invidious/assets/js/player.js

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JavaScript
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'use strict';
var player_data = JSON.parse(document.getElementById('player_data').textContent);
var video_data = JSON.parse(document.getElementById('video_data').textContent);
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var options = {
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preload: 'auto',
liveui: true,
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playbackRates: [0.25, 0.5, 0.75, 1.0, 1.25, 1.5, 1.75, 2.0],
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controlBar: {
children: [
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'playToggle',
'volumePanel',
'currentTimeDisplay',
'timeDivider',
'durationDisplay',
'progressControl',
'remainingTimeDisplay',
'Spacer',
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'captionsButton',
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'audioTrackButton',
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'qualitySelector',
'playbackRateMenuButton',
'fullscreenToggle'
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]
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},
html5: {
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preloadTextTracks: false,
vhs: {
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overrideNative: true
}
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}
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};
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if (player_data.aspect_ratio) {
options.aspectRatio = player_data.aspect_ratio;
}
var embed_url = new URL(location);
embed_url.searchParams.delete('v');
var short_url = location.origin + '/' + video_data.id + embed_url.search;
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embed_url = location.origin + '/embed/' + video_data.id + embed_url.search;
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var save_player_pos_key = 'save_player_pos';
videojs.Vhs.xhr.beforeRequest = function(options) {
// set local if requested not videoplayback
if (!options.uri.includes('videoplayback')) {
if (!options.uri.includes('local=true'))
options.uri += '?local=true';
}
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return options;
};
var player = videojs('player', options);
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player.on('error', function () {
if (video_data.params.quality === 'dash') return;
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var localNotDisabled = (
!player.currentSrc().includes('local=true') && !video_data.local_disabled
);
var reloadMakesSense = (
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player.error().code === MediaError.MEDIA_ERR_NETWORK ||
player.error().code === MediaError.MEDIA_ERR_SRC_NOT_SUPPORTED
);
if (localNotDisabled) {
// add local=true to all current sources
player.src(player.currentSources().map(function (source) {
source.src += '&local=true';
return source;
}));
} else if (reloadMakesSense) {
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setTimeout(function () {
console.warn('An error occurred in the player, reloading...');
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// After load() all parameters are reset. Save them
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();
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}, 5000);
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}
});
if (video_data.params.quality === 'dash') {
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player.reloadSourceOnError({
errorInterval: 10
});
}
/**
* Function for add time argument to url
* @param {String} url
* @returns {URL} urlWithTimeArg
*/
function addCurrentTimeToURL(url) {
var urlUsed = new URL(url);
urlUsed.searchParams.delete('start');
var currentTime = Math.ceil(player.currentTime());
if (currentTime > 0)
urlUsed.searchParams.set('t', currentTime);
else if (urlUsed.searchParams.has('t'))
urlUsed.searchParams.delete('t');
return urlUsed;
}
var shareOptions = {
socials: ['fbFeed', 'tw', 'reddit', 'email'],
get url() {
return addCurrentTimeToURL(short_url);
},
title: player_data.title,
description: player_data.description,
image: player_data.thumbnail,
get embedCode() {
// Single quotes inside here required. HTML inserted as is into value attribute of input
return "<iframe id='ivplayer' width='640' height='360' src='" +
addCurrentTimeToURL(embed_url) + "' style='border:none;'></iframe>";
}
};
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if (location.pathname.startsWith('/embed/')) {
var overlay_content = '<h1><a rel="noopener" target="_blank" href="' + location.origin + '/watch?v=' + video_data.id + '">' + player_data.title + '</a></h1>';
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player.overlay({
overlays: [
{ start: 'loadstart', content: overlay_content, end: 'playing', align: 'top'},
{ start: 'pause', content: overlay_content, end: 'playing', align: 'top'}
]
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});
}
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// Detect mobile users and initialize mobileUi for better UX
// Detection code taken from https://stackoverflow.com/a/20293441
function isMobile() {
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try{ document.createEvent('TouchEvent'); return true; }
catch(e){ return false; }
}
if (isMobile()) {
player.mobileUi({ touchControls: { seekSeconds: 5 * player.playbackRate() } });
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var buttons = ['playToggle', 'volumePanel', 'captionsButton'];
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if (!video_data.params.listen && video_data.params.quality === 'dash') buttons.push('audioTrackButton');
if (video_data.params.listen || video_data.params.quality !== 'dash') buttons.push('qualitySelector');
// Create new control bar object for operation buttons
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const ControlBar = videojs.getComponent('controlBar');
let operations_bar = new ControlBar(player, {
children: [],
playbackRates: [0.25, 0.5, 0.75, 1.0, 1.25, 1.5, 1.75, 2.0]
});
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buttons.slice(1).forEach(function (child) {operations_bar.addChild(child);});
// Remove operation buttons from primary control bar
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var primary_control_bar = player.getChild('controlBar');
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buttons.forEach(function (child) {primary_control_bar.removeChild(child);});
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var operations_bar_element = operations_bar.el();
operations_bar_element.classList.add('mobile-operations-bar');
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player.addChild(operations_bar);
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// Playback menu doesn't work when it's initialized outside of the primary control bar
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var playback_element = document.getElementsByClassName('vjs-playback-rate')[0];
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operations_bar_element.append(playback_element);
// The share and http source selector element can't be fetched till the players ready.
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player.one('playing', function () {
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var share_element = document.getElementsByClassName('vjs-share-control')[0];
operations_bar_element.append(share_element);
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if (!video_data.params.listen && video_data.params.quality === 'dash') {
var http_source_selector = document.getElementsByClassName('vjs-http-source-selector vjs-menu-button')[0];
operations_bar_element.append(http_source_selector);
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}
});
}
// Enable VR video support
if (!video_data.params.listen && video_data.vr && video_data.params.vr_mode) {
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player.crossOrigin('anonymous');
switch (video_data.projection_type) {
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case 'EQUIRECTANGULAR':
player.vr({projection: 'equirectangular'});
default: // Should only be 'MESH' but we'll use this as a fallback.
player.vr({projection: 'EAC'});
}
}
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// 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')
player.loop() ? player.markers.prev('Start') : player.pause();
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},
markers: markers
});
player.currentTime(video_data.params.video_start);
}
player.volume(video_data.params.volume / 100);
player.playbackRate(video_data.params.speed);
/**
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* Method for getting the contents of a cookie
*
* @param {String} name Name of cookie
* @returns {String|null} cookieValue
*/
function getCookieValue(name) {
var cookiePrefix = name + '=';
var matchedCookie = document.cookie.split(';').find(function (item) {return item.includes(cookiePrefix);});
if (matchedCookie)
return matchedCookie.replace(cookiePrefix, '');
return null;
}
/**
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* Method for updating the 'PREFS' cookie (or creating it if missing)
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*
* @param {number} newVolume New volume defined (null if unchanged)
* @param {number} newSpeed New speed defined (null if unchanged)
*/
function updateCookie(newVolume, newSpeed) {
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var volumeValue = newVolume !== null ? newVolume : video_data.params.volume;
var speedValue = newSpeed !== null ? newSpeed : video_data.params.speed;
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var cookieValue = getCookieValue('PREFS');
var cookieData;
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if (cookieValue !== null) {
var cookieJson = JSON.parse(decodeURIComponent(cookieValue));
cookieJson.volume = volumeValue;
cookieJson.speed = speedValue;
cookieData = encodeURIComponent(JSON.stringify(cookieJson));
} else {
cookieData = encodeURIComponent(JSON.stringify({ 'volume': volumeValue, 'speed': speedValue }));
}
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// Set expiration in 2 year
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var date = new Date();
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date.setFullYear(date.getFullYear() + 2);
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var ipRegex = /^((\d+\.){3}\d+|[\dA-Fa-f]*:[\d:A-Fa-f]*:[\d:A-Fa-f]+)$/;
var domainUsed = location.hostname;
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// Fix for a bug in FF where the leading dot in the FQDN is not ignored
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if (domainUsed.charAt(0) !== '.' && !ipRegex.test(domainUsed) && domainUsed !== 'localhost')
domainUsed = '.' + location.hostname;
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var secure = location.protocol.startsWith("https") ? " Secure;" : "";
document.cookie = 'PREFS=' + cookieData + '; SameSite=Lax; path=/; domain=' +
domainUsed + '; expires=' + date.toGMTString() + ';' + secure;
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video_data.params.volume = volumeValue;
video_data.params.speed = speedValue;
}
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player.on('ratechange', function () {
updateCookie(null, player.playbackRate());
if (isMobile()) {
player.mobileUi({ touchControls: { seekSeconds: 5 * player.playbackRate() } });
}
});
player.on('volumechange', function () {
updateCookie(Math.ceil(player.volume() * 100), null);
});
player.on('waiting', function () {
if (player.playbackRate() > 1 && player.liveTracker.isLive() && player.liveTracker.atLiveEdge()) {
console.info('Player has caught up to source, resetting playbackRate');
player.playbackRate(1);
}
});
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if (video_data.premiere_timestamp && Math.round(new Date() / 1000) < video_data.premiere_timestamp) {
player.getChild('bigPlayButton').hide();
}
if (video_data.params.save_player_pos) {
const url = new URL(location);
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const hasTimeParam = url.searchParams.has('t');
const rememberedTime = get_video_time();
let lastUpdated = 0;
if(!hasTimeParam) set_seconds_after_start(rememberedTime);
player.on('timeupdate', function () {
const raw = player.currentTime();
const time = Math.floor(raw);
if(lastUpdated !== time && raw <= video_data.length_seconds - 15) {
save_video_time(time);
lastUpdated = time;
}
});
}
else remove_all_video_times();
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if (video_data.params.autoplay) {
var bpb = player.getChild('bigPlayButton');
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bpb.hide();
player.ready(function () {
new Promise(function (resolve, reject) {
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setTimeout(function () {resolve(1);}, 1);
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}).then(function (result) {
var promise = player.play();
if (promise !== undefined) {
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promise.then(function () {
}).catch(function (error) {
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bpb.show();
});
}
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});
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});
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}
if (!video_data.params.listen && video_data.params.quality === 'dash') {
player.httpSourceSelector();
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if (video_data.params.quality_dash !== 'auto') {
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player.ready(function () {
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player.on('loadedmetadata', function () {
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const qualityLevels = Array.from(player.qualityLevels()).sort(function (a, b) {return a.height - b.height;});
let targetQualityLevel;
switch (video_data.params.quality_dash) {
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case 'best':
targetQualityLevel = qualityLevels.length - 1;
break;
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case 'worst':
targetQualityLevel = 0;
break;
default:
const targetHeight = parseInt(video_data.params.quality_dash);
for (let i = 0; i < qualityLevels.length; i++) {
if (qualityLevels[i].height <= targetHeight)
targetQualityLevel = i;
else
break;
}
}
qualityLevels.forEach(function (level, index) {
level.enabled = (index === targetQualityLevel);
});
});
});
}
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}
player.vttThumbnails({
src: '/api/v1/storyboards/' + video_data.id + '?height=90',
showTimestamp: true
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});
// Enable annotations
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if (!video_data.params.listen && video_data.params.annotations) {
addEventListener('load', function (e) {
addEventListener('__ar_annotation_click', function (e) {
const url = e.detail.url,
target = e.detail.target,
seconds = e.detail.seconds;
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var path = new URL(url);
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if (path.href.startsWith('https://www.youtube.com/watch?') && seconds) {
path.search += '&t=' + seconds;
}
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path = path.pathname + path.search;
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if (target === 'current') {
location.href = path;
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} else if (target === 'new') {
open(path, '_blank');
}
});
helpers.xhr('GET', '/api/v1/annotations/' + video_data.id, {
responseType: 'text',
timeout: 60000
}, {
on200: function (response) {
var video_container = document.getElementById('player');
videojs.registerPlugin('youtubeAnnotationsPlugin', youtubeAnnotationsPlugin);
if (player.paused()) {
player.one('play', function (event) {
player.youtubeAnnotationsPlugin({ annotationXml: response, videoContainer: video_container });
});
} else {
player.youtubeAnnotationsPlugin({ annotationXml: response, videoContainer: video_container });
}
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}
});
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});
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}
function change_volume(delta) {
const curVolume = player.volume();
let newVolume = curVolume + delta;
newVolume = helpers.clamp(newVolume, 0, 1);
player.volume(newVolume);
}
function toggle_muted() {
player.muted(!player.muted());
}
function skip_seconds(delta) {
const duration = player.duration();
const curTime = player.currentTime();
let newTime = curTime + delta;
newTime = helpers.clamp(newTime, 0, duration);
player.currentTime(newTime);
}
function set_seconds_after_start(delta) {
const start = video_data.params.video_start;
player.currentTime(start + delta);
}
function save_video_time(seconds) {
const all_video_times = get_all_video_times();
all_video_times[video_data.id] = seconds;
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helpers.storage.set(save_player_pos_key, all_video_times);
}
function get_video_time() {
return get_all_video_times()[video_data.id] || 0;
}
function get_all_video_times() {
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return helpers.storage.get(save_player_pos_key) || {};
}
function remove_all_video_times() {
helpers.storage.remove(save_player_pos_key);
}
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() { player.paused() ? play() : pause(); }
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const toggle_captions = (function () {
let toggledTrack = null;
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function bindChange(onOrOff) {
player.textTracks()[onOrOff]('change', function (e) {
toggledTrack = null;
});
}
// Wrapper function to ignore our own emitted events and only listen
// to events emitted by Video.js on click on the captions menu items.
function setMode(track, mode) {
bindChange('off');
track.mode = mode;
setTimeout(function () {
bindChange('on');
}, 0);
}
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bindChange('on');
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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() {
player.isFullscreen() ? player.exitFullscreen() : player.requestFullscreen();
}
function increase_playback_rate(steps) {
const maxIndex = options.playbackRates.length - 1;
const curIndex = options.playbackRates.indexOf(player.playbackRate());
let newIndex = curIndex + steps;
newIndex = helpers.clamp(newIndex, 0, maxIndex);
player.playbackRate(options.playbackRates[newIndex]);
}
addEventListener('keydown', function (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')
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;
let action = null;
const code = e.keyCode;
const decoratedKey =
e.key
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+ (e.altKey ? '+alt' : '')
+ (e.ctrlKey ? '+ctrl' : '')
+ (e.metaKey ? '+meta' : '')
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;
switch (decoratedKey) {
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case ' ':
case 'k':
case 'MediaPlayPause':
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action = toggle_play;
break;
case 'MediaPlay': action = play; break;
case 'MediaPause': action = pause; break;
case 'MediaStop': action = stop; break;
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case 'ArrowUp':
if (isPlayerFocused) action = change_volume.bind(this, 0.1);
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break;
case 'ArrowDown':
if (isPlayerFocused) action = change_volume.bind(this, -0.1);
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break;
case 'm':
action = toggle_muted;
break;
case 'ArrowRight':
case 'MediaFastForward':
action = skip_seconds.bind(this, 5 * player.playbackRate());
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break;
case 'ArrowLeft':
case 'MediaTrackPrevious':
action = skip_seconds.bind(this, -5 * player.playbackRate());
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break;
case 'l':
action = skip_seconds.bind(this, 10 * player.playbackRate());
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break;
case 'j':
action = skip_seconds.bind(this, -10 * player.playbackRate());
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break;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
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// Ignore numpad numbers
if (code > 57) break;
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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;
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case 'N':
case 'MediaTrackNext':
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action = next_video;
break;
case 'P':
case 'MediaTrackPrevious':
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// TODO: Add support to play back previous video.
break;
// TODO: More precise step. Now FPS is taken equal to 29.97
// Common FPS: https://forum.videohelp.com/threads/81868#post323588
// Possible solution is new HTMLVideoElement.requestVideoFrameCallback() https://wicg.github.io/video-rvfc/
case ',': action = function () { pause(); skip_seconds(-1/29.97); }; break;
case '.': action = function () { pause(); skip_seconds( 1/29.97); }; break;
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case '>': action = increase_playback_rate.bind(this, 1); break;
case '<': action = increase_playback_rate.bind(this, -1); break;
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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
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(function () {
const pEl = document.getElementById('player');
var volumeHover = false;
var volumeSelector = pEl.querySelector('.vjs-volume-menu-button') || pEl.querySelector('.vjs-volume-panel');
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if (volumeSelector !== null) {
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volumeSelector.onmouseover = function () { volumeHover = true; };
volumeSelector.onmouseout = function () { volumeHover = false; };
}
function mouseScroll(event) {
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// When controls are disabled, hotkeys will be disabled as well
if (!player.controls() || !volumeHover) return;
event.preventDefault();
var wheelMove = event.wheelDelta || -event.detail;
var volumeSign = Math.sign(wheelMove);
change_volume(volumeSign * 0.05); // decrease/increase by 5%
}
player.on('mousewheel', mouseScroll);
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player.on('DOMMouseScroll', mouseScroll);
}());
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// Since videojs-share can sometimes be blocked, we defer it until last
if (player.share) player.share(shareOptions);
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// show the preferred caption by default
if (player_data.preferred_caption_found) {
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player.ready(function () {
if (!video_data.params.listen && video_data.params.quality === 'dash') {
// play.textTracks()[0] on DASH mode is showing some debug messages
player.textTracks()[1].mode = 'showing';
} else {
player.textTracks()[0].mode = 'showing';
}
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});
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}
// Safari audio double duration fix
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if (navigator.vendor === 'Apple Computer, Inc.' && video_data.params.listen) {
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player.on('loadedmetadata', function () {
player.on('timeupdate', function () {
if (player.remainingTime() < player.duration() / 2 && player.remainingTime() >= 2) {
player.currentTime(player.duration() - 1);
}
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});
});
}
// Safari screen timeout on looped video playback fix
if (navigator.vendor === 'Apple Computer, Inc.' && !video_data.params.listen && video_data.params.video_loop) {
player.loop(false);
player.on('loadedmetadata', function () {
player.on('timeupdate', function () {
if (player.remainingTime() < 2) {
player.loop(true);
setTimeout(() => {
player.loop(false);
}, 2000 / player.playbackRate());
}
});
});
}
// Watch on Invidious link
if (location.pathname.startsWith('/embed/')) {
const Button = videojs.getComponent('Button');
let watch_on_invidious_button = new Button(player);
// Create hyperlink for current instance
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var redirect_element = document.createElement('a');
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redirect_element.setAttribute('href', location.pathname.replace('/embed/', '/watch?v='));
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redirect_element.appendChild(document.createTextNode('Invidious'));
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watch_on_invidious_button.el().appendChild(redirect_element);
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watch_on_invidious_button.addClass('watch-on-invidious');
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var cb = player.getChild('ControlBar');
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cb.addChild(watch_on_invidious_button);
}
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addEventListener('DOMContentLoaded', function () {
// Save time during redirection on another instance
const changeInstanceLink = document.querySelector('#watch-on-another-invidious-instance > a');
if (changeInstanceLink) changeInstanceLink.addEventListener('click', function () {
changeInstanceLink.href = addCurrentTimeToURL(changeInstanceLink.href);
});
});