineStartInfo) {\n              // When video emits timelineStartInfo data after a flush, we forward that\n              // info to the AudioSegmentStream, if it exists, because video timeline\n              // data takes precedence.\n              if (audioTrack) {\n                audioTrack.timelineStartInfo = timelineStartInfo; // On the first segment we trim AAC frames that exist before the\n                // very earliest DTS we have seen in video because Chrome will\n                // interpret any video track with a baseMediaDecodeTime that is\n                // non-zero as a gap.\n\n                pipeline.audioSegmentStream.setEarliestDts(timelineStartInfo.dts);\n              }\n            });\n            pipeline.videoSegmentStream.on('processedGopsInfo', self.trigger.bind(self, 'gopInfo'));\n            pipeline.videoSegmentStream.on('baseMediaDecodeTime', function (baseMediaDecodeTime) {\n              if (audioTrack) {\n                pipeline.audioSegmentStream.setVideoBaseMediaDecodeTime(baseMediaDecodeTime);\n              }\n            }); // Set up the final part of the video pipeline\n\n            pipeline.h264Stream.pipe(pipeline.videoSegmentStream).pipe(pipeline.coalesceStream);\n          }\n\n          if (audioTrack && !pipeline.audioSegmentStream) {\n            // hook up the audio segment stream to the first track with aac data\n            pipeline.coalesceStream.numberOfTracks++;\n            pipeline.audioSegmentStream = new _AudioSegmentStream(audioTrack, options); // Set up the final part of the audio pipeline\n\n            pipeline.adtsStream.pipe(pipeline.audioSegmentStream).pipe(pipeline.coalesceStream);\n          }\n        }\n      }); // Re-emit any data coming from the coalesce stream to the outside world\n\n      pipeline.coalesceStream.on('data', this.trigger.bind(this, 'data')); // Let the consumer know we have finished flushing the entire pipeline\n\n      pipeline.coalesceStream.on('done', this.trigger.bind(this, 'done'));\n    }; // hook up the segment streams once track metadata is delivered\n\n\n    this.setBaseMediaDecodeTime = function (baseMediaDecodeTime) {\n      var pipeline = this.transmuxPipeline_;\n\n      if (!options.keepOriginalTimestamps) {\n        this.baseMediaDecodeTime = baseMediaDecodeTime;\n      }\n\n      if (audioTrack) {\n        audioTrack.timelineStartInfo.dts = undefined;\n        audioTrack.timelineStartInfo.pts = undefined;\n        trackDecodeInfo.clearDtsInfo(audioTrack);\n\n        if (!options.keepOriginalTimestamps) {\n          audioTrack.timelineStartInfo.baseMediaDecodeTime = baseMediaDecodeTime;\n        }\n\n        if (pipeline.audioTimestampRolloverStream) {\n          pipeline.audioTimestampRolloverStream.discontinuity();\n        }\n      }\n\n      if (videoTrack) {\n        if (pipeline.videoSegmentStream) {\n          pipeline.videoSegmentStream.gopCache_ = [];\n          pipeline.videoTimestampRolloverStream.discontinuity();\n        }\n\n        videoTrack.timelineStartInfo.dts = undefined;\n        videoTrack.timelineStartInfo.pts = undefined;\n        trackDecodeInfo.clearDtsInfo(videoTrack);\n        pipeline.captionStream.reset();\n\n        if (!options.keepOriginalTimestamps) {\n          videoTrack.timelineStartInfo.baseMediaDecodeTime = baseMediaDecodeTime;\n        }\n      }\n\n      if (pipeline.timedMetadataTimestampRolloverStream) {\n        pipeline.timedMetadataTimestampRolloverStream.discontinuity();\n      }\n    };\n\n    this.setAudioAppendStart = function (timestamp) {\n      if (audioTrack) {\n        this.transmuxPipeline_.audioSegmentStream.setAudioAppendStart(timestamp);\n      }\n    };\n\n    this.alignGopsWith = function (gopsToAlignWith) {\n      if (videoTrack && this.transmuxPipeline_.videoSegmentStream) {\n        this.transmuxPipeline_.videoSegmentStream.alignGopsWith(gopsToAlignWith);\n      }\n    }; // feed incoming data to the front of the parsing pipeline\n\n\n    this.push = function (data) {\n      if (hasFlushed) {\n        var isAac = isLikelyAacData$1(data);\n\n        if (isAac && this.transmuxPipeline_.type !== 'aac') {\n          this.setupAacPipeline();\n        } else if (!isAac && this.transmuxPipeline_.type !== 'ts') {\n          this.setupTsPipeline();\n        }\n\n        hasFlushed = false;\n      }\n\n      this.transmuxPipeline_.headOfPipeline.push(data);\n    }; // flush any buffered data\n\n\n    this.flush = function () {\n      hasFlushed = true; // Start at the top of the pipeline and flush all pending work\n\n      this.transmuxPipeline_.headOfPipeline.flush();\n    }; // Caption data has to be reset when seeking outside buffered range\n\n\n    this.resetCaptions = function () {\n      if (this.transmuxPipeline_.captionStream) {\n        this.transmuxPipeline_.captionStream.reset();\n      }\n    };\n  };\n\n  _Transmuxer.prototype = new stream();\n  var transmuxer = {\n    Transmuxer: _Transmuxer,\n    VideoSegmentStream: _VideoSegmentStream,\n    AudioSegmentStream: _AudioSegmentStream,\n    AUDIO_PROPERTIES: AUDIO_PROPERTIES,\n    VIDEO_PROPERTIES: VIDEO_PROPERTIES\n  };\n\n  var inspectMp4,\n      _textifyMp,\n      parseType$2 = probe.parseType,\n      parseMp4Date = function parseMp4Date(seconds) {\n    return new Date(seconds * 1000 - 2082844800000);\n  },\n      parseSampleFlags = function parseSampleFlags(flags) {\n    return {\n      isLeading: (flags[0] & 0x0c) >>> 2,\n      dependsOn: flags[0] & 0x03,\n      isDependedOn: (flags[1] & 0xc0) >>> 6,\n      hasRedundancy: (flags[1] & 0x30) >>> 4,\n      paddingValue: (flags[1] & 0x0e) >>> 1,\n      isNonSyncSample: flags[1] & 0x01,\n      degradationPriority: flags[2] << 8 | flags[3]\n    };\n  },\n      nalParse = function nalParse(avcStream) {\n    var avcView = new DataView(avcStream.buffer, avcStream.byteOffset, avcStream.byteLength),\n        result = [],\n        i,\n        length;\n\n    for (i = 0; i + 4 < avcStream.length; i += length) {\n      length = avcView.getUint32(i);\n      i += 4; // bail if this doesn't appear to be an H264 stream\n\n      if (length <= 0) {\n        result.push('<span style=\\'color:red;\\'>MALFORMED DATA</span>');\n        continue;\n      }\n\n      switch (avcStream[i] & 0x1F) {\n        case 0x01:\n          result.push('slice_layer_without_partitioning_rbsp');\n          break;\n\n        case 0x05:\n          result.push('slice_layer_without_partitioning_rbsp_idr');\n          break;\n\n        case 0x06:\n          result.push('sei_rbsp');\n          break;\n\n        case 0x07:\n          result.push('seq_parameter_set_rbsp');\n          break;\n\n        case 0x08:\n          result.push('pic_parameter_set_rbsp');\n          break;\n\n        case 0x09:\n          result.push('access_unit_delimiter_rbsp');\n          break;\n\n        default:\n          result.push('UNKNOWN NAL - ' + avcStream[i] & 0x1F);\n          break;\n      }\n    }\n\n    return result;\n  },\n      // registry of handlers for individual mp4 box types\n  parse$1 = {\n    // codingname, not a first-class box type. stsd entries share the\n    // same format as real boxes so the parsing infrastructure can be\n    // shared\n    avc1: function avc1(data) {\n      var view = new DataView(data.buffer, data.byteOffset, data.byteLength);\n      return {\n        dataReferenceIndex: view.getUint16(6),\n        width: view.getUint16(24),\n        height: view.getUint16(26),\n        horizresolution: view.getUint16(28) + view.getUint16(30) / 16,\n        vertresolution: view.getUint16(32) + view.getUint16(34) / 16,\n        frameCount: view.getUint16(40),\n        depth: view.getUint16(74),\n        config: inspectMp4(data.subarray(78, data.byteLength))\n      };\n    },\n    avcC: function avcC(data) {\n      var view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n          result = {\n        configurationVersion: data[0],\n        avcProfileIndication: data[1],\n        profileCompatibility: data[2],\n        avcLevelIndication: data[3],\n        lengthSizeMinusOne: data[4] & 0x03,\n        sps: [],\n        pps: []\n      },\n          numOfSequenceParameterSets = data[5] & 0x1f,\n          numOfPictureParameterSets,\n          nalSize,\n          offset,\n          i; // iterate past any SPSs\n\n      offset = 6;\n\n      for (i = 0; i < numOfSequenceParameterSets; i++) {\n        nalSize = view.getUint16(offset);\n        offset += 2;\n        result.sps.push(new Uint8Array(data.subarray(offset, offset + nalSize)));\n        offset += nalSize;\n      } // iterate past any PPSs\n\n\n      numOfPictureParameterSets = data[offset];\n      offset++;\n\n      for (i = 0; i < numOfPictureParameterSets; i++) {\n        nalSize = view.getUint16(offset);\n        offset += 2;\n        result.pps.push(new Uint8Array(data.subarray(offset, offset + nalSize)));\n        offset += nalSize;\n      }\n\n      return result;\n    },\n    btrt: function btrt(data) {\n      var view = new DataView(data.buffer, data.byteOffset, data.byteLength);\n      return {\n        bufferSizeDB: view.getUint32(0),\n        maxBitrate: view.getUint32(4),\n        avgBitrate: view.getUint32(8)\n      };\n    },\n    esds: function esds(data) {\n      return {\n        version: data[0],\n        flags: new Uint8Array(data.subarray(1, 4)),\n        esId: data[6] << 8 | data[7],\n        streamPriority: data[8] & 0x1f,\n        decoderConfig: {\n          objectProfileIndication: data[11],\n          streamType: data[12] >>> 2 & 0x3f,\n          bufferSize: data[13] << 16 | data[14] << 8 | data[15],\n          maxBitrate: data[16] << 24 | data[17] << 16 | data[18] << 8 | data[19],\n          avgBitrate: data[20] << 24 | data[21] << 16 | data[22] << 8 | data[23],\n          decoderConfigDescriptor: {\n            tag: data[24],\n            length: data[25],\n            audioObjectType: data[26] >>> 3 & 0x1f,\n            samplingFrequencyIndex: (data[26] & 0x07) << 1 | data[27] >>> 7 & 0x01,\n            channelConfiguration: data[27] >>> 3 & 0x0f\n          }\n        }\n      };\n    },\n    ftyp: function ftyp(data) {\n      var view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n          result = {\n        majorBrand: parseType$2(data.subarray(0, 4)),\n        minorVersion: view.getUint32(4),\n        compatibleBrands: []\n      },\n          i = 8;\n\n      while (i < data.byteLength) {\n        result.compatibleBrands.push(parseType$2(data.subarray(i, i + 4)));\n        i += 4;\n      }\n\n      return result;\n    },\n    dinf: function dinf(data) {\n      return {\n        boxes: inspectMp4(data)\n      };\n    },\n    dref: function dref(data) {\n      return {\n        version: data[0],\n        flags: new Uint8Array(data.subarray(1, 4)),\n        dataReferences: inspectMp4(data.subarray(8))\n      };\n    },\n    hdlr: function hdlr(data) {\n      var view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n          result = {\n        version: view.getUint8(0),\n        flags: new Uint8Array(data.subarray(1, 4)),\n        handlerType: parseType$2(data.subarray(8, 12)),\n        name: ''\n      },\n          i = 8; // parse out the name field\n\n      for (i = 24; i < data.byteLength; i++) {\n        if (data[i] === 0x00) {\n          // the name field is null-terminated\n          i++;\n          break;\n        }\n\n        result.name += String.fromCharCode(data[i]);\n      } // decode UTF-8 to javascript's internal representation\n      // see http://ecmanaut.blogspot.com/2006/07/encoding-decoding-utf8-in-javascript.html\n\n\n      result.name = decodeURIComponent(escape(result.name));\n      return result;\n    },\n    mdat: function mdat(data) {\n      return {\n        byteLength: data.byteLength,\n        nals: nalParse(data)\n      };\n    },\n    mdhd: function mdhd(data) {\n      var view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n          i = 4,\n          language,\n          result = {\n        version: view.getUint8(0),\n        flags: new Uint8Array(data.subarray(1, 4)),\n        language: ''\n      };\n\n      if (result.version === 1) {\n        i += 4;\n        result.creationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes\n\n        i += 8;\n        result.modificationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes\n\n        i += 4;\n        result.timescale = view.getUint32(i);\n        i += 8;\n        result.duration = view.getUint32(i); // truncating top 4 bytes\n      } else {\n        result.creationTime = parseMp4Date(view.getUint32(i));\n        i += 4;\n        result.modificationTime = parseMp4Date(view.getUint32(i));\n        i += 4;\n        result.timescale = view.getUint32(i);\n        i += 4;\n        result.duration = view.getUint32(i);\n      }\n\n      i += 4; // language is stored as an ISO-639-2/T code in an array of three 5-bit fields\n      // each field is the packed difference between its ASCII value and 0x60\n\n      language = view.getUint16(i);\n      result.language += String.fromCharCode((language >> 10) + 0x60);\n      result.language += String.fromCharCode(((language & 0x03e0) >> 5) + 0x60);\n      result.language += String.fromCharCode((language & 0x1f) + 0x60);\n      return result;\n    },\n    mdia: function mdia(data) {\n      return {\n        boxes: inspectMp4(data)\n      };\n    },\n    mfhd: function mfhd(data) {\n      return {\n        version: data[0],\n        flags: new Uint8Array(data.subarray(1, 4)),\n        sequenceNumber: data[4] << 24 | data[5] << 16 | data[6] << 8 | data[7]\n      };\n    },\n    minf: function minf(data) {\n      return {\n        boxes: inspectMp4(data)\n      };\n    },\n    // codingname, not a first-class box type. stsd entries share the\n    // same format as real boxes so the parsing infrastructure can be\n    // shared\n    mp4a: function mp4a(data) {\n      var view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n          result = {\n        // 6 bytes reserved\n        dataReferenceIndex: view.getUint16(6),\n        // 4 + 4 bytes reserved\n        channelcount: view.getUint16(16),\n        samplesize: view.getUint16(18),\n        // 2 bytes pre_defined\n        // 2 bytes reserved\n        samplerate: view.getUint16(24) + view.getUint16(26) / 65536\n      }; // if there are more bytes to process, assume this is an ISO/IEC\n      // 14496-14 MP4AudioSampleEntry and parse the ESDBox\n\n      if (data.byteLength > 28) {\n        result.streamDescriptor = inspectMp4(data.subarray(28))[0];\n      }\n\n      return result;\n    },\n    moof: function moof(data) {\n      return {\n        boxes: inspectMp4(data)\n      };\n    },\n    moov: function moov(data) {\n      return {\n        boxes: inspectMp4(data)\n      };\n    },\n    mvex: function mvex(data) {\n      return {\n        boxes: inspectMp4(data)\n      };\n    },\n    mvhd: function mvhd(data) {\n      var view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n          i = 4,\n          result = {\n        version: view.getUint8(0),\n        flags: new Uint8Array(data.subarray(1, 4))\n      };\n\n      if (result.version === 1) {\n        i += 4;\n        result.creationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes\n\n        i += 8;\n        result.modificationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes\n\n        i += 4;\n        result.timescale = view.getUint32(i);\n        i += 8;\n        result.duration = view.getUint32(i); // truncating top 4 bytes\n      } else {\n        result.creationTime = parseMp4Date(view.getUint32(i));\n        i += 4;\n        result.modificationTime = parseMp4Date(view.getUint32(i));\n        i += 4;\n        result.timescale = view.getUint32(i);\n        i += 4;\n        result.duration = view.getUint32(i);\n      }\n\n      i += 4; // convert fixed-point, base 16 back to a number\n\n      result.rate = view.getUint16(i) + view.getUint16(i + 2) / 16;\n      i += 4;\n      result.volume = view.getUint8(i) + view.getUint8(i + 1) / 8;\n      i += 2;\n      i += 2;\n      i += 2 * 4;\n      result.matrix = new Uint32Array(data.subarray(i, i + 9 * 4));\n      i += 9 * 4;\n      i += 6 * 4;\n      result.nextTrackId = view.getUint32(i);\n      return result;\n    },\n    pdin: function pdin(data) {\n      var view = new DataView(data.buffer, data.byteOffset, data.byteLength);\n      return {\n        version: view.getUint8(0),\n        flags: new Uint8Array(data.subarray(1, 4)),\n        rate: view.getUint32(4),\n        initialDelay: view.getUint32(8)\n      };\n    },\n    sdtp: function sdtp(data) {\n      var result = {\n        version: data[0],\n        flags: new Uint8Array(data.subarray(1, 4)),\n        samples: []\n      },\n          i;\n\n      for (i = 4; i < data.byteLength; i++) {\n        result.samples.push({\n          dependsOn: (data[i] & 0x30) >> 4,\n          isDependedOn: (data[i] & 0x0c) >> 2,\n          hasRedundancy: data[i] & 0x03\n        });\n      }\n\n      return result;\n    },\n    sidx: function sidx(data) {\n      var view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n          result = {\n        version: data[0],\n        flags: new Uint8Array(data.subarray(1, 4)),\n        references: [],\n        referenceId: view.getUint32(4),\n        timescale: view.getUint32(8),\n        earliestPresentationTime: view.getUint32(12),\n        firstOffset: view.getUint32(16)\n      },\n          referenceCount = view.getUint16(22),\n          i;\n\n      for (i = 24; referenceCount; i += 12, referenceCount--) {\n        result.references.push({\n          referenceType: (data[i] & 0x80) >>> 7,\n          referencedSize: view.getUint32(i) & 0x7FFFFFFF,\n          subsegmentDuration: view.getUint32(i + 4),\n          startsWithSap: !!(data[i + 8] & 0x80),\n          sapType: (data[i + 8] & 0x70) >>> 4,\n          sapDeltaTime: view.getUint32(i + 8) & 0x0FFFFFFF\n        });\n      }\n\n      return result;\n    },\n    smhd: function smhd(data) {\n      return {\n        version: data[0],\n        flags: new Uint8Array(data.subarray(1, 4)),\n        balance: data[4] + data[5] / 256\n      };\n    },\n    stbl: function stbl(data) {\n      return {\n        boxes: inspectMp4(data)\n      };\n    },\n    stco: function stco(data) {\n      var view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n          result = {\n        version: data[0],\n        flags: new Uint8Array(data.subarray(1, 4)),\n        chunkOffsets: []\n      },\n          entryCount = view.getUint32(4),\n          i;\n\n      for (i = 8; entryCount; i += 4, entryCount--) {\n        result.chunkOffsets.push(view.getUint32(i));\n      }\n\n      return result;\n    },\n    stsc: function stsc(data) {\n      var view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n          entryCount = view.getUint32(4),\n          result = {\n        version: data[0],\n        flags: new Uint8Array(data.subarray(1, 4)),\n        sampleToChunks: []\n      },\n          i;\n\n      for (i = 8; entryCount; i += 12, entryCount--) {\n        result.sampleToChunks.push({\n          firstChunk: view.getUint32(i),\n          samplesPerChunk: view.getUint32(i + 4),\n          sampleDescriptionIndex: view.getUint32(i + 8)\n        });\n      }\n\n      return result;\n    },\n    stsd: function stsd(data) {\n      return {\n        version: data[0],\n        flags: new Uint8Array(data.subarray(1, 4)),\n        sampleDescriptions: inspectMp4(data.subarray(8))\n      };\n    },\n    stsz: function stsz(data) {\n      var view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n          result = {\n        version: data[0],\n        flags: new Uint8Array(data.subarray(1, 4)),\n        sampleSize: view.getUint32(4),\n        entries: []\n      },\n          i;\n\n      for (i = 12; i < data.byteLength; i += 4) {\n        result.entries.push(view.getUint32(i));\n      }\n\n      return result;\n    },\n    stts: function stts(data) {\n      var view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n          result = {\n        version: data[0],\n        flags: new Uint8Array(data.subarray(1, 4)),\n        timeToSamples: []\n      },\n          entryCount = view.getUint32(4),\n          i;\n\n      for (i = 8; entryCount; i += 8, entryCount--) {\n        result.timeToSamples.push({\n          sampleCount: view.getUint32(i),\n          sampleDelta: view.getUint32(i + 4)\n        });\n      }\n\n      return result;\n    },\n    styp: function styp(data) {\n      return parse$1.ftyp(data);\n    },\n    tfdt: function tfdt(data) {\n      var result = {\n        version: data[0],\n        flags: new Uint8Array(data.subarray(1, 4)),\n        baseMediaDecodeTime: data[4] << 24 | data[5] << 16 | data[6] << 8 | data[7]\n      };\n\n      if (result.version === 1) {\n        result.baseMediaDecodeTime *= Math.pow(2, 32);\n        result.baseMediaDecodeTime += data[8] << 24 | data[9] << 16 | data[10] << 8 | data[11];\n      }\n\n      return result;\n    },\n    tfhd: function tfhd(data) {\n      var view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n          result = {\n        version: data[0],\n        flags: new Uint8Array(data.subarray(1, 4)),\n        trackId: view.getUint32(4)\n      },\n          baseDataOffsetPresent = result.flags[2] & 0x01,\n          sampleDescriptionIndexPresent = result.flags[2] & 0x02,\n          defaultSampleDurationPresent = result.flags[2] & 0x08,\n          defaultSampleSizePresent = result.flags[2] & 0x10,\n          defaultSampleFlagsPresent = result.flags[2] & 0x20,\n          durationIsEmpty = result.flags[0] & 0x010000,\n          defaultBaseIsMoof = result.flags[0] & 0x020000,\n          i;\n      i = 8;\n\n      if (baseDataOffsetPresent) {\n        i += 4; // truncate top 4 bytes\n        // FIXME: should we read the full 64 bits?\n\n        result.baseDataOffset = view.getUint32(12);\n        i += 4;\n      }\n\n      if (sampleDescriptionIndexPresent) {\n        result.sampleDescriptionIndex = view.getUint32(i);\n        i += 4;\n      }\n\n      if (defaultSampleDurationPresent) {\n        result.defaultSampleDuration = view.getUint32(i);\n        i += 4;\n      }\n\n      if (defaultSampleSizePresent) {\n        result.defaultSampleSize = view.getUint32(i);\n        i += 4;\n      }\n\n      if (defaultSampleFlagsPresent) {\n        result.defaultSampleFlags = view.getUint32(i);\n      }\n\n      if (durationIsEmpty) {\n        result.durationIsEmpty = true;\n      }\n\n      if (!baseDataOffsetPresent && defaultBaseIsMoof) {\n        result.baseDataOffsetIsMoof = true;\n      }\n\n      return result;\n    },\n    tkhd: function tkhd(data) {\n      var view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n          i = 4,\n          result = {\n        version: view.getUint8(0),\n        flags: new Uint8Array(data.subarray(1, 4))\n      };\n\n      if (result.version === 1) {\n        i += 4;\n        result.creationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes\n\n        i += 8;\n        result.modificationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes\n\n        i += 4;\n        result.trackId = view.getUint32(i);\n        i += 4;\n        i += 8;\n        result.duration = view.getUint32(i); // truncating top 4 bytes\n      } else {\n        result.creationTime = parseMp4Date(view.getUint32(i));\n        i += 4;\n        result.modificationTime = parseMp4Date(view.getUint32(i));\n        i += 4;\n        result.trackId = view.getUint32(i);\n        i += 4;\n        i += 4;\n        result.duration = view.getUint32(i);\n      }\n\n      i += 4;\n      i += 2 * 4;\n      result.layer = view.getUint16(i);\n      i += 2;\n      result.alternateGroup = view.getUint16(i);\n      i += 2; // convert fixed-point, base 16 back to a number\n\n      result.volume = view.getUint8(i) + view.getUint8(i + 1) / 8;\n      i += 2;\n      i += 2;\n      result.matrix = new Uint32Array(data.subarray(i, i + 9 * 4));\n      i += 9 * 4;\n      result.width = view.getUint16(i) + view.getUint16(i + 2) / 16;\n      i += 4;\n      result.height = view.getUint16(i) + view.getUint16(i + 2) / 16;\n      return result;\n    },\n    traf: function traf(data) {\n      return {\n        boxes: inspectMp4(data)\n      };\n    },\n    trak: function trak(data) {\n      return {\n        boxes: inspectMp4(data)\n      };\n    },\n    trex: function trex(data) {\n      var view = new DataView(data.buffer, data.byteOffset, data.byteLength);\n      return {\n        version: data[0],\n        flags: new Uint8Array(data.subarray(1, 4)),\n        trackId: view.getUint32(4),\n        defaultSampleDescriptionIndex: view.getUint32(8),\n        defaultSampleDuration: view.getUint32(12),\n        defaultSampleSize: view.getUint32(16),\n        sampleDependsOn: data[20] & 0x03,\n        sampleIsDependedOn: (data[21] & 0xc0) >> 6,\n        sampleHasRedundancy: (data[21] & 0x30) >> 4,\n        samplePaddingValue: (data[21] & 0x0e) >> 1,\n        sampleIsDifferenceSample: !!(data[21] & 0x01),\n        sampleDegradationPriority: view.getUint16(22)\n      };\n    },\n    trun: function trun(data) {\n      var result = {\n        version: data[0],\n        flags: new Uint8Array(data.subarray(1, 4)),\n        samples: []\n      },\n          view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n          // Flag interpretation\n      dataOffsetPresent = result.flags[2] & 0x01,\n          // compare with 2nd byte of 0x1\n      firstSampleFlagsPresent = result.flags[2] & 0x04,\n          // compare with 2nd byte of 0x4\n      sampleDurationPresent = result.flags[1] & 0x01,\n          // compare with 2nd byte of 0x100\n      sampleSizePresent = result.flags[1] & 0x02,\n          // compare with 2nd byte of 0x200\n      sampleFlagsPresent = result.flags[1] & 0x04,\n          // compare with 2nd byte of 0x400\n      sampleCompositionTimeOffsetPresent = result.flags[1] & 0x08,\n          // compare with 2nd byte of 0x800\n      sampleCount = view.getUint32(4),\n          offset = 8,\n          sample;\n\n      if (dataOffsetPresent) {\n        // 32 bit signed integer\n        result.dataOffset = view.getInt32(offset);\n        offset += 4;\n      } // Overrides the flags for the first sample only. The order of\n      // optional values will be: duration, size, compositionTimeOffset\n\n\n      if (firstSampleFlagsPresent && sampleCount) {\n        sample = {\n          flags: parseSampleFlags(data.subarray(offset, offset + 4))\n        };\n        offset += 4;\n\n        if (sampleDurationPresent) {\n          sample.duration = view.getUint32(offset);\n          offset += 4;\n        }\n\n        if (sampleSizePresent) {\n          sample.size = view.getUint32(offset);\n          offset += 4;\n        }\n\n        if (sampleCompositionTimeOffsetPresent) {\n          // Note: this should be a signed int if version is 1\n          sample.compositionTimeOffset = view.getUint32(offset);\n          offset += 4;\n        }\n\n        result.samples.push(sample);\n        sampleCount--;\n      }\n\n      while (sampleCount--) {\n        sample = {};\n\n        if (sampleDurationPresent) {\n          sample.duration = view.getUint32(offset);\n          offset += 4;\n        }\n\n        if (sampleSizePresent) {\n          sample.size = view.getUint32(offset);\n          offset += 4;\n        }\n\n        if (sampleFlagsPresent) {\n          sample.flags = parseSampleFlags(data.subarray(offset, offset + 4));\n          offset += 4;\n        }\n\n        if (sampleCompositionTimeOffsetPresent) {\n          // Note: this should be a signed int if version is 1\n          sample.compositionTimeOffset = view.getUint32(offset);\n          offset += 4;\n        }\n\n        result.samples.push(sample);\n      }\n\n      return result;\n    },\n    'url ': function url(data) {\n      return {\n        version: data[0],\n        flags: new Uint8Array(data.subarray(1, 4))\n      };\n    },\n    vmhd: function vmhd(data) {\n      var view = new DataView(data.buffer, data.byteOffset, data.byteLength);\n      return {\n        version: data[0],\n        flags: new Uint8Array(data.subarray(1, 4)),\n        graphicsmode: view.getUint16(4),\n        opcolor: new Uint16Array([view.getUint16(6), view.getUint16(8), view.getUint16(10)])\n      };\n    }\n  };\n  /**\n   * Return a javascript array of box objects parsed from an ISO base\n   * media file.\n   * @param data {Uint8Array} the binary data of the media to be inspected\n   * @return {array} a javascript array of potentially nested box objects\n   */\n\n\n  inspectMp4 = function inspectMp4(data) {\n    var i = 0,\n        result = [],\n        view,\n        size,\n        type,\n        end,\n        box; // Convert data from Uint8Array to ArrayBuffer, to follow Dataview API\n\n    var ab = new ArrayBuffer(data.length);\n    var v = new Uint8Array(ab);\n\n    for (var z = 0; z < data.length; ++z) {\n      v[z] = data[z];\n    }\n\n    view = new DataView(ab);\n\n    while (i < data.byteLength) {\n      // parse box data\n      size = view.getUint32(i);\n      type = parseType$2(data.subarray(i + 4, i + 8));\n      end = size > 1 ? i + size : data.byteLength; // parse type-specific data\n\n      box = (parse$1[type] || function (data) {\n        return {\n          data: data\n        };\n      })(data.subarray(i + 8, end));\n\n      box.size = size;\n      box.type = type; // store this box and move to the next\n\n      result.push(box);\n      i = end;\n    }\n\n    return result;\n  };\n  /**\n   * Returns a textual representation of the javascript represtentation\n   * of an MP4 file. You can use it as an alternative to\n   * JSON.stringify() to compare inspected MP4s.\n   * @param inspectedMp4 {array} the parsed array of boxes in an MP4\n   * file\n   * @param depth {number} (optional) the number of ancestor boxes of\n   * the elements of inspectedMp4. Assumed to be zero if unspecified.\n   * @return {string} a text representation of the parsed MP4\n   */\n\n\n  _textifyMp = function textifyMp4(inspectedMp4, depth) {\n    var indent;\n    depth = depth || 0;\n    indent = new Array(depth * 2 + 1).join(' '); // iterate over all the boxes\n\n    return inspectedMp4.map(function (box, index) {\n      // list the box type first at the current indentation level\n      return indent + box.type + '\\n' + // the type is already included and handle child boxes separately\n      Object.keys(box).filter(function (key) {\n        return key !== 'type' && key !== 'boxes'; // output all the box properties\n      }).map(function (key) {\n        var prefix = indent + '  ' + key + ': ',\n            value = box[key]; // print out raw bytes as hexademical\n\n        if (value instanceof Uint8Array || value instanceof Uint32Array) {\n          var bytes = Array.prototype.slice.call(new Uint8Array(value.buffer, value.byteOffset, value.byteLength)).map(function (byte) {\n            return ' ' + ('00' + byte.toString(16)).slice(-2);\n          }).join('').match(/.{1,24}/g);\n\n          if (!bytes) {\n            return prefix + '<>';\n          }\n\n          if (bytes.length === 1) {\n            return prefix + '<' + bytes.join('').slice(1) + '>';\n          }\n\n          return prefix + '<\\n' + bytes.map(function (line) {\n            return indent + '  ' + line;\n          }).join('\\n') + '\\n' + indent + '  >';\n        } // stringify generic objects\n\n\n        return prefix + JSON.stringify(value, null, 2).split('\\n').map(function (line, index) {\n          if (index === 0) {\n            return line;\n          }\n\n          return indent + '  ' + line;\n        }).join('\\n');\n      }).join('\\n') + ( // recursively textify the child boxes\n      box.boxes ? '\\n' + _textifyMp(box.boxes, depth + 1) : '');\n    }).join('\\n');\n  };\n\n  var mp4Inspector = {\n    inspect: inspectMp4,\n    textify: _textifyMp,\n    parseTfdt: parse$1.tfdt,\n    parseHdlr: parse$1.hdlr,\n    parseTfhd: parse$1.tfhd,\n    parseTrun: parse$1.trun\n  };\n\n  var discardEmulationPreventionBytes$1 = captionPacketParser.discardEmulationPreventionBytes;\n  var CaptionStream$1 = captionStream.CaptionStream;\n  /**\n    * Maps an offset in the mdat to a sample based on the the size of the samples.\n    * Assumes that `parseSamples` has been called first.\n    *\n    * @param {Number} offset - The offset into the mdat\n    * @param {Object[]} samples - An array of samples, parsed using `parseSamples`\n    * @return {?Object} The matching sample, or null if no match was found.\n    *\n    * @see ISO-BMFF-12/2015, Section 8.8.8\n   **/\n\n  var mapToSample = function mapToSample(offset, samples) {\n    var approximateOffset = offset;\n\n    for (var i = 0; i < samples.length; i++) {\n      var sample = samples[i];\n\n      if (approximateOffset < sample.size) {\n        return sample;\n      }\n\n      approximateOffset -= sample.size;\n    }\n\n    return null;\n  };\n  /**\n    * Finds SEI nal units contained in a Media Data Box.\n    * Assumes that `parseSamples` has been called first.\n    *\n    * @param {Uint8Array} avcStream - The bytes of the mdat\n    * @param {Object[]} samples - The samples parsed out by `parseSamples`\n    * @param {Number} trackId - The trackId of this video track\n    * @return {Object[]} seiNals - the parsed SEI NALUs found.\n    *   The contents of the seiNal should match what is expected by\n    *   CaptionStream.push (nalUnitType, size, data, escapedRBSP, pts, dts)\n    *\n    * @see ISO-BMFF-12/2015, Section 8.1.1\n    * @see Rec. ITU-T H.264, 7.3.2.3.1\n   **/\n\n\n  var findSeiNals = function findSeiNals(avcStream, samples, trackId) {\n    var avcView = new DataView(avcStream.buffer, avcStream.byteOffset, avcStream.byteLength),\n        result = [],\n        seiNal,\n        i,\n        length,\n        lastMatchedSample;\n\n    for (i = 0; i + 4 < avcStream.length; i += length) {\n      length = avcView.getUint32(i);\n      i += 4; // Bail if this doesn't appear to be an H264 stream\n\n      if (length <= 0) {\n        continue;\n      }\n\n      switch (avcStream[i] & 0x1F) {\n        case 0x06:\n          var data = avcStream.subarray(i + 1, i + 1 + length);\n          var matchingSample = mapToSample(i, samples);\n          seiNal = {\n            nalUnitType: 'sei_rbsp',\n            size: length,\n            data: data,\n            escapedRBSP: discardEmulationPreventionBytes$1(data),\n            trackId: trackId\n          };\n\n          if (matchingSample) {\n            seiNal.pts = matchingSample.pts;\n            seiNal.dts = matchingSample.dts;\n            lastMatchedSample = matchingSample;\n          } else {\n            // If a matching sample cannot be found, use the last\n            // sample's values as they should be as close as possible\n            seiNal.pts = lastMatchedSample.pts;\n            seiNal.dts = lastMatchedSample.dts;\n          }\n\n          result.push(seiNal);\n          break;\n\n        default:\n          break;\n      }\n    }\n\n    return result;\n  };\n  /**\n    * Parses sample information out of Track Run Boxes and calculates\n    * the absolute presentation and decode timestamps of each sample.\n    *\n    * @param {Array<Uint8Array>} truns - The Trun Run boxes to be parsed\n    * @param {Number} baseMediaDecodeTime - base media decode time from tfdt\n        @see ISO-BMFF-12/2015, Section 8.8.12\n    * @param {Object} tfhd - The parsed Track Fragment Header\n    *   @see inspect.parseTfhd\n    * @return {Object[]} the parsed samples\n    *\n    * @see ISO-BMFF-12/2015, Section 8.8.8\n   **/\n\n\n  var parseSamples = function parseSamples(truns, baseMediaDecodeTime, tfhd) {\n    var currentDts = baseMediaDecodeTime;\n    var defaultSampleDuration = tfhd.defaultSampleDuration || 0;\n    var defaultSampleSize = tfhd.defaultSampleSize || 0;\n    var trackId = tfhd.trackId;\n    var allSamples = [];\n    truns.forEach(function (trun) {\n      // Note: We currently do not parse the sample table as well\n      // as the trun. It's possible some sources will require this.\n      // moov > trak > mdia > minf > stbl\n      var trackRun = mp4Inspector.parseTrun(trun);\n      var samples = trackRun.samples;\n      samples.forEach(function (sample) {\n        if (sample.duration === undefined) {\n          sample.duration = defaultSampleDuration;\n        }\n\n        if (sample.size === undefined) {\n          sample.size = defaultSampleSize;\n        }\n\n        sample.trackId = trackId;\n        sample.dts = currentDts;\n\n        if (sample.compositionTimeOffset === undefined) {\n          sample.compositionTimeOffset = 0;\n        }\n\n        sample.pts = currentDts + sample.compositionTimeOffset;\n        currentDts += sample.duration;\n      });\n      allSamples = allSamples.concat(samples);\n    });\n    return allSamples;\n  };\n  /**\n    * Parses out caption nals from an FMP4 segment's video tracks.\n    *\n    * @param {Uint8Array} segment - The bytes of a single segment\n    * @param {Number} videoTrackId - The trackId of a video track in the segment\n    * @return {Object.<Number, Object[]>} A mapping of video trackId to\n    *   a list of seiNals found in that track\n   **/\n\n\n  var parseCaptionNals = function parseCaptionNals(segment, videoTrackId) {\n    // To get the samples\n    var trafs = probe.findBox(segment, ['moof', 'traf']); // To get SEI NAL units\n\n    var mdats = probe.findBox(segment, ['mdat']);\n    var captionNals = {};\n    var mdatTrafPairs = []; // Pair up each traf with a mdat as moofs and mdats are in pairs\n\n    mdats.forEach(function (mdat, index) {\n      var matchingTraf = trafs[index];\n      mdatTrafPairs.push({\n        mdat: mdat,\n        traf: matchingTraf\n      });\n    });\n    mdatTrafPairs.forEach(function (pair) {\n      var mdat = pair.mdat;\n      var traf = pair.traf;\n      var tfhd = probe.findBox(traf, ['tfhd']); // Exactly 1 tfhd per traf\n\n      var headerInfo = mp4Inspector.parseTfhd(tfhd[0]);\n      var trackId = headerInfo.trackId;\n      var tfdt = probe.findBox(traf, ['tfdt']); // Either 0 or 1 tfdt per traf\n\n      var baseMediaDecodeTime = tfdt.length > 0 ? mp4Inspector.parseTfdt(tfdt[0]).baseMediaDecodeTime : 0;\n      var truns = probe.findBox(traf, ['trun']);\n      var samples;\n      var seiNals; // Only parse video data for the chosen video track\n\n      if (videoTrackId === trackId && truns.length > 0) {\n        samples = parseSamples(truns, baseMediaDecodeTime, headerInfo);\n        seiNals = findSeiNals(mdat, samples, trackId);\n\n        if (!captionNals[trackId]) {\n          captionNals[trackId] = [];\n        }\n\n        captionNals[trackId] = captionNals[trackId].concat(seiNals);\n      }\n    });\n    return captionNals;\n  };\n  /**\n    * Parses out inband captions from an MP4 container and returns\n    * caption objects that can be used by WebVTT and the TextTrack API.\n    * @see https://developer.mozilla.org/en-US/docs/Web/API/VTTCue\n    * @see https://developer.mozilla.org/en-US/docs/Web/API/TextTrack\n    * Assumes that `probe.getVideoTrackIds` and `probe.timescale` have been called first\n    *\n    * @param {Uint8Array} segment - The fmp4 segment containing embedded captions\n    * @param {Number} trackId - The id of the video track to parse\n    * @param {Number} timescale - The timescale for the video track from the init segment\n    *\n    * @return {?Object[]} parsedCaptions - A list of captions or null if no video tracks\n    * @return {Number} parsedCaptions[].startTime - The time to show the caption in seconds\n    * @return {Number} parsedCaptions[].endTime - The time to stop showing the caption in seconds\n    * @return {String} parsedCaptions[].text - The visible content of the caption\n   **/\n\n\n  var parseEmbeddedCaptions = function parseEmbeddedCaptions(segment, trackId, timescale) {\n    var seiNals;\n\n    if (!trackId) {\n      return null;\n    }\n\n    seiNals = parseCaptionNals(segment, trackId);\n    return {\n      seiNals: seiNals[trackId],\n      timescale: timescale\n    };\n  };\n  /**\n    * Converts SEI NALUs into captions that can be used by video.js\n   **/\n\n\n  var CaptionParser = function CaptionParser() {\n    var isInitialized = false;\n    var captionStream$$1; // Stores segments seen before trackId and timescale are set\n\n    var segmentCache; // Stores video track ID of the track being parsed\n\n    var trackId; // Stores the timescale of the track being parsed\n\n    var timescale; // Stores captions parsed so far\n\n    var parsedCaptions;\n    /**\n      * A method to indicate whether a CaptionParser has been initalized\n      * @returns {Boolean}\n     **/\n\n    this.isInitialized = function () {\n      return isInitialized;\n    };\n    /**\n      * Initializes the underlying CaptionStream, SEI NAL parsing\n      * and management, and caption collection\n     **/\n\n\n    this.init = function () {\n      captionStream$$1 = new CaptionStream$1();\n      isInitialized = true; // Collect dispatched captions\n\n      captionStream$$1.on('data', function (event) {\n        // Convert to seconds in the source's timescale\n        event.startTime = event.startPts / timescale;\n        event.endTime = event.endPts / timescale;\n        parsedCaptions.captions.push(event);\n        parsedCaptions.captionStreams[event.stream] = true;\n      });\n    };\n    /**\n      * Determines if a new video track will be selected\n      * or if the timescale changed\n      * @return {Boolean}\n     **/\n\n\n    this.isNewInit = function (videoTrackIds, timescales) {\n      if (videoTrackIds && videoTrackIds.length === 0 || timescales && typeof timescales === 'object' && Object.keys(timescales).length === 0) {\n        return false;\n      }\n\n      return trackId !== videoTrackIds[0] || timescale !== timescales[trackId];\n    };\n    /**\n      * Parses out SEI captions and interacts with underlying\n      * CaptionStream to return dispatched captions\n      *\n      * @param {Uint8Array} segment - The fmp4 segment containing embedded captions\n      * @param {Number[]} videoTrackIds - A list of video tracks found in the init segment\n      * @param {Object.<Number, Number>} timescales - The timescales found in the init segment\n      * @see parseEmbeddedCaptions\n      * @see m2ts/caption-stream.js\n     **/\n\n\n    this.parse = function (segment, videoTrackIds, timescales) {\n      var parsedData;\n\n      if (!this.isInitialized()) {\n        return null; // This is not likely to be a video segment\n      } else if (!videoTrackIds || !timescales) {\n        return null;\n      } else if (this.isNewInit(videoTrackIds, timescales)) {\n        // Use the first video track only as there is no\n        // mechanism to switch to other video tracks\n        trackId = videoTrackIds[0];\n        timescale = timescales[trackId]; // If an init segment has not been seen yet, hold onto segment\n        // data until we have one\n      } else if (!trackId || !timescale) {\n        segmentCache.push(segment);\n        return null;\n      } // Now that a timescale and trackId is set, parse cached segments\n\n\n      while (segmentCache.length > 0) {\n        var cachedSegment = segmentCache.shift();\n        this.parse(cachedSegment, videoTrackIds, timescales);\n      }\n\n      parsedData = parseEmbeddedCaptions(segment, trackId, timescale);\n\n      if (parsedData === null || !parsedData.seiNals) {\n        return null;\n      }\n\n      this.pushNals(parsedData.seiNals); // Force the parsed captions to be dispatched\n\n      this.flushStream();\n      return parsedCaptions;\n    };\n    /**\n      * Pushes SEI NALUs onto CaptionStream\n      * @param {Object[]} nals - A list of SEI nals parsed using `parseCaptionNals`\n      * Assumes that `parseCaptionNals` has been called first\n      * @see m2ts/caption-stream.js\n      **/\n\n\n    this.pushNals = function (nals) {\n      if (!this.isInitialized() || !nals || nals.length === 0) {\n        return null;\n      }\n\n      nals.forEach(function (nal) {\n        captionStream$$1.push(nal);\n      });\n    };\n    /**\n      * Flushes underlying CaptionStream to dispatch processed, displayable captions\n      * @see m2ts/caption-stream.js\n     **/\n\n\n    this.flushStream = function () {\n      if (!this.isInitialized()) {\n        return null;\n      }\n\n      captionStream$$1.flush();\n    };\n    /**\n      * Reset caption buckets for new data\n     **/\n\n\n    this.clearParsedCaptions = function () {\n      parsedCaptions.captions = [];\n      parsedCaptions.captionStreams = {};\n    };\n    /**\n      * Resets underlying CaptionStream\n      * @see m2ts/caption-stream.js\n     **/\n\n\n    this.resetCaptionStream = function () {\n      if (!this.isInitialized()) {\n        return null;\n      }\n\n      captionStream$$1.reset();\n    };\n    /**\n      * Convenience method to clear all captions flushed from the\n      * CaptionStream and still being parsed\n      * @see m2ts/caption-stream.js\n     **/\n\n\n    this.clearAllCaptions = function () {\n      this.clearParsedCaptions();\n      this.resetCaptionStream();\n    };\n    /**\n      * Reset caption parser\n     **/\n\n\n    this.reset = function () {\n      segmentCache = [];\n      trackId = null;\n      timescale = null;\n\n      if (!parsedCaptions) {\n        parsedCaptions = {\n          captions: [],\n          // CC1, CC2, CC3, CC4\n          captionStreams: {}\n        };\n      } else {\n        this.clearParsedCaptions();\n      }\n\n      this.resetCaptionStream();\n    };\n\n    this.reset();\n  };\n\n  var captionParser = CaptionParser;\n\n  var mp4 = {\n    generator: mp4Generator,\n    probe: probe,\n    Transmuxer: transmuxer.Transmuxer,\n    AudioSegmentStream: transmuxer.AudioSegmentStream,\n    VideoSegmentStream: transmuxer.VideoSegmentStream,\n    CaptionParser: captionParser\n  };\n  var mp4_6 = mp4.CaptionParser;\n\n  var parsePid = function parsePid(packet) {\n    var pid = packet[1] & 0x1f;\n    pid <<= 8;\n    pid |= packet[2];\n    return pid;\n  };\n\n  var parsePayloadUnitStartIndicator = function parsePayloadUnitStartIndicator(packet) {\n    return !!(packet[1] & 0x40);\n  };\n\n  var parseAdaptionField = function parseAdaptionField(packet) {\n    var offset = 0; // if an adaption field is present, its length is specified by the\n    // fifth byte of the TS packet header. The adaptation field is\n    // used to add stuffing to PES packets that don't fill a complete\n    // TS packet, and to specify some forms of timing and control data\n    // that we do not currently use.\n\n    if ((packet[3] & 0x30) >>> 4 > 0x01) {\n      offset += packet[4] + 1;\n    }\n\n    return offset;\n  };\n\n  var parseType$3 = function parseType(packet, pmtPid) {\n    var pid = parsePid(packet);\n\n    if (pid === 0) {\n      return 'pat';\n    } else if (pid === pmtPid) {\n      return 'pmt';\n    } else if (pmtPid) {\n      return 'pes';\n    }\n\n    return null;\n  };\n\n  var parsePat = function parsePat(packet) {\n    var pusi = parsePayloadUnitStartIndicator(packet);\n    var offset = 4 + parseAdaptionField(packet);\n\n    if (pusi) {\n      offset += packet[offset] + 1;\n    }\n\n    return (packet[offset + 10] & 0x1f) << 8 | packet[offset + 11];\n  };\n\n  var parsePmt = function parsePmt(packet) {\n    var programMapTable = {};\n    var pusi = parsePayloadUnitStartIndicator(packet);\n    var payloadOffset = 4 + parseAdaptionField(packet);\n\n    if (pusi) {\n      payloadOffset += packet[payloadOffset] + 1;\n    } // PMTs can be sent ahead of the time when they should actually\n    // take effect. We don't believe this should ever be the case\n    // for HLS but we'll ignore \"forward\" PMT declarations if we see\n    // them. Future PMT declarations have the current_next_indicator\n    // set to zero.\n\n\n    if (!(packet[payloadOffset + 5] & 0x01)) {\n      return;\n    }\n\n    var sectionLength, tableEnd, programInfoLength; // the mapping table ends at the end of the current section\n\n    sectionLength = (packet[payloadOffset + 1] & 0x0f) << 8 | packet[payloadOffset + 2];\n    tableEnd = 3 + sectionLength - 4; // to determine where the table is, we have to figure out how\n    // long the program info descriptors are\n\n    programInfoLength = (packet[payloadOffset + 10] & 0x0f) << 8 | packet[payloadOffset + 11]; // advance the offset to the first entry in the mapping table\n\n    var offset = 12 + programInfoLength;\n\n    while (offset < tableEnd) {\n      var i = payloadOffset + offset; // add an entry that maps the elementary_pid to the stream_type\n\n      programMapTable[(packet[i + 1] & 0x1F) << 8 | packet[i + 2]] = packet[i]; // move to the next table entry\n      // skip past the elementary stream descriptors, if present\n\n      offset += ((packet[i + 3] & 0x0F) << 8 | packet[i + 4]) + 5;\n    }\n\n    return programMapTable;\n  };\n\n  var parsePesType = function parsePesType(packet, programMapTable) {\n    var pid = parsePid(packet);\n    var type = programMapTable[pid];\n\n    switch (type) {\n      case streamTypes.H264_STREAM_TYPE:\n        return 'video';\n\n      case streamTypes.ADTS_STREAM_TYPE:\n        return 'audio';\n\n      case streamTypes.METADATA_STREAM_TYPE:\n        return 'timed-metadata';\n\n      default:\n        return null;\n    }\n  };\n\n  var parsePesTime = function parsePesTime(packet) {\n    var pusi = parsePayloadUnitStartIndicator(packet);\n\n    if (!pusi) {\n      return null;\n    }\n\n    var offset = 4 + parseAdaptionField(packet);\n\n    if (offset >= packet.byteLength) {\n      // From the H 222.0 MPEG-TS spec\n      // \"For transport stream packets carrying PES packets, stuffing is needed when there\n      //  is insufficient PES packet data to completely fill the transport stream packet\n      //  payload bytes. Stuffing is accomplished by defining an adaptation field longer than\n      //  the sum of the lengths of the data elements in it, so that the payload bytes\n      //  remaining after the adaptation field exactly accommodates the available PES packet\n      //  data.\"\n      //\n      // If the offset is >= the length of the packet, then the packet contains no data\n      // and instead is just adaption field stuffing bytes\n      return null;\n    }\n\n    var pes = null;\n    var ptsDtsFlags; // PES packets may be annotated with a PTS value, or a PTS value\n    // and a DTS value. Determine what combination of values is\n    // available to work with.\n\n    ptsDtsFlags = packet[offset + 7]; // PTS and DTS are normally stored as a 33-bit number.  Javascript\n    // performs all bitwise operations on 32-bit integers but javascript\n    // supports a much greater range (52-bits) of integer using standard\n    // mathematical operations.\n    // We construct a 31-bit value using bitwise operators over the 31\n    // most significant bits and then multiply by 4 (equal to a left-shift\n    // of 2) before we add the final 2 least significant bits of the\n    // timestamp (equal to an OR.)\n\n    if (ptsDtsFlags & 0xC0) {\n      pes = {}; // the PTS and DTS are not written out directly. For information\n      // on how they are encoded, see\n      // http://dvd.sourceforge.net/dvdinfo/pes-hdr.html\n\n      pes.pts = (packet[offset + 9] & 0x0E) << 27 | (packet[offset + 10] & 0xFF) << 20 | (packet[offset + 11] & 0xFE) << 12 | (packet[offset + 12] & 0xFF) << 5 | (packet[offset + 13] & 0xFE) >>> 3;\n      pes.pts *= 4; // Left shift by 2\n\n      pes.pts += (packet[offset + 13] & 0x06) >>> 1; // OR by the two LSBs\n\n      pes.dts = pes.pts;\n\n      if (ptsDtsFlags & 0x40) {\n        pes.dts = (packet[offset + 14] & 0x0E) << 27 | (packet[offset + 15] & 0xFF) << 20 | (packet[offset + 16] & 0xFE) << 12 | (packet[offset + 17] & 0xFF) << 5 | (packet[offset + 18] & 0xFE) >>> 3;\n        pes.dts *= 4; // Left shift by 2\n\n        pes.dts += (packet[offset + 18] & 0x06) >>> 1; // OR by the two LSBs\n      }\n    }\n\n    return pes;\n  };\n\n  var parseNalUnitType = function parseNalUnitType(type) {\n    switch (type) {\n      case 0x05:\n        return 'slice_layer_without_partitioning_rbsp_idr';\n\n      case 0x06:\n        return 'sei_rbsp';\n\n      case 0x07:\n        return 'seq_parameter_set_rbsp';\n\n      case 0x08:\n        return 'pic_parameter_set_rbsp';\n\n      case 0x09:\n        return 'access_unit_delimiter_rbsp';\n\n      default:\n        return null;\n    }\n  };\n\n  var videoPacketContainsKeyFrame = function videoPacketContainsKeyFrame(packet) {\n    var offset = 4 + parseAdaptionField(packet);\n    var frameBuffer = packet.subarray(offset);\n    var frameI = 0;\n    var frameSyncPoint = 0;\n    var foundKeyFrame = false;\n    var nalType; // advance the sync point to a NAL start, if necessary\n\n    for (; frameSyncPoint < frameBuffer.byteLength - 3; frameSyncPoint++) {\n      if (frameBuffer[frameSyncPoint + 2] === 1) {\n        // the sync point is properly aligned\n        frameI = frameSyncPoint + 5;\n        break;\n      }\n    }\n\n    while (frameI < frameBuffer.byteLength) {\n      // look at the current byte to determine if we've hit the end of\n      // a NAL unit boundary\n      switch (frameBuffer[frameI]) {\n        case 0:\n          // skip past non-sync sequences\n          if (frameBuffer[frameI - 1] !== 0) {\n            frameI += 2;\n            break;\n          } else if (frameBuffer[frameI - 2] !== 0) {\n            frameI++;\n            break;\n          }\n\n          if (frameSyncPoint + 3 !== frameI - 2) {\n            nalType = parseNalUnitType(frameBuffer[frameSyncPoint + 3] & 0x1f);\n\n            if (nalType === 'slice_layer_without_partitioning_rbsp_idr') {\n              foundKeyFrame = true;\n            }\n          } // drop trailing zeroes\n\n\n          do {\n            frameI++;\n          } while (frameBuffer[frameI] !== 1 && frameI < frameBuffer.length);\n\n          frameSyncPoint = frameI - 2;\n          frameI += 3;\n          break;\n\n        case 1:\n          // skip past non-sync sequences\n          if (frameBuffer[frameI - 1] !== 0 || frameBuffer[frameI - 2] !== 0) {\n            frameI += 3;\n            break;\n          }\n\n          nalType = parseNalUnitType(frameBuffer[frameSyncPoint + 3] & 0x1f);\n\n          if (nalType === 'slice_layer_without_partitioning_rbsp_idr') {\n            foundKeyFrame = true;\n          }\n\n          frameSyncPoint = frameI - 2;\n          frameI += 3;\n          break;\n\n        default:\n          // the current byte isn't a one or zero, so it cannot be part\n          // of a sync sequence\n          frameI += 3;\n          break;\n      }\n    }\n\n    frameBuffer = frameBuffer.subarray(frameSyncPoint);\n    frameI -= frameSyncPoint;\n    frameSyncPoint = 0; // parse the final nal\n\n    if (frameBuffer && frameBuffer.byteLength > 3) {\n      nalType = parseNalUnitType(frameBuffer[frameSyncPoint + 3] & 0x1f);\n\n      if (nalType === 'slice_layer_without_partitioning_rbsp_idr') {\n        foundKeyFrame = true;\n      }\n    }\n\n    return foundKeyFrame;\n  };\n\n  var probe$1 = {\n    parseType: parseType$3,\n    parsePat: parsePat,\n    parsePmt: parsePmt,\n    parsePayloadUnitStartIndicator: parsePayloadUnitStartIndicator,\n    parsePesType: parsePesType,\n    parsePesTime: parsePesTime,\n    videoPacketContainsKeyFrame: videoPacketContainsKeyFrame\n  };\n\n  var handleRollover$1 = timestampRolloverStream.handleRollover;\n  var probe$2 = {};\n  probe$2.ts = probe$1;\n  probe$2.aac = utils;\n  var PES_TIMESCALE = 90000,\n      MP2T_PACKET_LENGTH$1 = 188,\n      // bytes\n  SYNC_BYTE$1 = 0x47;\n  /**\n   * walks through segment data looking for pat and pmt packets to parse out\n   * program map table information\n   */\n\n  var parsePsi_ = function parsePsi_(bytes, pmt) {\n    var startIndex = 0,\n        endIndex = MP2T_PACKET_LENGTH$1,\n        packet,\n        type;\n\n    while (endIndex < bytes.byteLength) {\n      // Look for a pair of start and end sync bytes in the data..\n      if (bytes[startIndex] === SYNC_BYTE$1 && bytes[endIndex] === SYNC_BYTE$1) {\n        // We found a packet\n        packet = bytes.subarray(startIndex, endIndex);\n        type = probe$2.ts.parseType(packet, pmt.pid);\n\n        switch (type) {\n          case 'pat':\n            if (!pmt.pid) {\n              pmt.pid = probe$2.ts.parsePat(packet);\n            }\n\n            break;\n\n          case 'pmt':\n            if (!pmt.table) {\n              pmt.table = probe$2.ts.parsePmt(packet);\n            }\n\n            break;\n\n          default:\n            break;\n        } // Found the pat and pmt, we can stop walking the segment\n\n\n        if (pmt.pid && pmt.table) {\n          return;\n        }\n\n        startIndex += MP2T_PACKET_LENGTH$1;\n        endIndex += MP2T_PACKET_LENGTH$1;\n        continue;\n      } // If we get here, we have somehow become de-synchronized and we need to step\n      // forward one byte at a time until we find a pair of sync bytes that denote\n      // a packet\n\n\n      startIndex++;\n      endIndex++;\n    }\n  };\n  /**\n   * walks through the segment data from the start and end to get timing information\n   * for the first and last audio pes packets\n   */\n\n\n  var parseAudioPes_ = function parseAudioPes_(bytes, pmt, result) {\n    var startIndex = 0,\n        endIndex = MP2T_PACKET_LENGTH$1,\n        packet,\n        type,\n        pesType,\n        pusi,\n        parsed;\n    var endLoop = false; // Start walking from start of segment to get first audio packet\n\n    while (endIndex <= bytes.byteLength) {\n      // Look for a pair of start and end sync bytes in the data..\n      if (bytes[startIndex] === SYNC_BYTE$1 && (bytes[endIndex] === SYNC_BYTE$1 || endIndex === bytes.byteLength)) {\n        // We found a packet\n        packet = bytes.subarray(startIndex, endIndex);\n        type = probe$2.ts.parseType(packet, pmt.pid);\n\n        switch (type) {\n          case 'pes':\n            pesType = probe$2.ts.parsePesType(packet, pmt.table);\n            pusi = probe$2.ts.parsePayloadUnitStartIndicator(packet);\n\n            if (pesType === 'audio' && pusi) {\n              parsed = probe$2.ts.parsePesTime(packet);\n\n              if (parsed) {\n                parsed.type = 'audio';\n                result.audio.push(parsed);\n                endLoop = true;\n              }\n            }\n\n            break;\n\n          default:\n            break;\n        }\n\n        if (endLoop) {\n          break;\n        }\n\n        startIndex += MP2T_PACKET_LENGTH$1;\n        endIndex += MP2T_PACKET_LENGTH$1;\n        continue;\n      } // If we get here, we have somehow become de-synchronized and we need to step\n      // forward one byte at a time until we find a pair of sync bytes that denote\n      // a packet\n\n\n      startIndex++;\n      endIndex++;\n    } // Start walking from end of segment to get last audio packet\n\n\n    endIndex = bytes.byteLength;\n    startIndex = endIndex - MP2T_PACKET_LENGTH$1;\n    endLoop = false;\n\n    while (startIndex >= 0) {\n      // Look for a pair of start and end sync bytes in the data..\n      if (bytes[startIndex] === SYNC_BYTE$1 && (bytes[endIndex] === SYNC_BYTE$1 || endIndex === bytes.byteLength)) {\n        // We found a packet\n        packet = bytes.subarray(startIndex, endIndex);\n        type = probe$2.ts.parseType(packet, pmt.pid);\n\n        switch (type) {\n          case 'pes':\n            pesType = probe$2.ts.parsePesType(packet, pmt.table);\n            pusi = probe$2.ts.parsePayloadUnitStartIndicator(packet);\n\n            if (pesType === 'audio' && pusi) {\n              parsed = probe$2.ts.parsePesTime(packet);\n\n              if (parsed) {\n                parsed.type = 'audio';\n                result.audio.push(parsed);\n                endLoop = true;\n              }\n            }\n\n            break;\n\n          default:\n            break;\n        }\n\n        if (endLoop) {\n          break;\n        }\n\n        startIndex -= MP2T_PACKET_LENGTH$1;\n        endIndex -= MP2T_PACKET_LENGTH$1;\n        continue;\n      } // If we get here, we have somehow become de-synchronized and we need to step\n      // forward one byte at a time until we find a pair of sync bytes that denote\n      // a packet\n\n\n      startIndex--;\n      endIndex--;\n    }\n  };\n  /**\n   * walks through the segment data from the start and end to get timing information\n   * for the first and last video pes packets as well as timing information for the first\n   * key frame.\n   */\n\n\n  var parseVideoPes_ = function parseVideoPes_(bytes, pmt, result) {\n    var startIndex = 0,\n        endIndex = MP2T_PACKET_LENGTH$1,\n        packet,\n        type,\n        pesType,\n        pusi,\n        parsed,\n        frame,\n        i,\n        pes;\n    var endLoop = false;\n    var currentFrame = {\n      data: [],\n      size: 0\n    }; // Start walking from start of segment to get first video packet\n\n    while (endIndex < bytes.byteLength) {\n      // Look for a pair of start and end sync bytes in the data..\n      if (bytes[startIndex] === SYNC_BYTE$1 && bytes[endIndex] === SYNC_BYTE$1) {\n        // We found a packet\n        packet = bytes.subarray(startIndex, endIndex);\n        type = probe$2.ts.parseType(packet, pmt.pid);\n\n        switch (type) {\n          case 'pes':\n            pesType = probe$2.ts.parsePesType(packet, pmt.table);\n            pusi = probe$2.ts.parsePayloadUnitStartIndicator(packet);\n\n            if (pesType === 'video') {\n              if (pusi && !endLoop) {\n                parsed = probe$2.ts.parsePesTime(packet);\n\n                if (parsed) {\n                  parsed.type = 'video';\n                  result.video.push(parsed);\n                  endLoop = true;\n                }\n              }\n\n              if (!result.firstKeyFrame) {\n                if (pusi) {\n                  if (currentFrame.size !== 0) {\n                    frame = new Uint8Array(currentFrame.size);\n                    i = 0;\n\n                    while (currentFrame.data.length) {\n                      pes = currentFrame.data.shift();\n                      frame.set(pes, i);\n                      i += pes.byteLength;\n                    }\n\n                    if (probe$2.ts.videoPacketContainsKeyFrame(frame)) {\n                      result.firstKeyFrame = probe$2.ts.parsePesTime(frame);\n                      result.firstKeyFrame.type = 'video';\n                    }\n\n                    currentFrame.size = 0;\n                  }\n                }\n\n                currentFrame.data.push(packet);\n                currentFrame.size += packet.byteLength;\n              }\n            }\n\n            break;\n\n          default:\n            break;\n        }\n\n        if (endLoop && result.firstKeyFrame) {\n          break;\n        }\n\n        startIndex += MP2T_PACKET_LENGTH$1;\n        endIndex += MP2T_PACKET_LENGTH$1;\n        continue;\n      } // If we get here, we have somehow become de-synchronized and we need to step\n      // forward one byte at a time until we find a pair of sync bytes that denote\n      // a packet\n\n\n      startIndex++;\n      endIndex++;\n    } // Start walking from end of segment to get last video packet\n\n\n    endIndex = bytes.byteLength;\n    startIndex = endIndex - MP2T_PACKET_LENGTH$1;\n    endLoop = false;\n\n    while (startIndex >= 0) {\n      // Look for a pair of start and end sync bytes in the data..\n      if (bytes[startIndex] === SYNC_BYTE$1 && bytes[endIndex] === SYNC_BYTE$1) {\n        // We found a packet\n        packet = bytes.subarray(startIndex, endIndex);\n        type = probe$2.ts.parseType(packet, pmt.pid);\n\n        switch (type) {\n          case 'pes':\n            pesType = probe$2.ts.parsePesType(packet, pmt.table);\n            pusi = probe$2.ts.parsePayloadUnitStartIndicator(packet);\n\n            if (pesType === 'video' && pusi) {\n              parsed = probe$2.ts.parsePesTime(packet);\n\n              if (parsed) {\n                parsed.type = 'video';\n                result.video.push(parsed);\n                endLoop = true;\n              }\n            }\n\n            break;\n\n          default:\n            break;\n        }\n\n        if (endLoop) {\n          break;\n        }\n\n        startIndex -= MP2T_PACKET_LENGTH$1;\n        endIndex -= MP2T_PACKET_LENGTH$1;\n        continue;\n      } // If we get here, we have somehow become de-synchronized and we need to step\n      // forward one byte at a time until we find a pair of sync bytes that denote\n      // a packet\n\n\n      startIndex--;\n      endIndex--;\n    }\n  };\n  /**\n   * Adjusts the timestamp information for the segment to account for\n   * rollover and convert to seconds based on pes packet timescale (90khz clock)\n   */\n\n\n  var adjustTimestamp_ = function adjustTimestamp_(segmentInfo, baseTimestamp) {\n    if (segmentInfo.audio && segmentInfo.audio.length) {\n      var audioBaseTimestamp = baseTimestamp;\n\n      if (typeof audioBaseTimestamp === 'undefined') {\n        audioBaseTimestamp = segmentInfo.audio[0].dts;\n      }\n\n      segmentInfo.audio.forEach(function (info) {\n        info.dts = handleRollover$1(info.dts, audioBaseTimestamp);\n        info.pts = handleRollover$1(info.pts, audioBaseTimestamp); // time in seconds\n\n        info.dtsTime = info.dts / PES_TIMESCALE;\n        info.ptsTime = info.pts / PES_TIMESCALE;\n      });\n    }\n\n    if (segmentInfo.video && segmentInfo.video.length) {\n      var videoBaseTimestamp = baseTimestamp;\n\n      if (typeof videoBaseTimestamp === 'undefined') {\n        videoBaseTimestamp = segmentInfo.video[0].dts;\n      }\n\n      segmentInfo.video.forEach(function (info) {\n        info.dts = handleRollover$1(info.dts, videoBaseTimestamp);\n        info.pts = handleRollover$1(info.pts, videoBaseTimestamp); // time in seconds\n\n        info.dtsTime = info.dts / PES_TIMESCALE;\n        info.ptsTime = info.pts / PES_TIMESCALE;\n      });\n\n      if (segmentInfo.firstKeyFrame) {\n        var frame = segmentInfo.firstKeyFrame;\n        frame.dts = handleRollover$1(frame.dts, videoBaseTimestamp);\n        frame.pts = handleRollover$1(frame.pts, videoBaseTimestamp); // time in seconds\n\n        frame.dtsTime = frame.dts / PES_TIMESCALE;\n        frame.ptsTime = frame.dts / PES_TIMESCALE;\n      }\n    }\n  };\n  /**\n   * inspects the aac data stream for start and end time information\n   */\n\n\n  var inspectAac_ = function inspectAac_(bytes) {\n    var endLoop = false,\n        audioCount = 0,\n        sampleRate = null,\n        timestamp = null,\n        frameSize = 0,\n        byteIndex = 0,\n        packet;\n\n    while (bytes.length - byteIndex >= 3) {\n      var type = probe$2.aac.parseType(bytes, byteIndex);\n\n      switch (type) {\n        case 'timed-metadata':\n          // Exit early because we don't have enough to parse\n          // the ID3 tag header\n          if (bytes.length - byteIndex < 10) {\n            endLoop = true;\n            break;\n          }\n\n          frameSize = probe$2.aac.parseId3TagSize(bytes, byteIndex); // Exit early if we don't have enough in the buffer\n          // to emit a full packet\n\n          if (frameSize > bytes.length) {\n            endLoop = true;\n            break;\n          }\n\n          if (timestamp === null) {\n            packet = bytes.subarray(byteIndex, byteIndex + frameSize);\n            timestamp = probe$2.aac.parseAacTimestamp(packet);\n          }\n\n          byteIndex += frameSize;\n          break;\n\n        case 'audio':\n          // Exit early because we don't have enough to parse\n          // the ADTS frame header\n          if (bytes.length - byteIndex < 7) {\n            endLoop = true;\n            break;\n          }\n\n          frameSize = probe$2.aac.parseAdtsSize(bytes, byteIndex); // Exit early if we don't have enough in the buffer\n          // to emit a full packet\n\n          if (frameSize > bytes.length) {\n            endLoop = true;\n            break;\n          }\n\n          if (sampleRate === null) {\n            packet = bytes.subarray(byteIndex, byteIndex + frameSize);\n            sampleRate = probe$2.aac.parseSampleRate(packet);\n          }\n\n          audioCount++;\n          byteIndex += frameSize;\n          break;\n\n        default:\n          byteIndex++;\n          break;\n      }\n\n      if (endLoop) {\n        return null;\n      }\n    }\n\n    if (sampleRate === null || timestamp === null) {\n      return null;\n    }\n\n    var audioTimescale = PES_TIMESCALE / sampleRate;\n    var result = {\n      audio: [{\n        type: 'audio',\n        dts: timestamp,\n        pts: timestamp\n      }, {\n        type: 'audio',\n        dts: timestamp + audioCount * 1024 * audioTimescale,\n        pts: timestamp + audioCount * 1024 * audioTimescale\n      }]\n    };\n    return result;\n  };\n  /**\n   * inspects the transport stream segment data for start and end time information\n   * of the audio and video tracks (when present) as well as the first key frame's\n   * start time.\n   */\n\n\n  var inspectTs_ = function inspectTs_(bytes) {\n    var pmt = {\n      pid: null,\n      table: null\n    };\n    var result = {};\n    parsePsi_(bytes, pmt);\n\n    for (var pid in pmt.table) {\n      if (pmt.table.hasOwnProperty(pid)) {\n        var type = pmt.table[pid];\n\n        switch (type) {\n          case streamTypes.H264_STREAM_TYPE:\n            result.video = [];\n            parseVideoPes_(bytes, pmt, result);\n\n            if (result.video.length === 0) {\n              delete result.video;\n            }\n\n            break;\n\n          case streamTypes.ADTS_STREAM_TYPE:\n            result.audio = [];\n            parseAudioPes_(bytes, pmt, result);\n\n            if (result.audio.length === 0) {\n              delete result.audio;\n            }\n\n            break;\n\n          default:\n            break;\n        }\n      }\n    }\n\n    return result;\n  };\n  /**\n   * Inspects segment byte data and returns an object with start and end timing information\n   *\n   * @param {Uint8Array} bytes The segment byte data\n   * @param {Number} baseTimestamp Relative reference timestamp used when adjusting frame\n   *  timestamps for rollover. This value must be in 90khz clock.\n   * @return {Object} Object containing start and end frame timing info of segment.\n   */\n\n\n  var inspect = function inspect(bytes, baseTimestamp) {\n    var isAacData = probe$2.aac.isLikelyAacData(bytes);\n    var result;\n\n    if (isAacData) {\n      result = inspectAac_(bytes);\n    } else {\n      result = inspectTs_(bytes);\n    }\n\n    if (!result || !result.audio && !result.video) {\n      return null;\n    }\n\n    adjustTimestamp_(result, baseTimestamp);\n    return result;\n  };\n\n  var tsInspector = {\n    inspect: inspect,\n    parseAudioPes_: parseAudioPes_\n  };\n\n  /*\n   * pkcs7.pad\n   * https://github.com/brightcove/pkcs7\n   *\n   * Copyright (c) 2014 Brightcove\n   * Licensed under the apache2 license.\n   */\n  /**\n   * Returns the subarray of a Uint8Array without PKCS#7 padding.\n   * @param padded {Uint8Array} unencrypted bytes that have been padded\n   * @return {Uint8Array} the unpadded bytes\n   * @see http://tools.ietf.org/html/rfc5652\n   */\n\n  function unpad(padded) {\n    return padded.subarray(0, padded.byteLength - padded[padded.byteLength - 1]);\n  }\n\n  var classCallCheck = function classCallCheck(instance, Constructor) {\n    if (!(instance instanceof Constructor)) {\n      throw new TypeError(\"Cannot call a class as a function\");\n    }\n  };\n\n  var createClass = function () {\n    function defineProperties(target, props) {\n      for (var i = 0; i < props.length; i++) {\n        var descriptor = props[i];\n        descriptor.enumerable = descriptor.enumerable || false;\n        descriptor.configurable = true;\n        if (\"value\" in descriptor) descriptor.writable = true;\n        Object.defineProperty(target, descriptor.key, descriptor);\n      }\n    }\n\n    return function (Constructor, protoProps, staticProps) {\n      if (protoProps) defineProperties(Constructor.prototype, protoProps);\n      if (staticProps) defineProperties(Constructor, staticProps);\n      return Constructor;\n    };\n  }();\n\n  var inherits = function inherits(subClass, superClass) {\n    if (typeof superClass !== \"function\" && superClass !== null) {\n      throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass);\n    }\n\n    subClass.prototype = Object.create(superClass && superClass.prototype, {\n      constructor: {\n        value: subClass,\n        enumerable: false,\n        writable: true,\n        configurable: true\n      }\n    });\n    if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass;\n  };\n\n  var possibleConstructorReturn = function possibleConstructorReturn(self, call) {\n    if (!self) {\n      throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\");\n    }\n\n    return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self;\n  };\n  /**\n   * @file aes.js\n   *\n   * This file contains an adaptation of the AES decryption algorithm\n   * from the Standford Javascript Cryptography Library. That work is\n   * covered by the following copyright and permissions notice:\n   *\n   * Copyright 2009-2010 Emily Stark, Mike Hamburg, Dan Boneh.\n   * All rights reserved.\n   *\n   * Redistribution and use in source and binary forms, with or without\n   * modification, are permitted provided that the following conditions are\n   * met:\n   *\n   * 1. Redistributions of source code must retain the above copyright\n   *    notice, this list of conditions and the following disclaimer.\n   *\n   * 2. Redistributions in binary form must reproduce the above\n   *    copyright notice, this list of conditions and the following\n   *    disclaimer in the documentation and/or other materials provided\n   *    with the distribution.\n   *\n   * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR\n   * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED\n   * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE\n   * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> OR CONTRIBUTORS BE\n   * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR\n   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF\n   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR\n   * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,\n   * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE\n   * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN\n   * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n   *\n   * The views and conclusions contained in the software and documentation\n   * are those of the authors and should not be interpreted as representing\n   * official policies, either expressed or implied, of the authors.\n   */\n\n  /**\n   * Expand the S-box tables.\n   *\n   * @private\n   */\n\n\n  var precompute = function precompute() {\n    var tables = [[[], [], [], [], []], [[], [], [], [], []]];\n    var encTable = tables[0];\n    var decTable = tables[1];\n    var sbox = encTable[4];\n    var sboxInv = decTable[4];\n    var i = void 0;\n    var x = void 0;\n    var xInv = void 0;\n    var d = [];\n    var th = [];\n    var x2 = void 0;\n    var x4 = void 0;\n    var x8 = void 0;\n    var s = void 0;\n    var tEnc = void 0;\n    var tDec = void 0; // Compute double and third tables\n\n    for (i = 0; i < 256; i++) {\n      th[(d[i] = i << 1 ^ (i >> 7) * 283) ^ i] = i;\n    }\n\n    for (x = xInv = 0; !sbox[x]; x ^= x2 || 1, xInv = th[xInv] || 1) {\n      // Compute sbox\n      s = xInv ^ xInv << 1 ^ xInv << 2 ^ xInv << 3 ^ xInv << 4;\n      s = s >> 8 ^ s & 255 ^ 99;\n      sbox[x] = s;\n      sboxInv[s] = x; // Compute MixColumns\n\n      x8 = d[x4 = d[x2 = d[x]]];\n      tDec = x8 * 0x1010101 ^ x4 * 0x10001 ^ x2 * 0x101 ^ x * 0x1010100;\n      tEnc = d[s] * 0x101 ^ s * 0x1010100;\n\n      for (i = 0; i < 4; i++) {\n        encTable[i][x] = tEnc = tEnc << 24 ^ tEnc >>> 8;\n        decTable[i][s] = tDec = tDec << 24 ^ tDec >>> 8;\n      }\n    } // Compactify. Considerable speedup on Firefox.\n\n\n    for (i = 0; i < 5; i++) {\n      encTable[i] = encTable[i].slice(0);\n      decTable[i] = decTable[i].slice(0);\n    }\n\n    return tables;\n  };\n\n  var aesTables = null;\n  /**\n   * Schedule out an AES key for both encryption and decryption. This\n   * is a low-level class. Use a cipher mode to do bulk encryption.\n   *\n   * @class AES\n   * @param key {Array} The key as an array of 4, 6 or 8 words.\n   */\n\n  var AES = function () {\n    function AES(key) {\n      classCallCheck(this, AES);\n      /**\n       * The expanded S-box and inverse S-box tables. These will be computed\n       * on the client so that we don't have to send them down the wire.\n       *\n       * There are two tables, _tables[0] is for encryption and\n       * _tables[1] is for decryption.\n       *\n       * The first 4 sub-tables are the expanded S-box with MixColumns. The\n       * last (_tables[01][4]) is the S-box itself.\n       *\n       * @private\n       */\n      // if we have yet to precompute the S-box tables\n      // do so now\n\n      if (!aesTables) {\n        aesTables = precompute();\n      } // then make a copy of that object for use\n\n\n      this._tables = [[aesTables[0][0].slice(), aesTables[0][1].slice(), aesTables[0][2].slice(), aesTables[0][3].slice(), aesTables[0][4].slice()], [aesTables[1][0].slice(), aesTables[1][1].slice(), aesTables[1][2].slice(), aesTables[1][3].slice(), aesTables[1][4].slice()]];\n      var i = void 0;\n      var j = void 0;\n      var tmp = void 0;\n      var encKey = void 0;\n      var decKey = void 0;\n      var sbox = this._tables[0][4];\n      var decTable = this._tables[1];\n      var keyLen = key.length;\n      var rcon = 1;\n\n      if (keyLen !== 4 && keyLen !== 6 && keyLen !== 8) {\n        throw new Error('Invalid aes key size');\n      }\n\n      encKey = key.slice(0);\n      decKey = [];\n      this._key = [encKey, decKey]; // schedule encryption keys\n\n      for (i = keyLen; i < 4 * keyLen + 28; i++) {\n        tmp = encKey[i - 1]; // apply sbox\n\n        if (i % keyLen === 0 || keyLen === 8 && i % keyLen === 4) {\n          tmp = sbox[tmp >>> 24] << 24 ^ sbox[tmp >> 16 & 255] << 16 ^ sbox[tmp >> 8 & 255] << 8 ^ sbox[tmp & 255]; // shift rows and add rcon\n\n          if (i % keyLen === 0) {\n            tmp = tmp << 8 ^ tmp >>> 24 ^ rcon << 24;\n            rcon = rcon << 1 ^ (rcon >> 7) * 283;\n          }\n        }\n\n        encKey[i] = encKey[i - keyLen] ^ tmp;\n      } // schedule decryption keys\n\n\n      for (j = 0; i; j++, i--) {\n        tmp = encKey[j & 3 ? i : i - 4];\n\n        if (i <= 4 || j < 4) {\n          decKey[j] = tmp;\n        } else {\n          decKey[j] = decTable[0][sbox[tmp >>> 24]] ^ decTable[1][sbox[tmp >> 16 & 255]] ^ decTable[2][sbox[tmp >> 8 & 255]] ^ decTable[3][sbox[tmp & 255]];\n        }\n      }\n    }\n    /**\n     * Decrypt 16 bytes, specified as four 32-bit words.\n     *\n     * @param {Number} encrypted0 the first word to decrypt\n     * @param {Number} encrypted1 the second word to decrypt\n     * @param {Number} encrypted2 the third word to decrypt\n     * @param {Number} encrypted3 the fourth word to decrypt\n     * @param {Int32Array} out the array to write the decrypted words\n     * into\n     * @param {Number} offset the offset into the output array to start\n     * writing results\n     * @return {Array} The plaintext.\n     */\n\n\n    AES.prototype.decrypt = function decrypt(encrypted0, encrypted1, encrypted2, encrypted3, out, offset) {\n      var key = this._key[1]; // state variables a,b,c,d are loaded with pre-whitened data\n\n      var a = encrypted0 ^ key[0];\n      var b = encrypted3 ^ key[1];\n      var c = encrypted2 ^ key[2];\n      var d = encrypted1 ^ key[3];\n      var a2 = void 0;\n      var b2 = void 0;\n      var c2 = void 0; // key.length === 2 ?\n\n      var nInnerRounds = key.length / 4 - 2;\n      var i = void 0;\n      var kIndex = 4;\n      var table = this._tables[1]; // load up the tables\n\n      var table0 = table[0];\n      var table1 = table[1];\n      var table2 = table[2];\n      var table3 = table[3];\n      var sbox = table[4]; // Inner rounds. Cribbed from OpenSSL.\n\n      for (i = 0; i < nInnerRounds; i++) {\n        a2 = table0[a >>> 24] ^ table1[b >> 16 & 255] ^ table2[c >> 8 & 255] ^ table3[d & 255] ^ key[kIndex];\n        b2 = table0[b >>> 24] ^ table1[c >> 16 & 255] ^ table2[d >> 8 & 255] ^ table3[a & 255] ^ key[kIndex + 1];\n        c2 = table0[c >>> 24] ^ table1[d >> 16 & 255] ^ table2[a >> 8 & 255] ^ table3[b & 255] ^ key[kIndex + 2];\n        d = table0[d >>> 24] ^ table1[a >> 16 & 255] ^ table2[b >> 8 & 255] ^ table3[c & 255] ^ key[kIndex + 3];\n        kIndex += 4;\n        a = a2;\n        b = b2;\n        c = c2;\n      } // Last round.\n\n\n      for (i = 0; i < 4; i++) {\n        out[(3 & -i) + offset] = sbox[a >>> 24] << 24 ^ sbox[b >> 16 & 255] << 16 ^ sbox[c >> 8 & 255] << 8 ^ sbox[d & 255] ^ key[kIndex++];\n        a2 = a;\n        a = b;\n        b = c;\n        c = d;\n        d = a2;\n      }\n    };\n\n    return AES;\n  }();\n  /**\n   * @file stream.js\n   */\n\n  /**\n   * A lightweight readable stream implemention that handles event dispatching.\n   *\n   * @class Stream\n   */\n\n\n  var Stream$2 = function () {\n    function Stream() {\n      classCallCheck(this, Stream);\n      this.listeners = {};\n    }\n    /**\n     * Add a listener for a specified event type.\n     *\n     * @param {String} type the event name\n     * @param {Function} listener the callback to be invoked when an event of\n     * the specified type occurs\n     */\n\n\n    Stream.prototype.on = function on(type, listener) {\n      if (!this.listeners[type]) {\n        this.listeners[type] = [];\n      }\n\n      this.listeners[type].push(listener);\n    };\n    /**\n     * Remove a listener for a specified event type.\n     *\n     * @param {String} type the event name\n     * @param {Function} listener  a function previously registered for this\n     * type of event through `on`\n     * @return {Boolean} if we could turn it off or not\n     */\n\n\n    Stream.prototype.off = function off(type, listener) {\n      if (!this.listeners[type]) {\n        return false;\n      }\n\n      var index = this.listeners[type].indexOf(listener);\n      this.listeners[type].splice(index, 1);\n      return index > -1;\n    };\n    /**\n     * Trigger an event of the specified type on this stream. Any additional\n     * arguments to this function are passed as parameters to event listeners.\n     *\n     * @param {String} type the event name\n     */\n\n\n    Stream.prototype.trigger = function trigger(type) {\n      var callbacks = this.listeners[type];\n\n      if (!callbacks) {\n        return;\n      } // Slicing the arguments on every invocation of this method\n      // can add a significant amount of overhead. Avoid the\n      // intermediate object creation for the common case of a\n      // single callback argument\n\n\n      if (arguments.length === 2) {\n        var length = callbacks.length;\n\n        for (var i = 0; i < length; ++i) {\n          callbacks[i].call(this, arguments[1]);\n        }\n      } else {\n        var args = Array.prototype.slice.call(arguments, 1);\n        var _length = callbacks.length;\n\n        for (var _i = 0; _i < _length; ++_i) {\n          callbacks[_i].apply(this, args);\n        }\n      }\n    };\n    /**\n     * Destroys the stream and cleans up.\n     */\n\n\n    Stream.prototype.dispose = function dispose() {\n      this.listeners = {};\n    };\n    /**\n     * Forwards all `data` events on this stream to the destination stream. The\n     * destination stream should provide a method `push` to receive the data\n     * events as they arrive.\n     *\n     * @param {Stream} destination the stream that will receive all `data` events\n     * @see http://nodejs.org/api/stream.html#stream_readable_pipe_destination_options\n     */\n\n\n    Stream.prototype.pipe = function pipe(destination) {\n      this.on('data', function (data) {\n        destination.push(data);\n      });\n    };\n\n    return Stream;\n  }();\n  /**\n   * @file async-stream.js\n   */\n\n  /**\n   * A wrapper around the Stream class to use setTiemout\n   * and run stream \"jobs\" Asynchronously\n   *\n   * @class AsyncStream\n   * @extends Stream\n   */\n\n\n  var AsyncStream = function (_Stream) {\n    inherits(AsyncStream, _Stream);\n\n    function AsyncStream() {\n      classCallCheck(this, AsyncStream);\n\n      var _this = possibleConstructorReturn(this, _Stream.call(this, Stream$2));\n\n      _this.jobs = [];\n      _this.delay = 1;\n      _this.timeout_ = null;\n      return _this;\n    }\n    /**\n     * process an async job\n     *\n     * @private\n     */\n\n\n    AsyncStream.prototype.processJob_ = function processJob_() {\n      this.jobs.shift()();\n\n      if (this.jobs.length) {\n        this.timeout_ = setTimeout(this.processJob_.bind(this), this.delay);\n      } else {\n        this.timeout_ = null;\n      }\n    };\n    /**\n     * push a job into the stream\n     *\n     * @param {Function} job the job to push into the stream\n     */\n\n\n    AsyncStream.prototype.push = function push(job) {\n      this.jobs.push(job);\n\n      if (!this.timeout_) {\n        this.timeout_ = setTimeout(this.processJob_.bind(this), this.delay);\n      }\n    };\n\n    return AsyncStream;\n  }(Stream$2);\n  /**\n   * @file decrypter.js\n   *\n   * An asynchronous implementation of AES-128 CBC decryption with\n   * PKCS#7 padding.\n   */\n\n  /**\n   * Convert network-order (big-endian) bytes into their little-endian\n   * representation.\n   */\n\n\n  var ntoh = function ntoh(word) {\n    return word << 24 | (word & 0xff00) << 8 | (word & 0xff0000) >> 8 | word >>> 24;\n  };\n  /**\n   * Decrypt bytes using AES-128 with CBC and PKCS#7 padding.\n   *\n   * @param {Uint8Array} encrypted the encrypted bytes\n   * @param {Uint32Array} key the bytes of the decryption key\n   * @param {Uint32Array} initVector the initialization vector (IV) to\n   * use for the first round of CBC.\n   * @return {Uint8Array} the decrypted bytes\n   *\n   * @see http://en.wikipedia.org/wiki/Advanced_Encryption_Standard\n   * @see http://en.wikipedia.org/wiki/Block_cipher_mode_of_operation#Cipher_Block_Chaining_.28CBC.29\n   * @see https://tools.ietf.org/html/rfc2315\n   */\n\n\n  var decrypt = function decrypt(encrypted, key, initVector) {\n    // word-level access to the encrypted bytes\n    var encrypted32 = new Int32Array(encrypted.buffer, encrypted.byteOffset, encrypted.byteLength >> 2);\n    var decipher = new AES(Array.prototype.slice.call(key)); // byte and word-level access for the decrypted output\n\n    var decrypted = new Uint8Array(encrypted.byteLength);\n    var decrypted32 = new Int32Array(decrypted.buffer); // temporary variables for working with the IV, encrypted, and\n    // decrypted data\n\n    var init0 = void 0;\n    var init1 = void 0;\n    var init2 = void 0;\n    var init3 = void 0;\n    var encrypted0 = void 0;\n    var encrypted1 = void 0;\n    var encrypted2 = void 0;\n    var encrypted3 = void 0; // iteration variable\n\n    var wordIx = void 0; // pull out the words of the IV to ensure we don't modify the\n    // passed-in reference and easier access\n\n    init0 = initVector[0];\n    init1 = initVector[1];\n    init2 = initVector[2];\n    init3 = initVector[3]; // decrypt four word sequences, applying cipher-block chaining (CBC)\n    // to each decrypted block\n\n    for (wordIx = 0; wordIx < encrypted32.length; wordIx += 4) {\n      // convert big-endian (network order) words into little-endian\n      // (javascript order)\n      encrypted0 = ntoh(encrypted32[wordIx]);\n      encrypted1 = ntoh(encrypted32[wordIx + 1]);\n      encrypted2 = ntoh(encrypted32[wordIx + 2]);\n      encrypted3 = ntoh(encrypted32[wordIx + 3]); // decrypt the block\n\n      decipher.decrypt(encrypted0, encrypted1, encrypted2, encrypted3, decrypted32, wordIx); // XOR with the IV, and restore network byte-order to obtain the\n      // plaintext\n\n      decrypted32[wordIx] = ntoh(decrypted32[wordIx] ^ init0);\n      decrypted32[wordIx + 1] = ntoh(decrypted32[wordIx + 1] ^ init1);\n      decrypted32[wordIx + 2] = ntoh(decrypted32[wordIx + 2] ^ init2);\n      decrypted32[wordIx + 3] = ntoh(decrypted32[wordIx + 3] ^ init3); // setup the IV for the next round\n\n      init0 = encrypted0;\n      init1 = encrypted1;\n      init2 = encrypted2;\n      init3 = encrypted3;\n    }\n\n    return decrypted;\n  };\n  /**\n   * The `Decrypter` class that manages decryption of AES\n   * data through `AsyncStream` objects and the `decrypt`\n   * function\n   *\n   * @param {Uint8Array} encrypted the encrypted bytes\n   * @param {Uint32Array} key the bytes of the decryption key\n   * @param {Uint32Array} initVector the initialization vector (IV) to\n   * @param {Function} done the function to run when done\n   * @class Decrypter\n   */\n\n\n  var Decrypter = function () {\n    function Decrypter(encrypted, key, initVector, done) {\n      classCallCheck(this, Decrypter);\n      var step = Decrypter.STEP;\n      var encrypted32 = new Int32Array(encrypted.buffer);\n      var decrypted = new Uint8Array(encrypted.byteLength);\n      var i = 0;\n      this.asyncStream_ = new AsyncStream(); // split up the encryption job and do the individual chunks asynchronously\n\n      this.asyncStream_.push(this.decryptChunk_(encrypted32.subarray(i, i + step), key, initVector, decrypted));\n\n      for (i = step; i < encrypted32.length; i += step) {\n        initVector = new Uint32Array([ntoh(encrypted32[i - 4]), ntoh(encrypted32[i - 3]), ntoh(encrypted32[i - 2]), ntoh(encrypted32[i - 1])]);\n        this.asyncStream_.push(this.decryptChunk_(encrypted32.subarray(i, i + step), key, initVector, decrypted));\n      } // invoke the done() callback when everything is finished\n\n\n      this.asyncStream_.push(function () {\n        // remove pkcs#7 padding from the decrypted bytes\n        done(null, unpad(decrypted));\n      });\n    }\n    /**\n     * a getter for step the maximum number of bytes to process at one time\n     *\n     * @return {Number} the value of step 32000\n     */\n\n    /**\n     * @private\n     */\n\n\n    Decrypter.prototype.decryptChunk_ = function decryptChunk_(encrypted, key, initVector, decrypted) {\n      return function () {\n        var bytes = decrypt(encrypted, key, initVector);\n        decrypted.set(bytes, encrypted.byteOffset);\n      };\n    };\n\n    createClass(Decrypter, null, [{\n      key: 'STEP',\n      get: function get$$1() {\n        // 4 * 8000;\n        return 32000;\n      }\n    }]);\n    return Decrypter;\n  }();\n\n  /**\n   * @videojs/http-streaming\n   * @version 1.8.0\n   * @copyright 2019 Brightcove, Inc\n   * @license Apache-2.0\n   */\n  /**\n   * @file resolve-url.js\n   */\n\n  var resolveUrl$1 = function resolveUrl(baseURL, relativeURL) {\n    // return early if we don't need to resolve\n    if (/^[a-z]+:/i.test(relativeURL)) {\n      return relativeURL;\n    } // if the base URL is relative then combine with the current location\n\n\n    if (!/\\/\\//i.test(baseURL)) {\n      baseURL = urlToolkit.buildAbsoluteURL(window$1.location.href, baseURL);\n    }\n\n    return urlToolkit.buildAbsoluteURL(baseURL, relativeURL);\n  };\n\n  var classCallCheck$1 = function classCallCheck(instance, Constructor) {\n    if (!(instance instanceof Constructor)) {\n      throw new TypeError(\"Cannot call a class as a function\");\n    }\n  };\n\n  var createClass$1 = function () {\n    function defineProperties(target, props) {\n      for (var i = 0; i < props.length; i++) {\n        var descriptor = props[i];\n        descriptor.enumerable = descriptor.enumerable || false;\n        descriptor.configurable = true;\n        if (\"value\" in descriptor) descriptor.writable = true;\n        Object.defineProperty(target, descriptor.key, descriptor);\n      }\n    }\n\n    return function (Constructor, protoProps, staticProps) {\n      if (protoProps) defineProperties(Constructor.prototype, protoProps);\n      if (staticProps) defineProperties(Constructor, staticProps);\n      return Constructor;\n    };\n  }();\n\n  var get$1 = function get(object, property, receiver) {\n    if (object === null) object = Function.prototype;\n    var desc = Object.getOwnPropertyDescriptor(object, property);\n\n    if (desc === undefined) {\n      var parent = Object.getPrototypeOf(object);\n\n      if (parent === null) {\n        return undefined;\n      } else {\n        return get(parent, property, receiver);\n      }\n    } else if (\"value\" in desc) {\n      return desc.value;\n    } else {\n      var getter = desc.get;\n\n      if (getter === undefined) {\n        return undefined;\n      }\n\n      return getter.call(receiver);\n    }\n  };\n\n  var inherits$1 = function inherits(subClass, superClass) {\n    if (typeof superClass !== \"function\" && superClass !== null) {\n      throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass);\n    }\n\n    subClass.prototype = Object.create(superClass && superClass.prototype, {\n      constructor: {\n        value: subClass,\n        enumerable: false,\n        writable: true,\n        configurable: true\n      }\n    });\n    if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass;\n  };\n\n  var possibleConstructorReturn$1 = function possibleConstructorReturn(self, call) {\n    if (!self) {\n      throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\");\n    }\n\n    return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self;\n  };\n\n  var slicedToArray = function () {\n    function sliceIterator(arr, i) {\n      var _arr = [];\n      var _n = true;\n      var _d = false;\n      var _e = undefined;\n\n      try {\n        for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) {\n          _arr.push(_s.value);\n\n          if (i && _arr.length === i) break;\n        }\n      } catch (err) {\n        _d = true;\n        _e = err;\n      } finally {\n        try {\n          if (!_n && _i[\"return\"]) _i[\"return\"]();\n        } finally {\n          if (_d) throw _e;\n        }\n      }\n\n      return _arr;\n    }\n\n    return function (arr, i) {\n      if (Array.isArray(arr)) {\n        return arr;\n      } else if (Symbol.iterator in Object(arr)) {\n        return sliceIterator(arr, i);\n      } else {\n        throw new TypeError(\"Invalid attempt to destructure non-iterable instance\");\n      }\n    };\n  }();\n  /**\n   * @file playlist-loader.js\n   *\n   * A state machine that manages the loading, caching, and updating of\n   * M3U8 playlists.\n   *\n   */\n\n\n  var mergeOptions$1 = videojs$1.mergeOptions,\n      EventTarget$1 = videojs$1.EventTarget,\n      log$1 = videojs$1.log;\n  /**\n   * Loops through all supported media groups in master and calls the provided\n   * callback for each group\n   *\n   * @param {Object} master\n   *        The parsed master manifest object\n   * @param {Function} callback\n   *        Callback to call for each media group\n   */\n\n  var forEachMediaGroup = function forEachMediaGroup(master, callback) {\n    ['AUDIO', 'SUBTITLES'].forEach(function (mediaType) {\n      for (var groupKey in master.mediaGroups[mediaType]) {\n        for (var labelKey in master.mediaGroups[mediaType][groupKey]) {\n          var mediaProperties = master.mediaGroups[mediaType][groupKey][labelKey];\n          callback(mediaProperties, mediaType, groupKey, labelKey);\n        }\n      }\n    });\n  };\n  /**\n    * Returns a new array of segments that is the result of merging\n    * properties from an older list of segments onto an updated\n    * list. No properties on the updated playlist will be overridden.\n    *\n    * @param {Array} original the outdated list of segments\n    * @param {Array} update the updated list of segments\n    * @param {Number=} offset the index of the first update\n    * segment in the original segment list. For non-live playlists,\n    * this should always be zero and does not need to be\n    * specified. For live playlists, it should be the difference\n    * between the media sequence numbers in the original and updated\n    * playlists.\n    * @return a list of merged segment objects\n    */\n\n\n  var updateSegments = function updateSegments(original, update, offset) {\n    var result = update.slice();\n    offset = offset || 0;\n    var length = Math.min(original.length, update.length + offset);\n\n    for (var i = offset; i < length; i++) {\n      result[i - offset] = mergeOptions$1(original[i], result[i - offset]);\n    }\n\n    return result;\n  };\n\n  var resolveSegmentUris = function resolveSegmentUris(segment, baseUri) {\n    if (!segment.resolvedUri) {\n      segment.resolvedUri = resolveUrl$1(baseUri, segment.uri);\n    }\n\n    if (segment.key && !segment.key.resolvedUri) {\n      segment.key.resolvedUri = resolveUrl$1(baseUri, segment.key.uri);\n    }\n\n    if (segment.map && !segment.map.resolvedUri) {\n      segment.map.resolvedUri = resolveUrl$1(baseUri, segment.map.uri);\n    }\n  };\n  /**\n    * Returns a new master playlist that is the result of merging an\n    * updated media playlist into the original version. If the\n    * updated media playlist does not match any of the playlist\n    * entries in the original master playlist, null is returned.\n    *\n    * @param {Object} master a parsed master M3U8 object\n    * @param {Object} media a parsed media M3U8 object\n    * @return {Object} a new object that represents the original\n    * master playlist with the updated media playlist merged in, or\n    * null if the merge produced no change.\n    */\n\n\n  var updateMaster = function updateMaster(master, media) {\n    var result = mergeOptions$1(master, {});\n    var playlist = result.playlists[media.uri];\n\n    if (!playlist) {\n      return null;\n    } // consider the playlist unchanged if the number of segments is equal and the media\n    // sequence number is unchanged\n\n\n    if (playlist.segments && media.segments && playlist.segments.length === media.segments.length && playlist.mediaSequence === media.mediaSequence) {\n      return null;\n    }\n\n    var mergedPlaylist = mergeOptions$1(playlist, media); // if the update could overlap existing segment information, merge the two segment lists\n\n    if (playlist.segments) {\n      mergedPlaylist.segments = updateSegments(playlist.segments, media.segments, media.mediaSequence - playlist.mediaSequence);\n    } // resolve any segment URIs to prevent us from having to do it later\n\n\n    mergedPlaylist.segments.forEach(function (segment) {\n      resolveSegmentUris(segment, mergedPlaylist.resolvedUri);\n    }); // TODO Right now in the playlists array there are two references to each playlist, one\n    // that is referenced by index, and one by URI. The index reference may no longer be\n    // necessary.\n\n    for (var i = 0; i < result.playlists.length; i++) {\n      if (result.playlists[i].uri === media.uri) {\n        result.playlists[i] = mergedPlaylist;\n      }\n    }\n\n    result.playlists[media.uri] = mergedPlaylist;\n    return result;\n  };\n\n  var setupMediaPlaylists = function setupMediaPlaylists(master) {\n    // setup by-URI lookups and resolve media playlist URIs\n    var i = master.playlists.length;\n\n    while (i--) {\n      var playlist = master.playlists[i];\n      master.playlists[playlist.uri] = playlist;\n      playlist.resolvedUri = resolveUrl$1(master.uri, playlist.uri);\n      playlist.id = i;\n\n      if (!playlist.attributes) {\n        // Although the spec states an #EXT-X-STREAM-INF tag MUST have a\n        // BANDWIDTH attribute, we can play the stream without it. This means a poorly\n        // formatted master playlist may not have an attribute list. An attributes\n        // property is added here to prevent undefined references when we encounter\n        // this scenario.\n        playlist.attributes = {};\n        log$1.warn('Invalid playlist STREAM-INF detected. Missing BANDWIDTH attribute.');\n      }\n    }\n  };\n\n  var resolveMediaGroupUris = function resolveMediaGroupUris(master) {\n    forEachMediaGroup(master, function (properties) {\n      if (properties.uri) {\n        properties.resolvedUri = resolveUrl$1(master.uri, properties.uri);\n      }\n    });\n  };\n  /**\n   * Calculates the time to wait before refreshing a live playlist\n   *\n   * @param {Object} media\n   *        The current media\n   * @param {Boolean} update\n   *        True if there were any updates from the last refresh, false otherwise\n   * @return {Number}\n   *         The time in ms to wait before refreshing the live playlist\n   */\n\n\n  var refreshDelay = function refreshDelay(media, update) {\n    var lastSegment = media.segments[media.segments.length - 1];\n    var delay = void 0;\n\n    if (update && lastSegment && lastSegment.duration) {\n      delay = lastSegment.duration * 1000;\n    } else {\n      // if the playlist is unchanged since the last reload or last segment duration\n      // cannot be determined, try again after half the target duration\n      delay = (media.targetDuration || 10) * 500;\n    }\n\n    return delay;\n  };\n  /**\n   * Load a playlist from a remote location\n   *\n   * @class PlaylistLoader\n   * @extends Stream\n   * @param {String} srcUrl the url to start with\n   * @param {Boolean} withCredentials the withCredentials xhr option\n   * @constructor\n   */\n\n\n  var PlaylistLoader = function (_EventTarget) {\n    inherits$1(PlaylistLoader, _EventTarget);\n\n    function PlaylistLoader(srcUrl, hls, withCredentials) {\n      classCallCheck$1(this, PlaylistLoader);\n\n      var _this = possibleConstructorReturn$1(this, (PlaylistLoader.__proto__ || Object.getPrototypeOf(PlaylistLoader)).call(this));\n\n      _this.srcUrl = srcUrl;\n      _this.hls_ = hls;\n      _this.withCredentials = withCredentials;\n      var options = hls.options_;\n      _this.customTagParsers = options && options.customTagParsers || [];\n      _this.customTagMappers = options && options.customTagMappers || [];\n\n      if (!_this.srcUrl) {\n        throw new Error('A non-empty playlist URL is required');\n      } // initialize the loader state\n\n\n      _this.state = 'HAVE_NOTHING'; // live playlist staleness timeout\n\n      _this.on('mediaupdatetimeout', function () {\n        if (_this.state !== 'HAVE_METADATA') {\n          // only refresh the media playlist if no other activity is going on\n          return;\n        }\n\n        _this.state = 'HAVE_CURRENT_METADATA';\n        _this.request = _this.hls_.xhr({\n          uri: resolveUrl$1(_this.master.uri, _this.media().uri),\n          withCredentials: _this.withCredentials\n        }, function (error, req) {\n          // disposed\n          if (!_this.request) {\n            return;\n          }\n\n          if (error) {\n            return _this.playlistRequestError(_this.request, _this.media().uri, 'HAVE_METADATA');\n          }\n\n          _this.haveMetadata(_this.request, _this.media().uri);\n        });\n      });\n\n      return _this;\n    }\n\n    createClass$1(PlaylistLoader, [{\n      key: 'playlistRequestError',\n      value: function playlistRequestError(xhr, url, startingState) {\n        // any in-flight request is now finished\n        this.request = null;\n\n        if (startingState) {\n          this.state = startingState;\n        }\n\n        this.error = {\n          playlist: this.master.playlists[url],\n          status: xhr.status,\n          message: 'HLS playlist request error at URL: ' + url,\n          responseText: xhr.responseText,\n          code: xhr.status >= 500 ? 4 : 2\n        };\n        this.trigger('error');\n      } // update the playlist loader's state in response to a new or\n      // updated playlist.\n\n    }, {\n      key: 'haveMetadata',\n      value: function haveMetadata(xhr, url) {\n        var _this2 = this; // any in-flight request is now finished\n\n\n        this.request = null;\n        this.state = 'HAVE_METADATA';\n        var parser = new Parser(); // adding custom tag parsers\n\n        this.customTagParsers.forEach(function (customParser) {\n          return parser.addParser(customParser);\n        }); // adding custom tag mappers\n\n        this.customTagMappers.forEach(function (mapper) {\n          return parser.addTagMapper(mapper);\n        });\n        parser.push(xhr.responseText);\n        parser.end();\n        parser.manifest.uri = url; // m3u8-parser does not attach an attributes property to media playlists so make\n        // sure that the property is attached to avoid undefined reference errors\n\n        parser.manifest.attributes = parser.manifest.attributes || {}; // merge this playlist into the master\n\n        var update = updateMaster(this.master, parser.manifest);\n        this.targetDuration = parser.manifest.targetDuration;\n\n        if (update) {\n          this.master = update;\n          this.media_ = this.master.playlists[parser.manifest.uri];\n        } else {\n          this.trigger('playlistunchanged');\n        } // refresh live playlists after a target duration passes\n\n\n        if (!this.media().endList) {\n          window$1.clearTimeout(this.mediaUpdateTimeout);\n          this.mediaUpdateTimeout = window$1.setTimeout(function () {\n            _this2.trigger('mediaupdatetimeout');\n          }, refreshDelay(this.media(), !!update));\n        }\n\n        this.trigger('loadedplaylist');\n      }\n      /**\n       * Abort any outstanding work and clean up.\n       */\n\n    }, {\n      key: 'dispose',\n      value: function dispose() {\n        this.stopRequest();\n        window$1.clearTimeout(this.mediaUpdateTimeout);\n      }\n    }, {\n      key: 'stopRequest',\n      value: function stopRequest() {\n        if (this.request) {\n          var oldRequest = this.request;\n          this.request = null;\n          oldRequest.onreadystatechange = null;\n          oldRequest.abort();\n        }\n      }\n      /**\n       * When called without any arguments, returns the currently\n       * active media playlist. When called with a single argument,\n       * triggers the playlist loader to asynchronously switch to the\n       * specified media playlist. Calling this method while the\n       * loader is in the HAVE_NOTHING causes an error to be emitted\n       * but otherwise has no effect.\n       *\n       * @param {Object=} playlist the parsed media playlist\n       * object to switch to\n       * @return {Playlist} the current loaded media\n       */\n\n    }, {\n      key: 'media',\n      value: function media(playlist) {\n        var _this3 = this; // getter\n\n\n        if (!playlist) {\n          return this.media_;\n        } // setter\n\n\n        if (this.state === 'HAVE_NOTHING') {\n          throw new Error('Cannot switch media playlist from ' + this.state);\n        }\n\n        var startingState = this.state; // find the playlist object if the target playlist has been\n        // specified by URI\n\n        if (typeof playlist === 'string') {\n          if (!this.master.playlists[playlist]) {\n            throw new Error('Unknown playlist URI: ' + playlist);\n          }\n\n          playlist = this.master.playlists[playlist];\n        }\n\n        var mediaChange = !this.media_ || playlist.uri !== this.media_.uri; // switch to fully loaded playlists immediately\n\n        if (this.master.playlists[playlist.uri].endList) {\n          // abort outstanding playlist requests\n          if (this.request) {\n            this.request.onreadystatechange = null;\n            this.request.abort();\n            this.request = null;\n          }\n\n          this.state = 'HAVE_METADATA';\n          this.media_ = playlist; // trigger media change if the active media has been updated\n\n          if (mediaChange) {\n            this.trigger('mediachanging');\n            this.trigger('mediachange');\n          }\n\n          return;\n        } // switching to the active playlist is a no-op\n\n\n        if (!mediaChange) {\n          return;\n        }\n\n        this.state = 'SWITCHING_MEDIA'; // there is already an outstanding playlist request\n\n        if (this.request) {\n          if (resolveUrl$1(this.master.uri, playlist.uri) === this.request.url) {\n            // requesting to switch to the same playlist multiple times\n            // has no effect after the first\n            return;\n          }\n\n          this.request.onreadystatechange = null;\n          this.request.abort();\n          this.request = null;\n        } // request the new playlist\n\n\n        if (this.media_) {\n          this.trigger('mediachanging');\n        }\n\n        this.request = this.hls_.xhr({\n          uri: resolveUrl$1(this.master.uri, playlist.uri),\n          withCredentials: this.withCredentials\n        }, function (error, req) {\n          // disposed\n          if (!_this3.request) {\n            return;\n          }\n\n          if (error) {\n            return _this3.playlistRequestError(_this3.request, playlist.uri, startingState);\n          }\n\n          _this3.haveMetadata(req, playlist.uri); // fire loadedmetadata the first time a media playlist is loaded\n\n\n          if (startingState === 'HAVE_MASTER') {\n            _this3.trigger('loadedmetadata');\n          } else {\n            _this3.trigger('mediachange');\n          }\n        });\n      }\n      /**\n       * pause loading of the playlist\n       */\n\n    }, {\n      key: 'pause',\n      value: function pause() {\n        this.stopRequest();\n        window$1.clearTimeout(this.mediaUpdateTimeout);\n\n        if (this.state === 'HAVE_NOTHING') {\n          // If we pause the loader before any data has been retrieved, its as if we never\n          // started, so reset to an unstarted state.\n          this.started = false;\n        } // Need to restore state now that no activity is happening\n\n\n        if (this.state === 'SWITCHING_MEDIA') {\n          // if the loader was in the process of switching media, it should either return to\n          // HAVE_MASTER or HAVE_METADATA depending on if the loader has loaded a media\n          // playlist yet. This is determined by the existence of loader.media_\n          if (this.media_) {\n            this.state = 'HAVE_METADATA';\n          } else {\n            this.state = 'HAVE_MASTER';\n          }\n        } else if (this.state === 'HAVE_CURRENT_METADATA') {\n          this.state = 'HAVE_METADATA';\n        }\n      }\n      /**\n       * start loading of the playlist\n       */\n\n    }, {\n      key: 'load',\n      value: function load(isFinalRendition) {\n        var _this4 = this;\n\n        window$1.clearTimeout(this.mediaUpdateTimeout);\n        var media = this.media();\n\n        if (isFinalRendition) {\n          var delay = media ? media.targetDuration / 2 * 1000 : 5 * 1000;\n          this.mediaUpdateTimeout = window$1.setTimeout(function () {\n            return _this4.load();\n          }, delay);\n          return;\n        }\n\n        if (!this.started) {\n          this.start();\n          return;\n        }\n\n        if (media && !media.endList) {\n          this.trigger('mediaupdatetimeout');\n        } else {\n          this.trigger('loadedplaylist');\n        }\n      }\n      /**\n       * start loading of the playlist\n       */\n\n    }, {\n      key: 'start',\n      value: function start() {\n        var _this5 = this;\n\n        this.started = true; // request the specified URL\n\n        this.request = this.hls_.xhr({\n          uri: this.srcUrl,\n          withCredentials: this.withCredentials\n        }, function (error, req) {\n          // disposed\n          if (!_this5.request) {\n            return;\n          } // clear the loader's request reference\n\n\n          _this5.request = null;\n\n          if (error) {\n            _this5.error = {\n              status: req.status,\n              message: 'HLS playlist request error at URL: ' + _this5.srcUrl,\n              responseText: req.responseText,\n              // MEDIA_ERR_NETWORK\n              code: 2\n            };\n\n            if (_this5.state === 'HAVE_NOTHING') {\n              _this5.started = false;\n            }\n\n            return _this5.trigger('error');\n          }\n\n          var parser = new Parser(); // adding custom tag parsers\n\n          _this5.customTagParsers.forEach(function (customParser) {\n            return parser.addParser(customParser);\n          }); // adding custom tag mappers\n\n\n          _this5.customTagMappers.forEach(function (mapper) {\n            return parser.addTagMapper(mapper);\n          });\n\n          parser.push(req.responseText);\n          parser.end();\n          _this5.state = 'HAVE_MASTER';\n          parser.manifest.uri = _this5.srcUrl; // loaded a master playlist\n\n          if (parser.manifest.playlists) {\n            _this5.master = parser.manifest;\n            setupMediaPlaylists(_this5.master);\n            resolveMediaGroupUris(_this5.master);\n\n            _this5.trigger('loadedplaylist');\n\n            if (!_this5.request) {\n              // no media playlist was specifically selected so start\n              // from the first listed one\n              _this5.media(parser.manifest.playlists[0]);\n            }\n\n            return;\n          } // loaded a media playlist\n          // infer a master playlist if none was previously requested\n\n\n          _this5.master = {\n            mediaGroups: {\n              'AUDIO': {},\n              'VIDEO': {},\n              'CLOSED-CAPTIONS': {},\n              'SUBTITLES': {}\n            },\n            uri: window$1.location.href,\n            playlists: [{\n              uri: _this5.srcUrl,\n              id: 0\n            }]\n          };\n          _this5.master.playlists[_this5.srcUrl] = _this5.master.playlists[0];\n          _this5.master.playlists[0].resolvedUri = _this5.srcUrl; // m3u8-parser does not attach an attributes property to media playlists so make\n          // sure that the property is attached to avoid undefined reference errors\n\n          _this5.master.playlists[0].attributes = _this5.master.playlists[0].attributes || {};\n\n          _this5.haveMetadata(req, _this5.srcUrl);\n\n          return _this5.trigger('loadedmetadata');\n        });\n      }\n    }]);\n    return PlaylistLoader;\n  }(EventTarget$1);\n  /**\n   * @file playlist.js\n   *\n   * Playlist related utilities.\n   */\n\n\n  var createTimeRange = videojs$1.createTimeRange;\n  /**\n   * walk backward until we find a duration we can use\n   * or return a failure\n   *\n   * @param {Playlist} playlist the playlist to walk through\n   * @param {Number} endSequence the mediaSequence to stop walking on\n   */\n\n  var backwardDuration = function backwardDuration(playlist, endSequence) {\n    var result = 0;\n    var i = endSequence - playlist.mediaSequence; // if a start time is available for segment immediately following\n    // the interval, use it\n\n    var segment = playlist.segments[i]; // Walk backward until we find the latest segment with timeline\n    // information that is earlier than endSequence\n\n    if (segment) {\n      if (typeof segment.start !== 'undefined') {\n        return {\n          result: segment.start,\n          precise: true\n        };\n      }\n\n      if (typeof segment.end !== 'undefined') {\n        return {\n          result: segment.end - segment.duration,\n          precise: true\n        };\n      }\n    }\n\n    while (i--) {\n      segment = playlist.segments[i];\n\n      if (typeof segment.end !== 'undefined') {\n        return {\n          result: result + segment.end,\n          precise: true\n        };\n      }\n\n      result += segment.duration;\n\n      if (typeof segment.start !== 'undefined') {\n        return {\n          result: result + segment.start,\n          precise: true\n        };\n      }\n    }\n\n    return {\n      result: result,\n      precise: false\n    };\n  };\n  /**\n   * walk forward until we find a duration we can use\n   * or return a failure\n   *\n   * @param {Playlist} playlist the playlist to walk through\n   * @param {Number} endSequence the mediaSequence to stop walking on\n   */\n\n\n  var forwardDuration = function forwardDuration(playlist, endSequence) {\n    var result = 0;\n    var segment = void 0;\n    var i = endSequence - playlist.mediaSequence; // Walk forward until we find the earliest segment with timeline\n    // information\n\n    for (; i < playlist.segments.length; i++) {\n      segment = playlist.segments[i];\n\n      if (typeof segment.start !== 'undefined') {\n        return {\n          result: segment.start - result,\n          precise: true\n        };\n      }\n\n      result += segment.duration;\n\n      if (typeof segment.end !== 'undefined') {\n        return {\n          result: segment.end - result,\n          precise: true\n        };\n      }\n    } // indicate we didn't find a useful duration estimate\n\n\n    return {\n      result: -1,\n      precise: false\n    };\n  };\n  /**\n    * Calculate the media duration from the segments associated with a\n    * playlist. The duration of a subinterval of the available segments\n    * may be calculated by specifying an end index.\n    *\n    * @param {Object} playlist a media playlist object\n    * @param {Number=} endSequence an exclusive upper boundary\n    * for the playlist.  Defaults to playlist length.\n    * @param {Number} expired the amount of time that has dropped\n    * off the front of the playlist in a live scenario\n    * @return {Number} the duration between the first available segment\n    * and end index.\n    */\n\n\n  var intervalDuration = function intervalDuration(playlist, endSequence, expired) {\n    var backward = void 0;\n    var forward = void 0;\n\n    if (typeof endSequence === 'undefined') {\n      endSequence = playlist.mediaSequence + playlist.segments.length;\n    }\n\n    if (endSequence < playlist.mediaSequence) {\n      return 0;\n    } // do a backward walk to estimate the duration\n\n\n    backward = backwardDuration(playlist, endSequence);\n\n    if (backward.precise) {\n      // if we were able to base our duration estimate on timing\n      // information provided directly from the Media Source, return\n      // it\n      return backward.result;\n    } // walk forward to see if a precise duration estimate can be made\n    // that way\n\n\n    forward = forwardDuration(playlist, endSequence);\n\n    if (forward.precise) {\n      // we found a segment that has been buffered and so it's\n      // position is known precisely\n      return forward.result;\n    } // return the less-precise, playlist-based duration estimate\n\n\n    return backward.result + expired;\n  };\n  /**\n    * Calculates the duration of a playlist. If a start and end index\n    * are specified, the duration will be for the subset of the media\n    * timeline between those two indices. The total duration for live\n    * playlists is always Infinity.\n    *\n    * @param {Object} playlist a media playlist object\n    * @param {Number=} endSequence an exclusive upper\n    * boundary for the playlist. Defaults to the playlist media\n    * sequence number plus its length.\n    * @param {Number=} expired the amount of time that has\n    * dropped off the front of the playlist in a live scenario\n    * @return {Number} the duration between the start index and end\n    * index.\n    */\n\n\n  var duration = function duration(playlist, endSequence, expired) {\n    if (!playlist) {\n      return 0;\n    }\n\n    if (typeof expired !== 'number') {\n      expired = 0;\n    } // if a slice of the total duration is not requested, use\n    // playlist-level duration indicators when they're present\n\n\n    if (typeof endSequence === 'undefined') {\n      // if present, use the duration specified in the playlist\n      if (playlist.totalDuration) {\n        return playlist.totalDuration;\n      } // duration should be Infinity for live playlists\n\n\n      if (!playlist.endList) {\n        return window$1.Infinity;\n      }\n    } // calculate the total duration based on the segment durations\n\n\n    return intervalDuration(playlist, endSequence, expired);\n  };\n  /**\n    * Calculate the time between two indexes in the current playlist\n    * neight the start- nor the end-index need to be within the current\n    * playlist in which case, the targetDuration of the playlist is used\n    * to approximate the durations of the segments\n    *\n    * @param {Object} playlist a media playlist object\n    * @param {Number} startIndex\n    * @param {Number} endIndex\n    * @return {Number} the number of seconds between startIndex and endIndex\n    */\n\n\n  var sumDurations = function sumDurations(playlist, startIndex, endIndex) {\n    var durations = 0;\n\n    if (startIndex > endIndex) {\n      var _ref = [endIndex, startIndex];\n      startIndex = _ref[0];\n      endIndex = _ref[1];\n    }\n\n    if (startIndex < 0) {\n      for (var i = startIndex; i < Math.min(0, endIndex); i++) {\n        durations += playlist.targetDuration;\n      }\n\n      startIndex = 0;\n    }\n\n    for (var _i = startIndex; _i < endIndex; _i++) {\n      durations += playlist.segments[_i].duration;\n    }\n\n    return durations;\n  };\n  /**\n   * Determines the media index of the segment corresponding to the safe edge of the live\n   * window which is the duration of the last segment plus 2 target durations from the end\n   * of the playlist.\n   *\n   * @param {Object} playlist\n   *        a media playlist object\n   * @return {Number}\n   *         The media index of the segment at the safe live point. 0 if there is no \"safe\"\n   *         point.\n   * @function safeLiveIndex\n   */\n\n\n  var safeLiveIndex = function safeLiveIndex(playlist) {\n    if (!playlist.segments.length) {\n      return 0;\n    }\n\n    var i = playlist.segments.length - 1;\n    var distanceFromEnd = playlist.segments[i].duration || playlist.targetDuration;\n    var safeDistance = distanceFromEnd + playlist.targetDuration * 2;\n\n    while (i--) {\n      distanceFromEnd += playlist.segments[i].duration;\n\n      if (distanceFromEnd >= safeDistance) {\n        break;\n      }\n    }\n\n    return Math.max(0, i);\n  };\n  /**\n   * Calculates the playlist end time\n   *\n   * @param {Object} playlist a media playlist object\n   * @param {Number=} expired the amount of time that has\n   *                  dropped off the front of the playlist in a live scenario\n   * @param {Boolean|false} useSafeLiveEnd a boolean value indicating whether or not the\n   *                        playlist end calculation should consider the safe live end\n   *                        (truncate the playlist end by three segments). This is normally\n   *                        used for calculating the end of the playlist's seekable range.\n   * @returns {Number} the end time of playlist\n   * @function playlistEnd\n   */\n\n\n  var playlistEnd = function playlistEnd(playlist, expired, useSafeLiveEnd) {\n    if (!playlist || !playlist.segments) {\n      return null;\n    }\n\n    if (playlist.endList) {\n      return duration(playlist);\n    }\n\n    if (expired === null) {\n      return null;\n    }\n\n    expired = expired || 0;\n    var endSequence = useSafeLiveEnd ? safeLiveIndex(playlist) : playlist.segments.length;\n    return intervalDuration(playlist, playlist.mediaSequence + endSequence, expired);\n  };\n  /**\n    * Calculates the interval of time that is currently seekable in a\n    * playlist. The returned time ranges are relative to the earliest\n    * moment in the specified playlist that is still available. A full\n    * seekable implementation for live streams would need to offset\n    * these values by the duration of content that has expired from the\n    * stream.\n    *\n    * @param {Object} playlist a media playlist object\n    * dropped off the front of the playlist in a live scenario\n    * @param {Number=} expired the amount of time that has\n    * dropped off the front of the playlist in a live scenario\n    * @return {TimeRanges} the periods of time that are valid targets\n    * for seeking\n    */\n\n\n  var seekable = function seekable(playlist, expired) {\n    var useSafeLiveEnd = true;\n    var seekableStart = expired || 0;\n    var seekableEnd = playlistEnd(playlist, expired, useSafeLiveEnd);\n\n    if (seekableEnd === null) {\n      return createTimeRange();\n    }\n\n    return createTimeRange(seekableStart, seekableEnd);\n  };\n\n  var isWholeNumber = function isWholeNumber(num) {\n    return num - Math.floor(num) === 0;\n  };\n\n  var roundSignificantDigit = function roundSignificantDigit(increment, num) {\n    // If we have a whole number, just add 1 to it\n    if (isWholeNumber(num)) {\n      return num + increment * 0.1;\n    }\n\n    var numDecimalDigits = num.toString().split('.')[1].length;\n\n    for (var i = 1; i <= numDecimalDigits; i++) {\n      var scale = Math.pow(10, i);\n      var temp = num * scale;\n\n      if (isWholeNumber(temp) || i === numDecimalDigits) {\n        return (temp + increment) / scale;\n      }\n    }\n  };\n\n  var ceilLeastSignificantDigit = roundSignificantDigit.bind(null, 1);\n  var floorLeastSignificantDigit = roundSignificantDigit.bind(null, -1);\n  /**\n   * Determine the index and estimated starting time of the segment that\n   * contains a specified playback position in a media playlist.\n   *\n   * @param {Object} playlist the media playlist to query\n   * @param {Number} currentTime The number of seconds since the earliest\n   * possible position to determine the containing segment for\n   * @param {Number} startIndex\n   * @param {Number} startTime\n   * @return {Object}\n   */\n\n  var getMediaInfoForTime = function getMediaInfoForTime(playlist, currentTime, startIndex, startTime) {\n    var i = void 0;\n    var segment = void 0;\n    var numSegments = playlist.segments.length;\n    var time = currentTime - startTime;\n\n    if (time < 0) {\n      // Walk backward from startIndex in the playlist, adding durations\n      // until we find a segment that contains `time` and return it\n      if (startIndex > 0) {\n        for (i = startIndex - 1; i >= 0; i--) {\n          segment = playlist.segments[i];\n          time += floorLeastSignificantDigit(segment.duration);\n\n          if (time > 0) {\n            return {\n              mediaIndex: i,\n              startTime: startTime - sumDurations(playlist, startIndex, i)\n            };\n          }\n        }\n      } // We were unable to find a good segment within the playlist\n      // so select the first segment\n\n\n      return {\n        mediaIndex: 0,\n        startTime: currentTime\n      };\n    } // When startIndex is negative, we first walk forward to first segment\n    // adding target durations. If we \"run out of time\" before getting to\n    // the first segment, return the first segment\n\n\n    if (startIndex < 0) {\n      for (i = startIndex; i < 0; i++) {\n        time -= playlist.targetDuration;\n\n        if (time < 0) {\n          return {\n            mediaIndex: 0,\n            startTime: currentTime\n          };\n        }\n      }\n\n      startIndex = 0;\n    } // Walk forward from startIndex in the playlist, subtracting durations\n    // until we find a segment that contains `time` and return it\n\n\n    for (i = startIndex; i < numSegments; i++) {\n      segment = playlist.segments[i];\n      time -= ceilLeastSignificantDigit(segment.duration);\n\n      if (time < 0) {\n        return {\n          mediaIndex: i,\n          startTime: startTime + sumDurations(playlist, startIndex, i)\n        };\n      }\n    } // We are out of possible candidates so load the last one...\n\n\n    return {\n      mediaIndex: numSegments - 1,\n      startTime: currentTime\n    };\n  };\n  /**\n   * Check whether the playlist is blacklisted or not.\n   *\n   * @param {Object} playlist the media playlist object\n   * @return {boolean} whether the playlist is blacklisted or not\n   * @function isBlacklisted\n   */\n\n\n  var isBlacklisted = function isBlacklisted(playlist) {\n    return playlist.excludeUntil && playlist.excludeUntil > Date.now();\n  };\n  /**\n   * Check whether the playlist is compatible with current playback configuration or has\n   * been blacklisted permanently for being incompatible.\n   *\n   * @param {Object} playlist the media playlist object\n   * @return {boolean} whether the playlist is incompatible or not\n   * @function isIncompatible\n   */\n\n\n  var isIncompatible = function isIncompatible(playlist) {\n    return playlist.excludeUntil && playlist.excludeUntil === Infinity;\n  };\n  /**\n   * Check whether the playlist is enabled or not.\n   *\n   * @param {Object} playlist the media playlist object\n   * @return {boolean} whether the playlist is enabled or not\n   * @function isEnabled\n   */\n\n\n  var isEnabled = function isEnabled(playlist) {\n    var blacklisted = isBlacklisted(playlist);\n    return !playlist.disabled && !blacklisted;\n  };\n  /**\n   * Check whether the playlist has been manually disabled through the representations api.\n   *\n   * @param {Object} playlist the media playlist object\n   * @return {boolean} whether the playlist is disabled manually or not\n   * @function isDisabled\n   */\n\n\n  var isDisabled = function isDisabled(playlist) {\n    return playlist.disabled;\n  };\n  /**\n   * Returns whether the current playlist is an AES encrypted HLS stream\n   *\n   * @return {Boolean} true if it's an AES encrypted HLS stream\n   */\n\n\n  var isAes = function isAes(media) {\n    for (var i = 0; i < media.segments.length; i++) {\n      if (media.segments[i].key) {\n        return true;\n      }\n    }\n\n    return false;\n  };\n  /**\n   * Returns whether the current playlist contains fMP4\n   *\n   * @return {Boolean} true if the playlist contains fMP4\n   */\n\n\n  var isFmp4 = function isFmp4(media) {\n    for (var i = 0; i < media.segments.length; i++) {\n      if (media.segments[i].map) {\n        return true;\n      }\n    }\n\n    return false;\n  };\n  /**\n   * Checks if the playlist has a value for the specified attribute\n   *\n   * @param {String} attr\n   *        Attribute to check for\n   * @param {Object} playlist\n   *        The media playlist object\n   * @return {Boolean}\n   *         Whether the playlist contains a value for the attribute or not\n   * @function hasAttribute\n   */\n\n\n  var hasAttribute = function hasAttribute(attr, playlist) {\n    return playlist.attributes && playlist.attributes[attr];\n  };\n  /**\n   * Estimates the time required to complete a segment download from the specified playlist\n   *\n   * @param {Number} segmentDuration\n   *        Duration of requested segment\n   * @param {Number} bandwidth\n   *        Current measured bandwidth of the player\n   * @param {Object} playlist\n   *        The media playlist object\n   * @param {Number=} bytesReceived\n   *        Number of bytes already received for the request. Defaults to 0\n   * @return {Number|NaN}\n   *         The estimated time to request the segment. NaN if bandwidth information for\n   *         the given playlist is unavailable\n   * @function estimateSegmentRequestTime\n   */\n\n\n  var estimateSegmentRequestTime = function estimateSegmentRequestTime(segmentDuration, bandwidth, playlist) {\n    var bytesReceived = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : 0;\n\n    if (!hasAttribute('BANDWIDTH', playlist)) {\n      return NaN;\n    }\n\n    var size = segmentDuration * playlist.attributes.BANDWIDTH;\n    return (size - bytesReceived * 8) / bandwidth;\n  };\n  /*\n   * Returns whether the current playlist is the lowest rendition\n   *\n   * @return {Boolean} true if on lowest rendition\n   */\n\n\n  var isLowestEnabledRendition = function isLowestEnabledRendition(master, media) {\n    if (master.playlists.length === 1) {\n      return true;\n    }\n\n    var currentBandwidth = media.attributes.BANDWIDTH || Number.MAX_VALUE;\n    return master.playlists.filter(function (playlist) {\n      if (!isEnabled(playlist)) {\n        return false;\n      }\n\n      return (playlist.attributes.BANDWIDTH || 0) < currentBandwidth;\n    }).length === 0;\n  }; // exports\n\n\n  var Playlist = {\n    duration: duration,\n    seekable: seekable,\n    safeLiveIndex: safeLiveIndex,\n    getMediaInfoForTime: getMediaInfoForTime,\n    isEnabled: isEnabled,\n    isDisabled: isDisabled,\n    isBlacklisted: isBlacklisted,\n    isIncompatible: isIncompatible,\n    playlistEnd: playlistEnd,\n    isAes: isAes,\n    isFmp4: isFmp4,\n    hasAttribute: hasAttribute,\n    estimateSegmentRequestTime: estimateSegmentRequestTime,\n    isLowestEnabledRendition: isLowestEnabledRendition\n  };\n  /**\n   * @file xhr.js\n   */\n\n  var videojsXHR = videojs$1.xhr,\n      mergeOptions$1$1 = videojs$1.mergeOptions;\n\n  var xhrFactory = function xhrFactory() {\n    var xhr = function XhrFunction(options, callback) {\n      // Add a default timeout for all hls requests\n      options = mergeOptions$1$1({\n        timeout: 45e3\n      }, options); // Allow an optional user-specified function to modify the option\n      // object before we construct the xhr request\n\n      var beforeRequest = XhrFunction.beforeRequest || videojs$1.Hls.xhr.beforeRequest;\n\n      if (beforeRequest && typeof beforeRequest === 'function') {\n        var newOptions = beforeRequest(options);\n\n        if (newOptions) {\n          options = newOptions;\n        }\n      }\n\n      var request = videojsXHR(options, function (error, response) {\n        var reqResponse = request.response;\n\n        if (!error && reqResponse) {\n          request.responseTime = Date.now();\n          request.roundTripTime = request.responseTime - request.requestTime;\n          request.bytesReceived = reqResponse.byteLength || reqResponse.length;\n\n          if (!request.bandwidth) {\n            request.bandwidth = Math.floor(request.bytesReceived / request.roundTripTime * 8 * 1000);\n          }\n        }\n\n        if (response.headers) {\n          request.responseHeaders = response.headers;\n        } // videojs.xhr now uses a specific code on the error\n        // object to signal that a request has timed out instead\n        // of setting a boolean on the request object\n\n\n        if (error && error.code === 'ETIMEDOUT') {\n          request.timedout = true;\n        } // videojs.xhr no longer considers status codes outside of 200 and 0\n        // (for file uris) to be errors, but the old XHR did, so emulate that\n        // behavior. Status 206 may be used in response to byterange requests.\n\n\n        if (!error && !request.aborted && response.statusCode !== 200 && response.statusCode !== 206 && response.statusCode !== 0) {\n          error = new Error('XHR Failed with a response of: ' + (request && (reqResponse || request.responseText)));\n        }\n\n        callback(error, request);\n      });\n      var originalAbort = request.abort;\n\n      request.abort = function () {\n        request.aborted = true;\n        return originalAbort.apply(request, arguments);\n      };\n\n      request.uri = options.uri;\n      request.requestTime = Date.now();\n      return request;\n    };\n\n    return xhr;\n  };\n  /**\n   * @file bin-utils.js\n   */\n\n  /**\n   * convert a TimeRange to text\n   *\n   * @param {TimeRange} range the timerange to use for conversion\n   * @param {Number} i the iterator on the range to convert\n   */\n\n\n  var textRange = function textRange(range, i) {\n    return range.start(i) + '-' + range.end(i);\n  };\n  /**\n   * format a number as hex string\n   *\n   * @param {Number} e The number\n   * @param {Number} i the iterator\n   */\n\n\n  var formatHexString = function formatHexString(e, i) {\n    var value = e.toString(16);\n    return '00'.substring(0, 2 - value.length) + value + (i % 2 ? ' ' : '');\n  };\n\n  var formatAsciiString = function formatAsciiString(e) {\n    if (e >= 0x20 && e < 0x7e) {\n      return String.fromCharCode(e);\n    }\n\n    return '.';\n  };\n  /**\n   * Creates an object for sending to a web worker modifying properties that are TypedArrays\n   * into a new object with seperated properties for the buffer, byteOffset, and byteLength.\n   *\n   * @param {Object} message\n   *        Object of properties and values to send to the web worker\n   * @return {Object}\n   *         Modified message with TypedArray values expanded\n   * @function createTransferableMessage\n   */\n\n\n  var createTransferableMessage = function createTransferableMessage(message) {\n    var transferable = {};\n    Object.keys(message).forEach(function (key) {\n      var value = message[key];\n\n      if (ArrayBuffer.isView(value)) {\n        transferable[key] = {\n          bytes: value.buffer,\n          byteOffset: value.byteOffset,\n          byteLength: value.byteLength\n        };\n      } else {\n        transferable[key] = value;\n      }\n    });\n    return transferable;\n  };\n  /**\n   * Returns a unique string identifier for a media initialization\n   * segment.\n   */\n\n\n  var initSegmentId = function initSegmentId(initSegment) {\n    var byterange = initSegment.byterange || {\n      length: Infinity,\n      offset: 0\n    };\n    return [byterange.length, byterange.offset, initSegment.resolvedUri].join(',');\n  };\n  /**\n   * utils to help dump binary data to the console\n   */\n\n\n  var hexDump = function hexDump(data) {\n    var bytes = Array.prototype.slice.call(data);\n    var step = 16;\n    var result = '';\n    var hex = void 0;\n    var ascii = void 0;\n\n    for (var j = 0; j < bytes.length / step; j++) {\n      hex = bytes.slice(j * step, j * step + step).map(formatHexString).join('');\n      ascii = bytes.slice(j * step, j * step + step).map(formatAsciiString).join('');\n      result += hex + ' ' + ascii + '\\n';\n    }\n\n    return result;\n  };\n\n  var tagDump = function tagDump(_ref) {\n    var bytes = _ref.bytes;\n    return hexDump(bytes);\n  };\n\n  var textRanges = function textRanges(ranges) {\n    var result = '';\n    var i = void 0;\n\n    for (i = 0; i < ranges.length; i++) {\n      result += textRange(ranges, i) + ' ';\n    }\n\n    return result;\n  };\n\n  var utils$1 =\n  /*#__PURE__*/\n  Object.freeze({\n    createTransferableMessage: createTransferableMessage,\n    initSegmentId: initSegmentId,\n    hexDump: hexDump,\n    tagDump: tagDump,\n    textRanges: textRanges\n  });\n  /**\n   * @file time.js\n   */\n\n  /**\n   * Checks whether a given time is within a segment based on its start time\n   * and duration. For playerTime, the requested time is in seconds, for\n   * streamTime, the time is a Date object.\n   *\n   * @param {Date|Number} requestedTime Time to check is within a segment\n   * @param {\"stream\" | \"player\"} type Whether passing in a playerTime or streamTime\n   * @param {Date|Number} segmentStart The start time of the segment\n   * @param {Number} duration Segment duration in seconds\n   */\n\n  var timeWithinSegment = function timeWithinSegment(requestedTime, type, segmentStart, duration) {\n    var endTime = void 0;\n\n    if (type === 'stream') {\n      endTime = new Date(duration * 1000 + segmentStart.getTime());\n      var requestedTimeString = requestedTime.toISOString();\n      var segmentTimeString = segmentStart.toISOString();\n      var endTimeString = endTime.toISOString();\n      return segmentTimeString <= requestedTimeString && requestedTimeString <= endTimeString;\n    } else if (type === 'player') {\n      endTime = duration + segmentStart;\n      return segmentStart <= requestedTime && requestedTime <= endTime;\n    }\n  };\n  /**\n   * Finds a segment that contains the time requested. This might be an estimate or\n   * an accurate match.\n   *\n   * @param {Date|Number} time The streamTime or playerTime to find a matching segment for\n   * @param {\"stream\" | \"player\"} type Either the playerTime or streamTime\n   * @param {Object} playlist A playlist object\n   * @return {Object} match\n   * @return {Object} match.segment The matched segment from the playlist\n   * @return {Date|Number} match.estimatedStart The estimated start time of the segment\n   * @return {\"accurate\" | \"estimate\"} match.type Whether the match is estimated or accurate\n   */\n\n\n  var findSegmentForTime = function findSegmentForTime(time, type, playlist) {\n    if (!playlist.segments || playlist.segments.length === 0) {\n      return null;\n    }\n\n    if (type !== 'player' && type !== 'stream') {\n      return null;\n    }\n\n    var manifestTime = 0;\n\n    for (var i = 0; i < playlist.segments.length; i++) {\n      var segment = playlist.segments[i];\n      var estimatedEnd = manifestTime + segment.duration;\n      var segmentStart = void 0;\n      var estimatedStart = void 0;\n\n      if (type === 'player') {\n        segmentStart = segment.start;\n        estimatedStart = manifestTime;\n      } else {\n        // we can rely on the program date time being accurate\n        segmentStart = segment.dateTimeObject;\n        estimatedStart = segment.dateTimeObject;\n      }\n\n      var timeWithinSegmentEnd = typeof segment.start !== 'undefined' && typeof segment.end !== 'undefined' && timeWithinSegment(time, type, segmentStart, segment.end - segment.start);\n      var timeWithinSegmentDuration = timeWithinSegment(time, type, estimatedStart, segment.duration);\n\n      if (timeWithinSegmentEnd) {\n        return {\n          segment: segment,\n          estimatedStart: estimatedStart,\n          type: 'accurate'\n        };\n      } else if (timeWithinSegmentDuration) {\n        return {\n          segment: segment,\n          estimatedStart: estimatedStart,\n          type: 'estimate'\n        };\n      }\n\n      manifestTime = estimatedEnd;\n    }\n\n    return null;\n  };\n  /**\n   * Finds a segment that contains the given player time(in seconds).\n   *\n   * @param {Number} time The player time to find a match for\n   * @param {Object} playlist A playlist object to search within\n   */\n\n\n  var findSegmentForPlayerTime = function findSegmentForPlayerTime(time, playlist) {\n    // Assumptions:\n    // - there will always be a segment.duration\n    // - we can start from zero\n    // - segments are in time order\n    // - segment.start and segment.end only come\n    //    from syncController\n    return findSegmentForTime(time, 'player', playlist);\n  };\n  /**\n   * Finds a segment that contains the stream time give as an ISO-8601 string.\n   *\n   * @param {String} streamTime The ISO-8601 streamTime to find a match for\n   * @param {Object} playlist A playlist object to search within\n   */\n\n\n  var findSegmentForStreamTime = function findSegmentForStreamTime(streamTime, playlist) {\n    var dateTimeObject = void 0;\n\n    try {\n      dateTimeObject = new Date(streamTime);\n    } catch (e) {\n      // TODO something here?\n      return null;\n    } // Assumptions:\n    //  - verifyProgramDateTimeTags has already been run\n    //  - live streams have been started\n\n\n    return findSegmentForTime(dateTimeObject, 'stream', playlist);\n  };\n  /**\n   * Gives the offset of the comparisonTimestamp from the streamTime timestamp in seconds.\n   * If the offset returned is positive, the streamTime occurs before the comparisonTimestamp.\n   * If the offset is negative, the streamTime occurs before the comparisonTimestamp.\n   *\n   * @param {String} comparisonTimeStamp An ISO-8601 timestamp to compare against\n   * @param {String} streamTime The streamTime as an ISO-8601 string\n   * @return {Number} offset\n   */\n\n\n  var getOffsetFromTimestamp = function getOffsetFromTimestamp(comparisonTimeStamp, streamTime) {\n    var segmentDateTime = void 0;\n    var streamDateTime = void 0;\n\n    try {\n      segmentDateTime = new Date(comparisonTimeStamp);\n      streamDateTime = new Date(streamTime);\n    } catch (e) {// TODO handle error\n    }\n\n    var segmentTimeEpoch = segmentDateTime.getTime();\n    var streamTimeEpoch = streamDateTime.getTime();\n    return (streamTimeEpoch - segmentTimeEpoch) / 1000;\n  };\n  /**\n   * Checks that all segments in this playlist have programDateTime tags.\n   *\n   * @param {Object} playlist A playlist object\n   */\n\n\n  var verifyProgramDateTimeTags = function verifyProgramDateTimeTags(playlist) {\n    if (!playlist.segments || playlist.segments.length === 0) {\n      return false;\n    }\n\n    for (var i = 0; i < playlist.segments.length; i++) {\n      var segment = playlist.segments[i];\n\n      if (!segment.dateTimeObject) {\n        return false;\n      }\n    }\n\n    return true;\n  };\n  /**\n   * Returns the streamTime  of the media given a playlist and a playerTime.\n   * The playlist must have programDateTime tags for a programDateTime tag to be returned.\n   * If the segments containing the time requested have not been buffered yet, an estimate\n   * may be returned to the callback.\n   *\n   * @param {Object} args\n   * @param {Object} args.playlist A playlist object to search within\n   * @param {Number} time A playerTime in seconds\n   * @param {Function} callback(err, streamTime)\n   * @returns {String} err.message A detailed error message\n   * @returns {Object} streamTime\n   * @returns {Number} streamTime.mediaSeconds The streamTime in seconds\n   * @returns {String} streamTime.programDateTime The streamTime as an ISO-8601 String\n   */\n\n\n  var getStreamTime = function getStreamTime(_ref) {\n    var playlist = _ref.playlist,\n        _ref$time = _ref.time,\n        time = _ref$time === undefined ? undefined : _ref$time,\n        callback = _ref.callback;\n\n    if (!callback) {\n      throw new Error('getStreamTime: callback must be provided');\n    }\n\n    if (!playlist || time === undefined) {\n      return callback({\n        message: 'getStreamTime: playlist and time must be provided'\n      });\n    }\n\n    var matchedSegment = findSegmentForPlayerTime(time, playlist);\n\n    if (!matchedSegment) {\n      return callback({\n        message: 'valid streamTime was not found'\n      });\n    }\n\n    if (matchedSegment.type === 'estimate') {\n      return callback({\n        message: 'Accurate streamTime could not be determined. Please seek to e.seekTime and try again',\n        seekTime: matchedSegment.estimatedStart\n      });\n    }\n\n    var streamTime = {\n      mediaSeconds: time\n    };\n\n    if (matchedSegment.segment.dateTimeObject) {\n      // TODO this is currently the time of the beginning of the\n      // segment. This still needs to be modified to be offset\n      // by the time requested.\n      streamTime.programDateTime = matchedSegment.segment.dateTimeObject.toISOString();\n    }\n\n    return callback(null, streamTime);\n  };\n  /**\n   * Seeks in the player to a time that matches the given streamTime ISO-8601 string.\n   *\n   * @param {Object} args\n   * @param {String} args.streamTime A streamTime to seek to as an ISO-8601 String\n   * @param {Object} args.playlist A playlist to look within\n   * @param {Number} args.retryCount The number of times to try for an accurate seek. Default is 2.\n   * @param {Function} args.seekTo A method to perform a seek\n   * @param {Boolean} args.pauseAfterSeek Whether to end in a paused state after seeking. Default is true.\n   * @param {Object} args.tech The tech to seek on\n   * @param {Function} args.callback(err, newTime) A callback to return the new time to\n   * @returns {String} err.message A detailed error message\n   * @returns {Number} newTime The exact time that was seeked to in seconds\n   */\n\n\n  var seekToStreamTime = function seekToStreamTime(_ref2) {\n    var streamTime = _ref2.streamTime,\n        playlist = _ref2.playlist,\n        _ref2$retryCount = _ref2.retryCount,\n        retryCount = _ref2$retryCount === undefined ? 2 : _ref2$retryCount,\n        seekTo = _ref2.seekTo,\n        _ref2$pauseAfterSeek = _ref2.pauseAfterSeek,\n        pauseAfterSeek = _ref2$pauseAfterSeek === undefined ? true : _ref2$pauseAfterSeek,\n        tech = _ref2.tech,\n        callback = _ref2.callback;\n\n    if (!callback) {\n      throw new Error('seekToStreamTime: callback must be provided');\n    }\n\n    if (typeof streamTime === 'undefined' || !playlist || !seekTo) {\n      return callback({\n        message: 'seekToStreamTime: streamTime, seekTo and playlist must be provided'\n      });\n    }\n\n    if (!playlist.endList && !tech.hasStarted_) {\n      return callback({\n        message: 'player must be playing a live stream to start buffering'\n      });\n    }\n\n    if (!verifyProgramDateTimeTags(playlist)) {\n      return callback({\n        message: 'programDateTime tags must be provided in the manifest ' + playlist.resolvedUri\n      });\n    }\n\n    var matchedSegment = findSegmentForStreamTime(streamTime, playlist); // no match\n\n    if (!matchedSegment) {\n      return callback({\n        message: streamTime + ' was not found in the stream'\n      });\n    }\n\n    if (matchedSegment.type === 'estimate') {\n      // we've run out of retries\n      if (retryCount === 0) {\n        return callback({\n          message: streamTime + ' is not buffered yet. Try again'\n        });\n      }\n\n      return seekToStreamTime({\n        streamTime: streamTime,\n        playlist: playlist,\n        retryCount: retryCount - 1,\n        seekTo: seekTo,\n        pauseAfterSeek: pauseAfterSeek,\n        tech: tech,\n        callback: callback\n      });\n    }\n\n    var segment = matchedSegment.segment;\n    var mediaOffset = getOffsetFromTimestamp(segment.dateTimeObject, streamTime);\n    var seekToTime = segment.start + mediaOffset;\n\n    var seekedCallback = function seekedCallback() {\n      return callback(null, tech.currentTime());\n    }; // listen for seeked event\n\n\n    tech.one('seeked', seekedCallback); // pause before seeking as video.js will restore this state\n\n    if (pauseAfterSeek) {\n      tech.pause();\n    }\n\n    seekTo(seekToTime);\n  };\n  /**\n   * ranges\n   *\n   * Utilities for working with TimeRanges.\n   *\n   */\n  // Fudge factor to account for TimeRanges rounding\n\n\n  var TIME_FUDGE_FACTOR = 1 / 30; // Comparisons between time values such as current time and the end of the buffered range\n  // can be misleading because of precision differences or when the current media has poorly\n  // aligned audio and video, which can cause values to be slightly off from what you would\n  // expect. This value is what we consider to be safe to use in such comparisons to account\n  // for these scenarios.\n\n  var SAFE_TIME_DELTA = TIME_FUDGE_FACTOR * 3;\n\n  var filterRanges = function filterRanges(timeRanges, predicate) {\n    var results = [];\n    var i = void 0;\n\n    if (timeRanges && timeRanges.length) {\n      // Search for ranges that match the predicate\n      for (i = 0; i < timeRanges.length; i++) {\n        if (predicate(timeRanges.start(i), timeRanges.end(i))) {\n          results.push([timeRanges.start(i), timeRanges.end(i)]);\n        }\n      }\n    }\n\n    return videojs$1.createTimeRanges(results);\n  };\n  /**\n   * Attempts to find the buffered TimeRange that contains the specified\n   * time.\n   * @param {TimeRanges} buffered - the TimeRanges object to query\n   * @param {number} time  - the time to filter on.\n   * @returns {TimeRanges} a new TimeRanges object\n   */\n\n\n  var findRange = function findRange(buffered, time) {\n    return filterRanges(buffered, function (start, end) {\n      return start - TIME_FUDGE_FACTOR <= time && end + TIME_FUDGE_FACTOR >= time;\n    });\n  };\n  /**\n   * Returns the TimeRanges that begin later than the specified time.\n   * @param {TimeRanges} timeRanges - the TimeRanges object to query\n   * @param {number} time - the time to filter on.\n   * @returns {TimeRanges} a new TimeRanges object.\n   */\n\n\n  var findNextRange = function findNextRange(timeRanges, time) {\n    return filterRanges(timeRanges, function (start) {\n      return start - TIME_FUDGE_FACTOR >= time;\n    });\n  };\n  /**\n   * Returns gaps within a list of TimeRanges\n   * @param {TimeRanges} buffered - the TimeRanges object\n   * @return {TimeRanges} a TimeRanges object of gaps\n   */\n\n\n  var findGaps = function findGaps(buffered) {\n    if (buffered.length < 2) {\n      return videojs$1.createTimeRanges();\n    }\n\n    var ranges = [];\n\n    for (var i = 1; i < buffered.length; i++) {\n      var start = buffered.end(i - 1);\n      var end = buffered.start(i);\n      ranges.push([start, end]);\n    }\n\n    return videojs$1.createTimeRanges(ranges);\n  };\n  /**\n   * Gets a human readable string for a TimeRange\n   *\n   * @param {TimeRange} range\n   * @returns {String} a human readable string\n   */\n\n\n  var printableRange = function printableRange(range) {\n    var strArr = [];\n\n    if (!range || !range.length) {\n      return '';\n    }\n\n    for (var i = 0; i < range.length; i++) {\n      strArr.push(range.start(i) + ' => ' + range.end(i));\n    }\n\n    return strArr.join(', ');\n  };\n  /**\n   * Calculates the amount of time left in seconds until the player hits the end of the\n   * buffer and causes a rebuffer\n   *\n   * @param {TimeRange} buffered\n   *        The state of the buffer\n   * @param {Numnber} currentTime\n   *        The current time of the player\n   * @param {Number} playbackRate\n   *        The current playback rate of the player. Defaults to 1.\n   * @return {Number}\n   *         Time until the player has to start rebuffering in seconds.\n   * @function timeUntilRebuffer\n   */\n\n\n  var timeUntilRebuffer = function timeUntilRebuffer(buffered, currentTime) {\n    var playbackRate = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 1;\n    var bufferedEnd = buffered.length ? buffered.end(buffered.length - 1) : 0;\n    return (bufferedEnd - currentTime) / playbackRate;\n  };\n  /**\n   * Converts a TimeRanges object into an array representation\n   * @param {TimeRanges} timeRanges\n   * @returns {Array}\n   */\n\n\n  var timeRangesToArray = function timeRangesToArray(timeRanges) {\n    var timeRangesList = [];\n\n    for (var i = 0; i < timeRanges.length; i++) {\n      timeRangesList.push({\n        start: timeRanges.start(i),\n        end: timeRanges.end(i)\n      });\n    }\n\n    return timeRangesList;\n  };\n  /**\n   * @file create-text-tracks-if-necessary.js\n   */\n\n  /**\n   * Create text tracks on video.js if they exist on a segment.\n   *\n   * @param {Object} sourceBuffer the VSB or FSB\n   * @param {Object} mediaSource the HTML media source\n   * @param {Object} segment the segment that may contain the text track\n   * @private\n   */\n\n\n  var createTextTracksIfNecessary = function createTextTracksIfNecessary(sourceBuffer, mediaSource, segment) {\n    var player = mediaSource.player_; // create an in-band caption track if one is present in the segment\n\n    if (segment.captions && segment.captions.length) {\n      if (!sourceBuffer.inbandTextTracks_) {\n        sourceBuffer.inbandTextTracks_ = {};\n      }\n\n      for (var trackId in segment.captionStreams) {\n        if (!sourceBuffer.inbandTextTracks_[trackId]) {\n          player.tech_.trigger({\n            type: 'usage',\n            name: 'hls-608'\n          });\n          var track = player.textTracks().getTrackById(trackId);\n\n          if (track) {\n            // Resuse an existing track with a CC# id because this was\n            // very likely created by videojs-contrib-hls from information\n            // in the m3u8 for us to use\n            sourceBuffer.inbandTextTracks_[trackId] = track;\n          } else {\n            // Otherwise, create a track with the default `CC#` label and\n            // without a language\n            sourceBuffer.inbandTextTracks_[trackId] = player.addRemoteTextTrack({\n              kind: 'captions',\n              id: trackId,\n              label: trackId\n            }, false).track;\n          }\n        }\n      }\n    }\n\n    if (segment.metadata && segment.metadata.length && !sourceBuffer.metadataTrack_) {\n      sourceBuffer.metadataTrack_ = player.addRemoteTextTrack({\n        kind: 'metadata',\n        label: 'Timed Metadata'\n      }, false).track;\n      sourceBuffer.metadataTrack_.inBandMetadataTrackDispatchType = segment.metadata.dispatchType;\n    }\n  };\n  /**\n   * @file remove-cues-from-track.js\n   */\n\n  /**\n   * Remove cues from a track on video.js.\n   *\n   * @param {Double} start start of where we should remove the cue\n   * @param {Double} end end of where the we should remove the cue\n   * @param {Object} track the text track to remove the cues from\n   * @private\n   */\n\n\n  var removeCuesFromTrack = function removeCuesFromTrack(start, end, track) {\n    var i = void 0;\n    var cue = void 0;\n\n    if (!track) {\n      return;\n    }\n\n    if (!track.cues) {\n      return;\n    }\n\n    i = track.cues.length;\n\n    while (i--) {\n      cue = track.cues[i]; // Remove any overlapping cue\n\n      if (cue.startTime <= end && cue.endTime >= start) {\n        track.removeCue(cue);\n      }\n    }\n  };\n  /**\n   * @file add-text-track-data.js\n   */\n\n  /**\n   * Define properties on a cue for backwards compatability,\n   * but warn the user that the way that they are using it\n   * is depricated and will be removed at a later date.\n   *\n   * @param {Cue} cue the cue to add the properties on\n   * @private\n   */\n\n\n  var deprecateOldCue = function deprecateOldCue(cue) {\n    Object.defineProperties(cue.frame, {\n      id: {\n        get: function get() {\n          videojs$1.log.warn('cue.frame.id is deprecated. Use cue.value.key instead.');\n          return cue.value.key;\n        }\n      },\n      value: {\n        get: function get() {\n          videojs$1.log.warn('cue.frame.value is deprecated. Use cue.value.data instead.');\n          return cue.value.data;\n        }\n      },\n      privateData: {\n        get: function get() {\n          videojs$1.log.warn('cue.frame.privateData is deprecated. Use cue.value.data instead.');\n          return cue.value.data;\n        }\n      }\n    });\n  };\n\n  var durationOfVideo = function durationOfVideo(duration) {\n    var dur = void 0;\n\n    if (isNaN(duration) || Math.abs(duration) === Infinity) {\n      dur = Number.MAX_VALUE;\n    } else {\n      dur = duration;\n    }\n\n    return dur;\n  };\n  /**\n   * Add text track data to a source handler given the captions and\n   * metadata from the buffer.\n   *\n   * @param {Object} sourceHandler the virtual source buffer\n   * @param {Array} captionArray an array of caption data\n   * @param {Array} metadataArray an array of meta data\n   * @private\n   */\n\n\n  var addTextTrackData = function addTextTrackData(sourceHandler, captionArray, metadataArray) {\n    var Cue = window$1.WebKitDataCue || window$1.VTTCue;\n\n    if (captionArray) {\n      captionArray.forEach(function (caption) {\n        var track = caption.stream;\n        this.inbandTextTracks_[track].addCue(new Cue(caption.startTime + this.timestampOffset, caption.endTime + this.timestampOffset, caption.text));\n      }, sourceHandler);\n    }\n\n    if (metadataArray) {\n      var videoDuration = durationOfVideo(sourceHandler.mediaSource_.duration);\n      metadataArray.forEach(function (metadata) {\n        var time = metadata.cueTime + this.timestampOffset;\n        metadata.frames.forEach(function (frame) {\n          var cue = new Cue(time, time, frame.value || frame.url || frame.data || '');\n          cue.frame = frame;\n          cue.value = frame;\n          deprecateOldCue(cue);\n          this.metadataTrack_.addCue(cue);\n        }, this);\n      }, sourceHandler); // Updating the metadeta cues so that\n      // the endTime of each cue is the startTime of the next cue\n      // the endTime of last cue is the duration of the video\n\n      if (sourceHandler.metadataTrack_ && sourceHandler.metadataTrack_.cues && sourceHandler.metadataTrack_.cues.length) {\n        var cues = sourceHandler.metadataTrack_.cues;\n        var cuesArray = []; // Create a copy of the TextTrackCueList...\n        // ...disregarding cues with a falsey value\n\n        for (var i = 0; i < cues.length; i++) {\n          if (cues[i]) {\n            cuesArray.push(cues[i]);\n          }\n        } // Group cues by their startTime value\n\n\n        var cuesGroupedByStartTime = cuesArray.reduce(function (obj, cue) {\n          var timeSlot = obj[cue.startTime] || [];\n          timeSlot.push(cue);\n          obj[cue.startTime] = timeSlot;\n          return obj;\n        }, {}); // Sort startTimes by ascending order\n\n        var sortedStartTimes = Object.keys(cuesGroupedByStartTime).sort(function (a, b) {\n          return Number(a) - Number(b);\n        }); // Map each cue group's endTime to the next group's startTime\n\n        sortedStartTimes.forEach(function (startTime, idx) {\n          var cueGroup = cuesGroupedByStartTime[startTime];\n          var nextTime = Number(sortedStartTimes[idx + 1]) || videoDuration; // Map each cue's endTime the next group's startTime\n\n          cueGroup.forEach(function (cue) {\n            cue.endTime = nextTime;\n          });\n        });\n      }\n    }\n  };\n\n  var win = typeof window !== 'undefined' ? window : {},\n      TARGET = typeof Symbol === 'undefined' ? '__target' : Symbol(),\n      SCRIPT_TYPE = 'application/javascript',\n      BlobBuilder = win.BlobBuilder || win.WebKitBlobBuilder || win.MozBlobBuilder || win.MSBlobBuilder,\n      URL = win.URL || win.webkitURL || URL && URL.msURL,\n      Worker = win.Worker;\n  /**\n   * Returns a wrapper around Web Worker code that is constructible.\n   *\n   * @function shimWorker\n   *\n   * @param { String }    filename    The name of the file\n   * @param { Function }  fn          Function wrapping the code of the worker\n   */\n\n  function shimWorker(filename, fn) {\n    return function ShimWorker(forceFallback) {\n      var o = this;\n\n      if (!fn) {\n        return new Worker(filename);\n      } else if (Worker && !forceFallback) {\n        // Convert the function's inner code to a string to construct the worker\n        var source = fn.toString().replace(/^function.+?{/, '').slice(0, -1),\n            objURL = createSourceObject(source);\n        this[TARGET] = new Worker(objURL);\n        wrapTerminate(this[TARGET], objURL);\n        return this[TARGET];\n      } else {\n        var selfShim = {\n          postMessage: function postMessage(m) {\n            if (o.onmessage) {\n              setTimeout(function () {\n                o.onmessage({\n                  data: m,\n                  target: selfShim\n                });\n              });\n            }\n          }\n        };\n        fn.call(selfShim);\n\n        this.postMessage = function (m) {\n          setTimeout(function () {\n            selfShim.onmessage({\n              data: m,\n              target: o\n            });\n          });\n        };\n\n        this.isThisThread = true;\n      }\n    };\n  } // Test Worker capabilities\n\n\n  if (Worker) {\n    var testWorker,\n        objURL = createSourceObject('self.onmessage = function () {}'),\n        testArray = new Uint8Array(1);\n\n    try {\n      testWorker = new Worker(objURL); // Native browser on some Samsung devices throws for transferables, let's detect it\n\n      testWorker.postMessage(testArray, [testArray.buffer]);\n    } catch (e) {\n      Worker = null;\n    } finally {\n      URL.revokeObjectURL(objURL);\n\n      if (testWorker) {\n        testWorker.terminate();\n      }\n    }\n  }\n\n  function createSourceObject(str) {\n    try {\n      return URL.createObjectURL(new Blob([str], {\n        type: SCRIPT_TYPE\n      }));\n    } catch (e) {\n      var blob = new BlobBuilder();\n      blob.append(str);\n      return URL.createObjectURL(blob.getBlob(type));\n    }\n  }\n\n  function wrapTerminate(worker, objURL) {\n    if (!worker || !objURL) return;\n    var term = worker.terminate;\n    worker.objURL = objURL;\n\n    worker.terminate = function () {\n      if (worker.objURL) URL.revokeObjectURL(worker.objURL);\n      term.call(worker);\n    };\n  }\n\n  var TransmuxWorker = new shimWorker(\"./transmuxer-worker.worker.js\", function (window, document$$1) {\n    var self = this;\n\n    var transmuxerWorker = function () {\n      /**\n       * mux.js\n       *\n       * Copyright (c) 2015 Brightcove\n       * All rights reserved.\n       *\n       * Functions that generate fragmented MP4s suitable for use with Media\n       * Source Extensions.\n       */\n      var UINT32_MAX = Math.pow(2, 32) - 1;\n      var box, dinf, esds, ftyp, mdat, mfhd, minf, moof, moov, mvex, mvhd, trak, tkhd, mdia, mdhd, hdlr, sdtp, stbl, stsd, traf, trex, trun, types, MAJOR_BRAND, MINOR_VERSION, AVC1_BRAND, VIDEO_HDLR, AUDIO_HDLR, HDLR_TYPES, VMHD, SMHD, DREF, STCO, STSC, STSZ, STTS; // pre-calculate constants\n\n      (function () {\n        var i;\n        types = {\n          avc1: [],\n          // codingname\n          avcC: [],\n          btrt: [],\n          dinf: [],\n          dref: [],\n          esds: [],\n          ftyp: [],\n          hdlr: [],\n          mdat: [],\n          mdhd: [],\n          mdia: [],\n          mfhd: [],\n          minf: [],\n          moof: [],\n          moov: [],\n          mp4a: [],\n          // codingname\n          mvex: [],\n          mvhd: [],\n          sdtp: [],\n          smhd: [],\n          stbl: [],\n          stco: [],\n          stsc: [],\n          stsd: [],\n          stsz: [],\n          stts: [],\n          styp: [],\n          tfdt: [],\n          tfhd: [],\n          traf: [],\n          trak: [],\n          trun: [],\n          trex: [],\n          tkhd: [],\n          vmhd: []\n        }; // In environments where Uint8Array is undefined (e.g., IE8), skip set up so that we\n        // don't throw an error\n\n        if (typeof Uint8Array === 'undefined') {\n          return;\n        }\n\n        for (i in types) {\n          if (types.hasOwnProperty(i)) {\n            types[i] = [i.charCodeAt(0), i.charCodeAt(1), i.charCodeAt(2), i.charCodeAt(3)];\n          }\n        }\n\n        MAJOR_BRAND = new Uint8Array(['i'.charCodeAt(0), 's'.charCodeAt(0), 'o'.charCodeAt(0), 'm'.charCodeAt(0)]);\n        AVC1_BRAND = new Uint8Array(['a'.charCodeAt(0), 'v'.charCodeAt(0), 'c'.charCodeAt(0), '1'.charCodeAt(0)]);\n        MINOR_VERSION = new Uint8Array([0, 0, 0, 1]);\n        VIDEO_HDLR = new Uint8Array([0x00, // version 0\n        0x00, 0x00, 0x00, // flags\n        0x00, 0x00, 0x00, 0x00, // pre_defined\n        0x76, 0x69, 0x64, 0x65, // handler_type: 'vide'\n        0x00, 0x00, 0x00, 0x00, // reserved\n        0x00, 0x00, 0x00, 0x00, // reserved\n        0x00, 0x00, 0x00, 0x00, // reserved\n        0x56, 0x69, 0x64, 0x65, 0x6f, 0x48, 0x61, 0x6e, 0x64, 0x6c, 0x65, 0x72, 0x00 // name: 'VideoHandler'\n        ]);\n        AUDIO_HDLR = new Uint8Array([0x00, // version 0\n        0x00, 0x00, 0x00, // flags\n        0x00, 0x00, 0x00, 0x00, // pre_defined\n        0x73, 0x6f, 0x75, 0x6e, // handler_type: 'soun'\n        0x00, 0x00, 0x00, 0x00, // reserved\n        0x00, 0x00, 0x00, 0x00, // reserved\n        0x00, 0x00, 0x00, 0x00, // reserved\n        0x53, 0x6f, 0x75, 0x6e, 0x64, 0x48, 0x61, 0x6e, 0x64, 0x6c, 0x65, 0x72, 0x00 // name: 'SoundHandler'\n        ]);\n        HDLR_TYPES = {\n          video: VIDEO_HDLR,\n          audio: AUDIO_HDLR\n        };\n        DREF = new Uint8Array([0x00, // version 0\n        0x00, 0x00, 0x00, // flags\n        0x00, 0x00, 0x00, 0x01, // entry_count\n        0x00, 0x00, 0x00, 0x0c, // entry_size\n        0x75, 0x72, 0x6c, 0x20, // 'url' type\n        0x00, // version 0\n        0x00, 0x00, 0x01 // entry_flags\n        ]);\n        SMHD = new Uint8Array([0x00, // version\n        0x00, 0x00, 0x00, // flags\n        0x00, 0x00, // balance, 0 means centered\n        0x00, 0x00 // reserved\n        ]);\n        STCO = new Uint8Array([0x00, // version\n        0x00, 0x00, 0x00, // flags\n        0x00, 0x00, 0x00, 0x00 // entry_count\n        ]);\n        STSC = STCO;\n        STSZ = new Uint8Array([0x00, // version\n        0x00, 0x00, 0x00, // flags\n        0x00, 0x00, 0x00, 0x00, // sample_size\n        0x00, 0x00, 0x00, 0x00 // sample_count\n        ]);\n        STTS = STCO;\n        VMHD = new Uint8Array([0x00, // version\n        0x00, 0x00, 0x01, // flags\n        0x00, 0x00, // graphicsmode\n        0x00, 0x00, 0x00, 0x00, 0x00, 0x00 // opcolor\n        ]);\n      })();\n\n      box = function box(type) {\n        var payload = [],\n            size = 0,\n            i,\n            result,\n            view;\n\n        for (i = 1; i < arguments.length; i++) {\n          payload.push(arguments[i]);\n        }\n\n        i = payload.length; // calculate the total size we need to allocate\n\n        while (i--) {\n          size += payload[i].byteLength;\n        }\n\n        result = new Uint8Array(size + 8);\n        view = new DataView(result.buffer, result.byteOffset, result.byteLength);\n        view.setUint32(0, result.byteLength);\n        result.set(type, 4); // copy the payload into the result\n\n        for (i = 0, size = 8; i < payload.length; i++) {\n          result.set(payload[i], size);\n          size += payload[i].byteLength;\n        }\n\n        return result;\n      };\n\n      dinf = function dinf() {\n        return box(types.dinf, box(types.dref, DREF));\n      };\n\n      esds = function esds(track) {\n        return box(types.esds, new Uint8Array([0x00, // version\n        0x00, 0x00, 0x00, // flags\n        // ES_Descriptor\n        0x03, // tag, ES_DescrTag\n        0x19, // length\n        0x00, 0x00, // ES_ID\n        0x00, // streamDependenceFlag, URL_flag, reserved, streamPriority\n        // DecoderConfigDescriptor\n        0x04, // tag, DecoderConfigDescrTag\n        0x11, // length\n        0x40, // object type\n        0x15, // streamType\n        0x00, 0x06, 0x00, // bufferSizeDB\n        0x00, 0x00, 0xda, 0xc0, // maxBitrate\n        0x00, 0x00, 0xda, 0xc0, // avgBitrate\n        // DecoderSpecificInfo\n        0x05, // tag, DecoderSpecificInfoTag\n        0x02, // length\n        // ISO/IEC 14496-3, AudioSpecificConfig\n        // for samplingFrequencyIndex see ISO/IEC 13818-7:2006, 8.1.3.2.2, Table 35\n        track.audioobjecttype << 3 | track.samplingfrequencyindex >>> 1, track.samplingfrequencyindex << 7 | track.channelcount << 3, 0x06, 0x01, 0x02 // GASpecificConfig\n        ]));\n      };\n\n      ftyp = function ftyp() {\n        return box(types.ftyp, MAJOR_BRAND, MINOR_VERSION, MAJOR_BRAND, AVC1_BRAND);\n      };\n\n      hdlr = function hdlr(type) {\n        return box(types.hdlr, HDLR_TYPES[type]);\n      };\n\n      mdat = function mdat(data) {\n        return box(types.mdat, data);\n      };\n\n      mdhd = function mdhd(track) {\n        var result = new Uint8Array([0x00, // version 0\n        0x00, 0x00, 0x00, // flags\n        0x00, 0x00, 0x00, 0x02, // creation_time\n        0x00, 0x00, 0x00, 0x03, // modification_time\n        0x00, 0x01, 0x5f, 0x90, // timescale, 90,000 \"ticks\" per second\n        track.duration >>> 24 & 0xFF, track.duration >>> 16 & 0xFF, track.duration >>> 8 & 0xFF, track.duration & 0xFF, // duration\n        0x55, 0xc4, // 'und' language (undetermined)\n        0x00, 0x00]); // Use the sample rate from the track metadata, when it is\n        // defined. The sample rate can be parsed out of an ADTS header, for\n        // instance.\n\n        if (track.samplerate) {\n          result[12] = track.samplerate >>> 24 & 0xFF;\n          result[13] = track.samplerate >>> 16 & 0xFF;\n          result[14] = track.samplerate >>> 8 & 0xFF;\n          result[15] = track.samplerate & 0xFF;\n        }\n\n        return box(types.mdhd, result);\n      };\n\n      mdia = function mdia(track) {\n        return box(types.mdia, mdhd(track), hdlr(track.type), minf(track));\n      };\n\n      mfhd = function mfhd(sequenceNumber) {\n        return box(types.mfhd, new Uint8Array([0x00, 0x00, 0x00, 0x00, // flags\n        (sequenceNumber & 0xFF000000) >> 24, (sequenceNumber & 0xFF0000) >> 16, (sequenceNumber & 0xFF00) >> 8, sequenceNumber & 0xFF // sequence_number\n        ]));\n      };\n\n      minf = function minf(track) {\n        return box(types.minf, track.type === 'video' ? box(types.vmhd, VMHD) : box(types.smhd, SMHD), dinf(), stbl(track));\n      };\n\n      moof = function moof(sequenceNumber, tracks) {\n        var trackFragments = [],\n            i = tracks.length; // build traf boxes for each track fragment\n\n        while (i--) {\n          trackFragments[i] = traf(tracks[i]);\n        }\n\n        return box.apply(null, [types.moof, mfhd(sequenceNumber)].concat(trackFragments));\n      };\n      /**\n       * Returns a movie box.\n       * @param tracks {array} the tracks associated with this movie\n       * @see ISO/IEC 14496-12:2012(E), section 8.2.1\n       */\n\n\n      moov = function moov(tracks) {\n        var i = tracks.length,\n            boxes = [];\n\n        while (i--) {\n          boxes[i] = trak(tracks[i]);\n        }\n\n        return box.apply(null, [types.moov, mvhd(0xffffffff)].concat(boxes).concat(mvex(tracks)));\n      };\n\n      mvex = function mvex(tracks) {\n        var i = tracks.length,\n            boxes = [];\n\n        while (i--) {\n          boxes[i] = trex(tracks[i]);\n        }\n\n        return box.apply(null, [types.mvex].concat(boxes));\n      };\n\n      mvhd = function mvhd(duration) {\n        var bytes = new Uint8Array([0x00, // version 0\n        0x00, 0x00, 0x00, // flags\n        0x00, 0x00, 0x00, 0x01, // creation_time\n        0x00, 0x00, 0x00, 0x02, // modification_time\n        0x00, 0x01, 0x5f, 0x90, // timescale, 90,000 \"ticks\" per second\n        (duration & 0xFF000000) >> 24, (duration & 0xFF0000) >> 16, (duration & 0xFF00) >> 8, duration & 0xFF, // duration\n        0x00, 0x01, 0x00, 0x00, // 1.0 rate\n        0x01, 0x00, // 1.0 volume\n        0x00, 0x00, // reserved\n        0x00, 0x00, 0x00, 0x00, // reserved\n        0x00, 0x00, 0x00, 0x00, // reserved\n        0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, // transformation: unity matrix\n        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // pre_defined\n        0xff, 0xff, 0xff, 0xff // next_track_ID\n        ]);\n        return box(types.mvhd, bytes);\n      };\n\n      sdtp = function sdtp(track) {\n        var samples = track.samples || [],\n            bytes = new Uint8Array(4 + samples.length),\n            flags,\n            i; // leave the full box header (4 bytes) all zero\n        // write the sample table\n\n        for (i = 0; i < samples.length; i++) {\n          flags = samples[i].flags;\n          bytes[i + 4] = flags.dependsOn << 4 | flags.isDependedOn << 2 | flags.hasRedundancy;\n        }\n\n        return box(types.sdtp, bytes);\n      };\n\n      stbl = function stbl(track) {\n        return box(types.stbl, stsd(track), box(types.stts, STTS), box(types.stsc, STSC), box(types.stsz, STSZ), box(types.stco, STCO));\n      };\n\n      (function () {\n        var videoSample, audioSample;\n\n        stsd = function stsd(track) {\n          return box(types.stsd, new Uint8Array([0x00, // version 0\n          0x00, 0x00, 0x00, // flags\n          0x00, 0x00, 0x00, 0x01]), track.type === 'video' ? videoSample(track) : audioSample(track));\n        };\n\n        videoSample = function videoSample(track) {\n          var sps = track.sps || [],\n              pps = track.pps || [],\n              sequenceParameterSets = [],\n              pictureParameterSets = [],\n              i; // assemble the SPSs\n\n          for (i = 0; i < sps.length; i++) {\n            sequenceParameterSets.push((sps[i].byteLength & 0xFF00) >>> 8);\n            sequenceParameterSets.push(sps[i].byteLength & 0xFF); // sequenceParameterSetLength\n\n            sequenceParameterSets = sequenceParameterSets.concat(Array.prototype.slice.call(sps[i])); // SPS\n          } // assemble the PPSs\n\n\n          for (i = 0; i < pps.length; i++) {\n            pictureParameterSets.push((pps[i].byteLength & 0xFF00) >>> 8);\n            pictureParameterSets.push(pps[i].byteLength & 0xFF);\n            pictureParameterSets = pictureParameterSets.concat(Array.prototype.slice.call(pps[i]));\n          }\n\n          return box(types.avc1, new Uint8Array([0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // reserved\n          0x00, 0x01, // data_reference_index\n          0x00, 0x00, // pre_defined\n          0x00, 0x00, // reserved\n          0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // pre_defined\n          (track.width & 0xff00) >> 8, track.width & 0xff, // width\n          (track.height & 0xff00) >> 8, track.height & 0xff, // height\n          0x00, 0x48, 0x00, 0x00, // horizresolution\n          0x00, 0x48, 0x00, 0x00, // vertresolution\n          0x00, 0x00, 0x00, 0x00, // reserved\n          0x00, 0x01, // frame_count\n          0x13, 0x76, 0x69, 0x64, 0x65, 0x6f, 0x6a, 0x73, 0x2d, 0x63, 0x6f, 0x6e, 0x74, 0x72, 0x69, 0x62, 0x2d, 0x68, 0x6c, 0x73, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // compressorname\n          0x00, 0x18, // depth = 24\n          0x11, 0x11 // pre_defined = -1\n          ]), box(types.avcC, new Uint8Array([0x01, // configurationVersion\n          track.profileIdc, // AVCProfileIndication\n          track.profileCompatibility, // profile_compatibility\n          track.levelIdc, // AVCLevelIndication\n          0xff // lengthSizeMinusOne, hard-coded to 4 bytes\n          ].concat([sps.length // numOfSequenceParameterSets\n          ]).concat(sequenceParameterSets).concat([pps.length // numOfPictureParameterSets\n          ]).concat(pictureParameterSets))), // \"PPS\"\n          box(types.btrt, new Uint8Array([0x00, 0x1c, 0x9c, 0x80, // bufferSizeDB\n          0x00, 0x2d, 0xc6, 0xc0, // maxBitrate\n          0x00, 0x2d, 0xc6, 0xc0])) // avgBitrate\n          );\n        };\n\n        audioSample = function audioSample(track) {\n          return box(types.mp4a, new Uint8Array([// SampleEntry, ISO/IEC 14496-12\n          0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // reserved\n          0x00, 0x01, // data_reference_index\n          // AudioSampleEntry, ISO/IEC 14496-12\n          0x00, 0x00, 0x00, 0x00, // reserved\n          0x00, 0x00, 0x00, 0x00, // reserved\n          (track.channelcount & 0xff00) >> 8, track.channelcount & 0xff, // channelcount\n          (track.samplesize & 0xff00) >> 8, track.samplesize & 0xff, // samplesize\n          0x00, 0x00, // pre_defined\n          0x00, 0x00, // reserved\n          (track.samplerate & 0xff00) >> 8, track.samplerate & 0xff, 0x00, 0x00 // samplerate, 16.16\n          // MP4AudioSampleEntry, ISO/IEC 14496-14\n          ]), esds(track));\n        };\n      })();\n\n      tkhd = function tkhd(track) {\n        var result = new Uint8Array([0x00, // version 0\n        0x00, 0x00, 0x07, // flags\n        0x00, 0x00, 0x00, 0x00, // creation_time\n        0x00, 0x00, 0x00, 0x00, // modification_time\n        (track.id & 0xFF000000) >> 24, (track.id & 0xFF0000) >> 16, (track.id & 0xFF00) >> 8, track.id & 0xFF, // track_ID\n        0x00, 0x00, 0x00, 0x00, // reserved\n        (track.duration & 0xFF000000) >> 24, (track.duration & 0xFF0000) >> 16, (track.duration & 0xFF00) >> 8, track.duration & 0xFF, // duration\n        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // reserved\n        0x00, 0x00, // layer\n        0x00, 0x00, // alternate_group\n        0x01, 0x00, // non-audio track volume\n        0x00, 0x00, // reserved\n        0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, // transformation: unity matrix\n        (track.width & 0xFF00) >> 8, track.width & 0xFF, 0x00, 0x00, // width\n        (track.height & 0xFF00) >> 8, track.height & 0xFF, 0x00, 0x00 // height\n        ]);\n        return box(types.tkhd, result);\n      };\n      /**\n       * Generate a track fragment (traf) box. A traf box collects metadata\n       * about tracks in a movie fragment (moof) box.\n       */\n\n\n      traf = function traf(track) {\n        var trackFragmentHeader, trackFragmentDecodeTime, trackFragmentRun, sampleDependencyTable, dataOffset, upperWordBaseMediaDecodeTime, lowerWordBaseMediaDecodeTime;\n        trackFragmentHeader = box(types.tfhd, new Uint8Array([0x00, // version 0\n        0x00, 0x00, 0x3a, // flags\n        (track.id & 0xFF000000) >> 24, (track.id & 0xFF0000) >> 16, (track.id & 0xFF00) >> 8, track.id & 0xFF, // track_ID\n        0x00, 0x00, 0x00, 0x01, // sample_description_index\n        0x00, 0x00, 0x00, 0x00, // default_sample_duration\n        0x00, 0x00, 0x00, 0x00, // default_sample_size\n        0x00, 0x00, 0x00, 0x00 // default_sample_flags\n        ]));\n        upperWordBaseMediaDecodeTime = Math.floor(track.baseMediaDecodeTime / (UINT32_MAX + 1));\n        lowerWordBaseMediaDecodeTime = Math.floor(track.baseMediaDecodeTime % (UINT32_MAX + 1));\n        trackFragmentDecodeTime = box(types.tfdt, new Uint8Array([0x01, // version 1\n        0x00, 0x00, 0x00, // flags\n        // baseMediaDecodeTime\n        upperWordBaseMediaDecodeTime >>> 24 & 0xFF, upperWordBaseMediaDecodeTime >>> 16 & 0xFF, upperWordBaseMediaDecodeTime >>> 8 & 0xFF, upperWordBaseMediaDecodeTime & 0xFF, lowerWordBaseMediaDecodeTime >>> 24 & 0xFF, lowerWordBaseMediaDecodeTime >>> 16 & 0xFF, lowerWordBaseMediaDecodeTime >>> 8 & 0xFF, lowerWordBaseMediaDecodeTime & 0xFF])); // the data offset specifies the number of bytes from the start of\n        // the containing moof to the first payload byte of the associated\n        // mdat\n\n        dataOffset = 32 + // tfhd\n        20 + // tfdt\n        8 + // traf header\n        16 + // mfhd\n        8 + // moof header\n        8; // mdat header\n        // audio tracks require less metadata\n\n        if (track.type === 'audio') {\n          trackFragmentRun = trun(track, dataOffset);\n          return box(types.traf, trackFragmentHeader, trackFragmentDecodeTime, trackFragmentRun);\n        } // video tracks should contain an independent and disposable samples\n        // box (sdtp)\n        // generate one and adjust offsets to match\n\n\n        sampleDependencyTable = sdtp(track);\n        trackFragmentRun = trun(track, sampleDependencyTable.length + dataOffset);\n        return box(types.traf, trackFragmentHeader, trackFragmentDecodeTime, trackFragmentRun, sampleDependencyTable);\n      };\n      /**\n       * Generate a track box.\n       * @param track {object} a track definition\n       * @return {Uint8Array} the track box\n       */\n\n\n      trak = function trak(track) {\n        track.duration = track.duration || 0xffffffff;\n        return box(types.trak, tkhd(track), mdia(track));\n      };\n\n      trex = function trex(track) {\n        var result = new Uint8Array([0x00, // version 0\n        0x00, 0x00, 0x00, // flags\n        (track.id & 0xFF000000) >> 24, (track.id & 0xFF0000) >> 16, (track.id & 0xFF00) >> 8, track.id & 0xFF, // track_ID\n        0x00, 0x00, 0x00, 0x01, // default_sample_description_index\n        0x00, 0x00, 0x00, 0x00, // default_sample_duration\n        0x00, 0x00, 0x00, 0x00, // default_sample_size\n        0x00, 0x01, 0x00, 0x01 // default_sample_flags\n        ]); // the last two bytes of default_sample_flags is the sample\n        // degradation priority, a hint about the importance of this sample\n        // relative to others. Lower the degradation priority for all sample\n        // types other than video.\n\n        if (track.type !== 'video') {\n          result[result.length - 1] = 0x00;\n        }\n\n        return box(types.trex, result);\n      };\n\n      (function () {\n        var audioTrun, videoTrun, trunHeader; // This method assumes all samples are uniform. That is, if a\n        // duration is present for the first sample, it will be present for\n        // all subsequent samples.\n        // see ISO/IEC 14496-12:2012, Section 8.8.8.1\n\n        trunHeader = function trunHeader(samples, offset) {\n          var durationPresent = 0,\n              sizePresent = 0,\n              flagsPresent = 0,\n              compositionTimeOffset = 0; // trun flag constants\n\n          if (samples.length) {\n            if (samples[0].duration !== undefined) {\n              durationPresent = 0x1;\n            }\n\n            if (samples[0].size !== undefined) {\n              sizePresent = 0x2;\n            }\n\n            if (samples[0].flags !== undefined) {\n              flagsPresent = 0x4;\n            }\n\n            if (samples[0].compositionTimeOffset !== undefined) {\n              compositionTimeOffset = 0x8;\n            }\n          }\n\n          return [0x00, // version 0\n          0x00, durationPresent | sizePresent | flagsPresent | compositionTimeOffset, 0x01, // flags\n          (samples.length & 0xFF000000) >>> 24, (samples.length & 0xFF0000) >>> 16, (samples.length & 0xFF00) >>> 8, samples.length & 0xFF, // sample_count\n          (offset & 0xFF000000) >>> 24, (offset & 0xFF0000) >>> 16, (offset & 0xFF00) >>> 8, offset & 0xFF // data_offset\n          ];\n        };\n\n        videoTrun = function videoTrun(track, offset) {\n          var bytes, samples, sample, i;\n          samples = track.samples || [];\n          offset += 8 + 12 + 16 * samples.length;\n          bytes = trunHeader(samples, offset);\n\n          for (i = 0; i < samples.length; i++) {\n            sample = samples[i];\n            bytes = bytes.concat([(sample.duration & 0xFF000000) >>> 24, (sample.duration & 0xFF0000) >>> 16, (sample.duration & 0xFF00) >>> 8, sample.duration & 0xFF, // sample_duration\n            (sample.size & 0xFF000000) >>> 24, (sample.size & 0xFF0000) >>> 16, (sample.size & 0xFF00) >>> 8, sample.size & 0xFF, // sample_size\n            sample.flags.isLeading << 2 | sample.flags.dependsOn, sample.flags.isDependedOn << 6 | sample.flags.hasRedundancy << 4 | sample.flags.paddingValue << 1 | sample.flags.isNonSyncSample, sample.flags.degradationPriority & 0xF0 << 8, sample.flags.degradationPriority & 0x0F, // sample_flags\n            (sample.compositionTimeOffset & 0xFF000000) >>> 24, (sample.compositionTimeOffset & 0xFF0000) >>> 16, (sample.compositionTimeOffset & 0xFF00) >>> 8, sample.compositionTimeOffset & 0xFF // sample_composition_time_offset\n            ]);\n          }\n\n          return box(types.trun, new Uint8Array(bytes));\n        };\n\n        audioTrun = function audioTrun(track, offset) {\n          var bytes, samples, sample, i;\n          samples = track.samples || [];\n          offset += 8 + 12 + 8 * samples.length;\n          bytes = trunHeader(samples, offset);\n\n          for (i = 0; i < samples.length; i++) {\n            sample = samples[i];\n            bytes = bytes.concat([(sample.duration & 0xFF000000) >>> 24, (sample.duration & 0xFF0000) >>> 16, (sample.duration & 0xFF00) >>> 8, sample.duration & 0xFF, // sample_duration\n            (sample.size & 0xFF000000) >>> 24, (sample.size & 0xFF0000) >>> 16, (sample.size & 0xFF00) >>> 8, sample.size & 0xFF]); // sample_size\n          }\n\n          return box(types.trun, new Uint8Array(bytes));\n        };\n\n        trun = function trun(track, offset) {\n          if (track.type === 'audio') {\n            return audioTrun(track, offset);\n          }\n\n          return videoTrun(track, offset);\n        };\n      })();\n\n      var mp4Generator = {\n        ftyp: ftyp,\n        mdat: mdat,\n        moof: moof,\n        moov: moov,\n        initSegment: function initSegment(tracks) {\n          var fileType = ftyp(),\n              movie = moov(tracks),\n              result;\n          result = new Uint8Array(fileType.byteLength + movie.byteLength);\n          result.set(fileType);\n          result.set(movie, fileType.byteLength);\n          return result;\n        }\n      };\n\n      var toUnsigned = function toUnsigned(value) {\n        return value >>> 0;\n      };\n\n      var bin = {\n        toUnsigned: toUnsigned\n      };\n      var toUnsigned$1 = bin.toUnsigned;\n\n      var _findBox, parseType, timescale, startTime, getVideoTrackIds; // Find the data for a box specified by its path\n\n\n      _findBox = function findBox(data, path) {\n        var results = [],\n            i,\n            size,\n            type,\n            end,\n            subresults;\n\n        if (!path.length) {\n          // short-circuit the search for empty paths\n          return null;\n        }\n\n        for (i = 0; i < data.byteLength;) {\n          size = toUnsigned$1(data[i] << 24 | data[i + 1] << 16 | data[i + 2] << 8 | data[i + 3]);\n          type = parseType(data.subarray(i + 4, i + 8));\n          end = size > 1 ? i + size : data.byteLength;\n\n          if (type === path[0]) {\n            if (path.length === 1) {\n              // this is the end of the path and we've found the box we were\n              // looking for\n              results.push(data.subarray(i + 8, end));\n            } else {\n              // recursively search for the next box along the path\n              subresults = _findBox(data.subarray(i + 8, end), path.slice(1));\n\n              if (subresults.length) {\n                results = results.concat(subresults);\n              }\n            }\n          }\n\n          i = end;\n        } // we've finished searching all of data\n\n\n        return results;\n      };\n      /**\n       * Returns the string representation of an ASCII encoded four byte buffer.\n       * @param buffer {Uint8Array} a four-byte buffer to translate\n       * @return {string} the corresponding string\n       */\n\n\n      parseType = function parseType(buffer) {\n        var result = '';\n        result += String.fromCharCode(buffer[0]);\n        result += String.fromCharCode(buffer[1]);\n        result += String.fromCharCode(buffer[2]);\n        result += String.fromCharCode(buffer[3]);\n        return result;\n      };\n      /**\n       * Parses an MP4 initialization segment and extracts the timescale\n       * values for any declared tracks. Timescale values indicate the\n       * number of clock ticks per second to assume for time-based values\n       * elsewhere in the MP4.\n       *\n       * To determine the start time of an MP4, you need two pieces of\n       * information: the timescale unit and the earliest base media decode\n       * time. Multiple timescales can be specified within an MP4 but the\n       * base media decode time is always expressed in the timescale from\n       * the media header box for the track:\n       * ```\n       * moov > trak > mdia > mdhd.timescale\n       * ```\n       * @param init {Uint8Array} the bytes of the init segment\n       * @return {object} a hash of track ids to timescale values or null if\n       * the init segment is malformed.\n       */\n\n\n      timescale = function timescale(init) {\n        var result = {},\n            traks = _findBox(init, ['moov', 'trak']); // mdhd timescale\n\n\n        return traks.reduce(function (result, trak) {\n          var tkhd, version, index, id, mdhd;\n          tkhd = _findBox(trak, ['tkhd'])[0];\n\n          if (!tkhd) {\n            return null;\n          }\n\n          version = tkhd[0];\n          index = version === 0 ? 12 : 20;\n          id = toUnsigned$1(tkhd[index] << 24 | tkhd[index + 1] << 16 | tkhd[index + 2] << 8 | tkhd[index + 3]);\n          mdhd = _findBox(trak, ['mdia', 'mdhd'])[0];\n\n          if (!mdhd) {\n            return null;\n          }\n\n          version = mdhd[0];\n          index = version === 0 ? 12 : 20;\n          result[id] = toUnsigned$1(mdhd[index] << 24 | mdhd[index + 1] << 16 | mdhd[index + 2] << 8 | mdhd[index + 3]);\n          return result;\n        }, result);\n      };\n      /**\n       * Determine the base media decode start time, in seconds, for an MP4\n       * fragment. If multiple fragments are specified, the earliest time is\n       * returned.\n       *\n       * The base media decode time can be parsed from track fragment\n       * metadata:\n       * ```\n       * moof > traf > tfdt.baseMediaDecodeTime\n       * ```\n       * It requires the timescale value from the mdhd to interpret.\n       *\n       * @param timescale {object} a hash of track ids to timescale values.\n       * @return {number} the earliest base media decode start time for the\n       * fragment, in seconds\n       */\n\n\n      startTime = function startTime(timescale, fragment) {\n        var trafs, baseTimes, result; // we need info from two childrend of each track fragment box\n\n        trafs = _findBox(fragment, ['moof', 'traf']); // determine the start times for each track\n\n        baseTimes = [].concat.apply([], trafs.map(function (traf) {\n          return _findBox(traf, ['tfhd']).map(function (tfhd) {\n            var id, scale, baseTime; // get the track id from the tfhd\n\n            id = toUnsigned$1(tfhd[4] << 24 | tfhd[5] << 16 | tfhd[6] << 8 | tfhd[7]); // assume a 90kHz clock if no timescale was specified\n\n            scale = timescale[id] || 90e3; // get the base media decode time from the tfdt\n\n            baseTime = _findBox(traf, ['tfdt']).map(function (tfdt) {\n              var version, result;\n              version = tfdt[0];\n              result = toUnsigned$1(tfdt[4] << 24 | tfdt[5] << 16 | tfdt[6] << 8 | tfdt[7]);\n\n              if (version === 1) {\n                result *= Math.pow(2, 32);\n                result += toUnsigned$1(tfdt[8] << 24 | tfdt[9] << 16 | tfdt[10] << 8 | tfdt[11]);\n              }\n\n              return result;\n            })[0];\n            baseTime = baseTime || Infinity; // convert base time to seconds\n\n            return baseTime / scale;\n          });\n        })); // return the minimum\n\n        result = Math.min.apply(null, baseTimes);\n        return isFinite(result) ? result : 0;\n      };\n      /**\n        * Find the trackIds of the video tracks in this source.\n        * Found by parsing the Handler Reference and Track Header Boxes:\n        *   moov > trak > mdia > hdlr\n        *   moov > trak > tkhd\n        *\n        * @param {Uint8Array} init - The bytes of the init segment for this source\n        * @return {Number[]} A list of trackIds\n        *\n        * @see ISO-BMFF-12/2015, Section 8.4.3\n       **/\n\n\n      getVideoTrackIds = function getVideoTrackIds(init) {\n        var traks = _findBox(init, ['moov', 'trak']);\n\n        var videoTrackIds = [];\n        traks.forEach(function (trak) {\n          var hdlrs = _findBox(trak, ['mdia', 'hdlr']);\n\n          var tkhds = _findBox(trak, ['tkhd']);\n\n          hdlrs.forEach(function (hdlr, index) {\n            var handlerType = parseType(hdlr.subarray(8, 12));\n            var tkhd = tkhds[index];\n            var view;\n            var version;\n            var trackId;\n\n            if (handlerType === 'vide') {\n              view = new DataView(tkhd.buffer, tkhd.byteOffset, tkhd.byteLength);\n              version = view.getUint8(0);\n              trackId = version === 0 ? view.getUint32(12) : view.getUint32(20);\n              videoTrackIds.push(trackId);\n            }\n          });\n        });\n        return videoTrackIds;\n      };\n\n      var probe$$1 = {\n        findBox: _findBox,\n        parseType: parseType,\n        timescale: timescale,\n        startTime: startTime,\n        videoTrackIds: getVideoTrackIds\n      };\n      /**\n       * mux.js\n       *\n       * Copyright (c) 2014 Brightcove\n       * All rights reserved.\n       *\n       * A lightweight readable stream implemention that handles event dispatching.\n       * Objects that inherit from streams should call init in their constructors.\n       */\n\n      var Stream = function Stream() {\n        this.init = function () {\n          var listeners = {};\n          /**\n           * Add a listener for a specified event type.\n           * @param type {string} the event name\n           * @param listener {function} the callback to be invoked when an event of\n           * the specified type occurs\n           */\n\n          this.on = function (type, listener) {\n            if (!listeners[type]) {\n              listeners[type] = [];\n            }\n\n            listeners[type] = listeners[type].concat(listener);\n          };\n          /**\n           * Remove a listener for a specified event type.\n           * @param type {string} the event name\n           * @param listener {function} a function previously registered for this\n           * type of event through `on`\n           */\n\n\n          this.off = function (type, listener) {\n            var index;\n\n            if (!listeners[type]) {\n              return false;\n            }\n\n            index = listeners[type].indexOf(listener);\n            listeners[type] = listeners[type].slice();\n            listeners[type].splice(index, 1);\n            return index > -1;\n          };\n          /**\n           * Trigger an event of the specified type on this stream. Any additional\n           * arguments to this function are passed as parameters to event listeners.\n           * @param type {string} the event name\n           */\n\n\n          this.trigger = function (type) {\n            var callbacks, i, length, args;\n            callbacks = listeners[type];\n\n            if (!callbacks) {\n              return;\n            } // Slicing the arguments on every invocation of this method\n            // can add a significant amount of overhead. Avoid the\n            // intermediate object creation for the common case of a\n            // single callback argument\n\n\n            if (arguments.length === 2) {\n              length = callbacks.length;\n\n              for (i = 0; i < length; ++i) {\n                callbacks[i].call(this, arguments[1]);\n              }\n            } else {\n              args = [];\n              i = arguments.length;\n\n              for (i = 1; i < arguments.length; ++i) {\n                args.push(arguments[i]);\n              }\n\n              length = callbacks.length;\n\n              for (i = 0; i < length; ++i) {\n                callbacks[i].apply(this, args);\n              }\n            }\n          };\n          /**\n           * Destroys the stream and cleans up.\n           */\n\n\n          this.dispose = function () {\n            listeners = {};\n          };\n        };\n      };\n      /**\n       * Forwards all `data` events on this stream to the destination stream. The\n       * destination stream should provide a method `push` to receive the data\n       * events as they arrive.\n       * @param destination {stream} the stream that will receive all `data` events\n       * @param autoFlush {boolean} if false, we will not call `flush` on the destination\n       *                            when the current stream emits a 'done' event\n       * @see http://nodejs.org/api/stream.html#stream_readable_pipe_destination_options\n       */\n\n\n      Stream.prototype.pipe = function (destination) {\n        this.on('data', function (data) {\n          destination.push(data);\n        });\n        this.on('done', function (flushSource) {\n          destination.flush(flushSource);\n        });\n        return destination;\n      }; // Default stream functions that are expected to be overridden to perform\n      // actual work. These are provided by the prototype as a sort of no-op\n      // implementation so that we don't have to check for their existence in the\n      // `pipe` function above.\n\n\n      Stream.prototype.push = function (data) {\n        this.trigger('data', data);\n      };\n\n      Stream.prototype.flush = function (flushSource) {\n        this.trigger('done', flushSource);\n      };\n\n      var stream = Stream; // Convert an array of nal units into an array of frames with each frame being\n      // composed of the nal units that make up that frame\n      // Also keep track of cummulative data about the frame from the nal units such\n      // as the frame duration, starting pts, etc.\n\n      var groupNalsIntoFrames = function groupNalsIntoFrames(nalUnits) {\n        var i,\n            currentNal,\n            currentFrame = [],\n            frames = [];\n        currentFrame.byteLength = 0;\n\n        for (i = 0; i < nalUnits.length; i++) {\n          currentNal = nalUnits[i]; // Split on 'aud'-type nal units\n\n          if (currentNal.nalUnitType === 'access_unit_delimiter_rbsp') {\n            // Since the very first nal unit is expected to be an AUD\n            // only push to the frames array when currentFrame is not empty\n            if (currentFrame.length) {\n              currentFrame.duration = currentNal.dts - currentFrame.dts;\n              frames.push(currentFrame);\n            }\n\n            currentFrame = [currentNal];\n            currentFrame.byteLength = currentNal.data.byteLength;\n            currentFrame.pts = currentNal.pts;\n            currentFrame.dts = currentNal.dts;\n          } else {\n            // Specifically flag key frames for ease of use later\n            if (currentNal.nalUnitType === 'slice_layer_without_partitioning_rbsp_idr') {\n              currentFrame.keyFrame = true;\n            }\n\n            currentFrame.duration = currentNal.dts - currentFrame.dts;\n            currentFrame.byteLength += currentNal.data.byteLength;\n            currentFrame.push(currentNal);\n          }\n        } // For the last frame, use the duration of the previous frame if we\n        // have nothing better to go on\n\n\n        if (frames.length && (!currentFrame.duration || currentFrame.duration <= 0)) {\n          currentFrame.duration = frames[frames.length - 1].duration;\n        } // Push the final frame\n\n\n        frames.push(currentFrame);\n        return frames;\n      }; // Convert an array of frames into an array of Gop with each Gop being composed\n      // of the frames that make up that Gop\n      // Also keep track of cummulative data about the Gop from the frames such as the\n      // Gop duration, starting pts, etc.\n\n\n      var groupFramesIntoGops = function groupFramesIntoGops(frames) {\n        var i,\n            currentFrame,\n            currentGop = [],\n            gops = []; // We must pre-set some of the values on the Gop since we\n        // keep running totals of these values\n\n        currentGop.byteLength = 0;\n        currentGop.nalCount = 0;\n        currentGop.duration = 0;\n        currentGop.pts = frames[0].pts;\n        currentGop.dts = frames[0].dts; // store some metadata about all the Gops\n\n        gops.byteLength = 0;\n        gops.nalCount = 0;\n        gops.duration = 0;\n        gops.pts = frames[0].pts;\n        gops.dts = frames[0].dts;\n\n        for (i = 0; i < frames.length; i++) {\n          currentFrame = frames[i];\n\n          if (currentFrame.keyFrame) {\n            // Since the very first frame is expected to be an keyframe\n            // only push to the gops array when currentGop is not empty\n            if (currentGop.length) {\n              gops.push(currentGop);\n              gops.byteLength += currentGop.byteLength;\n              gops.nalCount += currentGop.nalCount;\n              gops.duration += currentGop.duration;\n            }\n\n            currentGop = [currentFrame];\n            currentGop.nalCount = currentFrame.length;\n            currentGop.byteLength = currentFrame.byteLength;\n            currentGop.pts = currentFrame.pts;\n            currentGop.dts = currentFrame.dts;\n            currentGop.duration = currentFrame.duration;\n          } else {\n            currentGop.duration += currentFrame.duration;\n            currentGop.nalCount += currentFrame.length;\n            currentGop.byteLength += currentFrame.byteLength;\n            currentGop.push(currentFrame);\n          }\n        }\n\n        if (gops.length && currentGop.duration <= 0) {\n          currentGop.duration = gops[gops.length - 1].duration;\n        }\n\n        gops.byteLength += currentGop.byteLength;\n        gops.nalCount += currentGop.nalCount;\n        gops.duration += currentGop.duration; // push the final Gop\n\n        gops.push(currentGop);\n        return gops;\n      };\n      /*\n       * Search for the first keyframe in the GOPs and throw away all frames\n       * until that keyframe. Then extend the duration of the pulled keyframe\n       * and pull the PTS and DTS of the keyframe so that it covers the time\n       * range of the frames that were disposed.\n       *\n       * @param {Array} gops video GOPs\n       * @returns {Array} modified video GOPs\n       */\n\n\n      var extendFirstKeyFrame = function extendFirstKeyFrame(gops) {\n        var currentGop;\n\n        if (!gops[0][0].keyFrame && gops.length > 1) {\n          // Remove the first GOP\n          currentGop = gops.shift();\n          gops.byteLength -= currentGop.byteLength;\n          gops.nalCount -= currentGop.nalCount; // Extend the first frame of what is now the\n          // first gop to cover the time period of the\n          // frames we just removed\n\n          gops[0][0].dts = currentGop.dts;\n          gops[0][0].pts = currentGop.pts;\n          gops[0][0].duration += currentGop.duration;\n        }\n\n        return gops;\n      };\n      /**\n       * Default sample object\n       * see ISO/IEC 14496-12:2012, section 8.6.4.3\n       */\n\n\n      var createDefaultSample = function createDefaultSample() {\n        return {\n          size: 0,\n          flags: {\n            isLeading: 0,\n            dependsOn: 1,\n            isDependedOn: 0,\n            hasRedundancy: 0,\n            degradationPriority: 0,\n            isNonSyncSample: 1\n          }\n        };\n      };\n      /*\n       * Collates information from a video frame into an object for eventual\n       * entry into an MP4 sample table.\n       *\n       * @param {Object} frame the video frame\n       * @param {Number} dataOffset the byte offset to position the sample\n       * @return {Object} object containing sample table info for a frame\n       */\n\n\n      var sampleForFrame = function sampleForFrame(frame, dataOffset) {\n        var sample = createDefaultSample();\n        sample.dataOffset = dataOffset;\n        sample.compositionTimeOffset = frame.pts - frame.dts;\n        sample.duration = frame.duration;\n        sample.size = 4 * frame.length; // Space for nal unit size\n\n        sample.size += frame.byteLength;\n\n        if (frame.keyFrame) {\n          sample.flags.dependsOn = 2;\n          sample.flags.isNonSyncSample = 0;\n        }\n\n        return sample;\n      }; // generate the track's sample table from an array of gops\n\n\n      var generateSampleTable = function generateSampleTable(gops, baseDataOffset) {\n        var h,\n            i,\n            sample,\n            currentGop,\n            currentFrame,\n            dataOffset = baseDataOffset || 0,\n            samples = [];\n\n        for (h = 0; h < gops.length; h++) {\n          currentGop = gops[h];\n\n          for (i = 0; i < currentGop.length; i++) {\n            currentFrame = currentGop[i];\n            sample = sampleForFrame(currentFrame, dataOffset);\n            dataOffset += sample.size;\n            samples.push(sample);\n          }\n        }\n\n        return samples;\n      }; // generate the track's raw mdat data from an array of gops\n\n\n      var concatenateNalData = function concatenateNalData(gops) {\n        var h,\n            i,\n            j,\n            currentGop,\n            currentFrame,\n            currentNal,\n            dataOffset = 0,\n            nalsByteLength = gops.byteLength,\n            numberOfNals = gops.nalCount,\n            totalByteLength = nalsByteLength + 4 * numberOfNals,\n            data = new Uint8Array(totalByteLength),\n            view = new DataView(data.buffer); // For each Gop..\n\n        for (h = 0; h < gops.length; h++) {\n          currentGop = gops[h]; // For each Frame..\n\n          for (i = 0; i < currentGop.length; i++) {\n            currentFrame = currentGop[i]; // For each NAL..\n\n            for (j = 0; j < currentFrame.length; j++) {\n              currentNal = currentFrame[j];\n              view.setUint32(dataOffset, currentNal.data.byteLength);\n              dataOffset += 4;\n              data.set(currentNal.data, dataOffset);\n              dataOffset += currentNal.data.byteLength;\n            }\n          }\n        }\n\n        return data;\n      };\n\n      var frameUtils = {\n        groupNalsIntoFrames: groupNalsIntoFrames,\n        groupFramesIntoGops: groupFramesIntoGops,\n        extendFirstKeyFrame: extendFirstKeyFrame,\n        generateSampleTable: generateSampleTable,\n        concatenateNalData: concatenateNalData\n      };\n      var highPrefix = [33, 16, 5, 32, 164, 27];\n      var lowPrefix = [33, 65, 108, 84, 1, 2, 4, 8, 168, 2, 4, 8, 17, 191, 252];\n\n      var zeroFill = function zeroFill(count) {\n        var a = [];\n\n        while (count--) {\n          a.push(0);\n        }\n\n        return a;\n      };\n\n      var makeTable = function makeTable(metaTable) {\n        return Object.keys(metaTable).reduce(function (obj, key) {\n          obj[key] = new Uint8Array(metaTable[key].reduce(function (arr, part) {\n            return arr.concat(part);\n          }, []));\n          return obj;\n        }, {});\n      }; // Frames-of-silence to use for filling in missing AAC frames\n\n\n      var coneOfSilence = {\n        96000: [highPrefix, [227, 64], zeroFill(154), [56]],\n        88200: [highPrefix, [231], zeroFill(170), [56]],\n        64000: [highPrefix, [248, 192], zeroFill(240), [56]],\n        48000: [highPrefix, [255, 192], zeroFill(268), [55, 148, 128], zeroFill(54), [112]],\n        44100: [highPrefix, [255, 192], zeroFill(268), [55, 163, 128], zeroFill(84), [112]],\n        32000: [highPrefix, [255, 192], zeroFill(268), [55, 234], zeroFill(226), [112]],\n        24000: [highPrefix, [255, 192], zeroFill(268), [55, 255, 128], zeroFill(268), [111, 112], zeroFill(126), [224]],\n        16000: [highPrefix, [255, 192], zeroFill(268), [55, 255, 128], zeroFill(268), [111, 255], zeroFill(269), [223, 108], zeroFill(195), [1, 192]],\n        12000: [lowPrefix, zeroFill(268), [3, 127, 248], zeroFill(268), [6, 255, 240], zeroFill(268), [13, 255, 224], zeroFill(268), [27, 253, 128], zeroFill(259), [56]],\n        11025: [lowPrefix, zeroFill(268), [3, 127, 248], zeroFill(268), [6, 255, 240], zeroFill(268), [13, 255, 224], zeroFill(268), [27, 255, 192], zeroFill(268), [55, 175, 128], zeroFill(108), [112]],\n        8000: [lowPrefix, zeroFill(268), [3, 121, 16], zeroFill(47), [7]]\n      };\n      var silence = makeTable(coneOfSilence);\n      var ONE_SECOND_IN_TS = 90000,\n          // 90kHz clock\n      secondsToVideoTs,\n          secondsToAudioTs,\n          videoTsToSeconds,\n          audioTsToSeconds,\n          audioTsToVideoTs,\n          videoTsToAudioTs;\n\n      secondsToVideoTs = function secondsToVideoTs(seconds) {\n        return seconds * ONE_SECOND_IN_TS;\n      };\n\n      secondsToAudioTs = function secondsToAudioTs(seconds, sampleRate) {\n        return seconds * sampleRate;\n      };\n\n      videoTsToSeconds = function videoTsToSeconds(timestamp) {\n        return timestamp / ONE_SECOND_IN_TS;\n      };\n\n      audioTsToSeconds = function audioTsToSeconds(timestamp, sampleRate) {\n        return timestamp / sampleRate;\n      };\n\n      audioTsToVideoTs = function audioTsToVideoTs(timestamp, sampleRate) {\n        return secondsToVideoTs(audioTsToSeconds(timestamp, sampleRate));\n      };\n\n      videoTsToAudioTs = function videoTsToAudioTs(timestamp, sampleRate) {\n        return secondsToAudioTs(videoTsToSeconds(timestamp), sampleRate);\n      };\n\n      var clock = {\n        secondsToVideoTs: secondsToVideoTs,\n        secondsToAudioTs: secondsToAudioTs,\n        videoTsToSeconds: videoTsToSeconds,\n        audioTsToSeconds: audioTsToSeconds,\n        audioTsToVideoTs: audioTsToVideoTs,\n        videoTsToAudioTs: videoTsToAudioTs\n      };\n      var ONE_SECOND_IN_TS$1 = 90000; // 90kHz clock\n\n      /**\n       * Sum the `byteLength` properties of the data in each AAC frame\n       */\n\n      var sumFrameByteLengths = function sumFrameByteLengths(array) {\n        var i,\n            currentObj,\n            sum = 0; // sum the byteLength's all each nal unit in the frame\n\n        for (i = 0; i < array.length; i++) {\n          currentObj = array[i];\n          sum += currentObj.data.byteLength;\n        }\n\n        return sum;\n      }; // Possibly pad (prefix) the audio track with silence if appending this track\n      // would lead to the introduction of a gap in the audio buffer\n\n\n      var prefixWithSilence = function prefixWithSilence(track, frames, audioAppendStartTs, videoBaseMediaDecodeTime) {\n        var baseMediaDecodeTimeTs,\n            frameDuration = 0,\n            audioGapDuration = 0,\n            audioFillFrameCount = 0,\n            audioFillDuration = 0,\n            silentFrame,\n            i;\n\n        if (!frames.length) {\n          return;\n        }\n\n        baseMediaDecodeTimeTs = clock.audioTsToVideoTs(track.baseMediaDecodeTime, track.samplerate); // determine frame clock duration based on sample rate, round up to avoid overfills\n\n        frameDuration = Math.ceil(ONE_SECOND_IN_TS$1 / (track.samplerate / 1024));\n\n        if (audioAppendStartTs && videoBaseMediaDecodeTime) {\n          // insert the shortest possible amount (audio gap or audio to video gap)\n          audioGapDuration = baseMediaDecodeTimeTs - Math.max(audioAppendStartTs, videoBaseMediaDecodeTime); // number of full frames in the audio gap\n\n          audioFillFrameCount = Math.floor(audioGapDuration / frameDuration);\n          audioFillDuration = audioFillFrameCount * frameDuration;\n        } // don't attempt to fill gaps smaller than a single frame or larger\n        // than a half second\n\n\n        if (audioFillFrameCount < 1 || audioFillDuration > ONE_SECOND_IN_TS$1 / 2) {\n          return;\n        }\n\n        silentFrame = silence[track.samplerate];\n\n        if (!silentFrame) {\n          // we don't have a silent frame pregenerated for the sample rate, so use a frame\n          // from the content instead\n          silentFrame = frames[0].data;\n        }\n\n        for (i = 0; i < audioFillFrameCount; i++) {\n          frames.splice(i, 0, {\n            data: silentFrame\n          });\n        }\n\n        track.baseMediaDecodeTime -= Math.floor(clock.videoTsToAudioTs(audioFillDuration, track.samplerate));\n      }; // If the audio segment extends before the earliest allowed dts\n      // value, remove AAC frames until starts at or after the earliest\n      // allowed DTS so that we don't end up with a negative baseMedia-\n      // DecodeTime for the audio track\n\n\n      var trimAdtsFramesByEarliestDts = function trimAdtsFramesByEarliestDts(adtsFrames, track, earliestAllowedDts) {\n        if (track.minSegmentDts >= earliestAllowedDts) {\n          return adtsFrames;\n        } // We will need to recalculate the earliest segment Dts\n\n\n        track.minSegmentDts = Infinity;\n        return adtsFrames.filter(function (currentFrame) {\n          // If this is an allowed frame, keep it and record it's Dts\n          if (currentFrame.dts >= earliestAllowedDts) {\n            track.minSegmentDts = Math.min(track.minSegmentDts, currentFrame.dts);\n            track.minSegmentPts = track.minSegmentDts;\n            return true;\n          } // Otherwise, discard it\n\n\n          return false;\n        });\n      }; // generate the track's raw mdat data from an array of frames\n\n\n      var generateSampleTable$1 = function generateSampleTable(frames) {\n        var i,\n            currentFrame,\n            samples = [];\n\n        for (i = 0; i < frames.length; i++) {\n          currentFrame = frames[i];\n          samples.push({\n            size: currentFrame.data.byteLength,\n            duration: 1024 // For AAC audio, all samples contain 1024 samples\n\n          });\n        }\n\n        return samples;\n      }; // generate the track's sample table from an array of frames\n\n\n      var concatenateFrameData = function concatenateFrameData(frames) {\n        var i,\n            currentFrame,\n            dataOffset = 0,\n            data = new Uint8Array(sumFrameByteLengths(frames));\n\n        for (i = 0; i < frames.length; i++) {\n          currentFrame = frames[i];\n          data.set(currentFrame.data, dataOffset);\n          dataOffset += currentFrame.data.byteLength;\n        }\n\n        return data;\n      };\n\n      var audioFrameUtils = {\n        prefixWithSilence: prefixWithSilence,\n        trimAdtsFramesByEarliestDts: trimAdtsFramesByEarliestDts,\n        generateSampleTable: generateSampleTable$1,\n        concatenateFrameData: concatenateFrameData\n      };\n      var ONE_SECOND_IN_TS$2 = 90000; // 90kHz clock\n\n      /**\n       * Store information about the start and end of the track and the\n       * duration for each frame/sample we process in order to calculate\n       * the baseMediaDecodeTime\n       */\n\n      var collectDtsInfo = function collectDtsInfo(track, data) {\n        if (typeof data.pts === 'number') {\n          if (track.timelineStartInfo.pts === undefined) {\n            track.timelineStartInfo.pts = data.pts;\n          }\n\n          if (track.minSegmentPts === undefined) {\n            track.minSegmentPts = data.pts;\n          } else {\n            track.minSegmentPts = Math.min(track.minSegmentPts, data.pts);\n          }\n\n          if (track.maxSegmentPts === undefined) {\n            track.maxSegmentPts = data.pts;\n          } else {\n            track.maxSegmentPts = Math.max(track.maxSegmentPts, data.pts);\n          }\n        }\n\n        if (typeof data.dts === 'number') {\n          if (track.timelineStartInfo.dts === undefined) {\n            track.timelineStartInfo.dts = data.dts;\n          }\n\n          if (track.minSegmentDts === undefined) {\n            track.minSegmentDts = data.dts;\n          } else {\n            track.minSegmentDts = Math.min(track.minSegmentDts, data.dts);\n          }\n\n          if (track.maxSegmentDts === undefined) {\n            track.maxSegmentDts = data.dts;\n          } else {\n            track.maxSegmentDts = Math.max(track.maxSegmentDts, data.dts);\n          }\n        }\n      };\n      /**\n       * Clear values used to calculate the baseMediaDecodeTime between\n       * tracks\n       */\n\n\n      var clearDtsInfo = function clearDtsInfo(track) {\n        delete track.minSegmentDts;\n        delete track.maxSegmentDts;\n        delete track.minSegmentPts;\n        delete track.maxSegmentPts;\n      };\n      /**\n       * Calculate the track's baseMediaDecodeTime based on the earliest\n       * DTS the transmuxer has ever seen and the minimum DTS for the\n       * current track\n       * @param track {object} track metadata configuration\n       * @param keepOriginalTimestamps {boolean} If true, keep the timestamps\n       *        in the source; false to adjust the first segment to start at 0.\n       */\n\n\n      var calculateTrackBaseMediaDecodeTime = function calculateTrackBaseMediaDecodeTime(track, keepOriginalTimestamps) {\n        var baseMediaDecodeTime,\n            scale,\n            minSegmentDts = track.minSegmentDts; // Optionally adjust the time so the first segment starts at zero.\n\n        if (!keepOriginalTimestamps) {\n          minSegmentDts -= track.timelineStartInfo.dts;\n        } // track.timelineStartInfo.baseMediaDecodeTime is the location, in time, where\n        // we want the start of the first segment to be placed\n\n\n        baseMediaDecodeTime = track.timelineStartInfo.baseMediaDecodeTime; // Add to that the distance this segment is from the very first\n\n        baseMediaDecodeTime += minSegmentDts; // baseMediaDecodeTime must not become negative\n\n        baseMediaDecodeTime = Math.max(0, baseMediaDecodeTime);\n\n        if (track.type === 'audio') {\n          // Audio has a different clock equal to the sampling_rate so we need to\n          // scale the PTS values into the clock rate of the track\n          scale = track.samplerate / ONE_SECOND_IN_TS$2;\n          baseMediaDecodeTime *= scale;\n          baseMediaDecodeTime = Math.floor(baseMediaDecodeTime);\n        }\n\n        return baseMediaDecodeTime;\n      };\n\n      var trackDecodeInfo = {\n        clearDtsInfo: clearDtsInfo,\n        calculateTrackBaseMediaDecodeTime: calculateTrackBaseMediaDecodeTime,\n        collectDtsInfo: collectDtsInfo\n      };\n      /**\n       * mux.js\n       *\n       * Copyright (c) 2015 Brightcove\n       * All rights reserved.\n       *\n       * Reads in-band caption information from a video elementary\n       * stream. Captions must follow the CEA-708 standard for injection\n       * into an MPEG-2 transport streams.\n       * @see https://en.wikipedia.org/wiki/CEA-708\n       * @see https://www.gpo.gov/fdsys/pkg/CFR-2007-title47-vol1/pdf/CFR-2007-title47-vol1-sec15-119.pdf\n       */\n      // Supplemental enhancement information (SEI) NAL units have a\n      // payload type field to indicate how they are to be\n      // interpreted. CEAS-708 caption content is always transmitted with\n      // payload type 0x04.\n\n      var USER_DATA_REGISTERED_ITU_T_T35 = 4,\n          RBSP_TRAILING_BITS = 128;\n      /**\n        * Parse a supplemental enhancement information (SEI) NAL unit.\n        * Stops parsing once a message of type ITU T T35 has been found.\n        *\n        * @param bytes {Uint8Array} the bytes of a SEI NAL unit\n        * @return {object} the parsed SEI payload\n        * @see Rec. ITU-T H.264, 7.3.2.3.1\n        */\n\n      var parseSei = function parseSei(bytes) {\n        var i = 0,\n            result = {\n          payloadType: -1,\n          payloadSize: 0\n        },\n            payloadType = 0,\n            payloadSize = 0; // go through the sei_rbsp parsing each each individual sei_message\n\n        while (i < bytes.byteLength) {\n          // stop once we have hit the end of the sei_rbsp\n          if (bytes[i] === RBSP_TRAILING_BITS) {\n            break;\n          } // Parse payload type\n\n\n          while (bytes[i] === 0xFF) {\n            payloadType += 255;\n            i++;\n          }\n\n          payloadType += bytes[i++]; // Parse payload size\n\n          while (bytes[i] === 0xFF) {\n            payloadSize += 255;\n            i++;\n          }\n\n          payloadSize += bytes[i++]; // this sei_message is a 608/708 caption so save it and break\n          // there can only ever be one caption message in a frame's sei\n\n          if (!result.payload && payloadType === USER_DATA_REGISTERED_ITU_T_T35) {\n            result.payloadType = payloadType;\n            result.payloadSize = payloadSize;\n            result.payload = bytes.subarray(i, i + payloadSize);\n            break;\n          } // skip the payload and parse the next message\n\n\n          i += payloadSize;\n          payloadType = 0;\n          payloadSize = 0;\n        }\n\n        return result;\n      }; // see ANSI/SCTE 128-1 (2013), section 8.1\n\n\n      var parseUserData = function parseUserData(sei) {\n        // itu_t_t35_contry_code must be 181 (United States) for\n        // captions\n        if (sei.payload[0] !== 181) {\n          return null;\n        } // itu_t_t35_provider_code should be 49 (ATSC) for captions\n\n\n        if ((sei.payload[1] << 8 | sei.payload[2]) !== 49) {\n          return null;\n        } // the user_identifier should be \"GA94\" to indicate ATSC1 data\n\n\n        if (String.fromCharCode(sei.payload[3], sei.payload[4], sei.payload[5], sei.payload[6]) !== 'GA94') {\n          return null;\n        } // finally, user_data_type_code should be 0x03 for caption data\n\n\n        if (sei.payload[7] !== 0x03) {\n          return null;\n        } // return the user_data_type_structure and strip the trailing\n        // marker bits\n\n\n        return sei.payload.subarray(8, sei.payload.length - 1);\n      }; // see CEA-708-D, section 4.4\n\n\n      var parseCaptionPackets = function parseCaptionPackets(pts, userData) {\n        var results = [],\n            i,\n            count,\n            offset,\n            data; // if this is just filler, return immediately\n\n        if (!(userData[0] & 0x40)) {\n          return results;\n        } // parse out the cc_data_1 and cc_data_2 fields\n\n\n        count = userData[0] & 0x1f;\n\n        for (i = 0; i < count; i++) {\n          offset = i * 3;\n          data = {\n            type: userData[offset + 2] & 0x03,\n            pts: pts\n          }; // capture cc data when cc_valid is 1\n\n          if (userData[offset + 2] & 0x04) {\n            data.ccData = userData[offset + 3] << 8 | userData[offset + 4];\n            results.push(data);\n          }\n        }\n\n        return results;\n      };\n\n      var discardEmulationPreventionBytes = function discardEmulationPreventionBytes(data) {\n        var length = data.byteLength,\n            emulationPreventionBytesPositions = [],\n            i = 1,\n            newLength,\n            newData; // Find all `Emulation Prevention Bytes`\n\n        while (i < length - 2) {\n          if (data[i] === 0 && data[i + 1] === 0 && data[i + 2] === 0x03) {\n            emulationPreventionBytesPositions.push(i + 2);\n            i += 2;\n          } else {\n            i++;\n          }\n        } // If no Emulation Prevention Bytes were found just return the original\n        // array\n\n\n        if (emulationPreventionBytesPositions.length === 0) {\n          return data;\n        } // Create a new array to hold the NAL unit data\n\n\n        newLength = length - emulationPreventionBytesPositions.length;\n        newData = new Uint8Array(newLength);\n        var sourceIndex = 0;\n\n        for (i = 0; i < newLength; sourceIndex++, i++) {\n          if (sourceIndex === emulationPreventionBytesPositions[0]) {\n            // Skip this byte\n            sourceIndex++; // Remove this position index\n\n            emulationPreventionBytesPositions.shift();\n          }\n\n          newData[i] = data[sourceIndex];\n        }\n\n        return newData;\n      }; // exports\n\n\n      var captionPacketParser = {\n        parseSei: parseSei,\n        parseUserData: parseUserData,\n        parseCaptionPackets: parseCaptionPackets,\n        discardEmulationPreventionBytes: discardEmulationPreventionBytes,\n        USER_DATA_REGISTERED_ITU_T_T35: USER_DATA_REGISTERED_ITU_T_T35\n      }; // -----------------\n      // Link To Transport\n      // -----------------\n\n      var CaptionStream = function CaptionStream() {\n        CaptionStream.prototype.init.call(this);\n        this.captionPackets_ = [];\n        this.ccStreams_ = [new Cea608Stream(0, 0), // eslint-disable-line no-use-before-define\n        new Cea608Stream(0, 1), // eslint-disable-line no-use-before-define\n        new Cea608Stream(1, 0), // eslint-disable-line no-use-before-define\n        new Cea608Stream(1, 1) // eslint-disable-line no-use-before-define\n        ];\n        this.reset(); // forward data and done events from CCs to this CaptionStream\n\n        this.ccStreams_.forEach(function (cc) {\n          cc.on('data', this.trigger.bind(this, 'data'));\n          cc.on('done', this.trigger.bind(this, 'done'));\n        }, this);\n      };\n\n      CaptionStream.prototype = new stream();\n\n      CaptionStream.prototype.push = function (event) {\n        var sei, userData, newCaptionPackets; // only examine SEI NALs\n\n        if (event.nalUnitType !== 'sei_rbsp') {\n          return;\n        } // parse the sei\n\n\n        sei = captionPacketParser.parseSei(event.escapedRBSP); // ignore everything but user_data_registered_itu_t_t35\n\n        if (sei.payloadType !== captionPacketParser.USER_DATA_REGISTERED_ITU_T_T35) {\n          return;\n        } // parse out the user data payload\n\n\n        userData = captionPacketParser.parseUserData(sei); // ignore unrecognized userData\n\n        if (!userData) {\n          return;\n        } // Sometimes, the same segment # will be downloaded twice. To stop the\n        // caption data from being processed twice, we track the latest dts we've\n        // received and ignore everything with a dts before that. However, since\n        // data for a specific dts can be split across packets on either side of\n        // a segment boundary, we need to make sure we *don't* ignore the packets\n        // from the *next* segment that have dts === this.latestDts_. By constantly\n        // tracking the number of packets received with dts === this.latestDts_, we\n        // know how many should be ignored once we start receiving duplicates.\n\n\n        if (event.dts < this.latestDts_) {\n          // We've started getting older data, so set the flag.\n          this.ignoreNextEqualDts_ = true;\n          return;\n        } else if (event.dts === this.latestDts_ && this.ignoreNextEqualDts_) {\n          this.numSameDts_--;\n\n          if (!this.numSameDts_) {\n            // We've received the last duplicate packet, time to start processing again\n            this.ignoreNextEqualDts_ = false;\n          }\n\n          return;\n        } // parse out CC data packets and save them for later\n\n\n        newCaptionPackets = captionPacketParser.parseCaptionPackets(event.pts, userData);\n        this.captionPackets_ = this.captionPackets_.concat(newCaptionPackets);\n\n        if (this.latestDts_ !== event.dts) {\n          this.numSameDts_ = 0;\n        }\n\n        this.numSameDts_++;\n        this.latestDts_ = event.dts;\n      };\n\n      CaptionStream.prototype.flush = function () {\n        // make sure we actually parsed captions before proceeding\n        if (!this.captionPackets_.length) {\n          this.ccStreams_.forEach(function (cc) {\n            cc.flush();\n          }, this);\n          return;\n        } // In Chrome, the Array#sort function is not stable so add a\n        // presortIndex that we can use to ensure we get a stable-sort\n\n\n        this.captionPackets_.forEach(function (elem, idx) {\n          elem.presortIndex = idx;\n        }); // sort caption byte-pairs based on their PTS values\n\n        this.captionPackets_.sort(function (a, b) {\n          if (a.pts === b.pts) {\n            return a.presortIndex - b.presortIndex;\n          }\n\n          return a.pts - b.pts;\n        });\n        this.captionPackets_.forEach(function (packet) {\n          if (packet.type < 2) {\n            // Dispatch packet to the right Cea608Stream\n            this.dispatchCea608Packet(packet);\n          } // this is where an 'else' would go for a dispatching packets\n          // to a theoretical Cea708Stream that handles SERVICEn data\n\n        }, this);\n        this.captionPackets_.length = 0;\n        this.ccStreams_.forEach(function (cc) {\n          cc.flush();\n        }, this);\n        return;\n      };\n\n      CaptionStream.prototype.reset = function () {\n        this.latestDts_ = null;\n        this.ignoreNextEqualDts_ = false;\n        this.numSameDts_ = 0;\n        this.activeCea608Channel_ = [null, null];\n        this.ccStreams_.forEach(function (ccStream) {\n          ccStream.reset();\n        });\n      };\n\n      CaptionStream.prototype.dispatchCea608Packet = function (packet) {\n        // NOTE: packet.type is the CEA608 field\n        if (this.setsChannel1Active(packet)) {\n          this.activeCea608Channel_[packet.type] = 0;\n        } else if (this.setsChannel2Active(packet)) {\n          this.activeCea608Channel_[packet.type] = 1;\n        }\n\n        if (this.activeCea608Channel_[packet.type] === null) {\n          // If we haven't received anything to set the active channel, discard the\n          // data; we don't want jumbled captions\n          return;\n        }\n\n        this.ccStreams_[(packet.type << 1) + this.activeCea608Channel_[packet.type]].push(packet);\n      };\n\n      CaptionStream.prototype.setsChannel1Active = function (packet) {\n        return (packet.ccData & 0x7800) === 0x1000;\n      };\n\n      CaptionStream.prototype.setsChannel2Active = function (packet) {\n        return (packet.ccData & 0x7800) === 0x1800;\n      }; // ----------------------\n      // Session to Application\n      // ----------------------\n      // This hash maps non-ASCII, special, and extended character codes to their\n      // proper Unicode equivalent. The first keys that are only a single byte\n      // are the non-standard ASCII characters, which simply map the CEA608 byte\n      // to the standard ASCII/Unicode. The two-byte keys that follow are the CEA608\n      // character codes, but have their MSB bitmasked with 0x03 so that a lookup\n      // can be performed regardless of the field and data channel on which the\n      // character code was received.\n\n\n      var CHARACTER_TRANSLATION = {\n        0x2a: 0xe1,\n        // á\n        0x5c: 0xe9,\n        // é\n        0x5e: 0xed,\n        // í\n        0x5f: 0xf3,\n        // ó\n        0x60: 0xfa,\n        // ú\n        0x7b: 0xe7,\n        // ç\n        0x7c: 0xf7,\n        // ÷\n        0x7d: 0xd1,\n        // Ñ\n        0x7e: 0xf1,\n        // ñ\n        0x7f: 0x2588,\n        // █\n        0x0130: 0xae,\n        // ®\n        0x0131: 0xb0,\n        // °\n        0x0132: 0xbd,\n        // ½\n        0x0133: 0xbf,\n        // ¿\n        0x0134: 0x2122,\n        // ™\n        0x0135: 0xa2,\n        // ¢\n        0x0136: 0xa3,\n        // £\n        0x0137: 0x266a,\n        // ♪\n        0x0138: 0xe0,\n        // à\n        0x0139: 0xa0,\n        //\n        0x013a: 0xe8,\n        // è\n        0x013b: 0xe2,\n        // â\n        0x013c: 0xea,\n        // ê\n        0x013d: 0xee,\n        // î\n        0x013e: 0xf4,\n        // ô\n        0x013f: 0xfb,\n        // û\n        0x0220: 0xc1,\n        // Á\n        0x0221: 0xc9,\n        // É\n        0x0222: 0xd3,\n        // Ó\n        0x0223: 0xda,\n        // Ú\n        0x0224: 0xdc,\n        // Ü\n        0x0225: 0xfc,\n        // ü\n        0x0226: 0x2018,\n        // ‘\n        0x0227: 0xa1,\n        // ¡\n        0x0228: 0x2a,\n        // *\n        0x0229: 0x27,\n        // '\n        0x022a: 0x2014,\n        // —\n        0x022b: 0xa9,\n        // ©\n        0x022c: 0x2120,\n        // ℠\n        0x022d: 0x2022,\n        // •\n        0x022e: 0x201c,\n        // “\n        0x022f: 0x201d,\n        // ”\n        0x0230: 0xc0,\n        // À\n        0x0231: 0xc2,\n        // Â\n        0x0232: 0xc7,\n        // Ç\n        0x0233: 0xc8,\n        // È\n        0x0234: 0xca,\n        // Ê\n        0x0235: 0xcb,\n        // Ë\n        0x0236: 0xeb,\n        // ë\n        0x0237: 0xce,\n        // Î\n        0x0238: 0xcf,\n        // Ï\n        0x0239: 0xef,\n        // ï\n        0x023a: 0xd4,\n        // Ô\n        0x023b: 0xd9,\n        // Ù\n        0x023c: 0xf9,\n        // ù\n        0x023d: 0xdb,\n        // Û\n        0x023e: 0xab,\n        // «\n        0x023f: 0xbb,\n        // »\n        0x0320: 0xc3,\n        // Ã\n        0x0321: 0xe3,\n        // ã\n        0x0322: 0xcd,\n        // Í\n        0x0323: 0xcc,\n        // Ì\n        0x0324: 0xec,\n        // ì\n        0x0325: 0xd2,\n        // Ò\n        0x0326: 0xf2,\n        // ò\n        0x0327: 0xd5,\n        // Õ\n        0x0328: 0xf5,\n        // õ\n        0x0329: 0x7b,\n        // {\n        0x032a: 0x7d,\n        // }\n        0x032b: 0x5c,\n        // \\\n        0x032c: 0x5e,\n        // ^\n        0x032d: 0x5f,\n        // _\n        0x032e: 0x7c,\n        // |\n        0x032f: 0x7e,\n        // ~\n        0x0330: 0xc4,\n        // Ä\n        0x0331: 0xe4,\n        // ä\n        0x0332: 0xd6,\n        // Ö\n        0x0333: 0xf6,\n        // ö\n        0x0334: 0xdf,\n        // ß\n        0x0335: 0xa5,\n        // ¥\n        0x0336: 0xa4,\n        // ¤\n        0x0337: 0x2502,\n        // │\n        0x0338: 0xc5,\n        // Å\n        0x0339: 0xe5,\n        // å\n        0x033a: 0xd8,\n        // Ø\n        0x033b: 0xf8,\n        // ø\n        0x033c: 0x250c,\n        // ┌\n        0x033d: 0x2510,\n        // ┐\n        0x033e: 0x2514,\n        // └\n        0x033f: 0x2518 // ┘\n\n      };\n\n      var getCharFromCode = function getCharFromCode(code) {\n        if (code === null) {\n          return '';\n        }\n\n        code = CHARACTER_TRANSLATION[code] || code;\n        return String.fromCharCode(code);\n      }; // the index of the last row in a CEA-608 display buffer\n\n\n      var BOTTOM_ROW = 14; // This array is used for mapping PACs -> row #, since there's no way of\n      // getting it through bit logic.\n\n      var ROWS = [0x1100, 0x1120, 0x1200, 0x1220, 0x1500, 0x1520, 0x1600, 0x1620, 0x1700, 0x1720, 0x1000, 0x1300, 0x1320, 0x1400, 0x1420]; // CEA-608 captions are rendered onto a 34x15 matrix of character\n      // cells. The \"bottom\" row is the last element in the outer array.\n\n      var createDisplayBuffer = function createDisplayBuffer() {\n        var result = [],\n            i = BOTTOM_ROW + 1;\n\n        while (i--) {\n          result.push('');\n        }\n\n        return result;\n      };\n\n      var Cea608Stream = function Cea608Stream(field, dataChannel) {\n        Cea608Stream.prototype.init.call(this);\n        this.field_ = field || 0;\n        this.dataChannel_ = dataChannel || 0;\n        this.name_ = 'CC' + ((this.field_ << 1 | this.dataChannel_) + 1);\n        this.setConstants();\n        this.reset();\n\n        this.push = function (packet) {\n          var data, swap, char0, char1, text; // remove the parity bits\n\n          data = packet.ccData & 0x7f7f; // ignore duplicate control codes; the spec demands they're sent twice\n\n          if (data === this.lastControlCode_) {\n            this.lastControlCode_ = null;\n            return;\n          } // Store control codes\n\n\n          if ((data & 0xf000) === 0x1000) {\n            this.lastControlCode_ = data;\n          } else if (data !== this.PADDING_) {\n            this.lastControlCode_ = null;\n          }\n\n          char0 = data >>> 8;\n          char1 = data & 0xff;\n\n          if (data === this.PADDING_) {\n            return;\n          } else if (data === this.RESUME_CAPTION_LOADING_) {\n            this.mode_ = 'popOn';\n          } else if (data === this.END_OF_CAPTION_) {\n            // If an EOC is received while in paint-on mode, the displayed caption\n            // text should be swapped to non-displayed memory as if it was a pop-on\n            // caption. Because of that, we should explicitly switch back to pop-on\n            // mode\n            this.mode_ = 'popOn';\n            this.clearFormatting(packet.pts); // if a caption was being displayed, it's gone now\n\n            this.flushDisplayed(packet.pts); // flip memory\n\n            swap = this.displayed_;\n            this.displayed_ = this.nonDisplayed_;\n            this.nonDisplayed_ = swap; // start measuring the time to display the caption\n\n            this.startPts_ = packet.pts;\n          } else if (data === this.ROLL_UP_2_ROWS_) {\n            this.rollUpRows_ = 2;\n            this.setRollUp(packet.pts);\n          } else if (data === this.ROLL_UP_3_ROWS_) {\n            this.rollUpRows_ = 3;\n            this.setRollUp(packet.pts);\n          } else if (data === this.ROLL_UP_4_ROWS_) {\n            this.rollUpRows_ = 4;\n            this.setRollUp(packet.pts);\n          } else if (data === this.CARRIAGE_RETURN_) {\n            this.clearFormatting(packet.pts);\n            this.flushDisplayed(packet.pts);\n            this.shiftRowsUp_();\n            this.startPts_ = packet.pts;\n          } else if (data === this.BACKSPACE_) {\n            if (this.mode_ === 'popOn') {\n              this.nonDisplayed_[this.row_] = this.nonDisplayed_[this.row_].slice(0, -1);\n            } else {\n              this.displayed_[this.row_] = this.displayed_[this.row_].slice(0, -1);\n            }\n          } else if (data === this.ERASE_DISPLAYED_MEMORY_) {\n            this.flushDisplayed(packet.pts);\n            this.displayed_ = createDisplayBuffer();\n          } else if (data === this.ERASE_NON_DISPLAYED_MEMORY_) {\n            this.nonDisplayed_ = createDisplayBuffer();\n          } else if (data === this.RESUME_DIRECT_CAPTIONING_) {\n            if (this.mode_ !== 'paintOn') {\n              // NOTE: This should be removed when proper caption positioning is\n              // implemented\n              this.flushDisplayed(packet.pts);\n              this.displayed_ = createDisplayBuffer();\n            }\n\n            this.mode_ = 'paintOn';\n            this.startPts_ = packet.pts; // Append special characters to caption text\n          } else if (this.isSpecialCharacter(char0, char1)) {\n            // Bitmask char0 so that we can apply character transformations\n            // regardless of field and data channel.\n            // Then byte-shift to the left and OR with char1 so we can pass the\n            // entire character code to `getCharFromCode`.\n            char0 = (char0 & 0x03) << 8;\n            text = getCharFromCode(char0 | char1);\n            this[this.mode_](packet.pts, text);\n            this.column_++; // Append extended characters to caption text\n          } else if (this.isExtCharacter(char0, char1)) {\n            // Extended characters always follow their \"non-extended\" equivalents.\n            // IE if a \"è\" is desired, you'll always receive \"eè\"; non-compliant\n            // decoders are supposed to drop the \"è\", while compliant decoders\n            // backspace the \"e\" and insert \"è\".\n            // Delete the previous character\n            if (this.mode_ === 'popOn') {\n              this.nonDisplayed_[this.row_] = this.nonDisplayed_[this.row_].slice(0, -1);\n            } else {\n              this.displayed_[this.row_] = this.displayed_[this.row_].slice(0, -1);\n            } // Bitmask char0 so that we can apply character transformations\n            // regardless of field and data channel.\n            // Then byte-shift to the left and OR with char1 so we can pass the\n            // entire character code to `getCharFromCode`.\n\n\n            char0 = (char0 & 0x03) << 8;\n            text = getCharFromCode(char0 | char1);\n            this[this.mode_](packet.pts, text);\n            this.column_++; // Process mid-row codes\n          } else if (this.isMidRowCode(char0, char1)) {\n            // Attributes are not additive, so clear all formatting\n            this.clearFormatting(packet.pts); // According to the standard, mid-row codes\n            // should be replaced with spaces, so add one now\n\n            this[this.mode_](packet.pts, ' ');\n            this.column_++;\n\n            if ((char1 & 0xe) === 0xe) {\n              this.addFormatting(packet.pts, ['i']);\n            }\n\n            if ((char1 & 0x1) === 0x1) {\n              this.addFormatting(packet.pts, ['u']);\n            } // Detect offset control codes and adjust cursor\n\n          } else if (this.isOffsetControlCode(char0, char1)) {\n            // Cursor position is set by indent PAC (see below) in 4-column\n            // increments, with an additional offset code of 1-3 to reach any\n            // of the 32 columns specified by CEA-608. So all we need to do\n            // here is increment the column cursor by the given offset.\n            this.column_ += char1 & 0x03; // Detect PACs (Preamble Address Codes)\n          } else if (this.isPAC(char0, char1)) {\n            // There's no logic for PAC -> row mapping, so we have to just\n            // find the row code in an array and use its index :(\n            var row = ROWS.indexOf(data & 0x1f20); // Configure the caption window if we're in roll-up mode\n\n            if (this.mode_ === 'rollUp') {\n              // This implies that the base row is incorrectly set.\n              // As per the recommendation in CEA-608(Base Row Implementation), defer to the number\n              // of roll-up rows set.\n              if (row - this.rollUpRows_ + 1 < 0) {\n                row = this.rollUpRows_ - 1;\n              }\n\n              this.setRollUp(packet.pts, row);\n            }\n\n            if (row !== this.row_) {\n              // formatting is only persistent for current row\n              this.clearFormatting(packet.pts);\n              this.row_ = row;\n            } // All PACs can apply underline, so detect and apply\n            // (All odd-numbered second bytes set underline)\n\n\n            if (char1 & 0x1 && this.formatting_.indexOf('u') === -1) {\n              this.addFormatting(packet.pts, ['u']);\n            }\n\n            if ((data & 0x10) === 0x10) {\n              // We've got an indent level code. Each successive even number\n              // increments the column cursor by 4, so we can get the desired\n              // column position by bit-shifting to the right (to get n/2)\n              // and multiplying by 4.\n              this.column_ = ((data & 0xe) >> 1) * 4;\n            }\n\n            if (this.isColorPAC(char1)) {\n              // it's a color code, though we only support white, which\n              // can be either normal or italicized. white italics can be\n              // either 0x4e or 0x6e depending on the row, so we just\n              // bitwise-and with 0xe to see if italics should be turned on\n              if ((char1 & 0xe) === 0xe) {\n                this.addFormatting(packet.pts, ['i']);\n              }\n            } // We have a normal character in char0, and possibly one in char1\n\n          } else if (this.isNormalChar(char0)) {\n            if (char1 === 0x00) {\n              char1 = null;\n            }\n\n            text = getCharFromCode(char0);\n            text += getCharFromCode(char1);\n            this[this.mode_](packet.pts, text);\n            this.column_ += text.length;\n          } // finish data processing\n\n        };\n      };\n\n      Cea608Stream.prototype = new stream(); // Trigger a cue point that captures the current state of the\n      // display buffer\n\n      Cea608Stream.prototype.flushDisplayed = function (pts) {\n        var content = this.displayed_ // remove spaces from the start and end of the string\n        .map(function (row) {\n          try {\n            return row.trim();\n          } catch (e) {\n            // Ordinarily, this shouldn't happen. However, caption\n            // parsing errors should not throw exceptions and\n            // break playback.\n            // eslint-disable-next-line no-console\n            console.error('Skipping malformed caption.');\n            return '';\n          }\n        }) // combine all text rows to display in one cue\n        .join('\\n') // and remove blank rows from the start and end, but not the middle\n        .replace(/^\\n+|\\n+$/g, '');\n\n        if (content.length) {\n          this.trigger('data', {\n            startPts: this.startPts_,\n            endPts: pts,\n            text: content,\n            stream: this.name_\n          });\n        }\n      };\n      /**\n       * Zero out the data, used for startup and on seek\n       */\n\n\n      Cea608Stream.prototype.reset = function () {\n        this.mode_ = 'popOn'; // When in roll-up mode, the index of the last row that will\n        // actually display captions. If a caption is shifted to a row\n        // with a lower index than this, it is cleared from the display\n        // buffer\n\n        this.topRow_ = 0;\n        this.startPts_ = 0;\n        this.displayed_ = createDisplayBuffer();\n        this.nonDisplayed_ = createDisplayBuffer();\n        this.lastControlCode_ = null; // Track row and column for proper line-breaking and spacing\n\n        this.column_ = 0;\n        this.row_ = BOTTOM_ROW;\n        this.rollUpRows_ = 2; // This variable holds currently-applied formatting\n\n        this.formatting_ = [];\n      };\n      /**\n       * Sets up control code and related constants for this instance\n       */\n\n\n      Cea608Stream.prototype.setConstants = function () {\n        // The following attributes have these uses:\n        // ext_ :    char0 for mid-row codes, and the base for extended\n        //           chars (ext_+0, ext_+1, and ext_+2 are char0s for\n        //           extended codes)\n        // control_: char0 for control codes, except byte-shifted to the\n        //           left so that we can do this.control_ | CONTROL_CODE\n        // offset_:  char0 for tab offset codes\n        //\n        // It's also worth noting that control codes, and _only_ control codes,\n        // differ between field 1 and field2. Field 2 control codes are always\n        // their field 1 value plus 1. That's why there's the \"| field\" on the\n        // control value.\n        if (this.dataChannel_ === 0) {\n          this.BASE_ = 0x10;\n          this.EXT_ = 0x11;\n          this.CONTROL_ = (0x14 | this.field_) << 8;\n          this.OFFSET_ = 0x17;\n        } else if (this.dataChannel_ === 1) {\n          this.BASE_ = 0x18;\n          this.EXT_ = 0x19;\n          this.CONTROL_ = (0x1c | this.field_) << 8;\n          this.OFFSET_ = 0x1f;\n        } // Constants for the LSByte command codes recognized by Cea608Stream. This\n        // list is not exhaustive. For a more comprehensive listing and semantics see\n        // http://www.gpo.gov/fdsys/pkg/CFR-2010-title47-vol1/pdf/CFR-2010-title47-vol1-sec15-119.pdf\n        // Padding\n\n\n        this.PADDING_ = 0x0000; // Pop-on Mode\n\n        this.RESUME_CAPTION_LOADING_ = this.CONTROL_ | 0x20;\n        this.END_OF_CAPTION_ = this.CONTROL_ | 0x2f; // Roll-up Mode\n\n        this.ROLL_UP_2_ROWS_ = this.CONTROL_ | 0x25;\n        this.ROLL_UP_3_ROWS_ = this.CONTROL_ | 0x26;\n        this.ROLL_UP_4_ROWS_ = this.CONTROL_ | 0x27;\n        this.CARRIAGE_RETURN_ = this.CONTROL_ | 0x2d; // paint-on mode\n\n        this.RESUME_DIRECT_CAPTIONING_ = this.CONTROL_ | 0x29; // Erasure\n\n        this.BACKSPACE_ = this.CONTROL_ | 0x21;\n        this.ERASE_DISPLAYED_MEMORY_ = this.CONTROL_ | 0x2c;\n        this.ERASE_NON_DISPLAYED_MEMORY_ = this.CONTROL_ | 0x2e;\n      };\n      /**\n       * Detects if the 2-byte packet data is a special character\n       *\n       * Special characters have a second byte in the range 0x30 to 0x3f,\n       * with the first byte being 0x11 (for data channel 1) or 0x19 (for\n       * data channel 2).\n       *\n       * @param  {Integer} char0 The first byte\n       * @param  {Integer} char1 The second byte\n       * @return {Boolean}       Whether the 2 bytes are an special character\n       */\n\n\n      Cea608Stream.prototype.isSpecialCharacter = function (char0, char1) {\n        return char0 === this.EXT_ && char1 >= 0x30 && char1 <= 0x3f;\n      };\n      /**\n       * Detects if the 2-byte packet data is an extended character\n       *\n       * Extended characters have a second byte in the range 0x20 to 0x3f,\n       * with the first byte being 0x12 or 0x13 (for data channel 1) or\n       * 0x1a or 0x1b (for data channel 2).\n       *\n       * @param  {Integer} char0 The first byte\n       * @param  {Integer} char1 The second byte\n       * @return {Boolean}       Whether the 2 bytes are an extended character\n       */\n\n\n      Cea608Stream.prototype.isExtCharacter = function (char0, char1) {\n        return (char0 === this.EXT_ + 1 || char0 === this.EXT_ + 2) && char1 >= 0x20 && char1 <= 0x3f;\n      };\n      /**\n       * Detects if the 2-byte packet is a mid-row code\n       *\n       * Mid-row codes have a second byte in the range 0x20 to 0x2f, with\n       * the first byte being 0x11 (for data channel 1) or 0x19 (for data\n       * channel 2).\n       *\n       * @param  {Integer} char0 The first byte\n       * @param  {Integer} char1 The second byte\n       * @return {Boolean}       Whether the 2 bytes are a mid-row code\n       */\n\n\n      Cea608Stream.prototype.isMidRowCode = function (char0, char1) {\n        return char0 === this.EXT_ && char1 >= 0x20 && char1 <= 0x2f;\n      };\n      /**\n       * Detects if the 2-byte packet is an offset control code\n       *\n       * Offset control codes have a second byte in the range 0x21 to 0x23,\n       * with the first byte being 0x17 (for data channel 1) or 0x1f (for\n       * data channel 2).\n       *\n       * @param  {Integer} char0 The first byte\n       * @param  {Integer} char1 The second byte\n       * @return {Boolean}       Whether the 2 bytes are an offset control code\n       */\n\n\n      Cea608Stream.prototype.isOffsetControlCode = function (char0, char1) {\n        return char0 === this.OFFSET_ && char1 >= 0x21 && char1 <= 0x23;\n      };\n      /**\n       * Detects if the 2-byte packet is a Preamble Address Code\n       *\n       * PACs have a first byte in the range 0x10 to 0x17 (for data channel 1)\n       * or 0x18 to 0x1f (for data channel 2), with the second byte in the\n       * range 0x40 to 0x7f.\n       *\n       * @param  {Integer} char0 The first byte\n       * @param  {Integer} char1 The second byte\n       * @return {Boolean}       Whether the 2 bytes are a PAC\n       */\n\n\n      Cea608Stream.prototype.isPAC = function (char0, char1) {\n        return char0 >= this.BASE_ && char0 < this.BASE_ + 8 && char1 >= 0x40 && char1 <= 0x7f;\n      };\n      /**\n       * Detects if a packet's second byte is in the range of a PAC color code\n       *\n       * PAC color codes have the second byte be in the range 0x40 to 0x4f, or\n       * 0x60 to 0x6f.\n       *\n       * @param  {Integer} char1 The second byte\n       * @return {Boolean}       Whether the byte is a color PAC\n       */\n\n\n      Cea608Stream.prototype.isColorPAC = function (char1) {\n        return char1 >= 0x40 && char1 <= 0x4f || char1 >= 0x60 && char1 <= 0x7f;\n      };\n      /**\n       * Detects if a single byte is in the range of a normal character\n       *\n       * Normal text bytes are in the range 0x20 to 0x7f.\n       *\n       * @param  {Integer} char  The byte\n       * @return {Boolean}       Whether the byte is a normal character\n       */\n\n\n      Cea608Stream.prototype.isNormalChar = function (char) {\n        return char >= 0x20 && char <= 0x7f;\n      };\n      /**\n       * Configures roll-up\n       *\n       * @param  {Integer} pts         Current PTS\n       * @param  {Integer} newBaseRow  Used by PACs to slide the current window to\n       *                               a new position\n       */\n\n\n      Cea608Stream.prototype.setRollUp = function (pts, newBaseRow) {\n        // Reset the base row to the bottom row when switching modes\n        if (this.mode_ !== 'rollUp') {\n          this.row_ = BOTTOM_ROW;\n          this.mode_ = 'rollUp'; // Spec says to wipe memories when switching to roll-up\n\n          this.flushDisplayed(pts);\n          this.nonDisplayed_ = createDisplayBuffer();\n          this.displayed_ = createDisplayBuffer();\n        }\n\n        if (newBaseRow !== undefined && newBaseRow !== this.row_) {\n          // move currently displayed captions (up or down) to the new base row\n          for (var i = 0; i < this.rollUpRows_; i++) {\n            this.displayed_[newBaseRow - i] = this.displayed_[this.row_ - i];\n            this.displayed_[this.row_ - i] = '';\n          }\n        }\n\n        if (newBaseRow === undefined) {\n          newBaseRow = this.row_;\n        }\n\n        this.topRow_ = newBaseRow - this.rollUpRows_ + 1;\n      }; // Adds the opening HTML tag for the passed character to the caption text,\n      // and keeps track of it for later closing\n\n\n      Cea608Stream.prototype.addFormatting = function (pts, format) {\n        this.formatting_ = this.formatting_.concat(format);\n        var text = format.reduce(function (text, format) {\n          return text + '<' + format + '>';\n        }, '');\n        this[this.mode_](pts, text);\n      }; // Adds HTML closing tags for current formatting to caption text and\n      // clears remembered formatting\n\n\n      Cea608Stream.prototype.clearFormatting = function (pts) {\n        if (!this.formatting_.length) {\n          return;\n        }\n\n        var text = this.formatting_.reverse().reduce(function (text, format) {\n          return text + '</' + format + '>';\n        }, '');\n        this.formatting_ = [];\n        this[this.mode_](pts, text);\n      }; // Mode Implementations\n\n\n      Cea608Stream.prototype.popOn = function (pts, text) {\n        var baseRow = this.nonDisplayed_[this.row_]; // buffer characters\n\n        baseRow += text;\n        this.nonDisplayed_[this.row_] = baseRow;\n      };\n\n      Cea608Stream.prototype.rollUp = function (pts, text) {\n        var baseRow = this.displayed_[this.row_];\n        baseRow += text;\n        this.displayed_[this.row_] = baseRow;\n      };\n\n      Cea608Stream.prototype.shiftRowsUp_ = function () {\n        var i; // clear out inactive rows\n\n        for (i = 0; i < this.topRow_; i++) {\n          this.displayed_[i] = '';\n        }\n\n        for (i = this.row_ + 1; i < BOTTOM_ROW + 1; i++) {\n          this.displayed_[i] = '';\n        } // shift displayed rows up\n\n\n        for (i = this.topRow_; i < this.row_; i++) {\n          this.displayed_[i] = this.displayed_[i + 1];\n        } // clear out the bottom row\n\n\n        this.displayed_[this.row_] = '';\n      };\n\n      Cea608Stream.prototype.paintOn = function (pts, text) {\n        var baseRow = this.displayed_[this.row_];\n        baseRow += text;\n        this.displayed_[this.row_] = baseRow;\n      }; // exports\n\n\n      var captionStream = {\n        CaptionStream: CaptionStream,\n        Cea608Stream: Cea608Stream\n      };\n      var streamTypes = {\n        H264_STREAM_TYPE: 0x1B,\n        ADTS_STREAM_TYPE: 0x0F,\n        METADATA_STREAM_TYPE: 0x15\n      };\n      var MAX_TS = 8589934592;\n      var RO_THRESH = 4294967296;\n\n      var handleRollover = function handleRollover(value, reference) {\n        var direction = 1;\n\n        if (value > reference) {\n          // If the current timestamp value is greater than our reference timestamp and we detect a\n          // timestamp rollover, this means the roll over is happening in the opposite direction.\n          // Example scenario: Enter a long stream/video just after a rollover occurred. The reference\n          // point will be set to a small number, e.g. 1. The user then seeks backwards over the\n          // rollover point. In loading this segment, the timestamp values will be very large,\n          // e.g. 2^33 - 1. Since this comes before the data we loaded previously, we want to adjust\n          // the time stamp to be `value - 2^33`.\n          direction = -1;\n        } // Note: A seek forwards or back that is greater than the RO_THRESH (2^32, ~13 hours) will\n        // cause an incorrect adjustment.\n\n\n        while (Math.abs(reference - value) > RO_THRESH) {\n          value += direction * MAX_TS;\n        }\n\n        return value;\n      };\n\n      var TimestampRolloverStream = function TimestampRolloverStream(type) {\n        var lastDTS, referenceDTS;\n        TimestampRolloverStream.prototype.init.call(this);\n        this.type_ = type;\n\n        this.push = function (data) {\n          if (data.type !== this.type_) {\n            return;\n          }\n\n          if (referenceDTS === undefined) {\n            referenceDTS = data.dts;\n          }\n\n          data.dts = handleRollover(data.dts, referenceDTS);\n          data.pts = handleRollover(data.pts, referenceDTS);\n          lastDTS = data.dts;\n          this.trigger('data', data);\n        };\n\n        this.flush = function () {\n          referenceDTS = lastDTS;\n          this.trigger('done');\n        };\n\n        this.discontinuity = function () {\n          referenceDTS = void 0;\n          lastDTS = void 0;\n        };\n      };\n\n      TimestampRolloverStream.prototype = new stream();\n      var timestampRolloverStream = {\n        TimestampRolloverStream: TimestampRolloverStream,\n        handleRollover: handleRollover\n      };\n\n      var percentEncode = function percentEncode(bytes, start, end) {\n        var i,\n            result = '';\n\n        for (i = start; i < end; i++) {\n          result += '%' + ('00' + bytes[i].toString(16)).slice(-2);\n        }\n\n        return result;\n      },\n          // return the string representation of the specified byte range,\n      // interpreted as UTf-8.\n      parseUtf8 = function parseUtf8(bytes, start, end) {\n        return decodeURIComponent(percentEncode(bytes, start, end));\n      },\n          // return the string representation of the specified byte range,\n      // interpreted as ISO-8859-1.\n      parseIso88591 = function parseIso88591(bytes, start, end) {\n        return unescape(percentEncode(bytes, start, end)); // jshint ignore:line\n      },\n          parseSyncSafeInteger = function parseSyncSafeInteger(data) {\n        return data[0] << 21 | data[1] << 14 | data[2] << 7 | data[3];\n      },\n          tagParsers = {\n        TXXX: function TXXX(tag) {\n          var i;\n\n          if (tag.data[0] !== 3) {\n            // ignore frames with unrecognized character encodings\n            return;\n          }\n\n          for (i = 1; i < tag.data.length; i++) {\n            if (tag.data[i] === 0) {\n              // parse the text fields\n              tag.description = parseUtf8(tag.data, 1, i); // do not include the null terminator in the tag value\n\n              tag.value = parseUtf8(tag.data, i + 1, tag.data.length).replace(/\\0*$/, '');\n              break;\n            }\n          }\n\n          tag.data = tag.value;\n        },\n        WXXX: function WXXX(tag) {\n          var i;\n\n          if (tag.data[0] !== 3) {\n            // ignore frames with unrecognized character encodings\n            return;\n          }\n\n          for (i = 1; i < tag.data.length; i++) {\n            if (tag.data[i] === 0) {\n              // parse the description and URL fields\n              tag.description = parseUtf8(tag.data, 1, i);\n              tag.url = parseUtf8(tag.data, i + 1, tag.data.length);\n              break;\n            }\n          }\n        },\n        PRIV: function PRIV(tag) {\n          var i;\n\n          for (i = 0; i < tag.data.length; i++) {\n            if (tag.data[i] === 0) {\n              // parse the description and URL fields\n              tag.owner = parseIso88591(tag.data, 0, i);\n              break;\n            }\n          }\n\n          tag.privateData = tag.data.subarray(i + 1);\n          tag.data = tag.privateData;\n        }\n      },\n          _MetadataStream;\n\n      _MetadataStream = function MetadataStream(options) {\n        var settings = {\n          debug: !!(options && options.debug),\n          // the bytes of the program-level descriptor field in MP2T\n          // see ISO/IEC 13818-1:2013 (E), section 2.6 \"Program and\n          // program element descriptors\"\n          descriptor: options && options.descriptor\n        },\n            // the total size in bytes of the ID3 tag being parsed\n        tagSize = 0,\n            // tag data that is not complete enough to be parsed\n        buffer = [],\n            // the total number of bytes currently in the buffer\n        bufferSize = 0,\n            i;\n\n        _MetadataStream.prototype.init.call(this); // calculate the text track in-band metadata track dispatch type\n        // https://html.spec.whatwg.org/multipage/embedded-content.html#steps-to-expose-a-media-resource-specific-text-track\n\n\n        this.dispatchType = streamTypes.METADATA_STREAM_TYPE.toString(16);\n\n        if (settings.descriptor) {\n          for (i = 0; i < settings.descriptor.length; i++) {\n            this.dispatchType += ('00' + settings.descriptor[i].toString(16)).slice(-2);\n          }\n        }\n\n        this.push = function (chunk) {\n          var tag, frameStart, frameSize, frame, i, frameHeader;\n\n          if (chunk.type !== 'timed-metadata') {\n            return;\n          } // if data_alignment_indicator is set in the PES header,\n          // we must have the start of a new ID3 tag. Assume anything\n          // remaining in the buffer was malformed and throw it out\n\n\n          if (chunk.dataAlignmentIndicator) {\n            bufferSize = 0;\n            buffer.length = 0;\n          } // ignore events that don't look like ID3 data\n\n\n          if (buffer.length === 0 && (chunk.data.length < 10 || chunk.data[0] !== 'I'.charCodeAt(0) || chunk.data[1] !== 'D'.charCodeAt(0) || chunk.data[2] !== '3'.charCodeAt(0))) {\n            if (settings.debug) {\n              // eslint-disable-next-line no-console\n              console.log('Skipping unrecognized metadata packet');\n            }\n\n            return;\n          } // add this chunk to the data we've collected so far\n\n\n          buffer.push(chunk);\n          bufferSize += chunk.data.byteLength; // grab the size of the entire frame from the ID3 header\n\n          if (buffer.length === 1) {\n            // the frame size is transmitted as a 28-bit integer in the\n            // last four bytes of the ID3 header.\n            // The most significant bit of each byte is dropped and the\n            // results concatenated to recover the actual value.\n            tagSize = parseSyncSafeInteger(chunk.data.subarray(6, 10)); // ID3 reports the tag size excluding the header but it's more\n            // convenient for our comparisons to include it\n\n            tagSize += 10;\n          } // if the entire frame has not arrived, wait for more data\n\n\n          if (bufferSize < tagSize) {\n            return;\n          } // collect the entire frame so it can be parsed\n\n\n          tag = {\n            data: new Uint8Array(tagSize),\n            frames: [],\n            pts: buffer[0].pts,\n            dts: buffer[0].dts\n          };\n\n          for (i = 0; i < tagSize;) {\n            tag.data.set(buffer[0].data.subarray(0, tagSize - i), i);\n            i += buffer[0].data.byteLength;\n            bufferSize -= buffer[0].data.byteLength;\n            buffer.shift();\n          } // find the start of the first frame and the end of the tag\n\n\n          frameStart = 10;\n\n          if (tag.data[5] & 0x40) {\n            // advance the frame start past the extended header\n            frameStart += 4; // header size field\n\n            frameStart += parseSyncSafeInteger(tag.data.subarray(10, 14)); // clip any padding off the end\n\n            tagSize -= parseSyncSafeInteger(tag.data.subarray(16, 20));\n          } // parse one or more ID3 frames\n          // http://id3.org/id3v2.3.0#ID3v2_frame_overview\n\n\n          do {\n            // determine the number of bytes in this frame\n            frameSize = parseSyncSafeInteger(tag.data.subarray(frameStart + 4, frameStart + 8));\n\n            if (frameSize < 1) {\n              // eslint-disable-next-line no-console\n              return console.log('Malformed ID3 frame encountered. Skipping metadata parsing.');\n            }\n\n            frameHeader = String.fromCharCode(tag.data[frameStart], tag.data[frameStart + 1], tag.data[frameStart + 2], tag.data[frameStart + 3]);\n            frame = {\n              id: frameHeader,\n              data: tag.data.subarray(frameStart + 10, frameStart + frameSize + 10)\n            };\n            frame.key = frame.id;\n\n            if (tagParsers[frame.id]) {\n              tagParsers[frame.id](frame); // handle the special PRIV frame used to indicate the start\n              // time for raw AAC data\n\n              if (frame.owner === 'com.apple.streaming.transportStreamTimestamp') {\n                var d = frame.data,\n                    size = (d[3] & 0x01) << 30 | d[4] << 22 | d[5] << 14 | d[6] << 6 | d[7] >>> 2;\n                size *= 4;\n                size += d[7] & 0x03;\n                frame.timeStamp = size; // in raw AAC, all subsequent data will be timestamped based\n                // on the value of this frame\n                // we couldn't have known the appropriate pts and dts before\n                // parsing this ID3 tag so set those values now\n\n                if (tag.pts === undefined && tag.dts === undefined) {\n                  tag.pts = frame.timeStamp;\n                  tag.dts = frame.timeStamp;\n                }\n\n                this.trigger('timestamp', frame);\n              }\n            }\n\n            tag.frames.push(frame);\n            frameStart += 10; // advance past the frame header\n\n            frameStart += frameSize; // advance past the frame body\n          } while (frameStart < tagSize);\n\n          this.trigger('data', tag);\n        };\n      };\n\n      _MetadataStream.prototype = new stream();\n      var metadataStream = _MetadataStream;\n      var TimestampRolloverStream$1 = timestampRolloverStream.TimestampRolloverStream; // object types\n\n      var _TransportPacketStream, _TransportParseStream, _ElementaryStream; // constants\n\n\n      var MP2T_PACKET_LENGTH = 188,\n          // bytes\n      SYNC_BYTE = 0x47;\n      /**\n       * Splits an incoming stream of binary data into MPEG-2 Transport\n       * Stream packets.\n       */\n\n      _TransportPacketStream = function TransportPacketStream() {\n        var buffer = new Uint8Array(MP2T_PACKET_LENGTH),\n            bytesInBuffer = 0;\n\n        _TransportPacketStream.prototype.init.call(this); // Deliver new bytes to the stream.\n\n        /**\n         * Split a stream of data into M2TS packets\n        **/\n\n\n        this.push = function (bytes) {\n          var startIndex = 0,\n              endIndex = MP2T_PACKET_LENGTH,\n              everything; // If there are bytes remaining from the last segment, prepend them to the\n          // bytes that were pushed in\n\n          if (bytesInBuffer) {\n            everything = new Uint8Array(bytes.byteLength + bytesInBuffer);\n            everything.set(buffer.subarray(0, bytesInBuffer));\n            everything.set(bytes, bytesInBuffer);\n            bytesInBuffer = 0;\n          } else {\n            everything = bytes;\n          } // While we have enough data for a packet\n\n\n          while (endIndex < everything.byteLength) {\n            // Look for a pair of start and end sync bytes in the data..\n            if (everything[startIndex] === SYNC_BYTE && everything[endIndex] === SYNC_BYTE) {\n              // We found a packet so emit it and jump one whole packet forward in\n              // the stream\n              this.trigger('data', everything.subarray(startIndex, endIndex));\n              startIndex += MP2T_PACKET_LENGTH;\n              endIndex += MP2T_PACKET_LENGTH;\n              continue;\n            } // If we get here, we have somehow become de-synchronized and we need to step\n            // forward one byte at a time until we find a pair of sync bytes that denote\n            // a packet\n\n\n            startIndex++;\n            endIndex++;\n          } // If there was some data left over at the end of the segment that couldn't\n          // possibly be a whole packet, keep it because it might be the start of a packet\n          // that continues in the next segment\n\n\n          if (startIndex < everything.byteLength) {\n            buffer.set(everything.subarray(startIndex), 0);\n            bytesInBuffer = everything.byteLength - startIndex;\n          }\n        };\n        /**\n         * Passes identified M2TS packets to the TransportParseStream to be parsed\n        **/\n\n\n        this.flush = function () {\n          // If the buffer contains a whole packet when we are being flushed, emit it\n          // and empty the buffer. Otherwise hold onto the data because it may be\n          // important for decoding the next segment\n          if (bytesInBuffer === MP2T_PACKET_LENGTH && buffer[0] === SYNC_BYTE) {\n            this.trigger('data', buffer);\n            bytesInBuffer = 0;\n          }\n\n          this.trigger('done');\n        };\n      };\n\n      _TransportPacketStream.prototype = new stream();\n      /**\n       * Accepts an MP2T TransportPacketStream and emits data events with parsed\n       * forms of the individual transport stream packets.\n       */\n\n      _TransportParseStream = function TransportParseStream() {\n        var parsePsi, parsePat, parsePmt, self;\n\n        _TransportParseStream.prototype.init.call(this);\n\n        self = this;\n        this.packetsWaitingForPmt = [];\n        this.programMapTable = undefined;\n\n        parsePsi = function parsePsi(payload, psi) {\n          var offset = 0; // PSI packets may be split into multiple sections and those\n          // sections may be split into multiple packets. If a PSI\n          // section starts in this packet, the payload_unit_start_indicator\n          // will be true and the first byte of the payload will indicate\n          // the offset from the current position to the start of the\n          // section.\n\n          if (psi.payloadUnitStartIndicator) {\n            offset += payload[offset] + 1;\n          }\n\n          if (psi.type === 'pat') {\n            parsePat(payload.subarray(offset), psi);\n          } else {\n            parsePmt(payload.subarray(offset), psi);\n          }\n        };\n\n        parsePat = function parsePat(payload, pat) {\n          pat.section_number = payload[7]; // eslint-disable-line camelcase\n\n          pat.last_section_number = payload[8]; // eslint-disable-line camelcase\n          // skip the PSI header and parse the first PMT entry\n\n          self.pmtPid = (payload[10] & 0x1F) << 8 | payload[11];\n          pat.pmtPid = self.pmtPid;\n        };\n        /**\n         * Parse out the relevant fields of a Program Map Table (PMT).\n         * @param payload {Uint8Array} the PMT-specific portion of an MP2T\n         * packet. The first byte in this array should be the table_id\n         * field.\n         * @param pmt {object} the object that should be decorated with\n         * fields parsed from the PMT.\n         */\n\n\n        parsePmt = function parsePmt(payload, pmt) {\n          var sectionLength, tableEnd, programInfoLength, offset; // PMTs can be sent ahead of the time when they should actually\n          // take effect. We don't believe this should ever be the case\n          // for HLS but we'll ignore \"forward\" PMT declarations if we see\n          // them. Future PMT declarations have the current_next_indicator\n          // set to zero.\n\n          if (!(payload[5] & 0x01)) {\n            return;\n          } // overwrite any existing program map table\n\n\n          self.programMapTable = {\n            video: null,\n            audio: null,\n            'timed-metadata': {}\n          }; // the mapping table ends at the end of the current section\n\n          sectionLength = (payload[1] & 0x0f) << 8 | payload[2];\n          tableEnd = 3 + sectionLength - 4; // to determine where the table is, we have to figure out how\n          // long the program info descriptors are\n\n          programInfoLength = (payload[10] & 0x0f) << 8 | payload[11]; // advance the offset to the first entry in the mapping table\n\n          offset = 12 + programInfoLength;\n\n          while (offset < tableEnd) {\n            var streamType = payload[offset];\n            var pid = (payload[offset + 1] & 0x1F) << 8 | payload[offset + 2]; // only map a single elementary_pid for audio and video stream types\n            // TODO: should this be done for metadata too? for now maintain behavior of\n            //       multiple metadata streams\n\n            if (streamType === streamTypes.H264_STREAM_TYPE && self.programMapTable.video === null) {\n              self.programMapTable.video = pid;\n            } else if (streamType === streamTypes.ADTS_STREAM_TYPE && self.programMapTable.audio === null) {\n              self.programMapTable.audio = pid;\n            } else if (streamType === streamTypes.METADATA_STREAM_TYPE) {\n              // map pid to stream type for metadata streams\n              self.programMapTable['timed-metadata'][pid] = streamType;\n            } // move to the next table entry\n            // skip past the elementary stream descriptors, if present\n\n\n            offset += ((payload[offset + 3] & 0x0F) << 8 | payload[offset + 4]) + 5;\n          } // record the map on the packet as well\n\n\n          pmt.programMapTable = self.programMapTable;\n        };\n        /**\n         * Deliver a new MP2T packet to the next stream in the pipeline.\n         */\n\n\n        this.push = function (packet) {\n          var result = {},\n              offset = 4;\n          result.payloadUnitStartIndicator = !!(packet[1] & 0x40); // pid is a 13-bit field starting at the last bit of packet[1]\n\n          result.pid = packet[1] & 0x1f;\n          result.pid <<= 8;\n          result.pid |= packet[2]; // if an adaption field is present, its length is specified by the\n          // fifth byte of the TS packet header. The adaptation field is\n          // used to add stuffing to PES packets that don't fill a complete\n          // TS packet, and to specify some forms of timing and control data\n          // that we do not currently use.\n\n          if ((packet[3] & 0x30) >>> 4 > 0x01) {\n            offset += packet[offset] + 1;\n          } // parse the rest of the packet based on the type\n\n\n          if (result.pid === 0) {\n            result.type = 'pat';\n            parsePsi(packet.subarray(offset), result);\n            this.trigger('data', result);\n          } else if (result.pid === this.pmtPid) {\n            result.type = 'pmt';\n            parsePsi(packet.subarray(offset), result);\n            this.trigger('data', result); // if there are any packets waiting for a PMT to be found, process them now\n\n            while (this.packetsWaitingForPmt.length) {\n              this.processPes_.apply(this, this.packetsWaitingForPmt.shift());\n            }\n          } else if (this.programMapTable === undefined) {\n            // When we have not seen a PMT yet, defer further processing of\n            // PES packets until one has been parsed\n            this.packetsWaitingForPmt.push([packet, offset, result]);\n          } else {\n            this.processPes_(packet, offset, result);\n          }\n        };\n\n        this.processPes_ = function (packet, offset, result) {\n          // set the appropriate stream type\n          if (result.pid === this.programMapTable.video) {\n            result.streamType = streamTypes.H264_STREAM_TYPE;\n          } else if (result.pid === this.programMapTable.audio) {\n            result.streamType = streamTypes.ADTS_STREAM_TYPE;\n          } else {\n            // if not video or audio, it is timed-metadata or unknown\n            // if unknown, streamType will be undefined\n            result.streamType = this.programMapTable['timed-metadata'][result.pid];\n          }\n\n          result.type = 'pes';\n          result.data = packet.subarray(offset);\n          this.trigger('data', result);\n        };\n      };\n\n      _TransportParseStream.prototype = new stream();\n      _TransportParseStream.STREAM_TYPES = {\n        h264: 0x1b,\n        adts: 0x0f\n      };\n      /**\n       * Reconsistutes program elementary stream (PES) packets from parsed\n       * transport stream packets. That is, if you pipe an\n       * mp2t.TransportParseStream into a mp2t.ElementaryStream, the output\n       * events will be events which capture the bytes for individual PES\n       * packets plus relevant metadata that has been extracted from the\n       * container.\n       */\n\n      _ElementaryStream = function ElementaryStream() {\n        var self = this,\n            // PES packet fragments\n        video = {\n          data: [],\n          size: 0\n        },\n            audio = {\n          data: [],\n          size: 0\n        },\n            timedMetadata = {\n          data: [],\n          size: 0\n        },\n            parsePes = function parsePes(payload, pes) {\n          var ptsDtsFlags; // get the packet length, this will be 0 for video\n\n          pes.packetLength = 6 + (payload[4] << 8 | payload[5]); // find out if this packets starts a new keyframe\n\n          pes.dataAlignmentIndicator = (payload[6] & 0x04) !== 0; // PES packets may be annotated with a PTS value, or a PTS value\n          // and a DTS value. Determine what combination of values is\n          // available to work with.\n\n          ptsDtsFlags = payload[7]; // PTS and DTS are normally stored as a 33-bit number.  Javascript\n          // performs all bitwise operations on 32-bit integers but javascript\n          // supports a much greater range (52-bits) of integer using standard\n          // mathematical operations.\n          // We construct a 31-bit value using bitwise operators over the 31\n          // most significant bits and then multiply by 4 (equal to a left-shift\n          // of 2) before we add the final 2 least significant bits of the\n          // timestamp (equal to an OR.)\n\n          if (ptsDtsFlags & 0xC0) {\n            // the PTS and DTS are not written out directly. For information\n            // on how they are encoded, see\n            // http://dvd.sourceforge.net/dvdinfo/pes-hdr.html\n            pes.pts = (payload[9] & 0x0E) << 27 | (payload[10] & 0xFF) << 20 | (payload[11] & 0xFE) << 12 | (payload[12] & 0xFF) << 5 | (payload[13] & 0xFE) >>> 3;\n            pes.pts *= 4; // Left shift by 2\n\n            pes.pts += (payload[13] & 0x06) >>> 1; // OR by the two LSBs\n\n            pes.dts = pes.pts;\n\n            if (ptsDtsFlags & 0x40) {\n              pes.dts = (payload[14] & 0x0E) << 27 | (payload[15] & 0xFF) << 20 | (payload[16] & 0xFE) << 12 | (payload[17] & 0xFF) << 5 | (payload[18] & 0xFE) >>> 3;\n              pes.dts *= 4; // Left shift by 2\n\n              pes.dts += (payload[18] & 0x06) >>> 1; // OR by the two LSBs\n            }\n          } // the data section starts immediately after the PES header.\n          // pes_header_data_length specifies the number of header bytes\n          // that follow the last byte of the field.\n\n\n          pes.data = payload.subarray(9 + payload[8]);\n        },\n\n        /**\n          * Pass completely parsed PES packets to the next stream in the pipeline\n         **/\n        flushStream = function flushStream(stream$$1, type, forceFlush) {\n          var packetData = new Uint8Array(stream$$1.size),\n              event = {\n            type: type\n          },\n              i = 0,\n              offset = 0,\n              packetFlushable = false,\n              fragment; // do nothing if there is not enough buffered data for a complete\n          // PES header\n\n          if (!stream$$1.data.length || stream$$1.size < 9) {\n            return;\n          }\n\n          event.trackId = stream$$1.data[0].pid; // reassemble the packet\n\n          for (i = 0; i < stream$$1.data.length; i++) {\n            fragment = stream$$1.data[i];\n            packetData.set(fragment.data, offset);\n            offset += fragment.data.byteLength;\n          } // parse assembled packet's PES header\n\n\n          parsePes(packetData, event); // non-video PES packets MUST have a non-zero PES_packet_length\n          // check that there is enough stream data to fill the packet\n\n          packetFlushable = type === 'video' || event.packetLength <= stream$$1.size; // flush pending packets if the conditions are right\n\n          if (forceFlush || packetFlushable) {\n            stream$$1.size = 0;\n            stream$$1.data.length = 0;\n          } // only emit packets that are complete. this is to avoid assembling\n          // incomplete PES packets due to poor segmentation\n\n\n          if (packetFlushable) {\n            self.trigger('data', event);\n          }\n        };\n\n        _ElementaryStream.prototype.init.call(this);\n        /**\n         * Identifies M2TS packet types and parses PES packets using metadata\n         * parsed from the PMT\n         **/\n\n\n        this.push = function (data) {\n          ({\n            pat: function pat() {// we have to wait for the PMT to arrive as well before we\n              // have any meaningful metadata\n            },\n            pes: function pes() {\n              var stream$$1, streamType;\n\n              switch (data.streamType) {\n                case streamTypes.H264_STREAM_TYPE:\n                case streamTypes.H264_STREAM_TYPE:\n                  stream$$1 = video;\n                  streamType = 'video';\n                  break;\n\n                case streamTypes.ADTS_STREAM_TYPE:\n                  stream$$1 = audio;\n                  streamType = 'audio';\n                  break;\n\n                case streamTypes.METADATA_STREAM_TYPE:\n                  stream$$1 = timedMetadata;\n                  streamType = 'timed-metadata';\n                  break;\n\n                default:\n                  // ignore unknown stream types\n                  return;\n              } // if a new packet is starting, we can flush the completed\n              // packet\n\n\n              if (data.payloadUnitStartIndicator) {\n                flushStream(stream$$1, streamType, true);\n              } // buffer this fragment until we are sure we've received the\n              // complete payload\n\n\n              stream$$1.data.push(data);\n              stream$$1.size += data.data.byteLength;\n            },\n            pmt: function pmt() {\n              var event = {\n                type: 'metadata',\n                tracks: []\n              },\n                  programMapTable = data.programMapTable; // translate audio and video streams to tracks\n\n              if (programMapTable.video !== null) {\n                event.tracks.push({\n                  timelineStartInfo: {\n                    baseMediaDecodeTime: 0\n                  },\n                  id: +programMapTable.video,\n                  codec: 'avc',\n                  type: 'video'\n                });\n              }\n\n              if (programMapTable.audio !== null) {\n                event.tracks.push({\n                  timelineStartInfo: {\n                    baseMediaDecodeTime: 0\n                  },\n                  id: +programMapTable.audio,\n                  codec: 'adts',\n                  type: 'audio'\n                });\n              }\n\n              self.trigger('data', event);\n            }\n          })[data.type]();\n        };\n        /**\n         * Flush any remaining input. Video PES packets may be of variable\n         * length. Normally, the start of a new video packet can trigger the\n         * finalization of the previous packet. That is not possible if no\n         * more video is forthcoming, however. In that case, some other\n         * mechanism (like the end of the file) has to be employed. When it is\n         * clear that no additional data is forthcoming, calling this method\n         * will flush the buffered packets.\n         */\n\n\n        this.flush = function () {\n          // !!THIS ORDER IS IMPORTANT!!\n          // video first then audio\n          flushStream(video, 'video');\n          flushStream(audio, 'audio');\n          flushStream(timedMetadata, 'timed-metadata');\n          this.trigger('done');\n        };\n      };\n\n      _ElementaryStream.prototype = new stream();\n      var m2ts = {\n        PAT_PID: 0x0000,\n        MP2T_PACKET_LENGTH: MP2T_PACKET_LENGTH,\n        TransportPacketStream: _TransportPacketStream,\n        TransportParseStream: _TransportParseStream,\n        ElementaryStream: _ElementaryStream,\n        TimestampRolloverStream: TimestampRolloverStream$1,\n        CaptionStream: captionStream.CaptionStream,\n        Cea608Stream: captionStream.Cea608Stream,\n        MetadataStream: metadataStream\n      };\n\n      for (var type in streamTypes) {\n        if (streamTypes.hasOwnProperty(type)) {\n          m2ts[type] = streamTypes[type];\n        }\n      }\n\n      var m2ts_1 = m2ts;\n\n      var _AdtsStream;\n\n      var ADTS_SAMPLING_FREQUENCIES = [96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, 16000, 12000, 11025, 8000, 7350];\n      /*\n       * Accepts a ElementaryStream and emits data events with parsed\n       * AAC Audio Frames of the individual packets. Input audio in ADTS\n       * format is unpacked and re-emitted as AAC frames.\n       *\n       * @see http://wiki.multimedia.cx/index.php?title=ADTS\n       * @see http://wiki.multimedia.cx/?title=Understanding_AAC\n       */\n\n      _AdtsStream = function AdtsStream() {\n        var buffer;\n\n        _AdtsStream.prototype.init.call(this);\n\n        this.push = function (packet) {\n          var i = 0,\n              frameNum = 0,\n              frameLength,\n              protectionSkipBytes,\n              frameEnd,\n              oldBuffer,\n              sampleCount,\n              adtsFrameDuration;\n\n          if (packet.type !== 'audio') {\n            // ignore non-audio data\n            return;\n          } // Prepend any data in the buffer to the input data so that we can parse\n          // aac frames the cross a PES packet boundary\n\n\n          if (buffer) {\n            oldBuffer = buffer;\n            buffer = new Uint8Array(oldBuffer.byteLength + packet.data.byteLength);\n            buffer.set(oldBuffer);\n            buffer.set(packet.data, oldBuffer.byteLength);\n          } else {\n            buffer = packet.data;\n          } // unpack any ADTS frames which have been fully received\n          // for details on the ADTS header, see http://wiki.multimedia.cx/index.php?title=ADTS\n\n\n          while (i + 5 < buffer.length) {\n            // Loook for the start of an ADTS header..\n            if (buffer[i] !== 0xFF || (buffer[i + 1] & 0xF6) !== 0xF0) {\n              // If a valid header was not found,  jump one forward and attempt to\n              // find a valid ADTS header starting at the next byte\n              i++;\n              continue;\n            } // The protection skip bit tells us if we have 2 bytes of CRC data at the\n            // end of the ADTS header\n\n\n            protectionSkipBytes = (~buffer[i + 1] & 0x01) * 2; // Frame length is a 13 bit integer starting 16 bits from the\n            // end of the sync sequence\n\n            frameLength = (buffer[i + 3] & 0x03) << 11 | buffer[i + 4] << 3 | (buffer[i + 5] & 0xe0) >> 5;\n            sampleCount = ((buffer[i + 6] & 0x03) + 1) * 1024;\n            adtsFrameDuration = sampleCount * 90000 / ADTS_SAMPLING_FREQUENCIES[(buffer[i + 2] & 0x3c) >>> 2];\n            frameEnd = i + frameLength; // If we don't have enough data to actually finish this ADTS frame, return\n            // and wait for more data\n\n            if (buffer.byteLength < frameEnd) {\n              return;\n            } // Otherwise, deliver the complete AAC frame\n\n\n            this.trigger('data', {\n              pts: packet.pts + frameNum * adtsFrameDuration,\n              dts: packet.dts + frameNum * adtsFrameDuration,\n              sampleCount: sampleCount,\n              audioobjecttype: (buffer[i + 2] >>> 6 & 0x03) + 1,\n              channelcount: (buffer[i + 2] & 1) << 2 | (buffer[i + 3] & 0xc0) >>> 6,\n              samplerate: ADTS_SAMPLING_FREQUENCIES[(buffer[i + 2] & 0x3c) >>> 2],\n              samplingfrequencyindex: (buffer[i + 2] & 0x3c) >>> 2,\n              // assume ISO/IEC 14496-12 AudioSampleEntry default of 16\n              samplesize: 16,\n              data: buffer.subarray(i + 7 + protectionSkipBytes, frameEnd)\n            }); // If the buffer is empty, clear it and return\n\n            if (buffer.byteLength === frameEnd) {\n              buffer = undefined;\n              return;\n            }\n\n            frameNum++; // Remove the finished frame from the buffer and start the process again\n\n            buffer = buffer.subarray(frameEnd);\n          }\n        };\n\n        this.flush = function () {\n          this.trigger('done');\n        };\n      };\n\n      _AdtsStream.prototype = new stream();\n      var adts = _AdtsStream;\n      var ExpGolomb;\n      /**\n       * Parser for exponential Golomb codes, a variable-bitwidth number encoding\n       * scheme used by h264.\n       */\n\n      ExpGolomb = function ExpGolomb(workingData) {\n        var // the number of bytes left to examine in workingData\n        workingBytesAvailable = workingData.byteLength,\n            // the current word being examined\n        workingWord = 0,\n            // :uint\n        // the number of bits left to examine in the current word\n        workingBitsAvailable = 0; // :uint;\n        // ():uint\n\n        this.length = function () {\n          return 8 * workingBytesAvailable;\n        }; // ():uint\n\n\n        this.bitsAvailable = function () {\n          return 8 * workingBytesAvailable + workingBitsAvailable;\n        }; // ():void\n\n\n        this.loadWord = function () {\n          var position = workingData.byteLength - workingBytesAvailable,\n              workingBytes = new Uint8Array(4),\n              availableBytes = Math.min(4, workingBytesAvailable);\n\n          if (availableBytes === 0) {\n            throw new Error('no bytes available');\n          }\n\n          workingBytes.set(workingData.subarray(position, position + availableBytes));\n          workingWord = new DataView(workingBytes.buffer).getUint32(0); // track the amount of workingData that has been processed\n\n          workingBitsAvailable = availableBytes * 8;\n          workingBytesAvailable -= availableBytes;\n        }; // (count:int):void\n\n\n        this.skipBits = function (count) {\n          var skipBytes; // :int\n\n          if (workingBitsAvailable > count) {\n            workingWord <<= count;\n            workingBitsAvailable -= count;\n          } else {\n            count -= workingBitsAvailable;\n            skipBytes = Math.floor(count / 8);\n            count -= skipBytes * 8;\n            workingBytesAvailable -= skipBytes;\n            this.loadWord();\n            workingWord <<= count;\n            workingBitsAvailable -= count;\n          }\n        }; // (size:int):uint\n\n\n        this.readBits = function (size) {\n          var bits = Math.min(workingBitsAvailable, size),\n              // :uint\n          valu = workingWord >>> 32 - bits; // :uint\n          // if size > 31, handle error\n\n          workingBitsAvailable -= bits;\n\n          if (workingBitsAvailable > 0) {\n            workingWord <<= bits;\n          } else if (workingBytesAvailable > 0) {\n            this.loadWord();\n          }\n\n          bits = size - bits;\n\n          if (bits > 0) {\n            return valu << bits | this.readBits(bits);\n          }\n\n          return valu;\n        }; // ():uint\n\n\n        this.skipLeadingZeros = function () {\n          var leadingZeroCount; // :uint\n\n          for (leadingZeroCount = 0; leadingZeroCount < workingBitsAvailable; ++leadingZeroCount) {\n            if ((workingWord & 0x80000000 >>> leadingZeroCount) !== 0) {\n              // the first bit of working word is 1\n              workingWord <<= leadingZeroCount;\n              workingBitsAvailable -= leadingZeroCount;\n              return leadingZeroCount;\n            }\n          } // we exhausted workingWord and still have not found a 1\n\n\n          this.loadWord();\n          return leadingZeroCount + this.skipLeadingZeros();\n        }; // ():void\n\n\n        this.skipUnsignedExpGolomb = function () {\n          this.skipBits(1 + this.skipLeadingZeros());\n        }; // ():void\n\n\n        this.skipExpGolomb = function () {\n          this.skipBits(1 + this.skipLeadingZeros());\n        }; // ():uint\n\n\n        this.readUnsignedExpGolomb = function () {\n          var clz = this.skipLeadingZeros(); // :uint\n\n          return this.readBits(clz + 1) - 1;\n        }; // ():int\n\n\n        this.readExpGolomb = function () {\n          var valu = this.readUnsignedExpGolomb(); // :int\n\n          if (0x01 & valu) {\n            // the number is odd if the low order bit is set\n            return 1 + valu >>> 1; // add 1 to make it even, and divide by 2\n          }\n\n          return -1 * (valu >>> 1); // divide by two then make it negative\n        }; // Some convenience functions\n        // :Boolean\n\n\n        this.readBoolean = function () {\n          return this.readBits(1) === 1;\n        }; // ():int\n\n\n        this.readUnsignedByte = function () {\n          return this.readBits(8);\n        };\n\n        this.loadWord();\n      };\n\n      var expGolomb = ExpGolomb;\n\n      var _H264Stream, _NalByteStream;\n\n      var PROFILES_WITH_OPTIONAL_SPS_DATA;\n      /**\n       * Accepts a NAL unit byte stream and unpacks the embedded NAL units.\n       */\n\n      _NalByteStream = function NalByteStream() {\n        var syncPoint = 0,\n            i,\n            buffer;\n\n        _NalByteStream.prototype.init.call(this);\n        /*\n         * Scans a byte stream and triggers a data event with the NAL units found.\n         * @param {Object} data Event received from H264Stream\n         * @param {Uint8Array} data.data The h264 byte stream to be scanned\n         *\n         * @see H264Stream.push\n         */\n\n\n        this.push = function (data) {\n          var swapBuffer;\n\n          if (!buffer) {\n            buffer = data.data;\n          } else {\n            swapBuffer = new Uint8Array(buffer.byteLength + data.data.byteLength);\n            swapBuffer.set(buffer);\n            swapBuffer.set(data.data, buffer.byteLength);\n            buffer = swapBuffer;\n          } // Rec. ITU-T H.264, Annex B\n          // scan for NAL unit boundaries\n          // a match looks like this:\n          // 0 0 1 .. NAL .. 0 0 1\n          // ^ sync point        ^ i\n          // or this:\n          // 0 0 1 .. NAL .. 0 0 0\n          // ^ sync point        ^ i\n          // advance the sync point to a NAL start, if necessary\n\n\n          for (; syncPoint < buffer.byteLength - 3; syncPoint++) {\n            if (buffer[syncPoint + 2] === 1) {\n              // the sync point is properly aligned\n              i = syncPoint + 5;\n              break;\n            }\n          }\n\n          while (i < buffer.byteLength) {\n            // look at the current byte to determine if we've hit the end of\n            // a NAL unit boundary\n            switch (buffer[i]) {\n              case 0:\n                // skip past non-sync sequences\n                if (buffer[i - 1] !== 0) {\n                  i += 2;\n                  break;\n                } else if (buffer[i - 2] !== 0) {\n                  i++;\n                  break;\n                } // deliver the NAL unit if it isn't empty\n\n\n                if (syncPoint + 3 !== i - 2) {\n                  this.trigger('data', buffer.subarray(syncPoint + 3, i - 2));\n                } // drop trailing zeroes\n\n\n                do {\n                  i++;\n                } while (buffer[i] !== 1 && i < buffer.length);\n\n                syncPoint = i - 2;\n                i += 3;\n                break;\n\n              case 1:\n                // skip past non-sync sequences\n                if (buffer[i - 1] !== 0 || buffer[i - 2] !== 0) {\n                  i += 3;\n                  break;\n                } // deliver the NAL unit\n\n\n                this.trigger('data', buffer.subarray(syncPoint + 3, i - 2));\n                syncPoint = i - 2;\n                i += 3;\n                break;\n\n              default:\n                // the current byte isn't a one or zero, so it cannot be part\n                // of a sync sequence\n                i += 3;\n                break;\n            }\n          } // filter out the NAL units that were delivered\n\n\n          buffer = buffer.subarray(syncPoint);\n          i -= syncPoint;\n          syncPoint = 0;\n        };\n\n        this.flush = function () {\n          // deliver the last buffered NAL unit\n          if (buffer && buffer.byteLength > 3) {\n            this.trigger('data', buffer.subarray(syncPoint + 3));\n          } // reset the stream state\n\n\n          buffer = null;\n          syncPoint = 0;\n          this.trigger('done');\n        };\n      };\n\n      _NalByteStream.prototype = new stream(); // values of profile_idc that indicate additional fields are included in the SPS\n      // see Recommendation ITU-T H.264 (4/2013),\n      // 7.3.2.1.1 Sequence parameter set data syntax\n\n      PROFILES_WITH_OPTIONAL_SPS_DATA = {\n        100: true,\n        110: true,\n        122: true,\n        244: true,\n        44: true,\n        83: true,\n        86: true,\n        118: true,\n        128: true,\n        138: true,\n        139: true,\n        134: true\n      };\n      /**\n       * Accepts input from a ElementaryStream and produces H.264 NAL unit data\n       * events.\n       */\n\n      _H264Stream = function H264Stream() {\n        var nalByteStream = new _NalByteStream(),\n            self,\n            trackId,\n            currentPts,\n            currentDts,\n            discardEmulationPreventionBytes,\n            readSequenceParameterSet,\n            skipScalingList;\n\n        _H264Stream.prototype.init.call(this);\n\n        self = this;\n        /*\n         * Pushes a packet from a stream onto the NalByteStream\n         *\n         * @param {Object} packet - A packet received from a stream\n         * @param {Uint8Array} packet.data - The raw bytes of the packet\n         * @param {Number} packet.dts - Decode timestamp of the packet\n         * @param {Number} packet.pts - Presentation timestamp of the packet\n         * @param {Number} packet.trackId - The id of the h264 track this packet came from\n         * @param {('video'|'audio')} packet.type - The type of packet\n         *\n         */\n\n        this.push = function (packet) {\n          if (packet.type !== 'video') {\n            return;\n          }\n\n          trackId = packet.trackId;\n          currentPts = packet.pts;\n          currentDts = packet.dts;\n          nalByteStream.push(packet);\n        };\n        /*\n         * Identify NAL unit types and pass on the NALU, trackId, presentation and decode timestamps\n         * for the NALUs to the next stream component.\n         * Also, preprocess caption and sequence parameter NALUs.\n         *\n         * @param {Uint8Array} data - A NAL unit identified by `NalByteStream.push`\n         * @see NalByteStream.push\n         */\n\n\n        nalByteStream.on('data', function (data) {\n          var event = {\n            trackId: trackId,\n            pts: currentPts,\n            dts: currentDts,\n            data: data\n          };\n\n          switch (data[0] & 0x1f) {\n            case 0x05:\n              event.nalUnitType = 'slice_layer_without_partitioning_rbsp_idr';\n              break;\n\n            case 0x06:\n              event.nalUnitType = 'sei_rbsp';\n              event.escapedRBSP = discardEmulationPreventionBytes(data.subarray(1));\n              break;\n\n            case 0x07:\n              event.nalUnitType = 'seq_parameter_set_rbsp';\n              event.escapedRBSP = discardEmulationPreventionBytes(data.subarray(1));\n              event.config = readSequenceParameterSet(event.escapedRBSP);\n              break;\n\n            case 0x08:\n              event.nalUnitType = 'pic_parameter_set_rbsp';\n              break;\n\n            case 0x09:\n              event.nalUnitType = 'access_unit_delimiter_rbsp';\n              break;\n\n            default:\n              break;\n          } // This triggers data on the H264Stream\n\n\n          self.trigger('data', event);\n        });\n        nalByteStream.on('done', function () {\n          self.trigger('done');\n        });\n\n        this.flush = function () {\n          nalByteStream.flush();\n        };\n        /**\n         * Advance the ExpGolomb decoder past a scaling list. The scaling\n         * list is optionally transmitted as part of a sequence parameter\n         * set and is not relevant to transmuxing.\n         * @param count {number} the number of entries in this scaling list\n         * @param expGolombDecoder {object} an ExpGolomb pointed to the\n         * start of a scaling list\n         * @see Recommendation ITU-T H.264, Section 7.3.2.1.1.1\n         */\n\n\n        skipScalingList = function skipScalingList(count, expGolombDecoder) {\n          var lastScale = 8,\n              nextScale = 8,\n              j,\n              deltaScale;\n\n          for (j = 0; j < count; j++) {\n            if (nextScale !== 0) {\n              deltaScale = expGolombDecoder.readExpGolomb();\n              nextScale = (lastScale + deltaScale + 256) % 256;\n            }\n\n            lastScale = nextScale === 0 ? lastScale : nextScale;\n          }\n        };\n        /**\n         * Expunge any \"Emulation Prevention\" bytes from a \"Raw Byte\n         * Sequence Payload\"\n         * @param data {Uint8Array} the bytes of a RBSP from a NAL\n         * unit\n         * @return {Uint8Array} the RBSP without any Emulation\n         * Prevention Bytes\n         */\n\n\n        discardEmulationPreventionBytes = function discardEmulationPreventionBytes(data) {\n          var length = data.byteLength,\n              emulationPreventionBytesPositions = [],\n              i = 1,\n              newLength,\n              newData; // Find all `Emulation Prevention Bytes`\n\n          while (i < length - 2) {\n            if (data[i] === 0 && data[i + 1] === 0 && data[i + 2] === 0x03) {\n              emulationPreventionBytesPositions.push(i + 2);\n              i += 2;\n            } else {\n              i++;\n            }\n          } // If no Emulation Prevention Bytes were found just return the original\n          // array\n\n\n          if (emulationPreventionBytesPositions.length === 0) {\n            return data;\n          } // Create a new array to hold the NAL unit data\n\n\n          newLength = length - emulationPreventionBytesPositions.length;\n          newData = new Uint8Array(newLength);\n          var sourceIndex = 0;\n\n          for (i = 0; i < newLength; sourceIndex++, i++) {\n            if (sourceIndex === emulationPreventionBytesPositions[0]) {\n              // Skip this byte\n              sourceIndex++; // Remove this position index\n\n              emulationPreventionBytesPositions.shift();\n            }\n\n            newData[i] = data[sourceIndex];\n          }\n\n          return newData;\n        };\n        /**\n         * Read a sequence parameter set and return some interesting video\n         * properties. A sequence parameter set is the H264 metadata that\n         * describes the properties of upcoming video frames.\n         * @param data {Uint8Array} the bytes of a sequence parameter set\n         * @return {object} an object with configuration parsed from the\n         * sequence parameter set, including the dimensions of the\n         * associated video frames.\n         */\n\n\n        readSequenceParameterSet = function readSequenceParameterSet(data) {\n          var frameCropLeftOffset = 0,\n              frameCropRightOffset = 0,\n              frameCropTopOffset = 0,\n              frameCropBottomOffset = 0,\n              sarScale = 1,\n              expGolombDecoder,\n              profileIdc,\n              levelIdc,\n              profileCompatibility,\n              chromaFormatIdc,\n              picOrderCntType,\n              numRefFramesInPicOrderCntCycle,\n              picWidthInMbsMinus1,\n              picHeightInMapUnitsMinus1,\n              frameMbsOnlyFlag,\n              scalingListCount,\n              sarRatio,\n              aspectRatioIdc,\n              i;\n          expGolombDecoder = new expGolomb(data);\n          profileIdc = expGolombDecoder.readUnsignedByte(); // profile_idc\n\n          profileCompatibility = expGolombDecoder.readUnsignedByte(); // constraint_set[0-5]_flag\n\n          levelIdc = expGolombDecoder.readUnsignedByte(); // level_idc u(8)\n\n          expGolombDecoder.skipUnsignedExpGolomb(); // seq_parameter_set_id\n          // some profiles have more optional data we don't need\n\n          if (PROFILES_WITH_OPTIONAL_SPS_DATA[profileIdc]) {\n            chromaFormatIdc = expGolombDecoder.readUnsignedExpGolomb();\n\n            if (chromaFormatIdc === 3) {\n              expGolombDecoder.skipBits(1); // separate_colour_plane_flag\n            }\n\n            expGolombDecoder.skipUnsignedExpGolomb(); // bit_depth_luma_minus8\n\n            expGolombDecoder.skipUnsignedExpGolomb(); // bit_depth_chroma_minus8\n\n            expGolombDecoder.skipBits(1); // qpprime_y_zero_transform_bypass_flag\n\n            if (expGolombDecoder.readBoolean()) {\n              // seq_scaling_matrix_present_flag\n              scalingListCount = chromaFormatIdc !== 3 ? 8 : 12;\n\n              for (i = 0; i < scalingListCount; i++) {\n                if (expGolombDecoder.readBoolean()) {\n                  // seq_scaling_list_present_flag[ i ]\n                  if (i < 6) {\n                    skipScalingList(16, expGolombDecoder);\n                  } else {\n                    skipScalingList(64, expGolombDecoder);\n                  }\n                }\n              }\n            }\n          }\n\n          expGolombDecoder.skipUnsignedExpGolomb(); // log2_max_frame_num_minus4\n\n          picOrderCntType = expGolombDecoder.readUnsignedExpGolomb();\n\n          if (picOrderCntType === 0) {\n            expGolombDecoder.readUnsignedExpGolomb(); // log2_max_pic_order_cnt_lsb_minus4\n          } else if (picOrderCntType === 1) {\n            expGolombDecoder.skipBits(1); // delta_pic_order_always_zero_flag\n\n            expGolombDecoder.skipExpGolomb(); // offset_for_non_ref_pic\n\n            expGolombDecoder.skipExpGolomb(); // offset_for_top_to_bottom_field\n\n            numRefFramesInPicOrderCntCycle = expGolombDecoder.readUnsignedExpGolomb();\n\n            for (i = 0; i < numRefFramesInPicOrderCntCycle; i++) {\n              expGolombDecoder.skipExpGolomb(); // offset_for_ref_frame[ i ]\n            }\n          }\n\n          expGolombDecoder.skipUnsignedExpGolomb(); // max_num_ref_frames\n\n          expGolombDecoder.skipBits(1); // gaps_in_frame_num_value_allowed_flag\n\n          picWidthInMbsMinus1 = expGolombDecoder.readUnsignedExpGolomb();\n          picHeightInMapUnitsMinus1 = expGolombDecoder.readUnsignedExpGolomb();\n          frameMbsOnlyFlag = expGolombDecoder.readBits(1);\n\n          if (frameMbsOnlyFlag === 0) {\n            expGolombDecoder.skipBits(1); // mb_adaptive_frame_field_flag\n          }\n\n          expGolombDecoder.skipBits(1); // direct_8x8_inference_flag\n\n          if (expGolombDecoder.readBoolean()) {\n            // frame_cropping_flag\n            frameCropLeftOffset = expGolombDecoder.readUnsignedExpGolomb();\n            frameCropRightOffset = expGolombDecoder.readUnsignedExpGolomb();\n            frameCropTopOffset = expGolombDecoder.readUnsignedExpGolomb();\n            frameCropBottomOffset = expGolombDecoder.readUnsignedExpGolomb();\n          }\n\n          if (expGolombDecoder.readBoolean()) {\n            // vui_parameters_present_flag\n            if (expGolombDecoder.readBoolean()) {\n              // aspect_ratio_info_present_flag\n              aspectRatioIdc = expGolombDecoder.readUnsignedByte();\n\n              switch (aspectRatioIdc) {\n                case 1:\n                  sarRatio = [1, 1];\n                  break;\n\n                case 2:\n                  sarRatio = [12, 11];\n                  break;\n\n                case 3:\n                  sarRatio = [10, 11];\n                  break;\n\n                case 4:\n                  sarRatio = [16, 11];\n                  break;\n\n                case 5:\n                  sarRatio = [40, 33];\n                  break;\n\n                case 6:\n                  sarRatio = [24, 11];\n                  break;\n\n                case 7:\n                  sarRatio = [20, 11];\n                  break;\n\n                case 8:\n                  sarRatio = [32, 11];\n                  break;\n\n                case 9:\n                  sarRatio = [80, 33];\n                  break;\n\n                case 10:\n                  sarRatio = [18, 11];\n                  break;\n\n                case 11:\n                  sarRatio = [15, 11];\n                  break;\n\n                case 12:\n                  sarRatio = [64, 33];\n                  break;\n\n                case 13:\n                  sarRatio = [160, 99];\n                  break;\n\n                case 14:\n                  sarRatio = [4, 3];\n                  break;\n\n                case 15:\n                  sarRatio = [3, 2];\n                  break;\n\n                case 16:\n                  sarRatio = [2, 1];\n                  break;\n\n                case 255:\n                  {\n                    sarRatio = [expGolombDecoder.readUnsignedByte() << 8 | expGolombDecoder.readUnsignedByte(), expGolombDecoder.readUnsignedByte() << 8 | expGolombDecoder.readUnsignedByte()];\n                    break;\n                  }\n              }\n\n              if (sarRatio) {\n                sarScale = sarRatio[0] / sarRatio[1];\n              }\n            }\n          }\n\n          return {\n            profileIdc: profileIdc,\n            levelIdc: levelIdc,\n            profileCompatibility: profileCompatibility,\n            width: Math.ceil(((picWidthInMbsMinus1 + 1) * 16 - frameCropLeftOffset * 2 - frameCropRightOffset * 2) * sarScale),\n            height: (2 - frameMbsOnlyFlag) * (picHeightInMapUnitsMinus1 + 1) * 16 - frameCropTopOffset * 2 - frameCropBottomOffset * 2\n          };\n        };\n      };\n\n      _H264Stream.prototype = new stream();\n      var h264 = {\n        H264Stream: _H264Stream,\n        NalByteStream: _NalByteStream\n      };\n      /**\n       * mux.js\n       *\n       * Copyright (c) 2016 Brightcove\n       * All rights reserved.\n       *\n       * Utilities to detect basic properties and metadata about Aac data.\n       */\n\n      var ADTS_SAMPLING_FREQUENCIES$1 = [96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, 16000, 12000, 11025, 8000, 7350];\n\n      var isLikelyAacData = function isLikelyAacData(data) {\n        if (data[0] === 'I'.charCodeAt(0) && data[1] === 'D'.charCodeAt(0) && data[2] === '3'.charCodeAt(0)) {\n          return true;\n        }\n\n        return false;\n      };\n\n      var parseSyncSafeInteger$1 = function parseSyncSafeInteger(data) {\n        return data[0] << 21 | data[1] << 14 | data[2] << 7 | data[3];\n      }; // return a percent-encoded representation of the specified byte range\n      // @see http://en.wikipedia.org/wiki/Percent-encoding\n\n\n      var percentEncode$1 = function percentEncode(bytes, start, end) {\n        var i,\n            result = '';\n\n        for (i = start; i < end; i++) {\n          result += '%' + ('00' + bytes[i].toString(16)).slice(-2);\n        }\n\n        return result;\n      }; // return the string representation of the specified byte range,\n      // interpreted as ISO-8859-1.\n\n\n      var parseIso88591$1 = function parseIso88591(bytes, start, end) {\n        return unescape(percentEncode$1(bytes, start, end)); // jshint ignore:line\n      };\n\n      var parseId3TagSize = function parseId3TagSize(header, byteIndex) {\n        var returnSize = header[byteIndex + 6] << 21 | header[byteIndex + 7] << 14 | header[byteIndex + 8] << 7 | header[byteIndex + 9],\n            flags = header[byteIndex + 5],\n            footerPresent = (flags & 16) >> 4;\n\n        if (footerPresent) {\n          return returnSize + 20;\n        }\n\n        return returnSize + 10;\n      };\n\n      var parseAdtsSize = function parseAdtsSize(header, byteIndex) {\n        var lowThree = (header[byteIndex + 5] & 0xE0) >> 5,\n            middle = header[byteIndex + 4] << 3,\n            highTwo = header[byteIndex + 3] & 0x3 << 11;\n        return highTwo | middle | lowThree;\n      };\n\n      var parseType$1 = function parseType(header, byteIndex) {\n        if (header[byteIndex] === 'I'.charCodeAt(0) && header[byteIndex + 1] === 'D'.charCodeAt(0) && header[byteIndex + 2] === '3'.charCodeAt(0)) {\n          return 'timed-metadata';\n        } else if (header[byteIndex] & 0xff === 0xff && (header[byteIndex + 1] & 0xf0) === 0xf0) {\n          return 'audio';\n        }\n\n        return null;\n      };\n\n      var parseSampleRate = function parseSampleRate(packet) {\n        var i = 0;\n\n        while (i + 5 < packet.length) {\n          if (packet[i] !== 0xFF || (packet[i + 1] & 0xF6) !== 0xF0) {\n            // If a valid header was not found,  jump one forward and attempt to\n            // find a valid ADTS header starting at the next byte\n            i++;\n            continue;\n          }\n\n          return ADTS_SAMPLING_FREQUENCIES$1[(packet[i + 2] & 0x3c) >>> 2];\n        }\n\n        return null;\n      };\n\n      var parseAacTimestamp = function parseAacTimestamp(packet) {\n        var frameStart, frameSize, frame, frameHeader; // find the start of the first frame and the end of the tag\n\n        frameStart = 10;\n\n        if (packet[5] & 0x40) {\n          // advance the frame start past the extended header\n          frameStart += 4; // header size field\n\n          frameStart += parseSyncSafeInteger$1(packet.subarray(10, 14));\n        } // parse one or more ID3 frames\n        // http://id3.org/id3v2.3.0#ID3v2_frame_overview\n\n\n        do {\n          // determine the number of bytes in this frame\n          frameSize = parseSyncSafeInteger$1(packet.subarray(frameStart + 4, frameStart + 8));\n\n          if (frameSize < 1) {\n            return null;\n          }\n\n          frameHeader = String.fromCharCode(packet[frameStart], packet[frameStart + 1], packet[frameStart + 2], packet[frameStart + 3]);\n\n          if (frameHeader === 'PRIV') {\n            frame = packet.subarray(frameStart + 10, frameStart + frameSize + 10);\n\n            for (var i = 0; i < frame.byteLength; i++) {\n              if (frame[i] === 0) {\n                var owner = parseIso88591$1(frame, 0, i);\n\n                if (owner === 'com.apple.streaming.transportStreamTimestamp') {\n                  var d = frame.subarray(i + 1);\n                  var size = (d[3] & 0x01) << 30 | d[4] << 22 | d[5] << 14 | d[6] << 6 | d[7] >>> 2;\n                  size *= 4;\n                  size += d[7] & 0x03;\n                  return size;\n                }\n\n                break;\n              }\n            }\n          }\n\n          frameStart += 10; // advance past the frame header\n\n          frameStart += frameSize; // advance past the frame body\n        } while (frameStart < packet.byteLength);\n\n        return null;\n      };\n\n      var utils = {\n        isLikelyAacData: isLikelyAacData,\n        parseId3TagSize: parseId3TagSize,\n        parseAdtsSize: parseAdtsSize,\n        parseType: parseType$1,\n        parseSampleRate: parseSampleRate,\n        parseAacTimestamp: parseAacTimestamp\n      }; // Constants\n\n      var _AacStream;\n      /**\n       * Splits an incoming stream of binary data into ADTS and ID3 Frames.\n       */\n\n\n      _AacStream = function AacStream() {\n        var everything = new Uint8Array(),\n            timeStamp = 0;\n\n        _AacStream.prototype.init.call(this);\n\n        this.setTimestamp = function (timestamp) {\n          timeStamp = timestamp;\n        };\n\n        this.push = function (bytes) {\n          var frameSize = 0,\n              byteIndex = 0,\n              bytesLeft,\n              chunk,\n              packet,\n              tempLength; // If there are bytes remaining from the last segment, prepend them to the\n          // bytes that were pushed in\n\n          if (everything.length) {\n            tempLength = everything.length;\n            everything = new Uint8Array(bytes.byteLength + tempLength);\n            everything.set(everything.subarray(0, tempLength));\n            everything.set(bytes, tempLength);\n          } else {\n            everything = bytes;\n          }\n\n          while (everything.length - byteIndex >= 3) {\n            if (everything[byteIndex] === 'I'.charCodeAt(0) && everything[byteIndex + 1] === 'D'.charCodeAt(0) && everything[byteIndex + 2] === '3'.charCodeAt(0)) {\n              // Exit early because we don't have enough to parse\n              // the ID3 tag header\n              if (everything.length - byteIndex < 10) {\n                break;\n              } // check framesize\n\n\n              frameSize = utils.parseId3TagSize(everything, byteIndex); // Exit early if we don't have enough in the buffer\n              // to emit a full packet\n              // Add to byteIndex to support multiple ID3 tags in sequence\n\n              if (byteIndex + frameSize > everything.length) {\n                break;\n              }\n\n              chunk = {\n                type: 'timed-metadata',\n                data: everything.subarray(byteIndex, byteIndex + frameSize)\n              };\n              this.trigger('data', chunk);\n              byteIndex += frameSize;\n              continue;\n            } else if ((everything[byteIndex] & 0xff) === 0xff && (everything[byteIndex + 1] & 0xf0) === 0xf0) {\n              // Exit early because we don't have enough to parse\n              // the ADTS frame header\n              if (everything.length - byteIndex < 7) {\n                break;\n              }\n\n              frameSize = utils.parseAdtsSize(everything, byteIndex); // Exit early if we don't have enough in the buffer\n              // to emit a full packet\n\n              if (byteIndex + frameSize > everything.length) {\n                break;\n              }\n\n              packet = {\n                type: 'audio',\n                data: everything.subarray(byteIndex, byteIndex + frameSize),\n                pts: timeStamp,\n                dts: timeStamp\n              };\n              this.trigger('data', packet);\n              byteIndex += frameSize;\n              continue;\n            }\n\n            byteIndex++;\n          }\n\n          bytesLeft = everything.length - byteIndex;\n\n          if (bytesLeft > 0) {\n            everything = everything.subarray(byteIndex);\n          } else {\n            everything = new Uint8Array();\n          }\n        };\n      };\n\n      _AacStream.prototype = new stream();\n      var aac = _AacStream;\n      var H264Stream = h264.H264Stream;\n      var isLikelyAacData$1 = utils.isLikelyAacData; // constants\n\n      var AUDIO_PROPERTIES = ['audioobjecttype', 'channelcount', 'samplerate', 'samplingfrequencyindex', 'samplesize'];\n      var VIDEO_PROPERTIES = ['width', 'height', 'profileIdc', 'levelIdc', 'profileCompatibility']; // object types\n\n      var _VideoSegmentStream, _AudioSegmentStream, _Transmuxer, _CoalesceStream;\n      /**\n       * Compare two arrays (even typed) for same-ness\n       */\n\n\n      var arrayEquals = function arrayEquals(a, b) {\n        var i;\n\n        if (a.length !== b.length) {\n          return false;\n        } // compare the value of each element in the array\n\n\n        for (i = 0; i < a.length; i++) {\n          if (a[i] !== b[i]) {\n            return false;\n          }\n        }\n\n        return true;\n      };\n      /**\n       * Constructs a single-track, ISO BMFF media segment from AAC data\n       * events. The output of this stream can be fed to a SourceBuffer\n       * configured with a suitable initialization segment.\n       * @param track {object} track metadata configuration\n       * @param options {object} transmuxer options object\n       * @param options.keepOriginalTimestamps {boolean} If true, keep the timestamps\n       *        in the source; false to adjust the first segment to start at 0.\n       */\n\n\n      _AudioSegmentStream = function AudioSegmentStream(track, options) {\n        var adtsFrames = [],\n            sequenceNumber = 0,\n            earliestAllowedDts = 0,\n            audioAppendStartTs = 0,\n            videoBaseMediaDecodeTime = Infinity;\n        options = options || {};\n\n        _AudioSegmentStream.prototype.init.call(this);\n\n        this.push = function (data) {\n          trackDecodeInfo.collectDtsInfo(track, data);\n\n          if (track) {\n            AUDIO_PROPERTIES.forEach(function (prop) {\n              track[prop] = data[prop];\n            });\n          } // buffer audio data until end() is called\n\n\n          adtsFrames.push(data);\n        };\n\n        this.setEarliestDts = function (earliestDts) {\n          earliestAllowedDts = earliestDts - track.timelineStartInfo.baseMediaDecodeTime;\n        };\n\n        this.setVideoBaseMediaDecodeTime = function (baseMediaDecodeTime) {\n          videoBaseMediaDecodeTime = baseMediaDecodeTime;\n        };\n\n        this.setAudioAppendStart = function (timestamp) {\n          audioAppendStartTs = timestamp;\n        };\n\n        this.flush = function () {\n          var frames, moof, mdat, boxes; // return early if no audio data has been observed\n\n          if (adtsFrames.length === 0) {\n            this.trigger('done', 'AudioSegmentStream');\n            return;\n          }\n\n          frames = audioFrameUtils.trimAdtsFramesByEarliestDts(adtsFrames, track, earliestAllowedDts);\n          track.baseMediaDecodeTime = trackDecodeInfo.calculateTrackBaseMediaDecodeTime(track, options.keepOriginalTimestamps);\n          audioFrameUtils.prefixWithSilence(track, frames, audioAppendStartTs, videoBaseMediaDecodeTime); // we have to build the index from byte locations to\n          // samples (that is, adts frames) in the audio data\n\n          track.samples = audioFrameUtils.generateSampleTable(frames); // concatenate the audio data to constuct the mdat\n\n          mdat = mp4Generator.mdat(audioFrameUtils.concatenateFrameData(frames));\n          adtsFrames = [];\n          moof = mp4Generator.moof(sequenceNumber, [track]);\n          boxes = new Uint8Array(moof.byteLength + mdat.byteLength); // bump the sequence number for next time\n\n          sequenceNumber++;\n          boxes.set(moof);\n          boxes.set(mdat, moof.byteLength);\n          trackDecodeInfo.clearDtsInfo(track);\n          this.trigger('data', {\n            track: track,\n            boxes: boxes\n          });\n          this.trigger('done', 'AudioSegmentStream');\n        };\n      };\n\n      _AudioSegmentStream.prototype = new stream();\n      /**\n       * Constructs a single-track, ISO BMFF media segment from H264 data\n       * events. The output of this stream can be fed to a SourceBuffer\n       * configured with a suitable initialization segment.\n       * @param track {object} track metadata configuration\n       * @param options {object} transmuxer options object\n       * @param options.alignGopsAtEnd {boolean} If true, start from the end of the\n       *        gopsToAlignWith list when attempting to align gop pts\n       * @param options.keepOriginalTimestamps {boolean} If true, keep the timestamps\n       *        in the source; false to adjust the first segment to start at 0.\n       */\n\n      _VideoSegmentStream = function VideoSegmentStream(track, options) {\n        var sequenceNumber = 0,\n            nalUnits = [],\n            gopsToAlignWith = [],\n            config,\n            pps;\n        options = options || {};\n\n        _VideoSegmentStream.prototype.init.call(this);\n\n        delete track.minPTS;\n        this.gopCache_ = [];\n        /**\n          * Constructs a ISO BMFF segment given H264 nalUnits\n          * @param {Object} nalUnit A data event representing a nalUnit\n          * @param {String} nalUnit.nalUnitType\n          * @param {Object} nalUnit.config Properties for a mp4 track\n          * @param {Uint8Array} nalUnit.data The nalUnit bytes\n          * @see lib/codecs/h264.js\n         **/\n\n        this.push = function (nalUnit) {\n          trackDecodeInfo.collectDtsInfo(track, nalUnit); // record the track config\n\n          if (nalUnit.nalUnitType === 'seq_parameter_set_rbsp' && !config) {\n            config = nalUnit.config;\n            track.sps = [nalUnit.data];\n            VIDEO_PROPERTIES.forEach(function (prop) {\n              track[prop] = config[prop];\n            }, this);\n          }\n\n          if (nalUnit.nalUnitType === 'pic_parameter_set_rbsp' && !pps) {\n            pps = nalUnit.data;\n            track.pps = [nalUnit.data];\n          } // buffer video until flush() is called\n\n\n          nalUnits.push(nalUnit);\n        };\n        /**\n          * Pass constructed ISO BMFF track and boxes on to the\n          * next stream in the pipeline\n         **/\n\n\n        this.flush = function () {\n          var frames, gopForFusion, gops, moof, mdat, boxes; // Throw away nalUnits at the start of the byte stream until\n          // we find the first AUD\n\n          while (nalUnits.length) {\n            if (nalUnits[0].nalUnitType === 'access_unit_delimiter_rbsp') {\n              break;\n            }\n\n            nalUnits.shift();\n          } // Return early if no video data has been observed\n\n\n          if (nalUnits.length === 0) {\n            this.resetStream_();\n            this.trigger('done', 'VideoSegmentStream');\n            return;\n          } // Organize the raw nal-units into arrays that represent\n          // higher-level constructs such as frames and gops\n          // (group-of-pictures)\n\n\n          frames = frameUtils.groupNalsIntoFrames(nalUnits);\n          gops = frameUtils.groupFramesIntoGops(frames); // If the first frame of this fragment is not a keyframe we have\n          // a problem since MSE (on Chrome) requires a leading keyframe.\n          //\n          // We have two approaches to repairing this situation:\n          // 1) GOP-FUSION:\n          //    This is where we keep track of the GOPS (group-of-pictures)\n          //    from previous fragments and attempt to find one that we can\n          //    prepend to the current fragment in order to create a valid\n          //    fragment.\n          // 2) KEYFRAME-PULLING:\n          //    Here we search for the first keyframe in the fragment and\n          //    throw away all the frames between the start of the fragment\n          //    and that keyframe. We then extend the duration and pull the\n          //    PTS of the keyframe forward so that it covers the time range\n          //    of the frames that were disposed of.\n          //\n          // #1 is far prefereable over #2 which can cause \"stuttering\" but\n          // requires more things to be just right.\n\n          if (!gops[0][0].keyFrame) {\n            // Search for a gop for fusion from our gopCache\n            gopForFusion = this.getGopForFusion_(nalUnits[0], track);\n\n            if (gopForFusion) {\n              gops.unshift(gopForFusion); // Adjust Gops' metadata to account for the inclusion of the\n              // new gop at the beginning\n\n              gops.byteLength += gopForFusion.byteLength;\n              gops.nalCount += gopForFusion.nalCount;\n              gops.pts = gopForFusion.pts;\n              gops.dts = gopForFusion.dts;\n              gops.duration += gopForFusion.duration;\n            } else {\n              // If we didn't find a candidate gop fall back to keyframe-pulling\n              gops = frameUtils.extendFirstKeyFrame(gops);\n            }\n          } // Trim gops to align with gopsToAlignWith\n\n\n          if (gopsToAlignWith.length) {\n            var alignedGops;\n\n            if (options.alignGopsAtEnd) {\n              alignedGops = this.alignGopsAtEnd_(gops);\n            } else {\n              alignedGops = this.alignGopsAtStart_(gops);\n            }\n\n            if (!alignedGops) {\n              // save all the nals in the last GOP into the gop cache\n              this.gopCache_.unshift({\n                gop: gops.pop(),\n                pps: track.pps,\n                sps: track.sps\n              }); // Keep a maximum of 6 GOPs in the cache\n\n              this.gopCache_.length = Math.min(6, this.gopCache_.length); // Clear nalUnits\n\n              nalUnits = []; // return early no gops can be aligned with desired gopsToAlignWith\n\n              this.resetStream_();\n              this.trigger('done', 'VideoSegmentStream');\n              return;\n            } // Some gops were trimmed. clear dts info so minSegmentDts and pts are correct\n            // when recalculated before sending off to CoalesceStream\n\n\n            trackDecodeInfo.clearDtsInfo(track);\n            gops = alignedGops;\n          }\n\n          trackDecodeInfo.collectDtsInfo(track, gops); // First, we have to build the index from byte locations to\n          // samples (that is, frames) in the video data\n\n          track.samples = frameUtils.generateSampleTable(gops); // Concatenate the video data and construct the mdat\n\n          mdat = mp4Generator.mdat(frameUtils.concatenateNalData(gops));\n          track.baseMediaDecodeTime = trackDecodeInfo.calculateTrackBaseMediaDecodeTime(track, options.keepOriginalTimestamps);\n          this.trigger('processedGopsInfo', gops.map(function (gop) {\n            return {\n              pts: gop.pts,\n              dts: gop.dts,\n              byteLength: gop.byteLength\n            };\n          })); // save all the nals in the last GOP into the gop cache\n\n          this.gopCache_.unshift({\n            gop: gops.pop(),\n            pps: track.pps,\n            sps: track.sps\n          }); // Keep a maximum of 6 GOPs in the cache\n\n          this.gopCache_.length = Math.min(6, this.gopCache_.length); // Clear nalUnits\n\n          nalUnits = [];\n          this.trigger('baseMediaDecodeTime', track.baseMediaDecodeTime);\n          this.trigger('timelineStartInfo', track.timelineStartInfo);\n          moof = mp4Generator.moof(sequenceNumber, [track]); // it would be great to allocate this array up front instead of\n          // throwing away hundreds of media segment fragments\n\n          boxes = new Uint8Array(moof.byteLength + mdat.byteLength); // Bump the sequence number for next time\n\n          sequenceNumber++;\n          boxes.set(moof);\n          boxes.set(mdat, moof.byteLength);\n          this.trigger('data', {\n            track: track,\n            boxes: boxes\n          });\n          this.resetStream_(); // Continue with the flush process now\n\n          this.trigger('done', 'VideoSegmentStream');\n        };\n\n        this.resetStream_ = function () {\n          trackDecodeInfo.clearDtsInfo(track); // reset config and pps because they may differ across segments\n          // for instance, when we are rendition switching\n\n          config = undefined;\n          pps = undefined;\n        }; // Search for a candidate Gop for gop-fusion from the gop cache and\n        // return it or return null if no good candidate was found\n\n\n        this.getGopForFusion_ = function (nalUnit) {\n          var halfSecond = 45000,\n              // Half-a-second in a 90khz clock\n          allowableOverlap = 10000,\n              // About 3 frames @ 30fps\n          nearestDistance = Infinity,\n              dtsDistance,\n              nearestGopObj,\n              currentGop,\n              currentGopObj,\n              i; // Search for the GOP nearest to the beginning of this nal unit\n\n          for (i = 0; i < this.gopCache_.length; i++) {\n            currentGopObj = this.gopCache_[i];\n            currentGop = currentGopObj.gop; // Reject Gops with different SPS or PPS\n\n            if (!(track.pps && arrayEquals(track.pps[0], currentGopObj.pps[0])) || !(track.sps && arrayEquals(track.sps[0], currentGopObj.sps[0]))) {\n              continue;\n            } // Reject Gops that would require a negative baseMediaDecodeTime\n\n\n            if (currentGop.dts < track.timelineStartInfo.dts) {\n              continue;\n            } // The distance between the end of the gop and the start of the nalUnit\n\n\n            dtsDistance = nalUnit.dts - currentGop.dts - currentGop.duration; // Only consider GOPS that start before the nal unit and end within\n            // a half-second of the nal unit\n\n            if (dtsDistance >= -allowableOverlap && dtsDistance <= halfSecond) {\n              // Always use the closest GOP we found if there is more than\n              // one candidate\n              if (!nearestGopObj || nearestDistance > dtsDistance) {\n                nearestGopObj = currentGopObj;\n                nearestDistance = dtsDistance;\n              }\n            }\n          }\n\n          if (nearestGopObj) {\n            return nearestGopObj.gop;\n          }\n\n          return null;\n        }; // trim gop list to the first gop found that has a matching pts with a gop in the list\n        // of gopsToAlignWith starting from the START of the list\n\n\n        this.alignGopsAtStart_ = function (gops) {\n          var alignIndex, gopIndex, align, gop, byteLength, nalCount, duration, alignedGops;\n          byteLength = gops.byteLength;\n          nalCount = gops.nalCount;\n          duration = gops.duration;\n          alignIndex = gopIndex = 0;\n\n          while (alignIndex < gopsToAlignWith.length && gopIndex < gops.length) {\n            align = gopsToAlignWith[alignIndex];\n            gop = gops[gopIndex];\n\n            if (align.pts === gop.pts) {\n              break;\n            }\n\n            if (gop.pts > align.pts) {\n              // this current gop starts after the current gop we want to align on, so increment\n              // align index\n              alignIndex++;\n              continue;\n            } // current gop starts before the current gop we want to align on. so increment gop\n            // index\n\n\n            gopIndex++;\n            byteLength -= gop.byteLength;\n            nalCount -= gop.nalCount;\n            duration -= gop.duration;\n          }\n\n          if (gopIndex === 0) {\n            // no gops to trim\n            return gops;\n          }\n\n          if (gopIndex === gops.length) {\n            // all gops trimmed, skip appending all gops\n            return null;\n          }\n\n          alignedGops = gops.slice(gopIndex);\n          alignedGops.byteLength = byteLength;\n          alignedGops.duration = duration;\n          alignedGops.nalCount = nalCount;\n          alignedGops.pts = alignedGops[0].pts;\n          alignedGops.dts = alignedGops[0].dts;\n          return alignedGops;\n        }; // trim gop list to the first gop found that has a matching pts with a gop in the list\n        // of gopsToAlignWith starting from the END of the list\n\n\n        this.alignGopsAtEnd_ = function (gops) {\n          var alignIndex, gopIndex, align, gop, alignEndIndex, matchFound;\n          alignIndex = gopsToAlignWith.length - 1;\n          gopIndex = gops.length - 1;\n          alignEndIndex = null;\n          matchFound = false;\n\n          while (alignIndex >= 0 && gopIndex >= 0) {\n            align = gopsToAlignWith[alignIndex];\n            gop = gops[gopIndex];\n\n            if (align.pts === gop.pts) {\n              matchFound = true;\n              break;\n            }\n\n            if (align.pts > gop.pts) {\n              alignIndex--;\n              continue;\n            }\n\n            if (alignIndex === gopsToAlignWith.length - 1) {\n              // gop.pts is greater than the last alignment candidate. If no match is found\n              // by the end of this loop, we still want to append gops that come after this\n              // point\n              alignEndIndex = gopIndex;\n            }\n\n            gopIndex--;\n          }\n\n          if (!matchFound && alignEndIndex === null) {\n            return null;\n          }\n\n          var trimIndex;\n\n          if (matchFound) {\n            trimIndex = gopIndex;\n          } else {\n            trimIndex = alignEndIndex;\n          }\n\n          if (trimIndex === 0) {\n            return gops;\n          }\n\n          var alignedGops = gops.slice(trimIndex);\n          var metadata = alignedGops.reduce(function (total, gop) {\n            total.byteLength += gop.byteLength;\n            total.duration += gop.duration;\n            total.nalCount += gop.nalCount;\n            return total;\n          }, {\n            byteLength: 0,\n            duration: 0,\n            nalCount: 0\n          });\n          alignedGops.byteLength = metadata.byteLength;\n          alignedGops.duration = metadata.duration;\n          alignedGops.nalCount = metadata.nalCount;\n          alignedGops.pts = alignedGops[0].pts;\n          alignedGops.dts = alignedGops[0].dts;\n          return alignedGops;\n        };\n\n        this.alignGopsWith = function (newGopsToAlignWith) {\n          gopsToAlignWith = newGopsToAlignWith;\n        };\n      };\n\n      _VideoSegmentStream.prototype = new stream();\n      /**\n       * A Stream that can combine multiple streams (ie. audio & video)\n       * into a single output segment for MSE. Also supports audio-only\n       * and video-only streams.\n       * @param options {object} transmuxer options object\n       * @param options.keepOriginalTimestamps {boolean} If true, keep the timestamps\n       *        in the source; false to adjust the first segment to start at media timeline start.\n       */\n\n      _CoalesceStream = function CoalesceStream(options, metadataStream) {\n        // Number of Tracks per output segment\n        // If greater than 1, we combine multiple\n        // tracks into a single segment\n        this.numberOfTracks = 0;\n        this.metadataStream = metadataStream;\n        options = options || {};\n\n        if (typeof options.remux !== 'undefined') {\n          this.remuxTracks = !!options.remux;\n        } else {\n          this.remuxTracks = true;\n        }\n\n        if (typeof options.keepOriginalTimestamps === 'boolean') {\n          this.keepOriginalTimestamps = options.keepOriginalTimestamps;\n        }\n\n        this.pendingTracks = [];\n        this.videoTrack = null;\n        this.pendingBoxes = [];\n        this.pendingCaptions = [];\n        this.pendingMetadata = [];\n        this.pendingBytes = 0;\n        this.emittedTracks = 0;\n\n        _CoalesceStream.prototype.init.call(this); // Take output from multiple\n\n\n        this.push = function (output) {\n          // buffer incoming captions until the associated video segment\n          // finishes\n          if (output.text) {\n            return this.pendingCaptions.push(output);\n          } // buffer incoming id3 tags until the final flush\n\n\n          if (output.frames) {\n            return this.pendingMetadata.push(output);\n          } // Add this track to the list of pending tracks and store\n          // important information required for the construction of\n          // the final segment\n\n\n          this.pendingTracks.push(output.track);\n          this.pendingBoxes.push(output.boxes);\n          this.pendingBytes += output.boxes.byteLength;\n\n          if (output.track.type === 'video') {\n            this.videoTrack = output.track;\n          }\n\n          if (output.track.type === 'audio') {\n            this.audioTrack = output.track;\n          }\n        };\n      };\n\n      _CoalesceStream.prototype = new stream();\n\n      _CoalesceStream.prototype.flush = function (flushSource) {\n        var offset = 0,\n            event = {\n          captions: [],\n          captionStreams: {},\n          metadata: [],\n          info: {}\n        },\n            caption,\n            id3,\n            initSegment,\n            timelineStartPts = 0,\n            i;\n\n        if (this.pendingTracks.length < this.numberOfTracks) {\n          if (flushSource !== 'VideoSegmentStream' && flushSource !== 'AudioSegmentStream') {\n            // Return because we haven't received a flush from a data-generating\n            // portion of the segment (meaning that we have only recieved meta-data\n            // or captions.)\n            return;\n          } else if (this.remuxTracks) {\n            // Return until we have enough tracks from the pipeline to remux (if we\n            // are remuxing audio and video into a single MP4)\n            return;\n          } else if (this.pendingTracks.length === 0) {\n            // In the case where we receive a flush without any data having been\n            // received we consider it an emitted track for the purposes of coalescing\n            // `done` events.\n            // We do this for the case where there is an audio and video track in the\n            // segment but no audio data. (seen in several playlists with alternate\n            // audio tracks and no audio present in the main TS segments.)\n            this.emittedTracks++;\n\n            if (this.emittedTracks >= this.numberOfTracks) {\n              this.trigger('done');\n              this.emittedTracks = 0;\n            }\n\n            return;\n          }\n        }\n\n        if (this.videoTrack) {\n          timelineStartPts = this.videoTrack.timelineStartInfo.pts;\n          VIDEO_PROPERTIES.forEach(function (prop) {\n            event.info[prop] = this.videoTrack[prop];\n          }, this);\n        } else if (this.audioTrack) {\n          timelineStartPts = this.audioTrack.timelineStartInfo.pts;\n          AUDIO_PROPERTIES.forEach(function (prop) {\n            event.info[prop] = this.audioTrack[prop];\n          }, this);\n        }\n\n        if (this.pendingTracks.length === 1) {\n          event.type = this.pendingTracks[0].type;\n        } else {\n          event.type = 'combined';\n        }\n\n        this.emittedTracks += this.pendingTracks.length;\n        initSegment = mp4Generator.initSegment(this.pendingTracks); // Create a new typed array to hold the init segment\n\n        event.initSegment = new Uint8Array(initSegment.byteLength); // Create an init segment containing a moov\n        // and track definitions\n\n        event.initSegment.set(initSegment); // Create a new typed array to hold the moof+mdats\n\n        event.data = new Uint8Array(this.pendingBytes); // Append each moof+mdat (one per track) together\n\n        for (i = 0; i < this.pendingBoxes.length; i++) {\n          event.data.set(this.pendingBoxes[i], offset);\n          offset += this.pendingBoxes[i].byteLength;\n        } // Translate caption PTS times into second offsets to match the\n        // video timeline for the segment, and add track info\n\n\n        for (i = 0; i < this.pendingCaptions.length; i++) {\n          caption = this.pendingCaptions[i];\n          caption.startTime = caption.startPts;\n\n          if (!this.keepOriginalTimestamps) {\n            caption.startTime -= timelineStartPts;\n          }\n\n          caption.startTime /= 90e3;\n          caption.endTime = caption.endPts;\n\n          if (!this.keepOriginalTimestamps) {\n            caption.endTime -= timelineStartPts;\n          }\n\n          caption.endTime /= 90e3;\n          event.captionStreams[caption.stream] = true;\n          event.captions.push(caption);\n        } // Translate ID3 frame PTS times into second offsets to match the\n        // video timeline for the segment\n\n\n        for (i = 0; i < this.pendingMetadata.length; i++) {\n          id3 = this.pendingMetadata[i];\n          id3.cueTime = id3.pts;\n\n          if (!this.keepOriginalTimestamps) {\n            id3.cueTime -= timelineStartPts;\n          }\n\n          id3.cueTime /= 90e3;\n          event.metadata.push(id3);\n        } // We add this to every single emitted segment even though we only need\n        // it for the first\n\n\n        event.metadata.dispatchType = this.metadataStream.dispatchType; // Reset stream state\n\n        this.pendingTracks.length = 0;\n        this.videoTrack = null;\n        this.pendingBoxes.length = 0;\n        this.pendingCaptions.length = 0;\n        this.pendingBytes = 0;\n        this.pendingMetadata.length = 0; // Emit the built segment\n\n        this.trigger('data', event); // Only emit `done` if all tracks have been flushed and emitted\n\n        if (this.emittedTracks >= this.numberOfTracks) {\n          this.trigger('done');\n          this.emittedTracks = 0;\n        }\n      };\n      /**\n       * A Stream that expects MP2T binary data as input and produces\n       * corresponding media segments, suitable for use with Media Source\n       * Extension (MSE) implementations that support the ISO BMFF byte\n       * stream format, like Chrome.\n       */\n\n\n      _Transmuxer = function Transmuxer(options) {\n        var self = this,\n            hasFlushed = true,\n            videoTrack,\n            audioTrack;\n\n        _Transmuxer.prototype.init.call(this);\n\n        options = options || {};\n        this.baseMediaDecodeTime = options.baseMediaDecodeTime || 0;\n        this.transmuxPipeline_ = {};\n\n        this.setupAacPipeline = function () {\n          var pipeline = {};\n          this.transmuxPipeline_ = pipeline;\n          pipeline.type = 'aac';\n          pipeline.metadataStream = new m2ts_1.MetadataStream(); // set up the parsing pipeline\n\n          pipeline.aacStream = new aac();\n          pipeline.audioTimestampRolloverStream = new m2ts_1.TimestampRolloverStream('audio');\n          pipeline.timedMetadataTimestampRolloverStream = new m2ts_1.TimestampRolloverStream('timed-metadata');\n          pipeline.adtsStream = new adts();\n          pipeline.coalesceStream = new _CoalesceStream(options, pipeline.metadataStream);\n          pipeline.headOfPipeline = pipeline.aacStream;\n          pipeline.aacStream.pipe(pipeline.audioTimestampRolloverStream).pipe(pipeline.adtsStream);\n          pipeline.aacStream.pipe(pipeline.timedMetadataTimestampRolloverStream).pipe(pipeline.metadataStream).pipe(pipeline.coalesceStream);\n          pipeline.metadataStream.on('timestamp', function (frame) {\n            pipeline.aacStream.setTimestamp(frame.timeStamp);\n          });\n          pipeline.aacStream.on('data', function (data) {\n            if (data.type === 'timed-metadata' && !pipeline.audioSegmentStream) {\n              audioTrack = audioTrack || {\n                timelineStartInfo: {\n                  baseMediaDecodeTime: self.baseMediaDecodeTime\n                },\n                codec: 'adts',\n                type: 'audio'\n              }; // hook up the audio segment stream to the first track with aac data\n\n              pipeline.coalesceStream.numberOfTracks++;\n              pipeline.audioSegmentStream = new _AudioSegmentStream(audioTrack, options); // Set up the final part of the audio pipeline\n\n              pipeline.adtsStream.pipe(pipeline.audioSegmentStream).pipe(pipeline.coalesceStream);\n            }\n          }); // Re-emit any data coming from the coalesce stream to the outside world\n\n          pipeline.coalesceStream.on('data', this.trigger.bind(this, 'data')); // Let the consumer know we have finished flushing the entire pipeline\n\n          pipeline.coalesceStream.on('done', this.trigger.bind(this, 'done'));\n        };\n\n        this.setupTsPipeline = function () {\n          var pipeline = {};\n          this.transmuxPipeline_ = pipeline;\n          pipeline.type = 'ts';\n          pipeline.metadataStream = new m2ts_1.MetadataStream(); // set up the parsing pipeline\n\n          pipeline.packetStream = new m2ts_1.TransportPacketStream();\n          pipeline.parseStream = new m2ts_1.TransportParseStream();\n          pipeline.elementaryStream = new m2ts_1.ElementaryStream();\n          pipeline.videoTimestampRolloverStream = new m2ts_1.TimestampRolloverStream('video');\n          pipeline.audioTimestampRolloverStream = new m2ts_1.TimestampRolloverStream('audio');\n          pipeline.timedMetadataTimestampRolloverStream = new m2ts_1.TimestampRolloverStream('timed-metadata');\n          pipeline.adtsStream = new adts();\n          pipeline.h264Stream = new H264Stream();\n          pipeline.captionStream = new m2ts_1.CaptionStream();\n          pipeline.coalesceStream = new _CoalesceStream(options, pipeline.metadataStream);\n          pipeline.headOfPipeline = pipeline.packetStream; // disassemble MPEG2-TS packets into elementary streams\n\n          pipeline.packetStream.pipe(pipeline.parseStream).pipe(pipeline.elementaryStream); // !!THIS ORDER IS IMPORTANT!!\n          // demux the streams\n\n          pipeline.elementaryStream.pipe(pipeline.videoTimestampRolloverStream).pipe(pipeline.h264Stream);\n          pipeline.elementaryStream.pipe(pipeline.audioTimestampRolloverStream).pipe(pipeline.adtsStream);\n          pipeline.elementaryStream.pipe(pipeline.timedMetadataTimestampRolloverStream).pipe(pipeline.metadataStream).pipe(pipeline.coalesceStream); // Hook up CEA-608/708 caption stream\n\n          pipeline.h264Stream.pipe(pipeline.captionStream).pipe(pipeline.coalesceStream);\n          pipeline.elementaryStream.on('data', function (data) {\n            var i;\n\n            if (data.type === 'metadata') {\n              i = data.tracks.length; // scan the tracks listed in the metadata\n\n              while (i--) {\n                if (!videoTrack && data.tracks[i].type === 'video') {\n                  videoTrack = data.tracks[i];\n                  videoTrack.timelineStartInfo.baseMediaDecodeTime = self.baseMediaDecodeTime;\n                } else if (!audioTrack && data.tracks[i].type === 'audio') {\n                  audioTrack = data.tracks[i];\n                  audioTrack.timelineStartInfo.baseMediaDecodeTime = self.baseMediaDecodeTime;\n                }\n              } // hook up the video segment stream to the first track with h264 data\n\n\n              if (videoTrack && !pipeline.videoSegmentStream) {\n                pipeline.coalesceStream.numberOfTracks++;\n                pipeline.videoSegmentStream = new _VideoSegmentStream(videoTrack, options);\n                pipeline.videoSegmentStream.on('timelineStartInfo', function (timelineStartInfo) {\n                  // When video emits timelineStartInfo data after a flush, we forward that\n                  // info to the AudioSegmentStream, if it exists, because video timeline\n                  // data takes precedence.\n                  if (audioTrack) {\n                    audioTrack.timelineStartInfo = timelineStartInfo; // On the first segment we trim AAC frames that exist before the\n                    // very earliest DTS we have seen in video because Chrome will\n                    // interpret any video track with a baseMediaDecodeTime that is\n                    // non-zero as a gap.\n\n                    pipeline.audioSegmentStream.setEarliestDts(timelineStartInfo.dts);\n                  }\n                });\n                pipeline.videoSegmentStream.on('processedGopsInfo', self.trigger.bind(self, 'gopInfo'));\n                pipeline.videoSegmentStream.on('baseMediaDecodeTime', function (baseMediaDecodeTime) {\n                  if (audioTrack) {\n                    pipeline.audioSegmentStream.setVideoBaseMediaDecodeTime(baseMediaDecodeTime);\n                  }\n                }); // Set up the final part of the video pipeline\n\n                pipeline.h264Stream.pipe(pipeline.videoSegmentStream).pipe(pipeline.coalesceStream);\n              }\n\n              if (audioTrack && !pipeline.audioSegmentStream) {\n                // hook up the audio segment stream to the first track with aac data\n                pipeline.coalesceStream.numberOfTracks++;\n                pipeline.audioSegmentStream = new _AudioSegmentStream(audioTrack, options); // Set up the final part of the audio pipeline\n\n                pipeline.adtsStream.pipe(pipeline.audioSegmentStream).pipe(pipeline.coalesceStream);\n              }\n            }\n          }); // Re-emit any data coming from the coalesce stream to the outside world\n\n          pipeline.coalesceStream.on('data', this.trigger.bind(this, 'data')); // Let the consumer know we have finished flushing the entire pipeline\n\n          pipeline.coalesceStream.on('done', this.trigger.bind(this, 'done'));\n        }; // hook up the segment streams once track metadata is delivered\n\n\n        this.setBaseMediaDecodeTime = function (baseMediaDecodeTime) {\n          var pipeline = this.transmuxPipeline_;\n\n          if (!options.keepOriginalTimestamps) {\n            this.baseMediaDecodeTime = baseMediaDecodeTime;\n          }\n\n          if (audioTrack) {\n            audioTrack.timelineStartInfo.dts = undefined;\n            audioTrack.timelineStartInfo.pts = undefined;\n            trackDecodeInfo.clearDtsInfo(audioTrack);\n\n            if (!options.keepOriginalTimestamps) {\n              audioTrack.timelineStartInfo.baseMediaDecodeTime = baseMediaDecodeTime;\n            }\n\n            if (pipeline.audioTimestampRolloverStream) {\n              pipeline.audioTimestampRolloverStream.discontinuity();\n            }\n          }\n\n          if (videoTrack) {\n            if (pipeline.videoSegmentStream) {\n              pipeline.videoSegmentStream.gopCache_ = [];\n              pipeline.videoTimestampRolloverStream.discontinuity();\n            }\n\n            videoTrack.timelineStartInfo.dts = undefined;\n            videoTrack.timelineStartInfo.pts = undefined;\n            trackDecodeInfo.clearDtsInfo(videoTrack);\n            pipeline.captionStream.reset();\n\n            if (!options.keepOriginalTimestamps) {\n              videoTrack.timelineStartInfo.baseMediaDecodeTime = baseMediaDecodeTime;\n            }\n          }\n\n          if (pipeline.timedMetadataTimestampRolloverStream) {\n            pipeline.timedMetadataTimestampRolloverStream.discontinuity();\n          }\n        };\n\n        this.setAudioAppendStart = function (timestamp) {\n          if (audioTrack) {\n            this.transmuxPipeline_.audioSegmentStream.setAudioAppendStart(timestamp);\n          }\n        };\n\n        this.alignGopsWith = function (gopsToAlignWith) {\n          if (videoTrack && this.transmuxPipeline_.videoSegmentStream) {\n            this.transmuxPipeline_.videoSegmentStream.alignGopsWith(gopsToAlignWith);\n          }\n        }; // feed incoming data to the front of the parsing pipeline\n\n\n        this.push = function (data) {\n          if (hasFlushed) {\n            var isAac = isLikelyAacData$1(data);\n\n            if (isAac && this.transmuxPipeline_.type !== 'aac') {\n              this.setupAacPipeline();\n            } else if (!isAac && this.transmuxPipeline_.type !== 'ts') {\n              this.setupTsPipeline();\n            }\n\n            hasFlushed = false;\n          }\n\n          this.transmuxPipeline_.headOfPipeline.push(data);\n        }; // flush any buffered data\n\n\n        this.flush = function () {\n          hasFlushed = true; // Start at the top of the pipeline and flush all pending work\n\n          this.transmuxPipeline_.headOfPipeline.flush();\n        }; // Caption data has to be reset when seeking outside buffered range\n\n\n        this.resetCaptions = function () {\n          if (this.transmuxPipeline_.captionStream) {\n            this.transmuxPipeline_.captionStream.reset();\n          }\n        };\n      };\n\n      _Transmuxer.prototype = new stream();\n      var transmuxer = {\n        Transmuxer: _Transmuxer,\n        VideoSegmentStream: _VideoSegmentStream,\n        AudioSegmentStream: _AudioSegmentStream,\n        AUDIO_PROPERTIES: AUDIO_PROPERTIES,\n        VIDEO_PROPERTIES: VIDEO_PROPERTIES\n      };\n\n      var inspectMp4,\n          _textifyMp,\n          parseType$2 = probe$$1.parseType,\n          parseMp4Date = function parseMp4Date(seconds) {\n        return new Date(seconds * 1000 - 2082844800000);\n      },\n          parseSampleFlags = function parseSampleFlags(flags) {\n        return {\n          isLeading: (flags[0] & 0x0c) >>> 2,\n          dependsOn: flags[0] & 0x03,\n          isDependedOn: (flags[1] & 0xc0) >>> 6,\n          hasRedundancy: (flags[1] & 0x30) >>> 4,\n          paddingValue: (flags[1] & 0x0e) >>> 1,\n          isNonSyncSample: flags[1] & 0x01,\n          degradationPriority: flags[2] << 8 | flags[3]\n        };\n      },\n          nalParse = function nalParse(avcStream) {\n        var avcView = new DataView(avcStream.buffer, avcStream.byteOffset, avcStream.byteLength),\n            result = [],\n            i,\n            length;\n\n        for (i = 0; i + 4 < avcStream.length; i += length) {\n          length = avcView.getUint32(i);\n          i += 4; // bail if this doesn't appear to be an H264 stream\n\n          if (length <= 0) {\n            result.push('<span style=\\'color:red;\\'>MALFORMED DATA</span>');\n            continue;\n          }\n\n          switch (avcStream[i] & 0x1F) {\n            case 0x01:\n              result.push('slice_layer_without_partitioning_rbsp');\n              break;\n\n            case 0x05:\n              result.push('slice_layer_without_partitioning_rbsp_idr');\n              break;\n\n            case 0x06:\n              result.push('sei_rbsp');\n              break;\n\n            case 0x07:\n              result.push('seq_parameter_set_rbsp');\n              break;\n\n            case 0x08:\n              result.push('pic_parameter_set_rbsp');\n              break;\n\n            case 0x09:\n              result.push('access_unit_delimiter_rbsp');\n              break;\n\n            default:\n              result.push('UNKNOWN NAL - ' + avcStream[i] & 0x1F);\n              break;\n          }\n        }\n\n        return result;\n      },\n          // registry of handlers for individual mp4 box types\n      parse$$1 = {\n        // codingname, not a first-class box type. stsd entries share the\n        // same format as real boxes so the parsing infrastructure can be\n        // shared\n        avc1: function avc1(data) {\n          var view = new DataView(data.buffer, data.byteOffset, data.byteLength);\n          return {\n            dataReferenceIndex: view.getUint16(6),\n            width: view.getUint16(24),\n            height: view.getUint16(26),\n            horizresolution: view.getUint16(28) + view.getUint16(30) / 16,\n            vertresolution: view.getUint16(32) + view.getUint16(34) / 16,\n            frameCount: view.getUint16(40),\n            depth: view.getUint16(74),\n            config: inspectMp4(data.subarray(78, data.byteLength))\n          };\n        },\n        avcC: function avcC(data) {\n          var view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n              result = {\n            configurationVersion: data[0],\n            avcProfileIndication: data[1],\n            profileCompatibility: data[2],\n            avcLevelIndication: data[3],\n            lengthSizeMinusOne: data[4] & 0x03,\n            sps: [],\n            pps: []\n          },\n              numOfSequenceParameterSets = data[5] & 0x1f,\n              numOfPictureParameterSets,\n              nalSize,\n              offset,\n              i; // iterate past any SPSs\n\n          offset = 6;\n\n          for (i = 0; i < numOfSequenceParameterSets; i++) {\n            nalSize = view.getUint16(offset);\n            offset += 2;\n            result.sps.push(new Uint8Array(data.subarray(offset, offset + nalSize)));\n            offset += nalSize;\n          } // iterate past any PPSs\n\n\n          numOfPictureParameterSets = data[offset];\n          offset++;\n\n          for (i = 0; i < numOfPictureParameterSets; i++) {\n            nalSize = view.getUint16(offset);\n            offset += 2;\n            result.pps.push(new Uint8Array(data.subarray(offset, offset + nalSize)));\n            offset += nalSize;\n          }\n\n          return result;\n        },\n        btrt: function btrt(data) {\n          var view = new DataView(data.buffer, data.byteOffset, data.byteLength);\n          return {\n            bufferSizeDB: view.getUint32(0),\n            maxBitrate: view.getUint32(4),\n            avgBitrate: view.getUint32(8)\n          };\n        },\n        esds: function esds(data) {\n          return {\n            version: data[0],\n            flags: new Uint8Array(data.subarray(1, 4)),\n            esId: data[6] << 8 | data[7],\n            streamPriority: data[8] & 0x1f,\n            decoderConfig: {\n              objectProfileIndication: data[11],\n              streamType: data[12] >>> 2 & 0x3f,\n              bufferSize: data[13] << 16 | data[14] << 8 | data[15],\n              maxBitrate: data[16] << 24 | data[17] << 16 | data[18] << 8 | data[19],\n              avgBitrate: data[20] << 24 | data[21] << 16 | data[22] << 8 | data[23],\n              decoderConfigDescriptor: {\n                tag: data[24],\n                length: data[25],\n                audioObjectType: data[26] >>> 3 & 0x1f,\n                samplingFrequencyIndex: (data[26] & 0x07) << 1 | data[27] >>> 7 & 0x01,\n                channelConfiguration: data[27] >>> 3 & 0x0f\n              }\n            }\n          };\n        },\n        ftyp: function ftyp(data) {\n          var view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n              result = {\n            majorBrand: parseType$2(data.subarray(0, 4)),\n            minorVersion: view.getUint32(4),\n            compatibleBrands: []\n          },\n              i = 8;\n\n          while (i < data.byteLength) {\n            result.compatibleBrands.push(parseType$2(data.subarray(i, i + 4)));\n            i += 4;\n          }\n\n          return result;\n        },\n        dinf: function dinf(data) {\n          return {\n            boxes: inspectMp4(data)\n          };\n        },\n        dref: function dref(data) {\n          return {\n            version: data[0],\n            flags: new Uint8Array(data.subarray(1, 4)),\n            dataReferences: inspectMp4(data.subarray(8))\n          };\n        },\n        hdlr: function hdlr(data) {\n          var view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n              result = {\n            version: view.getUint8(0),\n            flags: new Uint8Array(data.subarray(1, 4)),\n            handlerType: parseType$2(data.subarray(8, 12)),\n            name: ''\n          },\n              i = 8; // parse out the name field\n\n          for (i = 24; i < data.byteLength; i++) {\n            if (data[i] === 0x00) {\n              // the name field is null-terminated\n              i++;\n              break;\n            }\n\n            result.name += String.fromCharCode(data[i]);\n          } // decode UTF-8 to javascript's internal representation\n          // see http://ecmanaut.blogspot.com/2006/07/encoding-decoding-utf8-in-javascript.html\n\n\n          result.name = decodeURIComponent(escape(result.name));\n          return result;\n        },\n        mdat: function mdat(data) {\n          return {\n            byteLength: data.byteLength,\n            nals: nalParse(data)\n          };\n        },\n        mdhd: function mdhd(data) {\n          var view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n              i = 4,\n              language,\n              result = {\n            version: view.getUint8(0),\n            flags: new Uint8Array(data.subarray(1, 4)),\n            language: ''\n          };\n\n          if (result.version === 1) {\n            i += 4;\n            result.creationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes\n\n            i += 8;\n            result.modificationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes\n\n            i += 4;\n            result.timescale = view.getUint32(i);\n            i += 8;\n            result.duration = view.getUint32(i); // truncating top 4 bytes\n          } else {\n            result.creationTime = parseMp4Date(view.getUint32(i));\n            i += 4;\n            result.modificationTime = parseMp4Date(view.getUint32(i));\n            i += 4;\n            result.timescale = view.getUint32(i);\n            i += 4;\n            result.duration = view.getUint32(i);\n          }\n\n          i += 4; // language is stored as an ISO-639-2/T code in an array of three 5-bit fields\n          // each field is the packed difference between its ASCII value and 0x60\n\n          language = view.getUint16(i);\n          result.language += String.fromCharCode((language >> 10) + 0x60);\n          result.language += String.fromCharCode(((language & 0x03e0) >> 5) + 0x60);\n          result.language += String.fromCharCode((language & 0x1f) + 0x60);\n          return result;\n        },\n        mdia: function mdia(data) {\n          return {\n            boxes: inspectMp4(data)\n          };\n        },\n        mfhd: function mfhd(data) {\n          return {\n            version: data[0],\n            flags: new Uint8Array(data.subarray(1, 4)),\n            sequenceNumber: data[4] << 24 | data[5] << 16 | data[6] << 8 | data[7]\n          };\n        },\n        minf: function minf(data) {\n          return {\n            boxes: inspectMp4(data)\n          };\n        },\n        // codingname, not a first-class box type. stsd entries share the\n        // same format as real boxes so the parsing infrastructure can be\n        // shared\n        mp4a: function mp4a(data) {\n          var view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n              result = {\n            // 6 bytes reserved\n            dataReferenceIndex: view.getUint16(6),\n            // 4 + 4 bytes reserved\n            channelcount: view.getUint16(16),\n            samplesize: view.getUint16(18),\n            // 2 bytes pre_defined\n            // 2 bytes reserved\n            samplerate: view.getUint16(24) + view.getUint16(26) / 65536\n          }; // if there are more bytes to process, assume this is an ISO/IEC\n          // 14496-14 MP4AudioSampleEntry and parse the ESDBox\n\n          if (data.byteLength > 28) {\n            result.streamDescriptor = inspectMp4(data.subarray(28))[0];\n          }\n\n          return result;\n        },\n        moof: function moof(data) {\n          return {\n            boxes: inspectMp4(data)\n          };\n        },\n        moov: function moov(data) {\n          return {\n            boxes: inspectMp4(data)\n          };\n        },\n        mvex: function mvex(data) {\n          return {\n            boxes: inspectMp4(data)\n          };\n        },\n        mvhd: function mvhd(data) {\n          var view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n              i = 4,\n              result = {\n            version: view.getUint8(0),\n            flags: new Uint8Array(data.subarray(1, 4))\n          };\n\n          if (result.version === 1) {\n            i += 4;\n            result.creationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes\n\n            i += 8;\n            result.modificationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes\n\n            i += 4;\n            result.timescale = view.getUint32(i);\n            i += 8;\n            result.duration = view.getUint32(i); // truncating top 4 bytes\n          } else {\n            result.creationTime = parseMp4Date(view.getUint32(i));\n            i += 4;\n            result.modificationTime = parseMp4Date(view.getUint32(i));\n            i += 4;\n            result.timescale = view.getUint32(i);\n            i += 4;\n            result.duration = view.getUint32(i);\n          }\n\n          i += 4; // convert fixed-point, base 16 back to a number\n\n          result.rate = view.getUint16(i) + view.getUint16(i + 2) / 16;\n          i += 4;\n          result.volume = view.getUint8(i) + view.getUint8(i + 1) / 8;\n          i += 2;\n          i += 2;\n          i += 2 * 4;\n          result.matrix = new Uint32Array(data.subarray(i, i + 9 * 4));\n          i += 9 * 4;\n          i += 6 * 4;\n          result.nextTrackId = view.getUint32(i);\n          return result;\n        },\n        pdin: function pdin(data) {\n          var view = new DataView(data.buffer, data.byteOffset, data.byteLength);\n          return {\n            version: view.getUint8(0),\n            flags: new Uint8Array(data.subarray(1, 4)),\n            rate: view.getUint32(4),\n            initialDelay: view.getUint32(8)\n          };\n        },\n        sdtp: function sdtp(data) {\n          var result = {\n            version: data[0],\n            flags: new Uint8Array(data.subarray(1, 4)),\n            samples: []\n          },\n              i;\n\n          for (i = 4; i < data.byteLength; i++) {\n            result.samples.push({\n              dependsOn: (data[i] & 0x30) >> 4,\n              isDependedOn: (data[i] & 0x0c) >> 2,\n              hasRedundancy: data[i] & 0x03\n            });\n          }\n\n          return result;\n        },\n        sidx: function sidx(data) {\n          var view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n              result = {\n            version: data[0],\n            flags: new Uint8Array(data.subarray(1, 4)),\n            references: [],\n            referenceId: view.getUint32(4),\n            timescale: view.getUint32(8),\n            earliestPresentationTime: view.getUint32(12),\n            firstOffset: view.getUint32(16)\n          },\n              referenceCount = view.getUint16(22),\n              i;\n\n          for (i = 24; referenceCount; i += 12, referenceCount--) {\n            result.references.push({\n              referenceType: (data[i] & 0x80) >>> 7,\n              referencedSize: view.getUint32(i) & 0x7FFFFFFF,\n              subsegmentDuration: view.getUint32(i + 4),\n              startsWithSap: !!(data[i + 8] & 0x80),\n              sapType: (data[i + 8] & 0x70) >>> 4,\n              sapDeltaTime: view.getUint32(i + 8) & 0x0FFFFFFF\n            });\n          }\n\n          return result;\n        },\n        smhd: function smhd(data) {\n          return {\n            version: data[0],\n            flags: new Uint8Array(data.subarray(1, 4)),\n            balance: data[4] + data[5] / 256\n          };\n        },\n        stbl: function stbl(data) {\n          return {\n            boxes: inspectMp4(data)\n          };\n        },\n        stco: function stco(data) {\n          var view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n              result = {\n            version: data[0],\n            flags: new Uint8Array(data.subarray(1, 4)),\n            chunkOffsets: []\n          },\n              entryCount = view.getUint32(4),\n              i;\n\n          for (i = 8; entryCount; i += 4, entryCount--) {\n            result.chunkOffsets.push(view.getUint32(i));\n          }\n\n          return result;\n        },\n        stsc: function stsc(data) {\n          var view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n              entryCount = view.getUint32(4),\n              result = {\n            version: data[0],\n            flags: new Uint8Array(data.subarray(1, 4)),\n            sampleToChunks: []\n          },\n              i;\n\n          for (i = 8; entryCount; i += 12, entryCount--) {\n            result.sampleToChunks.push({\n              firstChunk: view.getUint32(i),\n              samplesPerChunk: view.getUint32(i + 4),\n              sampleDescriptionIndex: view.getUint32(i + 8)\n            });\n          }\n\n          return result;\n        },\n        stsd: function stsd(data) {\n          return {\n            version: data[0],\n            flags: new Uint8Array(data.subarray(1, 4)),\n            sampleDescriptions: inspectMp4(data.subarray(8))\n          };\n        },\n        stsz: function stsz(data) {\n          var view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n              result = {\n            version: data[0],\n            flags: new Uint8Array(data.subarray(1, 4)),\n            sampleSize: view.getUint32(4),\n            entries: []\n          },\n              i;\n\n          for (i = 12; i < data.byteLength; i += 4) {\n            result.entries.push(view.getUint32(i));\n          }\n\n          return result;\n        },\n        stts: function stts(data) {\n          var view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n              result = {\n            version: data[0],\n            flags: new Uint8Array(data.subarray(1, 4)),\n            timeToSamples: []\n          },\n              entryCount = view.getUint32(4),\n              i;\n\n          for (i = 8; entryCount; i += 8, entryCount--) {\n            result.timeToSamples.push({\n              sampleCount: view.getUint32(i),\n              sampleDelta: view.getUint32(i + 4)\n            });\n          }\n\n          return result;\n        },\n        styp: function styp(data) {\n          return parse$$1.ftyp(data);\n        },\n        tfdt: function tfdt(data) {\n          var result = {\n            version: data[0],\n            flags: new Uint8Array(data.subarray(1, 4)),\n            baseMediaDecodeTime: data[4] << 24 | data[5] << 16 | data[6] << 8 | data[7]\n          };\n\n          if (result.version === 1) {\n            result.baseMediaDecodeTime *= Math.pow(2, 32);\n            result.baseMediaDecodeTime += data[8] << 24 | data[9] << 16 | data[10] << 8 | data[11];\n          }\n\n          return result;\n        },\n        tfhd: function tfhd(data) {\n          var view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n              result = {\n            version: data[0],\n            flags: new Uint8Array(data.subarray(1, 4)),\n            trackId: view.getUint32(4)\n          },\n              baseDataOffsetPresent = result.flags[2] & 0x01,\n              sampleDescriptionIndexPresent = result.flags[2] & 0x02,\n              defaultSampleDurationPresent = result.flags[2] & 0x08,\n              defaultSampleSizePresent = result.flags[2] & 0x10,\n              defaultSampleFlagsPresent = result.flags[2] & 0x20,\n              durationIsEmpty = result.flags[0] & 0x010000,\n              defaultBaseIsMoof = result.flags[0] & 0x020000,\n              i;\n          i = 8;\n\n          if (baseDataOffsetPresent) {\n            i += 4; // truncate top 4 bytes\n            // FIXME: should we read the full 64 bits?\n\n            result.baseDataOffset = view.getUint32(12);\n            i += 4;\n          }\n\n          if (sampleDescriptionIndexPresent) {\n            result.sampleDescriptionIndex = view.getUint32(i);\n            i += 4;\n          }\n\n          if (defaultSampleDurationPresent) {\n            result.defaultSampleDuration = view.getUint32(i);\n            i += 4;\n          }\n\n          if (defaultSampleSizePresent) {\n            result.defaultSampleSize = view.getUint32(i);\n            i += 4;\n          }\n\n          if (defaultSampleFlagsPresent) {\n            result.defaultSampleFlags = view.getUint32(i);\n          }\n\n          if (durationIsEmpty) {\n            result.durationIsEmpty = true;\n          }\n\n          if (!baseDataOffsetPresent && defaultBaseIsMoof) {\n            result.baseDataOffsetIsMoof = true;\n          }\n\n          return result;\n        },\n        tkhd: function tkhd(data) {\n          var view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n              i = 4,\n              result = {\n            version: view.getUint8(0),\n            flags: new Uint8Array(data.subarray(1, 4))\n          };\n\n          if (result.version === 1) {\n            i += 4;\n            result.creationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes\n\n            i += 8;\n            result.modificationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes\n\n            i += 4;\n            result.trackId = view.getUint32(i);\n            i += 4;\n            i += 8;\n            result.duration = view.getUint32(i); // truncating top 4 bytes\n          } else {\n            result.creationTime = parseMp4Date(view.getUint32(i));\n            i += 4;\n            result.modificationTime = parseMp4Date(view.getUint32(i));\n            i += 4;\n            result.trackId = view.getUint32(i);\n            i += 4;\n            i += 4;\n            result.duration = view.getUint32(i);\n          }\n\n          i += 4;\n          i += 2 * 4;\n          result.layer = view.getUint16(i);\n          i += 2;\n          result.alternateGroup = view.getUint16(i);\n          i += 2; // convert fixed-point, base 16 back to a number\n\n          result.volume = view.getUint8(i) + view.getUint8(i + 1) / 8;\n          i += 2;\n          i += 2;\n          result.matrix = new Uint32Array(data.subarray(i, i + 9 * 4));\n          i += 9 * 4;\n          result.width = view.getUint16(i) + view.getUint16(i + 2) / 16;\n          i += 4;\n          result.height = view.getUint16(i) + view.getUint16(i + 2) / 16;\n          return result;\n        },\n        traf: function traf(data) {\n          return {\n            boxes: inspectMp4(data)\n          };\n        },\n        trak: function trak(data) {\n          return {\n            boxes: inspectMp4(data)\n          };\n        },\n        trex: function trex(data) {\n          var view = new DataView(data.buffer, data.byteOffset, data.byteLength);\n          return {\n            version: data[0],\n            flags: new Uint8Array(data.subarray(1, 4)),\n            trackId: view.getUint32(4),\n            defaultSampleDescriptionIndex: view.getUint32(8),\n            defaultSampleDuration: view.getUint32(12),\n            defaultSampleSize: view.getUint32(16),\n            sampleDependsOn: data[20] & 0x03,\n            sampleIsDependedOn: (data[21] & 0xc0) >> 6,\n            sampleHasRedundancy: (data[21] & 0x30) >> 4,\n            samplePaddingValue: (data[21] & 0x0e) >> 1,\n            sampleIsDifferenceSample: !!(data[21] & 0x01),\n            sampleDegradationPriority: view.getUint16(22)\n          };\n        },\n        trun: function trun(data) {\n          var result = {\n            version: data[0],\n            flags: new Uint8Array(data.subarray(1, 4)),\n            samples: []\n          },\n              view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n              // Flag interpretation\n          dataOffsetPresent = result.flags[2] & 0x01,\n              // compare with 2nd byte of 0x1\n          firstSampleFlagsPresent = result.flags[2] & 0x04,\n              // compare with 2nd byte of 0x4\n          sampleDurationPresent = result.flags[1] & 0x01,\n              // compare with 2nd byte of 0x100\n          sampleSizePresent = result.flags[1] & 0x02,\n              // compare with 2nd byte of 0x200\n          sampleFlagsPresent = result.flags[1] & 0x04,\n              // compare with 2nd byte of 0x400\n          sampleCompositionTimeOffsetPresent = result.flags[1] & 0x08,\n              // compare with 2nd byte of 0x800\n          sampleCount = view.getUint32(4),\n              offset = 8,\n              sample;\n\n          if (dataOffsetPresent) {\n            // 32 bit signed integer\n            result.dataOffset = view.getInt32(offset);\n            offset += 4;\n          } // Overrides the flags for the first sample only. The order of\n          // optional values will be: duration, size, compositionTimeOffset\n\n\n          if (firstSampleFlagsPresent && sampleCount) {\n            sample = {\n              flags: parseSampleFlags(data.subarray(offset, offset + 4))\n            };\n            offset += 4;\n\n            if (sampleDurationPresent) {\n              sample.duration = view.getUint32(offset);\n              offset += 4;\n            }\n\n            if (sampleSizePresent) {\n              sample.size = view.getUint32(offset);\n              offset += 4;\n            }\n\n            if (sampleCompositionTimeOffsetPresent) {\n              // Note: this should be a signed int if version is 1\n              sample.compositionTimeOffset = view.getUint32(offset);\n              offset += 4;\n            }\n\n            result.samples.push(sample);\n            sampleCount--;\n          }\n\n          while (sampleCount--) {\n            sample = {};\n\n            if (sampleDurationPresent) {\n              sample.duration = view.getUint32(offset);\n              offset += 4;\n            }\n\n            if (sampleSizePresent) {\n              sample.size = view.getUint32(offset);\n              offset += 4;\n            }\n\n            if (sampleFlagsPresent) {\n              sample.flags = parseSampleFlags(data.subarray(offset, offset + 4));\n              offset += 4;\n            }\n\n            if (sampleCompositionTimeOffsetPresent) {\n              // Note: this should be a signed int if version is 1\n              sample.compositionTimeOffset = view.getUint32(offset);\n              offset += 4;\n            }\n\n            result.samples.push(sample);\n          }\n\n          return result;\n        },\n        'url ': function url(data) {\n          return {\n            version: data[0],\n            flags: new Uint8Array(data.subarray(1, 4))\n          };\n        },\n        vmhd: function vmhd(data) {\n          var view = new DataView(data.buffer, data.byteOffset, data.byteLength);\n          return {\n            version: data[0],\n            flags: new Uint8Array(data.subarray(1, 4)),\n            graphicsmode: view.getUint16(4),\n            opcolor: new Uint16Array([view.getUint16(6), view.getUint16(8), view.getUint16(10)])\n          };\n        }\n      };\n      /**\n       * Return a javascript array of box objects parsed from an ISO base\n       * media file.\n       * @param data {Uint8Array} the binary data of the media to be inspected\n       * @return {array} a javascript array of potentially nested box objects\n       */\n\n\n      inspectMp4 = function inspectMp4(data) {\n        var i = 0,\n            result = [],\n            view,\n            size,\n            type,\n            end,\n            box; // Convert data from Uint8Array to ArrayBuffer, to follow Dataview API\n\n        var ab = new ArrayBuffer(data.length);\n        var v = new Uint8Array(ab);\n\n        for (var z = 0; z < data.length; ++z) {\n          v[z] = data[z];\n        }\n\n        view = new DataView(ab);\n\n        while (i < data.byteLength) {\n          // parse box data\n          size = view.getUint32(i);\n          type = parseType$2(data.subarray(i + 4, i + 8));\n          end = size > 1 ? i + size : data.byteLength; // parse type-specific data\n\n          box = (parse$$1[type] || function (data) {\n            return {\n              data: data\n            };\n          })(data.subarray(i + 8, end));\n\n          box.size = size;\n          box.type = type; // store this box and move to the next\n\n          result.push(box);\n          i = end;\n        }\n\n        return result;\n      };\n      /**\n       * Returns a textual representation of the javascript represtentation\n       * of an MP4 file. You can use it as an alternative to\n       * JSON.stringify() to compare inspected MP4s.\n       * @param inspectedMp4 {array} the parsed array of boxes in an MP4\n       * file\n       * @param depth {number} (optional) the number of ancestor boxes of\n       * the elements of inspectedMp4. Assumed to be zero if unspecified.\n       * @return {string} a text representation of the parsed MP4\n       */\n\n\n      _textifyMp = function textifyMp4(inspectedMp4, depth) {\n        var indent;\n        depth = depth || 0;\n        indent = new Array(depth * 2 + 1).join(' '); // iterate over all the boxes\n\n        return inspectedMp4.map(function (box, index) {\n          // list the box type first at the current indentation level\n          return indent + box.type + '\\n' + // the type is already included and handle child boxes separately\n          Object.keys(box).filter(function (key) {\n            return key !== 'type' && key !== 'boxes'; // output all the box properties\n          }).map(function (key) {\n            var prefix = indent + '  ' + key + ': ',\n                value = box[key]; // print out raw bytes as hexademical\n\n            if (value instanceof Uint8Array || value instanceof Uint32Array) {\n              var bytes = Array.prototype.slice.call(new Uint8Array(value.buffer, value.byteOffset, value.byteLength)).map(function (byte) {\n                return ' ' + ('00' + byte.toString(16)).slice(-2);\n              }).join('').match(/.{1,24}/g);\n\n              if (!bytes) {\n                return prefix + '<>';\n              }\n\n              if (bytes.length === 1) {\n                return prefix + '<' + bytes.join('').slice(1) + '>';\n              }\n\n              return prefix + '<\\n' + bytes.map(function (line) {\n                return indent + '  ' + line;\n              }).join('\\n') + '\\n' + indent + '  >';\n            } // stringify generic objects\n\n\n            return prefix + JSON.stringify(value, null, 2).split('\\n').map(function (line, index) {\n              if (index === 0) {\n                return line;\n              }\n\n              return indent + '  ' + line;\n            }).join('\\n');\n          }).join('\\n') + ( // recursively textify the child boxes\n          box.boxes ? '\\n' + _textifyMp(box.boxes, depth + 1) : '');\n        }).join('\\n');\n      };\n\n      var mp4Inspector = {\n        inspect: inspectMp4,\n        textify: _textifyMp,\n        parseTfdt: parse$$1.tfdt,\n        parseHdlr: parse$$1.hdlr,\n        parseTfhd: parse$$1.tfhd,\n        parseTrun: parse$$1.trun\n      };\n      var discardEmulationPreventionBytes$1 = captionPacketParser.discardEmulationPreventionBytes;\n      var CaptionStream$1 = captionStream.CaptionStream;\n      /**\n        * Maps an offset in the mdat to a sample based on the the size of the samples.\n        * Assumes that `parseSamples` has been called first.\n        *\n        * @param {Number} offset - The offset into the mdat\n        * @param {Object[]} samples - An array of samples, parsed using `parseSamples`\n        * @return {?Object} The matching sample, or null if no match was found.\n        *\n        * @see ISO-BMFF-12/2015, Section 8.8.8\n       **/\n\n      var mapToSample = function mapToSample(offset, samples) {\n        var approximateOffset = offset;\n\n        for (var i = 0; i < samples.length; i++) {\n          var sample = samples[i];\n\n          if (approximateOffset < sample.size) {\n            return sample;\n          }\n\n          approximateOffset -= sample.size;\n        }\n\n        return null;\n      };\n      /**\n        * Finds SEI nal units contained in a Media Data Box.\n        * Assumes that `parseSamples` has been called first.\n        *\n        * @param {Uint8Array} avcStream - The bytes of the mdat\n        * @param {Object[]} samples - The samples parsed out by `parseSamples`\n        * @param {Number} trackId - The trackId of this video track\n        * @return {Object[]} seiNals - the parsed SEI NALUs found.\n        *   The contents of the seiNal should match what is expected by\n        *   CaptionStream.push (nalUnitType, size, data, escapedRBSP, pts, dts)\n        *\n        * @see ISO-BMFF-12/2015, Section 8.1.1\n        * @see Rec. ITU-T H.264, 7.3.2.3.1\n       **/\n\n\n      var findSeiNals = function findSeiNals(avcStream, samples, trackId) {\n        var avcView = new DataView(avcStream.buffer, avcStream.byteOffset, avcStream.byteLength),\n            result = [],\n            seiNal,\n            i,\n            length,\n            lastMatchedSample;\n\n        for (i = 0; i + 4 < avcStream.length; i += length) {\n          length = avcView.getUint32(i);\n          i += 4; // Bail if this doesn't appear to be an H264 stream\n\n          if (length <= 0) {\n            continue;\n          }\n\n          switch (avcStream[i] & 0x1F) {\n            case 0x06:\n              var data = avcStream.subarray(i + 1, i + 1 + length);\n              var matchingSample = mapToSample(i, samples);\n              seiNal = {\n                nalUnitType: 'sei_rbsp',\n                size: length,\n                data: data,\n                escapedRBSP: discardEmulationPreventionBytes$1(data),\n                trackId: trackId\n              };\n\n              if (matchingSample) {\n                seiNal.pts = matchingSample.pts;\n                seiNal.dts = matchingSample.dts;\n                lastMatchedSample = matchingSample;\n              } else {\n                // If a matching sample cannot be found, use the last\n                // sample's values as they should be as close as possible\n                seiNal.pts = lastMatchedSample.pts;\n                seiNal.dts = lastMatchedSample.dts;\n              }\n\n              result.push(seiNal);\n              break;\n\n            default:\n              break;\n          }\n        }\n\n        return result;\n      };\n      /**\n        * Parses sample information out of Track Run Boxes and calculates\n        * the absolute presentation and decode timestamps of each sample.\n        *\n        * @param {Array<Uint8Array>} truns - The Trun Run boxes to be parsed\n        * @param {Number} baseMediaDecodeTime - base media decode time from tfdt\n            @see ISO-BMFF-12/2015, Section 8.8.12\n        * @param {Object} tfhd - The parsed Track Fragment Header\n        *   @see inspect.parseTfhd\n        * @return {Object[]} the parsed samples\n        *\n        * @see ISO-BMFF-12/2015, Section 8.8.8\n       **/\n\n\n      var parseSamples = function parseSamples(truns, baseMediaDecodeTime, tfhd) {\n        var currentDts = baseMediaDecodeTime;\n        var defaultSampleDuration = tfhd.defaultSampleDuration || 0;\n        var defaultSampleSize = tfhd.defaultSampleSize || 0;\n        var trackId = tfhd.trackId;\n        var allSamples = [];\n        truns.forEach(function (trun) {\n          // Note: We currently do not parse the sample table as well\n          // as the trun. It's possible some sources will require this.\n          // moov > trak > mdia > minf > stbl\n          var trackRun = mp4Inspector.parseTrun(trun);\n          var samples = trackRun.samples;\n          samples.forEach(function (sample) {\n            if (sample.duration === undefined) {\n              sample.duration = defaultSampleDuration;\n            }\n\n            if (sample.size === undefined) {\n              sample.size = defaultSampleSize;\n            }\n\n            sample.trackId = trackId;\n            sample.dts = currentDts;\n\n            if (sample.compositionTimeOffset === undefined) {\n              sample.compositionTimeOffset = 0;\n            }\n\n            sample.pts = currentDts + sample.compositionTimeOffset;\n            currentDts += sample.duration;\n          });\n          allSamples = allSamples.concat(samples);\n        });\n        return allSamples;\n      };\n      /**\n        * Parses out caption nals from an FMP4 segment's video tracks.\n        *\n        * @param {Uint8Array} segment - The bytes of a single segment\n        * @param {Number} videoTrackId - The trackId of a video track in the segment\n        * @return {Object.<Number, Object[]>} A mapping of video trackId to\n        *   a list of seiNals found in that track\n       **/\n\n\n      var parseCaptionNals = function parseCaptionNals(segment, videoTrackId) {\n        // To get the samples\n        var trafs = probe$$1.findBox(segment, ['moof', 'traf']); // To get SEI NAL units\n\n        var mdats = probe$$1.findBox(segment, ['mdat']);\n        var captionNals = {};\n        var mdatTrafPairs = []; // Pair up each traf with a mdat as moofs and mdats are in pairs\n\n        mdats.forEach(function (mdat, index) {\n          var matchingTraf = trafs[index];\n          mdatTrafPairs.push({\n            mdat: mdat,\n            traf: matchingTraf\n          });\n        });\n        mdatTrafPairs.forEach(function (pair) {\n          var mdat = pair.mdat;\n          var traf = pair.traf;\n          var tfhd = probe$$1.findBox(traf, ['tfhd']); // Exactly 1 tfhd per traf\n\n          var headerInfo = mp4Inspector.parseTfhd(tfhd[0]);\n          var trackId = headerInfo.trackId;\n          var tfdt = probe$$1.findBox(traf, ['tfdt']); // Either 0 or 1 tfdt per traf\n\n          var baseMediaDecodeTime = tfdt.length > 0 ? mp4Inspector.parseTfdt(tfdt[0]).baseMediaDecodeTime : 0;\n          var truns = probe$$1.findBox(traf, ['trun']);\n          var samples;\n          var seiNals; // Only parse video data for the chosen video track\n\n          if (videoTrackId === trackId && truns.length > 0) {\n            samples = parseSamples(truns, baseMediaDecodeTime, headerInfo);\n            seiNals = findSeiNals(mdat, samples, trackId);\n\n            if (!captionNals[trackId]) {\n              captionNals[trackId] = [];\n            }\n\n            captionNals[trackId] = captionNals[trackId].concat(seiNals);\n          }\n        });\n        return captionNals;\n      };\n      /**\n        * Parses out inband captions from an MP4 container and returns\n        * caption objects that can be used by WebVTT and the TextTrack API.\n        * @see https://developer.mozilla.org/en-US/docs/Web/API/VTTCue\n        * @see https://developer.mozilla.org/en-US/docs/Web/API/TextTrack\n        * Assumes that `probe.getVideoTrackIds` and `probe.timescale` have been called first\n        *\n        * @param {Uint8Array} segment - The fmp4 segment containing embedded captions\n        * @param {Number} trackId - The id of the video track to parse\n        * @param {Number} timescale - The timescale for the video track from the init segment\n        *\n        * @return {?Object[]} parsedCaptions - A list of captions or null if no video tracks\n        * @return {Number} parsedCaptions[].startTime - The time to show the caption in seconds\n        * @return {Number} parsedCaptions[].endTime - The time to stop showing the caption in seconds\n        * @return {String} parsedCaptions[].text - The visible content of the caption\n       **/\n\n\n      var parseEmbeddedCaptions = function parseEmbeddedCaptions(segment, trackId, timescale) {\n        var seiNals;\n\n        if (!trackId) {\n          return null;\n        }\n\n        seiNals = parseCaptionNals(segment, trackId);\n        return {\n          seiNals: seiNals[trackId],\n          timescale: timescale\n        };\n      };\n      /**\n        * Converts SEI NALUs into captions that can be used by video.js\n       **/\n\n\n      var CaptionParser$$1 = function CaptionParser$$1() {\n        var isInitialized = false;\n        var captionStream$$1; // Stores segments seen before trackId and timescale are set\n\n        var segmentCache; // Stores video track ID of the track being parsed\n\n        var trackId; // Stores the timescale of the track being parsed\n\n        var timescale; // Stores captions parsed so far\n\n        var parsedCaptions;\n        /**\n          * A method to indicate whether a CaptionParser has been initalized\n          * @returns {Boolean}\n         **/\n\n        this.isInitialized = function () {\n          return isInitialized;\n        };\n        /**\n          * Initializes the underlying CaptionStream, SEI NAL parsing\n          * and management, and caption collection\n         **/\n\n\n        this.init = function () {\n          captionStream$$1 = new CaptionStream$1();\n          isInitialized = true; // Collect dispatched captions\n\n          captionStream$$1.on('data', function (event) {\n            // Convert to seconds in the source's timescale\n            event.startTime = event.startPts / timescale;\n            event.endTime = event.endPts / timescale;\n            parsedCaptions.captions.push(event);\n            parsedCaptions.captionStreams[event.stream] = true;\n          });\n        };\n        /**\n          * Determines if a new video track will be selected\n          * or if the timescale changed\n          * @return {Boolean}\n         **/\n\n\n        this.isNewInit = function (videoTrackIds, timescales) {\n          if (videoTrackIds && videoTrackIds.length === 0 || timescales && typeof timescales === 'object' && Object.keys(timescales).length === 0) {\n            return false;\n          }\n\n          return trackId !== videoTrackIds[0] || timescale !== timescales[trackId];\n        };\n        /**\n          * Parses out SEI captions and interacts with underlying\n          * CaptionStream to return dispatched captions\n          *\n          * @param {Uint8Array} segment - The fmp4 segment containing embedded captions\n          * @param {Number[]} videoTrackIds - A list of video tracks found in the init segment\n          * @param {Object.<Number, Number>} timescales - The timescales found in the init segment\n          * @see parseEmbeddedCaptions\n          * @see m2ts/caption-stream.js\n         **/\n\n\n        this.parse = function (segment, videoTrackIds, timescales) {\n          var parsedData;\n\n          if (!this.isInitialized()) {\n            return null; // This is not likely to be a video segment\n          } else if (!videoTrackIds || !timescales) {\n            return null;\n          } else if (this.isNewInit(videoTrackIds, timescales)) {\n            // Use the first video track only as there is no\n            // mechanism to switch to other video tracks\n            trackId = videoTrackIds[0];\n            timescale = timescales[trackId]; // If an init segment has not been seen yet, hold onto segment\n            // data until we have one\n          } else if (!trackId || !timescale) {\n            segmentCache.push(segment);\n            return null;\n          } // Now that a timescale and trackId is set, parse cached segments\n\n\n          while (segmentCache.length > 0) {\n            var cachedSegment = segmentCache.shift();\n            this.parse(cachedSegment, videoTrackIds, timescales);\n          }\n\n          parsedData = parseEmbeddedCaptions(segment, trackId, timescale);\n\n          if (parsedData === null || !parsedData.seiNals) {\n            return null;\n          }\n\n          this.pushNals(parsedData.seiNals); // Force the parsed captions to be dispatched\n\n          this.flushStream();\n          return parsedCaptions;\n        };\n        /**\n          * Pushes SEI NALUs onto CaptionStream\n          * @param {Object[]} nals - A list of SEI nals parsed using `parseCaptionNals`\n          * Assumes that `parseCaptionNals` has been called first\n          * @see m2ts/caption-stream.js\n          **/\n\n\n        this.pushNals = function (nals) {\n          if (!this.isInitialized() || !nals || nals.length === 0) {\n            return null;\n          }\n\n          nals.forEach(function (nal) {\n            captionStream$$1.push(nal);\n          });\n        };\n        /**\n          * Flushes underlying CaptionStream to dispatch processed, displayable captions\n          * @see m2ts/caption-stream.js\n         **/\n\n\n        this.flushStream = function () {\n          if (!this.isInitialized()) {\n            return null;\n          }\n\n          captionStream$$1.flush();\n        };\n        /**\n          * Reset caption buckets for new data\n         **/\n\n\n        this.clearParsedCaptions = function () {\n          parsedCaptions.captions = [];\n          parsedCaptions.captionStreams = {};\n        };\n        /**\n          * Resets underlying CaptionStream\n          * @see m2ts/caption-stream.js\n         **/\n\n\n        this.resetCaptionStream = function () {\n          if (!this.isInitialized()) {\n            return null;\n          }\n\n          captionStream$$1.reset();\n        };\n        /**\n          * Convenience method to clear all captions flushed from the\n          * CaptionStream and still being parsed\n          * @see m2ts/caption-stream.js\n         **/\n\n\n        this.clearAllCaptions = function () {\n          this.clearParsedCaptions();\n          this.resetCaptionStream();\n        };\n        /**\n          * Reset caption parser\n         **/\n\n\n        this.reset = function () {\n          segmentCache = [];\n          trackId = null;\n          timescale = null;\n\n          if (!parsedCaptions) {\n            parsedCaptions = {\n              captions: [],\n              // CC1, CC2, CC3, CC4\n              captionStreams: {}\n            };\n          } else {\n            this.clearParsedCaptions();\n          }\n\n          this.resetCaptionStream();\n        };\n\n        this.reset();\n      };\n\n      var captionParser = CaptionParser$$1;\n      var mp4$$1 = {\n        generator: mp4Generator,\n        probe: probe$$1,\n        Transmuxer: transmuxer.Transmuxer,\n        AudioSegmentStream: transmuxer.AudioSegmentStream,\n        VideoSegmentStream: transmuxer.VideoSegmentStream,\n        CaptionParser: captionParser\n      };\n\n      var classCallCheck = function classCallCheck(instance, Constructor) {\n        if (!(instance instanceof Constructor)) {\n          throw new TypeError(\"Cannot call a class as a function\");\n        }\n      };\n\n      var createClass = function () {\n        function defineProperties(target, props) {\n          for (var i = 0; i < props.length; i++) {\n            var descriptor = props[i];\n            descriptor.enumerable = descriptor.enumerable || false;\n            descriptor.configurable = true;\n            if (\"value\" in descriptor) descriptor.writable = true;\n            Object.defineProperty(target, descriptor.key, descriptor);\n          }\n        }\n\n        return function (Constructor, protoProps, staticProps) {\n          if (protoProps) defineProperties(Constructor.prototype, protoProps);\n          if (staticProps) defineProperties(Constructor, staticProps);\n          return Constructor;\n        };\n      }();\n      /**\n       * @file transmuxer-worker.js\n       */\n\n      /**\n       * Re-emits transmuxer events by converting them into messages to the\n       * world outside the worker.\n       *\n       * @param {Object} transmuxer the transmuxer to wire events on\n       * @private\n       */\n\n\n      var wireTransmuxerEvents = function wireTransmuxerEvents(self, transmuxer) {\n        transmuxer.on('data', function (segment) {\n          // transfer ownership of the underlying ArrayBuffer\n          // instead of doing a copy to save memory\n          // ArrayBuffers are transferable but generic TypedArrays are not\n          // @link https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Using_web_workers#Passing_data_by_transferring_ownership_(transferable_objects)\n          var initArray = segment.initSegment;\n          segment.initSegment = {\n            data: initArray.buffer,\n            byteOffset: initArray.byteOffset,\n            byteLength: initArray.byteLength\n          };\n          var typedArray = segment.data;\n          segment.data = typedArray.buffer;\n          self.postMessage({\n            action: 'data',\n            segment: segment,\n            byteOffset: typedArray.byteOffset,\n            byteLength: typedArray.byteLength\n          }, [segment.data]);\n        });\n\n        if (transmuxer.captionStream) {\n          transmuxer.captionStream.on('data', function (caption) {\n            self.postMessage({\n              action: 'caption',\n              data: caption\n            });\n          });\n        }\n\n        transmuxer.on('done', function (data) {\n          self.postMessage({\n            action: 'done'\n          });\n        });\n        transmuxer.on('gopInfo', function (gopInfo) {\n          self.postMessage({\n            action: 'gopInfo',\n            gopInfo: gopInfo\n          });\n        });\n      };\n      /**\n       * All incoming messages route through this hash. If no function exists\n       * to handle an incoming message, then we ignore the message.\n       *\n       * @class MessageHandlers\n       * @param {Object} options the options to initialize with\n       */\n\n\n      var MessageHandlers = function () {\n        function MessageHandlers(self, options) {\n          classCallCheck(this, MessageHandlers);\n          this.options = options || {};\n          this.self = self;\n          this.init();\n        }\n        /**\n         * initialize our web worker and wire all the events.\n         */\n\n\n        createClass(MessageHandlers, [{\n          key: 'init',\n          value: function init() {\n            if (this.transmuxer) {\n              this.transmuxer.dispose();\n            }\n\n            this.transmuxer = new mp4$$1.Transmuxer(this.options);\n            wireTransmuxerEvents(this.self, this.transmuxer);\n          }\n          /**\n           * Adds data (a ts segment) to the start of the transmuxer pipeline for\n           * processing.\n           *\n           * @param {ArrayBuffer} data data to push into the muxer\n           */\n\n        }, {\n          key: 'push',\n          value: function push(data) {\n            // Cast array buffer to correct type for transmuxer\n            var segment = new Uint8Array(data.data, data.byteOffset, data.byteLength);\n            this.transmuxer.push(segment);\n          }\n          /**\n           * Recreate the transmuxer so that the next segment added via `push`\n           * start with a fresh transmuxer.\n           */\n\n        }, {\n          key: 'reset',\n          value: function reset() {\n            this.init();\n          }\n          /**\n           * Set the value that will be used as the `baseMediaDecodeTime` time for the\n           * next segment pushed in. Subsequent segments will have their `baseMediaDecodeTime`\n           * set relative to the first based on the PTS values.\n           *\n           * @param {Object} data used to set the timestamp offset in the muxer\n           */\n\n        }, {\n          key: 'setTimestampOffset',\n          value: function setTimestampOffset(data) {\n            var timestampOffset = data.timestampOffset || 0;\n            this.transmuxer.setBaseMediaDecodeTime(Math.round(timestampOffset * 90000));\n          }\n        }, {\n          key: 'setAudioAppendStart',\n          value: function setAudioAppendStart(data) {\n            this.transmuxer.setAudioAppendStart(Math.ceil(data.appendStart * 90000));\n          }\n          /**\n           * Forces the pipeline to finish processing the last segment and emit it's\n           * results.\n           *\n           * @param {Object} data event data, not really used\n           */\n\n        }, {\n          key: 'flush',\n          value: function flush(data) {\n            this.transmuxer.flush();\n          }\n        }, {\n          key: 'resetCaptions',\n          value: function resetCaptions() {\n            this.transmuxer.resetCaptions();\n          }\n        }, {\n          key: 'alignGopsWith',\n          value: function alignGopsWith(data) {\n            this.transmuxer.alignGopsWith(data.gopsToAlignWith.slice());\n          }\n        }]);\n        return MessageHandlers;\n      }();\n      /**\n       * Our web wroker interface so that things can talk to mux.js\n       * that will be running in a web worker. the scope is passed to this by\n       * webworkify.\n       *\n       * @param {Object} self the scope for the web worker\n       */\n\n\n      var TransmuxerWorker = function TransmuxerWorker(self) {\n        self.onmessage = function (event) {\n          if (event.data.action === 'init' && event.data.options) {\n            this.messageHandlers = new MessageHandlers(self, event.data.options);\n            return;\n          }\n\n          if (!this.messageHandlers) {\n            this.messageHandlers = new MessageHandlers(self);\n          }\n\n          if (event.data && event.data.action && event.data.action !== 'init') {\n            if (this.messageHandlers[event.data.action]) {\n              this.messageHandlers[event.data.action](event.data);\n            }\n          }\n        };\n      };\n\n      var transmuxerWorker = new TransmuxerWorker(self);\n      return transmuxerWorker;\n    }();\n  });\n  /**\n   * @file - codecs.js - Handles tasks regarding codec strings such as translating them to\n   * codec strings, or translating codec strings into objects that can be examined.\n   */\n  // Default codec parameters if none were provided for video and/or audio\n\n  var defaultCodecs = {\n    videoCodec: 'avc1',\n    videoObjectTypeIndicator: '.4d400d',\n    // AAC-LC\n    audioProfile: '2'\n  };\n  /**\n   * Replace the old apple-style `avc1.<dd>.<dd>` codec string with the standard\n   * `avc1.<hhhhhh>`\n   *\n   * @param {Array} codecs an array of codec strings to fix\n   * @return {Array} the translated codec array\n   * @private\n   */\n\n  var translateLegacyCodecs = function translateLegacyCodecs(codecs) {\n    return codecs.map(function (codec) {\n      return codec.replace(/avc1\\.(\\d+)\\.(\\d+)/i, function (orig, profile, avcLevel) {\n        var profileHex = ('00' + Number(profile).toString(16)).slice(-2);\n        var avcLevelHex = ('00' + Number(avcLevel).toString(16)).slice(-2);\n        return 'avc1.' + profileHex + '00' + avcLevelHex;\n      });\n    });\n  };\n  /**\n   * Parses a codec string to retrieve the number of codecs specified,\n   * the video codec and object type indicator, and the audio profile.\n   */\n\n\n  var parseCodecs = function parseCodecs() {\n    var codecs = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : '';\n    var result = {\n      codecCount: 0\n    };\n    var parsed = void 0;\n    result.codecCount = codecs.split(',').length;\n    result.codecCount = result.codecCount || 2; // parse the video codec\n\n    parsed = /(^|\\s|,)+(avc[13])([^ ,]*)/i.exec(codecs);\n\n    if (parsed) {\n      result.videoCodec = parsed[2];\n      result.videoObjectTypeIndicator = parsed[3];\n    } // parse the last field of the audio codec\n\n\n    result.audioProfile = /(^|\\s|,)+mp4a.[0-9A-Fa-f]+\\.([0-9A-Fa-f]+)/i.exec(codecs);\n    result.audioProfile = result.audioProfile && result.audioProfile[2];\n    return result;\n  };\n  /**\n   * Replace codecs in the codec string with the old apple-style `avc1.<dd>.<dd>` to the\n   * standard `avc1.<hhhhhh>`.\n   *\n   * @param codecString {String} the codec string\n   * @return {String} the codec string with old apple-style codecs replaced\n   *\n   * @private\n   */\n\n\n  var mapLegacyAvcCodecs = function mapLegacyAvcCodecs(codecString) {\n    return codecString.replace(/avc1\\.(\\d+)\\.(\\d+)/i, function (match) {\n      return translateLegacyCodecs([match])[0];\n    });\n  };\n  /**\n   * Build a media mime-type string from a set of parameters\n   * @param {String} type either 'audio' or 'video'\n   * @param {String} container either 'mp2t' or 'mp4'\n   * @param {Array} codecs an array of codec strings to add\n   * @return {String} a valid media mime-type\n   */\n\n\n  var makeMimeTypeString = function makeMimeTypeString(type, container, codecs) {\n    // The codecs array is filtered so that falsey values are\n    // dropped and don't cause Array#join to create spurious\n    // commas\n    return type + '/' + container + '; codecs=\"' + codecs.filter(function (c) {\n      return !!c;\n    }).join(', ') + '\"';\n  };\n  /**\n   * Returns the type container based on information in the playlist\n   * @param {Playlist} media the current media playlist\n   * @return {String} a valid media container type\n   */\n\n\n  var getContainerType = function getContainerType(media) {\n    // An initialization segment means the media playlist is an iframe\n    // playlist or is using the mp4 container. We don't currently\n    // support iframe playlists, so assume this is signalling mp4\n    // fragments.\n    if (media.segments && media.segments.length && media.segments[0].map) {\n      return 'mp4';\n    }\n\n    return 'mp2t';\n  };\n  /**\n   * Returns a set of codec strings parsed from the playlist or the default\n   * codec strings if no codecs were specified in the playlist\n   * @param {Playlist} media the current media playlist\n   * @return {Object} an object with the video and audio codecs\n   */\n\n\n  var getCodecs = function getCodecs(media) {\n    // if the codecs were explicitly specified, use them instead of the\n    // defaults\n    var mediaAttributes = media.attributes || {};\n\n    if (mediaAttributes.CODECS) {\n      return parseCodecs(mediaAttributes.CODECS);\n    }\n\n    return defaultCodecs;\n  };\n\n  var audioProfileFromDefault = function audioProfileFromDefault(master, audioGroupId) {\n    if (!master.mediaGroups.AUDIO || !audioGroupId) {\n      return null;\n    }\n\n    var audioGroup = master.mediaGroups.AUDIO[audioGroupId];\n\n    if (!audioGroup) {\n      return null;\n    }\n\n    for (var name in audioGroup) {\n      var audioType = audioGroup[name];\n\n      if (audioType.default && audioType.playlists) {\n        // codec should be the same for all playlists within the audio type\n        return parseCodecs(audioType.playlists[0].attributes.CODECS).audioProfile;\n      }\n    }\n\n    return null;\n  };\n  /**\n   * Calculates the MIME type strings for a working configuration of\n   * SourceBuffers to play variant streams in a master playlist. If\n   * there is no possible working configuration, an empty array will be\n   * returned.\n   *\n   * @param master {Object} the m3u8 object for the master playlist\n   * @param media {Object} the m3u8 object for the variant playlist\n   * @return {Array} the MIME type strings. If the array has more than\n   * one entry, the first element should be applied to the video\n   * SourceBuffer and the second to the audio SourceBuffer.\n   *\n   * @private\n   */\n\n\n  var mimeTypesForPlaylist = function mimeTypesForPlaylist(master, media) {\n    var containerType = getContainerType(media);\n    var codecInfo = getCodecs(media);\n    var mediaAttributes = media.attributes || {}; // Default condition for a traditional HLS (no demuxed audio/video)\n\n    var isMuxed = true;\n    var isMaat = false;\n\n    if (!media) {\n      // Not enough information\n      return [];\n    }\n\n    if (master.mediaGroups.AUDIO && mediaAttributes.AUDIO) {\n      var audioGroup = master.mediaGroups.AUDIO[mediaAttributes.AUDIO]; // Handle the case where we are in a multiple-audio track scenario\n\n      if (audioGroup) {\n        isMaat = true; // Start with the everything demuxed then...\n\n        isMuxed = false; // ...check to see if any audio group tracks are muxed (ie. lacking a uri)\n\n        for (var groupId in audioGroup) {\n          // either a uri is present (if the case of HLS and an external playlist), or\n          // playlists is present (in the case of DASH where we don't have external audio\n          // playlists)\n          if (!audioGroup[groupId].uri && !audioGroup[groupId].playlists) {\n            isMuxed = true;\n            break;\n          }\n        }\n      }\n    } // HLS with multiple-audio tracks must always get an audio codec.\n    // Put another way, there is no way to have a video-only multiple-audio HLS!\n\n\n    if (isMaat && !codecInfo.audioProfile) {\n      if (!isMuxed) {\n        // It is possible for codecs to be specified on the audio media group playlist but\n        // not on the rendition playlist. This is mostly the case for DASH, where audio and\n        // video are always separate (and separately specified).\n        codecInfo.audioProfile = audioProfileFromDefault(master, mediaAttributes.AUDIO);\n      }\n\n      if (!codecInfo.audioProfile) {\n        videojs$1.log.warn('Multiple audio tracks present but no audio codec string is specified. ' + 'Attempting to use the default audio codec (mp4a.40.2)');\n        codecInfo.audioProfile = defaultCodecs.audioProfile;\n      }\n    } // Generate the final codec strings from the codec object generated above\n\n\n    var codecStrings = {};\n\n    if (codecInfo.videoCodec) {\n      codecStrings.video = '' + codecInfo.videoCodec + codecInfo.videoObjectTypeIndicator;\n    }\n\n    if (codecInfo.audioProfile) {\n      codecStrings.audio = 'mp4a.40.' + codecInfo.audioProfile;\n    } // Finally, make and return an array with proper mime-types depending on\n    // the configuration\n\n\n    var justAudio = makeMimeTypeString('audio', containerType, [codecStrings.audio]);\n    var justVideo = makeMimeTypeString('video', containerType, [codecStrings.video]);\n    var bothVideoAudio = makeMimeTypeString('video', containerType, [codecStrings.video, codecStrings.audio]);\n\n    if (isMaat) {\n      if (!isMuxed && codecStrings.video) {\n        return [justVideo, justAudio];\n      }\n\n      if (!isMuxed && !codecStrings.video) {\n        // There is no muxed content and no video codec string, so this is an audio only\n        // stream with alternate audio.\n        return [justAudio, justAudio];\n      } // There exists the possiblity that this will return a `video/container`\n      // mime-type for the first entry in the array even when there is only audio.\n      // This doesn't appear to be a problem and simplifies the code.\n\n\n      return [bothVideoAudio, justAudio];\n    } // If there is no video codec at all, always just return a single\n    // audio/<container> mime-type\n\n\n    if (!codecStrings.video) {\n      return [justAudio];\n    } // When not using separate audio media groups, audio and video is\n    // *always* muxed\n\n\n    return [bothVideoAudio];\n  };\n  /**\n   * Parse a content type header into a type and parameters\n   * object\n   *\n   * @param {String} type the content type header\n   * @return {Object} the parsed content-type\n   * @private\n   */\n\n\n  var parseContentType = function parseContentType(type) {\n    var object = {\n      type: '',\n      parameters: {}\n    };\n    var parameters = type.trim().split(';'); // first parameter should always be content-type\n\n    object.type = parameters.shift().trim();\n    parameters.forEach(function (parameter) {\n      var pair = parameter.trim().split('=');\n\n      if (pair.length > 1) {\n        var name = pair[0].replace(/\"/g, '').trim();\n        var value = pair[1].replace(/\"/g, '').trim();\n        object.parameters[name] = value;\n      }\n    });\n    return object;\n  };\n  /**\n   * Check if a codec string refers to an audio codec.\n   *\n   * @param {String} codec codec string to check\n   * @return {Boolean} if this is an audio codec\n   * @private\n   */\n\n\n  var isAudioCodec = function isAudioCodec(codec) {\n    return /mp4a\\.\\d+.\\d+/i.test(codec);\n  };\n  /**\n   * Check if a codec string refers to a video codec.\n   *\n   * @param {String} codec codec string to check\n   * @return {Boolean} if this is a video codec\n   * @private\n   */\n\n\n  var isVideoCodec = function isVideoCodec(codec) {\n    return /avc1\\.[\\da-f]+/i.test(codec);\n  };\n  /**\n   * Returns a list of gops in the buffer that have a pts value of 3 seconds or more in\n   * front of current time.\n   *\n   * @param {Array} buffer\n   *        The current buffer of gop information\n   * @param {Number} currentTime\n   *        The current time\n   * @param {Double} mapping\n   *        Offset to map display time to stream presentation time\n   * @return {Array}\n   *         List of gops considered safe to append over\n   */\n\n\n  var gopsSafeToAlignWith = function gopsSafeToAlignWith(buffer, currentTime, mapping) {\n    if (typeof currentTime === 'undefined' || currentTime === null || !buffer.length) {\n      return [];\n    } // pts value for current time + 3 seconds to give a bit more wiggle room\n\n\n    var currentTimePts = Math.ceil((currentTime - mapping + 3) * 90000);\n    var i = void 0;\n\n    for (i = 0; i < buffer.length; i++) {\n      if (buffer[i].pts > currentTimePts) {\n        break;\n      }\n    }\n\n    return buffer.slice(i);\n  };\n  /**\n   * Appends gop information (timing and byteLength) received by the transmuxer for the\n   * gops appended in the last call to appendBuffer\n   *\n   * @param {Array} buffer\n   *        The current buffer of gop information\n   * @param {Array} gops\n   *        List of new gop information\n   * @param {boolean} replace\n   *        If true, replace the buffer with the new gop information. If false, append the\n   *        new gop information to the buffer in the right location of time.\n   * @return {Array}\n   *         Updated list of gop information\n   */\n\n\n  var updateGopBuffer = function updateGopBuffer(buffer, gops, replace) {\n    if (!gops.length) {\n      return buffer;\n    }\n\n    if (replace) {\n      // If we are in safe append mode, then completely overwrite the gop buffer\n      // with the most recent appeneded data. This will make sure that when appending\n      // future segments, we only try to align with gops that are both ahead of current\n      // time and in the last segment appended.\n      return gops.slice();\n    }\n\n    var start = gops[0].pts;\n    var i = 0;\n\n    for (i; i < buffer.length; i++) {\n      if (buffer[i].pts >= start) {\n        break;\n      }\n    }\n\n    return buffer.slice(0, i).concat(gops);\n  };\n  /**\n   * Removes gop information in buffer that overlaps with provided start and end\n   *\n   * @param {Array} buffer\n   *        The current buffer of gop information\n   * @param {Double} start\n   *        position to start the remove at\n   * @param {Double} end\n   *        position to end the remove at\n   * @param {Double} mapping\n   *        Offset to map display time to stream presentation time\n   */\n\n\n  var removeGopBuffer = function removeGopBuffer(buffer, start, end, mapping) {\n    var startPts = Math.ceil((start - mapping) * 90000);\n    var endPts = Math.ceil((end - mapping) * 90000);\n    var updatedBuffer = buffer.slice();\n    var i = buffer.length;\n\n    while (i--) {\n      if (buffer[i].pts <= endPts) {\n        break;\n      }\n    }\n\n    if (i === -1) {\n      // no removal because end of remove range is before start of buffer\n      return updatedBuffer;\n    }\n\n    var j = i + 1;\n\n    while (j--) {\n      if (buffer[j].pts <= startPts) {\n        break;\n      }\n    } // clamp remove range start to 0 index\n\n\n    j = Math.max(j, 0);\n    updatedBuffer.splice(j, i - j + 1);\n    return updatedBuffer;\n  };\n\n  var buffered = function buffered(videoBuffer, audioBuffer, audioDisabled) {\n    var start = null;\n    var end = null;\n    var arity = 0;\n    var extents = [];\n    var ranges = []; // neither buffer has been created yet\n\n    if (!videoBuffer && !audioBuffer) {\n      return videojs$1.createTimeRange();\n    } // only one buffer is configured\n\n\n    if (!videoBuffer) {\n      return audioBuffer.buffered;\n    }\n\n    if (!audioBuffer) {\n      return videoBuffer.buffered;\n    } // both buffers are configured\n\n\n    if (audioDisabled) {\n      return videoBuffer.buffered;\n    } // both buffers are empty\n\n\n    if (videoBuffer.buffered.length === 0 && audioBuffer.buffered.length === 0) {\n      return videojs$1.createTimeRange();\n    } // Handle the case where we have both buffers and create an\n    // intersection of the two\n\n\n    var videoBuffered = videoBuffer.buffered;\n    var audioBuffered = audioBuffer.buffered;\n    var count = videoBuffered.length; // A) Gather up all start and end times\n\n    while (count--) {\n      extents.push({\n        time: videoBuffered.start(count),\n        type: 'start'\n      });\n      extents.push({\n        time: videoBuffered.end(count),\n        type: 'end'\n      });\n    }\n\n    count = audioBuffered.length;\n\n    while (count--) {\n      extents.push({\n        time: audioBuffered.start(count),\n        type: 'start'\n      });\n      extents.push({\n        time: audioBuffered.end(count),\n        type: 'end'\n      });\n    } // B) Sort them by time\n\n\n    extents.sort(function (a, b) {\n      return a.time - b.time;\n    }); // C) Go along one by one incrementing arity for start and decrementing\n    //    arity for ends\n\n    for (count = 0; count < extents.length; count++) {\n      if (extents[count].type === 'start') {\n        arity++; // D) If arity is ever incremented to 2 we are entering an\n        //    overlapping range\n\n        if (arity === 2) {\n          start = extents[count].time;\n        }\n      } else if (extents[count].type === 'end') {\n        arity--; // E) If arity is ever decremented to 1 we leaving an\n        //    overlapping range\n\n        if (arity === 1) {\n          end = extents[count].time;\n        }\n      } // F) Record overlapping ranges\n\n\n      if (start !== null && end !== null) {\n        ranges.push([start, end]);\n        start = null;\n        end = null;\n      }\n    }\n\n    return videojs$1.createTimeRanges(ranges);\n  };\n  /**\n   * @file virtual-source-buffer.js\n   */\n  // We create a wrapper around the SourceBuffer so that we can manage the\n  // state of the `updating` property manually. We have to do this because\n  // Firefox changes `updating` to false long before triggering `updateend`\n  // events and that was causing strange problems in videojs-contrib-hls\n\n\n  var makeWrappedSourceBuffer = function makeWrappedSourceBuffer(mediaSource, mimeType) {\n    var sourceBuffer = mediaSource.addSourceBuffer(mimeType);\n    var wrapper = Object.create(null);\n    wrapper.updating = false;\n    wrapper.realBuffer_ = sourceBuffer;\n\n    var _loop = function _loop(key) {\n      if (typeof sourceBuffer[key] === 'function') {\n        wrapper[key] = function () {\n          return sourceBuffer[key].apply(sourceBuffer, arguments);\n        };\n      } else if (typeof wrapper[key] === 'undefined') {\n        Object.defineProperty(wrapper, key, {\n          get: function get$$1() {\n            return sourceBuffer[key];\n          },\n          set: function set$$1(v) {\n            return sourceBuffer[key] = v;\n          }\n        });\n      }\n    };\n\n    for (var key in sourceBuffer) {\n      _loop(key);\n    }\n\n    return wrapper;\n  };\n  /**\n   * VirtualSourceBuffers exist so that we can transmux non native formats\n   * into a native format, but keep the same api as a native source buffer.\n   * It creates a transmuxer, that works in its own thread (a web worker) and\n   * that transmuxer muxes the data into a native format. VirtualSourceBuffer will\n   * then send all of that data to the naive sourcebuffer so that it is\n   * indestinguishable from a natively supported format.\n   *\n   * @param {HtmlMediaSource} mediaSource the parent mediaSource\n   * @param {Array} codecs array of codecs that we will be dealing with\n   * @class VirtualSourceBuffer\n   * @extends video.js.EventTarget\n   */\n\n\n  var VirtualSourceBuffer = function (_videojs$EventTarget) {\n    inherits$1(VirtualSourceBuffer, _videojs$EventTarget);\n\n    function VirtualSourceBuffer(mediaSource, codecs) {\n      classCallCheck$1(this, VirtualSourceBuffer);\n\n      var _this = possibleConstructorReturn$1(this, (VirtualSourceBuffer.__proto__ || Object.getPrototypeOf(VirtualSourceBuffer)).call(this, videojs$1.EventTarget));\n\n      _this.timestampOffset_ = 0;\n      _this.pendingBuffers_ = [];\n      _this.bufferUpdating_ = false;\n      _this.mediaSource_ = mediaSource;\n      _this.codecs_ = codecs;\n      _this.audioCodec_ = null;\n      _this.videoCodec_ = null;\n      _this.audioDisabled_ = false;\n      _this.appendAudioInitSegment_ = true;\n      _this.gopBuffer_ = [];\n      _this.timeMapping_ = 0;\n      _this.safeAppend_ = videojs$1.browser.IE_VERSION >= 11;\n      var options = {\n        remux: false,\n        alignGopsAtEnd: _this.safeAppend_\n      };\n\n      _this.codecs_.forEach(function (codec) {\n        if (isAudioCodec(codec)) {\n          _this.audioCodec_ = codec;\n        } else if (isVideoCodec(codec)) {\n          _this.videoCodec_ = codec;\n        }\n      }); // append muxed segments to their respective native buffers as\n      // soon as they are available\n\n\n      _this.transmuxer_ = new TransmuxWorker();\n\n      _this.transmuxer_.postMessage({\n        action: 'init',\n        options: options\n      });\n\n      _this.transmuxer_.onmessage = function (event) {\n        if (event.data.action === 'data') {\n          return _this.data_(event);\n        }\n\n        if (event.data.action === 'done') {\n          return _this.done_(event);\n        }\n\n        if (event.data.action === 'gopInfo') {\n          return _this.appendGopInfo_(event);\n        }\n      }; // this timestampOffset is a property with the side-effect of resetting\n      // baseMediaDecodeTime in the transmuxer on the setter\n\n\n      Object.defineProperty(_this, 'timestampOffset', {\n        get: function get$$1() {\n          return this.timestampOffset_;\n        },\n        set: function set$$1(val) {\n          if (typeof val === 'number' && val >= 0) {\n            this.timestampOffset_ = val;\n            this.appendAudioInitSegment_ = true; // reset gop buffer on timestampoffset as this signals a change in timeline\n\n            this.gopBuffer_.length = 0;\n            this.timeMapping_ = 0; // We have to tell the transmuxer to set the baseMediaDecodeTime to\n            // the desired timestampOffset for the next segment\n\n            this.transmuxer_.postMessage({\n              action: 'setTimestampOffset',\n              timestampOffset: val\n            });\n          }\n        }\n      }); // setting the append window affects both source buffers\n\n      Object.defineProperty(_this, 'appendWindowStart', {\n        get: function get$$1() {\n          return (this.videoBuffer_ || this.audioBuffer_).appendWindowStart;\n        },\n        set: function set$$1(start) {\n          if (this.videoBuffer_) {\n            this.videoBuffer_.appendWindowStart = start;\n          }\n\n          if (this.audioBuffer_) {\n            this.audioBuffer_.appendWindowStart = start;\n          }\n        }\n      }); // this buffer is \"updating\" if either of its native buffers are\n\n      Object.defineProperty(_this, 'updating', {\n        get: function get$$1() {\n          return !!(this.bufferUpdating_ || !this.audioDisabled_ && this.audioBuffer_ && this.audioBuffer_.updating || this.videoBuffer_ && this.videoBuffer_.updating);\n        }\n      }); // the buffered property is the intersection of the buffered\n      // ranges of the native source buffers\n\n      Object.defineProperty(_this, 'buffered', {\n        get: function get$$1() {\n          return buffered(this.videoBuffer_, this.audioBuffer_, this.audioDisabled_);\n        }\n      });\n      return _this;\n    }\n    /**\n     * When we get a data event from the transmuxer\n     * we call this function and handle the data that\n     * was sent to us\n     *\n     * @private\n     * @param {Event} event the data event from the transmuxer\n     */\n\n\n    createClass$1(VirtualSourceBuffer, [{\n      key: 'data_',\n      value: function data_(event) {\n        var segment = event.data.segment; // Cast ArrayBuffer to TypedArray\n\n        segment.data = new Uint8Array(segment.data, event.data.byteOffset, event.data.byteLength);\n        segment.initSegment = new Uint8Array(segment.initSegment.data, segment.initSegment.byteOffset, segment.initSegment.byteLength);\n        createTextTracksIfNecessary(this, this.mediaSource_, segment); // Add the segments to the pendingBuffers array\n\n        this.pendingBuffers_.push(segment);\n        return;\n      }\n      /**\n       * When we get a done event from the transmuxer\n       * we call this function and we process all\n       * of the pending data that we have been saving in the\n       * data_ function\n       *\n       * @private\n       * @param {Event} event the done event from the transmuxer\n       */\n\n    }, {\n      key: 'done_',\n      value: function done_(event) {\n        // Don't process and append data if the mediaSource is closed\n        if (this.mediaSource_.readyState === 'closed') {\n          this.pendingBuffers_.length = 0;\n          return;\n        } // All buffers should have been flushed from the muxer\n        // start processing anything we have received\n\n\n        this.processPendingSegments_();\n        return;\n      }\n      /**\n       * Create our internal native audio/video source buffers and add\n       * event handlers to them with the following conditions:\n       * 1. they do not already exist on the mediaSource\n       * 2. this VSB has a codec for them\n       *\n       * @private\n       */\n\n    }, {\n      key: 'createRealSourceBuffers_',\n      value: function createRealSourceBuffers_() {\n        var _this2 = this;\n\n        var types = ['audio', 'video'];\n        types.forEach(function (type) {\n          // Don't create a SourceBuffer of this type if we don't have a\n          // codec for it\n          if (!_this2[type + 'Codec_']) {\n            return;\n          } // Do nothing if a SourceBuffer of this type already exists\n\n\n          if (_this2[type + 'Buffer_']) {\n            return;\n          }\n\n          var buffer = null; // If the mediasource already has a SourceBuffer for the codec\n          // use that\n\n          if (_this2.mediaSource_[type + 'Buffer_']) {\n            buffer = _this2.mediaSource_[type + 'Buffer_']; // In multiple audio track cases, the audio source buffer is disabled\n            // on the main VirtualSourceBuffer by the HTMLMediaSource much earlier\n            // than createRealSourceBuffers_ is called to create the second\n            // VirtualSourceBuffer because that happens as a side-effect of\n            // videojs-contrib-hls starting the audioSegmentLoader. As a result,\n            // the audioBuffer is essentially \"ownerless\" and no one will toggle\n            // the `updating` state back to false once the `updateend` event is received\n            //\n            // Setting `updating` to false manually will work around this\n            // situation and allow work to continue\n\n            buffer.updating = false;\n          } else {\n            var codecProperty = type + 'Codec_';\n            var mimeType = type + '/mp4;codecs=\"' + _this2[codecProperty] + '\"';\n            buffer = makeWrappedSourceBuffer(_this2.mediaSource_.nativeMediaSource_, mimeType);\n            _this2.mediaSource_[type + 'Buffer_'] = buffer;\n          }\n\n          _this2[type + 'Buffer_'] = buffer; // Wire up the events to the SourceBuffer\n\n          ['update', 'updatestart', 'updateend'].forEach(function (event) {\n            buffer.addEventListener(event, function () {\n              // if audio is disabled\n              if (type === 'audio' && _this2.audioDisabled_) {\n                return;\n              }\n\n              if (event === 'updateend') {\n                _this2[type + 'Buffer_'].updating = false;\n              }\n\n              var shouldTrigger = types.every(function (t) {\n                // skip checking audio's updating status if audio\n                // is not enabled\n                if (t === 'audio' && _this2.audioDisabled_) {\n                  return true;\n                } // if the other type if updating we don't trigger\n\n\n                if (type !== t && _this2[t + 'Buffer_'] && _this2[t + 'Buffer_'].updating) {\n                  return false;\n                }\n\n                return true;\n              });\n\n              if (shouldTrigger) {\n                return _this2.trigger(event);\n              }\n            });\n          });\n        });\n      }\n      /**\n       * Emulate the native mediasource function, but our function will\n       * send all of the proposed segments to the transmuxer so that we\n       * can transmux them before we append them to our internal\n       * native source buffers in the correct format.\n       *\n       * @link https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/appendBuffer\n       * @param {Uint8Array} segment the segment to append to the buffer\n       */\n\n    }, {\n      key: 'appendBuffer',\n      value: function appendBuffer(segment) {\n        // Start the internal \"updating\" state\n        this.bufferUpdating_ = true;\n\n        if (this.audioBuffer_ && this.audioBuffer_.buffered.length) {\n          var audioBuffered = this.audioBuffer_.buffered;\n          this.transmuxer_.postMessage({\n            action: 'setAudioAppendStart',\n            appendStart: audioBuffered.end(audioBuffered.length - 1)\n          });\n        }\n\n        if (this.videoBuffer_) {\n          this.transmuxer_.postMessage({\n            action: 'alignGopsWith',\n            gopsToAlignWith: gopsSafeToAlignWith(this.gopBuffer_, this.mediaSource_.player_ ? this.mediaSource_.player_.currentTime() : null, this.timeMapping_)\n          });\n        }\n\n        this.transmuxer_.postMessage({\n          action: 'push',\n          // Send the typed-array of data as an ArrayBuffer so that\n          // it can be sent as a \"Transferable\" and avoid the costly\n          // memory copy\n          data: segment.buffer,\n          // To recreate the original typed-array, we need information\n          // about what portion of the ArrayBuffer it was a view into\n          byteOffset: segment.byteOffset,\n          byteLength: segment.byteLength\n        }, [segment.buffer]);\n        this.transmuxer_.postMessage({\n          action: 'flush'\n        });\n      }\n      /**\n       * Appends gop information (timing and byteLength) received by the transmuxer for the\n       * gops appended in the last call to appendBuffer\n       *\n       * @param {Event} event\n       *        The gopInfo event from the transmuxer\n       * @param {Array} event.data.gopInfo\n       *        List of gop info to append\n       */\n\n    }, {\n      key: 'appendGopInfo_',\n      value: function appendGopInfo_(event) {\n        this.gopBuffer_ = updateGopBuffer(this.gopBuffer_, event.data.gopInfo, this.safeAppend_);\n      }\n      /**\n       * Emulate the native mediasource function and remove parts\n       * of the buffer from any of our internal buffers that exist\n       *\n       * @link https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/remove\n       * @param {Double} start position to start the remove at\n       * @param {Double} end position to end the remove at\n       */\n\n    }, {\n      key: 'remove',\n      value: function remove(start, end) {\n        if (this.videoBuffer_) {\n          this.videoBuffer_.updating = true;\n          this.videoBuffer_.remove(start, end);\n          this.gopBuffer_ = removeGopBuffer(this.gopBuffer_, start, end, this.timeMapping_);\n        }\n\n        if (!this.audioDisabled_ && this.audioBuffer_) {\n          this.audioBuffer_.updating = true;\n          this.audioBuffer_.remove(start, end);\n        } // Remove Metadata Cues (id3)\n\n\n        removeCuesFromTrack(start, end, this.metadataTrack_); // Remove Any Captions\n\n        if (this.inbandTextTracks_) {\n          for (var track in this.inbandTextTracks_) {\n            removeCuesFromTrack(start, end, this.inbandTextTracks_[track]);\n          }\n        }\n      }\n      /**\n       * Process any segments that the muxer has output\n       * Concatenate segments together based on type and append them into\n       * their respective sourceBuffers\n       *\n       * @private\n       */\n\n    }, {\n      key: 'processPendingSegments_',\n      value: function processPendingSegments_() {\n        var sortedSegments = {\n          video: {\n            segments: [],\n            bytes: 0\n          },\n          audio: {\n            segments: [],\n            bytes: 0\n          },\n          captions: [],\n          metadata: []\n        }; // Sort segments into separate video/audio arrays and\n        // keep track of their total byte lengths\n\n        sortedSegments = this.pendingBuffers_.reduce(function (segmentObj, segment) {\n          var type = segment.type;\n          var data = segment.data;\n          var initSegment = segment.initSegment;\n          segmentObj[type].segments.push(data);\n          segmentObj[type].bytes += data.byteLength;\n          segmentObj[type].initSegment = initSegment; // Gather any captions into a single array\n\n          if (segment.captions) {\n            segmentObj.captions = segmentObj.captions.concat(segment.captions);\n          }\n\n          if (segment.info) {\n            segmentObj[type].info = segment.info;\n          } // Gather any metadata into a single array\n\n\n          if (segment.metadata) {\n            segmentObj.metadata = segmentObj.metadata.concat(segment.metadata);\n          }\n\n          return segmentObj;\n        }, sortedSegments); // Create the real source buffers if they don't exist by now since we\n        // finally are sure what tracks are contained in the source\n\n        if (!this.videoBuffer_ && !this.audioBuffer_) {\n          // Remove any codecs that may have been specified by default but\n          // are no longer applicable now\n          if (sortedSegments.video.bytes === 0) {\n            this.videoCodec_ = null;\n          }\n\n          if (sortedSegments.audio.bytes === 0) {\n            this.audioCodec_ = null;\n          }\n\n          this.createRealSourceBuffers_();\n        }\n\n        if (sortedSegments.audio.info) {\n          this.mediaSource_.trigger({\n            type: 'audioinfo',\n            info: sortedSegments.audio.info\n          });\n        }\n\n        if (sortedSegments.video.info) {\n          this.mediaSource_.trigger({\n            type: 'videoinfo',\n            info: sortedSegments.video.info\n          });\n        }\n\n        if (this.appendAudioInitSegment_) {\n          if (!this.audioDisabled_ && this.audioBuffer_) {\n            sortedSegments.audio.segments.unshift(sortedSegments.audio.initSegment);\n            sortedSegments.audio.bytes += sortedSegments.audio.initSegment.byteLength;\n          }\n\n          this.appendAudioInitSegment_ = false;\n        }\n\n        var triggerUpdateend = false; // Merge multiple video and audio segments into one and append\n\n        if (this.videoBuffer_ && sortedSegments.video.bytes) {\n          sortedSegments.video.segments.unshift(sortedSegments.video.initSegment);\n          sortedSegments.video.bytes += sortedSegments.video.initSegment.byteLength;\n          this.concatAndAppendSegments_(sortedSegments.video, this.videoBuffer_);\n        } else if (this.videoBuffer_ && (this.audioDisabled_ || !this.audioBuffer_)) {\n          // The transmuxer did not return any bytes of video, meaning it was all trimmed\n          // for gop alignment. Since we have a video buffer and audio is disabled, updateend\n          // will never be triggered by this source buffer, which will cause contrib-hls\n          // to be stuck forever waiting for updateend. If audio is not disabled, updateend\n          // will be triggered by the audio buffer, which will be sent upwards since the video\n          // buffer will not be in an updating state.\n          triggerUpdateend = true;\n        } // Add text-track data for all\n\n\n        addTextTrackData(this, sortedSegments.captions, sortedSegments.metadata);\n\n        if (!this.audioDisabled_ && this.audioBuffer_) {\n          this.concatAndAppendSegments_(sortedSegments.audio, this.audioBuffer_);\n        }\n\n        this.pendingBuffers_.length = 0;\n\n        if (triggerUpdateend) {\n          this.trigger('updateend');\n        } // We are no longer in the internal \"updating\" state\n\n\n        this.bufferUpdating_ = false;\n      }\n      /**\n       * Combine all segments into a single Uint8Array and then append them\n       * to the destination buffer\n       *\n       * @param {Object} segmentObj\n       * @param {SourceBuffer} destinationBuffer native source buffer to append data to\n       * @private\n       */\n\n    }, {\n      key: 'concatAndAppendSegments_',\n      value: function concatAndAppendSegments_(segmentObj, destinationBuffer) {\n        var offset = 0;\n        var tempBuffer = void 0;\n\n        if (segmentObj.bytes) {\n          tempBuffer = new Uint8Array(segmentObj.bytes); // Combine the individual segments into one large typed-array\n\n          segmentObj.segments.forEach(function (segment) {\n            tempBuffer.set(segment, offset);\n            offset += segment.byteLength;\n          });\n\n          try {\n            destinationBuffer.updating = true;\n            destinationBuffer.appendBuffer(tempBuffer);\n          } catch (error) {\n            if (this.mediaSource_.player_) {\n              this.mediaSource_.player_.error({\n                code: -3,\n                type: 'APPEND_BUFFER_ERR',\n                message: error.message,\n                originalError: error\n              });\n            }\n          }\n        }\n      }\n      /**\n       * Emulate the native mediasource function. abort any soureBuffer\n       * actions and throw out any un-appended data.\n       *\n       * @link https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/abort\n       */\n\n    }, {\n      key: 'abort',\n      value: function abort() {\n        if (this.videoBuffer_) {\n          this.videoBuffer_.abort();\n        }\n\n        if (!this.audioDisabled_ && this.audioBuffer_) {\n          this.audioBuffer_.abort();\n        }\n\n        if (this.transmuxer_) {\n          this.transmuxer_.postMessage({\n            action: 'reset'\n          });\n        }\n\n        this.pendingBuffers_.length = 0;\n        this.bufferUpdating_ = false;\n      }\n    }]);\n    return VirtualSourceBuffer;\n  }(videojs$1.EventTarget);\n  /**\n   * @file html-media-source.js\n   */\n\n  /**\n   * Our MediaSource implementation in HTML, mimics native\n   * MediaSource where/if possible.\n   *\n   * @link https://developer.mozilla.org/en-US/docs/Web/API/MediaSource\n   * @class HtmlMediaSource\n   * @extends videojs.EventTarget\n   */\n\n\n  var HtmlMediaSource = function (_videojs$EventTarget) {\n    inherits$1(HtmlMediaSource, _videojs$EventTarget);\n\n    function HtmlMediaSource() {\n      classCallCheck$1(this, HtmlMediaSource);\n\n      var _this = possibleConstructorReturn$1(this, (HtmlMediaSource.__proto__ || Object.getPrototypeOf(HtmlMediaSource)).call(this));\n\n      var property = void 0;\n      _this.nativeMediaSource_ = new window$1.MediaSource(); // delegate to the native MediaSource's methods by default\n\n      for (property in _this.nativeMediaSource_) {\n        if (!(property in HtmlMediaSource.prototype) && typeof _this.nativeMediaSource_[property] === 'function') {\n          _this[property] = _this.nativeMediaSource_[property].bind(_this.nativeMediaSource_);\n        }\n      } // emulate `duration` and `seekable` until seeking can be\n      // handled uniformly for live streams\n      // see https://github.com/w3c/media-source/issues/5\n\n\n      _this.duration_ = NaN;\n      Object.defineProperty(_this, 'duration', {\n        get: function get$$1() {\n          if (this.duration_ === Infinity) {\n            return this.duration_;\n          }\n\n          return this.nativeMediaSource_.duration;\n        },\n        set: function set$$1(duration) {\n          this.duration_ = duration;\n\n          if (duration !== Infinity) {\n            this.nativeMediaSource_.duration = duration;\n            return;\n          }\n        }\n      });\n      Object.defineProperty(_this, 'seekable', {\n        get: function get$$1() {\n          if (this.duration_ === Infinity) {\n            return videojs$1.createTimeRanges([[0, this.nativeMediaSource_.duration]]);\n          }\n\n          return this.nativeMediaSource_.seekable;\n        }\n      });\n      Object.defineProperty(_this, 'readyState', {\n        get: function get$$1() {\n          return this.nativeMediaSource_.readyState;\n        }\n      });\n      Object.defineProperty(_this, 'activeSourceBuffers', {\n        get: function get$$1() {\n          return this.activeSourceBuffers_;\n        }\n      }); // the list of virtual and native SourceBuffers created by this\n      // MediaSource\n\n      _this.sourceBuffers = [];\n      _this.activeSourceBuffers_ = [];\n      /**\n       * update the list of active source buffers based upon various\n       * imformation from HLS and video.js\n       *\n       * @private\n       */\n\n      _this.updateActiveSourceBuffers_ = function () {\n        // Retain the reference but empty the array\n        _this.activeSourceBuffers_.length = 0; // If there is only one source buffer, then it will always be active and audio will\n        // be disabled based on the codec of the source buffer\n\n        if (_this.sourceBuffers.length === 1) {\n          var sourceBuffer = _this.sourceBuffers[0];\n          sourceBuffer.appendAudioInitSegment_ = true;\n          sourceBuffer.audioDisabled_ = !sourceBuffer.audioCodec_;\n\n          _this.activeSourceBuffers_.push(sourceBuffer);\n\n          return;\n        } // There are 2 source buffers, a combined (possibly video only) source buffer and\n        // and an audio only source buffer.\n        // By default, the audio in the combined virtual source buffer is enabled\n        // and the audio-only source buffer (if it exists) is disabled.\n\n\n        var disableCombined = false;\n        var disableAudioOnly = true; // TODO: maybe we can store the sourcebuffers on the track objects?\n        // safari may do something like this\n\n        for (var i = 0; i < _this.player_.audioTracks().length; i++) {\n          var track = _this.player_.audioTracks()[i];\n\n          if (track.enabled && track.kind !== 'main') {\n            // The enabled track is an alternate audio track so disable the audio in\n            // the combined source buffer and enable the audio-only source buffer.\n            disableCombined = true;\n            disableAudioOnly = false;\n            break;\n          }\n        }\n\n        _this.sourceBuffers.forEach(function (sourceBuffer, index) {\n          /* eslinst-disable */\n          // TODO once codecs are required, we can switch to using the codecs to determine\n          //      what stream is the video stream, rather than relying on videoTracks\n\n          /* eslinst-enable */\n          sourceBuffer.appendAudioInitSegment_ = true;\n\n          if (sourceBuffer.videoCodec_ && sourceBuffer.audioCodec_) {\n            // combined\n            sourceBuffer.audioDisabled_ = disableCombined;\n          } else if (sourceBuffer.videoCodec_ && !sourceBuffer.audioCodec_) {\n            // If the \"combined\" source buffer is video only, then we do not want\n            // disable the audio-only source buffer (this is mostly for demuxed\n            // audio and video hls)\n            sourceBuffer.audioDisabled_ = true;\n            disableAudioOnly = false;\n          } else if (!sourceBuffer.videoCodec_ && sourceBuffer.audioCodec_) {\n            // audio only\n            // In the case of audio only with alternate audio and disableAudioOnly is true\n            // this means we want to disable the audio on the alternate audio sourcebuffer\n            // but not the main \"combined\" source buffer. The \"combined\" source buffer is\n            // always at index 0, so this ensures audio won't be disabled in both source\n            // buffers.\n            sourceBuffer.audioDisabled_ = index ? disableAudioOnly : !disableAudioOnly;\n\n            if (sourceBuffer.audioDisabled_) {\n              return;\n            }\n          }\n\n          _this.activeSourceBuffers_.push(sourceBuffer);\n        });\n      };\n\n      _this.onPlayerMediachange_ = function () {\n        _this.sourceBuffers.forEach(function (sourceBuffer) {\n          sourceBuffer.appendAudioInitSegment_ = true;\n        });\n      };\n\n      _this.onHlsReset_ = function () {\n        _this.sourceBuffers.forEach(function (sourceBuffer) {\n          if (sourceBuffer.transmuxer_) {\n            sourceBuffer.transmuxer_.postMessage({\n              action: 'resetCaptions'\n            });\n          }\n        });\n      };\n\n      _this.onHlsSegmentTimeMapping_ = function (event) {\n        _this.sourceBuffers.forEach(function (buffer) {\n          return buffer.timeMapping_ = event.mapping;\n        });\n      }; // Re-emit MediaSource events on the polyfill\n\n\n      ['sourceopen', 'sourceclose', 'sourceended'].forEach(function (eventName) {\n        this.nativeMediaSource_.addEventListener(eventName, this.trigger.bind(this));\n      }, _this); // capture the associated player when the MediaSource is\n      // successfully attached\n\n      _this.on('sourceopen', function (event) {\n        // Get the player this MediaSource is attached to\n        var video = document.querySelector('[src=\"' + _this.url_ + '\"]');\n\n        if (!video) {\n          return;\n        }\n\n        _this.player_ = videojs$1(video.parentNode);\n\n        if (!_this.player_) {\n          return;\n        } // hls-reset is fired by videojs.Hls on to the tech after the main SegmentLoader\n        // resets its state and flushes the buffer\n\n\n        _this.player_.tech_.on('hls-reset', _this.onHlsReset_); // hls-segment-time-mapping is fired by videojs.Hls on to the tech after the main\n        // SegmentLoader inspects an MTS segment and has an accurate stream to display\n        // time mapping\n\n\n        _this.player_.tech_.on('hls-segment-time-mapping', _this.onHlsSegmentTimeMapping_);\n\n        if (_this.player_.audioTracks && _this.player_.audioTracks()) {\n          _this.player_.audioTracks().on('change', _this.updateActiveSourceBuffers_);\n\n          _this.player_.audioTracks().on('addtrack', _this.updateActiveSourceBuffers_);\n\n          _this.player_.audioTracks().on('removetrack', _this.updateActiveSourceBuffers_);\n        }\n\n        _this.player_.on('mediachange', _this.onPlayerMediachange_);\n      });\n\n      _this.on('sourceended', function (event) {\n        var duration = durationOfVideo(_this.duration);\n\n        for (var i = 0; i < _this.sourceBuffers.length; i++) {\n          var sourcebuffer = _this.sourceBuffers[i];\n          var cues = sourcebuffer.metadataTrack_ && sourcebuffer.metadataTrack_.cues;\n\n          if (cues && cues.length) {\n            cues[cues.length - 1].endTime = duration;\n          }\n        }\n      }); // explicitly terminate any WebWorkers that were created\n      // by SourceHandlers\n\n\n      _this.on('sourceclose', function (event) {\n        this.sourceBuffers.forEach(function (sourceBuffer) {\n          if (sourceBuffer.transmuxer_) {\n            sourceBuffer.transmuxer_.terminate();\n          }\n        });\n        this.sourceBuffers.length = 0;\n\n        if (!this.player_) {\n          return;\n        }\n\n        if (this.player_.audioTracks && this.player_.audioTracks()) {\n          this.player_.audioTracks().off('change', this.updateActiveSourceBuffers_);\n          this.player_.audioTracks().off('addtrack', this.updateActiveSourceBuffers_);\n          this.player_.audioTracks().off('removetrack', this.updateActiveSourceBuffers_);\n        } // We can only change this if the player hasn't been disposed of yet\n        // because `off` eventually tries to use the el_ property. If it has\n        // been disposed of, then don't worry about it because there are no\n        // event handlers left to unbind anyway\n\n\n        if (this.player_.el_) {\n          this.player_.off('mediachange', this.onPlayerMediachange_);\n        }\n\n        if (this.player_.tech_ && this.player_.tech_.el_) {\n          this.player_.tech_.off('hls-reset', this.onHlsReset_);\n          this.player_.tech_.off('hls-segment-time-mapping', this.onHlsSegmentTimeMapping_);\n        }\n      });\n\n      return _this;\n    }\n    /**\n     * Add a range that that can now be seeked to.\n     *\n     * @param {Double} start where to start the addition\n     * @param {Double} end where to end the addition\n     * @private\n     */\n\n\n    createClass$1(HtmlMediaSource, [{\n      key: 'addSeekableRange_',\n      value: function addSeekableRange_(start, end) {\n        var error = void 0;\n\n        if (this.duration !== Infinity) {\n          error = new Error('MediaSource.addSeekableRange() can only be invoked ' + 'when the duration is Infinity');\n          error.name = 'InvalidStateError';\n          error.code = 11;\n          throw error;\n        }\n\n        if (end > this.nativeMediaSource_.duration || isNaN(this.nativeMediaSource_.duration)) {\n          this.nativeMediaSource_.duration = end;\n        }\n      }\n      /**\n       * Add a source buffer to the media source.\n       *\n       * @link https://developer.mozilla.org/en-US/docs/Web/API/MediaSource/addSourceBuffer\n       * @param {String} type the content-type of the content\n       * @return {Object} the created source buffer\n       */\n\n    }, {\n      key: 'addSourceBuffer',\n      value: function addSourceBuffer(type) {\n        var buffer = void 0;\n        var parsedType = parseContentType(type); // Create a VirtualSourceBuffer to transmux MPEG-2 transport\n        // stream segments into fragmented MP4s\n\n        if (/^(video|audio)\\/mp2t$/i.test(parsedType.type)) {\n          var codecs = [];\n\n          if (parsedType.parameters && parsedType.parameters.codecs) {\n            codecs = parsedType.parameters.codecs.split(',');\n            codecs = translateLegacyCodecs(codecs);\n            codecs = codecs.filter(function (codec) {\n              return isAudioCodec(codec) || isVideoCodec(codec);\n            });\n          }\n\n          if (codecs.length === 0) {\n            codecs = ['avc1.4d400d', 'mp4a.40.2'];\n          }\n\n          buffer = new VirtualSourceBuffer(this, codecs);\n\n          if (this.sourceBuffers.length !== 0) {\n            // If another VirtualSourceBuffer already exists, then we are creating a\n            // SourceBuffer for an alternate audio track and therefore we know that\n            // the source has both an audio and video track.\n            // That means we should trigger the manual creation of the real\n            // SourceBuffers instead of waiting for the transmuxer to return data\n            this.sourceBuffers[0].createRealSourceBuffers_();\n            buffer.createRealSourceBuffers_(); // Automatically disable the audio on the first source buffer if\n            // a second source buffer is ever created\n\n            this.sourceBuffers[0].audioDisabled_ = true;\n          }\n        } else {\n          // delegate to the native implementation\n          buffer = this.nativeMediaSource_.addSourceBuffer(type);\n        }\n\n        this.sourceBuffers.push(buffer);\n        return buffer;\n      }\n    }]);\n    return HtmlMediaSource;\n  }(videojs$1.EventTarget);\n  /**\n   * @file videojs-contrib-media-sources.js\n   */\n\n\n  var urlCount = 0; // ------------\n  // Media Source\n  // ------------\n  // store references to the media sources so they can be connected\n  // to a video element (a swf object)\n  // TODO: can we store this somewhere local to this module?\n\n  videojs$1.mediaSources = {};\n  /**\n   * Provide a method for a swf object to notify JS that a\n   * media source is now open.\n   *\n   * @param {String} msObjectURL string referencing the MSE Object URL\n   * @param {String} swfId the swf id\n   */\n\n  var open = function open(msObjectURL, swfId) {\n    var mediaSource = videojs$1.mediaSources[msObjectURL];\n\n    if (mediaSource) {\n      mediaSource.trigger({\n        type: 'sourceopen',\n        swfId: swfId\n      });\n    } else {\n      throw new Error('Media Source not found (Video.js)');\n    }\n  };\n  /**\n   * Check to see if the native MediaSource object exists and supports\n   * an MP4 container with both H.264 video and AAC-LC audio.\n   *\n   * @return {Boolean} if  native media sources are supported\n   */\n\n\n  var supportsNativeMediaSources = function supportsNativeMediaSources() {\n    return !!window$1.MediaSource && !!window$1.MediaSource.isTypeSupported && window$1.MediaSource.isTypeSupported('video/mp4;codecs=\"avc1.4d400d,mp4a.40.2\"');\n  };\n  /**\n   * An emulation of the MediaSource API so that we can support\n   * native and non-native functionality. returns an instance of\n   * HtmlMediaSource.\n   *\n   * @link https://developer.mozilla.org/en-US/docs/Web/API/MediaSource/MediaSource\n   */\n\n\n  var MediaSource = function MediaSource() {\n    this.MediaSource = {\n      open: open,\n      supportsNativeMediaSources: supportsNativeMediaSources\n    };\n\n    if (supportsNativeMediaSources()) {\n      return new HtmlMediaSource();\n    }\n\n    throw new Error('Cannot use create a virtual MediaSource for this video');\n  };\n\n  MediaSource.open = open;\n  MediaSource.supportsNativeMediaSources = supportsNativeMediaSources;\n  /**\n   * A wrapper around the native URL for our MSE object\n   * implementation, this object is exposed under videojs.URL\n   *\n   * @link https://developer.mozilla.org/en-US/docs/Web/API/URL/URL\n   */\n\n  var URL$1 = {\n    /**\n     * A wrapper around the native createObjectURL for our objects.\n     * This function maps a native or emulated mediaSource to a blob\n     * url so that it can be loaded into video.js\n     *\n     * @link https://developer.mozilla.org/en-US/docs/Web/API/URL/createObjectURL\n     * @param {MediaSource} object the object to create a blob url to\n     */\n    createObjectURL: function createObjectURL(object) {\n      var objectUrlPrefix = 'blob:vjs-media-source/';\n      var url = void 0; // use the native MediaSource to generate an object URL\n\n      if (object instanceof HtmlMediaSource) {\n        url = window$1.URL.createObjectURL(object.nativeMediaSource_);\n        object.url_ = url;\n        return url;\n      } // if the object isn't an emulated MediaSource, delegate to the\n      // native implementation\n\n\n      if (!(object instanceof HtmlMediaSource)) {\n        url = window$1.URL.createObjectURL(object);\n        object.url_ = url;\n        return url;\n      } // build a URL that can be used to map back to the emulated\n      // MediaSource\n\n\n      url = objectUrlPrefix + urlCount;\n      urlCount++; // setup the mapping back to object\n\n      videojs$1.mediaSources[url] = object;\n      return url;\n    }\n  };\n  videojs$1.MediaSource = MediaSource;\n  videojs$1.URL = URL$1;\n  var EventTarget$1$1 = videojs$1.EventTarget,\n      mergeOptions$2 = videojs$1.mergeOptions;\n  /**\n   * Returns a new master manifest that is the result of merging an updated master manifest\n   * into the original version.\n   *\n   * @param {Object} oldMaster\n   *        The old parsed mpd object\n   * @param {Object} newMaster\n   *        The updated parsed mpd object\n   * @return {Object}\n   *         A new object representing the original master manifest with the updated media\n   *         playlists merged in\n   */\n\n  var updateMaster$1 = function updateMaster$$1(oldMaster, newMaster) {\n    var update = mergeOptions$2(oldMaster, {\n      // These are top level properties that can be updated\n      duration: newMaster.duration,\n      minimumUpdatePeriod: newMaster.minimumUpdatePeriod\n    }); // First update the playlists in playlist list\n\n    for (var i = 0; i < newMaster.playlists.length; i++) {\n      var playlistUpdate = updateMaster(update, newMaster.playlists[i]);\n\n      if (playlistUpdate) {\n        update = playlistUpdate;\n      }\n    } // Then update media group playlists\n\n\n    forEachMediaGroup(newMaster, function (properties, type, group, label) {\n      if (properties.playlists && properties.playlists.length) {\n        var uri = properties.playlists[0].uri;\n\n        var _playlistUpdate = updateMaster(update, properties.playlists[0]);\n\n        if (_playlistUpdate) {\n          update = _playlistUpdate; // update the playlist reference within media groups\n\n          update.mediaGroups[type][group][label].playlists[0] = update.playlists[uri];\n        }\n      }\n    });\n    return update;\n  };\n\n  var DashPlaylistLoader = function (_EventTarget) {\n    inherits$1(DashPlaylistLoader, _EventTarget); // DashPlaylistLoader must accept either a src url or a playlist because subsequent\n    // playlist loader setups from media groups will expect to be able to pass a playlist\n    // (since there aren't external URLs to media playlists with DASH)\n\n    function DashPlaylistLoader(srcUrlOrPlaylist, hls, withCredentials, masterPlaylistLoader) {\n      classCallCheck$1(this, DashPlaylistLoader);\n\n      var _this = possibleConstructorReturn$1(this, (DashPlaylistLoader.__proto__ || Object.getPrototypeOf(DashPlaylistLoader)).call(this));\n\n      _this.hls_ = hls;\n      _this.withCredentials = withCredentials;\n\n      if (!srcUrlOrPlaylist) {\n        throw new Error('A non-empty playlist URL or playlist is required');\n      } // event naming?\n\n\n      _this.on('minimumUpdatePeriod', function () {\n        _this.refreshXml_();\n      }); // live playlist staleness timeout\n\n\n      _this.on('mediaupdatetimeout', function () {\n        _this.refreshMedia_();\n      }); // initialize the loader state\n\n\n      if (typeof srcUrlOrPlaylist === 'string') {\n        _this.srcUrl = srcUrlOrPlaylist;\n        _this.state = 'HAVE_NOTHING';\n        return possibleConstructorReturn$1(_this);\n      }\n\n      _this.masterPlaylistLoader_ = masterPlaylistLoader;\n      _this.state = 'HAVE_METADATA';\n      _this.started = true; // we only should have one playlist so select it\n\n      _this.media(srcUrlOrPlaylist); // trigger async to mimic behavior of HLS, where it must request a playlist\n\n\n      window$1.setTimeout(function () {\n        _this.trigger('loadedmetadata');\n      }, 0);\n      return _this;\n    }\n\n    createClass$1(DashPlaylistLoader, [{\n      key: 'dispose',\n      value: function dispose() {\n        this.stopRequest();\n        window$1.clearTimeout(this.mediaUpdateTimeout);\n      }\n    }, {\n      key: 'stopRequest',\n      value: function stopRequest() {\n        if (this.request) {\n          var oldRequest = this.request;\n          this.request = null;\n          oldRequest.onreadystatechange = null;\n          oldRequest.abort();\n        }\n      }\n    }, {\n      key: 'media',\n      value: function media(playlist) {\n        // getter\n        if (!playlist) {\n          return this.media_;\n        } // setter\n\n\n        if (this.state === 'HAVE_NOTHING') {\n          throw new Error('Cannot switch media playlist from ' + this.state);\n        }\n\n        var startingState = this.state; // find the playlist object if the target playlist has been specified by URI\n\n        if (typeof playlist === 'string') {\n          if (!this.master.playlists[playlist]) {\n            throw new Error('Unknown playlist URI: ' + playlist);\n          }\n\n          playlist = this.master.playlists[playlist];\n        }\n\n        var mediaChange = !this.media_ || playlist.uri !== this.media_.uri;\n        this.state = 'HAVE_METADATA'; // switching to the active playlist is a no-op\n\n        if (!mediaChange) {\n          return;\n        } // switching from an already loaded playlist\n\n\n        if (this.media_) {\n          this.trigger('mediachanging');\n        }\n\n        this.media_ = playlist;\n        this.refreshMedia_(); // trigger media change if the active media has been updated\n\n        if (startingState !== 'HAVE_MASTER') {\n          this.trigger('mediachange');\n        }\n      }\n    }, {\n      key: 'pause',\n      value: function pause() {\n        this.stopRequest();\n        window$1.clearTimeout(this.mediaUpdateTimeout);\n\n        if (this.state === 'HAVE_NOTHING') {\n          // If we pause the loader before any data has been retrieved, its as if we never\n          // started, so reset to an unstarted state.\n          this.started = false;\n        }\n      }\n    }, {\n      key: 'load',\n      value: function load(isFinalRendition) {\n        var _this2 = this;\n\n        window$1.clearTimeout(this.mediaUpdateTimeout);\n        var media = this.media();\n\n        if (isFinalRendition) {\n          var delay = media ? media.targetDuration / 2 * 1000 : 5 * 1000;\n          this.mediaUpdateTimeout = window$1.setTimeout(function () {\n            return _this2.load();\n          }, delay);\n          return;\n        } // because the playlists are internal to the manifest, load should either load the\n        // main manifest, or do nothing but trigger an event\n\n\n        if (!this.started) {\n          this.start();\n          return;\n        }\n\n        this.trigger('loadedplaylist');\n      }\n      /**\n       * Parses the master xml string and updates playlist uri references\n       *\n       * @return {Object}\n       *         The parsed mpd manifest object\n       */\n\n    }, {\n      key: 'parseMasterXml',\n      value: function parseMasterXml() {\n        var master = parse(this.masterXml_, {\n          manifestUri: this.srcUrl,\n          clientOffset: this.clientOffset_\n        });\n        master.uri = this.srcUrl; // Set up phony URIs for the playlists since we won't have external URIs for DASH\n        // but reference playlists by their URI throughout the project\n        // TODO: Should we create the dummy uris in mpd-parser as well (leaning towards yes).\n\n        for (var i = 0; i < master.playlists.length; i++) {\n          var phonyUri = 'placeholder-uri-' + i;\n          master.playlists[i].uri = phonyUri; // set up by URI references\n\n          master.playlists[phonyUri] = master.playlists[i];\n        } // set up phony URIs for the media group playlists since we won't have external\n        // URIs for DASH but reference playlists by their URI throughout the project\n\n\n        forEachMediaGroup(master, function (properties, mediaType, groupKey, labelKey) {\n          if (properties.playlists && properties.playlists.length) {\n            var _phonyUri = 'placeholder-uri-' + mediaType + '-' + groupKey + '-' + labelKey;\n\n            properties.playlists[0].uri = _phonyUri; // setup URI references\n\n            master.playlists[_phonyUri] = properties.playlists[0];\n          }\n        });\n        setupMediaPlaylists(master);\n        resolveMediaGroupUris(master);\n        return master;\n      }\n    }, {\n      key: 'start',\n      value: function start() {\n        var _this3 = this;\n\n        this.started = true; // request the specified URL\n\n        this.request = this.hls_.xhr({\n          uri: this.srcUrl,\n          withCredentials: this.withCredentials\n        }, function (error, req) {\n          // disposed\n          if (!_this3.request) {\n            return;\n          } // clear the loader's request reference\n\n\n          _this3.request = null;\n\n          if (error) {\n            _this3.error = {\n              status: req.status,\n              message: 'DASH playlist request error at URL: ' + _this3.srcUrl,\n              responseText: req.responseText,\n              // MEDIA_ERR_NETWORK\n              code: 2\n            };\n\n            if (_this3.state === 'HAVE_NOTHING') {\n              _this3.started = false;\n            }\n\n            return _this3.trigger('error');\n          }\n\n          _this3.masterXml_ = req.responseText;\n\n          if (req.responseHeaders && req.responseHeaders.date) {\n            _this3.masterLoaded_ = Date.parse(req.responseHeaders.date);\n          } else {\n            _this3.masterLoaded_ = Date.now();\n          }\n\n          _this3.syncClientServerClock_(_this3.onClientServerClockSync_.bind(_this3));\n        });\n      }\n      /**\n       * Parses the master xml for UTCTiming node to sync the client clock to the server\n       * clock. If the UTCTiming node requires a HEAD or GET request, that request is made.\n       *\n       * @param {Function} done\n       *        Function to call when clock sync has completed\n       */\n\n    }, {\n      key: 'syncClientServerClock_',\n      value: function syncClientServerClock_(done) {\n        var _this4 = this;\n\n        var utcTiming = parseUTCTiming(this.masterXml_); // No UTCTiming element found in the mpd. Use Date header from mpd request as the\n        // server clock\n\n        if (utcTiming === null) {\n          this.clientOffset_ = this.masterLoaded_ - Date.now();\n          return done();\n        }\n\n        if (utcTiming.method === 'DIRECT') {\n          this.clientOffset_ = utcTiming.value - Date.now();\n          return done();\n        }\n\n        this.request = this.hls_.xhr({\n          uri: resolveUrl$1(this.srcUrl, utcTiming.value),\n          method: utcTiming.method,\n          withCredentials: this.withCredentials\n        }, function (error, req) {\n          // disposed\n          if (!_this4.request) {\n            return;\n          }\n\n          if (error) {\n            // sync request failed, fall back to using date header from mpd\n            // TODO: log warning\n            _this4.clientOffset_ = _this4.masterLoaded_ - Date.now();\n            return done();\n          }\n\n          var serverTime = void 0;\n\n          if (utcTiming.method === 'HEAD') {\n            if (!req.responseHeaders || !req.responseHeaders.date) {\n              // expected date header not preset, fall back to using date header from mpd\n              // TODO: log warning\n              serverTime = _this4.masterLoaded_;\n            } else {\n              serverTime = Date.parse(req.responseHeaders.date);\n            }\n          } else {\n            serverTime = Date.parse(req.responseText);\n          }\n\n          _this4.clientOffset_ = serverTime - Date.now();\n          done();\n        });\n      }\n      /**\n       * Handler for after client/server clock synchronization has happened. Sets up\n       * xml refresh timer if specificed by the manifest.\n       */\n\n    }, {\n      key: 'onClientServerClockSync_',\n      value: function onClientServerClockSync_() {\n        var _this5 = this;\n\n        this.master = this.parseMasterXml();\n        this.state = 'HAVE_MASTER';\n        this.trigger('loadedplaylist');\n\n        if (!this.media_) {\n          // no media playlist was specifically selected so start\n          // from the first listed one\n          this.media(this.master.playlists[0]);\n        } // trigger loadedmetadata to resolve setup of media groups\n        // trigger async to mimic behavior of HLS, where it must request a playlist\n\n\n        window$1.setTimeout(function () {\n          _this5.trigger('loadedmetadata');\n        }, 0); // TODO: minimumUpdatePeriod can have a value of 0. Currently the manifest will not\n        // be refreshed when this is the case. The inter-op guide says that when the\n        // minimumUpdatePeriod is 0, the manifest should outline all currently available\n        // segments, but future segments may require an update. I think a good solution\n        // would be to update the manifest at the same rate that the media playlists\n        // are \"refreshed\", i.e. every targetDuration.\n\n        if (this.master.minimumUpdatePeriod) {\n          window$1.setTimeout(function () {\n            _this5.trigger('minimumUpdatePeriod');\n          }, this.master.minimumUpdatePeriod);\n        }\n      }\n      /**\n       * Sends request to refresh the master xml and updates the parsed master manifest\n       * TODO: Does the client offset need to be recalculated when the xml is refreshed?\n       */\n\n    }, {\n      key: 'refreshXml_',\n      value: function refreshXml_() {\n        var _this6 = this;\n\n        this.request = this.hls_.xhr({\n          uri: this.srcUrl,\n          withCredentials: this.withCredentials\n        }, function (error, req) {\n          // disposed\n          if (!_this6.request) {\n            return;\n          } // clear the loader's request reference\n\n\n          _this6.request = null;\n\n          if (error) {\n            _this6.error = {\n              status: req.status,\n              message: 'DASH playlist request error at URL: ' + _this6.srcUrl,\n              responseText: req.responseText,\n              // MEDIA_ERR_NETWORK\n              code: 2\n            };\n\n            if (_this6.state === 'HAVE_NOTHING') {\n              _this6.started = false;\n            }\n\n            return _this6.trigger('error');\n          }\n\n          _this6.masterXml_ = req.responseText;\n\n          var newMaster = _this6.parseMasterXml();\n\n          _this6.master = updateMaster$1(_this6.master, newMaster);\n          window$1.setTimeout(function () {\n            _this6.trigger('minimumUpdatePeriod');\n          }, _this6.master.minimumUpdatePeriod);\n        });\n      }\n      /**\n       * Refreshes the media playlist by re-parsing the master xml and updating playlist\n       * references. If this is an alternate loader, the updated parsed manifest is retrieved\n       * from the master loader.\n       */\n\n    }, {\n      key: 'refreshMedia_',\n      value: function refreshMedia_() {\n        var _this7 = this;\n\n        var oldMaster = void 0;\n        var newMaster = void 0;\n\n        if (this.masterPlaylistLoader_) {\n          oldMaster = this.masterPlaylistLoader_.master;\n          newMaster = this.masterPlaylistLoader_.parseMasterXml();\n        } else {\n          oldMaster = this.master;\n          newMaster = this.parseMasterXml();\n        }\n\n        var updatedMaster = updateMaster$1(oldMaster, newMaster);\n\n        if (updatedMaster) {\n          if (this.masterPlaylistLoader_) {\n            this.masterPlaylistLoader_.master = updatedMaster;\n          } else {\n            this.master = updatedMaster;\n          }\n\n          this.media_ = updatedMaster.playlists[this.media_.uri];\n        } else {\n          this.trigger('playlistunchanged');\n        }\n\n        if (!this.media().endList) {\n          this.mediaUpdateTimeout = window$1.setTimeout(function () {\n            _this7.trigger('mediaupdatetimeout');\n          }, refreshDelay(this.media(), !!updatedMaster));\n        }\n\n        this.trigger('loadedplaylist');\n      }\n    }]);\n    return DashPlaylistLoader;\n  }(EventTarget$1$1);\n\n  var logger = function logger(source) {\n    if (videojs$1.log.debug) {\n      return videojs$1.log.debug.bind(videojs$1, 'VHS:', source + ' >');\n    }\n\n    return function () {};\n  };\n\n  function noop$1() {}\n  /**\n   * @file source-updater.js\n   */\n\n  /**\n   * A queue of callbacks to be serialized and applied when a\n   * MediaSource and its associated SourceBuffers are not in the\n   * updating state. It is used by the segment loader to update the\n   * underlying SourceBuffers when new data is loaded, for instance.\n   *\n   * @class SourceUpdater\n   * @param {MediaSource} mediaSource the MediaSource to create the\n   * SourceBuffer from\n   * @param {String} mimeType the desired MIME type of the underlying\n   * SourceBuffer\n   * @param {Object} sourceBufferEmitter an event emitter that fires when a source buffer is\n   * added to the media source\n   */\n\n\n  var SourceUpdater = function () {\n    function SourceUpdater(mediaSource, mimeType, type, sourceBufferEmitter) {\n      classCallCheck$1(this, SourceUpdater);\n      this.callbacks_ = [];\n      this.pendingCallback_ = null;\n      this.timestampOffset_ = 0;\n      this.mediaSource = mediaSource;\n      this.processedAppend_ = false;\n      this.type_ = type;\n      this.mimeType_ = mimeType;\n      this.logger_ = logger('SourceUpdater[' + type + '][' + mimeType + ']');\n\n      if (mediaSource.readyState === 'closed') {\n        mediaSource.addEventListener('sourceopen', this.createSourceBuffer_.bind(this, mimeType, sourceBufferEmitter));\n      } else {\n        this.createSourceBuffer_(mimeType, sourceBufferEmitter);\n      }\n    }\n\n    createClass$1(SourceUpdater, [{\n      key: 'createSourceBuffer_',\n      value: function createSourceBuffer_(mimeType, sourceBufferEmitter) {\n        var _this = this;\n\n        this.sourceBuffer_ = this.mediaSource.addSourceBuffer(mimeType);\n        this.logger_('created SourceBuffer');\n\n        if (sourceBufferEmitter) {\n          sourceBufferEmitter.trigger('sourcebufferadded');\n\n          if (this.mediaSource.sourceBuffers.length < 2) {\n            // There's another source buffer we must wait for before we can start updating\n            // our own (or else we can get into a bad state, i.e., appending video/audio data\n            // before the other video/audio source buffer is available and leading to a video\n            // or audio only buffer).\n            sourceBufferEmitter.on('sourcebufferadded', function () {\n              _this.start_();\n            });\n            return;\n          }\n        }\n\n        this.start_();\n      }\n    }, {\n      key: 'start_',\n      value: function start_() {\n        var _this2 = this;\n\n        this.started_ = true; // run completion handlers and process callbacks as updateend\n        // events fire\n\n        this.onUpdateendCallback_ = function () {\n          var pendingCallback = _this2.pendingCallback_;\n          _this2.pendingCallback_ = null;\n\n          _this2.logger_('buffered [' + printableRange(_this2.buffered()) + ']');\n\n          if (pendingCallback) {\n            pendingCallback();\n          }\n\n          _this2.runCallback_();\n        };\n\n        this.sourceBuffer_.addEventListener('updateend', this.onUpdateendCallback_);\n        this.runCallback_();\n      }\n      /**\n       * Aborts the current segment and resets the segment parser.\n       *\n       * @param {Function} done function to call when done\n       * @see http://w3c.github.io/media-source/#widl-SourceBuffer-abort-void\n       */\n\n    }, {\n      key: 'abort',\n      value: function abort(done) {\n        var _this3 = this;\n\n        if (this.processedAppend_) {\n          this.queueCallback_(function () {\n            _this3.sourceBuffer_.abort();\n          }, done);\n        }\n      }\n      /**\n       * Queue an update to append an ArrayBuffer.\n       *\n       * @param {ArrayBuffer} bytes\n       * @param {Function} done the function to call when done\n       * @see http://www.w3.org/TR/media-source/#widl-SourceBuffer-appendBuffer-void-ArrayBuffer-data\n       */\n\n    }, {\n      key: 'appendBuffer',\n      value: function appendBuffer(bytes, done) {\n        var _this4 = this;\n\n        this.processedAppend_ = true;\n        this.queueCallback_(function () {\n          _this4.sourceBuffer_.appendBuffer(bytes);\n        }, done);\n      }\n      /**\n       * Indicates what TimeRanges are buffered in the managed SourceBuffer.\n       *\n       * @see http://www.w3.org/TR/media-source/#widl-SourceBuffer-buffered\n       */\n\n    }, {\n      key: 'buffered',\n      value: function buffered() {\n        if (!this.sourceBuffer_) {\n          return videojs$1.createTimeRanges();\n        }\n\n        return this.sourceBuffer_.buffered;\n      }\n      /**\n       * Queue an update to remove a time range from the buffer.\n       *\n       * @param {Number} start where to start the removal\n       * @param {Number} end where to end the removal\n       * @param {Function} [done=noop] optional callback to be executed when the remove\n       * operation is complete\n       * @see http://www.w3.org/TR/media-source/#widl-SourceBuffer-remove-void-double-start-unrestricted-double-end\n       */\n\n    }, {\n      key: 'remove',\n      value: function remove(start, end) {\n        var _this5 = this;\n\n        var done = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : noop$1;\n\n        if (this.processedAppend_) {\n          this.queueCallback_(function () {\n            _this5.logger_('remove [' + start + ' => ' + end + ']');\n\n            _this5.sourceBuffer_.remove(start, end);\n          }, done);\n        }\n      }\n      /**\n       * Whether the underlying sourceBuffer is updating or not\n       *\n       * @return {Boolean} the updating status of the SourceBuffer\n       */\n\n    }, {\n      key: 'updating',\n      value: function updating() {\n        return !this.sourceBuffer_ || this.sourceBuffer_.updating || this.pendingCallback_;\n      }\n      /**\n       * Set/get the timestampoffset on the SourceBuffer\n       *\n       * @return {Number} the timestamp offset\n       */\n\n    }, {\n      key: 'timestampOffset',\n      value: function timestampOffset(offset) {\n        var _this6 = this;\n\n        if (typeof offset !== 'undefined') {\n          this.queueCallback_(function () {\n            _this6.sourceBuffer_.timestampOffset = offset;\n          });\n          this.timestampOffset_ = offset;\n        }\n\n        return this.timestampOffset_;\n      }\n      /**\n       * Queue a callback to run\n       */\n\n    }, {\n      key: 'queueCallback_',\n      value: function queueCallback_(callback, done) {\n        this.callbacks_.push([callback.bind(this), done]);\n        this.runCallback_();\n      }\n      /**\n       * Run a queued callback\n       */\n\n    }, {\n      key: 'runCallback_',\n      value: function runCallback_() {\n        var callbacks = void 0;\n\n        if (!this.updating() && this.callbacks_.length && this.started_) {\n          callbacks = this.callbacks_.shift();\n          this.pendingCallback_ = callbacks[1];\n          callbacks[0]();\n        }\n      }\n      /**\n       * dispose of the source updater and the underlying sourceBuffer\n       */\n\n    }, {\n      key: 'dispose',\n      value: function dispose() {\n        this.sourceBuffer_.removeEventListener('updateend', this.onUpdateendCallback_);\n\n        if (this.sourceBuffer_ && this.mediaSource.readyState === 'open') {\n          this.sourceBuffer_.abort();\n        }\n      }\n    }]);\n    return SourceUpdater;\n  }();\n\n  var Config = {\n    GOAL_BUFFER_LENGTH: 30,\n    MAX_GOAL_BUFFER_LENGTH: 60,\n    GOAL_BUFFER_LENGTH_RATE: 1,\n    // 0.5 MB/s\n    INITIAL_BANDWIDTH: 4194304,\n    // A fudge factor to apply to advertised playlist bitrates to account for\n    // temporary flucations in client bandwidth\n    BANDWIDTH_VARIANCE: 1.2,\n    // How much of the buffer must be filled before we consider upswitching\n    BUFFER_LOW_WATER_LINE: 0,\n    MAX_BUFFER_LOW_WATER_LINE: 30,\n    BUFFER_LOW_WATER_LINE_RATE: 1\n  };\n  var REQUEST_ERRORS = {\n    FAILURE: 2,\n    TIMEOUT: -101,\n    ABORTED: -102\n  };\n  /**\n   * Turns segment byterange into a string suitable for use in\n   * HTTP Range requests\n   *\n   * @param {Object} byterange - an object with two values defining the start and end\n   *                             of a byte-range\n   */\n\n  var byterangeStr = function byterangeStr(byterange) {\n    var byterangeStart = void 0;\n    var byterangeEnd = void 0; // `byterangeEnd` is one less than `offset + length` because the HTTP range\n    // header uses inclusive ranges\n\n    byterangeEnd = byterange.offset + byterange.length - 1;\n    byterangeStart = byterange.offset;\n    return 'bytes=' + byterangeStart + '-' + byterangeEnd;\n  };\n  /**\n   * Defines headers for use in the xhr request for a particular segment.\n   *\n   * @param {Object} segment - a simplified copy of the segmentInfo object\n   *                           from SegmentLoader\n   */\n\n\n  var segmentXhrHeaders = function segmentXhrHeaders(segment) {\n    var headers = {};\n\n    if (segment.byterange) {\n      headers.Range = byterangeStr(segment.byterange);\n    }\n\n    return headers;\n  };\n  /**\n   * Abort all requests\n   *\n   * @param {Object} activeXhrs - an object that tracks all XHR requests\n   */\n\n\n  var abortAll = function abortAll(activeXhrs) {\n    activeXhrs.forEach(function (xhr) {\n      xhr.abort();\n    });\n  };\n  /**\n   * Gather important bandwidth stats once a request has completed\n   *\n   * @param {Object} request - the XHR request from which to gather stats\n   */\n\n\n  var getRequestStats = function getRequestStats(request) {\n    return {\n      bandwidth: request.bandwidth,\n      bytesReceived: request.bytesReceived || 0,\n      roundTripTime: request.roundTripTime || 0\n    };\n  };\n  /**\n   * If possible gather bandwidth stats as a request is in\n   * progress\n   *\n   * @param {Event} progressEvent - an event object from an XHR's progress event\n   */\n\n\n  var getProgressStats = function getProgressStats(progressEvent) {\n    var request = progressEvent.target;\n    var roundTripTime = Date.now() - request.requestTime;\n    var stats = {\n      bandwidth: Infinity,\n      bytesReceived: 0,\n      roundTripTime: roundTripTime || 0\n    };\n    stats.bytesReceived = progressEvent.loaded; // This can result in Infinity if stats.roundTripTime is 0 but that is ok\n    // because we should only use bandwidth stats on progress to determine when\n    // abort a request early due to insufficient bandwidth\n\n    stats.bandwidth = Math.floor(stats.bytesReceived / stats.roundTripTime * 8 * 1000);\n    return stats;\n  };\n  /**\n   * Handle all error conditions in one place and return an object\n   * with all the information\n   *\n   * @param {Error|null} error - if non-null signals an error occured with the XHR\n   * @param {Object} request -  the XHR request that possibly generated the error\n   */\n\n\n  var handleErrors = function handleErrors(error, request) {\n    if (request.timedout) {\n      return {\n        status: request.status,\n        message: 'HLS request timed-out at URL: ' + request.uri,\n        code: REQUEST_ERRORS.TIMEOUT,\n        xhr: request\n      };\n    }\n\n    if (request.aborted) {\n      return {\n        status: request.status,\n        message: 'HLS request aborted at URL: ' + request.uri,\n        code: REQUEST_ERRORS.ABORTED,\n        xhr: request\n      };\n    }\n\n    if (error) {\n      return {\n        status: request.status,\n        message: 'HLS request errored at URL: ' + request.uri,\n        code: REQUEST_ERRORS.FAILURE,\n        xhr: request\n      };\n    }\n\n    return null;\n  };\n  /**\n   * Handle responses for key data and convert the key data to the correct format\n   * for the decryption step later\n   *\n   * @param {Object} segment - a simplified copy of the segmentInfo object\n   *                           from SegmentLoader\n   * @param {Function} finishProcessingFn - a callback to execute to continue processing\n   *                                        this request\n   */\n\n\n  var handleKeyResponse = function handleKeyResponse(segment, finishProcessingFn) {\n    return function (error, request) {\n      var response = request.response;\n      var errorObj = handleErrors(error, request);\n\n      if (errorObj) {\n        return finishProcessingFn(errorObj, segment);\n      }\n\n      if (response.byteLength !== 16) {\n        return finishProcessingFn({\n          status: request.status,\n          message: 'Invalid HLS key at URL: ' + request.uri,\n          code: REQUEST_ERRORS.FAILURE,\n          xhr: request\n        }, segment);\n      }\n\n      var view = new DataView(response);\n      segment.key.bytes = new Uint32Array([view.getUint32(0), view.getUint32(4), view.getUint32(8), view.getUint32(12)]);\n      return finishProcessingFn(null, segment);\n    };\n  };\n  /**\n   * Handle init-segment responses\n   *\n   * @param {Object} segment - a simplified copy of the segmentInfo object\n   *                           from SegmentLoader\n   * @param {Function} finishProcessingFn - a callback to execute to continue processing\n   *                                        this request\n   */\n\n\n  var handleInitSegmentResponse = function handleInitSegmentResponse(segment, captionParser, finishProcessingFn) {\n    return function (error, request) {\n      var response = request.response;\n      var errorObj = handleErrors(error, request);\n\n      if (errorObj) {\n        return finishProcessingFn(errorObj, segment);\n      } // stop processing if received empty content\n\n\n      if (response.byteLength === 0) {\n        return finishProcessingFn({\n          status: request.status,\n          message: 'Empty HLS segment content at URL: ' + request.uri,\n          code: REQUEST_ERRORS.FAILURE,\n          xhr: request\n        }, segment);\n      }\n\n      segment.map.bytes = new Uint8Array(request.response); // Initialize CaptionParser if it hasn't been yet\n\n      if (!captionParser.isInitialized()) {\n        captionParser.init();\n      }\n\n      segment.map.timescales = probe.timescale(segment.map.bytes);\n      segment.map.videoTrackIds = probe.videoTrackIds(segment.map.bytes);\n      return finishProcessingFn(null, segment);\n    };\n  };\n  /**\n   * Response handler for segment-requests being sure to set the correct\n   * property depending on whether the segment is encryped or not\n   * Also records and keeps track of stats that are used for ABR purposes\n   *\n   * @param {Object} segment - a simplified copy of the segmentInfo object\n   *                           from SegmentLoader\n   * @param {Function} finishProcessingFn - a callback to execute to continue processing\n   *                                        this request\n   */\n\n\n  var handleSegmentResponse = function handleSegmentResponse(segment, captionParser, finishProcessingFn) {\n    return function (error, request) {\n      var response = request.response;\n      var errorObj = handleErrors(error, request);\n      var parsed = void 0;\n\n      if (errorObj) {\n        return finishProcessingFn(errorObj, segment);\n      } // stop processing if received empty content\n\n\n      if (response.byteLength === 0) {\n        return finishProcessingFn({\n          status: request.status,\n          message: 'Empty HLS segment content at URL: ' + request.uri,\n          code: REQUEST_ERRORS.FAILURE,\n          xhr: request\n        }, segment);\n      }\n\n      segment.stats = getRequestStats(request);\n\n      if (segment.key) {\n        segment.encryptedBytes = new Uint8Array(request.response);\n      } else {\n        segment.bytes = new Uint8Array(request.response);\n      } // This is likely an FMP4 and has the init segment.\n      // Run through the CaptionParser in case there are captions.\n\n\n      if (segment.map && segment.map.bytes) {\n        // Initialize CaptionParser if it hasn't been yet\n        if (!captionParser.isInitialized()) {\n          captionParser.init();\n        }\n\n        parsed = captionParser.parse(segment.bytes, segment.map.videoTrackIds, segment.map.timescales);\n\n        if (parsed && parsed.captions) {\n          segment.captionStreams = parsed.captionStreams;\n          segment.fmp4Captions = parsed.captions;\n        }\n      }\n\n      return finishProcessingFn(null, segment);\n    };\n  };\n  /**\n   * Decrypt the segment via the decryption web worker\n   *\n   * @param {WebWorker} decrypter - a WebWorker interface to AES-128 decryption routines\n   * @param {Object} segment - a simplified copy of the segmentInfo object\n   *                           from SegmentLoader\n   * @param {Function} doneFn - a callback that is executed after decryption has completed\n   */\n\n\n  var decryptSegment = function decryptSegment(decrypter, segment, doneFn) {\n    var decryptionHandler = function decryptionHandler(event) {\n      if (event.data.source === segment.requestId) {\n        decrypter.removeEventListener('message', decryptionHandler);\n        var decrypted = event.data.decrypted;\n        segment.bytes = new Uint8Array(decrypted.bytes, decrypted.byteOffset, decrypted.byteLength);\n        return doneFn(null, segment);\n      }\n    };\n\n    decrypter.addEventListener('message', decryptionHandler); // this is an encrypted segment\n    // incrementally decrypt the segment\n\n    decrypter.postMessage(createTransferableMessage({\n      source: segment.requestId,\n      encrypted: segment.encryptedBytes,\n      key: segment.key.bytes,\n      iv: segment.key.iv\n    }), [segment.encryptedBytes.buffer, segment.key.bytes.buffer]);\n  };\n  /**\n   * This function waits for all XHRs to finish (with either success or failure)\n   * before continueing processing via it's callback. The function gathers errors\n   * from each request into a single errors array so that the error status for\n   * each request can be examined later.\n   *\n   * @param {Object} activeXhrs - an object that tracks all XHR requests\n   * @param {WebWorker} decrypter - a WebWorker interface to AES-128 decryption routines\n   * @param {Function} doneFn - a callback that is executed after all resources have been\n   *                            downloaded and any decryption completed\n   */\n\n\n  var waitForCompletion = function waitForCompletion(activeXhrs, decrypter, doneFn) {\n    var count = 0;\n    var didError = false;\n    return function (error, segment) {\n      if (didError) {\n        return;\n      }\n\n      if (error) {\n        didError = true; // If there are errors, we have to abort any outstanding requests\n\n        abortAll(activeXhrs); // Even though the requests above are aborted, and in theory we could wait until we\n        // handle the aborted events from those requests, there are some cases where we may\n        // never get an aborted event. For instance, if the network connection is lost and\n        // there were two requests, the first may have triggered an error immediately, while\n        // the second request remains unsent. In that case, the aborted algorithm will not\n        // trigger an abort: see https://xhr.spec.whatwg.org/#the-abort()-method\n        //\n        // We also can't rely on the ready state of the XHR, since the request that\n        // triggered the connection error may also show as a ready state of 0 (unsent).\n        // Therefore, we have to finish this group of requests immediately after the first\n        // seen error.\n\n        return doneFn(error, segment);\n      }\n\n      count += 1;\n\n      if (count === activeXhrs.length) {\n        // Keep track of when *all* of the requests have completed\n        segment.endOfAllRequests = Date.now();\n\n        if (segment.encryptedBytes) {\n          return decryptSegment(decrypter, segment, doneFn);\n        } // Otherwise, everything is ready just continue\n\n\n        return doneFn(null, segment);\n      }\n    };\n  };\n  /**\n   * Simple progress event callback handler that gathers some stats before\n   * executing a provided callback with the `segment` object\n   *\n   * @param {Object} segment - a simplified copy of the segmentInfo object\n   *                           from SegmentLoader\n   * @param {Function} progressFn - a callback that is executed each time a progress event\n   *                                is received\n   * @param {Event} event - the progress event object from XMLHttpRequest\n   */\n\n\n  var handleProgress = function handleProgress(segment, progressFn) {\n    return function (event) {\n      segment.stats = videojs$1.mergeOptions(segment.stats, getProgressStats(event)); // record the time that we receive the first byte of data\n\n      if (!segment.stats.firstBytesReceivedAt && segment.stats.bytesReceived) {\n        segment.stats.firstBytesReceivedAt = Date.now();\n      }\n\n      return progressFn(event, segment);\n    };\n  };\n  /**\n   * Load all resources and does any processing necessary for a media-segment\n   *\n   * Features:\n   *   decrypts the media-segment if it has a key uri and an iv\n   *   aborts *all* requests if *any* one request fails\n   *\n   * The segment object, at minimum, has the following format:\n   * {\n   *   resolvedUri: String,\n   *   [byterange]: {\n   *     offset: Number,\n   *     length: Number\n   *   },\n   *   [key]: {\n   *     resolvedUri: String\n   *     [byterange]: {\n   *       offset: Number,\n   *       length: Number\n   *     },\n   *     iv: {\n   *       bytes: Uint32Array\n   *     }\n   *   },\n   *   [map]: {\n   *     resolvedUri: String,\n   *     [byterange]: {\n   *       offset: Number,\n   *       length: Number\n   *     },\n   *     [bytes]: Uint8Array\n   *   }\n   * }\n   * ...where [name] denotes optional properties\n   *\n   * @param {Function} xhr - an instance of the xhr wrapper in xhr.js\n   * @param {Object} xhrOptions - the base options to provide to all xhr requests\n   * @param {WebWorker} decryptionWorker - a WebWorker interface to AES-128\n   *                                       decryption routines\n   * @param {Object} segment - a simplified copy of the segmentInfo object\n   *                           from SegmentLoader\n   * @param {Function} progressFn - a callback that receives progress events from the main\n   *                                segment's xhr request\n   * @param {Function} doneFn - a callback that is executed only once all requests have\n   *                            succeeded or failed\n   * @returns {Function} a function that, when invoked, immediately aborts all\n   *                     outstanding requests\n   */\n\n\n  var mediaSegmentRequest = function mediaSegmentRequest(xhr, xhrOptions, decryptionWorker, captionParser, segment, progressFn, doneFn) {\n    var activeXhrs = [];\n    var finishProcessingFn = waitForCompletion(activeXhrs, decryptionWorker, doneFn); // optionally, request the decryption key\n\n    if (segment.key) {\n      var keyRequestOptions = videojs$1.mergeOptions(xhrOptions, {\n        uri: segment.key.resolvedUri,\n        responseType: 'arraybuffer'\n      });\n      var keyRequestCallback = handleKeyResponse(segment, finishProcessingFn);\n      var keyXhr = xhr(keyRequestOptions, keyRequestCallback);\n      activeXhrs.push(keyXhr);\n    } // optionally, request the associated media init segment\n\n\n    if (segment.map && !segment.map.bytes) {\n      var initSegmentOptions = videojs$1.mergeOptions(xhrOptions, {\n        uri: segment.map.resolvedUri,\n        responseType: 'arraybuffer',\n        headers: segmentXhrHeaders(segment.map)\n      });\n      var initSegmentRequestCallback = handleInitSegmentResponse(segment, captionParser, finishProcessingFn);\n      var initSegmentXhr = xhr(initSegmentOptions, initSegmentRequestCallback);\n      activeXhrs.push(initSegmentXhr);\n    }\n\n    var segmentRequestOptions = videojs$1.mergeOptions(xhrOptions, {\n      uri: segment.resolvedUri,\n      responseType: 'arraybuffer',\n      headers: segmentXhrHeaders(segment)\n    });\n    var segmentRequestCallback = handleSegmentResponse(segment, captionParser, finishProcessingFn);\n    var segmentXhr = xhr(segmentRequestOptions, segmentRequestCallback);\n    segmentXhr.addEventListener('progress', handleProgress(segment, progressFn));\n    activeXhrs.push(segmentXhr);\n    return function () {\n      return abortAll(activeXhrs);\n    };\n  }; // Utilities\n\n  /**\n   * Returns the CSS value for the specified property on an element\n   * using `getComputedStyle`. Firefox has a long-standing issue where\n   * getComputedStyle() may return null when running in an iframe with\n   * `display: none`.\n   *\n   * @see https://bugzilla.mozilla.org/show_bug.cgi?id=548397\n   * @param {HTMLElement} el the htmlelement to work on\n   * @param {string} the proprety to get the style for\n   */\n\n\n  var safeGetComputedStyle = function safeGetComputedStyle(el, property) {\n    var result = void 0;\n\n    if (!el) {\n      return '';\n    }\n\n    result = window$1.getComputedStyle(el);\n\n    if (!result) {\n      return '';\n    }\n\n    return result[property];\n  };\n  /**\n   * Resuable stable sort function\n   *\n   * @param {Playlists} array\n   * @param {Function} sortFn Different comparators\n   * @function stableSort\n   */\n\n\n  var stableSort = function stableSort(array, sortFn) {\n    var newArray = array.slice();\n    array.sort(function (left, right) {\n      var cmp = sortFn(left, right);\n\n      if (cmp === 0) {\n        return newArray.indexOf(left) - newArray.indexOf(right);\n      }\n\n      return cmp;\n    });\n  };\n  /**\n   * A comparator function to sort two playlist object by bandwidth.\n   *\n   * @param {Object} left a media playlist object\n   * @param {Object} right a media playlist object\n   * @return {Number} Greater than zero if the bandwidth attribute of\n   * left is greater than the corresponding attribute of right. Less\n   * than zero if the bandwidth of right is greater than left and\n   * exactly zero if the two are equal.\n   */\n\n\n  var comparePlaylistBandwidth = function comparePlaylistBandwidth(left, right) {\n    var leftBandwidth = void 0;\n    var rightBandwidth = void 0;\n\n    if (left.attributes.BANDWIDTH) {\n      leftBandwidth = left.attributes.BANDWIDTH;\n    }\n\n    leftBandwidth = leftBandwidth || window$1.Number.MAX_VALUE;\n\n    if (right.attributes.BANDWIDTH) {\n      rightBandwidth = right.attributes.BANDWIDTH;\n    }\n\n    rightBandwidth = rightBandwidth || window$1.Number.MAX_VALUE;\n    return leftBandwidth - rightBandwidth;\n  };\n  /**\n   * A comparator function to sort two playlist object by resolution (width).\n   * @param {Object} left a media playlist object\n   * @param {Object} right a media playlist object\n   * @return {Number} Greater than zero if the resolution.width attribute of\n   * left is greater than the corresponding attribute of right. Less\n   * than zero if the resolution.width of right is greater than left and\n   * exactly zero if the two are equal.\n   */\n\n\n  var comparePlaylistResolution = function comparePlaylistResolution(left, right) {\n    var leftWidth = void 0;\n    var rightWidth = void 0;\n\n    if (left.attributes.RESOLUTION && left.attributes.RESOLUTION.width) {\n      leftWidth = left.attributes.RESOLUTION.width;\n    }\n\n    leftWidth = leftWidth || window$1.Number.MAX_VALUE;\n\n    if (right.attributes.RESOLUTION && right.attributes.RESOLUTION.width) {\n      rightWidth = right.attributes.RESOLUTION.width;\n    }\n\n    rightWidth = rightWidth || window$1.Number.MAX_VALUE; // NOTE - Fallback to bandwidth sort as appropriate in cases where multiple renditions\n    // have the same media dimensions/ resolution\n\n    if (leftWidth === rightWidth && left.attributes.BANDWIDTH && right.attributes.BANDWIDTH) {\n      return left.attributes.BANDWIDTH - right.attributes.BANDWIDTH;\n    }\n\n    return leftWidth - rightWidth;\n  };\n  /**\n   * Chooses the appropriate media playlist based on bandwidth and player size\n   *\n   * @param {Object} master\n   *        Object representation of the master manifest\n   * @param {Number} playerBandwidth\n   *        Current calculated bandwidth of the player\n   * @param {Number} playerWidth\n   *        Current width of the player element\n   * @param {Number} playerHeight\n   *        Current height of the player element\n   * @param {Boolean} limitRenditionByPlayerDimensions\n   *        True if the player width and height should be used during the selection, false otherwise\n   * @return {Playlist} the highest bitrate playlist less than the\n   * currently detected bandwidth, accounting for some amount of\n   * bandwidth variance\n   */\n\n\n  var simpleSelector = function simpleSelector(master, playerBandwidth, playerWidth, playerHeight, limitRenditionByPlayerDimensions) {\n    // convert the playlists to an intermediary representation to make comparisons easier\n    var sortedPlaylistReps = master.playlists.map(function (playlist) {\n      var width = void 0;\n      var height = void 0;\n      var bandwidth = void 0;\n      width = playlist.attributes.RESOLUTION && playlist.attributes.RESOLUTION.width;\n      height = playlist.attributes.RESOLUTION && playlist.attributes.RESOLUTION.height;\n      bandwidth = playlist.attributes.BANDWIDTH;\n      bandwidth = bandwidth || window$1.Number.MAX_VALUE;\n      return {\n        bandwidth: bandwidth,\n        width: width,\n        height: height,\n        playlist: playlist\n      };\n    });\n    stableSort(sortedPlaylistReps, function (left, right) {\n      return left.bandwidth - right.bandwidth;\n    }); // filter out any playlists that have been excluded due to\n    // incompatible configurations\n\n    sortedPlaylistReps = sortedPlaylistReps.filter(function (rep) {\n      return !Playlist.isIncompatible(rep.playlist);\n    }); // filter out any playlists that have been disabled manually through the representations\n    // api or blacklisted temporarily due to playback errors.\n\n    var enabledPlaylistReps = sortedPlaylistReps.filter(function (rep) {\n      return Playlist.isEnabled(rep.playlist);\n    });\n\n    if (!enabledPlaylistReps.length) {\n      // if there are no enabled playlists, then they have all been blacklisted or disabled\n      // by the user through the representations api. In this case, ignore blacklisting and\n      // fallback to what the user wants by using playlists the user has not disabled.\n      enabledPlaylistReps = sortedPlaylistReps.filter(function (rep) {\n        return !Playlist.isDisabled(rep.playlist);\n      });\n    } // filter out any variant that has greater effective bitrate\n    // than the current estimated bandwidth\n\n\n    var bandwidthPlaylistReps = enabledPlaylistReps.filter(function (rep) {\n      return rep.bandwidth * Config.BANDWIDTH_VARIANCE < playerBandwidth;\n    });\n    var highestRemainingBandwidthRep = bandwidthPlaylistReps[bandwidthPlaylistReps.length - 1]; // get all of the renditions with the same (highest) bandwidth\n    // and then taking the very first element\n\n    var bandwidthBestRep = bandwidthPlaylistReps.filter(function (rep) {\n      return rep.bandwidth === highestRemainingBandwidthRep.bandwidth;\n    })[0]; // if we're not going to limit renditions by player size, make an early decision.\n\n    if (limitRenditionByPlayerDimensions === false) {\n      var _chosenRep = bandwidthBestRep || enabledPlaylistReps[0] || sortedPlaylistReps[0];\n\n      return _chosenRep ? _chosenRep.playlist : null;\n    } // filter out playlists without resolution information\n\n\n    var haveResolution = bandwidthPlaylistReps.filter(function (rep) {\n      return rep.width && rep.height;\n    }); // sort variants by resolution\n\n    stableSort(haveResolution, function (left, right) {\n      return left.width - right.width;\n    }); // if we have the exact resolution as the player use it\n\n    var resolutionBestRepList = haveResolution.filter(function (rep) {\n      return rep.width === playerWidth && rep.height === playerHeight;\n    });\n    highestRemainingBandwidthRep = resolutionBestRepList[resolutionBestRepList.length - 1]; // ensure that we pick the highest bandwidth variant that have exact resolution\n\n    var resolutionBestRep = resolutionBestRepList.filter(function (rep) {\n      return rep.bandwidth === highestRemainingBandwidthRep.bandwidth;\n    })[0];\n    var resolutionPlusOneList = void 0;\n    var resolutionPlusOneSmallest = void 0;\n    var resolutionPlusOneRep = void 0; // find the smallest variant that is larger than the player\n    // if there is no match of exact resolution\n\n    if (!resolutionBestRep) {\n      resolutionPlusOneList = haveResolution.filter(function (rep) {\n        return rep.width > playerWidth || rep.height > playerHeight;\n      }); // find all the variants have the same smallest resolution\n\n      resolutionPlusOneSmallest = resolutionPlusOneList.filter(function (rep) {\n        return rep.width === resolutionPlusOneList[0].width && rep.height === resolutionPlusOneList[0].height;\n      }); // ensure that we also pick the highest bandwidth variant that\n      // is just-larger-than the video player\n\n      highestRemainingBandwidthRep = resolutionPlusOneSmallest[resolutionPlusOneSmallest.length - 1];\n      resolutionPlusOneRep = resolutionPlusOneSmallest.filter(function (rep) {\n        return rep.bandwidth === highestRemainingBandwidthRep.bandwidth;\n      })[0];\n    } // fallback chain of variants\n\n\n    var chosenRep = resolutionPlusOneRep || resolutionBestRep || bandwidthBestRep || enabledPlaylistReps[0] || sortedPlaylistReps[0];\n    return chosenRep ? chosenRep.playlist : null;\n  }; // Playlist Selectors\n\n  /**\n   * Chooses the appropriate media playlist based on the most recent\n   * bandwidth estimate and the player size.\n   *\n   * Expects to be called within the context of an instance of HlsHandler\n   *\n   * @return {Playlist} the highest bitrate playlist less than the\n   * currently detected bandwidth, accounting for some amount of\n   * bandwidth variance\n   */\n\n\n  var lastBandwidthSelector = function lastBandwidthSelector() {\n    return simpleSelector(this.playlists.master, this.systemBandwidth, parseInt(safeGetComputedStyle(this.tech_.el(), 'width'), 10), parseInt(safeGetComputedStyle(this.tech_.el(), 'height'), 10), this.limitRenditionByPlayerDimensions);\n  };\n  /**\n   * Chooses the appropriate media playlist based on the potential to rebuffer\n   *\n   * @param {Object} settings\n   *        Object of information required to use this selector\n   * @param {Object} settings.master\n   *        Object representation of the master manifest\n   * @param {Number} settings.currentTime\n   *        The current time of the player\n   * @param {Number} settings.bandwidth\n   *        Current measured bandwidth\n   * @param {Number} settings.duration\n   *        Duration of the media\n   * @param {Number} settings.segmentDuration\n   *        Segment duration to be used in round trip time calculations\n   * @param {Number} settings.timeUntilRebuffer\n   *        Time left in seconds until the player has to rebuffer\n   * @param {Number} settings.currentTimeline\n   *        The current timeline segments are being loaded from\n   * @param {SyncController} settings.syncController\n   *        SyncController for determining if we have a sync point for a given playlist\n   * @return {Object|null}\n   *         {Object} return.playlist\n   *         The highest bandwidth playlist with the least amount of rebuffering\n   *         {Number} return.rebufferingImpact\n   *         The amount of time in seconds switching to this playlist will rebuffer. A\n   *         negative value means that switching will cause zero rebuffering.\n   */\n\n\n  var minRebufferMaxBandwidthSelector = function minRebufferMaxBandwidthSelector(settings) {\n    var master = settings.master,\n        currentTime = settings.currentTime,\n        bandwidth = settings.bandwidth,\n        duration$$1 = settings.duration,\n        segmentDuration = settings.segmentDuration,\n        timeUntilRebuffer = settings.timeUntilRebuffer,\n        currentTimeline = settings.currentTimeline,\n        syncController = settings.syncController; // filter out any playlists that have been excluded due to\n    // incompatible configurations\n\n    var compatiblePlaylists = master.playlists.filter(function (playlist) {\n      return !Playlist.isIncompatible(playlist);\n    }); // filter out any playlists that have been disabled manually through the representations\n    // api or blacklisted temporarily due to playback errors.\n\n    var enabledPlaylists = compatiblePlaylists.filter(Playlist.isEnabled);\n\n    if (!enabledPlaylists.length) {\n      // if there are no enabled playlists, then they have all been blacklisted or disabled\n      // by the user through the representations api. In this case, ignore blacklisting and\n      // fallback to what the user wants by using playlists the user has not disabled.\n      enabledPlaylists = compatiblePlaylists.filter(function (playlist) {\n        return !Playlist.isDisabled(playlist);\n      });\n    }\n\n    var bandwidthPlaylists = enabledPlaylists.filter(Playlist.hasAttribute.bind(null, 'BANDWIDTH'));\n    var rebufferingEstimates = bandwidthPlaylists.map(function (playlist) {\n      var syncPoint = syncController.getSyncPoint(playlist, duration$$1, currentTimeline, currentTime); // If there is no sync point for this playlist, switching to it will require a\n      // sync request first. This will double the request time\n\n      var numRequests = syncPoint ? 1 : 2;\n      var requestTimeEstimate = Playlist.estimateSegmentRequestTime(segmentDuration, bandwidth, playlist);\n      var rebufferingImpact = requestTimeEstimate * numRequests - timeUntilRebuffer;\n      return {\n        playlist: playlist,\n        rebufferingImpact: rebufferingImpact\n      };\n    });\n    var noRebufferingPlaylists = rebufferingEstimates.filter(function (estimate) {\n      return estimate.rebufferingImpact <= 0;\n    }); // Sort by bandwidth DESC\n\n    stableSort(noRebufferingPlaylists, function (a, b) {\n      return comparePlaylistBandwidth(b.playlist, a.playlist);\n    });\n\n    if (noRebufferingPlaylists.length) {\n      return noRebufferingPlaylists[0];\n    }\n\n    stableSort(rebufferingEstimates, function (a, b) {\n      return a.rebufferingImpact - b.rebufferingImpact;\n    });\n    return rebufferingEstimates[0] || null;\n  };\n  /**\n   * Chooses the appropriate media playlist, which in this case is the lowest bitrate\n   * one with video.  If no renditions with video exist, return the lowest audio rendition.\n   *\n   * Expects to be called within the context of an instance of HlsHandler\n   *\n   * @return {Object|null}\n   *         {Object} return.playlist\n   *         The lowest bitrate playlist that contains a video codec.  If no such rendition\n   *         exists pick the lowest audio rendition.\n   */\n\n\n  var lowestBitrateCompatibleVariantSelector = function lowestBitrateCompatibleVariantSelector() {\n    // filter out any playlists that have been excluded due to\n    // incompatible configurations or playback errors\n    var playlists = this.playlists.master.playlists.filter(Playlist.isEnabled); // Sort ascending by bitrate\n\n    stableSort(playlists, function (a, b) {\n      return comparePlaylistBandwidth(a, b);\n    }); // Parse and assume that playlists with no video codec have no video\n    // (this is not necessarily true, although it is generally true).\n    //\n    // If an entire manifest has no valid videos everything will get filtered\n    // out.\n\n    var playlistsWithVideo = playlists.filter(function (playlist) {\n      return parseCodecs(playlist.attributes.CODECS).videoCodec;\n    });\n    return playlistsWithVideo[0] || null;\n  };\n  /**\n   * Create captions text tracks on video.js if they do not exist\n   *\n   * @param {Object} inbandTextTracks a reference to current inbandTextTracks\n   * @param {Object} tech the video.js tech\n   * @param {Object} captionStreams the caption streams to create\n   * @private\n   */\n\n\n  var createCaptionsTrackIfNotExists = function createCaptionsTrackIfNotExists(inbandTextTracks, tech, captionStreams) {\n    for (var trackId in captionStreams) {\n      if (!inbandTextTracks[trackId]) {\n        tech.trigger({\n          type: 'usage',\n          name: 'hls-608'\n        });\n        var track = tech.textTracks().getTrackById(trackId);\n\n        if (track) {\n          // Resuse an existing track with a CC# id because this was\n          // very likely created by videojs-contrib-hls from information\n          // in the m3u8 for us to use\n          inbandTextTracks[trackId] = track;\n        } else {\n          // Otherwise, create a track with the default `CC#` label and\n          // without a language\n          inbandTextTracks[trackId] = tech.addRemoteTextTrack({\n            kind: 'captions',\n            id: trackId,\n            label: trackId\n          }, false).track;\n        }\n      }\n    }\n  };\n\n  var addCaptionData = function addCaptionData(_ref) {\n    var inbandTextTracks = _ref.inbandTextTracks,\n        captionArray = _ref.captionArray,\n        timestampOffset = _ref.timestampOffset;\n\n    if (!captionArray) {\n      return;\n    }\n\n    var Cue = window.WebKitDataCue || window.VTTCue;\n    captionArray.forEach(function (caption) {\n      var track = caption.stream;\n      var startTime = caption.startTime;\n      var endTime = caption.endTime;\n\n      if (!inbandTextTracks[track]) {\n        return;\n      }\n\n      startTime += timestampOffset;\n      endTime += timestampOffset;\n      inbandTextTracks[track].addCue(new Cue(startTime, endTime, caption.text));\n    });\n  };\n  /**\n   * @file segment-loader.js\n   */\n  // in ms\n\n\n  var CHECK_BUFFER_DELAY = 500;\n  /**\n   * Determines if we should call endOfStream on the media source based\n   * on the state of the buffer or if appened segment was the final\n   * segment in the playlist.\n   *\n   * @param {Object} playlist a media playlist object\n   * @param {Object} mediaSource the MediaSource object\n   * @param {Number} segmentIndex the index of segment we last appended\n   * @returns {Boolean} do we need to call endOfStream on the MediaSource\n   */\n\n  var detectEndOfStream = function detectEndOfStream(playlist, mediaSource, segmentIndex) {\n    if (!playlist || !mediaSource) {\n      return false;\n    }\n\n    var segments = playlist.segments; // determine a few boolean values to help make the branch below easier\n    // to read\n\n    var appendedLastSegment = segmentIndex === segments.length; // if we've buffered to the end of the video, we need to call endOfStream\n    // so that MediaSources can trigger the `ended` event when it runs out of\n    // buffered data instead of waiting for me\n\n    return playlist.endList && mediaSource.readyState === 'open' && appendedLastSegment;\n  };\n\n  var finite = function finite(num) {\n    return typeof num === 'number' && isFinite(num);\n  };\n\n  var illegalMediaSwitch = function illegalMediaSwitch(loaderType, startingMedia, newSegmentMedia) {\n    // Although these checks should most likely cover non 'main' types, for now it narrows\n    // the scope of our checks.\n    if (loaderType !== 'main' || !startingMedia || !newSegmentMedia) {\n      return null;\n    }\n\n    if (!newSegmentMedia.containsAudio && !newSegmentMedia.containsVideo) {\n      return 'Neither audio nor video found in segment.';\n    }\n\n    if (startingMedia.containsVideo && !newSegmentMedia.containsVideo) {\n      return 'Only audio found in segment when we expected video.' + ' We can\\'t switch to audio only from a stream that had video.' + ' To get rid of this message, please add codec information to the manifest.';\n    }\n\n    if (!startingMedia.containsVideo && newSegmentMedia.containsVideo) {\n      return 'Video found in segment when we expected only audio.' + ' We can\\'t switch to a stream with video from an audio only stream.' + ' To get rid of this message, please add codec information to the manifest.';\n    }\n\n    return null;\n  };\n  /**\n   * Calculates a time value that is safe to remove from the back buffer without interupting\n   * playback.\n   *\n   * @param {TimeRange} seekable\n   *        The current seekable range\n   * @param {Number} currentTime\n   *        The current time of the player\n   * @param {Number} targetDuration\n   *        The target duration of the current playlist\n   * @return {Number}\n   *         Time that is safe to remove from the back buffer without interupting playback\n   */\n\n\n  var safeBackBufferTrimTime = function safeBackBufferTrimTime(seekable$$1, currentTime, targetDuration) {\n    var removeToTime = void 0;\n\n    if (seekable$$1.length && seekable$$1.start(0) > 0 && seekable$$1.start(0) < currentTime) {\n      // If we have a seekable range use that as the limit for what can be removed safely\n      removeToTime = seekable$$1.start(0);\n    } else {\n      // otherwise remove anything older than 30 seconds before the current play head\n      removeToTime = currentTime - 30;\n    } // Don't allow removing from the buffer within target duration of current time\n    // to avoid the possibility of removing the GOP currently being played which could\n    // cause playback stalls.\n\n\n    return Math.min(removeToTime, currentTime - targetDuration);\n  };\n\n  var segmentInfoString = function segmentInfoString(segmentInfo) {\n    var _segmentInfo$segment = segmentInfo.segment,\n        start = _segmentInfo$segment.start,\n        end = _segmentInfo$segment.end,\n        _segmentInfo$playlist = segmentInfo.playlist,\n        seq = _segmentInfo$playlist.mediaSequence,\n        id = _segmentInfo$playlist.id,\n        _segmentInfo$playlist2 = _segmentInfo$playlist.segments,\n        segments = _segmentInfo$playlist2 === undefined ? [] : _segmentInfo$playlist2,\n        index = segmentInfo.mediaIndex,\n        timeline = segmentInfo.timeline;\n    return ['appending [' + index + '] of [' + seq + ', ' + (seq + segments.length) + '] from playlist [' + id + ']', '[' + start + ' => ' + end + '] in timeline [' + timeline + ']'].join(' ');\n  };\n  /**\n   * An object that manages segment loading and appending.\n   *\n   * @class SegmentLoader\n   * @param {Object} options required and optional options\n   * @extends videojs.EventTarget\n   */\n\n\n  var SegmentLoader = function (_videojs$EventTarget) {\n    inherits$1(SegmentLoader, _videojs$EventTarget);\n\n    function SegmentLoader(settings) {\n      classCallCheck$1(this, SegmentLoader); // check pre-conditions\n\n      var _this = possibleConstructorReturn$1(this, (SegmentLoader.__proto__ || Object.getPrototypeOf(SegmentLoader)).call(this));\n\n      if (!settings) {\n        throw new TypeError('Initialization settings are required');\n      }\n\n      if (typeof settings.currentTime !== 'function') {\n        throw new TypeError('No currentTime getter specified');\n      }\n\n      if (!settings.mediaSource) {\n        throw new TypeError('No MediaSource specified');\n      } // public properties\n\n\n      _this.bandwidth = settings.bandwidth;\n      _this.throughput = {\n        rate: 0,\n        count: 0\n      };\n      _this.roundTrip = NaN;\n\n      _this.resetStats_();\n\n      _this.mediaIndex = null; // private settings\n\n      _this.hasPlayed_ = settings.hasPlayed;\n      _this.currentTime_ = settings.currentTime;\n      _this.seekable_ = settings.seekable;\n      _this.seeking_ = settings.seeking;\n      _this.duration_ = settings.duration;\n      _this.mediaSource_ = settings.mediaSource;\n      _this.hls_ = settings.hls;\n      _this.loaderType_ = settings.loaderType;\n      _this.startingMedia_ = void 0;\n      _this.segmentMetadataTrack_ = settings.segmentMetadataTrack;\n      _this.goalBufferLength_ = settings.goalBufferLength;\n      _this.sourceType_ = settings.sourceType;\n      _this.inbandTextTracks_ = settings.inbandTextTracks;\n      _this.state_ = 'INIT'; // private instance variables\n\n      _this.checkBufferTimeout_ = null;\n      _this.error_ = void 0;\n      _this.currentTimeline_ = -1;\n      _this.pendingSegment_ = null;\n      _this.mimeType_ = null;\n      _this.sourceUpdater_ = null;\n      _this.xhrOptions_ = null; // Fragmented mp4 playback\n\n      _this.activeInitSegmentId_ = null;\n      _this.initSegments_ = {}; // Fmp4 CaptionParser\n\n      _this.captionParser_ = new mp4_6();\n      _this.decrypter_ = settings.decrypter; // Manages the tracking and generation of sync-points, mappings\n      // between a time in the display time and a segment index within\n      // a playlist\n\n      _this.syncController_ = settings.syncController;\n      _this.syncPoint_ = {\n        segmentIndex: 0,\n        time: 0\n      };\n\n      _this.syncController_.on('syncinfoupdate', function () {\n        return _this.trigger('syncinfoupdate');\n      });\n\n      _this.mediaSource_.addEventListener('sourceopen', function () {\n        return _this.ended_ = false;\n      }); // ...for determining the fetch location\n\n\n      _this.fetchAtBuffer_ = false;\n      _this.logger_ = logger('SegmentLoader[' + _this.loaderType_ + ']');\n      Object.defineProperty(_this, 'state', {\n        get: function get$$1() {\n          return this.state_;\n        },\n        set: function set$$1(newState) {\n          if (newState !== this.state_) {\n            this.logger_(this.state_ + ' -> ' + newState);\n            this.state_ = newState;\n          }\n        }\n      });\n      return _this;\n    }\n    /**\n     * reset all of our media stats\n     *\n     * @private\n     */\n\n\n    createClass$1(SegmentLoader, [{\n      key: 'resetStats_',\n      value: function resetStats_() {\n        this.mediaBytesTransferred = 0;\n        this.mediaRequests = 0;\n        this.mediaRequestsAborted = 0;\n        this.mediaRequestsTimedout = 0;\n        this.mediaRequestsErrored = 0;\n        this.mediaTransferDuration = 0;\n        this.mediaSecondsLoaded = 0;\n      }\n      /**\n       * dispose of the SegmentLoader and reset to the default state\n       */\n\n    }, {\n      key: 'dispose',\n      value: function dispose() {\n        this.state = 'DISPOSED';\n        this.pause();\n        this.abort_();\n\n        if (this.sourceUpdater_) {\n          this.sourceUpdater_.dispose();\n        }\n\n        this.resetStats_();\n        this.captionParser_.reset();\n      }\n      /**\n       * abort anything that is currently doing on with the SegmentLoader\n       * and reset to a default state\n       */\n\n    }, {\n      key: 'abort',\n      value: function abort() {\n        if (this.state !== 'WAITING') {\n          if (this.pendingSegment_) {\n            this.pendingSegment_ = null;\n          }\n\n          return;\n        }\n\n        this.abort_(); // We aborted the requests we were waiting on, so reset the loader's state to READY\n        // since we are no longer \"waiting\" on any requests. XHR callback is not always run\n        // when the request is aborted. This will prevent the loader from being stuck in the\n        // WAITING state indefinitely.\n\n        this.state = 'READY'; // don't wait for buffer check timeouts to begin fetching the\n        // next segment\n\n        if (!this.paused()) {\n          this.monitorBuffer_();\n        }\n      }\n      /**\n       * abort all pending xhr requests and null any pending segements\n       *\n       * @private\n       */\n\n    }, {\n      key: 'abort_',\n      value: function abort_() {\n        if (this.pendingSegment_) {\n          this.pendingSegment_.abortRequests();\n        } // clear out the segment being processed\n\n\n        this.pendingSegment_ = null;\n      }\n      /**\n       * set an error on the segment loader and null out any pending segements\n       *\n       * @param {Error} error the error to set on the SegmentLoader\n       * @return {Error} the error that was set or that is currently set\n       */\n\n    }, {\n      key: 'error',\n      value: function error(_error) {\n        if (typeof _error !== 'undefined') {\n          this.error_ = _error;\n        }\n\n        this.pendingSegment_ = null;\n        return this.error_;\n      }\n    }, {\n      key: 'endOfStream',\n      value: function endOfStream() {\n        this.ended_ = true;\n        this.pause();\n        this.trigger('ended');\n      }\n      /**\n       * Indicates which time ranges are buffered\n       *\n       * @return {TimeRange}\n       *         TimeRange object representing the current buffered ranges\n       */\n\n    }, {\n      key: 'buffered_',\n      value: function buffered_() {\n        if (!this.sourceUpdater_) {\n          return videojs$1.createTimeRanges();\n        }\n\n        return this.sourceUpdater_.buffered();\n      }\n      /**\n       * Gets and sets init segment for the provided map\n       *\n       * @param {Object} map\n       *        The map object representing the init segment to get or set\n       * @param {Boolean=} set\n       *        If true, the init segment for the provided map should be saved\n       * @return {Object}\n       *         map object for desired init segment\n       */\n\n    }, {\n      key: 'initSegment',\n      value: function initSegment(map) {\n        var set$$1 = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;\n\n        if (!map) {\n          return null;\n        }\n\n        var id = initSegmentId(map);\n        var storedMap = this.initSegments_[id];\n\n        if (set$$1 && !storedMap && map.bytes) {\n          this.initSegments_[id] = storedMap = {\n            resolvedUri: map.resolvedUri,\n            byterange: map.byterange,\n            bytes: map.bytes,\n            timescales: map.timescales,\n            videoTrackIds: map.videoTrackIds\n          };\n        }\n\n        return storedMap || map;\n      }\n      /**\n       * Returns true if all configuration required for loading is present, otherwise false.\n       *\n       * @return {Boolean} True if the all configuration is ready for loading\n       * @private\n       */\n\n    }, {\n      key: 'couldBeginLoading_',\n      value: function couldBeginLoading_() {\n        return this.playlist_ && ( // the source updater is created when init_ is called, so either having a\n        // source updater or being in the INIT state with a mimeType is enough\n        // to say we have all the needed configuration to start loading.\n        this.sourceUpdater_ || this.mimeType_ && this.state === 'INIT') && !this.paused();\n      }\n      /**\n       * load a playlist and start to fill the buffer\n       */\n\n    }, {\n      key: 'load',\n      value: function load() {\n        // un-pause\n        this.monitorBuffer_(); // if we don't have a playlist yet, keep waiting for one to be\n        // specified\n\n        if (!this.playlist_) {\n          return;\n        } // not sure if this is the best place for this\n\n\n        this.syncController_.setDateTimeMapping(this.playlist_); // if all the configuration is ready, initialize and begin loading\n\n        if (this.state === 'INIT' && this.couldBeginLoading_()) {\n          return this.init_();\n        } // if we're in the middle of processing a segment already, don't\n        // kick off an additional segment request\n\n\n        if (!this.couldBeginLoading_() || this.state !== 'READY' && this.state !== 'INIT') {\n          return;\n        }\n\n        this.state = 'READY';\n      }\n      /**\n       * Once all the starting parameters have been specified, begin\n       * operation. This method should only be invoked from the INIT\n       * state.\n       *\n       * @private\n       */\n\n    }, {\n      key: 'init_',\n      value: function init_() {\n        this.state = 'READY';\n        this.sourceUpdater_ = new SourceUpdater(this.mediaSource_, this.mimeType_, this.loaderType_, this.sourceBufferEmitter_);\n        this.resetEverything();\n        return this.monitorBuffer_();\n      }\n      /**\n       * set a playlist on the segment loader\n       *\n       * @param {PlaylistLoader} media the playlist to set on the segment loader\n       */\n\n    }, {\n      key: 'playlist',\n      value: function playlist(newPlaylist) {\n        var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n\n        if (!newPlaylist) {\n          return;\n        }\n\n        var oldPlaylist = this.playlist_;\n        var segmentInfo = this.pendingSegment_;\n        this.playlist_ = newPlaylist;\n        this.xhrOptions_ = options; // when we haven't started playing yet, the start of a live playlist\n        // is always our zero-time so force a sync update each time the playlist\n        // is refreshed from the server\n\n        if (!this.hasPlayed_()) {\n          newPlaylist.syncInfo = {\n            mediaSequence: newPlaylist.mediaSequence,\n            time: 0\n          };\n        }\n\n        var oldId = oldPlaylist ? oldPlaylist.id : null;\n        this.logger_('playlist update [' + oldId + ' => ' + newPlaylist.id + ']'); // in VOD, this is always a rendition switch (or we updated our syncInfo above)\n        // in LIVE, we always want to update with new playlists (including refreshes)\n\n        this.trigger('syncinfoupdate'); // if we were unpaused but waiting for a playlist, start\n        // buffering now\n\n        if (this.state === 'INIT' && this.couldBeginLoading_()) {\n          return this.init_();\n        }\n\n        if (!oldPlaylist || oldPlaylist.uri !== newPlaylist.uri) {\n          if (this.mediaIndex !== null) {\n            // we must \"resync\" the segment loader when we switch renditions and\n            // the segment loader is already synced to the previous rendition\n            this.resyncLoader();\n          } // the rest of this function depends on `oldPlaylist` being defined\n\n\n          return;\n        } // we reloaded the same playlist so we are in a live scenario\n        // and we will likely need to adjust the mediaIndex\n\n\n        var mediaSequenceDiff = newPlaylist.mediaSequence - oldPlaylist.mediaSequence;\n        this.logger_('live window shift [' + mediaSequenceDiff + ']'); // update the mediaIndex on the SegmentLoader\n        // this is important because we can abort a request and this value must be\n        // equal to the last appended mediaIndex\n\n        if (this.mediaIndex !== null) {\n          this.mediaIndex -= mediaSequenceDiff;\n        } // update the mediaIndex on the SegmentInfo object\n        // this is important because we will update this.mediaIndex with this value\n        // in `handleUpdateEnd_` after the segment has been successfully appended\n\n\n        if (segmentInfo) {\n          segmentInfo.mediaIndex -= mediaSequenceDiff; // we need to update the referenced segment so that timing information is\n          // saved for the new playlist's segment, however, if the segment fell off the\n          // playlist, we can leave the old reference and just lose the timing info\n\n          if (segmentInfo.mediaIndex >= 0) {\n            segmentInfo.segment = newPlaylist.segments[segmentInfo.mediaIndex];\n          }\n        }\n\n        this.syncController_.saveExpiredSegmentInfo(oldPlaylist, newPlaylist);\n      }\n      /**\n       * Prevent the loader from fetching additional segments. If there\n       * is a segment request outstanding, it will finish processing\n       * before the loader halts. A segment loader can be unpaused by\n       * calling load().\n       */\n\n    }, {\n      key: 'pause',\n      value: function pause() {\n        if (this.checkBufferTimeout_) {\n          window$1.clearTimeout(this.checkBufferTimeout_);\n          this.checkBufferTimeout_ = null;\n        }\n      }\n      /**\n       * Returns whether the segment loader is fetching additional\n       * segments when given the opportunity. This property can be\n       * modified through calls to pause() and load().\n       */\n\n    }, {\n      key: 'paused',\n      value: function paused() {\n        return this.checkBufferTimeout_ === null;\n      }\n      /**\n       * create/set the following mimetype on the SourceBuffer through a\n       * SourceUpdater\n       *\n       * @param {String} mimeType the mime type string to use\n       * @param {Object} sourceBufferEmitter an event emitter that fires when a source buffer\n       * is added to the media source\n       */\n\n    }, {\n      key: 'mimeType',\n      value: function mimeType(_mimeType, sourceBufferEmitter) {\n        if (this.mimeType_) {\n          return;\n        }\n\n        this.mimeType_ = _mimeType;\n        this.sourceBufferEmitter_ = sourceBufferEmitter; // if we were unpaused but waiting for a sourceUpdater, start\n        // buffering now\n\n        if (this.state === 'INIT' && this.couldBeginLoading_()) {\n          this.init_();\n        }\n      }\n      /**\n       * Delete all the buffered data and reset the SegmentLoader\n       * @param {Function} [done] an optional callback to be executed when the remove\n       * operation is complete\n       */\n\n    }, {\n      key: 'resetEverything',\n      value: function resetEverything(done) {\n        this.ended_ = false;\n        this.resetLoader();\n        this.remove(0, this.duration_(), done); // clears fmp4 captions\n\n        this.captionParser_.clearAllCaptions();\n        this.trigger('reseteverything');\n      }\n      /**\n       * Force the SegmentLoader to resync and start loading around the currentTime instead\n       * of starting at the end of the buffer\n       *\n       * Useful for fast quality changes\n       */\n\n    }, {\n      key: 'resetLoader',\n      value: function resetLoader() {\n        this.fetchAtBuffer_ = false;\n        this.resyncLoader();\n      }\n      /**\n       * Force the SegmentLoader to restart synchronization and make a conservative guess\n       * before returning to the simple walk-forward method\n       */\n\n    }, {\n      key: 'resyncLoader',\n      value: function resyncLoader() {\n        this.mediaIndex = null;\n        this.syncPoint_ = null;\n        this.abort();\n      }\n      /**\n       * Remove any data in the source buffer between start and end times\n       * @param {Number} start - the start time of the region to remove from the buffer\n       * @param {Number} end - the end time of the region to remove from the buffer\n       * @param {Function} [done] - an optional callback to be executed when the remove\n       * operation is complete\n       */\n\n    }, {\n      key: 'remove',\n      value: function remove(start, end, done) {\n        if (this.sourceUpdater_) {\n          this.sourceUpdater_.remove(start, end, done);\n        }\n\n        removeCuesFromTrack(start, end, this.segmentMetadataTrack_);\n\n        if (this.inbandTextTracks_) {\n          for (var id in this.inbandTextTracks_) {\n            removeCuesFromTrack(start, end, this.inbandTextTracks_[id]);\n          }\n        }\n      }\n      /**\n       * (re-)schedule monitorBufferTick_ to run as soon as possible\n       *\n       * @private\n       */\n\n    }, {\n      key: 'monitorBuffer_',\n      value: function monitorBuffer_() {\n        if (this.checkBufferTimeout_) {\n          window$1.clearTimeout(this.checkBufferTimeout_);\n        }\n\n        this.checkBufferTimeout_ = window$1.setTimeout(this.monitorBufferTick_.bind(this), 1);\n      }\n      /**\n       * As long as the SegmentLoader is in the READY state, periodically\n       * invoke fillBuffer_().\n       *\n       * @private\n       */\n\n    }, {\n      key: 'monitorBufferTick_',\n      value: function monitorBufferTick_() {\n        if (this.state === 'READY') {\n          this.fillBuffer_();\n        }\n\n        if (this.checkBufferTimeout_) {\n          window$1.clearTimeout(this.checkBufferTimeout_);\n        }\n\n        this.checkBufferTimeout_ = window$1.setTimeout(this.monitorBufferTick_.bind(this), CHECK_BUFFER_DELAY);\n      }\n      /**\n       * fill the buffer with segements unless the sourceBuffers are\n       * currently updating\n       *\n       * Note: this function should only ever be called by monitorBuffer_\n       * and never directly\n       *\n       * @private\n       */\n\n    }, {\n      key: 'fillBuffer_',\n      value: function fillBuffer_() {\n        if (this.sourceUpdater_.updating()) {\n          return;\n        }\n\n        if (!this.syncPoint_) {\n          this.syncPoint_ = this.syncController_.getSyncPoint(this.playlist_, this.duration_(), this.currentTimeline_, this.currentTime_());\n        } // see if we need to begin loading immediately\n\n\n        var segmentInfo = this.checkBuffer_(this.buffered_(), this.playlist_, this.mediaIndex, this.hasPlayed_(), this.currentTime_(), this.syncPoint_);\n\n        if (!segmentInfo) {\n          return;\n        }\n\n        var isEndOfStream = detectEndOfStream(this.playlist_, this.mediaSource_, segmentInfo.mediaIndex);\n\n        if (isEndOfStream) {\n          this.endOfStream();\n          return;\n        }\n\n        if (segmentInfo.mediaIndex === this.playlist_.segments.length - 1 && this.mediaSource_.readyState === 'ended' && !this.seeking_()) {\n          return;\n        } // We will need to change timestampOffset of the sourceBuffer if either of\n        // the following conditions are true:\n        // - The segment.timeline !== this.currentTimeline\n        //   (we are crossing a discontinuity somehow)\n        // - The \"timestampOffset\" for the start of this segment is less than\n        //   the currently set timestampOffset\n        // Also, clear captions if we are crossing a discontinuity boundary\n\n\n        if (segmentInfo.timeline !== this.currentTimeline_ || segmentInfo.startOfSegment !== null && segmentInfo.startOfSegment < this.sourceUpdater_.timestampOffset()) {\n          this.syncController_.reset();\n          segmentInfo.timestampOffset = segmentInfo.startOfSegment;\n          this.captionParser_.clearAllCaptions();\n        }\n\n        this.loadSegment_(segmentInfo);\n      }\n      /**\n       * Determines what segment request should be made, given current playback\n       * state.\n       *\n       * @param {TimeRanges} buffered - the state of the buffer\n       * @param {Object} playlist - the playlist object to fetch segments from\n       * @param {Number} mediaIndex - the previous mediaIndex fetched or null\n       * @param {Boolean} hasPlayed - a flag indicating whether we have played or not\n       * @param {Number} currentTime - the playback position in seconds\n       * @param {Object} syncPoint - a segment info object that describes the\n       * @returns {Object} a segment request object that describes the segment to load\n       */\n\n    }, {\n      key: 'checkBuffer_',\n      value: function checkBuffer_(buffered, playlist, mediaIndex, hasPlayed, currentTime, syncPoint) {\n        var lastBufferedEnd = 0;\n        var startOfSegment = void 0;\n\n        if (buffered.length) {\n          lastBufferedEnd = buffered.end(buffered.length - 1);\n        }\n\n        var bufferedTime = Math.max(0, lastBufferedEnd - currentTime);\n\n        if (!playlist.segments.length) {\n          return null;\n        } // if there is plenty of content buffered, and the video has\n        // been played before relax for awhile\n\n\n        if (bufferedTime >= this.goalBufferLength_()) {\n          return null;\n        } // if the video has not yet played once, and we already have\n        // one segment downloaded do nothing\n\n\n        if (!hasPlayed && bufferedTime >= 1) {\n          return null;\n        } // When the syncPoint is null, there is no way of determining a good\n        // conservative segment index to fetch from\n        // The best thing to do here is to get the kind of sync-point data by\n        // making a request\n\n\n        if (syncPoint === null) {\n          mediaIndex = this.getSyncSegmentCandidate_(playlist);\n          return this.generateSegmentInfo_(playlist, mediaIndex, null, true);\n        } // Under normal playback conditions fetching is a simple walk forward\n\n\n        if (mediaIndex !== null) {\n          var segment = playlist.segments[mediaIndex];\n\n          if (segment && segment.end) {\n            startOfSegment = segment.end;\n          } else {\n            startOfSegment = lastBufferedEnd;\n          }\n\n          return this.generateSegmentInfo_(playlist, mediaIndex + 1, startOfSegment, false);\n        } // There is a sync-point but the lack of a mediaIndex indicates that\n        // we need to make a good conservative guess about which segment to\n        // fetch\n\n\n        if (this.fetchAtBuffer_) {\n          // Find the segment containing the end of the buffer\n          var mediaSourceInfo = Playlist.getMediaInfoForTime(playlist, lastBufferedEnd, syncPoint.segmentIndex, syncPoint.time);\n          mediaIndex = mediaSourceInfo.mediaIndex;\n          startOfSegment = mediaSourceInfo.startTime;\n        } else {\n          // Find the segment containing currentTime\n          var _mediaSourceInfo = Playlist.getMediaInfoForTime(playlist, currentTime, syncPoint.segmentIndex, syncPoint.time);\n\n          mediaIndex = _mediaSourceInfo.mediaIndex;\n          startOfSegment = _mediaSourceInfo.startTime;\n        }\n\n        return this.generateSegmentInfo_(playlist, mediaIndex, startOfSegment, false);\n      }\n      /**\n       * The segment loader has no recourse except to fetch a segment in the\n       * current playlist and use the internal timestamps in that segment to\n       * generate a syncPoint. This function returns a good candidate index\n       * for that process.\n       *\n       * @param {Object} playlist - the playlist object to look for a\n       * @returns {Number} An index of a segment from the playlist to load\n       */\n\n    }, {\n      key: 'getSyncSegmentCandidate_',\n      value: function getSyncSegmentCandidate_(playlist) {\n        var _this2 = this;\n\n        if (this.currentTimeline_ === -1) {\n          return 0;\n        }\n\n        var segmentIndexArray = playlist.segments.map(function (s, i) {\n          return {\n            timeline: s.timeline,\n            segmentIndex: i\n          };\n        }).filter(function (s) {\n          return s.timeline === _this2.currentTimeline_;\n        });\n\n        if (segmentIndexArray.length) {\n          return segmentIndexArray[Math.min(segmentIndexArray.length - 1, 1)].segmentIndex;\n        }\n\n        return Math.max(playlist.segments.length - 1, 0);\n      }\n    }, {\n      key: 'generateSegmentInfo_',\n      value: function generateSegmentInfo_(playlist, mediaIndex, startOfSegment, isSyncRequest) {\n        if (mediaIndex < 0 || mediaIndex >= playlist.segments.length) {\n          return null;\n        }\n\n        var segment = playlist.segments[mediaIndex];\n        return {\n          requestId: 'segment-loader-' + Math.random(),\n          // resolve the segment URL relative to the playlist\n          uri: segment.resolvedUri,\n          // the segment's mediaIndex at the time it was requested\n          mediaIndex: mediaIndex,\n          // whether or not to update the SegmentLoader's state with this\n          // segment's mediaIndex\n          isSyncRequest: isSyncRequest,\n          startOfSegment: startOfSegment,\n          // the segment's playlist\n          playlist: playlist,\n          // unencrypted bytes of the segment\n          bytes: null,\n          // when a key is defined for this segment, the encrypted bytes\n          encryptedBytes: null,\n          // The target timestampOffset for this segment when we append it\n          // to the source buffer\n          timestampOffset: null,\n          // The timeline that the segment is in\n          timeline: segment.timeline,\n          // The expected duration of the segment in seconds\n          duration: segment.duration,\n          // retain the segment in case the playlist updates while doing an async process\n          segment: segment\n        };\n      }\n      /**\n       * Determines if the network has enough bandwidth to complete the current segment\n       * request in a timely manner. If not, the request will be aborted early and bandwidth\n       * updated to trigger a playlist switch.\n       *\n       * @param {Object} stats\n       *        Object containing stats about the request timing and size\n       * @return {Boolean} True if the request was aborted, false otherwise\n       * @private\n       */\n\n    }, {\n      key: 'abortRequestEarly_',\n      value: function abortRequestEarly_(stats) {\n        if (this.hls_.tech_.paused() || // Don't abort if the current playlist is on the lowestEnabledRendition\n        // TODO: Replace using timeout with a boolean indicating whether this playlist is\n        //       the lowestEnabledRendition.\n        !this.xhrOptions_.timeout || // Don't abort if we have no bandwidth information to estimate segment sizes\n        !this.playlist_.attributes.BANDWIDTH) {\n          return false;\n        } // Wait at least 1 second since the first byte of data has been received before\n        // using the calculated bandwidth from the progress event to allow the bitrate\n        // to stabilize\n\n\n        if (Date.now() - (stats.firstBytesReceivedAt || Date.now()) < 1000) {\n          return false;\n        }\n\n        var currentTime = this.currentTime_();\n        var measuredBandwidth = stats.bandwidth;\n        var segmentDuration = this.pendingSegment_.duration;\n        var requestTimeRemaining = Playlist.estimateSegmentRequestTime(segmentDuration, measuredBandwidth, this.playlist_, stats.bytesReceived); // Subtract 1 from the timeUntilRebuffer so we still consider an early abort\n        // if we are only left with less than 1 second when the request completes.\n        // A negative timeUntilRebuffering indicates we are already rebuffering\n\n        var timeUntilRebuffer$$1 = timeUntilRebuffer(this.buffered_(), currentTime, this.hls_.tech_.playbackRate()) - 1; // Only consider aborting early if the estimated time to finish the download\n        // is larger than the estimated time until the player runs out of forward buffer\n\n        if (requestTimeRemaining <= timeUntilRebuffer$$1) {\n          return false;\n        }\n\n        var switchCandidate = minRebufferMaxBandwidthSelector({\n          master: this.hls_.playlists.master,\n          currentTime: currentTime,\n          bandwidth: measuredBandwidth,\n          duration: this.duration_(),\n          segmentDuration: segmentDuration,\n          timeUntilRebuffer: timeUntilRebuffer$$1,\n          currentTimeline: this.currentTimeline_,\n          syncController: this.syncController_\n        });\n\n        if (!switchCandidate) {\n          return;\n        }\n\n        var rebufferingImpact = requestTimeRemaining - timeUntilRebuffer$$1;\n        var timeSavedBySwitching = rebufferingImpact - switchCandidate.rebufferingImpact;\n        var minimumTimeSaving = 0.5; // If we are already rebuffering, increase the amount of variance we add to the\n        // potential round trip time of the new request so that we are not too aggressive\n        // with switching to a playlist that might save us a fraction of a second.\n\n        if (timeUntilRebuffer$$1 <= TIME_FUDGE_FACTOR) {\n          minimumTimeSaving = 1;\n        }\n\n        if (!switchCandidate.playlist || switchCandidate.playlist.uri === this.playlist_.uri || timeSavedBySwitching < minimumTimeSaving) {\n          return false;\n        } // set the bandwidth to that of the desired playlist being sure to scale by\n        // BANDWIDTH_VARIANCE and add one so the playlist selector does not exclude it\n        // don't trigger a bandwidthupdate as the bandwidth is artifial\n\n\n        this.bandwidth = switchCandidate.playlist.attributes.BANDWIDTH * Config.BANDWIDTH_VARIANCE + 1;\n        this.abort();\n        this.trigger('earlyabort');\n        return true;\n      }\n      /**\n       * XHR `progress` event handler\n       *\n       * @param {Event}\n       *        The XHR `progress` event\n       * @param {Object} simpleSegment\n       *        A simplified segment object copy\n       * @private\n       */\n\n    }, {\n      key: 'handleProgress_',\n      value: function handleProgress_(event, simpleSegment) {\n        if (!this.pendingSegment_ || simpleSegment.requestId !== this.pendingSegment_.requestId || this.abortRequestEarly_(simpleSegment.stats)) {\n          return;\n        }\n\n        this.trigger('progress');\n      }\n      /**\n       * load a specific segment from a request into the buffer\n       *\n       * @private\n       */\n\n    }, {\n      key: 'loadSegment_',\n      value: function loadSegment_(segmentInfo) {\n        this.state = 'WAITING';\n        this.pendingSegment_ = segmentInfo;\n        this.trimBackBuffer_(segmentInfo);\n        segmentInfo.abortRequests = mediaSegmentRequest(this.hls_.xhr, this.xhrOptions_, this.decrypter_, this.captionParser_, this.createSimplifiedSegmentObj_(segmentInfo), // progress callback\n        this.handleProgress_.bind(this), this.segmentRequestFinished_.bind(this));\n      }\n      /**\n       * trim the back buffer so that we don't have too much data\n       * in the source buffer\n       *\n       * @private\n       *\n       * @param {Object} segmentInfo - the current segment\n       */\n\n    }, {\n      key: 'trimBackBuffer_',\n      value: function trimBackBuffer_(segmentInfo) {\n        var removeToTime = safeBackBufferTrimTime(this.seekable_(), this.currentTime_(), this.playlist_.targetDuration || 10); // Chrome has a hard limit of 150MB of\n        // buffer and a very conservative \"garbage collector\"\n        // We manually clear out the old buffer to ensure\n        // we don't trigger the QuotaExceeded error\n        // on the source buffer during subsequent appends\n\n        if (removeToTime > 0) {\n          this.remove(0, removeToTime);\n        }\n      }\n      /**\n       * created a simplified copy of the segment object with just the\n       * information necessary to perform the XHR and decryption\n       *\n       * @private\n       *\n       * @param {Object} segmentInfo - the current segment\n       * @returns {Object} a simplified segment object copy\n       */\n\n    }, {\n      key: 'createSimplifiedSegmentObj_',\n      value: function createSimplifiedSegmentObj_(segmentInfo) {\n        var segment = segmentInfo.segment;\n        var simpleSegment = {\n          resolvedUri: segment.resolvedUri,\n          byterange: segment.byterange,\n          requestId: segmentInfo.requestId\n        };\n\n        if (segment.key) {\n          // if the media sequence is greater than 2^32, the IV will be incorrect\n          // assuming 10s segments, that would be about 1300 years\n          var iv = segment.key.iv || new Uint32Array([0, 0, 0, segmentInfo.mediaIndex + segmentInfo.playlist.mediaSequence]);\n          simpleSegment.key = {\n            resolvedUri: segment.key.resolvedUri,\n            iv: iv\n          };\n        }\n\n        if (segment.map) {\n          simpleSegment.map = this.initSegment(segment.map);\n        }\n\n        return simpleSegment;\n      }\n      /**\n       * Handle the callback from the segmentRequest function and set the\n       * associated SegmentLoader state and errors if necessary\n       *\n       * @private\n       */\n\n    }, {\n      key: 'segmentRequestFinished_',\n      value: function segmentRequestFinished_(error, simpleSegment) {\n        // every request counts as a media request even if it has been aborted\n        // or canceled due to a timeout\n        this.mediaRequests += 1;\n\n        if (simpleSegment.stats) {\n          this.mediaBytesTransferred += simpleSegment.stats.bytesReceived;\n          this.mediaTransferDuration += simpleSegment.stats.roundTripTime;\n        } // The request was aborted and the SegmentLoader has already been reset\n\n\n        if (!this.pendingSegment_) {\n          this.mediaRequestsAborted += 1;\n          return;\n        } // the request was aborted and the SegmentLoader has already started\n        // another request. this can happen when the timeout for an aborted\n        // request triggers due to a limitation in the XHR library\n        // do not count this as any sort of request or we risk double-counting\n\n\n        if (simpleSegment.requestId !== this.pendingSegment_.requestId) {\n          return;\n        } // an error occurred from the active pendingSegment_ so reset everything\n\n\n        if (error) {\n          this.pendingSegment_ = null;\n          this.state = 'READY'; // the requests were aborted just record the aborted stat and exit\n          // this is not a true error condition and nothing corrective needs\n          // to be done\n\n          if (error.code === REQUEST_ERRORS.ABORTED) {\n            this.mediaRequestsAborted += 1;\n            return;\n          }\n\n          this.pause(); // the error is really just that at least one of the requests timed-out\n          // set the bandwidth to a very low value and trigger an ABR switch to\n          // take emergency action\n\n          if (error.code === REQUEST_ERRORS.TIMEOUT) {\n            this.mediaRequestsTimedout += 1;\n            this.bandwidth = 1;\n            this.roundTrip = NaN;\n            this.trigger('bandwidthupdate');\n            return;\n          } // if control-flow has arrived here, then the error is real\n          // emit an error event to blacklist the current playlist\n\n\n          this.mediaRequestsErrored += 1;\n          this.error(error);\n          this.trigger('error');\n          return;\n        } // the response was a success so set any bandwidth stats the request\n        // generated for ABR purposes\n\n\n        this.bandwidth = simpleSegment.stats.bandwidth;\n        this.roundTrip = simpleSegment.stats.roundTripTime; // if this request included an initialization segment, save that data\n        // to the initSegment cache\n\n        if (simpleSegment.map) {\n          simpleSegment.map = this.initSegment(simpleSegment.map, true);\n        }\n\n        this.processSegmentResponse_(simpleSegment);\n      }\n      /**\n       * Move any important data from the simplified segment object\n       * back to the real segment object for future phases\n       *\n       * @private\n       */\n\n    }, {\n      key: 'processSegmentResponse_',\n      value: function processSegmentResponse_(simpleSegment) {\n        var segmentInfo = this.pendingSegment_;\n        segmentInfo.bytes = simpleSegment.bytes;\n\n        if (simpleSegment.map) {\n          segmentInfo.segment.map.bytes = simpleSegment.map.bytes;\n        }\n\n        segmentInfo.endOfAllRequests = simpleSegment.endOfAllRequests; // This has fmp4 captions, add them to text tracks\n\n        if (simpleSegment.fmp4Captions) {\n          createCaptionsTrackIfNotExists(this.inbandTextTracks_, this.hls_.tech_, simpleSegment.captionStreams);\n          addCaptionData({\n            inbandTextTracks: this.inbandTextTracks_,\n            captionArray: simpleSegment.fmp4Captions,\n            // fmp4s will not have a timestamp offset\n            timestampOffset: 0\n          }); // Reset stored captions since we added parsed\n          // captions to a text track at this point\n\n          this.captionParser_.clearParsedCaptions();\n        }\n\n        this.handleSegment_();\n      }\n      /**\n       * append a decrypted segement to the SourceBuffer through a SourceUpdater\n       *\n       * @private\n       */\n\n    }, {\n      key: 'handleSegment_',\n      value: function handleSegment_() {\n        var _this3 = this;\n\n        if (!this.pendingSegment_) {\n          this.state = 'READY';\n          return;\n        }\n\n        var segmentInfo = this.pendingSegment_;\n        var segment = segmentInfo.segment;\n        var timingInfo = this.syncController_.probeSegmentInfo(segmentInfo); // When we have our first timing info, determine what media types this loader is\n        // dealing with. Although we're maintaining extra state, it helps to preserve the\n        // separation of segment loader from the actual source buffers.\n\n        if (typeof this.startingMedia_ === 'undefined' && timingInfo && ( // Guard against cases where we're not getting timing info at all until we are\n        // certain that all streams will provide it.\n        timingInfo.containsAudio || timingInfo.containsVideo)) {\n          this.startingMedia_ = {\n            containsAudio: timingInfo.containsAudio,\n            containsVideo: timingInfo.containsVideo\n          };\n        }\n\n        var illegalMediaSwitchError = illegalMediaSwitch(this.loaderType_, this.startingMedia_, timingInfo);\n\n        if (illegalMediaSwitchError) {\n          this.error({\n            message: illegalMediaSwitchError,\n            blacklistDuration: Infinity\n          });\n          this.trigger('error');\n          return;\n        }\n\n        if (segmentInfo.isSyncRequest) {\n          this.trigger('syncinfoupdate');\n          this.pendingSegment_ = null;\n          this.state = 'READY';\n          return;\n        }\n\n        if (segmentInfo.timestampOffset !== null && segmentInfo.timestampOffset !== this.sourceUpdater_.timestampOffset()) {\n          this.sourceUpdater_.timestampOffset(segmentInfo.timestampOffset); // fired when a timestamp offset is set in HLS (can also identify discontinuities)\n\n          this.trigger('timestampoffset');\n        }\n\n        var timelineMapping = this.syncController_.mappingForTimeline(segmentInfo.timeline);\n\n        if (timelineMapping !== null) {\n          this.trigger({\n            type: 'segmenttimemapping',\n            mapping: timelineMapping\n          });\n        }\n\n        this.state = 'APPENDING'; // if the media initialization segment is changing, append it\n        // before the content segment\n\n        if (segment.map) {\n          var initId = initSegmentId(segment.map);\n\n          if (!this.activeInitSegmentId_ || this.activeInitSegmentId_ !== initId) {\n            var initSegment = this.initSegment(segment.map);\n            this.sourceUpdater_.appendBuffer(initSegment.bytes, function () {\n              _this3.activeInitSegmentId_ = initId;\n            });\n          }\n        }\n\n        segmentInfo.byteLength = segmentInfo.bytes.byteLength;\n\n        if (typeof segment.start === 'number' && typeof segment.end === 'number') {\n          this.mediaSecondsLoaded += segment.end - segment.start;\n        } else {\n          this.mediaSecondsLoaded += segment.duration;\n        }\n\n        this.logger_(segmentInfoString(segmentInfo));\n        this.sourceUpdater_.appendBuffer(segmentInfo.bytes, this.handleUpdateEnd_.bind(this));\n      }\n      /**\n       * callback to run when appendBuffer is finished. detects if we are\n       * in a good state to do things with the data we got, or if we need\n       * to wait for more\n       *\n       * @private\n       */\n\n    }, {\n      key: 'handleUpdateEnd_',\n      value: function handleUpdateEnd_() {\n        if (!this.pendingSegment_) {\n          this.state = 'READY';\n\n          if (!this.paused()) {\n            this.monitorBuffer_();\n          }\n\n          return;\n        }\n\n        var segmentInfo = this.pendingSegment_;\n        var segment = segmentInfo.segment;\n        var isWalkingForward = this.mediaIndex !== null;\n        this.pendingSegment_ = null;\n        this.recordThroughput_(segmentInfo);\n        this.addSegmentMetadataCue_(segmentInfo);\n        this.state = 'READY';\n        this.mediaIndex = segmentInfo.mediaIndex;\n        this.fetchAtBuffer_ = true;\n        this.currentTimeline_ = segmentInfo.timeline; // We must update the syncinfo to recalculate the seekable range before\n        // the following conditional otherwise it may consider this a bad \"guess\"\n        // and attempt to resync when the post-update seekable window and live\n        // point would mean that this was the perfect segment to fetch\n\n        this.trigger('syncinfoupdate'); // If we previously appended a segment that ends more than 3 targetDurations before\n        // the currentTime_ that means that our conservative guess was too conservative.\n        // In that case, reset the loader state so that we try to use any information gained\n        // from the previous request to create a new, more accurate, sync-point.\n\n        if (segment.end && this.currentTime_() - segment.end > segmentInfo.playlist.targetDuration * 3) {\n          this.resetEverything();\n          return;\n        } // Don't do a rendition switch unless we have enough time to get a sync segment\n        // and conservatively guess\n\n\n        if (isWalkingForward) {\n          this.trigger('bandwidthupdate');\n        }\n\n        this.trigger('progress'); // any time an update finishes and the last segment is in the\n        // buffer, end the stream. this ensures the \"ended\" event will\n        // fire if playback reaches that point.\n\n        var isEndOfStream = detectEndOfStream(segmentInfo.playlist, this.mediaSource_, segmentInfo.mediaIndex + 1);\n\n        if (isEndOfStream) {\n          this.endOfStream();\n        }\n\n        if (!this.paused()) {\n          this.monitorBuffer_();\n        }\n      }\n      /**\n       * Records the current throughput of the decrypt, transmux, and append\n       * portion of the semgment pipeline. `throughput.rate` is a the cumulative\n       * moving average of the throughput. `throughput.count` is the number of\n       * data points in the average.\n       *\n       * @private\n       * @param {Object} segmentInfo the object returned by loadSegment\n       */\n\n    }, {\n      key: 'recordThroughput_',\n      value: function recordThroughput_(segmentInfo) {\n        var rate = this.throughput.rate; // Add one to the time to ensure that we don't accidentally attempt to divide\n        // by zero in the case where the throughput is ridiculously high\n\n        var segmentProcessingTime = Date.now() - segmentInfo.endOfAllRequests + 1; // Multiply by 8000 to convert from bytes/millisecond to bits/second\n\n        var segmentProcessingThroughput = Math.floor(segmentInfo.byteLength / segmentProcessingTime * 8 * 1000); // This is just a cumulative moving average calculation:\n        //   newAvg = oldAvg + (sample - oldAvg) / (sampleCount + 1)\n\n        this.throughput.rate += (segmentProcessingThroughput - rate) / ++this.throughput.count;\n      }\n      /**\n       * Adds a cue to the segment-metadata track with some metadata information about the\n       * segment\n       *\n       * @private\n       * @param {Object} segmentInfo\n       *        the object returned by loadSegment\n       * @method addSegmentMetadataCue_\n       */\n\n    }, {\n      key: 'addSegmentMetadataCue_',\n      value: function addSegmentMetadataCue_(segmentInfo) {\n        if (!this.segmentMetadataTrack_) {\n          return;\n        }\n\n        var segment = segmentInfo.segment;\n        var start = segment.start;\n        var end = segment.end; // Do not try adding the cue if the start and end times are invalid.\n\n        if (!finite(start) || !finite(end)) {\n          return;\n        }\n\n        removeCuesFromTrack(start, end, this.segmentMetadataTrack_);\n        var Cue = window$1.WebKitDataCue || window$1.VTTCue;\n        var value = {\n          dateTimeObject: segment.dateTimeObject,\n          dateTimeString: segment.dateTimeString,\n          bandwidth: segmentInfo.playlist.attributes.BANDWIDTH,\n          resolution: segmentInfo.playlist.attributes.RESOLUTION,\n          codecs: segmentInfo.playlist.attributes.CODECS,\n          byteLength: segmentInfo.byteLength,\n          uri: segmentInfo.uri,\n          timeline: segmentInfo.timeline,\n          playlist: segmentInfo.playlist.uri,\n          start: start,\n          end: end\n        };\n        var data = JSON.stringify(value);\n        var cue = new Cue(start, end, data); // Attach the metadata to the value property of the cue to keep consistency between\n        // the differences of WebKitDataCue in safari and VTTCue in other browsers\n\n        cue.value = value;\n        this.segmentMetadataTrack_.addCue(cue);\n      }\n    }]);\n    return SegmentLoader;\n  }(videojs$1.EventTarget);\n\n  var uint8ToUtf8 = function uint8ToUtf8(uintArray) {\n    return decodeURIComponent(escape(String.fromCharCode.apply(null, uintArray)));\n  };\n  /**\n   * @file vtt-segment-loader.js\n   */\n\n\n  var VTT_LINE_TERMINATORS = new Uint8Array('\\n\\n'.split('').map(function (char) {\n    return char.charCodeAt(0);\n  }));\n  /**\n   * An object that manages segment loading and appending.\n   *\n   * @class VTTSegmentLoader\n   * @param {Object} options required and optional options\n   * @extends videojs.EventTarget\n   */\n\n  var VTTSegmentLoader = function (_SegmentLoader) {\n    inherits$1(VTTSegmentLoader, _SegmentLoader);\n\n    function VTTSegmentLoader(settings) {\n      var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n      classCallCheck$1(this, VTTSegmentLoader); // SegmentLoader requires a MediaSource be specified or it will throw an error;\n      // however, VTTSegmentLoader has no need of a media source, so delete the reference\n\n      var _this = possibleConstructorReturn$1(this, (VTTSegmentLoader.__proto__ || Object.getPrototypeOf(VTTSegmentLoader)).call(this, settings, options));\n\n      _this.mediaSource_ = null;\n      _this.subtitlesTrack_ = null;\n      return _this;\n    }\n    /**\n     * Indicates which time ranges are buffered\n     *\n     * @return {TimeRange}\n     *         TimeRange object representing the current buffered ranges\n     */\n\n\n    createClass$1(VTTSegmentLoader, [{\n      key: 'buffered_',\n      value: function buffered_() {\n        if (!this.subtitlesTrack_ || !this.subtitlesTrack_.cues.length) {\n          return videojs$1.createTimeRanges();\n        }\n\n        var cues = this.subtitlesTrack_.cues;\n        var start = cues[0].startTime;\n        var end = cues[cues.length - 1].startTime;\n        return videojs$1.createTimeRanges([[start, end]]);\n      }\n      /**\n       * Gets and sets init segment for the provided map\n       *\n       * @param {Object} map\n       *        The map object representing the init segment to get or set\n       * @param {Boolean=} set\n       *        If true, the init segment for the provided map should be saved\n       * @return {Object}\n       *         map object for desired init segment\n       */\n\n    }, {\n      key: 'initSegment',\n      value: function initSegment(map) {\n        var set$$1 = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;\n\n        if (!map) {\n          return null;\n        }\n\n        var id = initSegmentId(map);\n        var storedMap = this.initSegments_[id];\n\n        if (set$$1 && !storedMap && map.bytes) {\n          // append WebVTT line terminators to the media initialization segment if it exists\n          // to follow the WebVTT spec (https://w3c.github.io/webvtt/#file-structure) that\n          // requires two or more WebVTT line terminators between the WebVTT header and the\n          // rest of the file\n          var combinedByteLength = VTT_LINE_TERMINATORS.byteLength + map.bytes.byteLength;\n          var combinedSegment = new Uint8Array(combinedByteLength);\n          combinedSegment.set(map.bytes);\n          combinedSegment.set(VTT_LINE_TERMINATORS, map.bytes.byteLength);\n          this.initSegments_[id] = storedMap = {\n            resolvedUri: map.resolvedUri,\n            byterange: map.byterange,\n            bytes: combinedSegment\n          };\n        }\n\n        return storedMap || map;\n      }\n      /**\n       * Returns true if all configuration required for loading is present, otherwise false.\n       *\n       * @return {Boolean} True if the all configuration is ready for loading\n       * @private\n       */\n\n    }, {\n      key: 'couldBeginLoading_',\n      value: function couldBeginLoading_() {\n        return this.playlist_ && this.subtitlesTrack_ && !this.paused();\n      }\n      /**\n       * Once all the starting parameters have been specified, begin\n       * operation. This method should only be invoked from the INIT\n       * state.\n       *\n       * @private\n       */\n\n    }, {\n      key: 'init_',\n      value: function init_() {\n        this.state = 'READY';\n        this.resetEverything();\n        return this.monitorBuffer_();\n      }\n      /**\n       * Set a subtitle track on the segment loader to add subtitles to\n       *\n       * @param {TextTrack=} track\n       *        The text track to add loaded subtitles to\n       * @return {TextTrack}\n       *        Returns the subtitles track\n       */\n\n    }, {\n      key: 'track',\n      value: function track(_track) {\n        if (typeof _track === 'undefined') {\n          return this.subtitlesTrack_;\n        }\n\n        this.subtitlesTrack_ = _track; // if we were unpaused but waiting for a sourceUpdater, start\n        // buffering now\n\n        if (this.state === 'INIT' && this.couldBeginLoading_()) {\n          this.init_();\n        }\n\n        return this.subtitlesTrack_;\n      }\n      /**\n       * Remove any data in the source buffer between start and end times\n       * @param {Number} start - the start time of the region to remove from the buffer\n       * @param {Number} end - the end time of the region to remove from the buffer\n       */\n\n    }, {\n      key: 'remove',\n      value: function remove(start, end) {\n        removeCuesFromTrack(start, end, this.subtitlesTrack_);\n      }\n      /**\n       * fill the buffer with segements unless the sourceBuffers are\n       * currently updating\n       *\n       * Note: this function should only ever be called by monitorBuffer_\n       * and never directly\n       *\n       * @private\n       */\n\n    }, {\n      key: 'fillBuffer_',\n      value: function fillBuffer_() {\n        var _this2 = this;\n\n        if (!this.syncPoint_) {\n          this.syncPoint_ = this.syncController_.getSyncPoint(this.playlist_, this.duration_(), this.currentTimeline_, this.currentTime_());\n        } // see if we need to begin loading immediately\n\n\n        var segmentInfo = this.checkBuffer_(this.buffered_(), this.playlist_, this.mediaIndex, this.hasPlayed_(), this.currentTime_(), this.syncPoint_);\n        segmentInfo = this.skipEmptySegments_(segmentInfo);\n\n        if (!segmentInfo) {\n          return;\n        }\n\n        if (this.syncController_.timestampOffsetForTimeline(segmentInfo.timeline) === null) {\n          // We don't have the timestamp offset that we need to sync subtitles.\n          // Rerun on a timestamp offset or user interaction.\n          var checkTimestampOffset = function checkTimestampOffset() {\n            _this2.state = 'READY';\n\n            if (!_this2.paused()) {\n              // if not paused, queue a buffer check as soon as possible\n              _this2.monitorBuffer_();\n            }\n          };\n\n          this.syncController_.one('timestampoffset', checkTimestampOffset);\n          this.state = 'WAITING_ON_TIMELINE';\n          return;\n        }\n\n        this.loadSegment_(segmentInfo);\n      }\n      /**\n       * Prevents the segment loader from requesting segments we know contain no subtitles\n       * by walking forward until we find the next segment that we don't know whether it is\n       * empty or not.\n       *\n       * @param {Object} segmentInfo\n       *        a segment info object that describes the current segment\n       * @return {Object}\n       *         a segment info object that describes the current segment\n       */\n\n    }, {\n      key: 'skipEmptySegments_',\n      value: function skipEmptySegments_(segmentInfo) {\n        while (segmentInfo && segmentInfo.segment.empty) {\n          segmentInfo = this.generateSegmentInfo_(segmentInfo.playlist, segmentInfo.mediaIndex + 1, segmentInfo.startOfSegment + segmentInfo.duration, segmentInfo.isSyncRequest);\n        }\n\n        return segmentInfo;\n      }\n      /**\n       * append a decrypted segement to the SourceBuffer through a SourceUpdater\n       *\n       * @private\n       */\n\n    }, {\n      key: 'handleSegment_',\n      value: function handleSegment_() {\n        var _this3 = this;\n\n        if (!this.pendingSegment_ || !this.subtitlesTrack_) {\n          this.state = 'READY';\n          return;\n        }\n\n        this.state = 'APPENDING';\n        var segmentInfo = this.pendingSegment_;\n        var segment = segmentInfo.segment; // Make sure that vttjs has loaded, otherwise, wait till it finished loading\n\n        if (typeof window$1.WebVTT !== 'function' && this.subtitlesTrack_ && this.subtitlesTrack_.tech_) {\n          var loadHandler = function loadHandler() {\n            _this3.handleSegment_();\n          };\n\n          this.state = 'WAITING_ON_VTTJS';\n          this.subtitlesTrack_.tech_.one('vttjsloaded', loadHandler);\n          this.subtitlesTrack_.tech_.one('vttjserror', function () {\n            _this3.subtitlesTrack_.tech_.off('vttjsloaded', loadHandler);\n\n            _this3.error({\n              message: 'Error loading vtt.js'\n            });\n\n            _this3.state = 'READY';\n\n            _this3.pause();\n\n            _this3.trigger('error');\n          });\n          return;\n        }\n\n        segment.requested = true;\n\n        try {\n          this.parseVTTCues_(segmentInfo);\n        } catch (e) {\n          this.error({\n            message: e.message\n          });\n          this.state = 'READY';\n          this.pause();\n          return this.trigger('error');\n        }\n\n        this.updateTimeMapping_(segmentInfo, this.syncController_.timelines[segmentInfo.timeline], this.playlist_);\n\n        if (segmentInfo.isSyncRequest) {\n          this.trigger('syncinfoupdate');\n          this.pendingSegment_ = null;\n          this.state = 'READY';\n          return;\n        }\n\n        segmentInfo.byteLength = segmentInfo.bytes.byteLength;\n        this.mediaSecondsLoaded += segment.duration;\n\n        if (segmentInfo.cues.length) {\n          // remove any overlapping cues to prevent doubling\n          this.remove(segmentInfo.cues[0].endTime, segmentInfo.cues[segmentInfo.cues.length - 1].endTime);\n        }\n\n        segmentInfo.cues.forEach(function (cue) {\n          _this3.subtitlesTrack_.addCue(cue);\n        });\n        this.handleUpdateEnd_();\n      }\n      /**\n       * Uses the WebVTT parser to parse the segment response\n       *\n       * @param {Object} segmentInfo\n       *        a segment info object that describes the current segment\n       * @private\n       */\n\n    }, {\n      key: 'parseVTTCues_',\n      value: function parseVTTCues_(segmentInfo) {\n        var decoder = void 0;\n        var decodeBytesToString = false;\n\n        if (typeof window$1.TextDecoder === 'function') {\n          decoder = new window$1.TextDecoder('utf8');\n        } else {\n          decoder = window$1.WebVTT.StringDecoder();\n          decodeBytesToString = true;\n        }\n\n        var parser = new window$1.WebVTT.Parser(window$1, window$1.vttjs, decoder);\n        segmentInfo.cues = [];\n        segmentInfo.timestampmap = {\n          MPEGTS: 0,\n          LOCAL: 0\n        };\n        parser.oncue = segmentInfo.cues.push.bind(segmentInfo.cues);\n\n        parser.ontimestampmap = function (map) {\n          return segmentInfo.timestampmap = map;\n        };\n\n        parser.onparsingerror = function (error) {\n          videojs$1.log.warn('Error encountered when parsing cues: ' + error.message);\n        };\n\n        if (segmentInfo.segment.map) {\n          var mapData = segmentInfo.segment.map.bytes;\n\n          if (decodeBytesToString) {\n            mapData = uint8ToUtf8(mapData);\n          }\n\n          parser.parse(mapData);\n        }\n\n        var segmentData = segmentInfo.bytes;\n\n        if (decodeBytesToString) {\n          segmentData = uint8ToUtf8(segmentData);\n        }\n\n        parser.parse(segmentData);\n        parser.flush();\n      }\n      /**\n       * Updates the start and end times of any cues parsed by the WebVTT parser using\n       * the information parsed from the X-TIMESTAMP-MAP header and a TS to media time mapping\n       * from the SyncController\n       *\n       * @param {Object} segmentInfo\n       *        a segment info object that describes the current segment\n       * @param {Object} mappingObj\n       *        object containing a mapping from TS to media time\n       * @param {Object} playlist\n       *        the playlist object containing the segment\n       * @private\n       */\n\n    }, {\n      key: 'updateTimeMapping_',\n      value: function updateTimeMapping_(segmentInfo, mappingObj, playlist) {\n        var segment = segmentInfo.segment;\n\n        if (!mappingObj) {\n          // If the sync controller does not have a mapping of TS to Media Time for the\n          // timeline, then we don't have enough information to update the cue\n          // start/end times\n          return;\n        }\n\n        if (!segmentInfo.cues.length) {\n          // If there are no cues, we also do not have enough information to figure out\n          // segment timing. Mark that the segment contains no cues so we don't re-request\n          // an empty segment.\n          segment.empty = true;\n          return;\n        }\n\n        var timestampmap = segmentInfo.timestampmap;\n        var diff = timestampmap.MPEGTS / 90000 - timestampmap.LOCAL + mappingObj.mapping;\n        segmentInfo.cues.forEach(function (cue) {\n          // First convert cue time to TS time using the timestamp-map provided within the vtt\n          cue.startTime += diff;\n          cue.endTime += diff;\n        });\n\n        if (!playlist.syncInfo) {\n          var firstStart = segmentInfo.cues[0].startTime;\n          var lastStart = segmentInfo.cues[segmentInfo.cues.length - 1].startTime;\n          playlist.syncInfo = {\n            mediaSequence: playlist.mediaSequence + segmentInfo.mediaIndex,\n            time: Math.min(firstStart, lastStart - segment.duration)\n          };\n        }\n      }\n    }]);\n    return VTTSegmentLoader;\n  }(SegmentLoader);\n  /**\n   * @file ad-cue-tags.js\n   */\n\n  /**\n   * Searches for an ad cue that overlaps with the given mediaTime\n   */\n\n\n  var findAdCue = function findAdCue(track, mediaTime) {\n    var cues = track.cues;\n\n    for (var i = 0; i < cues.length; i++) {\n      var cue = cues[i];\n\n      if (mediaTime >= cue.adStartTime && mediaTime <= cue.adEndTime) {\n        return cue;\n      }\n    }\n\n    return null;\n  };\n\n  var updateAdCues = function updateAdCues(media, track) {\n    var offset = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 0;\n\n    if (!media.segments) {\n      return;\n    }\n\n    var mediaTime = offset;\n    var cue = void 0;\n\n    for (var i = 0; i < media.segments.length; i++) {\n      var segment = media.segments[i];\n\n      if (!cue) {\n        // Since the cues will span for at least the segment duration, adding a fudge\n        // factor of half segment duration will prevent duplicate cues from being\n        // created when timing info is not exact (e.g. cue start time initialized\n        // at 10.006677, but next call mediaTime is 10.003332 )\n        cue = findAdCue(track, mediaTime + segment.duration / 2);\n      }\n\n      if (cue) {\n        if ('cueIn' in segment) {\n          // Found a CUE-IN so end the cue\n          cue.endTime = mediaTime;\n          cue.adEndTime = mediaTime;\n          mediaTime += segment.duration;\n          cue = null;\n          continue;\n        }\n\n        if (mediaTime < cue.endTime) {\n          // Already processed this mediaTime for this cue\n          mediaTime += segment.duration;\n          continue;\n        } // otherwise extend cue until a CUE-IN is found\n\n\n        cue.endTime += segment.duration;\n      } else {\n        if ('cueOut' in segment) {\n          cue = new window$1.VTTCue(mediaTime, mediaTime + segment.duration, segment.cueOut);\n          cue.adStartTime = mediaTime; // Assumes tag format to be\n          // #EXT-X-CUE-OUT:30\n\n          cue.adEndTime = mediaTime + parseFloat(segment.cueOut);\n          track.addCue(cue);\n        }\n\n        if ('cueOutCont' in segment) {\n          // Entered into the middle of an ad cue\n          var adOffset = void 0;\n          var adTotal = void 0; // Assumes tag formate to be\n          // #EXT-X-CUE-OUT-CONT:10/30\n\n          var _segment$cueOutCont$s = segment.cueOutCont.split('/').map(parseFloat);\n\n          var _segment$cueOutCont$s2 = slicedToArray(_segment$cueOutCont$s, 2);\n\n          adOffset = _segment$cueOutCont$s2[0];\n          adTotal = _segment$cueOutCont$s2[1];\n          cue = new window$1.VTTCue(mediaTime, mediaTime + segment.duration, '');\n          cue.adStartTime = mediaTime - adOffset;\n          cue.adEndTime = cue.adStartTime + adTotal;\n          track.addCue(cue);\n        }\n      }\n\n      mediaTime += segment.duration;\n    }\n  };\n  /**\n   * @file sync-controller.js\n   */\n\n\n  var tsprobe = tsInspector.inspect;\n  var syncPointStrategies = [// Stategy \"VOD\": Handle the VOD-case where the sync-point is *always*\n  //                the equivalence display-time 0 === segment-index 0\n  {\n    name: 'VOD',\n    run: function run(syncController, playlist, duration$$1, currentTimeline, currentTime) {\n      if (duration$$1 !== Infinity) {\n        var syncPoint = {\n          time: 0,\n          segmentIndex: 0\n        };\n        return syncPoint;\n      }\n\n      return null;\n    }\n  }, // Stategy \"ProgramDateTime\": We have a program-date-time tag in this playlist\n  {\n    name: 'ProgramDateTime',\n    run: function run(syncController, playlist, duration$$1, currentTimeline, currentTime) {\n      if (!syncController.datetimeToDisplayTime) {\n        return null;\n      }\n\n      var segments = playlist.segments || [];\n      var syncPoint = null;\n      var lastDistance = null;\n      currentTime = currentTime || 0;\n\n      for (var i = 0; i < segments.length; i++) {\n        var segment = segments[i];\n\n        if (segment.dateTimeObject) {\n          var segmentTime = segment.dateTimeObject.getTime() / 1000;\n          var segmentStart = segmentTime + syncController.datetimeToDisplayTime;\n          var distance = Math.abs(currentTime - segmentStart); // Once the distance begins to increase, we have passed\n          // currentTime and can stop looking for better candidates\n\n          if (lastDistance !== null && lastDistance < distance) {\n            break;\n          }\n\n          lastDistance = distance;\n          syncPoint = {\n            time: segmentStart,\n            segmentIndex: i\n          };\n        }\n      }\n\n      return syncPoint;\n    }\n  }, // Stategy \"Segment\": We have a known time mapping for a timeline and a\n  //                    segment in the current timeline with timing data\n  {\n    name: 'Segment',\n    run: function run(syncController, playlist, duration$$1, currentTimeline, currentTime) {\n      var segments = playlist.segments || [];\n      var syncPoint = null;\n      var lastDistance = null;\n      currentTime = currentTime || 0;\n\n      for (var i = 0; i < segments.length; i++) {\n        var segment = segments[i];\n\n        if (segment.timeline === currentTimeline && typeof segment.start !== 'undefined') {\n          var distance = Math.abs(currentTime - segment.start); // Once the distance begins to increase, we have passed\n          // currentTime and can stop looking for better candidates\n\n          if (lastDistance !== null && lastDistance < distance) {\n            break;\n          }\n\n          if (!syncPoint || lastDistance === null || lastDistance >= distance) {\n            lastDistance = distance;\n            syncPoint = {\n              time: segment.start,\n              segmentIndex: i\n            };\n          }\n        }\n      }\n\n      return syncPoint;\n    }\n  }, // Stategy \"Discontinuity\": We have a discontinuity with a known\n  //                          display-time\n  {\n    name: 'Discontinuity',\n    run: function run(syncController, playlist, duration$$1, currentTimeline, currentTime) {\n      var syncPoint = null;\n      currentTime = currentTime || 0;\n\n      if (playlist.discontinuityStarts && playlist.discontinuityStarts.length) {\n        var lastDistance = null;\n\n        for (var i = 0; i < playlist.discontinuityStarts.length; i++) {\n          var segmentIndex = playlist.discontinuityStarts[i];\n          var discontinuity = playlist.discontinuitySequence + i + 1;\n          var discontinuitySync = syncController.discontinuities[discontinuity];\n\n          if (discontinuitySync) {\n            var distance = Math.abs(currentTime - discontinuitySync.time); // Once the distance begins to increase, we have passed\n            // currentTime and can stop looking for better candidates\n\n            if (lastDistance !== null && lastDistance < distance) {\n              break;\n            }\n\n            if (!syncPoint || lastDistance === null || lastDistance >= distance) {\n              lastDistance = distance;\n              syncPoint = {\n                time: discontinuitySync.time,\n                segmentIndex: segmentIndex\n              };\n            }\n          }\n        }\n      }\n\n      return syncPoint;\n    }\n  }, // Stategy \"Playlist\": We have a playlist with a known mapping of\n  //                     segment index to display time\n  {\n    name: 'Playlist',\n    run: function run(syncController, playlist, duration$$1, currentTimeline, currentTime) {\n      if (playlist.syncInfo) {\n        var syncPoint = {\n          time: playlist.syncInfo.time,\n          segmentIndex: playlist.syncInfo.mediaSequence - playlist.mediaSequence\n        };\n        return syncPoint;\n      }\n\n      return null;\n    }\n  }];\n\n  var SyncController = function (_videojs$EventTarget) {\n    inherits$1(SyncController, _videojs$EventTarget);\n\n    function SyncController() {\n      classCallCheck$1(this, SyncController); // Segment Loader state variables...\n      // ...for synching across variants\n\n      var _this = possibleConstructorReturn$1(this, (SyncController.__proto__ || Object.getPrototypeOf(SyncController)).call(this));\n\n      _this.inspectCache_ = undefined; // ...for synching across variants\n\n      _this.timelines = [];\n      _this.discontinuities = [];\n      _this.datetimeToDisplayTime = null;\n      _this.logger_ = logger('SyncController');\n      return _this;\n    }\n    /**\n     * Find a sync-point for the playlist specified\n     *\n     * A sync-point is defined as a known mapping from display-time to\n     * a segment-index in the current playlist.\n     *\n     * @param {Playlist} playlist\n     *        The playlist that needs a sync-point\n     * @param {Number} duration\n     *        Duration of the MediaSource (Infinite if playing a live source)\n     * @param {Number} currentTimeline\n     *        The last timeline from which a segment was loaded\n     * @returns {Object}\n     *          A sync-point object\n     */\n\n\n    createClass$1(SyncController, [{\n      key: 'getSyncPoint',\n      value: function getSyncPoint(playlist, duration$$1, currentTimeline, currentTime) {\n        var syncPoints = this.runStrategies_(playlist, duration$$1, currentTimeline, currentTime);\n\n        if (!syncPoints.length) {\n          // Signal that we need to attempt to get a sync-point manually\n          // by fetching a segment in the playlist and constructing\n          // a sync-point from that information\n          return null;\n        } // Now find the sync-point that is closest to the currentTime because\n        // that should result in the most accurate guess about which segment\n        // to fetch\n\n\n        return this.selectSyncPoint_(syncPoints, {\n          key: 'time',\n          value: currentTime\n        });\n      }\n      /**\n       * Calculate the amount of time that has expired off the playlist during playback\n       *\n       * @param {Playlist} playlist\n       *        Playlist object to calculate expired from\n       * @param {Number} duration\n       *        Duration of the MediaSource (Infinity if playling a live source)\n       * @returns {Number|null}\n       *          The amount of time that has expired off the playlist during playback. Null\n       *          if no sync-points for the playlist can be found.\n       */\n\n    }, {\n      key: 'getExpiredTime',\n      value: function getExpiredTime(playlist, duration$$1) {\n        if (!playlist || !playlist.segments) {\n          return null;\n        }\n\n        var syncPoints = this.runStrategies_(playlist, duration$$1, playlist.discontinuitySequence, 0); // Without sync-points, there is not enough information to determine the expired time\n\n        if (!syncPoints.length) {\n          return null;\n        }\n\n        var syncPoint = this.selectSyncPoint_(syncPoints, {\n          key: 'segmentIndex',\n          value: 0\n        }); // If the sync-point is beyond the start of the playlist, we want to subtract the\n        // duration from index 0 to syncPoint.segmentIndex instead of adding.\n\n        if (syncPoint.segmentIndex > 0) {\n          syncPoint.time *= -1;\n        }\n\n        return Math.abs(syncPoint.time + sumDurations(playlist, syncPoint.segmentIndex, 0));\n      }\n      /**\n       * Runs each sync-point strategy and returns a list of sync-points returned by the\n       * strategies\n       *\n       * @private\n       * @param {Playlist} playlist\n       *        The playlist that needs a sync-point\n       * @param {Number} duration\n       *        Duration of the MediaSource (Infinity if playing a live source)\n       * @param {Number} currentTimeline\n       *        The last timeline from which a segment was loaded\n       * @returns {Array}\n       *          A list of sync-point objects\n       */\n\n    }, {\n      key: 'runStrategies_',\n      value: function runStrategies_(playlist, duration$$1, currentTimeline, currentTime) {\n        var syncPoints = []; // Try to find a sync-point in by utilizing various strategies...\n\n        for (var i = 0; i < syncPointStrategies.length; i++) {\n          var strategy = syncPointStrategies[i];\n          var syncPoint = strategy.run(this, playlist, duration$$1, currentTimeline, currentTime);\n\n          if (syncPoint) {\n            syncPoint.strategy = strategy.name;\n            syncPoints.push({\n              strategy: strategy.name,\n              syncPoint: syncPoint\n            });\n          }\n        }\n\n        return syncPoints;\n      }\n      /**\n       * Selects the sync-point nearest the specified target\n       *\n       * @private\n       * @param {Array} syncPoints\n       *        List of sync-points to select from\n       * @param {Object} target\n       *        Object specifying the property and value we are targeting\n       * @param {String} target.key\n       *        Specifies the property to target. Must be either 'time' or 'segmentIndex'\n       * @param {Number} target.value\n       *        The value to target for the specified key.\n       * @returns {Object}\n       *          The sync-point nearest the target\n       */\n\n    }, {\n      key: 'selectSyncPoint_',\n      value: function selectSyncPoint_(syncPoints, target) {\n        var bestSyncPoint = syncPoints[0].syncPoint;\n        var bestDistance = Math.abs(syncPoints[0].syncPoint[target.key] - target.value);\n        var bestStrategy = syncPoints[0].strategy;\n\n        for (var i = 1; i < syncPoints.length; i++) {\n          var newDistance = Math.abs(syncPoints[i].syncPoint[target.key] - target.value);\n\n          if (newDistance < bestDistance) {\n            bestDistance = newDistance;\n            bestSyncPoint = syncPoints[i].syncPoint;\n            bestStrategy = syncPoints[i].strategy;\n          }\n        }\n\n        this.logger_('syncPoint for [' + target.key + ': ' + target.value + '] chosen with strategy' + (' [' + bestStrategy + ']: [time:' + bestSyncPoint.time + ',') + (' segmentIndex:' + bestSyncPoint.segmentIndex + ']'));\n        return bestSyncPoint;\n      }\n      /**\n       * Save any meta-data present on the segments when segments leave\n       * the live window to the playlist to allow for synchronization at the\n       * playlist level later.\n       *\n       * @param {Playlist} oldPlaylist - The previous active playlist\n       * @param {Playlist} newPlaylist - The updated and most current playlist\n       */\n\n    }, {\n      key: 'saveExpiredSegmentInfo',\n      value: function saveExpiredSegmentInfo(oldPlaylist, newPlaylist) {\n        var mediaSequenceDiff = newPlaylist.mediaSequence - oldPlaylist.mediaSequence; // When a segment expires from the playlist and it has a start time\n        // save that information as a possible sync-point reference in future\n\n        for (var i = mediaSequenceDiff - 1; i >= 0; i--) {\n          var lastRemovedSegment = oldPlaylist.segments[i];\n\n          if (lastRemovedSegment && typeof lastRemovedSegment.start !== 'undefined') {\n            newPlaylist.syncInfo = {\n              mediaSequence: oldPlaylist.mediaSequence + i,\n              time: lastRemovedSegment.start\n            };\n            this.logger_('playlist refresh sync: [time:' + newPlaylist.syncInfo.time + ',' + (' mediaSequence: ' + newPlaylist.syncInfo.mediaSequence + ']'));\n            this.trigger('syncinfoupdate');\n            break;\n          }\n        }\n      }\n      /**\n       * Save the mapping from playlist's ProgramDateTime to display. This should\n       * only ever happen once at the start of playback.\n       *\n       * @param {Playlist} playlist - The currently active playlist\n       */\n\n    }, {\n      key: 'setDateTimeMapping',\n      value: function setDateTimeMapping(playlist) {\n        if (!this.datetimeToDisplayTime && playlist.segments && playlist.segments.length && playlist.segments[0].dateTimeObject) {\n          var playlistTimestamp = playlist.segments[0].dateTimeObject.getTime() / 1000;\n          this.datetimeToDisplayTime = -playlistTimestamp;\n        }\n      }\n      /**\n       * Reset the state of the inspection cache when we do a rendition\n       * switch\n       */\n\n    }, {\n      key: 'reset',\n      value: function reset() {\n        this.inspectCache_ = undefined;\n      }\n      /**\n       * Probe or inspect a fmp4 or an mpeg2-ts segment to determine the start\n       * and end of the segment in it's internal \"media time\". Used to generate\n       * mappings from that internal \"media time\" to the display time that is\n       * shown on the player.\n       *\n       * @param {SegmentInfo} segmentInfo - The current active request information\n       */\n\n    }, {\n      key: 'probeSegmentInfo',\n      value: function probeSegmentInfo(segmentInfo) {\n        var segment = segmentInfo.segment;\n        var playlist = segmentInfo.playlist;\n        var timingInfo = void 0;\n\n        if (segment.map) {\n          timingInfo = this.probeMp4Segment_(segmentInfo);\n        } else {\n          timingInfo = this.probeTsSegment_(segmentInfo);\n        }\n\n        if (timingInfo) {\n          if (this.calculateSegmentTimeMapping_(segmentInfo, timingInfo)) {\n            this.saveDiscontinuitySyncInfo_(segmentInfo); // If the playlist does not have sync information yet, record that information\n            // now with segment timing information\n\n            if (!playlist.syncInfo) {\n              playlist.syncInfo = {\n                mediaSequence: playlist.mediaSequence + segmentInfo.mediaIndex,\n                time: segment.start\n              };\n            }\n          }\n        }\n\n        return timingInfo;\n      }\n      /**\n       * Probe an fmp4 or an mpeg2-ts segment to determine the start of the segment\n       * in it's internal \"media time\".\n       *\n       * @private\n       * @param {SegmentInfo} segmentInfo - The current active request information\n       * @return {object} The start and end time of the current segment in \"media time\"\n       */\n\n    }, {\n      key: 'probeMp4Segment_',\n      value: function probeMp4Segment_(segmentInfo) {\n        var segment = segmentInfo.segment;\n        var timescales = probe.timescale(segment.map.bytes);\n        var startTime = probe.startTime(timescales, segmentInfo.bytes);\n\n        if (segmentInfo.timestampOffset !== null) {\n          segmentInfo.timestampOffset -= startTime;\n        }\n\n        return {\n          start: startTime,\n          end: startTime + segment.duration\n        };\n      }\n      /**\n       * Probe an mpeg2-ts segment to determine the start and end of the segment\n       * in it's internal \"media time\".\n       *\n       * @private\n       * @param {SegmentInfo} segmentInfo - The current active request information\n       * @return {object} The start and end time of the current segment in \"media time\"\n       */\n\n    }, {\n      key: 'probeTsSegment_',\n      value: function probeTsSegment_(segmentInfo) {\n        var timeInfo = tsprobe(segmentInfo.bytes, this.inspectCache_);\n        var segmentStartTime = void 0;\n        var segmentEndTime = void 0;\n\n        if (!timeInfo) {\n          return null;\n        }\n\n        if (timeInfo.video && timeInfo.video.length === 2) {\n          this.inspectCache_ = timeInfo.video[1].dts;\n          segmentStartTime = timeInfo.video[0].dtsTime;\n          segmentEndTime = timeInfo.video[1].dtsTime;\n        } else if (timeInfo.audio && timeInfo.audio.length === 2) {\n          this.inspectCache_ = timeInfo.audio[1].dts;\n          segmentStartTime = timeInfo.audio[0].dtsTime;\n          segmentEndTime = timeInfo.audio[1].dtsTime;\n        }\n\n        return {\n          start: segmentStartTime,\n          end: segmentEndTime,\n          containsVideo: timeInfo.video && timeInfo.video.length === 2,\n          containsAudio: timeInfo.audio && timeInfo.audio.length === 2\n        };\n      }\n    }, {\n      key: 'timestampOffsetForTimeline',\n      value: function timestampOffsetForTimeline(timeline) {\n        if (typeof this.timelines[timeline] === 'undefined') {\n          return null;\n        }\n\n        return this.timelines[timeline].time;\n      }\n    }, {\n      key: 'mappingForTimeline',\n      value: function mappingForTimeline(timeline) {\n        if (typeof this.timelines[timeline] === 'undefined') {\n          return null;\n        }\n\n        return this.timelines[timeline].mapping;\n      }\n      /**\n       * Use the \"media time\" for a segment to generate a mapping to \"display time\" and\n       * save that display time to the segment.\n       *\n       * @private\n       * @param {SegmentInfo} segmentInfo\n       *        The current active request information\n       * @param {object} timingInfo\n       *        The start and end time of the current segment in \"media time\"\n       * @returns {Boolean}\n       *          Returns false if segment time mapping could not be calculated\n       */\n\n    }, {\n      key: 'calculateSegmentTimeMapping_',\n      value: function calculateSegmentTimeMapping_(segmentInfo, timingInfo) {\n        var segment = segmentInfo.segment;\n        var mappingObj = this.timelines[segmentInfo.timeline];\n\n        if (segmentInfo.timestampOffset !== null) {\n          mappingObj = {\n            time: segmentInfo.startOfSegment,\n            mapping: segmentInfo.startOfSegment - timingInfo.start\n          };\n          this.timelines[segmentInfo.timeline] = mappingObj;\n          this.trigger('timestampoffset');\n          this.logger_('time mapping for timeline ' + segmentInfo.timeline + ': ' + ('[time: ' + mappingObj.time + '] [mapping: ' + mappingObj.mapping + ']'));\n          segment.start = segmentInfo.startOfSegment;\n          segment.end = timingInfo.end + mappingObj.mapping;\n        } else if (mappingObj) {\n          segment.start = timingInfo.start + mappingObj.mapping;\n          segment.end = timingInfo.end + mappingObj.mapping;\n        } else {\n          return false;\n        }\n\n        return true;\n      }\n      /**\n       * Each time we have discontinuity in the playlist, attempt to calculate the location\n       * in display of the start of the discontinuity and save that. We also save an accuracy\n       * value so that we save values with the most accuracy (closest to 0.)\n       *\n       * @private\n       * @param {SegmentInfo} segmentInfo - The current active request information\n       */\n\n    }, {\n      key: 'saveDiscontinuitySyncInfo_',\n      value: function saveDiscontinuitySyncInfo_(segmentInfo) {\n        var playlist = segmentInfo.playlist;\n        var segment = segmentInfo.segment; // If the current segment is a discontinuity then we know exactly where\n        // the start of the range and it's accuracy is 0 (greater accuracy values\n        // mean more approximation)\n\n        if (segment.discontinuity) {\n          this.discontinuities[segment.timeline] = {\n            time: segment.start,\n            accuracy: 0\n          };\n        } else if (playlist.discontinuityStarts && playlist.discontinuityStarts.length) {\n          // Search for future discontinuities that we can provide better timing\n          // information for and save that information for sync purposes\n          for (var i = 0; i < playlist.discontinuityStarts.length; i++) {\n            var segmentIndex = playlist.discontinuityStarts[i];\n            var discontinuity = playlist.discontinuitySequence + i + 1;\n            var mediaIndexDiff = segmentIndex - segmentInfo.mediaIndex;\n            var accuracy = Math.abs(mediaIndexDiff);\n\n            if (!this.discontinuities[discontinuity] || this.discontinuities[discontinuity].accuracy > accuracy) {\n              var time = void 0;\n\n              if (mediaIndexDiff < 0) {\n                time = segment.start - sumDurations(playlist, segmentInfo.mediaIndex, segmentIndex);\n              } else {\n                time = segment.end + sumDurations(playlist, segmentInfo.mediaIndex + 1, segmentIndex);\n              }\n\n              this.discontinuities[discontinuity] = {\n                time: time,\n                accuracy: accuracy\n              };\n            }\n          }\n        }\n      }\n    }]);\n    return SyncController;\n  }(videojs$1.EventTarget);\n\n  var Decrypter$1 = new shimWorker(\"./decrypter-worker.worker.js\", function (window, document$$1) {\n    var self = this;\n\n    var decrypterWorker = function () {\n      /*\n       * pkcs7.pad\n       * https://github.com/brightcove/pkcs7\n       *\n       * Copyright (c) 2014 Brightcove\n       * Licensed under the apache2 license.\n       */\n\n      /**\n       * Returns the subarray of a Uint8Array without PKCS#7 padding.\n       * @param padded {Uint8Array} unencrypted bytes that have been padded\n       * @return {Uint8Array} the unpadded bytes\n       * @see http://tools.ietf.org/html/rfc5652\n       */\n      function unpad(padded) {\n        return padded.subarray(0, padded.byteLength - padded[padded.byteLength - 1]);\n      }\n\n      var classCallCheck = function classCallCheck(instance, Constructor) {\n        if (!(instance instanceof Constructor)) {\n          throw new TypeError(\"Cannot call a class as a function\");\n        }\n      };\n\n      var createClass = function () {\n        function defineProperties(target, props) {\n          for (var i = 0; i < props.length; i++) {\n            var descriptor = props[i];\n            descriptor.enumerable = descriptor.enumerable || false;\n            descriptor.configurable = true;\n            if (\"value\" in descriptor) descriptor.writable = true;\n            Object.defineProperty(target, descriptor.key, descriptor);\n          }\n        }\n\n        return function (Constructor, protoProps, staticProps) {\n          if (protoProps) defineProperties(Constructor.prototype, protoProps);\n          if (staticProps) defineProperties(Constructor, staticProps);\n          return Constructor;\n        };\n      }();\n\n      var inherits = function inherits(subClass, superClass) {\n        if (typeof superClass !== \"function\" && superClass !== null) {\n          throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass);\n        }\n\n        subClass.prototype = Object.create(superClass && superClass.prototype, {\n          constructor: {\n            value: subClass,\n            enumerable: false,\n            writable: true,\n            configurable: true\n          }\n        });\n        if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass;\n      };\n\n      var possibleConstructorReturn = function possibleConstructorReturn(self, call) {\n        if (!self) {\n          throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\");\n        }\n\n        return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self;\n      };\n      /**\n       * @file aes.js\n       *\n       * This file contains an adaptation of the AES decryption algorithm\n       * from the Standford Javascript Cryptography Library. That work is\n       * covered by the following copyright and permissions notice:\n       *\n       * Copyright 2009-2010 Emily Stark, Mike Hamburg, Dan Boneh.\n       * All rights reserved.\n       *\n       * Redistribution and use in source and binary forms, with or without\n       * modification, are permitted provided that the following conditions are\n       * met:\n       *\n       * 1. Redistributions of source code must retain the above copyright\n       *    notice, this list of conditions and the following disclaimer.\n       *\n       * 2. Redistributions in binary form must reproduce the above\n       *    copyright notice, this list of conditions and the following\n       *    disclaimer in the documentation and/or other materials provided\n       *    with the distribution.\n       *\n       * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR\n       * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED\n       * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE\n       * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> OR CONTRIBUTORS BE\n       * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR\n       * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF\n       * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR\n       * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,\n       * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE\n       * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN\n       * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n       *\n       * The views and conclusions contained in the software and documentation\n       * are those of the authors and should not be interpreted as representing\n       * official policies, either expressed or implied, of the authors.\n       */\n\n      /**\n       * Expand the S-box tables.\n       *\n       * @private\n       */\n\n\n      var precompute = function precompute() {\n        var tables = [[[], [], [], [], []], [[], [], [], [], []]];\n        var encTable = tables[0];\n        var decTable = tables[1];\n        var sbox = encTable[4];\n        var sboxInv = decTable[4];\n        var i = void 0;\n        var x = void 0;\n        var xInv = void 0;\n        var d = [];\n        var th = [];\n        var x2 = void 0;\n        var x4 = void 0;\n        var x8 = void 0;\n        var s = void 0;\n        var tEnc = void 0;\n        var tDec = void 0; // Compute double and third tables\n\n        for (i = 0; i < 256; i++) {\n          th[(d[i] = i << 1 ^ (i >> 7) * 283) ^ i] = i;\n        }\n\n        for (x = xInv = 0; !sbox[x]; x ^= x2 || 1, xInv = th[xInv] || 1) {\n          // Compute sbox\n          s = xInv ^ xInv << 1 ^ xInv << 2 ^ xInv << 3 ^ xInv << 4;\n          s = s >> 8 ^ s & 255 ^ 99;\n          sbox[x] = s;\n          sboxInv[s] = x; // Compute MixColumns\n\n          x8 = d[x4 = d[x2 = d[x]]];\n          tDec = x8 * 0x1010101 ^ x4 * 0x10001 ^ x2 * 0x101 ^ x * 0x1010100;\n          tEnc = d[s] * 0x101 ^ s * 0x1010100;\n\n          for (i = 0; i < 4; i++) {\n            encTable[i][x] = tEnc = tEnc << 24 ^ tEnc >>> 8;\n            decTable[i][s] = tDec = tDec << 24 ^ tDec >>> 8;\n          }\n        } // Compactify. Considerable speedup on Firefox.\n\n\n        for (i = 0; i < 5; i++) {\n          encTable[i] = encTable[i].slice(0);\n          decTable[i] = decTable[i].slice(0);\n        }\n\n        return tables;\n      };\n\n      var aesTables = null;\n      /**\n       * Schedule out an AES key for both encryption and decryption. This\n       * is a low-level class. Use a cipher mode to do bulk encryption.\n       *\n       * @class AES\n       * @param key {Array} The key as an array of 4, 6 or 8 words.\n       */\n\n      var AES = function () {\n        function AES(key) {\n          classCallCheck(this, AES);\n          /**\n           * The expanded S-box and inverse S-box tables. These will be computed\n           * on the client so that we don't have to send them down the wire.\n           *\n           * There are two tables, _tables[0] is for encryption and\n           * _tables[1] is for decryption.\n           *\n           * The first 4 sub-tables are the expanded S-box with MixColumns. The\n           * last (_tables[01][4]) is the S-box itself.\n           *\n           * @private\n           */\n          // if we have yet to precompute the S-box tables\n          // do so now\n\n          if (!aesTables) {\n            aesTables = precompute();\n          } // then make a copy of that object for use\n\n\n          this._tables = [[aesTables[0][0].slice(), aesTables[0][1].slice(), aesTables[0][2].slice(), aesTables[0][3].slice(), aesTables[0][4].slice()], [aesTables[1][0].slice(), aesTables[1][1].slice(), aesTables[1][2].slice(), aesTables[1][3].slice(), aesTables[1][4].slice()]];\n          var i = void 0;\n          var j = void 0;\n          var tmp = void 0;\n          var encKey = void 0;\n          var decKey = void 0;\n          var sbox = this._tables[0][4];\n          var decTable = this._tables[1];\n          var keyLen = key.length;\n          var rcon = 1;\n\n          if (keyLen !== 4 && keyLen !== 6 && keyLen !== 8) {\n            throw new Error('Invalid aes key size');\n          }\n\n          encKey = key.slice(0);\n          decKey = [];\n          this._key = [encKey, decKey]; // schedule encryption keys\n\n          for (i = keyLen; i < 4 * keyLen + 28; i++) {\n            tmp = encKey[i - 1]; // apply sbox\n\n            if (i % keyLen === 0 || keyLen === 8 && i % keyLen === 4) {\n              tmp = sbox[tmp >>> 24] << 24 ^ sbox[tmp >> 16 & 255] << 16 ^ sbox[tmp >> 8 & 255] << 8 ^ sbox[tmp & 255]; // shift rows and add rcon\n\n              if (i % keyLen === 0) {\n                tmp = tmp << 8 ^ tmp >>> 24 ^ rcon << 24;\n                rcon = rcon << 1 ^ (rcon >> 7) * 283;\n              }\n            }\n\n            encKey[i] = encKey[i - keyLen] ^ tmp;\n          } // schedule decryption keys\n\n\n          for (j = 0; i; j++, i--) {\n            tmp = encKey[j & 3 ? i : i - 4];\n\n            if (i <= 4 || j < 4) {\n              decKey[j] = tmp;\n            } else {\n              decKey[j] = decTable[0][sbox[tmp >>> 24]] ^ decTable[1][sbox[tmp >> 16 & 255]] ^ decTable[2][sbox[tmp >> 8 & 255]] ^ decTable[3][sbox[tmp & 255]];\n            }\n          }\n        }\n        /**\n         * Decrypt 16 bytes, specified as four 32-bit words.\n         *\n         * @param {Number} encrypted0 the first word to decrypt\n         * @param {Number} encrypted1 the second word to decrypt\n         * @param {Number} encrypted2 the third word to decrypt\n         * @param {Number} encrypted3 the fourth word to decrypt\n         * @param {Int32Array} out the array to write the decrypted words\n         * into\n         * @param {Number} offset the offset into the output array to start\n         * writing results\n         * @return {Array} The plaintext.\n         */\n\n\n        AES.prototype.decrypt = function decrypt$$1(encrypted0, encrypted1, encrypted2, encrypted3, out, offset) {\n          var key = this._key[1]; // state variables a,b,c,d are loaded with pre-whitened data\n\n          var a = encrypted0 ^ key[0];\n          var b = encrypted3 ^ key[1];\n          var c = encrypted2 ^ key[2];\n          var d = encrypted1 ^ key[3];\n          var a2 = void 0;\n          var b2 = void 0;\n          var c2 = void 0; // key.length === 2 ?\n\n          var nInnerRounds = key.length / 4 - 2;\n          var i = void 0;\n          var kIndex = 4;\n          var table = this._tables[1]; // load up the tables\n\n          var table0 = table[0];\n          var table1 = table[1];\n          var table2 = table[2];\n          var table3 = table[3];\n          var sbox = table[4]; // Inner rounds. Cribbed from OpenSSL.\n\n          for (i = 0; i < nInnerRounds; i++) {\n            a2 = table0[a >>> 24] ^ table1[b >> 16 & 255] ^ table2[c >> 8 & 255] ^ table3[d & 255] ^ key[kIndex];\n            b2 = table0[b >>> 24] ^ table1[c >> 16 & 255] ^ table2[d >> 8 & 255] ^ table3[a & 255] ^ key[kIndex + 1];\n            c2 = table0[c >>> 24] ^ table1[d >> 16 & 255] ^ table2[a >> 8 & 255] ^ table3[b & 255] ^ key[kIndex + 2];\n            d = table0[d >>> 24] ^ table1[a >> 16 & 255] ^ table2[b >> 8 & 255] ^ table3[c & 255] ^ key[kIndex + 3];\n            kIndex += 4;\n            a = a2;\n            b = b2;\n            c = c2;\n          } // Last round.\n\n\n          for (i = 0; i < 4; i++) {\n            out[(3 & -i) + offset] = sbox[a >>> 24] << 24 ^ sbox[b >> 16 & 255] << 16 ^ sbox[c >> 8 & 255] << 8 ^ sbox[d & 255] ^ key[kIndex++];\n            a2 = a;\n            a = b;\n            b = c;\n            c = d;\n            d = a2;\n          }\n        };\n\n        return AES;\n      }();\n      /**\n       * @file stream.js\n       */\n\n      /**\n       * A lightweight readable stream implemention that handles event dispatching.\n       *\n       * @class Stream\n       */\n\n\n      var Stream = function () {\n        function Stream() {\n          classCallCheck(this, Stream);\n          this.listeners = {};\n        }\n        /**\n         * Add a listener for a specified event type.\n         *\n         * @param {String} type the event name\n         * @param {Function} listener the callback to be invoked when an event of\n         * the specified type occurs\n         */\n\n\n        Stream.prototype.on = function on(type, listener) {\n          if (!this.listeners[type]) {\n            this.listeners[type] = [];\n          }\n\n          this.listeners[type].push(listener);\n        };\n        /**\n         * Remove a listener for a specified event type.\n         *\n         * @param {String} type the event name\n         * @param {Function} listener  a function previously registered for this\n         * type of event through `on`\n         * @return {Boolean} if we could turn it off or not\n         */\n\n\n        Stream.prototype.off = function off(type, listener) {\n          if (!this.listeners[type]) {\n            return false;\n          }\n\n          var index = this.listeners[type].indexOf(listener);\n          this.listeners[type].splice(index, 1);\n          return index > -1;\n        };\n        /**\n         * Trigger an event of the specified type on this stream. Any additional\n         * arguments to this function are passed as parameters to event listeners.\n         *\n         * @param {String} type the event name\n         */\n\n\n        Stream.prototype.trigger = function trigger(type) {\n          var callbacks = this.listeners[type];\n\n          if (!callbacks) {\n            return;\n          } // Slicing the arguments on every invocation of this method\n          // can add a significant amount of overhead. Avoid the\n          // intermediate object creation for the common case of a\n          // single callback argument\n\n\n          if (arguments.length === 2) {\n            var length = callbacks.length;\n\n            for (var i = 0; i < length; ++i) {\n              callbacks[i].call(this, arguments[1]);\n            }\n          } else {\n            var args = Array.prototype.slice.call(arguments, 1);\n            var _length = callbacks.length;\n\n            for (var _i = 0; _i < _length; ++_i) {\n              callbacks[_i].apply(this, args);\n            }\n          }\n        };\n        /**\n         * Destroys the stream and cleans up.\n         */\n\n\n        Stream.prototype.dispose = function dispose() {\n          this.listeners = {};\n        };\n        /**\n         * Forwards all `data` events on this stream to the destination stream. The\n         * destination stream should provide a method `push` to receive the data\n         * events as they arrive.\n         *\n         * @param {Stream} destination the stream that will receive all `data` events\n         * @see http://nodejs.org/api/stream.html#stream_readable_pipe_destination_options\n         */\n\n\n        Stream.prototype.pipe = function pipe(destination) {\n          this.on('data', function (data) {\n            destination.push(data);\n          });\n        };\n\n        return Stream;\n      }();\n      /**\n       * @file async-stream.js\n       */\n\n      /**\n       * A wrapper around the Stream class to use setTiemout\n       * and run stream \"jobs\" Asynchronously\n       *\n       * @class AsyncStream\n       * @extends Stream\n       */\n\n\n      var AsyncStream$$1 = function (_Stream) {\n        inherits(AsyncStream$$1, _Stream);\n\n        function AsyncStream$$1() {\n          classCallCheck(this, AsyncStream$$1);\n\n          var _this = possibleConstructorReturn(this, _Stream.call(this, Stream));\n\n          _this.jobs = [];\n          _this.delay = 1;\n          _this.timeout_ = null;\n          return _this;\n        }\n        /**\n         * process an async job\n         *\n         * @private\n         */\n\n\n        AsyncStream$$1.prototype.processJob_ = function processJob_() {\n          this.jobs.shift()();\n\n          if (this.jobs.length) {\n            this.timeout_ = setTimeout(this.processJob_.bind(this), this.delay);\n          } else {\n            this.timeout_ = null;\n          }\n        };\n        /**\n         * push a job into the stream\n         *\n         * @param {Function} job the job to push into the stream\n         */\n\n\n        AsyncStream$$1.prototype.push = function push(job) {\n          this.jobs.push(job);\n\n          if (!this.timeout_) {\n            this.timeout_ = setTimeout(this.processJob_.bind(this), this.delay);\n          }\n        };\n\n        return AsyncStream$$1;\n      }(Stream);\n      /**\n       * @file decrypter.js\n       *\n       * An asynchronous implementation of AES-128 CBC decryption with\n       * PKCS#7 padding.\n       */\n\n      /**\n       * Convert network-order (big-endian) bytes into their little-endian\n       * representation.\n       */\n\n\n      var ntoh = function ntoh(word) {\n        return word << 24 | (word & 0xff00) << 8 | (word & 0xff0000) >> 8 | word >>> 24;\n      };\n      /**\n       * Decrypt bytes using AES-128 with CBC and PKCS#7 padding.\n       *\n       * @param {Uint8Array} encrypted the encrypted bytes\n       * @param {Uint32Array} key the bytes of the decryption key\n       * @param {Uint32Array} initVector the initialization vector (IV) to\n       * use for the first round of CBC.\n       * @return {Uint8Array} the decrypted bytes\n       *\n       * @see http://en.wikipedia.org/wiki/Advanced_Encryption_Standard\n       * @see http://en.wikipedia.org/wiki/Block_cipher_mode_of_operation#Cipher_Block_Chaining_.28CBC.29\n       * @see https://tools.ietf.org/html/rfc2315\n       */\n\n\n      var decrypt$$1 = function decrypt$$1(encrypted, key, initVector) {\n        // word-level access to the encrypted bytes\n        var encrypted32 = new Int32Array(encrypted.buffer, encrypted.byteOffset, encrypted.byteLength >> 2);\n        var decipher = new AES(Array.prototype.slice.call(key)); // byte and word-level access for the decrypted output\n\n        var decrypted = new Uint8Array(encrypted.byteLength);\n        var decrypted32 = new Int32Array(decrypted.buffer); // temporary variables for working with the IV, encrypted, and\n        // decrypted data\n\n        var init0 = void 0;\n        var init1 = void 0;\n        var init2 = void 0;\n        var init3 = void 0;\n        var encrypted0 = void 0;\n        var encrypted1 = void 0;\n        var encrypted2 = void 0;\n        var encrypted3 = void 0; // iteration variable\n\n        var wordIx = void 0; // pull out the words of the IV to ensure we don't modify the\n        // passed-in reference and easier access\n\n        init0 = initVector[0];\n        init1 = initVector[1];\n        init2 = initVector[2];\n        init3 = initVector[3]; // decrypt four word sequences, applying cipher-block chaining (CBC)\n        // to each decrypted block\n\n        for (wordIx = 0; wordIx < encrypted32.length; wordIx += 4) {\n          // convert big-endian (network order) words into little-endian\n          // (javascript order)\n          encrypted0 = ntoh(encrypted32[wordIx]);\n          encrypted1 = ntoh(encrypted32[wordIx + 1]);\n          encrypted2 = ntoh(encrypted32[wordIx + 2]);\n          encrypted3 = ntoh(encrypted32[wordIx + 3]); // decrypt the block\n\n          decipher.decrypt(encrypted0, encrypted1, encrypted2, encrypted3, decrypted32, wordIx); // XOR with the IV, and restore network byte-order to obtain the\n          // plaintext\n\n          decrypted32[wordIx] = ntoh(decrypted32[wordIx] ^ init0);\n          decrypted32[wordIx + 1] = ntoh(decrypted32[wordIx + 1] ^ init1);\n          decrypted32[wordIx + 2] = ntoh(decrypted32[wordIx + 2] ^ init2);\n          decrypted32[wordIx + 3] = ntoh(decrypted32[wordIx + 3] ^ init3); // setup the IV for the next round\n\n          init0 = encrypted0;\n          init1 = encrypted1;\n          init2 = encrypted2;\n          init3 = encrypted3;\n        }\n\n        return decrypted;\n      };\n      /**\n       * The `Decrypter` class that manages decryption of AES\n       * data through `AsyncStream` objects and the `decrypt`\n       * function\n       *\n       * @param {Uint8Array} encrypted the encrypted bytes\n       * @param {Uint32Array} key the bytes of the decryption key\n       * @param {Uint32Array} initVector the initialization vector (IV) to\n       * @param {Function} done the function to run when done\n       * @class Decrypter\n       */\n\n\n      var Decrypter$$1 = function () {\n        function Decrypter$$1(encrypted, key, initVector, done) {\n          classCallCheck(this, Decrypter$$1);\n          var step = Decrypter$$1.STEP;\n          var encrypted32 = new Int32Array(encrypted.buffer);\n          var decrypted = new Uint8Array(encrypted.byteLength);\n          var i = 0;\n          this.asyncStream_ = new AsyncStream$$1(); // split up the encryption job and do the individual chunks asynchronously\n\n          this.asyncStream_.push(this.decryptChunk_(encrypted32.subarray(i, i + step), key, initVector, decrypted));\n\n          for (i = step; i < encrypted32.length; i += step) {\n            initVector = new Uint32Array([ntoh(encrypted32[i - 4]), ntoh(encrypted32[i - 3]), ntoh(encrypted32[i - 2]), ntoh(encrypted32[i - 1])]);\n            this.asyncStream_.push(this.decryptChunk_(encrypted32.subarray(i, i + step), key, initVector, decrypted));\n          } // invoke the done() callback when everything is finished\n\n\n          this.asyncStream_.push(function () {\n            // remove pkcs#7 padding from the decrypted bytes\n            done(null, unpad(decrypted));\n          });\n        }\n        /**\n         * a getter for step the maximum number of bytes to process at one time\n         *\n         * @return {Number} the value of step 32000\n         */\n\n        /**\n         * @private\n         */\n\n\n        Decrypter$$1.prototype.decryptChunk_ = function decryptChunk_(encrypted, key, initVector, decrypted) {\n          return function () {\n            var bytes = decrypt$$1(encrypted, key, initVector);\n            decrypted.set(bytes, encrypted.byteOffset);\n          };\n        };\n\n        createClass(Decrypter$$1, null, [{\n          key: 'STEP',\n          get: function get$$1() {\n            // 4 * 8000;\n            return 32000;\n          }\n        }]);\n        return Decrypter$$1;\n      }();\n      /**\n       * @file bin-utils.js\n       */\n\n      /**\n       * Creates an object for sending to a web worker modifying properties that are TypedArrays\n       * into a new object with seperated properties for the buffer, byteOffset, and byteLength.\n       *\n       * @param {Object} message\n       *        Object of properties and values to send to the web worker\n       * @return {Object}\n       *         Modified message with TypedArray values expanded\n       * @function createTransferableMessage\n       */\n\n\n      var createTransferableMessage = function createTransferableMessage(message) {\n        var transferable = {};\n        Object.keys(message).forEach(function (key) {\n          var value = message[key];\n\n          if (ArrayBuffer.isView(value)) {\n            transferable[key] = {\n              bytes: value.buffer,\n              byteOffset: value.byteOffset,\n              byteLength: value.byteLength\n            };\n          } else {\n            transferable[key] = value;\n          }\n        });\n        return transferable;\n      };\n      /**\n       * Our web worker interface so that things can talk to aes-decrypter\n       * that will be running in a web worker. the scope is passed to this by\n       * webworkify.\n       *\n       * @param {Object} self\n       *        the scope for the web worker\n       */\n\n\n      var DecrypterWorker = function DecrypterWorker(self) {\n        self.onmessage = function (event) {\n          var data = event.data;\n          var encrypted = new Uint8Array(data.encrypted.bytes, data.encrypted.byteOffset, data.encrypted.byteLength);\n          var key = new Uint32Array(data.key.bytes, data.key.byteOffset, data.key.byteLength / 4);\n          var iv = new Uint32Array(data.iv.bytes, data.iv.byteOffset, data.iv.byteLength / 4);\n          /* eslint-disable no-new, handle-callback-err */\n\n          new Decrypter$$1(encrypted, key, iv, function (err, bytes) {\n            self.postMessage(createTransferableMessage({\n              source: data.source,\n              decrypted: bytes\n            }), [bytes.buffer]);\n          });\n          /* eslint-enable */\n        };\n      };\n\n      var decrypterWorker = new DecrypterWorker(self);\n      return decrypterWorker;\n    }();\n  });\n  /**\n   * Convert the properties of an HLS track into an audioTrackKind.\n   *\n   * @private\n   */\n\n  var audioTrackKind_ = function audioTrackKind_(properties) {\n    var kind = properties.default ? 'main' : 'alternative';\n\n    if (properties.characteristics && properties.characteristics.indexOf('public.accessibility.describes-video') >= 0) {\n      kind = 'main-desc';\n    }\n\n    return kind;\n  };\n  /**\n   * Pause provided segment loader and playlist loader if active\n   *\n   * @param {SegmentLoader} segmentLoader\n   *        SegmentLoader to pause\n   * @param {Object} mediaType\n   *        Active media type\n   * @function stopLoaders\n   */\n\n\n  var stopLoaders = function stopLoaders(segmentLoader, mediaType) {\n    segmentLoader.abort();\n    segmentLoader.pause();\n\n    if (mediaType && mediaType.activePlaylistLoader) {\n      mediaType.activePlaylistLoader.pause();\n      mediaType.activePlaylistLoader = null;\n    }\n  };\n  /**\n   * Start loading provided segment loader and playlist loader\n   *\n   * @param {PlaylistLoader} playlistLoader\n   *        PlaylistLoader to start loading\n   * @param {Object} mediaType\n   *        Active media type\n   * @function startLoaders\n   */\n\n\n  var startLoaders = function startLoaders(playlistLoader, mediaType) {\n    // Segment loader will be started after `loadedmetadata` or `loadedplaylist` from the\n    // playlist loader\n    mediaType.activePlaylistLoader = playlistLoader;\n    playlistLoader.load();\n  };\n  /**\n   * Returns a function to be called when the media group changes. It performs a\n   * non-destructive (preserve the buffer) resync of the SegmentLoader. This is because a\n   * change of group is merely a rendition switch of the same content at another encoding,\n   * rather than a change of content, such as switching audio from English to Spanish.\n   *\n   * @param {String} type\n   *        MediaGroup type\n   * @param {Object} settings\n   *        Object containing required information for media groups\n   * @return {Function}\n   *         Handler for a non-destructive resync of SegmentLoader when the active media\n   *         group changes.\n   * @function onGroupChanged\n   */\n\n\n  var onGroupChanged = function onGroupChanged(type, settings) {\n    return function () {\n      var _settings$segmentLoad = settings.segmentLoaders,\n          segmentLoader = _settings$segmentLoad[type],\n          mainSegmentLoader = _settings$segmentLoad.main,\n          mediaType = settings.mediaTypes[type];\n      var activeTrack = mediaType.activeTrack();\n      var activeGroup = mediaType.activeGroup(activeTrack);\n      var previousActiveLoader = mediaType.activePlaylistLoader;\n      stopLoaders(segmentLoader, mediaType);\n\n      if (!activeGroup) {\n        // there is no group active\n        return;\n      }\n\n      if (!activeGroup.playlistLoader) {\n        if (previousActiveLoader) {\n          // The previous group had a playlist loader but the new active group does not\n          // this means we are switching from demuxed to muxed audio. In this case we want to\n          // do a destructive reset of the main segment loader and not restart the audio\n          // loaders.\n          mainSegmentLoader.resetEverything();\n        }\n\n        return;\n      } // Non-destructive resync\n\n\n      segmentLoader.resyncLoader();\n      startLoaders(activeGroup.playlistLoader, mediaType);\n    };\n  };\n  /**\n   * Returns a function to be called when the media track changes. It performs a\n   * destructive reset of the SegmentLoader to ensure we start loading as close to\n   * currentTime as possible.\n   *\n   * @param {String} type\n   *        MediaGroup type\n   * @param {Object} settings\n   *        Object containing required information for media groups\n   * @return {Function}\n   *         Handler for a destructive reset of SegmentLoader when the active media\n   *         track changes.\n   * @function onTrackChanged\n   */\n\n\n  var onTrackChanged = function onTrackChanged(type, settings) {\n    return function () {\n      var _settings$segmentLoad2 = settings.segmentLoaders,\n          segmentLoader = _settings$segmentLoad2[type],\n          mainSegmentLoader = _settings$segmentLoad2.main,\n          mediaType = settings.mediaTypes[type];\n      var activeTrack = mediaType.activeTrack();\n      var activeGroup = mediaType.activeGroup(activeTrack);\n      var previousActiveLoader = mediaType.activePlaylistLoader;\n      stopLoaders(segmentLoader, mediaType);\n\n      if (!activeGroup) {\n        // there is no group active so we do not want to restart loaders\n        return;\n      }\n\n      if (!activeGroup.playlistLoader) {\n        // when switching from demuxed audio/video to muxed audio/video (noted by no playlist\n        // loader for the audio group), we want to do a destructive reset of the main segment\n        // loader and not restart the audio loaders\n        mainSegmentLoader.resetEverything();\n        return;\n      }\n\n      if (previousActiveLoader === activeGroup.playlistLoader) {\n        // Nothing has actually changed. This can happen because track change events can fire\n        // multiple times for a \"single\" change. One for enabling the new active track, and\n        // one for disabling the track that was active\n        startLoaders(activeGroup.playlistLoader, mediaType);\n        return;\n      }\n\n      if (segmentLoader.track) {\n        // For WebVTT, set the new text track in the segmentloader\n        segmentLoader.track(activeTrack);\n      } // destructive reset\n\n\n      segmentLoader.resetEverything();\n      startLoaders(activeGroup.playlistLoader, mediaType);\n    };\n  };\n\n  var onError = {\n    /**\n     * Returns a function to be called when a SegmentLoader or PlaylistLoader encounters\n     * an error.\n     *\n     * @param {String} type\n     *        MediaGroup type\n     * @param {Object} settings\n     *        Object containing required information for media groups\n     * @return {Function}\n     *         Error handler. Logs warning (or error if the playlist is blacklisted) to\n     *         console and switches back to default audio track.\n     * @function onError.AUDIO\n     */\n    AUDIO: function AUDIO(type, settings) {\n      return function () {\n        var segmentLoader = settings.segmentLoaders[type],\n            mediaType = settings.mediaTypes[type],\n            blacklistCurrentPlaylist = settings.blacklistCurrentPlaylist;\n        stopLoaders(segmentLoader, mediaType); // switch back to default audio track\n\n        var activeTrack = mediaType.activeTrack();\n        var activeGroup = mediaType.activeGroup();\n        var id = (activeGroup.filter(function (group) {\n          return group.default;\n        })[0] || activeGroup[0]).id;\n        var defaultTrack = mediaType.tracks[id];\n\n        if (activeTrack === defaultTrack) {\n          // Default track encountered an error. All we can do now is blacklist the current\n          // rendition and hope another will switch audio groups\n          blacklistCurrentPlaylist({\n            message: 'Problem encountered loading the default audio track.'\n          });\n          return;\n        }\n\n        videojs$1.log.warn('Problem encountered loading the alternate audio track.' + 'Switching back to default.');\n\n        for (var trackId in mediaType.tracks) {\n          mediaType.tracks[trackId].enabled = mediaType.tracks[trackId] === defaultTrack;\n        }\n\n        mediaType.onTrackChanged();\n      };\n    },\n\n    /**\n     * Returns a function to be called when a SegmentLoader or PlaylistLoader encounters\n     * an error.\n     *\n     * @param {String} type\n     *        MediaGroup type\n     * @param {Object} settings\n     *        Object containing required information for media groups\n     * @return {Function}\n     *         Error handler. Logs warning to console and disables the active subtitle track\n     * @function onError.SUBTITLES\n     */\n    SUBTITLES: function SUBTITLES(type, settings) {\n      return function () {\n        var segmentLoader = settings.segmentLoaders[type],\n            mediaType = settings.mediaTypes[type];\n        videojs$1.log.warn('Problem encountered loading the subtitle track.' + 'Disabling subtitle track.');\n        stopLoaders(segmentLoader, mediaType);\n        var track = mediaType.activeTrack();\n\n        if (track) {\n          track.mode = 'disabled';\n        }\n\n        mediaType.onTrackChanged();\n      };\n    }\n  };\n  var setupListeners = {\n    /**\n     * Setup event listeners for audio playlist loader\n     *\n     * @param {String} type\n     *        MediaGroup type\n     * @param {PlaylistLoader|null} playlistLoader\n     *        PlaylistLoader to register listeners on\n     * @param {Object} settings\n     *        Object containing required information for media groups\n     * @function setupListeners.AUDIO\n     */\n    AUDIO: function AUDIO(type, playlistLoader, settings) {\n      if (!playlistLoader) {\n        // no playlist loader means audio will be muxed with the video\n        return;\n      }\n\n      var tech = settings.tech,\n          requestOptions = settings.requestOptions,\n          segmentLoader = settings.segmentLoaders[type];\n      playlistLoader.on('loadedmetadata', function () {\n        var media = playlistLoader.media();\n        segmentLoader.playlist(media, requestOptions); // if the video is already playing, or if this isn't a live video and preload\n        // permits, start downloading segments\n\n        if (!tech.paused() || media.endList && tech.preload() !== 'none') {\n          segmentLoader.load();\n        }\n      });\n      playlistLoader.on('loadedplaylist', function () {\n        segmentLoader.playlist(playlistLoader.media(), requestOptions); // If the player isn't paused, ensure that the segment loader is running\n\n        if (!tech.paused()) {\n          segmentLoader.load();\n        }\n      });\n      playlistLoader.on('error', onError[type](type, settings));\n    },\n\n    /**\n     * Setup event listeners for subtitle playlist loader\n     *\n     * @param {String} type\n     *        MediaGroup type\n     * @param {PlaylistLoader|null} playlistLoader\n     *        PlaylistLoader to register listeners on\n     * @param {Object} settings\n     *        Object containing required information for media groups\n     * @function setupListeners.SUBTITLES\n     */\n    SUBTITLES: function SUBTITLES(type, playlistLoader, settings) {\n      var tech = settings.tech,\n          requestOptions = settings.requestOptions,\n          segmentLoader = settings.segmentLoaders[type],\n          mediaType = settings.mediaTypes[type];\n      playlistLoader.on('loadedmetadata', function () {\n        var media = playlistLoader.media();\n        segmentLoader.playlist(media, requestOptions);\n        segmentLoader.track(mediaType.activeTrack()); // if the video is already playing, or if this isn't a live video and preload\n        // permits, start downloading segments\n\n        if (!tech.paused() || media.endList && tech.preload() !== 'none') {\n          segmentLoader.load();\n        }\n      });\n      playlistLoader.on('loadedplaylist', function () {\n        segmentLoader.playlist(playlistLoader.media(), requestOptions); // If the player isn't paused, ensure that the segment loader is running\n\n        if (!tech.paused()) {\n          segmentLoader.load();\n        }\n      });\n      playlistLoader.on('error', onError[type](type, settings));\n    }\n  };\n\n  var byGroupId = function byGroupId(type, groupId) {\n    return function (playlist) {\n      return playlist.attributes[type] === groupId;\n    };\n  };\n\n  var byResolvedUri = function byResolvedUri(resolvedUri) {\n    return function (playlist) {\n      return playlist.resolvedUri === resolvedUri;\n    };\n  };\n\n  var initialize = {\n    /**\n     * Setup PlaylistLoaders and AudioTracks for the audio groups\n     *\n     * @param {String} type\n     *        MediaGroup type\n     * @param {Object} settings\n     *        Object containing required information for media groups\n     * @function initialize.AUDIO\n     */\n    'AUDIO': function AUDIO(type, settings) {\n      var hls = settings.hls,\n          sourceType = settings.sourceType,\n          segmentLoader = settings.segmentLoaders[type],\n          withCredentials = settings.requestOptions.withCredentials,\n          _settings$master = settings.master,\n          mediaGroups = _settings$master.mediaGroups,\n          playlists = _settings$master.playlists,\n          _settings$mediaTypes$ = settings.mediaTypes[type],\n          groups = _settings$mediaTypes$.groups,\n          tracks = _settings$mediaTypes$.tracks,\n          masterPlaylistLoader = settings.masterPlaylistLoader; // force a default if we have none\n\n      if (!mediaGroups[type] || Object.keys(mediaGroups[type]).length === 0) {\n        mediaGroups[type] = {\n          main: {\n            default: {\n              default: true\n            }\n          }\n        };\n      }\n\n      for (var groupId in mediaGroups[type]) {\n        if (!groups[groupId]) {\n          groups[groupId] = [];\n        } // List of playlists that have an AUDIO attribute value matching the current\n        // group ID\n\n\n        var groupPlaylists = playlists.filter(byGroupId(type, groupId));\n\n        for (var variantLabel in mediaGroups[type][groupId]) {\n          var properties = mediaGroups[type][groupId][variantLabel]; // List of playlists for the current group ID that have a matching uri with\n          // this alternate audio variant\n\n          var matchingPlaylists = groupPlaylists.filter(byResolvedUri(properties.resolvedUri));\n\n          if (matchingPlaylists.length) {\n            // If there is a playlist that has the same uri as this audio variant, assume\n            // that the playlist is audio only. We delete the resolvedUri property here\n            // to prevent a playlist loader from being created so that we don't have\n            // both the main and audio segment loaders loading the same audio segments\n            // from the same playlist.\n            delete properties.resolvedUri;\n          }\n\n          var playlistLoader = void 0;\n\n          if (properties.resolvedUri) {\n            playlistLoader = new PlaylistLoader(properties.resolvedUri, hls, withCredentials);\n          } else if (properties.playlists && sourceType === 'dash') {\n            playlistLoader = new DashPlaylistLoader(properties.playlists[0], hls, withCredentials, masterPlaylistLoader);\n          } else {\n            // no resolvedUri means the audio is muxed with the video when using this\n            // audio track\n            playlistLoader = null;\n          }\n\n          properties = videojs$1.mergeOptions({\n            id: variantLabel,\n            playlistLoader: playlistLoader\n          }, properties);\n          setupListeners[type](type, properties.playlistLoader, settings);\n          groups[groupId].push(properties);\n\n          if (typeof tracks[variantLabel] === 'undefined') {\n            var track = new videojs$1.AudioTrack({\n              id: variantLabel,\n              kind: audioTrackKind_(properties),\n              enabled: false,\n              language: properties.language,\n              default: properties.default,\n              label: variantLabel\n            });\n            tracks[variantLabel] = track;\n          }\n        }\n      } // setup single error event handler for the segment loader\n\n\n      segmentLoader.on('error', onError[type](type, settings));\n    },\n\n    /**\n     * Setup PlaylistLoaders and TextTracks for the subtitle groups\n     *\n     * @param {String} type\n     *        MediaGroup type\n     * @param {Object} settings\n     *        Object containing required information for media groups\n     * @function initialize.SUBTITLES\n     */\n    'SUBTITLES': function SUBTITLES(type, settings) {\n      var tech = settings.tech,\n          hls = settings.hls,\n          sourceType = settings.sourceType,\n          segmentLoader = settings.segmentLoaders[type],\n          withCredentials = settings.requestOptions.withCredentials,\n          mediaGroups = settings.master.mediaGroups,\n          _settings$mediaTypes$2 = settings.mediaTypes[type],\n          groups = _settings$mediaTypes$2.groups,\n          tracks = _settings$mediaTypes$2.tracks,\n          masterPlaylistLoader = settings.masterPlaylistLoader;\n\n      for (var groupId in mediaGroups[type]) {\n        if (!groups[groupId]) {\n          groups[groupId] = [];\n        }\n\n        for (var variantLabel in mediaGroups[type][groupId]) {\n          if (mediaGroups[type][groupId][variantLabel].forced) {\n            // Subtitle playlists with the forced attribute are not selectable in Safari.\n            // According to Apple's HLS Authoring Specification:\n            //   If content has forced subtitles and regular subtitles in a given language,\n            //   the regular subtitles track in that language MUST contain both the forced\n            //   subtitles and the regular subtitles for that language.\n            // Because of this requirement and that Safari does not add forced subtitles,\n            // forced subtitles are skipped here to maintain consistent experience across\n            // all platforms\n            continue;\n          }\n\n          var properties = mediaGroups[type][groupId][variantLabel];\n          var playlistLoader = void 0;\n\n          if (sourceType === 'hls') {\n            playlistLoader = new PlaylistLoader(properties.resolvedUri, hls, withCredentials);\n          } else if (sourceType === 'dash') {\n            playlistLoader = new DashPlaylistLoader(properties.playlists[0], hls, withCredentials, masterPlaylistLoader);\n          }\n\n          properties = videojs$1.mergeOptions({\n            id: variantLabel,\n            playlistLoader: playlistLoader\n          }, properties);\n          setupListeners[type](type, properties.playlistLoader, settings);\n          groups[groupId].push(properties);\n\n          if (typeof tracks[variantLabel] === 'undefined') {\n            var track = tech.addRemoteTextTrack({\n              id: variantLabel,\n              kind: 'subtitles',\n              default: properties.default && properties.autoselect,\n              language: properties.language,\n              label: variantLabel\n            }, false).track;\n            tracks[variantLabel] = track;\n          }\n        }\n      } // setup single error event handler for the segment loader\n\n\n      segmentLoader.on('error', onError[type](type, settings));\n    },\n\n    /**\n     * Setup TextTracks for the closed-caption groups\n     *\n     * @param {String} type\n     *        MediaGroup type\n     * @param {Object} settings\n     *        Object containing required information for media groups\n     * @function initialize['CLOSED-CAPTIONS']\n     */\n    'CLOSED-CAPTIONS': function CLOSEDCAPTIONS(type, settings) {\n      var tech = settings.tech,\n          mediaGroups = settings.master.mediaGroups,\n          _settings$mediaTypes$3 = settings.mediaTypes[type],\n          groups = _settings$mediaTypes$3.groups,\n          tracks = _settings$mediaTypes$3.tracks;\n\n      for (var groupId in mediaGroups[type]) {\n        if (!groups[groupId]) {\n          groups[groupId] = [];\n        }\n\n        for (var variantLabel in mediaGroups[type][groupId]) {\n          var properties = mediaGroups[type][groupId][variantLabel]; // We only support CEA608 captions for now, so ignore anything that\n          // doesn't use a CCx INSTREAM-ID\n\n          if (!properties.instreamId.match(/CC\\d/)) {\n            continue;\n          } // No PlaylistLoader is required for Closed-Captions because the captions are\n          // embedded within the video stream\n\n\n          groups[groupId].push(videojs$1.mergeOptions({\n            id: variantLabel\n          }, properties));\n\n          if (typeof tracks[variantLabel] === 'undefined') {\n            var track = tech.addRemoteTextTrack({\n              id: properties.instreamId,\n              kind: 'captions',\n              default: properties.default && properties.autoselect,\n              language: properties.language,\n              label: variantLabel\n            }, false).track;\n            tracks[variantLabel] = track;\n          }\n        }\n      }\n    }\n  };\n  /**\n   * Returns a function used to get the active group of the provided type\n   *\n   * @param {String} type\n   *        MediaGroup type\n   * @param {Object} settings\n   *        Object containing required information for media groups\n   * @return {Function}\n   *         Function that returns the active media group for the provided type. Takes an\n   *         optional parameter {TextTrack} track. If no track is provided, a list of all\n   *         variants in the group, otherwise the variant corresponding to the provided\n   *         track is returned.\n   * @function activeGroup\n   */\n\n  var activeGroup = function activeGroup(type, settings) {\n    return function (track) {\n      var masterPlaylistLoader = settings.masterPlaylistLoader,\n          groups = settings.mediaTypes[type].groups;\n      var media = masterPlaylistLoader.media();\n\n      if (!media) {\n        return null;\n      }\n\n      var variants = null;\n\n      if (media.attributes[type]) {\n        variants = groups[media.attributes[type]];\n      }\n\n      variants = variants || groups.main;\n\n      if (typeof track === 'undefined') {\n        return variants;\n      }\n\n      if (track === null) {\n        // An active track was specified so a corresponding group is expected. track === null\n        // means no track is currently active so there is no corresponding group\n        return null;\n      }\n\n      return variants.filter(function (props) {\n        return props.id === track.id;\n      })[0] || null;\n    };\n  };\n\n  var activeTrack = {\n    /**\n     * Returns a function used to get the active track of type provided\n     *\n     * @param {String} type\n     *        MediaGroup type\n     * @param {Object} settings\n     *        Object containing required information for media groups\n     * @return {Function}\n     *         Function that returns the active media track for the provided type. Returns\n     *         null if no track is active\n     * @function activeTrack.AUDIO\n     */\n    AUDIO: function AUDIO(type, settings) {\n      return function () {\n        var tracks = settings.mediaTypes[type].tracks;\n\n        for (var id in tracks) {\n          if (tracks[id].enabled) {\n            return tracks[id];\n          }\n        }\n\n        return null;\n      };\n    },\n\n    /**\n     * Returns a function used to get the active track of type provided\n     *\n     * @param {String} type\n     *        MediaGroup type\n     * @param {Object} settings\n     *        Object containing required information for media groups\n     * @return {Function}\n     *         Function that returns the active media track for the provided type. Returns\n     *         null if no track is active\n     * @function activeTrack.SUBTITLES\n     */\n    SUBTITLES: function SUBTITLES(type, settings) {\n      return function () {\n        var tracks = settings.mediaTypes[type].tracks;\n\n        for (var id in tracks) {\n          if (tracks[id].mode === 'showing') {\n            return tracks[id];\n          }\n        }\n\n        return null;\n      };\n    }\n  };\n  /**\n   * Setup PlaylistLoaders and Tracks for media groups (Audio, Subtitles,\n   * Closed-Captions) specified in the master manifest.\n   *\n   * @param {Object} settings\n   *        Object containing required information for setting up the media groups\n   * @param {SegmentLoader} settings.segmentLoaders.AUDIO\n   *        Audio segment loader\n   * @param {SegmentLoader} settings.segmentLoaders.SUBTITLES\n   *        Subtitle segment loader\n   * @param {SegmentLoader} settings.segmentLoaders.main\n   *        Main segment loader\n   * @param {Tech} settings.tech\n   *        The tech of the player\n   * @param {Object} settings.requestOptions\n   *        XHR request options used by the segment loaders\n   * @param {PlaylistLoader} settings.masterPlaylistLoader\n   *        PlaylistLoader for the master source\n   * @param {HlsHandler} settings.hls\n   *        HLS SourceHandler\n   * @param {Object} settings.master\n   *        The parsed master manifest\n   * @param {Object} settings.mediaTypes\n   *        Object to store the loaders, tracks, and utility methods for each media type\n   * @param {Function} settings.blacklistCurrentPlaylist\n   *        Blacklists the current rendition and forces a rendition switch.\n   * @function setupMediaGroups\n   */\n\n  var setupMediaGroups = function setupMediaGroups(settings) {\n    ['AUDIO', 'SUBTITLES', 'CLOSED-CAPTIONS'].forEach(function (type) {\n      initialize[type](type, settings);\n    });\n    var mediaTypes = settings.mediaTypes,\n        masterPlaylistLoader = settings.masterPlaylistLoader,\n        tech = settings.tech,\n        hls = settings.hls; // setup active group and track getters and change event handlers\n\n    ['AUDIO', 'SUBTITLES'].forEach(function (type) {\n      mediaTypes[type].activeGroup = activeGroup(type, settings);\n      mediaTypes[type].activeTrack = activeTrack[type](type, settings);\n      mediaTypes[type].onGroupChanged = onGroupChanged(type, settings);\n      mediaTypes[type].onTrackChanged = onTrackChanged(type, settings);\n    }); // DO NOT enable the default subtitle or caption track.\n    // DO enable the default audio track\n\n    var audioGroup = mediaTypes.AUDIO.activeGroup();\n    var groupId = (audioGroup.filter(function (group) {\n      return group.default;\n    })[0] || audioGroup[0]).id;\n    mediaTypes.AUDIO.tracks[groupId].enabled = true;\n    mediaTypes.AUDIO.onTrackChanged();\n    masterPlaylistLoader.on('mediachange', function () {\n      ['AUDIO', 'SUBTITLES'].forEach(function (type) {\n        return mediaTypes[type].onGroupChanged();\n      });\n    }); // custom audio track change event handler for usage event\n\n    var onAudioTrackChanged = function onAudioTrackChanged() {\n      mediaTypes.AUDIO.onTrackChanged();\n      tech.trigger({\n        type: 'usage',\n        name: 'hls-audio-change'\n      });\n    };\n\n    tech.audioTracks().addEventListener('change', onAudioTrackChanged);\n    tech.remoteTextTracks().addEventListener('change', mediaTypes.SUBTITLES.onTrackChanged);\n    hls.on('dispose', function () {\n      tech.audioTracks().removeEventListener('change', onAudioTrackChanged);\n      tech.remoteTextTracks().removeEventListener('change', mediaTypes.SUBTITLES.onTrackChanged);\n    }); // clear existing audio tracks and add the ones we just created\n\n    tech.clearTracks('audio');\n\n    for (var id in mediaTypes.AUDIO.tracks) {\n      tech.audioTracks().addTrack(mediaTypes.AUDIO.tracks[id]);\n    }\n  };\n  /**\n   * Creates skeleton object used to store the loaders, tracks, and utility methods for each\n   * media type\n   *\n   * @return {Object}\n   *         Object to store the loaders, tracks, and utility methods for each media type\n   * @function createMediaTypes\n   */\n\n\n  var createMediaTypes = function createMediaTypes() {\n    var mediaTypes = {};\n    ['AUDIO', 'SUBTITLES', 'CLOSED-CAPTIONS'].forEach(function (type) {\n      mediaTypes[type] = {\n        groups: {},\n        tracks: {},\n        activePlaylistLoader: null,\n        activeGroup: noop$1,\n        activeTrack: noop$1,\n        onGroupChanged: noop$1,\n        onTrackChanged: noop$1\n      };\n    });\n    return mediaTypes;\n  };\n  /**\n   * @file master-playlist-controller.js\n   */\n\n\n  var ABORT_EARLY_BLACKLIST_SECONDS = 60 * 2;\n  var Hls = void 0; // SegmentLoader stats that need to have each loader's\n  // values summed to calculate the final value\n\n  var loaderStats = ['mediaRequests', 'mediaRequestsAborted', 'mediaRequestsTimedout', 'mediaRequestsErrored', 'mediaTransferDuration', 'mediaBytesTransferred'];\n\n  var sumLoaderStat = function sumLoaderStat(stat) {\n    return this.audioSegmentLoader_[stat] + this.mainSegmentLoader_[stat];\n  };\n  /**\n   * the master playlist controller controller all interactons\n   * between playlists and segmentloaders. At this time this mainly\n   * involves a master playlist and a series of audio playlists\n   * if they are available\n   *\n   * @class MasterPlaylistController\n   * @extends videojs.EventTarget\n   */\n\n\n  var MasterPlaylistController = function (_videojs$EventTarget) {\n    inherits$1(MasterPlaylistController, _videojs$EventTarget);\n\n    function MasterPlaylistController(options) {\n      classCallCheck$1(this, MasterPlaylistController);\n\n      var _this = possibleConstructorReturn$1(this, (MasterPlaylistController.__proto__ || Object.getPrototypeOf(MasterPlaylistController)).call(this));\n\n      var url = options.url,\n          withCredentials = options.withCredentials,\n          tech = options.tech,\n          bandwidth = options.bandwidth,\n          externHls = options.externHls,\n          useCueTags = options.useCueTags,\n          blacklistDuration = options.blacklistDuration,\n          enableLowInitialPlaylist = options.enableLowInitialPlaylist,\n          sourceType = options.sourceType,\n          seekTo = options.seekTo;\n\n      if (!url) {\n        throw new Error('A non-empty playlist URL is required');\n      }\n\n      Hls = externHls;\n      _this.withCredentials = withCredentials;\n      _this.tech_ = tech;\n      _this.hls_ = tech.hls;\n      _this.seekTo_ = seekTo;\n      _this.sourceType_ = sourceType;\n      _this.useCueTags_ = useCueTags;\n      _this.blacklistDuration = blacklistDuration;\n      _this.enableLowInitialPlaylist = enableLowInitialPlaylist;\n\n      if (_this.useCueTags_) {\n        _this.cueTagsTrack_ = _this.tech_.addTextTrack('metadata', 'ad-cues');\n        _this.cueTagsTrack_.inBandMetadataTrackDispatchType = '';\n      }\n\n      _this.requestOptions_ = {\n        withCredentials: _this.withCredentials,\n        timeout: null\n      };\n      _this.mediaTypes_ = createMediaTypes();\n      _this.mediaSource = new videojs$1.MediaSource(); // load the media source into the player\n\n      _this.mediaSource.addEventListener('sourceopen', _this.handleSourceOpen_.bind(_this));\n\n      _this.seekable_ = videojs$1.createTimeRanges();\n\n      _this.hasPlayed_ = function () {\n        return false;\n      };\n\n      _this.syncController_ = new SyncController(options);\n      _this.segmentMetadataTrack_ = tech.addRemoteTextTrack({\n        kind: 'metadata',\n        label: 'segment-metadata'\n      }, false).track;\n      _this.decrypter_ = new Decrypter$1();\n      _this.inbandTextTracks_ = {};\n      var segmentLoaderSettings = {\n        hls: _this.hls_,\n        mediaSource: _this.mediaSource,\n        currentTime: _this.tech_.currentTime.bind(_this.tech_),\n        seekable: function seekable$$1() {\n          return _this.seekable();\n        },\n        seeking: function seeking() {\n          return _this.tech_.seeking();\n        },\n        duration: function duration$$1() {\n          return _this.mediaSource.duration;\n        },\n        hasPlayed: function hasPlayed() {\n          return _this.hasPlayed_();\n        },\n        goalBufferLength: function goalBufferLength() {\n          return _this.goalBufferLength();\n        },\n        bandwidth: bandwidth,\n        syncController: _this.syncController_,\n        decrypter: _this.decrypter_,\n        sourceType: _this.sourceType_,\n        inbandTextTracks: _this.inbandTextTracks_\n      };\n      _this.masterPlaylistLoader_ = _this.sourceType_ === 'dash' ? new DashPlaylistLoader(url, _this.hls_, _this.withCredentials) : new PlaylistLoader(url, _this.hls_, _this.withCredentials);\n\n      _this.setupMasterPlaylistLoaderListeners_(); // setup segment loaders\n      // combined audio/video or just video when alternate audio track is selected\n\n\n      _this.mainSegmentLoader_ = new SegmentLoader(videojs$1.mergeOptions(segmentLoaderSettings, {\n        segmentMetadataTrack: _this.segmentMetadataTrack_,\n        loaderType: 'main'\n      }), options); // alternate audio track\n\n      _this.audioSegmentLoader_ = new SegmentLoader(videojs$1.mergeOptions(segmentLoaderSettings, {\n        loaderType: 'audio'\n      }), options);\n      _this.subtitleSegmentLoader_ = new VTTSegmentLoader(videojs$1.mergeOptions(segmentLoaderSettings, {\n        loaderType: 'vtt'\n      }), options);\n\n      _this.setupSegmentLoaderListeners_(); // Create SegmentLoader stat-getters\n\n\n      loaderStats.forEach(function (stat) {\n        _this[stat + '_'] = sumLoaderStat.bind(_this, stat);\n      });\n      _this.logger_ = logger('MPC');\n\n      _this.masterPlaylistLoader_.load();\n\n      return _this;\n    }\n    /**\n     * Register event handlers on the master playlist loader. A helper\n     * function for construction time.\n     *\n     * @private\n     */\n\n\n    createClass$1(MasterPlaylistController, [{\n      key: 'setupMasterPlaylistLoaderListeners_',\n      value: function setupMasterPlaylistLoaderListeners_() {\n        var _this2 = this;\n\n        this.masterPlaylistLoader_.on('loadedmetadata', function () {\n          var media = _this2.masterPlaylistLoader_.media();\n\n          var requestTimeout = _this2.masterPlaylistLoader_.targetDuration * 1.5 * 1000; // If we don't have any more available playlists, we don't want to\n          // timeout the request.\n\n          if (isLowestEnabledRendition(_this2.masterPlaylistLoader_.master, _this2.masterPlaylistLoader_.media())) {\n            _this2.requestOptions_.timeout = 0;\n          } else {\n            _this2.requestOptions_.timeout = requestTimeout;\n          } // if this isn't a live video and preload permits, start\n          // downloading segments\n\n\n          if (media.endList && _this2.tech_.preload() !== 'none') {\n            _this2.mainSegmentLoader_.playlist(media, _this2.requestOptions_);\n\n            _this2.mainSegmentLoader_.load();\n          }\n\n          setupMediaGroups({\n            sourceType: _this2.sourceType_,\n            segmentLoaders: {\n              AUDIO: _this2.audioSegmentLoader_,\n              SUBTITLES: _this2.subtitleSegmentLoader_,\n              main: _this2.mainSegmentLoader_\n            },\n            tech: _this2.tech_,\n            requestOptions: _this2.requestOptions_,\n            masterPlaylistLoader: _this2.masterPlaylistLoader_,\n            hls: _this2.hls_,\n            master: _this2.master(),\n            mediaTypes: _this2.mediaTypes_,\n            blacklistCurrentPlaylist: _this2.blacklistCurrentPlaylist.bind(_this2)\n          });\n\n          _this2.triggerPresenceUsage_(_this2.master(), media);\n\n          try {\n            _this2.setupSourceBuffers_();\n          } catch (e) {\n            videojs$1.log.warn('Failed to create SourceBuffers', e);\n            return _this2.mediaSource.endOfStream('decode');\n          }\n\n          _this2.setupFirstPlay();\n\n          _this2.trigger('selectedinitialmedia');\n        });\n        this.masterPlaylistLoader_.on('loadedplaylist', function () {\n          var updatedPlaylist = _this2.masterPlaylistLoader_.media();\n\n          if (!updatedPlaylist) {\n            // blacklist any variants that are not supported by the browser before selecting\n            // an initial media as the playlist selectors do not consider browser support\n            _this2.excludeUnsupportedVariants_();\n\n            var selectedMedia = void 0;\n\n            if (_this2.enableLowInitialPlaylist) {\n              selectedMedia = _this2.selectInitialPlaylist();\n            }\n\n            if (!selectedMedia) {\n              selectedMedia = _this2.selectPlaylist();\n            }\n\n            _this2.initialMedia_ = selectedMedia;\n\n            _this2.masterPlaylistLoader_.media(_this2.initialMedia_);\n\n            return;\n          }\n\n          if (_this2.useCueTags_) {\n            _this2.updateAdCues_(updatedPlaylist);\n          } // TODO: Create a new event on the PlaylistLoader that signals\n          // that the segments have changed in some way and use that to\n          // update the SegmentLoader instead of doing it twice here and\n          // on `mediachange`\n\n\n          _this2.mainSegmentLoader_.playlist(updatedPlaylist, _this2.requestOptions_);\n\n          _this2.updateDuration(); // If the player isn't paused, ensure that the segment loader is running,\n          // as it is possible that it was temporarily stopped while waiting for\n          // a playlist (e.g., in case the playlist errored and we re-requested it).\n\n\n          if (!_this2.tech_.paused()) {\n            _this2.mainSegmentLoader_.load();\n\n            if (_this2.audioSegmentLoader_) {\n              _this2.audioSegmentLoader_.load();\n            }\n          }\n\n          if (!updatedPlaylist.endList) {\n            var addSeekableRange = function addSeekableRange() {\n              var seekable$$1 = _this2.seekable();\n\n              if (seekable$$1.length !== 0) {\n                _this2.mediaSource.addSeekableRange_(seekable$$1.start(0), seekable$$1.end(0));\n              }\n            };\n\n            if (_this2.duration() !== Infinity) {\n              var onDurationchange = function onDurationchange() {\n                if (_this2.duration() === Infinity) {\n                  addSeekableRange();\n                } else {\n                  _this2.tech_.one('durationchange', onDurationchange);\n                }\n              };\n\n              _this2.tech_.one('durationchange', onDurationchange);\n            } else {\n              addSeekableRange();\n            }\n          }\n        });\n        this.masterPlaylistLoader_.on('error', function () {\n          _this2.blacklistCurrentPlaylist(_this2.masterPlaylistLoader_.error);\n        });\n        this.masterPlaylistLoader_.on('mediachanging', function () {\n          _this2.mainSegmentLoader_.abort();\n\n          _this2.mainSegmentLoader_.pause();\n        });\n        this.masterPlaylistLoader_.on('mediachange', function () {\n          var media = _this2.masterPlaylistLoader_.media();\n\n          var requestTimeout = _this2.masterPlaylistLoader_.targetDuration * 1.5 * 1000; // If we don't have any more available playlists, we don't want to\n          // timeout the request.\n\n          if (isLowestEnabledRendition(_this2.masterPlaylistLoader_.master, _this2.masterPlaylistLoader_.media())) {\n            _this2.requestOptions_.timeout = 0;\n          } else {\n            _this2.requestOptions_.timeout = requestTimeout;\n          } // TODO: Create a new event on the PlaylistLoader that signals\n          // that the segments have changed in some way and use that to\n          // update the SegmentLoader instead of doing it twice here and\n          // on `loadedplaylist`\n\n\n          _this2.mainSegmentLoader_.playlist(media, _this2.requestOptions_);\n\n          _this2.mainSegmentLoader_.load();\n\n          _this2.tech_.trigger({\n            type: 'mediachange',\n            bubbles: true\n          });\n        });\n        this.masterPlaylistLoader_.on('playlistunchanged', function () {\n          var updatedPlaylist = _this2.masterPlaylistLoader_.media();\n\n          var playlistOutdated = _this2.stuckAtPlaylistEnd_(updatedPlaylist);\n\n          if (playlistOutdated) {\n            // Playlist has stopped updating and we're stuck at its end. Try to\n            // blacklist it and switch to another playlist in the hope that that\n            // one is updating (and give the player a chance to re-adjust to the\n            // safe live point).\n            _this2.blacklistCurrentPlaylist({\n              message: 'Playlist no longer updating.'\n            }); // useful for monitoring QoS\n\n\n            _this2.tech_.trigger('playliststuck');\n          }\n        });\n        this.masterPlaylistLoader_.on('renditiondisabled', function () {\n          _this2.tech_.trigger({\n            type: 'usage',\n            name: 'hls-rendition-disabled'\n          });\n        });\n        this.masterPlaylistLoader_.on('renditionenabled', function () {\n          _this2.tech_.trigger({\n            type: 'usage',\n            name: 'hls-rendition-enabled'\n          });\n        });\n      }\n      /**\n       * A helper function for triggerring presence usage events once per source\n       *\n       * @private\n       */\n\n    }, {\n      key: 'triggerPresenceUsage_',\n      value: function triggerPresenceUsage_(master, media) {\n        var mediaGroups = master.mediaGroups || {};\n        var defaultDemuxed = true;\n        var audioGroupKeys = Object.keys(mediaGroups.AUDIO);\n\n        for (var mediaGroup in mediaGroups.AUDIO) {\n          for (var label in mediaGroups.AUDIO[mediaGroup]) {\n            var properties = mediaGroups.AUDIO[mediaGroup][label];\n\n            if (!properties.uri) {\n              defaultDemuxed = false;\n            }\n          }\n        }\n\n        if (defaultDemuxed) {\n          this.tech_.trigger({\n            type: 'usage',\n            name: 'hls-demuxed'\n          });\n        }\n\n        if (Object.keys(mediaGroups.SUBTITLES).length) {\n          this.tech_.trigger({\n            type: 'usage',\n            name: 'hls-webvtt'\n          });\n        }\n\n        if (Hls.Playlist.isAes(media)) {\n          this.tech_.trigger({\n            type: 'usage',\n            name: 'hls-aes'\n          });\n        }\n\n        if (Hls.Playlist.isFmp4(media)) {\n          this.tech_.trigger({\n            type: 'usage',\n            name: 'hls-fmp4'\n          });\n        }\n\n        if (audioGroupKeys.length && Object.keys(mediaGroups.AUDIO[audioGroupKeys[0]]).length > 1) {\n          this.tech_.trigger({\n            type: 'usage',\n            name: 'hls-alternate-audio'\n          });\n        }\n\n        if (this.useCueTags_) {\n          this.tech_.trigger({\n            type: 'usage',\n            name: 'hls-playlist-cue-tags'\n          });\n        }\n      }\n      /**\n       * Register event handlers on the segment loaders. A helper function\n       * for construction time.\n       *\n       * @private\n       */\n\n    }, {\n      key: 'setupSegmentLoaderListeners_',\n      value: function setupSegmentLoaderListeners_() {\n        var _this3 = this;\n\n        this.mainSegmentLoader_.on('bandwidthupdate', function () {\n          var nextPlaylist = _this3.selectPlaylist();\n\n          var currentPlaylist = _this3.masterPlaylistLoader_.media();\n\n          var buffered = _this3.tech_.buffered();\n\n          var forwardBuffer = buffered.length ? buffered.end(buffered.length - 1) - _this3.tech_.currentTime() : 0;\n\n          var bufferLowWaterLine = _this3.bufferLowWaterLine(); // If the playlist is live, then we want to not take low water line into account.\n          // This is because in LIVE, the player plays 3 segments from the end of the\n          // playlist, and if `BUFFER_LOW_WATER_LINE` is greater than the duration availble\n          // in those segments, a viewer will never experience a rendition upswitch.\n\n\n          if (!currentPlaylist.endList || // For the same reason as LIVE, we ignore the low water line when the VOD\n          // duration is below the max potential low water line\n          _this3.duration() < Config.MAX_BUFFER_LOW_WATER_LINE || // we want to switch down to lower resolutions quickly to continue playback, but\n          nextPlaylist.attributes.BANDWIDTH < currentPlaylist.attributes.BANDWIDTH || // ensure we have some buffer before we switch up to prevent us running out of\n          // buffer while loading a higher rendition.\n          forwardBuffer >= bufferLowWaterLine) {\n            _this3.masterPlaylistLoader_.media(nextPlaylist);\n          }\n\n          _this3.tech_.trigger('bandwidthupdate');\n        });\n        this.mainSegmentLoader_.on('progress', function () {\n          _this3.trigger('progress');\n        });\n        this.mainSegmentLoader_.on('error', function () {\n          _this3.blacklistCurrentPlaylist(_this3.mainSegmentLoader_.error());\n        });\n        this.mainSegmentLoader_.on('syncinfoupdate', function () {\n          _this3.onSyncInfoUpdate_();\n        });\n        this.mainSegmentLoader_.on('timestampoffset', function () {\n          _this3.tech_.trigger({\n            type: 'usage',\n            name: 'hls-timestamp-offset'\n          });\n        });\n        this.audioSegmentLoader_.on('syncinfoupdate', function () {\n          _this3.onSyncInfoUpdate_();\n        });\n        this.mainSegmentLoader_.on('ended', function () {\n          _this3.onEndOfStream();\n        });\n        this.mainSegmentLoader_.on('earlyabort', function () {\n          _this3.blacklistCurrentPlaylist({\n            message: 'Aborted early because there isn\\'t enough bandwidth to complete the ' + 'request without rebuffering.'\n          }, ABORT_EARLY_BLACKLIST_SECONDS);\n        });\n        this.mainSegmentLoader_.on('reseteverything', function () {\n          // If playing an MTS stream, a videojs.MediaSource is listening for\n          // hls-reset to reset caption parsing state in the transmuxer\n          _this3.tech_.trigger('hls-reset');\n        });\n        this.mainSegmentLoader_.on('segmenttimemapping', function (event) {\n          // If playing an MTS stream in html, a videojs.MediaSource is listening for\n          // hls-segment-time-mapping update its internal mapping of stream to display time\n          _this3.tech_.trigger({\n            type: 'hls-segment-time-mapping',\n            mapping: event.mapping\n          });\n        });\n        this.audioSegmentLoader_.on('ended', function () {\n          _this3.onEndOfStream();\n        });\n      }\n    }, {\n      key: 'mediaSecondsLoaded_',\n      value: function mediaSecondsLoaded_() {\n        return Math.max(this.audioSegmentLoader_.mediaSecondsLoaded + this.mainSegmentLoader_.mediaSecondsLoaded);\n      }\n      /**\n       * Call load on our SegmentLoaders\n       */\n\n    }, {\n      key: 'load',\n      value: function load() {\n        this.mainSegmentLoader_.load();\n\n        if (this.mediaTypes_.AUDIO.activePlaylistLoader) {\n          this.audioSegmentLoader_.load();\n        }\n\n        if (this.mediaTypes_.SUBTITLES.activePlaylistLoader) {\n          this.subtitleSegmentLoader_.load();\n        }\n      }\n      /**\n       * Re-tune playback quality level for the current player\n       * conditions without performing destructive actions, like\n       * removing already buffered content\n       *\n       * @private\n       */\n\n    }, {\n      key: 'smoothQualityChange_',\n      value: function smoothQualityChange_() {\n        var media = this.selectPlaylist();\n\n        if (media !== this.masterPlaylistLoader_.media()) {\n          this.masterPlaylistLoader_.media(media);\n          this.mainSegmentLoader_.resetLoader(); // don't need to reset audio as it is reset when media changes\n        }\n      }\n      /**\n       * Re-tune playback quality level for the current player\n       * conditions. This method will perform destructive actions like removing\n       * already buffered content in order to readjust the currently active\n       * playlist quickly. This is good for manual quality changes\n       *\n       * @private\n       */\n\n    }, {\n      key: 'fastQualityChange_',\n      value: function fastQualityChange_() {\n        var _this4 = this;\n\n        var media = this.selectPlaylist();\n\n        if (media === this.masterPlaylistLoader_.media()) {\n          return;\n        }\n\n        this.masterPlaylistLoader_.media(media); // Delete all buffered data to allow an immediate quality switch, then seek to give\n        // the browser a kick to remove any cached frames from the previous rendtion (.04 seconds\n        // ahead is roughly the minimum that will accomplish this across a variety of content\n        // in IE and Edge, but seeking in place is sufficient on all other browsers)\n        // Edge/IE bug: https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/14600375/\n        // Chrome bug: https://bugs.chromium.org/p/chromium/issues/detail?id=651904\n\n        this.mainSegmentLoader_.resetEverything(function () {\n          // Since this is not a typical seek, we avoid the seekTo method which can cause segments\n          // from the previously enabled rendition to load before the new playlist has finished loading\n          if (videojs$1.browser.IE_VERSION || videojs$1.browser.IS_EDGE) {\n            _this4.tech_.setCurrentTime(_this4.tech_.currentTime() + 0.04);\n          } else {\n            _this4.tech_.setCurrentTime(_this4.tech_.currentTime());\n          }\n        }); // don't need to reset audio as it is reset when media changes\n      }\n      /**\n       * Begin playback.\n       */\n\n    }, {\n      key: 'play',\n      value: function play() {\n        if (this.setupFirstPlay()) {\n          return;\n        }\n\n        if (this.tech_.ended()) {\n          this.seekTo_(0);\n        }\n\n        if (this.hasPlayed_()) {\n          this.load();\n        }\n\n        var seekable$$1 = this.tech_.seekable(); // if the viewer has paused and we fell out of the live window,\n        // seek forward to the live point\n\n        if (this.tech_.duration() === Infinity) {\n          if (this.tech_.currentTime() < seekable$$1.start(0)) {\n            return this.seekTo_(seekable$$1.end(seekable$$1.length - 1));\n          }\n        }\n      }\n      /**\n       * Seek to the latest media position if this is a live video and the\n       * player and video are loaded and initialized.\n       */\n\n    }, {\n      key: 'setupFirstPlay',\n      value: function setupFirstPlay() {\n        var _this5 = this;\n\n        var media = this.masterPlaylistLoader_.media(); // Check that everything is ready to begin buffering for the first call to play\n        //  If 1) there is no active media\n        //     2) the player is paused\n        //     3) the first play has already been setup\n        // then exit early\n\n        if (!media || this.tech_.paused() || this.hasPlayed_()) {\n          return false;\n        } // when the video is a live stream\n\n\n        if (!media.endList) {\n          var seekable$$1 = this.seekable();\n\n          if (!seekable$$1.length) {\n            // without a seekable range, the player cannot seek to begin buffering at the live\n            // point\n            return false;\n          }\n\n          if (videojs$1.browser.IE_VERSION && this.tech_.readyState() === 0) {\n            // IE11 throws an InvalidStateError if you try to set currentTime while the\n            // readyState is 0, so it must be delayed until the tech fires loadedmetadata.\n            this.tech_.one('loadedmetadata', function () {\n              _this5.trigger('firstplay');\n\n              _this5.seekTo_(seekable$$1.end(0));\n\n              _this5.hasPlayed_ = function () {\n                return true;\n              };\n            });\n            return false;\n          } // trigger firstplay to inform the source handler to ignore the next seek event\n\n\n          this.trigger('firstplay'); // seek to the live point\n\n          this.seekTo_(seekable$$1.end(0));\n        }\n\n        this.hasPlayed_ = function () {\n          return true;\n        }; // we can begin loading now that everything is ready\n\n\n        this.load();\n        return true;\n      }\n      /**\n       * handle the sourceopen event on the MediaSource\n       *\n       * @private\n       */\n\n    }, {\n      key: 'handleSourceOpen_',\n      value: function handleSourceOpen_() {\n        // Only attempt to create the source buffer if none already exist.\n        // handleSourceOpen is also called when we are \"re-opening\" a source buffer\n        // after `endOfStream` has been called (in response to a seek for instance)\n        try {\n          this.setupSourceBuffers_();\n        } catch (e) {\n          videojs$1.log.warn('Failed to create Source Buffers', e);\n          return this.mediaSource.endOfStream('decode');\n        } // if autoplay is enabled, begin playback. This is duplicative of\n        // code in video.js but is required because play() must be invoked\n        // *after* the media source has opened.\n\n\n        if (this.tech_.autoplay()) {\n          var playPromise = this.tech_.play(); // Catch/silence error when a pause interrupts a play request\n          // on browsers which return a promise\n\n          if (typeof playPromise !== 'undefined' && typeof playPromise.then === 'function') {\n            playPromise.then(null, function (e) {});\n          }\n        }\n\n        this.trigger('sourceopen');\n      }\n      /**\n       * Calls endOfStream on the media source when all active stream types have called\n       * endOfStream\n       *\n       * @param {string} streamType\n       *        Stream type of the segment loader that called endOfStream\n       * @private\n       */\n\n    }, {\n      key: 'onEndOfStream',\n      value: function onEndOfStream() {\n        var isEndOfStream = this.mainSegmentLoader_.ended_;\n\n        if (this.mediaTypes_.AUDIO.activePlaylistLoader) {\n          // if the audio playlist loader exists, then alternate audio is active\n          if (!this.mainSegmentLoader_.startingMedia_ || this.mainSegmentLoader_.startingMedia_.containsVideo) {\n            // if we do not know if the main segment loader contains video yet or if we\n            // definitively know the main segment loader contains video, then we need to wait\n            // for both main and audio segment loaders to call endOfStream\n            isEndOfStream = isEndOfStream && this.audioSegmentLoader_.ended_;\n          } else {\n            // otherwise just rely on the audio loader\n            isEndOfStream = this.audioSegmentLoader_.ended_;\n          }\n        }\n\n        if (isEndOfStream) {\n          this.mediaSource.endOfStream();\n        }\n      }\n      /**\n       * Check if a playlist has stopped being updated\n       * @param {Object} playlist the media playlist object\n       * @return {boolean} whether the playlist has stopped being updated or not\n       */\n\n    }, {\n      key: 'stuckAtPlaylistEnd_',\n      value: function stuckAtPlaylistEnd_(playlist) {\n        var seekable$$1 = this.seekable();\n\n        if (!seekable$$1.length) {\n          // playlist doesn't have enough information to determine whether we are stuck\n          return false;\n        }\n\n        var expired = this.syncController_.getExpiredTime(playlist, this.mediaSource.duration);\n\n        if (expired === null) {\n          return false;\n        } // does not use the safe live end to calculate playlist end, since we\n        // don't want to say we are stuck while there is still content\n\n\n        var absolutePlaylistEnd = Hls.Playlist.playlistEnd(playlist, expired);\n        var currentTime = this.tech_.currentTime();\n        var buffered = this.tech_.buffered();\n\n        if (!buffered.length) {\n          // return true if the playhead reached the absolute end of the playlist\n          return absolutePlaylistEnd - currentTime <= SAFE_TIME_DELTA;\n        }\n\n        var bufferedEnd = buffered.end(buffered.length - 1); // return true if there is too little buffer left and buffer has reached absolute\n        // end of playlist\n\n        return bufferedEnd - currentTime <= SAFE_TIME_DELTA && absolutePlaylistEnd - bufferedEnd <= SAFE_TIME_DELTA;\n      }\n      /**\n       * Blacklists a playlist when an error occurs for a set amount of time\n       * making it unavailable for selection by the rendition selection algorithm\n       * and then forces a new playlist (rendition) selection.\n       *\n       * @param {Object=} error an optional error that may include the playlist\n       * to blacklist\n       * @param {Number=} blacklistDuration an optional number of seconds to blacklist the\n       * playlist\n       */\n\n    }, {\n      key: 'blacklistCurrentPlaylist',\n      value: function blacklistCurrentPlaylist() {\n        var error = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n        var blacklistDuration = arguments[1];\n        var currentPlaylist = void 0;\n        var nextPlaylist = void 0; // If the `error` was generated by the playlist loader, it will contain\n        // the playlist we were trying to load (but failed) and that should be\n        // blacklisted instead of the currently selected playlist which is likely\n        // out-of-date in this scenario\n\n        currentPlaylist = error.playlist || this.masterPlaylistLoader_.media();\n        blacklistDuration = blacklistDuration || error.blacklistDuration || this.blacklistDuration; // If there is no current playlist, then an error occurred while we were\n        // trying to load the master OR while we were disposing of the tech\n\n        if (!currentPlaylist) {\n          this.error = error;\n\n          try {\n            return this.mediaSource.endOfStream('network');\n          } catch (e) {\n            return this.trigger('error');\n          }\n        }\n\n        var isFinalRendition = this.masterPlaylistLoader_.master.playlists.filter(isEnabled).length === 1;\n\n        if (isFinalRendition) {\n          // Never blacklisting this playlist because it's final rendition\n          videojs$1.log.warn('Problem encountered with the current ' + 'HLS playlist. Trying again since it is the final playlist.');\n          this.tech_.trigger('retryplaylist');\n          return this.masterPlaylistLoader_.load(isFinalRendition);\n        } // Blacklist this playlist\n\n\n        currentPlaylist.excludeUntil = Date.now() + blacklistDuration * 1000;\n        this.tech_.trigger('blacklistplaylist');\n        this.tech_.trigger({\n          type: 'usage',\n          name: 'hls-rendition-blacklisted'\n        }); // Select a new playlist\n\n        nextPlaylist = this.selectPlaylist();\n        videojs$1.log.warn('Problem encountered with the current HLS playlist.' + (error.message ? ' ' + error.message : '') + ' Switching to another playlist.');\n        return this.masterPlaylistLoader_.media(nextPlaylist);\n      }\n      /**\n       * Pause all segment loaders\n       */\n\n    }, {\n      key: 'pauseLoading',\n      value: function pauseLoading() {\n        this.mainSegmentLoader_.pause();\n\n        if (this.mediaTypes_.AUDIO.activePlaylistLoader) {\n          this.audioSegmentLoader_.pause();\n        }\n\n        if (this.mediaTypes_.SUBTITLES.activePlaylistLoader) {\n          this.subtitleSegmentLoader_.pause();\n        }\n      }\n      /**\n       * set the current time on all segment loaders\n       *\n       * @param {TimeRange} currentTime the current time to set\n       * @return {TimeRange} the current time\n       */\n\n    }, {\n      key: 'setCurrentTime',\n      value: function setCurrentTime(currentTime) {\n        var buffered = findRange(this.tech_.buffered(), currentTime);\n\n        if (!(this.masterPlaylistLoader_ && this.masterPlaylistLoader_.media())) {\n          // return immediately if the metadata is not ready yet\n          return 0;\n        } // it's clearly an edge-case but don't thrown an error if asked to\n        // seek within an empty playlist\n\n\n        if (!this.masterPlaylistLoader_.media().segments) {\n          return 0;\n        } // In flash playback, the segment loaders should be reset on every seek, even\n        // in buffer seeks. If the seek location is already buffered, continue buffering as\n        // usual\n        // TODO: redo this comment\n\n\n        if (buffered && buffered.length) {\n          return currentTime;\n        } // cancel outstanding requests so we begin buffering at the new\n        // location\n\n\n        this.mainSegmentLoader_.resetEverything();\n        this.mainSegmentLoader_.abort();\n\n        if (this.mediaTypes_.AUDIO.activePlaylistLoader) {\n          this.audioSegmentLoader_.resetEverything();\n          this.audioSegmentLoader_.abort();\n        }\n\n        if (this.mediaTypes_.SUBTITLES.activePlaylistLoader) {\n          this.subtitleSegmentLoader_.resetEverything();\n          this.subtitleSegmentLoader_.abort();\n        } // start segment loader loading in case they are paused\n\n\n        this.load();\n      }\n      /**\n       * get the current duration\n       *\n       * @return {TimeRange} the duration\n       */\n\n    }, {\n      key: 'duration',\n      value: function duration$$1() {\n        if (!this.masterPlaylistLoader_) {\n          return 0;\n        }\n\n        if (this.mediaSource) {\n          return this.mediaSource.duration;\n        }\n\n        return Hls.Playlist.duration(this.masterPlaylistLoader_.media());\n      }\n      /**\n       * check the seekable range\n       *\n       * @return {TimeRange} the seekable range\n       */\n\n    }, {\n      key: 'seekable',\n      value: function seekable$$1() {\n        return this.seekable_;\n      }\n    }, {\n      key: 'onSyncInfoUpdate_',\n      value: function onSyncInfoUpdate_() {\n        var mainSeekable = void 0;\n        var audioSeekable = void 0;\n\n        if (!this.masterPlaylistLoader_) {\n          return;\n        }\n\n        var media = this.masterPlaylistLoader_.media();\n\n        if (!media) {\n          return;\n        }\n\n        var expired = this.syncController_.getExpiredTime(media, this.mediaSource.duration);\n\n        if (expired === null) {\n          // not enough information to update seekable\n          return;\n        }\n\n        mainSeekable = Hls.Playlist.seekable(media, expired);\n\n        if (mainSeekable.length === 0) {\n          return;\n        }\n\n        if (this.mediaTypes_.AUDIO.activePlaylistLoader) {\n          media = this.mediaTypes_.AUDIO.activePlaylistLoader.media();\n          expired = this.syncController_.getExpiredTime(media, this.mediaSource.duration);\n\n          if (expired === null) {\n            return;\n          }\n\n          audioSeekable = Hls.Playlist.seekable(media, expired);\n\n          if (audioSeekable.length === 0) {\n            return;\n          }\n        }\n\n        if (!audioSeekable) {\n          // seekable has been calculated based on buffering video data so it\n          // can be returned directly\n          this.seekable_ = mainSeekable;\n        } else if (audioSeekable.start(0) > mainSeekable.end(0) || mainSeekable.start(0) > audioSeekable.end(0)) {\n          // seekables are pretty far off, rely on main\n          this.seekable_ = mainSeekable;\n        } else {\n          this.seekable_ = videojs$1.createTimeRanges([[audioSeekable.start(0) > mainSeekable.start(0) ? audioSeekable.start(0) : mainSeekable.start(0), audioSeekable.end(0) < mainSeekable.end(0) ? audioSeekable.end(0) : mainSeekable.end(0)]]);\n        }\n\n        this.logger_('seekable updated [' + printableRange(this.seekable_) + ']');\n        this.tech_.trigger('seekablechanged');\n      }\n      /**\n       * Update the player duration\n       */\n\n    }, {\n      key: 'updateDuration',\n      value: function updateDuration() {\n        var _this6 = this;\n\n        var oldDuration = this.mediaSource.duration;\n        var newDuration = Hls.Playlist.duration(this.masterPlaylistLoader_.media());\n        var buffered = this.tech_.buffered();\n\n        var setDuration = function setDuration() {\n          _this6.mediaSource.duration = newDuration;\n\n          _this6.tech_.trigger('durationchange');\n\n          _this6.mediaSource.removeEventListener('sourceopen', setDuration);\n        };\n\n        if (buffered.length > 0) {\n          newDuration = Math.max(newDuration, buffered.end(buffered.length - 1));\n        } // if the duration has changed, invalidate the cached value\n\n\n        if (oldDuration !== newDuration) {\n          // update the duration\n          if (this.mediaSource.readyState !== 'open') {\n            this.mediaSource.addEventListener('sourceopen', setDuration);\n          } else {\n            setDuration();\n          }\n        }\n      }\n      /**\n       * dispose of the MasterPlaylistController and everything\n       * that it controls\n       */\n\n    }, {\n      key: 'dispose',\n      value: function dispose() {\n        var _this7 = this;\n\n        this.decrypter_.terminate();\n        this.masterPlaylistLoader_.dispose();\n        this.mainSegmentLoader_.dispose();\n        ['AUDIO', 'SUBTITLES'].forEach(function (type) {\n          var groups = _this7.mediaTypes_[type].groups;\n\n          for (var id in groups) {\n            groups[id].forEach(function (group) {\n              if (group.playlistLoader) {\n                group.playlistLoader.dispose();\n              }\n            });\n          }\n        });\n        this.audioSegmentLoader_.dispose();\n        this.subtitleSegmentLoader_.dispose();\n      }\n      /**\n       * return the master playlist object if we have one\n       *\n       * @return {Object} the master playlist object that we parsed\n       */\n\n    }, {\n      key: 'master',\n      value: function master() {\n        return this.masterPlaylistLoader_.master;\n      }\n      /**\n       * return the currently selected playlist\n       *\n       * @return {Object} the currently selected playlist object that we parsed\n       */\n\n    }, {\n      key: 'media',\n      value: function media() {\n        // playlist loader will not return media if it has not been fully loaded\n        return this.masterPlaylistLoader_.media() || this.initialMedia_;\n      }\n      /**\n       * setup our internal source buffers on our segment Loaders\n       *\n       * @private\n       */\n\n    }, {\n      key: 'setupSourceBuffers_',\n      value: function setupSourceBuffers_() {\n        var media = this.masterPlaylistLoader_.media();\n        var mimeTypes = void 0; // wait until a media playlist is available and the Media Source is\n        // attached\n\n        if (!media || this.mediaSource.readyState !== 'open') {\n          return;\n        }\n\n        mimeTypes = mimeTypesForPlaylist(this.masterPlaylistLoader_.master, media);\n\n        if (mimeTypes.length < 1) {\n          this.error = 'No compatible SourceBuffer configuration for the variant stream:' + media.resolvedUri;\n          return this.mediaSource.endOfStream('decode');\n        }\n\n        this.configureLoaderMimeTypes_(mimeTypes); // exclude any incompatible variant streams from future playlist\n        // selection\n\n        this.excludeIncompatibleVariants_(media);\n      }\n    }, {\n      key: 'configureLoaderMimeTypes_',\n      value: function configureLoaderMimeTypes_(mimeTypes) {\n        // If the content is demuxed, we can't start appending segments to a source buffer\n        // until both source buffers are set up, or else the browser may not let us add the\n        // second source buffer (it will assume we are playing either audio only or video\n        // only).\n        var sourceBufferEmitter = // If there is more than one mime type\n        mimeTypes.length > 1 && // and the first mime type does not have muxed video and audio\n        mimeTypes[0].indexOf(',') === -1 && // and the two mime types are different (they can be the same in the case of audio\n        // only with alternate audio)\n        mimeTypes[0] !== mimeTypes[1] ? // then we want to wait on the second source buffer\n        new videojs$1.EventTarget() : // otherwise there is no need to wait as the content is either audio only,\n        // video only, or muxed content.\n        null;\n        this.mainSegmentLoader_.mimeType(mimeTypes[0], sourceBufferEmitter);\n\n        if (mimeTypes[1]) {\n          this.audioSegmentLoader_.mimeType(mimeTypes[1], sourceBufferEmitter);\n        }\n      }\n      /**\n       * Blacklists playlists with codecs that are unsupported by the browser.\n       */\n\n    }, {\n      key: 'excludeUnsupportedVariants_',\n      value: function excludeUnsupportedVariants_() {\n        this.master().playlists.forEach(function (variant) {\n          if (variant.attributes.CODECS && window$1.MediaSource && window$1.MediaSource.isTypeSupported && !window$1.MediaSource.isTypeSupported('video/mp4; codecs=\"' + mapLegacyAvcCodecs(variant.attributes.CODECS) + '\"')) {\n            variant.excludeUntil = Infinity;\n          }\n        });\n      }\n      /**\n       * Blacklist playlists that are known to be codec or\n       * stream-incompatible with the SourceBuffer configuration. For\n       * instance, Media Source Extensions would cause the video element to\n       * stall waiting for video data if you switched from a variant with\n       * video and audio to an audio-only one.\n       *\n       * @param {Object} media a media playlist compatible with the current\n       * set of SourceBuffers. Variants in the current master playlist that\n       * do not appear to have compatible codec or stream configurations\n       * will be excluded from the default playlist selection algorithm\n       * indefinitely.\n       * @private\n       */\n\n    }, {\n      key: 'excludeIncompatibleVariants_',\n      value: function excludeIncompatibleVariants_(media) {\n        var codecCount = 2;\n        var videoCodec = null;\n        var codecs = void 0;\n\n        if (media.attributes.CODECS) {\n          codecs = parseCodecs(media.attributes.CODECS);\n          videoCodec = codecs.videoCodec;\n          codecCount = codecs.codecCount;\n        }\n\n        this.master().playlists.forEach(function (variant) {\n          var variantCodecs = {\n            codecCount: 2,\n            videoCodec: null\n          };\n\n          if (variant.attributes.CODECS) {\n            variantCodecs = parseCodecs(variant.attributes.CODECS);\n          } // if the streams differ in the presence or absence of audio or\n          // video, they are incompatible\n\n\n          if (variantCodecs.codecCount !== codecCount) {\n            variant.excludeUntil = Infinity;\n          } // if h.264 is specified on the current playlist, some flavor of\n          // it must be specified on all compatible variants\n\n\n          if (variantCodecs.videoCodec !== videoCodec) {\n            variant.excludeUntil = Infinity;\n          }\n        });\n      }\n    }, {\n      key: 'updateAdCues_',\n      value: function updateAdCues_(media) {\n        var offset = 0;\n        var seekable$$1 = this.seekable();\n\n        if (seekable$$1.length) {\n          offset = seekable$$1.start(0);\n        }\n\n        updateAdCues(media, this.cueTagsTrack_, offset);\n      }\n      /**\n       * Calculates the desired forward buffer length based on current time\n       *\n       * @return {Number} Desired forward buffer length in seconds\n       */\n\n    }, {\n      key: 'goalBufferLength',\n      value: function goalBufferLength() {\n        var currentTime = this.tech_.currentTime();\n        var initial = Config.GOAL_BUFFER_LENGTH;\n        var rate = Config.GOAL_BUFFER_LENGTH_RATE;\n        var max = Math.max(initial, Config.MAX_GOAL_BUFFER_LENGTH);\n        return Math.min(initial + currentTime * rate, max);\n      }\n      /**\n       * Calculates the desired buffer low water line based on current time\n       *\n       * @return {Number} Desired buffer low water line in seconds\n       */\n\n    }, {\n      key: 'bufferLowWaterLine',\n      value: function bufferLowWaterLine() {\n        var currentTime = this.tech_.currentTime();\n        var initial = Config.BUFFER_LOW_WATER_LINE;\n        var rate = Config.BUFFER_LOW_WATER_LINE_RATE;\n        var max = Math.max(initial, Config.MAX_BUFFER_LOW_WATER_LINE);\n        return Math.min(initial + currentTime * rate, max);\n      }\n    }]);\n    return MasterPlaylistController;\n  }(videojs$1.EventTarget);\n  /**\n   * Returns a function that acts as the Enable/disable playlist function.\n   *\n   * @param {PlaylistLoader} loader - The master playlist loader\n   * @param {String} playlistUri - uri of the playlist\n   * @param {Function} changePlaylistFn - A function to be called after a\n   * playlist's enabled-state has been changed. Will NOT be called if a\n   * playlist's enabled-state is unchanged\n   * @param {Boolean=} enable - Value to set the playlist enabled-state to\n   * or if undefined returns the current enabled-state for the playlist\n   * @return {Function} Function for setting/getting enabled\n   */\n\n\n  var enableFunction = function enableFunction(loader, playlistUri, changePlaylistFn) {\n    return function (enable) {\n      var playlist = loader.master.playlists[playlistUri];\n      var incompatible = isIncompatible(playlist);\n      var currentlyEnabled = isEnabled(playlist);\n\n      if (typeof enable === 'undefined') {\n        return currentlyEnabled;\n      }\n\n      if (enable) {\n        delete playlist.disabled;\n      } else {\n        playlist.disabled = true;\n      }\n\n      if (enable !== currentlyEnabled && !incompatible) {\n        // Ensure the outside world knows about our changes\n        changePlaylistFn();\n\n        if (enable) {\n          loader.trigger('renditionenabled');\n        } else {\n          loader.trigger('renditiondisabled');\n        }\n      }\n\n      return enable;\n    };\n  };\n  /**\n   * The representation object encapsulates the publicly visible information\n   * in a media playlist along with a setter/getter-type function (enabled)\n   * for changing the enabled-state of a particular playlist entry\n   *\n   * @class Representation\n   */\n\n\n  var Representation = function Representation(hlsHandler, playlist, id) {\n    classCallCheck$1(this, Representation);\n    var mpc = hlsHandler.masterPlaylistController_,\n        smoothQualityChange = hlsHandler.options_.smoothQualityChange; // Get a reference to a bound version of the quality change function\n\n    var changeType = smoothQualityChange ? 'smooth' : 'fast';\n    var qualityChangeFunction = mpc[changeType + 'QualityChange_'].bind(mpc); // some playlist attributes are optional\n\n    if (playlist.attributes.RESOLUTION) {\n      var resolution = playlist.attributes.RESOLUTION;\n      this.width = resolution.width;\n      this.height = resolution.height;\n    }\n\n    this.bandwidth = playlist.attributes.BANDWIDTH; // The id is simply the ordinality of the media playlist\n    // within the master playlist\n\n    this.id = id; // Partially-apply the enableFunction to create a playlist-\n    // specific variant\n\n    this.enabled = enableFunction(hlsHandler.playlists, playlist.uri, qualityChangeFunction);\n  };\n  /**\n   * A mixin function that adds the `representations` api to an instance\n   * of the HlsHandler class\n   * @param {HlsHandler} hlsHandler - An instance of HlsHandler to add the\n   * representation API into\n   */\n\n\n  var renditionSelectionMixin = function renditionSelectionMixin(hlsHandler) {\n    var playlists = hlsHandler.playlists; // Add a single API-specific function to the HlsHandler instance\n\n    hlsHandler.representations = function () {\n      return playlists.master.playlists.filter(function (media) {\n        return !isIncompatible(media);\n      }).map(function (e, i) {\n        return new Representation(hlsHandler, e, e.uri);\n      });\n    };\n  };\n  /**\n   * @file playback-watcher.js\n   *\n   * Playback starts, and now my watch begins. It shall not end until my death. I shall\n   * take no wait, hold no uncleared timeouts, father no bad seeks. I shall wear no crowns\n   * and win no glory. I shall live and die at my post. I am the corrector of the underflow.\n   * I am the watcher of gaps. I am the shield that guards the realms of seekable. I pledge\n   * my life and honor to the Playback Watch, for this Player and all the Players to come.\n   */\n  // Set of events that reset the playback-watcher time check logic and clear the timeout\n\n\n  var timerCancelEvents = ['seeking', 'seeked', 'pause', 'playing', 'error'];\n  /**\n   * @class PlaybackWatcher\n   */\n\n  var PlaybackWatcher = function () {\n    /**\n     * Represents an PlaybackWatcher object.\n     * @constructor\n     * @param {object} options an object that includes the tech and settings\n     */\n    function PlaybackWatcher(options) {\n      var _this = this;\n\n      classCallCheck$1(this, PlaybackWatcher);\n      this.tech_ = options.tech;\n      this.seekable = options.seekable;\n      this.seekTo = options.seekTo;\n      this.allowSeeksWithinUnsafeLiveWindow = options.allowSeeksWithinUnsafeLiveWindow;\n      this.media = options.media;\n      this.consecutiveUpdates = 0;\n      this.lastRecordedTime = null;\n      this.timer_ = null;\n      this.checkCurrentTimeTimeout_ = null;\n      this.logger_ = logger('PlaybackWatcher');\n      this.logger_('initialize');\n\n      var canPlayHandler = function canPlayHandler() {\n        return _this.monitorCurrentTime_();\n      };\n\n      var waitingHandler = function waitingHandler() {\n        return _this.techWaiting_();\n      };\n\n      var cancelTimerHandler = function cancelTimerHandler() {\n        return _this.cancelTimer_();\n      };\n\n      var fixesBadSeeksHandler = function fixesBadSeeksHandler() {\n        return _this.fixesBadSeeks_();\n      };\n\n      this.tech_.on('seekablechanged', fixesBadSeeksHandler);\n      this.tech_.on('waiting', waitingHandler);\n      this.tech_.on(timerCancelEvents, cancelTimerHandler);\n      this.tech_.on('canplay', canPlayHandler); // Define the dispose function to clean up our events\n\n      this.dispose = function () {\n        _this.logger_('dispose');\n\n        _this.tech_.off('seekablechanged', fixesBadSeeksHandler);\n\n        _this.tech_.off('waiting', waitingHandler);\n\n        _this.tech_.off(timerCancelEvents, cancelTimerHandler);\n\n        _this.tech_.off('canplay', canPlayHandler);\n\n        if (_this.checkCurrentTimeTimeout_) {\n          window$1.clearTimeout(_this.checkCurrentTimeTimeout_);\n        }\n\n        _this.cancelTimer_();\n      };\n    }\n    /**\n     * Periodically check current time to see if playback stopped\n     *\n     * @private\n     */\n\n\n    createClass$1(PlaybackWatcher, [{\n      key: 'monitorCurrentTime_',\n      value: function monitorCurrentTime_() {\n        this.checkCurrentTime_();\n\n        if (this.checkCurrentTimeTimeout_) {\n          window$1.clearTimeout(this.checkCurrentTimeTimeout_);\n        } // 42 = 24 fps // 250 is what Webkit uses // FF uses 15\n\n\n        this.checkCurrentTimeTimeout_ = window$1.setTimeout(this.monitorCurrentTime_.bind(this), 250);\n      }\n      /**\n       * The purpose of this function is to emulate the \"waiting\" event on\n       * browsers that do not emit it when they are waiting for more\n       * data to continue playback\n       *\n       * @private\n       */\n\n    }, {\n      key: 'checkCurrentTime_',\n      value: function checkCurrentTime_() {\n        if (this.tech_.seeking() && this.fixesBadSeeks_()) {\n          this.consecutiveUpdates = 0;\n          this.lastRecordedTime = this.tech_.currentTime();\n          return;\n        }\n\n        if (this.tech_.paused() || this.tech_.seeking()) {\n          return;\n        }\n\n        var currentTime = this.tech_.currentTime();\n        var buffered = this.tech_.buffered();\n\n        if (this.lastRecordedTime === currentTime && (!buffered.length || currentTime + SAFE_TIME_DELTA >= buffered.end(buffered.length - 1))) {\n          // If current time is at the end of the final buffered region, then any playback\n          // stall is most likely caused by buffering in a low bandwidth environment. The tech\n          // should fire a `waiting` event in this scenario, but due to browser and tech\n          // inconsistencies. Calling `techWaiting_` here allows us to simulate\n          // responding to a native `waiting` event when the tech fails to emit one.\n          return this.techWaiting_();\n        }\n\n        if (this.consecutiveUpdates >= 5 && currentTime === this.lastRecordedTime) {\n          this.consecutiveUpdates++;\n          this.waiting_();\n        } else if (currentTime === this.lastRecordedTime) {\n          this.consecutiveUpdates++;\n        } else {\n          this.consecutiveUpdates = 0;\n          this.lastRecordedTime = currentTime;\n        }\n      }\n      /**\n       * Cancels any pending timers and resets the 'timeupdate' mechanism\n       * designed to detect that we are stalled\n       *\n       * @private\n       */\n\n    }, {\n      key: 'cancelTimer_',\n      value: function cancelTimer_() {\n        this.consecutiveUpdates = 0;\n\n        if (this.timer_) {\n          this.logger_('cancelTimer_');\n          clearTimeout(this.timer_);\n        }\n\n        this.timer_ = null;\n      }\n      /**\n       * Fixes situations where there's a bad seek\n       *\n       * @return {Boolean} whether an action was taken to fix the seek\n       * @private\n       */\n\n    }, {\n      key: 'fixesBadSeeks_',\n      value: function fixesBadSeeks_() {\n        var seeking = this.tech_.seeking();\n\n        if (!seeking) {\n          return false;\n        }\n\n        var seekable = this.seekable();\n        var currentTime = this.tech_.currentTime();\n        var isAfterSeekableRange = this.afterSeekableWindow_(seekable, currentTime, this.media(), this.allowSeeksWithinUnsafeLiveWindow);\n        var seekTo = void 0;\n\n        if (isAfterSeekableRange) {\n          var seekableEnd = seekable.end(seekable.length - 1); // sync to live point (if VOD, our seekable was updated and we're simply adjusting)\n\n          seekTo = seekableEnd;\n        }\n\n        if (this.beforeSeekableWindow_(seekable, currentTime)) {\n          var seekableStart = seekable.start(0); // sync to the beginning of the live window\n          // provide a buffer of .1 seconds to handle rounding/imprecise numbers\n\n          seekTo = seekableStart + SAFE_TIME_DELTA;\n        }\n\n        if (typeof seekTo !== 'undefined') {\n          this.logger_('Trying to seek outside of seekable at time ' + currentTime + ' with ' + ('seekable range ' + printableRange(seekable) + '. Seeking to ') + (seekTo + '.'));\n          this.seekTo(seekTo);\n          return true;\n        }\n\n        return false;\n      }\n      /**\n       * Handler for situations when we determine the player is waiting.\n       *\n       * @private\n       */\n\n    }, {\n      key: 'waiting_',\n      value: function waiting_() {\n        if (this.techWaiting_()) {\n          return;\n        } // All tech waiting checks failed. Use last resort correction\n\n\n        var currentTime = this.tech_.currentTime();\n        var buffered = this.tech_.buffered();\n        var currentRange = findRange(buffered, currentTime); // Sometimes the player can stall for unknown reasons within a contiguous buffered\n        // region with no indication that anything is amiss (seen in Firefox). Seeking to\n        // currentTime is usually enough to kickstart the player. This checks that the player\n        // is currently within a buffered region before attempting a corrective seek.\n        // Chrome does not appear to continue `timeupdate` events after a `waiting` event\n        // until there is ~ 3 seconds of forward buffer available. PlaybackWatcher should also\n        // make sure there is ~3 seconds of forward buffer before taking any corrective action\n        // to avoid triggering an `unknownwaiting` event when the network is slow.\n\n        if (currentRange.length && currentTime + 3 <= currentRange.end(0)) {\n          this.cancelTimer_();\n          this.seekTo(currentTime);\n          this.logger_('Stopped at ' + currentTime + ' while inside a buffered region ' + ('[' + currentRange.start(0) + ' -> ' + currentRange.end(0) + ']. Attempting to resume ') + 'playback by seeking to the current time.'); // unknown waiting corrections may be useful for monitoring QoS\n\n          this.tech_.trigger({\n            type: 'usage',\n            name: 'hls-unknown-waiting'\n          });\n          return;\n        }\n      }\n      /**\n       * Handler for situations when the tech fires a `waiting` event\n       *\n       * @return {Boolean}\n       *         True if an action (or none) was needed to correct the waiting. False if no\n       *         checks passed\n       * @private\n       */\n\n    }, {\n      key: 'techWaiting_',\n      value: function techWaiting_() {\n        var seekable = this.seekable();\n        var currentTime = this.tech_.currentTime();\n\n        if (this.tech_.seeking() && this.fixesBadSeeks_()) {\n          // Tech is seeking or bad seek fixed, no action needed\n          return true;\n        }\n\n        if (this.tech_.seeking() || this.timer_ !== null) {\n          // Tech is seeking or already waiting on another action, no action needed\n          return true;\n        }\n\n        if (this.beforeSeekableWindow_(seekable, currentTime)) {\n          var livePoint = seekable.end(seekable.length - 1);\n          this.logger_('Fell out of live window at time ' + currentTime + '. Seeking to ' + ('live point (seekable end) ' + livePoint));\n          this.cancelTimer_();\n          this.seekTo(livePoint); // live window resyncs may be useful for monitoring QoS\n\n          this.tech_.trigger({\n            type: 'usage',\n            name: 'hls-live-resync'\n          });\n          return true;\n        }\n\n        var buffered = this.tech_.buffered();\n        var nextRange = findNextRange(buffered, currentTime);\n\n        if (this.videoUnderflow_(nextRange, buffered, currentTime)) {\n          // Even though the video underflowed and was stuck in a gap, the audio overplayed\n          // the gap, leading currentTime into a buffered range. Seeking to currentTime\n          // allows the video to catch up to the audio position without losing any audio\n          // (only suffering ~3 seconds of frozen video and a pause in audio playback).\n          this.cancelTimer_();\n          this.seekTo(currentTime); // video underflow may be useful for monitoring QoS\n\n          this.tech_.trigger({\n            type: 'usage',\n            name: 'hls-video-underflow'\n          });\n          return true;\n        } // check for gap\n\n\n        if (nextRange.length > 0) {\n          var difference = nextRange.start(0) - currentTime;\n          this.logger_('Stopped at ' + currentTime + ', setting timer for ' + difference + ', seeking ' + ('to ' + nextRange.start(0)));\n          this.timer_ = setTimeout(this.skipTheGap_.bind(this), difference * 1000, currentTime);\n          return true;\n        } // All checks failed. Returning false to indicate failure to correct waiting\n\n\n        return false;\n      }\n    }, {\n      key: 'afterSeekableWindow_',\n      value: function afterSeekableWindow_(seekable, currentTime, playlist) {\n        var allowSeeksWithinUnsafeLiveWindow = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : false;\n\n        if (!seekable.length) {\n          // we can't make a solid case if there's no seekable, default to false\n          return false;\n        }\n\n        var allowedEnd = seekable.end(seekable.length - 1) + SAFE_TIME_DELTA;\n        var isLive = !playlist.endList;\n\n        if (isLive && allowSeeksWithinUnsafeLiveWindow) {\n          allowedEnd = seekable.end(seekable.length - 1) + playlist.targetDuration * 3;\n        }\n\n        if (currentTime > allowedEnd) {\n          return true;\n        }\n\n        return false;\n      }\n    }, {\n      key: 'beforeSeekableWindow_',\n      value: function beforeSeekableWindow_(seekable, currentTime) {\n        if (seekable.length && // can't fall before 0 and 0 seekable start identifies VOD stream\n        seekable.start(0) > 0 && currentTime < seekable.start(0) - SAFE_TIME_DELTA) {\n          return true;\n        }\n\n        return false;\n      }\n    }, {\n      key: 'videoUnderflow_',\n      value: function videoUnderflow_(nextRange, buffered, currentTime) {\n        if (nextRange.length === 0) {\n          // Even if there is no available next range, there is still a possibility we are\n          // stuck in a gap due to video underflow.\n          var gap = this.gapFromVideoUnderflow_(buffered, currentTime);\n\n          if (gap) {\n            this.logger_('Encountered a gap in video from ' + gap.start + ' to ' + gap.end + '. ' + ('Seeking to current time ' + currentTime));\n            return true;\n          }\n        }\n\n        return false;\n      }\n      /**\n       * Timer callback. If playback still has not proceeded, then we seek\n       * to the start of the next buffered region.\n       *\n       * @private\n       */\n\n    }, {\n      key: 'skipTheGap_',\n      value: function skipTheGap_(scheduledCurrentTime) {\n        var buffered = this.tech_.buffered();\n        var currentTime = this.tech_.currentTime();\n        var nextRange = findNextRange(buffered, currentTime);\n        this.cancelTimer_();\n\n        if (nextRange.length === 0 || currentTime !== scheduledCurrentTime) {\n          return;\n        }\n\n        this.logger_('skipTheGap_:', 'currentTime:', currentTime, 'scheduled currentTime:', scheduledCurrentTime, 'nextRange start:', nextRange.start(0)); // only seek if we still have not played\n\n        this.seekTo(nextRange.start(0) + TIME_FUDGE_FACTOR);\n        this.tech_.trigger({\n          type: 'usage',\n          name: 'hls-gap-skip'\n        });\n      }\n    }, {\n      key: 'gapFromVideoUnderflow_',\n      value: function gapFromVideoUnderflow_(buffered, currentTime) {\n        // At least in Chrome, if there is a gap in the video buffer, the audio will continue\n        // playing for ~3 seconds after the video gap starts. This is done to account for\n        // video buffer underflow/underrun (note that this is not done when there is audio\n        // buffer underflow/underrun -- in that case the video will stop as soon as it\n        // encounters the gap, as audio stalls are more noticeable/jarring to a user than\n        // video stalls). The player's time will reflect the playthrough of audio, so the\n        // time will appear as if we are in a buffered region, even if we are stuck in a\n        // \"gap.\"\n        //\n        // Example:\n        // video buffer:   0 => 10.1, 10.2 => 20\n        // audio buffer:   0 => 20\n        // overall buffer: 0 => 10.1, 10.2 => 20\n        // current time: 13\n        //\n        // Chrome's video froze at 10 seconds, where the video buffer encountered the gap,\n        // however, the audio continued playing until it reached ~3 seconds past the gap\n        // (13 seconds), at which point it stops as well. Since current time is past the\n        // gap, findNextRange will return no ranges.\n        //\n        // To check for this issue, we see if there is a gap that starts somewhere within\n        // a 3 second range (3 seconds +/- 1 second) back from our current time.\n        var gaps = findGaps(buffered);\n\n        for (var i = 0; i < gaps.length; i++) {\n          var start = gaps.start(i);\n          var end = gaps.end(i); // gap is starts no more than 4 seconds back\n\n          if (currentTime - start < 4 && currentTime - start > 2) {\n            return {\n              start: start,\n              end: end\n            };\n          }\n        }\n\n        return null;\n      }\n    }]);\n    return PlaybackWatcher;\n  }();\n\n  var defaultOptions = {\n    errorInterval: 30,\n    getSource: function getSource(next) {\n      var tech = this.tech({\n        IWillNotUseThisInPlugins: true\n      });\n      var sourceObj = tech.currentSource_;\n      return next(sourceObj);\n    }\n  };\n  /**\n   * Main entry point for the plugin\n   *\n   * @param {Player} player a reference to a videojs Player instance\n   * @param {Object} [options] an object with plugin options\n   * @private\n   */\n\n  var initPlugin = function initPlugin(player, options) {\n    var lastCalled = 0;\n    var seekTo = 0;\n    var localOptions = videojs$1.mergeOptions(defaultOptions, options);\n    player.ready(function () {\n      player.trigger({\n        type: 'usage',\n        name: 'hls-error-reload-initialized'\n      });\n    });\n    /**\n     * Player modifications to perform that must wait until `loadedmetadata`\n     * has been triggered\n     *\n     * @private\n     */\n\n    var loadedMetadataHandler = function loadedMetadataHandler() {\n      if (seekTo) {\n        player.currentTime(seekTo);\n      }\n    };\n    /**\n     * Set the source on the player element, play, and seek if necessary\n     *\n     * @param {Object} sourceObj An object specifying the source url and mime-type to play\n     * @private\n     */\n\n\n    var setSource = function setSource(sourceObj) {\n      if (sourceObj === null || sourceObj === undefined) {\n        return;\n      }\n\n      seekTo = player.duration() !== Infinity && player.currentTime() || 0;\n      player.one('loadedmetadata', loadedMetadataHandler);\n      player.src(sourceObj);\n      player.trigger({\n        type: 'usage',\n        name: 'hls-error-reload'\n      });\n      player.play();\n    };\n    /**\n     * Attempt to get a source from either the built-in getSource function\n     * or a custom function provided via the options\n     *\n     * @private\n     */\n\n\n    var errorHandler = function errorHandler() {\n      // Do not attempt to reload the source if a source-reload occurred before\n      // 'errorInterval' time has elapsed since the last source-reload\n      if (Date.now() - lastCalled < localOptions.errorInterval * 1000) {\n        player.trigger({\n          type: 'usage',\n          name: 'hls-error-reload-canceled'\n        });\n        return;\n      }\n\n      if (!localOptions.getSource || typeof localOptions.getSource !== 'function') {\n        videojs$1.log.error('ERROR: reloadSourceOnError - The option getSource must be a function!');\n        return;\n      }\n\n      lastCalled = Date.now();\n      return localOptions.getSource.call(player, setSource);\n    };\n    /**\n     * Unbind any event handlers that were bound by the plugin\n     *\n     * @private\n     */\n\n\n    var cleanupEvents = function cleanupEvents() {\n      player.off('loadedmetadata', loadedMetadataHandler);\n      player.off('error', errorHandler);\n      player.off('dispose', cleanupEvents);\n    };\n    /**\n     * Cleanup before re-initializing the plugin\n     *\n     * @param {Object} [newOptions] an object with plugin options\n     * @private\n     */\n\n\n    var reinitPlugin = function reinitPlugin(newOptions) {\n      cleanupEvents();\n      initPlugin(player, newOptions);\n    };\n\n    player.on('error', errorHandler);\n    player.on('dispose', cleanupEvents); // Overwrite the plugin function so that we can correctly cleanup before\n    // initializing the plugin\n\n    player.reloadSourceOnError = reinitPlugin;\n  };\n  /**\n   * Reload the source when an error is detected as long as there\n   * wasn't an error previously within the last 30 seconds\n   *\n   * @param {Object} [options] an object with plugin options\n   */\n\n\n  var reloadSourceOnError = function reloadSourceOnError(options) {\n    initPlugin(this, options);\n  };\n\n  var version$3 = \"1.8.0\"; // since VHS handles HLS and DASH (and in the future, more types), use * to capture all\n\n  videojs$1.use('*', function (player) {\n    return {\n      setSource: function setSource(srcObj, next) {\n        // pass null as the first argument to indicate that the source is not rejected\n        next(null, srcObj);\n      },\n      // VHS needs to know when seeks happen. For external seeks (generated at the player\n      // level), this middleware will capture the action. For internal seeks (generated at\n      // the tech level), we use a wrapped function so that we can handle it on our own\n      // (specified elsewhere).\n      setCurrentTime: function setCurrentTime(time) {\n        if (player.vhs && player.currentSource().src === player.vhs.source_.src) {\n          player.vhs.setCurrentTime(time);\n        }\n\n        return time;\n      },\n      // Sync VHS after play requests.\n      // This specifically handles replay where the order of actions is\n      // play, video element will seek to 0 (skipping the setCurrentTime middleware)\n      // then triggers a play event.\n      play: function play() {\n        if (player.vhs && player.currentSource().src === player.vhs.source_.src) {\n          player.vhs.setCurrentTime(player.currentTime());\n        }\n      }\n    };\n  });\n  /**\n   * @file videojs-http-streaming.js\n   *\n   * The main file for the HLS project.\n   * License: https://github.com/videojs/videojs-http-streaming/blob/master/LICENSE\n   */\n\n  var Hls$1 = {\n    PlaylistLoader: PlaylistLoader,\n    Playlist: Playlist,\n    Decrypter: Decrypter,\n    AsyncStream: AsyncStream,\n    decrypt: decrypt,\n    utils: utils$1,\n    STANDARD_PLAYLIST_SELECTOR: lastBandwidthSelector,\n    INITIAL_PLAYLIST_SELECTOR: lowestBitrateCompatibleVariantSelector,\n    comparePlaylistBandwidth: comparePlaylistBandwidth,\n    comparePlaylistResolution: comparePlaylistResolution,\n    xhr: xhrFactory()\n  }; // Define getter/setters for config properites\n\n  ['GOAL_BUFFER_LENGTH', 'MAX_GOAL_BUFFER_LENGTH', 'GOAL_BUFFER_LENGTH_RATE', 'BUFFER_LOW_WATER_LINE', 'MAX_BUFFER_LOW_WATER_LINE', 'BUFFER_LOW_WATER_LINE_RATE', 'BANDWIDTH_VARIANCE'].forEach(function (prop) {\n    Object.defineProperty(Hls$1, prop, {\n      get: function get$$1() {\n        videojs$1.log.warn('using Hls.' + prop + ' is UNSAFE be sure you know what you are doing');\n        return Config[prop];\n      },\n      set: function set$$1(value) {\n        videojs$1.log.warn('using Hls.' + prop + ' is UNSAFE be sure you know what you are doing');\n\n        if (typeof value !== 'number' || value < 0) {\n          videojs$1.log.warn('value of Hls.' + prop + ' must be greater than or equal to 0');\n          return;\n        }\n\n        Config[prop] = value;\n      }\n    });\n  });\n  var LOCAL_STORAGE_KEY$1 = 'videojs-vhs';\n\n  var simpleTypeFromSourceType = function simpleTypeFromSourceType(type) {\n    var mpegurlRE = /^(audio|video|application)\\/(x-|vnd\\.apple\\.)?mpegurl/i;\n\n    if (mpegurlRE.test(type)) {\n      return 'hls';\n    }\n\n    var dashRE = /^application\\/dash\\+xml/i;\n\n    if (dashRE.test(type)) {\n      return 'dash';\n    }\n\n    return null;\n  };\n  /**\n   * Updates the selectedIndex of the QualityLevelList when a mediachange happens in hls.\n   *\n   * @param {QualityLevelList} qualityLevels The QualityLevelList to update.\n   * @param {PlaylistLoader} playlistLoader PlaylistLoader containing the new media info.\n   * @function handleHlsMediaChange\n   */\n\n\n  var handleHlsMediaChange = function handleHlsMediaChange(qualityLevels, playlistLoader) {\n    var newPlaylist = playlistLoader.media();\n    var selectedIndex = -1;\n\n    for (var i = 0; i < qualityLevels.length; i++) {\n      if (qualityLevels[i].id === newPlaylist.uri) {\n        selectedIndex = i;\n        break;\n      }\n    }\n\n    qualityLevels.selectedIndex_ = selectedIndex;\n    qualityLevels.trigger({\n      selectedIndex: selectedIndex,\n      type: 'change'\n    });\n  };\n  /**\n   * Adds quality levels to list once playlist metadata is available\n   *\n   * @param {QualityLevelList} qualityLevels The QualityLevelList to attach events to.\n   * @param {Object} hls Hls object to listen to for media events.\n   * @function handleHlsLoadedMetadata\n   */\n\n\n  var handleHlsLoadedMetadata = function handleHlsLoadedMetadata(qualityLevels, hls) {\n    hls.representations().forEach(function (rep) {\n      qualityLevels.addQualityLevel(rep);\n    });\n    handleHlsMediaChange(qualityLevels, hls.playlists);\n  }; // HLS is a source handler, not a tech. Make sure attempts to use it\n  // as one do not cause exceptions.\n\n\n  Hls$1.canPlaySource = function () {\n    return videojs$1.log.warn('HLS is no longer a tech. Please remove it from ' + 'your player\\'s techOrder.');\n  };\n\n  var emeKeySystems = function emeKeySystems(keySystemOptions, videoPlaylist, audioPlaylist) {\n    if (!keySystemOptions) {\n      return keySystemOptions;\n    } // upsert the content types based on the selected playlist\n\n\n    var keySystemContentTypes = {};\n\n    for (var keySystem in keySystemOptions) {\n      keySystemContentTypes[keySystem] = {\n        audioContentType: 'audio/mp4; codecs=\"' + audioPlaylist.attributes.CODECS + '\"',\n        videoContentType: 'video/mp4; codecs=\"' + videoPlaylist.attributes.CODECS + '\"'\n      };\n\n      if (videoPlaylist.contentProtection && videoPlaylist.contentProtection[keySystem] && videoPlaylist.contentProtection[keySystem].pssh) {\n        keySystemContentTypes[keySystem].pssh = videoPlaylist.contentProtection[keySystem].pssh;\n      } // videojs-contrib-eme accepts the option of specifying: 'com.some.cdm': 'url'\n      // so we need to prevent overwriting the URL entirely\n\n\n      if (typeof keySystemOptions[keySystem] === 'string') {\n        keySystemContentTypes[keySystem].url = keySystemOptions[keySystem];\n      }\n    }\n\n    return videojs$1.mergeOptions(keySystemOptions, keySystemContentTypes);\n  };\n\n  var setupEmeOptions = function setupEmeOptions(hlsHandler) {\n    if (hlsHandler.options_.sourceType !== 'dash') {\n      return;\n    }\n\n    var player = videojs$1.players[hlsHandler.tech_.options_.playerId];\n\n    if (player.eme) {\n      var sourceOptions = emeKeySystems(hlsHandler.source_.keySystems, hlsHandler.playlists.media(), hlsHandler.masterPlaylistController_.mediaTypes_.AUDIO.activePlaylistLoader.media());\n\n      if (sourceOptions) {\n        player.currentSource().keySystems = sourceOptions; // works around https://bugs.chromium.org/p/chromium/issues/detail?id=895449\n\n        if (player.eme.initializeMediaKeys) {\n          player.eme.initializeMediaKeys();\n        }\n      }\n    }\n  };\n\n  var getVhsLocalStorage = function getVhsLocalStorage() {\n    if (!window.localStorage) {\n      return null;\n    }\n\n    var storedObject = window.localStorage.getItem(LOCAL_STORAGE_KEY$1);\n\n    if (!storedObject) {\n      return null;\n    }\n\n    try {\n      return JSON.parse(storedObject);\n    } catch (e) {\n      // someone may have tampered with the value\n      return null;\n    }\n  };\n\n  var updateVhsLocalStorage = function updateVhsLocalStorage(options) {\n    if (!window.localStorage) {\n      return false;\n    }\n\n    var objectToStore = getVhsLocalStorage();\n    objectToStore = objectToStore ? videojs$1.mergeOptions(objectToStore, options) : options;\n\n    try {\n      window.localStorage.setItem(LOCAL_STORAGE_KEY$1, JSON.stringify(objectToStore));\n    } catch (e) {\n      // Throws if storage is full (e.g., always on iOS 5+ Safari private mode, where\n      // storage is set to 0).\n      // https://developer.mozilla.org/en-US/docs/Web/API/Storage/setItem#Exceptions\n      // No need to perform any operation.\n      return false;\n    }\n\n    return objectToStore;\n  };\n  /**\n   * Whether the browser has built-in HLS support.\n   */\n\n\n  Hls$1.supportsNativeHls = function () {\n    var video = document.createElement('video'); // native HLS is definitely not supported if HTML5 video isn't\n\n    if (!videojs$1.getTech('Html5').isSupported()) {\n      return false;\n    } // HLS manifests can go by many mime-types\n\n\n    var canPlay = [// Apple santioned\n    'application/vnd.apple.mpegurl', // Apple sanctioned for backwards compatibility\n    'audio/mpegurl', // Very common\n    'audio/x-mpegurl', // Very common\n    'application/x-mpegurl', // Included for completeness\n    'video/x-mpegurl', 'video/mpegurl', 'application/mpegurl'];\n    return canPlay.some(function (canItPlay) {\n      return /maybe|probably/i.test(video.canPlayType(canItPlay));\n    });\n  }();\n\n  Hls$1.supportsNativeDash = function () {\n    if (!videojs$1.getTech('Html5').isSupported()) {\n      return false;\n    }\n\n    return /maybe|probably/i.test(document.createElement('video').canPlayType('application/dash+xml'));\n  }();\n\n  Hls$1.supportsTypeNatively = function (type) {\n    if (type === 'hls') {\n      return Hls$1.supportsNativeHls;\n    }\n\n    if (type === 'dash') {\n      return Hls$1.supportsNativeDash;\n    }\n\n    return false;\n  };\n  /**\n   * HLS is a source handler, not a tech. Make sure attempts to use it\n   * as one do not cause exceptions.\n   */\n\n\n  Hls$1.isSupported = function () {\n    return videojs$1.log.warn('HLS is no longer a tech. Please remove it from ' + 'your player\\'s techOrder.');\n  };\n\n  var Component$1 = videojs$1.getComponent('Component');\n  /**\n   * The Hls Handler object, where we orchestrate all of the parts\n   * of HLS to interact with video.js\n   *\n   * @class HlsHandler\n   * @extends videojs.Component\n   * @param {Object} source the soruce object\n   * @param {Tech} tech the parent tech object\n   * @param {Object} options optional and required options\n   */\n\n  var HlsHandler = function (_Component) {\n    inherits$1(HlsHandler, _Component);\n\n    function HlsHandler(source, tech, options) {\n      classCallCheck$1(this, HlsHandler); // tech.player() is deprecated but setup a reference to HLS for\n      // backwards-compatibility\n\n      var _this = possibleConstructorReturn$1(this, (HlsHandler.__proto__ || Object.getPrototypeOf(HlsHandler)).call(this, tech, options.hls));\n\n      if (tech.options_ && tech.options_.playerId) {\n        var _player = videojs$1(tech.options_.playerId);\n\n        if (!_player.hasOwnProperty('hls')) {\n          Object.defineProperty(_player, 'hls', {\n            get: function get$$1() {\n              videojs$1.log.warn('player.hls is deprecated. Use player.tech().hls instead.');\n              tech.trigger({\n                type: 'usage',\n                name: 'hls-player-access'\n              });\n              return _this;\n            },\n            configurable: true\n          });\n        } // Set up a reference to the HlsHandler from player.vhs. This allows users to start\n        // migrating from player.tech_.hls... to player.vhs... for API access. Although this\n        // isn't the most appropriate form of reference for video.js (since all APIs should\n        // be provided through core video.js), it is a common pattern for plugins, and vhs\n        // will act accordingly.\n\n\n        _player.vhs = _this; // deprecated, for backwards compatibility\n\n        _player.dash = _this;\n        _this.player_ = _player;\n      }\n\n      _this.tech_ = tech;\n      _this.source_ = source;\n      _this.stats = {};\n\n      _this.setOptions_();\n\n      if (_this.options_.overrideNative && tech.overrideNativeAudioTracks && tech.overrideNativeVideoTracks) {\n        tech.overrideNativeAudioTracks(true);\n        tech.overrideNativeVideoTracks(true);\n      } else if (_this.options_.overrideNative && (tech.featuresNativeVideoTracks || tech.featuresNativeAudioTracks)) {\n        // overriding native HLS only works if audio tracks have been emulated\n        // error early if we're misconfigured\n        throw new Error('Overriding native HLS requires emulated tracks. ' + 'See https://git.io/vMpjB');\n      } // listen for fullscreenchange events for this player so that we\n      // can adjust our quality selection quickly\n\n\n      _this.on(document, ['fullscreenchange', 'webkitfullscreenchange', 'mozfullscreenchange', 'MSFullscreenChange'], function (event) {\n        var fullscreenElement = document.fullscreenElement || document.webkitFullscreenElement || document.mozFullScreenElement || document.msFullscreenElement;\n\n        if (fullscreenElement && fullscreenElement.contains(_this.tech_.el())) {\n          _this.masterPlaylistController_.smoothQualityChange_();\n        }\n      }); // Handle seeking when looping - middleware doesn't handle this seek event from the tech\n\n\n      _this.on(_this.tech_, 'seeking', function () {\n        if (this.tech_.seeking() && this.tech_.currentTime() === 0 && this.tech_.player_.loop()) {\n          this.setCurrentTime(0);\n        }\n      });\n\n      _this.on(_this.tech_, 'error', function () {\n        if (this.masterPlaylistController_) {\n          this.masterPlaylistController_.pauseLoading();\n        }\n      });\n\n      _this.on(_this.tech_, 'play', _this.play);\n\n      return _this;\n    }\n\n    createClass$1(HlsHandler, [{\n      key: 'setOptions_',\n      value: function setOptions_() {\n        var _this2 = this; // defaults\n\n\n        this.options_.withCredentials = this.options_.withCredentials || false;\n        this.options_.limitRenditionByPlayerDimensions = this.options_.limitRenditionByPlayerDimensions === false ? false : true;\n        this.options_.smoothQualityChange = this.options_.smoothQualityChange || false;\n        this.options_.useBandwidthFromLocalStorage = typeof this.source_.useBandwidthFromLocalStorage !== 'undefined' ? this.source_.useBandwidthFromLocalStorage : this.options_.useBandwidthFromLocalStorage || false;\n        this.options_.customTagParsers = this.options_.customTagParsers || [];\n        this.options_.customTagMappers = this.options_.customTagMappers || [];\n\n        if (typeof this.options_.blacklistDuration !== 'number') {\n          this.options_.blacklistDuration = 5 * 60;\n        }\n\n        if (typeof this.options_.bandwidth !== 'number') {\n          if (this.options_.useBandwidthFromLocalStorage) {\n            var storedObject = getVhsLocalStorage();\n\n            if (storedObject && storedObject.bandwidth) {\n              this.options_.bandwidth = storedObject.bandwidth;\n              this.tech_.trigger({\n                type: 'usage',\n                name: 'hls-bandwidth-from-local-storage'\n              });\n            }\n\n            if (storedObject && storedObject.throughput) {\n              this.options_.throughput = storedObject.throughput;\n              this.tech_.trigger({\n                type: 'usage',\n                name: 'hls-throughput-from-local-storage'\n              });\n            }\n          }\n        } // if bandwidth was not set by options or pulled from local storage, start playlist\n        // selection at a reasonable bandwidth\n\n\n        if (typeof this.options_.bandwidth !== 'number') {\n          this.options_.bandwidth = Config.INITIAL_BANDWIDTH;\n        } // If the bandwidth number is unchanged from the initial setting\n        // then this takes precedence over the enableLowInitialPlaylist option\n\n\n        this.options_.enableLowInitialPlaylist = this.options_.enableLowInitialPlaylist && this.options_.bandwidth === Config.INITIAL_BANDWIDTH; // grab options passed to player.src\n\n        ['withCredentials', 'limitRenditionByPlayerDimensions', 'bandwidth', 'smoothQualityChange', 'customTagParsers', 'customTagMappers'].forEach(function (option) {\n          if (typeof _this2.source_[option] !== 'undefined') {\n            _this2.options_[option] = _this2.source_[option];\n          }\n        });\n        this.limitRenditionByPlayerDimensions = this.options_.limitRenditionByPlayerDimensions;\n      }\n      /**\n       * called when player.src gets called, handle a new source\n       *\n       * @param {Object} src the source object to handle\n       */\n\n    }, {\n      key: 'src',\n      value: function src(_src, type) {\n        var _this3 = this; // do nothing if the src is falsey\n\n\n        if (!_src) {\n          return;\n        }\n\n        this.setOptions_(); // add master playlist controller options\n\n        this.options_.url = this.source_.src;\n        this.options_.tech = this.tech_;\n        this.options_.externHls = Hls$1;\n        this.options_.sourceType = simpleTypeFromSourceType(type); // Whenever we seek internally, we should update both the tech and call our own\n        // setCurrentTime function. This is needed because \"seeking\" events aren't always\n        // reliable. External seeks (via the player object) are handled via middleware.\n\n        this.options_.seekTo = function (time) {\n          _this3.tech_.setCurrentTime(time);\n\n          _this3.setCurrentTime(time);\n        };\n\n        this.masterPlaylistController_ = new MasterPlaylistController(this.options_);\n        this.playbackWatcher_ = new PlaybackWatcher(videojs$1.mergeOptions(this.options_, {\n          seekable: function seekable$$1() {\n            return _this3.seekable();\n          },\n          media: function media() {\n            return _this3.masterPlaylistController_.media();\n          }\n        }));\n        this.masterPlaylistController_.on('error', function () {\n          var player = videojs$1.players[_this3.tech_.options_.playerId];\n          player.error(_this3.masterPlaylistController_.error);\n        }); // `this` in selectPlaylist should be the HlsHandler for backwards\n        // compatibility with < v2\n\n        this.masterPlaylistController_.selectPlaylist = this.selectPlaylist ? this.selectPlaylist.bind(this) : Hls$1.STANDARD_PLAYLIST_SELECTOR.bind(this);\n        this.masterPlaylistController_.selectInitialPlaylist = Hls$1.INITIAL_PLAYLIST_SELECTOR.bind(this); // re-expose some internal objects for backwards compatibility with < v2\n\n        this.playlists = this.masterPlaylistController_.masterPlaylistLoader_;\n        this.mediaSource = this.masterPlaylistController_.mediaSource; // Proxy assignment of some properties to the master playlist\n        // controller. Using a custom property for backwards compatibility\n        // with < v2\n\n        Object.defineProperties(this, {\n          selectPlaylist: {\n            get: function get$$1() {\n              return this.masterPlaylistController_.selectPlaylist;\n            },\n            set: function set$$1(selectPlaylist) {\n              this.masterPlaylistController_.selectPlaylist = selectPlaylist.bind(this);\n            }\n          },\n          throughput: {\n            get: function get$$1() {\n              return this.masterPlaylistController_.mainSegmentLoader_.throughput.rate;\n            },\n            set: function set$$1(throughput) {\n              this.masterPlaylistController_.mainSegmentLoader_.throughput.rate = throughput; // By setting `count` to 1 the throughput value becomes the starting value\n              // for the cumulative average\n\n              this.masterPlaylistController_.mainSegmentLoader_.throughput.count = 1;\n            }\n          },\n          bandwidth: {\n            get: function get$$1() {\n              return this.masterPlaylistController_.mainSegmentLoader_.bandwidth;\n            },\n            set: function set$$1(bandwidth) {\n              this.masterPlaylistController_.mainSegmentLoader_.bandwidth = bandwidth; // setting the bandwidth manually resets the throughput counter\n              // `count` is set to zero that current value of `rate` isn't included\n              // in the cumulative average\n\n              this.masterPlaylistController_.mainSegmentLoader_.throughput = {\n                rate: 0,\n                count: 0\n              };\n            }\n          },\n\n          /**\n           * `systemBandwidth` is a combination of two serial processes bit-rates. The first\n           * is the network bitrate provided by `bandwidth` and the second is the bitrate of\n           * the entire process after that - decryption, transmuxing, and appending - provided\n           * by `throughput`.\n           *\n           * Since the two process are serial, the overall system bandwidth is given by:\n           *   sysBandwidth = 1 / (1 / bandwidth + 1 / throughput)\n           */\n          systemBandwidth: {\n            get: function get$$1() {\n              var invBandwidth = 1 / (this.bandwidth || 1);\n              var invThroughput = void 0;\n\n              if (this.throughput > 0) {\n                invThroughput = 1 / this.throughput;\n              } else {\n                invThroughput = 0;\n              }\n\n              var systemBitrate = Math.floor(1 / (invBandwidth + invThroughput));\n              return systemBitrate;\n            },\n            set: function set$$1() {\n              videojs$1.log.error('The \"systemBandwidth\" property is read-only');\n            }\n          }\n        });\n\n        if (this.options_.bandwidth) {\n          this.bandwidth = this.options_.bandwidth;\n        }\n\n        if (this.options_.throughput) {\n          this.throughput = this.options_.throughput;\n        }\n\n        Object.defineProperties(this.stats, {\n          bandwidth: {\n            get: function get$$1() {\n              return _this3.bandwidth || 0;\n            },\n            enumerable: true\n          },\n          mediaRequests: {\n            get: function get$$1() {\n              return _this3.masterPlaylistController_.mediaRequests_() || 0;\n            },\n            enumerable: true\n          },\n          mediaRequestsAborted: {\n            get: function get$$1() {\n              return _this3.masterPlaylistController_.mediaRequestsAborted_() || 0;\n            },\n            enumerable: true\n          },\n          mediaRequestsTimedout: {\n            get: function get$$1() {\n              return _this3.masterPlaylistController_.mediaRequestsTimedout_() || 0;\n            },\n            enumerable: true\n          },\n          mediaRequestsErrored: {\n            get: function get$$1() {\n              return _this3.masterPlaylistController_.mediaRequestsErrored_() || 0;\n            },\n            enumerable: true\n          },\n          mediaTransferDuration: {\n            get: function get$$1() {\n              return _this3.masterPlaylistController_.mediaTransferDuration_() || 0;\n            },\n            enumerable: true\n          },\n          mediaBytesTransferred: {\n            get: function get$$1() {\n              return _this3.masterPlaylistController_.mediaBytesTransferred_() || 0;\n            },\n            enumerable: true\n          },\n          mediaSecondsLoaded: {\n            get: function get$$1() {\n              return _this3.masterPlaylistController_.mediaSecondsLoaded_() || 0;\n            },\n            enumerable: true\n          },\n          buffered: {\n            get: function get$$1() {\n              return timeRangesToArray(_this3.tech_.buffered());\n            },\n            enumerable: true\n          },\n          currentTime: {\n            get: function get$$1() {\n              return _this3.tech_.currentTime();\n            },\n            enumerable: true\n          },\n          currentSource: {\n            get: function get$$1() {\n              return _this3.tech_.currentSource_;\n            },\n            enumerable: true\n          },\n          currentTech: {\n            get: function get$$1() {\n              return _this3.tech_.name_;\n            },\n            enumerable: true\n          },\n          duration: {\n            get: function get$$1() {\n              return _this3.tech_.duration();\n            },\n            enumerable: true\n          },\n          master: {\n            get: function get$$1() {\n              return _this3.playlists.master;\n            },\n            enumerable: true\n          },\n          playerDimensions: {\n            get: function get$$1() {\n              return _this3.tech_.currentDimensions();\n            },\n            enumerable: true\n          },\n          seekable: {\n            get: function get$$1() {\n              return timeRangesToArray(_this3.tech_.seekable());\n            },\n            enumerable: true\n          },\n          timestamp: {\n            get: function get$$1() {\n              return Date.now();\n            },\n            enumerable: true\n          },\n          videoPlaybackQuality: {\n            get: function get$$1() {\n              return _this3.tech_.getVideoPlaybackQuality();\n            },\n            enumerable: true\n          }\n        });\n        this.tech_.one('canplay', this.masterPlaylistController_.setupFirstPlay.bind(this.masterPlaylistController_));\n        this.tech_.on('bandwidthupdate', function () {\n          if (_this3.options_.useBandwidthFromLocalStorage) {\n            updateVhsLocalStorage({\n              bandwidth: _this3.bandwidth,\n              throughput: Math.round(_this3.throughput)\n            });\n          }\n        });\n        this.masterPlaylistController_.on('selectedinitialmedia', function () {\n          // Add the manual rendition mix-in to HlsHandler\n          renditionSelectionMixin(_this3);\n          setupEmeOptions(_this3);\n        }); // the bandwidth of the primary segment loader is our best\n        // estimate of overall bandwidth\n\n        this.on(this.masterPlaylistController_, 'progress', function () {\n          this.tech_.trigger('progress');\n        });\n        this.tech_.ready(function () {\n          return _this3.setupQualityLevels_();\n        }); // do nothing if the tech has been disposed already\n        // this can occur if someone sets the src in player.ready(), for instance\n\n        if (!this.tech_.el()) {\n          return;\n        }\n\n        this.tech_.src(videojs$1.URL.createObjectURL(this.masterPlaylistController_.mediaSource));\n      }\n      /**\n       * Initializes the quality levels and sets listeners to update them.\n       *\n       * @method setupQualityLevels_\n       * @private\n       */\n\n    }, {\n      key: 'setupQualityLevels_',\n      value: function setupQualityLevels_() {\n        var _this4 = this;\n\n        var player = videojs$1.players[this.tech_.options_.playerId];\n\n        if (player && player.qualityLevels) {\n          this.qualityLevels_ = player.qualityLevels();\n          this.masterPlaylistController_.on('selectedinitialmedia', function () {\n            handleHlsLoadedMetadata(_this4.qualityLevels_, _this4);\n          });\n          this.playlists.on('mediachange', function () {\n            handleHlsMediaChange(_this4.qualityLevels_, _this4.playlists);\n          });\n        }\n      }\n      /**\n       * Begin playing the video.\n       */\n\n    }, {\n      key: 'play',\n      value: function play() {\n        this.masterPlaylistController_.play();\n      }\n      /**\n       * a wrapper around the function in MasterPlaylistController\n       */\n\n    }, {\n      key: 'setCurrentTime',\n      value: function setCurrentTime(currentTime) {\n        this.masterPlaylistController_.setCurrentTime(currentTime);\n      }\n      /**\n       * a wrapper around the function in MasterPlaylistController\n       */\n\n    }, {\n      key: 'duration',\n      value: function duration$$1() {\n        return this.masterPlaylistController_.duration();\n      }\n      /**\n       * a wrapper around the function in MasterPlaylistController\n       */\n\n    }, {\n      key: 'seekable',\n      value: function seekable$$1() {\n        return this.masterPlaylistController_.seekable();\n      }\n      /**\n       * Abort all outstanding work and cleanup.\n       */\n\n    }, {\n      key: 'dispose',\n      value: function dispose() {\n        if (this.playbackWatcher_) {\n          this.playbackWatcher_.dispose();\n        }\n\n        if (this.masterPlaylistController_) {\n          this.masterPlaylistController_.dispose();\n        }\n\n        if (this.qualityLevels_) {\n          this.qualityLevels_.dispose();\n        }\n\n        if (this.player_) {\n          delete this.player_.vhs;\n          delete this.player_.dash;\n          delete this.player_.hls;\n        }\n\n        if (this.tech_ && this.tech_.hls) {\n          delete this.tech_.hls;\n        }\n\n        get$1(HlsHandler.prototype.__proto__ || Object.getPrototypeOf(HlsHandler.prototype), 'dispose', this).call(this);\n      }\n    }, {\n      key: 'convertToStreamTime',\n      value: function convertToStreamTime(time, callback) {\n        return getStreamTime({\n          playlist: this.masterPlaylistController_.media(),\n          time: time,\n          callback: callback\n        });\n      } // the player must be playing before calling this\n\n    }, {\n      key: 'seekToStreamTime',\n      value: function seekToStreamTime$$1(streamTime, callback) {\n        var pauseAfterSeek = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : true;\n        var retryCount = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : 2;\n        return seekToStreamTime({\n          streamTime: streamTime,\n          playlist: this.masterPlaylistController_.media(),\n          retryCount: retryCount,\n          pauseAfterSeek: pauseAfterSeek,\n          seekTo: this.options_.seekTo,\n          tech: this.options_.tech,\n          callback: callback\n        });\n      }\n    }]);\n    return HlsHandler;\n  }(Component$1);\n  /**\n   * The Source Handler object, which informs video.js what additional\n   * MIME types are supported and sets up playback. It is registered\n   * automatically to the appropriate tech based on the capabilities of\n   * the browser it is running in. It is not necessary to use or modify\n   * this object in normal usage.\n   */\n\n\n  var HlsSourceHandler = {\n    name: 'videojs-http-streaming',\n    VERSION: version$3,\n    canHandleSource: function canHandleSource(srcObj) {\n      var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n      var localOptions = videojs$1.mergeOptions(videojs$1.options, options);\n      return HlsSourceHandler.canPlayType(srcObj.type, localOptions);\n    },\n    handleSource: function handleSource(source, tech) {\n      var options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};\n      var localOptions = videojs$1.mergeOptions(videojs$1.options, options);\n      tech.hls = new HlsHandler(source, tech, localOptions);\n      tech.hls.xhr = xhrFactory();\n      tech.hls.src(source.src, source.type);\n      return tech.hls;\n    },\n    canPlayType: function canPlayType(type) {\n      var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n\n      var _videojs$mergeOptions = videojs$1.mergeOptions(videojs$1.options, options),\n          overrideNative = _videojs$mergeOptions.hls.overrideNative;\n\n      var supportedType = simpleTypeFromSourceType(type);\n      var canUseMsePlayback = supportedType && (!Hls$1.supportsTypeNatively(supportedType) || overrideNative);\n      return canUseMsePlayback ? 'maybe' : '';\n    }\n  };\n\n  if (typeof videojs$1.MediaSource === 'undefined' || typeof videojs$1.URL === 'undefined') {\n    videojs$1.MediaSource = MediaSource;\n    videojs$1.URL = URL$1;\n  } // register source handlers with the appropriate techs\n\n\n  if (MediaSource.supportsNativeMediaSources()) {\n    videojs$1.getTech('Html5').registerSourceHandler(HlsSourceHandler, 0);\n  }\n\n  videojs$1.HlsHandler = HlsHandler;\n  videojs$1.HlsSourceHandler = HlsSourceHandler;\n  videojs$1.Hls = Hls$1;\n\n  if (!videojs$1.use) {\n    videojs$1.registerComponent('Hls', Hls$1);\n  }\n\n  videojs$1.options.hls = videojs$1.options.hls || {};\n\n  if (videojs$1.registerPlugin) {\n    videojs$1.registerPlugin('reloadSourceOnError', reloadSourceOnError);\n  } else {\n    videojs$1.plugin('reloadSourceOnError', reloadSourceOnError);\n  }\n\n  return videojs$1;\n\n}));\n","/*\r\n* Contains helper functions for dealing with VideoJsPlayer\r\n*/\r\n\r\nVideoJsPlayerHelper = new Class({\r\n    Implements: Options,\r\n\r\n    options: {\r\n        playerId: null,\r\n        url: null,\r\n        type: \"video/mp4\",\r\n\r\n        events: {\r\n            onMetadata: null,\r\n            onSeeked: null,\r\n            onInit: null,\r\n            onInitialPlay: null,\r\n            onPause: null,\r\n            onResume: null,\r\n            onSeeking: null,\r\n            onFinish: null\r\n        },\r\n\r\n        playerOptions: {\r\n            controls: true,\r\n            fluid: true,\r\n            playbackRates: [0.5, 1, 1.25, 1.5, 2]\r\n        }\r\n    },\r\n\r\n    VideoJsPlayerObj: null,\r\n\r\n    videoTemplate: Handlebars.compile(\"\\\r\n        <video class='video-js vjs-big-play-centered' id='{{id}}_video' controls> \\\r\n            <source src='{{url}}' type='{{type}}'> \\\r\n        </video> \\\r\n    \"),\r\n\r\n    audioTemplate: Handlebars.compile(\"\\\r\n        <audio class='video-js vjs-big-play-centered' id='{{id}}_audio' controls> \\\r\n            <source src='{{url}}' type='{{type}}'> \\\r\n        </audio> \\\r\n    \"),\r\n\r\n    originalSize: null,\r\n\r\n    //Events\r\n    onPause: null,\r\n    onResume: null,\r\n    onBeforeSeek: null,\r\n    onFinish: null,\r\n\r\n    initialize: function(options) {\r\n        this.setOptions(options);\r\n\r\n        var isAudio = this.options.type.startsWith(\"audio\");\r\n        if (isAudio) {\r\n            this.loadAudio(this.options);\r\n        }\r\n        else {\r\n            this.loadVideo(this.options);\r\n        }\r\n\r\n        this.addEvents();\r\n\r\n        return this;\r\n    },\r\n\r\n    loadAudio: function(options) {\r\n        var playerId = options.playerId;\r\n        this.mediaPlayerEl = this.createAudioElement(playerId, options.url, options.type);\r\n        \r\n        var audioId = playerId + \"_audio\";\r\n        this.mediaPlayer = videojs(audioId, options.playerOptions);\r\n    },\r\n\r\n    loadVideo: function(options) {\r\n        var playerId = options.playerId;\r\n        this.mediaPlayerEl = this.createVideoElement(playerId, options.url, options.type);\r\n        \r\n        var videoId = playerId + \"_video\";\r\n        this.mediaPlayer = videojs(videoId, options.playerOptions);\r\n    },\r\n\r\n    addEvents: function() {\r\n        var self = this;\r\n        // OnMetadata\r\n        this.mediaPlayer.on(\"loadedmetadata\", function (e, hash) {\r\n            if (self.options.onMetaData) {\r\n                self.options.onMetaData(self);\r\n            }\r\n        });\r\n\r\n        // OnSeek\r\n        this.mediaPlayer.on(\"seeked\", function() {\r\n            if (self.options.onSeek) {\r\n                self.options.onSeek(self);\r\n            }\r\n        });\r\n\r\n        // OnPause\r\n        this.mediaPlayer.on(\"pause\", function () {\r\n            if (self.options.onPause) {\r\n                self.options.onPause(self);\r\n            }\r\n        });\r\n\r\n        // OnSeeking\r\n        this.mediaPlayer.on(\"seeking\", function () {\r\n            if (self.options.onSeeking) {\r\n                self.options.onSeeking(self);\r\n            }\r\n        });\r\n\r\n        // OnSeeked\r\n        this.mediaPlayer.on(\"seeked\", function () {\r\n            if (self.options.onSeeked) {\r\n                self.options.onSeeked(self);\r\n            }\r\n        });\r\n\r\n        // OnFinish\r\n        this.mediaPlayer.on(\"ended\", function () {\r\n            if (self.options.onFinish) {\r\n                self.options.onFinish(self);\r\n            }\r\n\r\n            self.hasPlayed = false;\r\n        });\r\n\r\n        // OnResume\r\n        this.mediaPlayer.on(\"play\", function () {\r\n            if (self.options.onPlay) {\r\n                self.options.onPlay(self);\r\n            }\r\n        });\r\n\r\n        // OnInitialPlay\r\n        this.mediaPlayer.on(\"firstplay\", function () {\r\n            self.hasPlayed = true;\r\n\r\n            if (self.options.onInitialPlay) {\r\n                self.options.onInitialPlay(self);\r\n            }\r\n        });\r\n    },\r\n\r\n    createVideoElement: function(playerId, url, type) {\r\n        var videoHtml = this.videoTemplate({\r\n            id: playerId,\r\n            url: url,\r\n            type: type\r\n        });\r\n\r\n        var playerEl = $(playerId);\r\n        playerEl.set(\"html\", videoHtml);\r\n\r\n        return playerEl;\r\n    },\r\n\r\n    createAudioElement: function(playerId, url, type) {\r\n        var audioHtml = this.audioTemplate({\r\n            id: playerId,\r\n            url: url,\r\n            type: type\r\n        });\r\n\r\n        var playerEl = $(playerId);\r\n        playerEl.set(\"html\", audioHtml);\r\n\r\n        return playerEl;\r\n    },\r\n\r\n    seek: function(startTime) {\r\n        this.mediaPlayer.play();\r\n        this.mediaPlayer.currentTime(startTime);\r\n    },\r\n\r\n    unload: function() {\r\n        this.mediaPlayer.dispose();\r\n    },\r\n\r\n    getDuration: function() {\r\n        return this.mediaPlayer.duration();\r\n    },\r\n\r\n    getTime: function() {\r\n        return this.mediaPlayer.currentTime();\r\n    },\r\n\r\n    isPlaying: function() {\r\n        return !this.mediaPlayer.paused();\r\n    },\r\n    \r\n    isPaused: function() {\r\n        return this.mediaPlayer.paused();\r\n    },\r\n\r\n    isSeeking: function() {\r\n    }\r\n});\r\n"]}