]> git.immae.eu Git - github/Chocobozzz/PeerTube.git/blobdiff - client/src/assets/player/peertube-videojs-plugin.ts
Set last subtitle or subtitle in URL
[github/Chocobozzz/PeerTube.git] / client / src / assets / player / peertube-videojs-plugin.ts
index 2eddcb1d8dc828d2f120505767fd46601e3f3145..4a280b7efed111f6153011941697209e31705b09 100644 (file)
@@ -1,41 +1,40 @@
+// FIXME: something weird with our path definition in tsconfig and typings
+// @ts-ignore
 import * as videojs from 'video.js'
+
 import * as WebTorrent from 'webtorrent'
 import { VideoFile } from '../../../../shared/models/videos/video.model'
 import { renderVideo } from './video-renderer'
 import './settings-menu-button'
-import { PeertubePluginOptions, VideoJSComponentInterface, videojsUntyped } from './peertube-videojs-typings'
+import { PeertubePluginOptions, UserWatching, VideoJSCaption, VideoJSComponentInterface, videojsUntyped } from './peertube-videojs-typings'
+import { isMobile, timeToInt, videoFileMaxByResolution, videoFileMinByResolution } from './utils'
+import { PeertubeChunkStore } from './peertube-chunk-store'
 import {
-  getAverageBandwidth,
+  getAverageBandwidthInStore,
+  getStoredLastSubtitle,
   getStoredMute,
   getStoredVolume,
+  getStoredWebTorrentEnabled,
   saveAverageBandwidth,
+  saveLastSubtitle,
   saveMuteInStore,
   saveVolumeInStore
-} from './utils'
-import minBy from 'lodash-es/minBy'
-import maxBy from 'lodash-es/maxBy'
-
-const webtorrent = new WebTorrent({
-  tracker: {
-    rtcConfig: {
-      iceServers: [
-        {
-          urls: 'stun:stun.stunprotocol.org'
-        },
-        {
-          urls: 'stun:stun.framasoft.org'
-        }
-      ]
-    }
-  },
-  dht: false
-})
+} from './peertube-player-local-storage'
+
+const CacheChunkStore = require('cache-chunk-store')
+
+type PlayOptions = {
+  forcePlay?: boolean,
+  seek?: number,
+  delay?: number
+}
 
-const Plugin: VideoJSComponentInterface = videojsUntyped.getPlugin('plugin')
+const Plugin: VideoJSComponentInterface = videojs.getPlugin('plugin')
 class PeerTubePlugin extends Plugin {
   private readonly playerElement: HTMLVideoElement
 
   private readonly autoplay: boolean = false
+  private readonly startTime: number = 0
   private readonly savePlayerSrcFunction: Function
   private readonly videoFiles: VideoFile[]
   private readonly videoViewUrl: string
@@ -46,65 +45,111 @@ class PeerTubePlugin extends Plugin {
     AUTO_QUALITY_THRESHOLD_PERCENT: 30, // Bandwidth should be 30% more important than a resolution bitrate to change to it
     AUTO_QUALITY_OBSERVATION_TIME: 10000, // Wait 10 seconds after having change the resolution before another check
     AUTO_QUALITY_HIGHER_RESOLUTION_DELAY: 5000, // Buffering higher resolution during 5 seconds
-    BANDWIDTH_AVERAGE_NUMBER_OF_VALUES: 5 // Last 5 seconds to build average bandwidth
+    BANDWIDTH_AVERAGE_NUMBER_OF_VALUES: 5, // Last 5 seconds to build average bandwidth
+    USER_WATCHING_VIDEO_INTERVAL: 5000 // Every 5 seconds, notify the user is watching the video
   }
 
+  private readonly webtorrent = new WebTorrent({
+    tracker: {
+      rtcConfig: {
+        iceServers: [
+          {
+            urls: 'stun:stun.stunprotocol.org'
+          },
+          {
+            urls: 'stun:stun.framasoft.org'
+          }
+        ]
+      }
+    },
+    dht: false
+  })
+
   private player: any
   private currentVideoFile: VideoFile
   private torrent: WebTorrent.Torrent
+  private videoCaptions: VideoJSCaption[]
+  private defaultSubtitle: string
+
+  private renderer: any
+  private fakeRenderer: any
+  private destroyingFakeRenderer = false
+
   private autoResolution = true
+  private forbidAutoResolution = false
   private isAutoResolutionObservation = false
+  private playerRefusedP2P = false
 
-  private videoViewInterval
-  private torrentInfoInterval
-  private autoQualityInterval
-  private addTorrentDelay
-  private qualityObservationTimer
-  private runAutoQualitySchedulerTimer
+  private videoViewInterval: any
+  private torrentInfoInterval: any
+  private autoQualityInterval: any
+  private userWatchingVideoInterval: any
+  private addTorrentDelay: any
+  private qualityObservationTimer: any
+  private runAutoQualitySchedulerTimer: any
 
   private downloadSpeeds: number[] = []
 
   constructor (player: videojs.Player, options: PeertubePluginOptions) {
     super(player, options)
 
-    // Fix canplay event on google chrome by disabling default videojs autoplay
-    this.autoplay = this.player.options_.autoplay
-    this.player.options_.autoplay = false
+    // Disable auto play on iOS
+    this.autoplay = options.autoplay && this.isIOS() === false
+    this.playerRefusedP2P = !getStoredWebTorrentEnabled()
 
+    this.startTime = timeToInt(options.startTime)
     this.videoFiles = options.videoFiles
     this.videoViewUrl = options.videoViewUrl
     this.videoDuration = options.videoDuration
+    this.videoCaptions = options.videoCaptions
 
     this.savePlayerSrcFunction = this.player.src
-    // Hack to "simulate" src link in video.js >= 6
-    // Without this, we can't play the video after pausing it
-    // https://github.com/videojs/video.js/blob/master/src/js/player.js#L1633
-    this.player.src = () => true
-
     this.playerElement = options.playerElement
 
+    if (this.autoplay === true) this.player.addClass('vjs-has-autoplay')
+
     this.player.ready(() => {
+      const playerOptions = this.player.options_
+
       const volume = getStoredVolume()
       if (volume !== undefined) this.player.volume(volume)
-      const muted = getStoredMute()
+
+      const muted = playerOptions.muted !== undefined ? playerOptions.muted : getStoredMute()
       if (muted !== undefined) this.player.muted(muted)
 
+      this.defaultSubtitle = options.subtitle || getStoredLastSubtitle()
+
+      this.player.on('volumechange', () => {
+        saveVolumeInStore(this.player.volume())
+        saveMuteInStore(this.player.muted())
+      })
+
+      this.player.textTracks().on('change', () => {
+        const showing = this.player.textTracks().tracks_.find((t: { kind: string, mode: string }) => {
+          return t.kind === 'captions' && t.mode === 'showing'
+        })
+
+        if (!showing) {
+          saveLastSubtitle('off')
+          return
+        }
+
+        saveLastSubtitle(showing.language)
+      })
+
+      this.player.duration(options.videoDuration)
+
       this.initializePlayer()
       this.runTorrentInfoScheduler()
       this.runViewAdd()
 
+      if (options.userWatching) this.runUserWatchVideo(options.userWatching)
+
       this.player.one('play', () => {
-        // Don't run immediately scheduler, wait some seconds the TCP connections are maid
-        this.runAutoQualitySchedulerTimer = setTimeout(() => {
-          this.runAutoQualityScheduler()
-        }, this.CONSTANTS.AUTO_QUALITY_SCHEDULER)
+        // Don't run immediately scheduler, wait some seconds the TCP connections are made
+        this.runAutoQualitySchedulerTimer = setTimeout(() => this.runAutoQualityScheduler(), this.CONSTANTS.AUTO_QUALITY_SCHEDULER)
       })
     })
-
-    this.player.on('volumechange', () => {
-      saveVolumeInStore(this.player.volume())
-      saveMuteInStore(this.player.muted())
-    })
   }
 
   dispose () {
@@ -116,8 +161,12 @@ class PeerTubePlugin extends Plugin {
     clearInterval(this.torrentInfoInterval)
     clearInterval(this.autoQualityInterval)
 
+    if (this.userWatchingVideoInterval) clearInterval(this.userWatchingVideoInterval)
+
     // Don't need to destroy renderer, video player will be destroyed
     this.flushVideoFile(this.currentVideoFile, false)
+
+    this.destroyFakeRenderer()
   }
 
   getCurrentResolutionId () {
@@ -125,20 +174,27 @@ class PeerTubePlugin extends Plugin {
   }
 
   getCurrentResolutionLabel () {
-    return this.currentVideoFile ? this.currentVideoFile.resolution.label : ''
-  }
+    if (!this.currentVideoFile) return ''
 
-  updateVideoFile (videoFile?: VideoFile, delay = 0, done?: () => void) {
-    if (done === undefined) {
-      done = () => { /* empty */ }
-    }
+    const fps = this.currentVideoFile.fps >= 50 ? this.currentVideoFile.fps : ''
+    return this.currentVideoFile.resolution.label + fps
+  }
 
+  updateVideoFile (
+    videoFile?: VideoFile,
+    options: {
+      forcePlay?: boolean,
+      seek?: number,
+      delay?: number
+    } = {},
+    done: () => void = () => { /* empty */ }
+  ) {
     // Automatically choose the adapted video file
     if (videoFile === undefined) {
-      const savedAverageBandwidth = getAverageBandwidth()
+      const savedAverageBandwidth = getAverageBandwidthInStore()
       videoFile = savedAverageBandwidth
         ? this.getAppropriateFile(savedAverageBandwidth)
-        : this.videoFiles[0]
+        : this.pickAverageVideoFile()
     }
 
     // Don't add the same video file once again
@@ -149,13 +205,25 @@ class PeerTubePlugin extends Plugin {
     // Do not display error to user because we will have multiple fallback
     this.disableErrorDisplay()
 
+    // Hack to "simulate" src link in video.js >= 6
+    // Without this, we can't play the video after pausing it
+    // https://github.com/videojs/video.js/blob/master/src/js/player.js#L1633
     this.player.src = () => true
     const oldPlaybackRate = this.player.playbackRate()
 
     const previousVideoFile = this.currentVideoFile
     this.currentVideoFile = videoFile
 
-    this.addTorrent(this.currentVideoFile.magnetUri, previousVideoFile, delay, () => {
+    // Don't try on iOS that does not support MediaSource
+    // Or don't use P2P if webtorrent is disabled
+    if (this.isIOS() || this.playerRefusedP2P) {
+      return this.fallbackToHttp(options, () => {
+        this.player.playbackRate(oldPlaybackRate)
+        return done()
+      })
+    }
+
+    this.addTorrent(this.currentVideoFile.magnetUri, previousVideoFile, options, () => {
       this.player.playbackRate(oldPlaybackRate)
       return done()
     })
@@ -163,42 +231,122 @@ class PeerTubePlugin extends Plugin {
     this.trigger('videoFileUpdate')
   }
 
-  addTorrent (magnetOrTorrentUrl: string, previousVideoFile: VideoFile, delay = 0, done: Function) {
+  updateResolution (resolutionId: number, delay = 0) {
+    // Remember player state
+    const currentTime = this.player.currentTime()
+    const isPaused = this.player.paused()
+
+    // Remove poster to have black background
+    this.playerElement.poster = ''
+
+    // Hide bigPlayButton
+    if (!isPaused) {
+      this.player.bigPlayButton.hide()
+    }
+
+    const newVideoFile = this.videoFiles.find(f => f.resolution.id === resolutionId)
+    const options = {
+      forcePlay: false,
+      delay,
+      seek: currentTime + (delay / 1000)
+    }
+    this.updateVideoFile(newVideoFile, options)
+  }
+
+  flushVideoFile (videoFile: VideoFile, destroyRenderer = true) {
+    if (videoFile !== undefined && this.webtorrent.get(videoFile.magnetUri)) {
+      if (destroyRenderer === true && this.renderer && this.renderer.destroy) this.renderer.destroy()
+
+      this.webtorrent.remove(videoFile.magnetUri)
+      console.log('Removed ' + videoFile.magnetUri)
+    }
+  }
+
+  isAutoResolutionOn () {
+    return this.autoResolution
+  }
+
+  enableAutoResolution () {
+    this.autoResolution = true
+    this.trigger('autoResolutionUpdate')
+  }
+
+  disableAutoResolution (forbid = false) {
+    if (forbid === true) this.forbidAutoResolution = true
+
+    this.autoResolution = false
+    this.trigger('autoResolutionUpdate')
+  }
+
+  isAutoResolutionForbidden () {
+    return this.forbidAutoResolution === true
+  }
+
+  getCurrentVideoFile () {
+    return this.currentVideoFile
+  }
+
+  getTorrent () {
+    return this.torrent
+  }
+
+  private addTorrent (
+    magnetOrTorrentUrl: string,
+    previousVideoFile: VideoFile,
+    options: PlayOptions,
+    done: Function
+  ) {
     console.log('Adding ' + magnetOrTorrentUrl + '.')
 
     const oldTorrent = this.torrent
-    this.torrent = webtorrent.add(magnetOrTorrentUrl, torrent => {
+    const torrentOptions = {
+      store: (chunkLength: number, storeOpts: any) => new CacheChunkStore(new PeertubeChunkStore(chunkLength, storeOpts), {
+        max: 100
+      })
+    }
+
+    this.torrent = this.webtorrent.add(magnetOrTorrentUrl, torrentOptions, torrent => {
       console.log('Added ' + magnetOrTorrentUrl + '.')
 
-      // Pause the old torrent
       if (oldTorrent) {
-        oldTorrent.pause()
-        // Pause does not remove actual peers (in particular the webseed peer)
-        oldTorrent.removePeer(oldTorrent['ws'])
+        // Pause the old torrent
+        this.stopTorrent(oldTorrent)
+
+        // We use a fake renderer so we download correct pieces of the next file
+        if (options.delay) this.renderFileInFakeElement(torrent.files[ 0 ], options.delay)
       }
 
+      // Render the video in a few seconds? (on resolution change for example, we wait some seconds of the new video resolution)
       this.addTorrentDelay = setTimeout(() => {
+        // We don't need the fake renderer anymore
+        this.destroyFakeRenderer()
+
+        const paused = this.player.paused()
+
         this.flushVideoFile(previousVideoFile)
 
-        const options = { autoplay: true, controls: true }
-        renderVideo(torrent.files[0], this.playerElement, options,(err, renderer) => {
+        // Update progress bar (just for the UI), do not wait rendering
+        if (options.seek) this.player.currentTime(options.seek)
+
+        const renderVideoOptions = { autoplay: false, controls: true }
+        renderVideo(torrent.files[ 0 ], this.playerElement, renderVideoOptions, (err, renderer) => {
           this.renderer = renderer
 
-          if (err) return this.fallbackToHttp(done)
+          if (err) return this.fallbackToHttp(options, done)
 
-          if (!this.player.paused()) {
-            const playPromise = this.player.play()
-            if (playPromise !== undefined) return playPromise.then(done)
+          return this.tryToPlay(err => {
+            if (err) return done(err)
 
-            return done()
-          }
+            if (options.seek) this.seek(options.seek)
+            if (options.forcePlay === false && paused === true) this.player.pause()
 
-          return done()
+            return done()
+          })
         })
-      }, delay)
+      }, options.delay || 0)
     })
 
-    this.torrent.on('error', err => this.handleError(err))
+    this.torrent.on('error', (err: any) => console.error(err))
 
     this.torrent.on('warning', (err: any) => {
       // We don't support HTTP tracker but we don't care -> we use the web socket tracker
@@ -206,90 +354,100 @@ class PeerTubePlugin extends Plugin {
 
       // Users don't care about issues with WebRTC, but developers do so log it in the console
       if (err.message.indexOf('Ice connection failed') !== -1) {
-        console.error(err)
+        console.log(err)
         return
       }
 
       // Magnet hash is not up to date with the torrent file, add directly the torrent file
       if (err.message.indexOf('incorrect info hash') !== -1) {
         console.error('Incorrect info hash detected, falling back to torrent file.')
-        return this.addTorrent(this.torrent['xs'], previousVideoFile, 0, done)
+        const newOptions = { forcePlay: true, seek: options.seek }
+        return this.addTorrent(this.torrent[ 'xs' ], previousVideoFile, newOptions, done)
       }
 
-      return this.handleError(err)
-    })
-  }
-
-  updateResolution (resolutionId: number, delay = 0) {
-    // Remember player state
-    const currentTime = this.player.currentTime()
-    const isPaused = this.player.paused()
-
-    // Remove poster to have black background
-    this.playerElement.poster = ''
-
-    // Hide bigPlayButton
-    if (!isPaused) {
-      this.player.bigPlayButton.hide()
-    }
+      // Remote instance is down
+      if (err.message.indexOf('from xs param') !== -1) {
+        this.handleError(err)
+      }
 
-    const newVideoFile = this.videoFiles.find(f => f.resolution.id === resolutionId)
-    this.updateVideoFile(newVideoFile, delay, () => {
-      this.player.currentTime(currentTime)
-      this.player.handleTechSeeked_()
+      console.warn(err)
     })
   }
 
-  flushVideoFile (videoFile: VideoFile, destroyRenderer = true) {
-    if (videoFile !== undefined && webtorrent.get(videoFile.magnetUri)) {
-      if (destroyRenderer === true && this.renderer && this.renderer.destroy) this.renderer.destroy()
-
-      webtorrent.remove(videoFile.magnetUri)
-      console.log('Removed ' + videoFile.magnetUri)
+  private tryToPlay (done?: (err?: Error) => void) {
+    if (!done) done = function () { /* empty */ }
+
+    const playPromise = this.player.play()
+    if (playPromise !== undefined) {
+      return playPromise.then(done)
+                        .catch((err: Error) => {
+                          if (err.message.indexOf('The play() request was interrupted by a call to pause()') !== -1) {
+                            return
+                          }
+
+                          console.error(err)
+                          this.player.pause()
+                          this.player.posterImage.show()
+                          this.player.removeClass('vjs-has-autoplay')
+                          this.player.removeClass('vjs-has-big-play-button-clicked')
+
+                          return done()
+                        })
     }
-  }
-
-  isAutoResolutionOn () {
-    return this.autoResolution
-  }
 
-  enableAutoResolution () {
-    this.autoResolution = true
-    this.trigger('autoResolutionUpdate')
+    return done()
   }
 
-  disableAutoResolution () {
-    this.autoResolution = false
-    this.trigger('autoResolutionUpdate')
+  private seek (time: number) {
+    this.player.currentTime(time)
+    this.player.handleTechSeeked_()
   }
 
   private getAppropriateFile (averageDownloadSpeed?: number): VideoFile {
     if (this.videoFiles === undefined || this.videoFiles.length === 0) return undefined
     if (this.videoFiles.length === 1) return this.videoFiles[0]
-    if (this.torrent && this.torrent.progress === 1) return this.currentVideoFile
 
-    if (!averageDownloadSpeed) averageDownloadSpeed = this.getActualDownloadSpeed()
+    // Don't change the torrent is the play was ended
+    if (this.torrent && this.torrent.progress === 1 && this.player.ended()) return this.currentVideoFile
 
-    // Filter videos we can play according to our bandwidth
-    const filteredFiles = this.videoFiles.filter(f => {
-      const fileBitrate = (f.size / this.videoDuration)
-      let threshold = fileBitrate
+    if (!averageDownloadSpeed) averageDownloadSpeed = this.getAndSaveActualDownloadSpeed()
 
-      // If this is for a higher resolution or an initial load: add a margin
-      if (!this.currentVideoFile || f.resolution.id > this.currentVideoFile.resolution.id) {
-        threshold += ((fileBitrate * this.CONSTANTS.AUTO_QUALITY_THRESHOLD_PERCENT) / 100)
+    // Limit resolution according to player height
+    const playerHeight = this.playerElement.offsetHeight as number
+
+    // We take the first resolution just above the player height
+    // Example: player height is 530px, we want the 720p file instead of 480p
+    let maxResolution = this.videoFiles[0].resolution.id
+    for (let i = this.videoFiles.length - 1; i >= 0; i--) {
+      const resolutionId = this.videoFiles[i].resolution.id
+      if (resolutionId >= playerHeight) {
+        maxResolution = resolutionId
+        break
       }
+    }
 
-      return averageDownloadSpeed > threshold
-    })
+    // Filter videos we can play according to our screen resolution and bandwidth
+    const filteredFiles = this.videoFiles
+                              .filter(f => f.resolution.id <= maxResolution)
+                              .filter(f => {
+                                const fileBitrate = (f.size / this.videoDuration)
+                                let threshold = fileBitrate
+
+                                // If this is for a higher resolution or an initial load: add a margin
+                                if (!this.currentVideoFile || f.resolution.id > this.currentVideoFile.resolution.id) {
+                                  threshold += ((fileBitrate * this.CONSTANTS.AUTO_QUALITY_THRESHOLD_PERCENT) / 100)
+                                }
+
+                                return averageDownloadSpeed > threshold
+                              })
 
     // If the download speed is too bad, return the lowest resolution we have
-    if (filteredFiles.length === 0) return minBy(this.videoFiles, 'resolution.id')
+    if (filteredFiles.length === 0) return videoFileMinByResolution(this.videoFiles)
 
-    return maxBy(filteredFiles, 'resolution.id')
+    return videoFileMaxByResolution(filteredFiles)
   }
 
-  private getActualDownloadSpeed () {
+  private getAndSaveActualDownloadSpeed () {
     const start = Math.max(this.downloadSpeeds.length - this.CONSTANTS.BANDWIDTH_AVERAGE_NUMBER_OF_VALUES, 0)
     const lastDownloadSpeeds = this.downloadSpeeds.slice(start, this.downloadSpeeds.length)
     if (lastDownloadSpeeds.length === 0) return -1
@@ -304,20 +462,27 @@ class PeerTubePlugin extends Plugin {
   }
 
   private initializePlayer () {
+    if (isMobile()) this.player.addClass('vjs-is-mobile')
+
     this.initSmoothProgressBar()
 
+    this.initCaptions()
+
     this.alterInactivity()
 
     if (this.autoplay === true) {
       this.player.posterImage.hide()
-      this.updateVideoFile(undefined, 0, () => this.player.play())
-    } else {
-      // Proxy first play
-      const oldPlay = this.player.play.bind(this.player)
-      this.player.play = () => {
-        this.updateVideoFile(undefined, 0, () => oldPlay)
-        this.player.play = oldPlay
-      }
+
+      return this.updateVideoFile(undefined, { forcePlay: true, seek: this.startTime })
+    }
+
+    // Proxy first play
+    const oldPlay = this.player.play.bind(this.player)
+    this.player.play = () => {
+      this.player.addClass('vjs-has-big-play-button-clicked')
+      this.player.play = oldPlay
+
+      this.updateVideoFile(undefined, { forcePlay: true, seek: this.startTime })
     }
   }
 
@@ -368,13 +533,15 @@ class PeerTubePlugin extends Plugin {
       // Http fallback
       if (this.torrent === null) return this.trigger('torrentInfo', false)
 
-      // webtorrent.downloadSpeed because we need to take into account the potential old torrent too
-      if (webtorrent.downloadSpeed !== 0) this.downloadSpeeds.push(webtorrent.downloadSpeed)
+      // this.webtorrent.downloadSpeed because we need to take into account the potential old torrent too
+      if (this.webtorrent.downloadSpeed !== 0) this.downloadSpeeds.push(this.webtorrent.downloadSpeed)
 
       return this.trigger('torrentInfo', {
         downloadSpeed: this.torrent.downloadSpeed,
         numPeers: this.torrent.numPeers,
-        uploadSpeed: this.torrent.uploadSpeed
+        uploadSpeed: this.torrent.uploadSpeed,
+        downloaded: this.torrent.downloaded,
+        uploaded: this.torrent.uploaded
       })
     }, this.CONSTANTS.INFO_SCHEDULER)
   }
@@ -401,6 +568,21 @@ class PeerTubePlugin extends Plugin {
     }, 1000)
   }
 
+  private runUserWatchVideo (options: UserWatching) {
+    let lastCurrentTime = 0
+
+    this.userWatchingVideoInterval = setInterval(() => {
+      const currentTime = Math.floor(this.player.currentTime())
+
+      if (currentTime - lastCurrentTime >= 1) {
+        lastCurrentTime = currentTime
+
+        this.notifyUserIsWatching(currentTime, options.url, options.authorizationHeader)
+          .catch(err => console.error('Cannot notify user is watching.', err))
+      }
+    }, this.CONSTANTS.USER_WATCHING_VIDEO_INTERVAL)
+  }
+
   private clearVideoViewInterval () {
     if (this.videoViewInterval !== undefined) {
       clearInterval(this.videoViewInterval)
@@ -409,10 +591,25 @@ class PeerTubePlugin extends Plugin {
   }
 
   private addViewToVideo () {
+    if (!this.videoViewUrl) return Promise.resolve(undefined)
+
     return fetch(this.videoViewUrl, { method: 'POST' })
   }
 
-  private fallbackToHttp (done: Function) {
+  private notifyUserIsWatching (currentTime: number, url: string, authorizationHeader: string) {
+    const body = new URLSearchParams()
+    body.append('currentTime', currentTime.toString())
+
+    const headers = new Headers({ 'Authorization': authorizationHeader })
+
+    return fetch(url, { method: 'PUT', body, headers })
+  }
+
+  private fallbackToHttp (options: PlayOptions, done?: Function) {
+    const paused = this.player.paused()
+
+    this.disableAutoResolution(true)
+
     this.flushVideoFile(this.currentVideoFile, true)
     this.torrent = null
 
@@ -422,9 +619,15 @@ class PeerTubePlugin extends Plugin {
     const httpUrl = this.currentVideoFile.fileUrl
     this.player.src = this.savePlayerSrcFunction
     this.player.src(httpUrl)
-    this.player.play()
 
-    return done()
+    return this.tryToPlay(err => {
+      if (err && done) return done(err)
+
+      if (options.seek) this.seek(options.seek)
+      if (options.forcePlay === false && paused === true) this.player.pause()
+
+      if (done) return done()
+    })
   }
 
   private handleError (err: Error | string) {
@@ -439,6 +642,10 @@ class PeerTubePlugin extends Plugin {
     this.player.removeClass('vjs-error-display-enabled')
   }
 
+  private isIOS () {
+    return !!navigator.platform && /iPad|iPhone|iPod/.test(navigator.platform)
+  }
+
   private alterInactivity () {
     let saveInactivityTimeout: number
 
@@ -450,7 +657,7 @@ class PeerTubePlugin extends Plugin {
       this.player.options_.inactivityTimeout = saveInactivityTimeout
     }
 
-    const settingsDialog = this.player.children_.find(c => c.name_ === 'SettingsDialog')
+    const settingsDialog = this.player.children_.find((c: any) => c.name_ === 'SettingsDialog')
 
     this.player.controlBar.on('mouseenter', () => disableInactivity())
     settingsDialog.on('mouseenter', () => disableInactivity())
@@ -458,6 +665,63 @@ class PeerTubePlugin extends Plugin {
     settingsDialog.on('mouseleave', () => enableInactivity())
   }
 
+  private pickAverageVideoFile () {
+    if (this.videoFiles.length === 1) return this.videoFiles[0]
+
+    return this.videoFiles[Math.floor(this.videoFiles.length / 2)]
+  }
+
+  private stopTorrent (torrent: WebTorrent.Torrent) {
+    torrent.pause()
+    // Pause does not remove actual peers (in particular the webseed peer)
+    torrent.removePeer(torrent[ 'ws' ])
+  }
+
+  private renderFileInFakeElement (file: WebTorrent.TorrentFile, delay: number) {
+    this.destroyingFakeRenderer = false
+
+    const fakeVideoElem = document.createElement('video')
+    renderVideo(file, fakeVideoElem, { autoplay: false, controls: false }, (err, renderer) => {
+      this.fakeRenderer = renderer
+
+      // The renderer returns an error when we destroy it, so skip them
+      if (this.destroyingFakeRenderer === false && err) {
+        console.error('Cannot render new torrent in fake video element.', err)
+      }
+
+      // Load the future file at the correct time (in delay MS - 2 seconds)
+      fakeVideoElem.currentTime = this.player.currentTime() + (delay - 2000)
+    })
+  }
+
+  private destroyFakeRenderer () {
+    if (this.fakeRenderer) {
+      this.destroyingFakeRenderer = true
+
+      if (this.fakeRenderer.destroy) {
+        try {
+          this.fakeRenderer.destroy()
+        } catch (err) {
+          console.log('Cannot destroy correctly fake renderer.', err)
+        }
+      }
+      this.fakeRenderer = undefined
+    }
+  }
+
+  private initCaptions () {
+    for (const caption of this.videoCaptions) {
+      this.player.addRemoteTextTrack({
+        kind: 'captions',
+        label: caption.label,
+        language: caption.language,
+        id: caption.language,
+        src: caption.src,
+        default: this.defaultSubtitle === caption.language
+      }, false)
+    }
+  }
+
   // Thanks: https://github.com/videojs/video.js/issues/4460#issuecomment-312861657
   private initSmoothProgressBar () {
     const SeekBar = videojsUntyped.getComponent('SeekBar')
@@ -470,7 +734,7 @@ class PeerTubePlugin extends Plugin {
       const percent = time / this.player_.duration()
       return percent >= 1 ? 1 : percent
     }
-    SeekBar.prototype.handleMouseMove = function handleMouseMove (event) {
+    SeekBar.prototype.handleMouseMove = function handleMouseMove (event: any) {
       let newTime = this.calculateDistance(event) * this.player_.duration()
       if (newTime === this.player_.duration()) {
         newTime = newTime - 0.1
@@ -481,5 +745,5 @@ class PeerTubePlugin extends Plugin {
   }
 }
 
-videojsUntyped.registerPlugin('peertube', PeerTubePlugin)
+videojs.registerPlugin('peertube', PeerTubePlugin)
 export { PeerTubePlugin }