// ==UserScript==// @name                Use YouTube AV1// @description         Use AV1 for video playback on YouTube// @name:zh-TW          使用 YouTube AV1// @description:zh-TW   使用 AV1 進行 YouTube 影片播放// @name:zh-HK          使用 YouTube AV1// @description:zh-HK   使用 AV1 進行 YouTube 影片播放// @name:zh-CN          使用 YouTube AV1// @description:zh-CN   使用 AV1 进行 YouTube 视频播放// @name:ja             YouTube AV1 の使用// @description:ja      YouTube の動画再生に AV1 を使用する// @name:ko             YouTube AV1 사용// @description:ko      YouTube의 동영상 재생에 AV1을 사용하기// @name:vi             Sử dụng YouTube AV1// @description:vi      Sử dụng AV1 để phát video trên YouTube// @name:de             YouTube AV1 verwenden// @description:de      Verwende AV1 für die Videowiedergabe auf YouTube// @name:fr             Utiliser YouTube AV1// @description:fr      Utiliser AV1 pour la lecture des vidéos sur YouTube// @name:it             Usa YouTube AV1// @description:it      Usa AV1 per la riproduzione dei video su YouTube// @name:es             Usar AV1 en YouTube// @description:es      Usar AV1 para la reproducción de videos en YouTube// @namespace           http://tampermonkey.net/// @version             2.4.3// @author              CY Fung// @match               https://www.youtube.com/*// @match               https://www.youtube.com/embed/*// @match               https://www.youtube-nocookie.com/embed/*// @exclude             https://www.youtube.com/live_chat*// @exclude             https://www.youtube.com/live_chat_replay*// @exclude             /^https?://\S+\.(txt|png|jpg|jpeg|gif|xml|svg|manifest|log|ini)[^\/]*$/// @icon                https://www.google.com/s2/favicons?sz=64&domain=youtube.com// @grant               none// @run-at              document-start// @license             MIT//// @compatible          firefox Violentmonkey// @compatible          firefox Tampermonkey// @compatible          firefox FireMonkey// @compatible          chrome Violentmonkey// @compatible          chrome Tampermonkey// @compatible          opera Violentmonkey// @compatible          opera Tampermonkey// @compatible          safari Stay// @compatible          edge Violentmonkey// @compatible          edge Tampermonkey// @compatible          brave Violentmonkey// @compatible          brave Tampermonkey//// @unwrap// @allFrames           true// @inject-into         page// ==/UserScript==(function (__Promise__) {'use strict';/** @type {globalThis.PromiseConstructor} */const Promise = (async () => { })().constructor; // YouTube hacks Promise in WaterFox Classic and "Promise.resolve(0)" nevers resolve.console.debug("force-youtube-av1", "injected");const flagConfig = () => {let firstDa = true;let cid = 0;const { setInterval, clearInterval, setTimeout } = window;const tn = () => {const da = (window.ytcfg && window.ytcfg.data_) ? window.ytcfg.data_ : null;if (!da) return;const isFirstDa = firstDa;firstDa = false;for (const EXPERIMENT_FLAGS of [da.EXPERIMENT_FLAGS, da.EXPERIMENTS_FORCED_FLAGS]) {if (EXPERIMENT_FLAGS) {// EXPERIMENT_FLAGS.html5_disable_av1_hdr = false;// EXPERIMENT_FLAGS.html5_prefer_hbr_vp9_over_av1 = false;// EXPERIMENT_FLAGS.html5_account_onesie_format_selection_during_format_filter = false;}}if (isFirstDa) {let mo = new MutationObserver(() => {mo.disconnect();mo.takeRecords();mo = null;setTimeout(() => {cid && clearInterval.call(window, cid);cid = 0;tn();})});mo.observe(document, { subtree: true, childList: true });}};cid = setInterval.call(window, tn);};const supportedFormatsConfig = () => {function typeTest(type) {if (typeof type === 'string' && type.startsWith('video/')) {if (type.includes('av01')) {if (/codecs[\x20-\x7F]+\bav01\b/.test(type)) return true;} else if (type.includes('av1')) {if (/codecs[\x20-\x7F]+\bav1\b/.test(type)) return true;}}}// return a custom MIME type checker that can defer to the original functionfunction makeModifiedTypeChecker(origChecker, dx) {// Check if a video type is allowedreturn function (type) {let res = undefined;if (type === undefined) res = false;else res = typeTest(type);if (res === undefined) res = origChecker.apply(this, arguments);else res = !dx ? res : (res ? "probably" : "");// console.debug(20, type, res)return res;};}// Override video element canPlayType() functionconst proto = (HTMLVideoElement || 0).prototype;if (proto && typeof proto.canPlayType == 'function') {proto.canPlayType = makeModifiedTypeChecker(proto.canPlayType, true);}// Override media source extension isTyp###pported() functionconst mse = window.MediaSource;// Check for MSE support before useif (mse && typeof mse.isTyp###pported == 'function') {mse.isTyp###pported = makeModifiedTypeChecker(mse.isTyp###pported);}}function enableAV1() {// This is the setting to force AV1// localStorage['yt-player-av1-pref'] = '8192';try {Object.defineProperty(localStorage.constructor.prototype, 'yt-player-av1-pref', {get() {if (this === localStorage) return '8192';return this.getItem('yt-player-av1-pref');},set(nv) {this.setItem('yt-player-av1-pref', nv);return true;},enumerable: true,configurable: true});} catch (e) {// localStorage['yt-player-av1-pref'] = '8192';}if (localStorage['yt-player-av1-pref'] !== '8192') {console.warn('Use YouTube AV1 is not supported in your browser.');return;}console.debug("force-youtube-av1", "AV1 enabled");// flagConfig();supportedFormatsConfig();}let promise = null;try {promise = navigator.mediaCapabilities.decodingInfo({type: "file",video: {contentType: "video/mp4; codecs=av01.0.05M.08.0.110.05.01.06.0",height: 1080,width: 1920,framerate: 30,bitrate: 2826848,},audio: {contentType: "audio/webm; codecs=opus",channels: "2.1",samplerate: 44100,bitrate: 255236,}});} catch (e) {promise = null;}const callback = (r###lt) => {if (r###lt && r###lt.supported && r###lt.smooth) enableAV1();else {console.warn("force-youtube-av1", 'Your browser does not support AV1. You might conside to use the latest version of Google Chrome or Mozilla FireFox.');}};(promise || Promise.resolve(0)).catch(callback).then(callback);})(Promise);