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7/5/2024
// ==UserScript==
// @name YouTube Live: Manual Fine Tune Video Time
// @namespace UserScripts
// @match https://www.youtube.com/*
// @grant none
// @version 0.1.2
// @author CY Fung
// @description 7/5/2024
// @run-at document-start
// @license MIT
//
// ==/UserScript==
(() => {
let byPassPlaybackRate = false;
let tmpPlaybackRate = null;
let byPassPlaybackRates = null; // [0.25, 0.5, 0.75, 1, 1.25, 1.5, 1.75, 2]
if (typeof AbortSignal === 'undefined') return;
let __requestAnimationFrame__ = typeof webkitRequestAnimationFrame === 'function' ? window.webkitRequestAnimationFrame.bind(window) : window.requestAnimationFrame.bind(window);
let instance = null;
/** @type {globalThis.PromiseConstructor} */
const Promise = (async () => { })().constructor; // YouTube hacks Promise in WaterFox Classic and "Promise.resolve(0)" nevers resolve.
const PromiseExternal = ((resolve_, reject_) => {
const h = (resolve, reject) => { resolve_ = resolve; reject_ = reject };
return class PromiseExternal extends Promise {
constructor(cb = h) {
super(cb);
if (cb === h) {
/** @type {(value: any) => void} */
this.resolve = resolve_;
/** @type {(reason?: any) => void} */
this.reject = reject_;
}
}
};
})();
const observablePromise = (proc, timeoutPromise) => {
let promise = null;
return {
obtain() {
if (!promise) {
promise = new Promise(resolve => {
let mo = null;
const f = () => {
let t = proc();
if (t) {
mo.disconnect();
mo.takeRecords();
mo = null;
resolve(t);
}
}
mo = new MutationObserver(f);
mo.observe(document, { subtree: true, childList: true })
f();
timeoutPromise && timeoutPromise.then(() => {
resolve(null)
});
});
}
return promise
}
}
}
let fc = 0;
const pd = Object.getOwnPropertyDescriptor(HTMLMediaElement.prototype, 'playbackRate');
const isPassiveArgSupport = (typeof IntersectionObserver === 'function');
const bubblePassive = isPassiveArgSupport ? { capture: false, passive: true } : false;
const capturePassive = isPassiveArgSupport ? { capture: true, passive: true } : true;
const insp = o => o ? (o.polymerController || o.inst || o || 0) : (o || 0);
let pageFetchedDataLocal = null;
document.addEventListener('yt-page-data-fetched', (evt) => {
pageFetchedDataLocal = evt.detail;
}, bubblePassive);
function getFormatDates() {
if (!pageFetchedDataLocal) return null;
const formatDates = {}
try {
formatDates.publishDate = pageFetchedDataLocal.pageData.playerResponse.microformat.playerMicroformatRenderer.publishDate
} catch (e) { }
// 2022-12-30
try {
formatDates.uploadDate = pageFetchedDataLocal.pageData.playerResponse.microformat.playerMicroformatRenderer.uploadDate
} catch (e) { }
// 2022-12-30
try {
formatDates.publishDate2 = pageFetchedDataLocal.pageData.response.contents.twoColumnWatchNextResults.results.results.contents[0].videoPrimaryInfoRenderer.dateText.simpleText
} catch (e) { }
// 2022/12/31
if (typeof formatDates.publishDate2 === 'string' && formatDates.publishDate2 !== formatDates.publishDate) {
formatDates.publishDate = formatDates.publishDate2
formatDates.uploadDate = null
}
try {
formatDates.broadcastBeginAt = pageFetchedDataLocal.pageData.playerResponse.microformat.playerMicroformatRenderer.liveBroadcastDetails.startTimestamp
} catch (e) { }
try {
formatDates.broadcastEndAt = pageFetchedDataLocal.pageData.playerResponse.microformat.playerMicroformatRenderer.liveBroadcastDetails.endTimestamp
} catch (e) { }
try {
formatDates.isLiveNow = pageFetchedDataLocal.pageData.playerResponse.microformat.playerMicroformatRenderer.liveBroadcastDetails.isLiveNow
} catch (e) { }
return formatDates;
}
const promiseVideoNextFn = async (video, v) => {
if (typeof video.requestVideoFrameCallback === 'function' && v !== false) {
return true === await Promise.race([
new Promise(resolve => video.requestVideoFrameCallback(() => {
resolve(true);
})),
new Promise(resolve => setTimeout(resolve, 1000))
]);
} else {
return true === await Promise.race([
new Promise(resolve => video.addEventListener('timeupdate', () => {
resolve(true);
}, { once: true, passive: true, capture: false })),
new Promise(resolve => setTimeout(resolve, 1000))
]);
}
}
let videoTarget = null;
let lastVideoId = null;
let videoOK = false;
const updateVideo = () => {
videoOK = false;
do {
if (!videoTarget) break;
if (!pageFetchedDataLocal) break;
const dates = getFormatDates();
if (!dates) break;
if (dates.broadcastBeginAt && !dates.broadcastEndAt && dates.isLiveNow === true) {
videoOK = true;
} else {
break;
}
} while (0);
if (!videoOK) {
return;
}
const flexy = document.querySelector('ytd-watch-flexy');
const videoId = flexy.getAttribute('video-id')
if (lastVideoId !== videoId) {
lastVideoId = videoId;
run(videoTarget).then(res => {
if (res === false) lastVideoId = null;
});
}
}
document.addEventListener('durationchange', function (evt) {
const target = (evt || 0).target;
if (!(target instanceof HTMLVideoElement)) return;
if (target.classList.contains('video-stream') && target.classList.contains('html5-main-video')) {
videoTarget = target;
if (target.duration !== 3600 && target.duration > 120) {
updateVideo();
}
}
}, true);
let liveVideo = null;
async function run(videoTarget) {
try {
if (fc > 1e9) fc = 9;
let tc = ++fc;
const timeout = new Promise(r => setTimeout(r, 1000));
const video = videoTarget;
// const video = watchPage.querySelector('video.video-stream.html5-main-video');
if (!video) return false;
const fn = () => {
if (video.paused || !video.isConnected || video.networkState !== 2 || video.readyState !== 4) return false;
return video.currentTime > 0.1 && video.duration > 0.1 && instance;
}
if (!fn()) {
await observablePromise(fn, timeout).obtain();
}
if (tc !== fc) return false;
await new Promise(resolve => video.addEventListener('timeupdate', () => {
resolve();
}, { once: true, passive: true, capture: false }));
if (tc !== fc) return false;
if (!instance || instance.getPlayerState() !== 1) return false;
liveVideo = video;
} catch (e) {
console.log(e)
}
}
let nnId = 0;
document.addEventListener('yt-navigate-finish', () => {
const t = ++nnId;
setTimeout(() => {
if (t !== nnId) return;
if ([...document.querySelectorAll('ytd-page-manager#page-manager #movie_player .html5-main-video[src]')].filter(e => !e.closest('[hidden]')).length === 1) {
updateVideo();
}
}, 800);
}, false);
const _yt_player_observable = observablePromise(() => {
return (((window || 0)._yt_player || 0) || 0);
});
(async () => {
const _yt_player = await _yt_player_observable.obtain();
if (!_yt_player || typeof _yt_player !== 'object') return;
const addProtoToArr = (parent, key, arr) => {
let isChildProto = false;
for (const sr of arr) {
if (parent[key].prototype instanceof parent[sr]) {
isChildProto = true;
break;
}
}
if (isChildProto) return;
arr = arr.filter(sr => {
if (parent[sr].prototype instanceof parent[key]) {
return false;
}
return true;
});
arr.push(key);
return arr;
}
const getGU = (_yt_player) => {
const w = 'GU';
let arr = [];
for (const [k, v] of Object.entries(_yt_player)) {
const p = typeof v === 'function' ? v.prototype : 0;
if (p.getPlaybackRate && p.setPlaybackRate) {
console.log(p.setPlaybackRate?.length, p.getPlaybackRate?.length, p.getVideoUrl?.length, p.getCurrentTime?.length, p.getDuration?.length)
}
if (p
&& typeof p.setPlaybackRate === 'function' && p.setPlaybackRate.length === 2
&& typeof p.getPlaybackRate === 'function' && p.getPlaybackRate.length === 0
// && typeof p.isAtLiveHead === 'function'
&& typeof p.getVideoUrl === 'function' && p.getVideoUrl.length === 4
&& typeof p.getCurrentTime === 'function' && p.getCurrentTime.length >= 2
&& typeof p.getDuration === 'function' && p.getDuration.length == 2
) {
arr = addProtoToArr(_yt_player, k, arr) || arr;
}
}
/**
*
g.k.getCurrentTime = function(a, b, c) {
var d = this.getPlayerState(a);
if (this.app.getAppState() === 2 && d === 5) {
var e;
return ((e = this.app.getVideoData()) == null ? void 0 : e.startSeconds) || 0
}
return this.L("web_player_max_seekable_on_ended") && d === 0 ? zhb(this.app, a) : a ? this.app.getCurrentTime(a, b, c) : this.app.getCurrentTime(a)
}
*
*/
// console.log(1222, arr.map(k=> Object.keys(_yt_player[k].prototype).sort()))
if (arr.length === 0) {
console.warn(`Key does not exist. [${w}]`);
} else {
console.log(`[${w}]`, arr);
return arr[0];
}
}
const key = getGU(_yt_player);
// console.log(1233, key)
const g = _yt_player;
const k = key;
const gk = g[k];
const gkp = g[k].prototype;
gkp.getPlaybackRate322 = gkp.getPlaybackRate;
gkp.getPlaybackRate = function () {
// console.log(5556, this.getPlaybackRate322)
instance = this;
return this.getPlaybackRate322();
}
gkp.setPlaybackRate322 = gkp.setPlaybackRate;
gkp.setPlaybackRate = function (a, b) {
instance = this;
if (byPassPlaybackRate) {
// console.log(5888, 12333,a, b)
// return;
}
// console.log(5388, arguments)
return this.setPlaybackRate322(a, b);
}
if (typeof gkp.getAvailablePlaybackRates === 'function' && typeof gkp.getAvailablePlaybackRates322 !== 'function') {
gkp.getAvailablePlaybackRates322 = gkp.getAvailablePlaybackRates;
gkp.getAvailablePlaybackRates = function () {
instance = this;
if (byPassPlaybackRates) {
// console.log(5888, 12333,a, b)
return byPassPlaybackRates;
}
// console.log(5388, arguments)
return this.getAvailablePlaybackRates322();
}
//[0.25, 0.5, 0.75, 1, 1.25, 1.5, 1.75, 2]
}
})();
Storage.prototype.setItem322 = Storage.prototype.setItem;
Storage.prototype.setItem = function (a, b) {
if (a === 'yt-player-playback-rate') {
tmpPlaybackRate = b;
// if(!byPassPlaybackRate) debugger
if (promisePR1 && b && typeof b === 'string' && b.indexOf('{"data":"1"') >= 0) {
promisePR1.resolve();
promisePR1 = null;
}
// console.log(5883, a, b,byPassPlaybackRate, 'XX_'+tmpPlaybackRate+'_', location.pathname)
if (window.location.pathname === '/live_chat') return;
}
if (byPassPlaybackRate && a === 'yt-player-playback-rate') return;
this.setItem322(a, b);
}
Storage.prototype.getItem322 = Storage.prototype.getItem;
Storage.prototype.getItem = function (a) {
if (a === 'yt-player-playback-rate') {
if (window.location.pathname === '/live_chat') return null;
if (typeof tmpPlaybackRate === 'string') return tmpPlaybackRate;
}
if (a === 'yt-player-playback-rate' && typeof tmpPlaybackRate === 'string') return tmpPlaybackRate;
return this.getItem322(a);
}
Object.defineProperty(Storage.prototype, 'yt-player-playback-rate', {
get() {
return this.getItem('yt-player-playback-rate');
},
set(nv) {
this.setItem('yt-player-playback-rate', nv);
return true;
},
enumerable: true,
configurable: true
});
let onKey = false;
let lrRates = null;
const lrRatesSetup = () => {
if (lrRates || !instance) return;
const rates = instance.getAvailablePlaybackRates();
lrRates = [Math.max(...rates.filter(r => r < 1)), Math.min(...rates.filter(r => r > 1))];
}
const setRate = (r) => {
instance && instance.setPlaybackRate(r, r)
}
const filterSet = (b) => {
if (!liveVideo) return;
b ? (liveVideo.style.filter = 'contrast(0.5)') : (liveVideo.style.filter = '')
}
const targetOK = (target) => {
if (!target || target instanceof Document) return true;
if (target instanceof HTMLInputElement || target instanceof HTMLTextAreaElement) return false;
if (target instanceof Element && target.closest('[contenteditable]') instanceof Node) return false;
return true;
}
document.addEventListener('keydown', evt => {
if (evt.code === 'ArrowLeft' && videoOK && instance && !onKey && liveVideo && !liveVideo.paused && targetOK(evt.target)) {
if (!onKey) {
onKey = 'left'
console.log('left')
lrRatesSetup();
setRate(lrRates[0]);
filterSet(1)
}
// evt.preventDefault();
evt.stopImmediatePropagation();
evt.stopPropagation();
} else if (evt.code === 'ArrowRight' && videoOK && instance && liveVideo && !liveVideo.paused && targetOK(evt.target)) {
if (!onKey) {
onKey = 'right'
console.log('right')
lrRatesSetup();
setRate(lrRates[1]);
filterSet(1)
}
// evt.preventDefault();
evt.stopImmediatePropagation();
evt.stopPropagation();
}
}, true);
document.addEventListener('keyup', evt => {
if (evt.code === 'ArrowLeft' && videoOK && instance && onKey === 'left') {
console.log('left end')
// evt.preventDefault();
evt.stopImmediatePropagation();
evt.stopPropagation();
setRate(1);
filterSet(0)
} else if (evt.code === 'ArrowRight' && videoOK && instance && onKey === 'right') {
console.log('right end')
// evt.preventDefault();
evt.stopImmediatePropagation();
evt.stopPropagation();
setRate(1);
filterSet(0)
}
onKey = false;
}, true);
})();