var player_data = JSON.parse(document.getElementById('player_data').innerHTML); var video_data = JSON.parse(document.getElementById('video_data').innerHTML); var options = { preload: 'auto', liveui: true, playbackRates: [0.25, 0.5, 0.75, 1.0, 1.25, 1.5, 1.75, 2.0], controlBar: { children: [ 'playToggle', 'volumePanel', 'currentTimeDisplay', 'timeDivider', 'durationDisplay', 'progressControl', 'remainingTimeDisplay', 'captionsButton', 'qualitySelector', 'playbackRateMenuButton', 'fullscreenToggle' ] }, html5: { hls: { overrideNative: true } } } if (player_data.aspect_ratio) { options.aspectRatio = player_data.aspect_ratio; } var embed_url = new URL(location); embed_url.searchParams.delete('v'); short_url = location.origin + '/' + video_data.id + embed_url.search; embed_url = location.origin + '/embed/' + video_data.id + embed_url.search; var shareOptions = { socials: ['fbFeed', 'tw', 'reddit', 'email'], url: short_url, title: player_data.title, description: player_data.description, image: player_data.thumbnail, embedCode: "" } videojs.Hls.xhr.beforeRequest = function(options) { if (options.uri.indexOf('videoplayback') === -1 && options.uri.indexOf('local=true') === -1) { options.uri = options.uri + '?local=true'; } return options; }; var player = videojs('player', options); if (location.pathname.startsWith('/embed/')) { player.overlay({ overlays: [{ start: 'loadstart', content: '

' + player_data.title + '

', end: 'playing', align: 'top' }, { start: 'pause', content: '

' + player_data.title + '

', end: 'playing', align: 'top' }] }); } player.on('error', function (event) { if (player.error().code === 2 || player.error().code === 4) { setTimeout(function (event) { console.log('An error occured in the player, reloading...'); var currentTime = player.currentTime(); var playbackRate = player.playbackRate(); var paused = player.paused(); player.load(); if (currentTime > 0.5) { currentTime -= 0.5; } player.currentTime(currentTime); player.playbackRate(playbackRate); if (!paused) { player.play(); } }, 5000); } }); // Add markers if (video_data.params.video_start > 0 || video_data.params.video_end > 0) { var markers = [{ time: video_data.params.video_start, text: 'Start' }]; if (video_data.params.video_end < 0) { markers.push({ time: video_data.length_seconds - 0.5, text: 'End' }); } else { markers.push({ time: video_data.params.video_end, text: 'End' }); } player.markers({ onMarkerReached: function (marker) { if (marker.text === 'End') { if (player.loop()) { player.markers.prev('Start'); } else { player.pause(); } } }, markers: markers }); player.currentTime(video_data.params.video_start); } player.volume(video_data.params.volume / 100); player.playbackRate(video_data.params.speed); player.on('waiting', function () { if (player.playbackRate() > 1 && player.liveTracker.isLive() && player.liveTracker.atLiveEdge()) { console.log('Player has caught up to source, resetting playbackRate.') player.playbackRate(1); } }); if (video_data.premiere_timestamp && Math.round(new Date() / 1000) < video_data.premiere_timestamp) { player.getChild('bigPlayButton').hide(); } if (video_data.params.autoplay) { var bpb = player.getChild('bigPlayButton'); bpb.hide(); player.ready(function () { new Promise(function (resolve, reject) { setTimeout(() => resolve(1), 1); }).then(function (result) { var promise = player.play(); if (promise !== undefined) { promise.then(_ => { }).catch(error => { bpb.show(); }); } }); }); } if (!video_data.params.listen && video_data.params.quality === 'dash') { player.httpSourceSelector(); if (video_data.params.quality_dash != "auto") { player.ready(() => { player.on("loadedmetadata", () => { const qualityLevels = Array.from(player.qualityLevels()).sort((a, b) => a.height - b.height); let targetQualityLevel; switch (video_data.params.quality_dash) { case "best": targetQualityLevel = qualityLevels.length - 1; break; case "worst": targetQualityLevel = 0; break; default: const targetHeight = Number.parseInt(video_data.params.quality_dash, 10); for (let i = 0; i < qualityLevels.length; i++) { if (qualityLevels[i].height <= targetHeight) { targetQualityLevel = i; } else { break; } } } for (let i = 0; i < qualityLevels.length; i++) { qualityLevels[i].enabled = (i == targetQualityLevel); } }); }); } } player.vttThumbnails({ src: location.origin + '/api/v1/storyboards/' + video_data.id + '?height=90', showTimestamp: true }); // Enable annotations if (!video_data.params.listen && video_data.params.annotations) { window.addEventListener('load', function (e) { var video_container = document.getElementById('player'); let xhr = new XMLHttpRequest(); xhr.responseType = 'text'; xhr.timeout = 60000; xhr.open('GET', '/api/v1/annotations/' + video_data.id, true); xhr.onreadystatechange = function () { if (xhr.readyState === 4) { if (xhr.status === 200) { videojs.registerPlugin('youtubeAnnotationsPlugin', youtubeAnnotationsPlugin); if (!player.paused()) { player.youtubeAnnotationsPlugin({ annotationXml: xhr.response, videoContainer: video_container }); } else { player.one('play', function (event) { player.youtubeAnnotationsPlugin({ annotationXml: xhr.response, videoContainer: video_container }); }); } } } } window.addEventListener('__ar_annotation_click', e => { const { url, target, seconds } = e.detail; var path = new URL(url); if (path.href.startsWith('https://www.youtube.com/watch?') && seconds) { path.search += '&t=' + seconds; } path = path.pathname + path.search; if (target === 'current') { window.location.href = path; } else if (target === 'new') { window.open(path, '_blank'); } }); xhr.send(); }); } function increase_volume(delta) { const curVolume = player.volume(); let newVolume = curVolume + delta; if (newVolume > 1) { newVolume = 1; } else if (newVolume < 0) { newVolume = 0; } player.volume(newVolume); } function toggle_muted() { const isMuted = player.muted(); player.muted(!isMuted); } function skip_seconds(delta) { const duration = player.duration(); const curTime = player.currentTime(); let newTime = curTime + delta; if (newTime > duration) { newTime = duration; } else if (newTime < 0) { newTime = 0; } player.currentTime(newTime); } function set_time_percent(percent) { const duration = player.duration(); const newTime = duration * (percent / 100); player.currentTime(newTime); } function play() { player.play(); } function pause() { player.pause(); } function stop() { player.pause(); player.currentTime(0); } function toggle_play() { if (player.paused()) { play(); } else { pause(); } } const toggle_captions = (function () { let toggledTrack = null; const onChange = function (e) { toggledTrack = null; }; const bindChange = function (onOrOff) { player.textTracks()[onOrOff]('change', onChange); }; // Wrapper function to ignore our own emitted events and only listen // to events emitted by Video.js on click on the captions menu items. const setMode = function (track, mode) { bindChange('off'); track.mode = mode; window.setTimeout(function () { bindChange('on'); }, 0); }; bindChange('on'); return function () { if (toggledTrack !== null) { if (toggledTrack.mode !== 'showing') { setMode(toggledTrack, 'showing'); } else { setMode(toggledTrack, 'disabled'); } toggledTrack = null; return; } // Used as a fallback if no captions are currently active. // TODO: Make this more intelligent by e.g. relying on browser language. let fallbackCaptionsTrack = null; const tracks = player.textTracks(); for (let i = 0; i < tracks.length; i++) { const track = tracks[i]; if (track.kind !== 'captions') { continue; } if (fallbackCaptionsTrack === null) { fallbackCaptionsTrack = track; } if (track.mode === 'showing') { setMode(track, 'disabled'); toggledTrack = track; return; } } // Fallback if no captions are currently active. if (fallbackCaptionsTrack !== null) { setMode(fallbackCaptionsTrack, 'showing'); toggledTrack = fallbackCaptionsTrack; } }; })(); function toggle_fullscreen() { if (player.isFullscreen()) { player.exitFullscreen(); } else { player.requestFullscreen(); } } function increase_playback_rate(steps) { const maxIndex = options.playbackRates.length - 1; const curIndex = options.playbackRates.indexOf(player.playbackRate()); let newIndex = curIndex + steps; if (newIndex > maxIndex) { newIndex = maxIndex; } else if (newIndex < 0) { newIndex = 0; } player.playbackRate(options.playbackRates[newIndex]); } window.addEventListener('keydown', e => { if (e.target.tagName.toLowerCase() === 'input') { // Ignore input when focus is on certain elements, e.g. form fields. return; } // See https://github.com/ctd1500/videojs-hotkeys/blob/bb4a158b2e214ccab87c2e7b95f42bc45c6bfd87/videojs.hotkeys.js#L310-L313 const isPlayerFocused = false || e.target === document.querySelector('.video-js') || e.target === document.querySelector('.vjs-tech') || e.target === document.querySelector('.iframeblocker') || e.target === document.querySelector('.vjs-control-bar') ; let action = null; const code = e.keyCode; const decoratedKey = e.key + (e.altKey ? '+alt' : '') + (e.ctrlKey ? '+ctrl' : '') + (e.metaKey ? '+meta' : '') ; switch (decoratedKey) { case ' ': case 'k': case 'MediaPlayPause': action = toggle_play; break; case 'MediaPlay': action = play; break; case 'MediaPause': action = pause; break; case 'MediaStop': action = stop; break; case 'ArrowUp': if (isPlayerFocused) { action = increase_volume.bind(this, 0.1); } break; case 'ArrowDown': if (isPlayerFocused) { action = increase_volume.bind(this, -0.1); } break; case 'm': action = toggle_muted; break; case 'ArrowRight': case 'MediaFastForward': action = skip_seconds.bind(this, 5); break; case 'ArrowLeft': case 'MediaTrackPrevious': action = skip_seconds.bind(this, -5); break; case 'l': action = skip_seconds.bind(this, 10); break; case 'j': action = skip_seconds.bind(this, -10); break; case '0': case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': const percent = (code - 48) * 10; action = set_time_percent.bind(this, percent); break; case 'c': action = toggle_captions; break; case 'f': action = toggle_fullscreen; break; case 'N': case 'MediaTrackNext': action = next_video; break; case 'P': case 'MediaTrackPrevious': // TODO: Add support to play back previous video. break; case '.': // TODO: Add support for next-frame-stepping. break; case ',': // TODO: Add support for previous-frame-stepping. break; case '>': action = increase_playback_rate.bind(this, 1); break; case '<': action = increase_playback_rate.bind(this, -1); break; default: console.info('Unhandled key down event: %s:', decoratedKey, e); break; } if (action) { e.preventDefault(); action(); } }, false); // Add support for controlling the player volume by scrolling over it. Adapted from // https://github.com/ctd1500/videojs-hotkeys/blob/bb4a158b2e214ccab87c2e7b95f42bc45c6bfd87/videojs.hotkeys.js#L292-L328 (function () { const volumeStep = 0.05; const enableVolumeScroll = true; const enableHoverScroll = true; const doc = document; const pEl = document.getElementById('player'); var volumeHover = false; var volumeSelector = pEl.querySelector('.vjs-volume-menu-button') || pEl.querySelector('.vjs-volume-panel'); if (volumeSelector != null) { volumeSelector.onmouseover = function () { volumeHover = true; }; volumeSelector.onmouseout = function () { volumeHover = false; }; } var mouseScroll = function mouseScroll(event) { var activeEl = doc.activeElement; if (enableHoverScroll) { // If we leave this undefined then it can match non-existent elements below activeEl = 0; } // When controls are disabled, hotkeys will be disabled as well if (player.controls()) { if (volumeHover) { if (enableVolumeScroll) { event = window.event || event; var delta = Math.max(-1, Math.min(1, (event.wheelDelta || -event.detail))); event.preventDefault(); if (delta == 1) { increase_volume(volumeStep); } else if (delta == -1) { increase_volume(-volumeStep); } } } } }; player.on('mousewheel', mouseScroll); player.on("DOMMouseScroll", mouseScroll); }()); // Since videojs-share can sometimes be blocked, we defer it until last if (player.share) { player.share(shareOptions); }