// ==UserScript==
// @name YouTube Click To Play
// @name:ja YouTube Click To Play
// @name:zh-CN YouTube Click To Play
// @namespace knoa.jp
// @description It disables autoplay and enables click to play.
// @description:ja 自動再生を無効にし、クリックで再生するようにします。
// @description:zh-CN 它禁用自动播放，并启用点击播放。
// @include https://www.youtube.com/*
// @noframes
// @run-at document-start
// @grant none
// @version 1
// ==/UserScript==
(function(){
const SCRIPTID = 'YouTubeClickToPlay';
const SCRIPTNAME = 'YouTube Click To Play';
const DEBUG = false;/*
[update]
[bug]
[todo]
[possible]
channel/ と watch/ は個別に設定可能とか
=> channelだけで動作する別スクリプトがある
document.hidden でのみ作動するオプションとか
0秒で常にサムネに戻る仕様(seekingイベントでよい)
[research]
シアターモードの切り替えで再生してしまう件(そこまで気にしなくてもいい気もする)
t=4 以下で seek 後にサムネイルが消えてしまう問題
たまにぐるぐるが止まらない問題 t 指定とキャッシュに関係ある？
[memo]
本スクリプト仕様:
サムネになってほしい: チャンネルホーム, ビデオページ
再生してほしい: LIVE, 広告, 途中広告からの復帰
要確認: 各ページの行き来, 再生で即停止しないこと, シアターモードの切り替え, 背面タブでの起動
(YouTubeによるあっぱれなユーザー体験の追究のおかげで、初回読み込み時に限り再生開始済みのvideo要素が即出現する)
YouTube仕様:
画面更新(URL Enter, S-Reload, Reload に本質的な差異なし)
新規タブ(開いた直後, 読み込み完了後, title変更後 に本質的な差異なし)
video: body ... video ... loadstart ... で必ず play() されるのでダミーと入れ替えておけばよい。
video要素は #player-api 内に出現した後に ytd-watch-flexy 内に移動する。その際に play() されるようだ。
t=123 のような時刻指定があると seeking 後にもう一度 play() される。
thumbnail は t=4 以下だとなぜか消えてしまう。(seekじゃなくてadvanceだとみなされるせい？)
channel: body ... video ... loadstart で即 pause() 可能。(playは踏まれない)
画面遷移(動画 <=> LIVE <=> チャンネル)
video: yt-navigate-start ... loadstart で即 pause() 可能。(playは踏まれない)
広告
冒頭広告: .ad-showing 依存だが判定できる。
広告明け: 少しだけ泥臭いが、そのURLで一度でも本編が再生されていれば広告明けとみなす。
参考:
Channelトップの動画でのみ機能するスクリプト
https://greasyfork.org/ja/scripts/399862-kill-youtube-channel-video-autoplay
*/
if(window === top && console.time) console.time(SCRIPTID);
const MS = 1, SECOND = 1000*MS, MINUTE = 60*SECOND, HOUR = 60*MINUTE, DAY = 24*HOUR, WEEK = 7*DAY, MONTH = 30*DAY, YEAR = 365*DAY;
const FLAGNAME = SCRIPTID.toLowerCase();
const site = {
targets: {
body: () => $('body'),
},
get: {
video: () => $(`video:not([data-${FLAGNAME}])`),
startTime: () => {
/* t=1h0m0s or t=3600 */
let t = (new URL(location)).searchParams.get('t');
if(t === null) return;
let [h, m, s] = t.match(/^(?:([0-9]+)h)?(?:([0-9]+)m)?(?:([0-9]+)s?)?$/).slice(1).map(n => parseInt(n || 0));
return 60*60*h + 60*m + s;
},
},
is: {
immediate: (video) => ($('#player-api') && $('#player-api').contains(video)),
live: () => $('.ytp-time-display.ytp-live') !== null,
ad: () => $('#movie_player.ad-showing') !== null,
},
};
let elements = {}, flags = {}, view;
const core = {
initialize: function(){
elements.html = document.documentElement;
elements.html.classList.add(SCRIPTID);
core.ready();
},
ready: function(){
core.getTargets(site.targets).then(() => {
log("I'm ready.");
core.findVideo();
}).catch(e => {
console.error(`${SCRIPTID}:${e.lineNumber} ${e.name}: ${e.message}`);
});
},
findVideo: function(){
const found = function(video){
//log(video);
if(video.dataset[FLAGNAME]) return;
video.dataset[FLAGNAME] = 'found';
core.listenVideo(video);
};
/* if a video already exists */
let video = site.get.video();
if(video) found(video);
/* unavoidably observate body for immediate catch */
observe(elements.body, function(records){
let video = site.get.video();
if(video) found(video);
}, {childList: true, subtree: true});
},
listenVideo: function(video){
/* for the very immediate time */
//log(video.currentSrc, video.paused, video.currentTime);
core.stopAutoplay(video);
core.stopImmediateAutoplay(video);
/* the video element just changes its src attribute on any case */
video.addEventListener('loadstart', function(e){
//log(e.type, video.currentSrc, video.paused, video.currentTime);
if(site.is.live()) return log('this is a live and should start playing');
if(site.is.ad()) return log('this is an ad and should start playing.');
if(flags.playedOnce === location.href) return log('the ad has just closed and video should continue playing.');
/* then it should be stopped */
core.stopAutoplay(video);
});
/* memorize played status for restarting playing or not on after ads */
video.addEventListener('playing', function(e){
//log(e.type, video.currentTime);
if(site.is.ad()) return;
if(flags.playedOnce === location.href) return;
flags.playedOnce = location.href;/* played once on the current location */
});
if(flags.listeningNavigation === undefined){
flags.listeningNavigation = true;
document.addEventListener('yt-navigate-start', function(e){
//log(e, location.href);
delete flags.playedOnce;/* reset the played once status */
});
}
},
stopAutoplay: function(video){
//log();
video.autoplay = false;
video.pause();
},
stopImmediateAutoplay: function(video){
let count = 0, isImmediate = site.is.immediate(video), startTime = site.get.startTime();
//log(isImmediate, startTime);
if(isImmediate) count++;/* for the very first view of the YouTube which plays a video automatically for immediate user experience */
if(startTime) count++;/* for starting again from middle after seeking with query like t=123 */
if(count){
video.originalPlay = video.play;
video.play = function(){
log('(play)', count, video.currentTime);
if(site.is.ad()) return video.originalPlay();
if(--count === 0) video.play = video.originalPlay;
};
}
/* I don't know why but on t < 5, it'll surely be paused but player UI is remained playing. So... */
if(startTime && startTime < 5) video.addEventListener('seeked', function(e){
//log(e.type, video.currentTime);
video.play();
video.pause();
}, {once: true});
},
getTarget: function(selector, retry = 10, interval = 1*SECOND){
const key = selector.name;
const get = function(resolve, reject){
let selected = selector();
if(selected && selected.length > 0) selected.forEach((s) => s.dataset.selector = key);/* elements */
else if(selected instanceof HTMLElement) selected.dataset.selector = key;/* element */
else if(--retry) return log(`Not found: ${key}, retrying... (${retry})`), setTimeout(get, interval, resolve, reject);
else return reject(new Error(`Not found: ${selector.name}, I give up.`));
elements[key] = selected;
resolve(selected);
};
return new Promise(function(resolve, reject){
get(resolve, reject);
});
},
getTargets: function(selectors, retry = 10, interval = 1*SECOND){
return Promise.all(Object.values(selectors).map(selector => core.getTarget(selector, retry, interval)));
},
};
const setTimeout = window.setTimeout.bind(window), clearTimeout = window.clearTimeout.bind(window), setInterval = window.setInterval.bind(window), clearInterval = window.clearInterval.bind(window), requestAnimationFrame = window.requestAnimationFrame.bind(window);
const alert = window.alert.bind(window), confirm = window.confirm.bind(window), getComputedStyle = window.getComputedStyle.bind(window), fetch = window.fetch.bind(window);
if(!('isConnected' in Node.prototype)) Object.defineProperty(Node.prototype, 'isConnected', {get: function(){return document.contains(this)}});
const $ = function(s, f){
let target = document.querySelector(s);
if(target === null) return null;
return f ? f(target) : target;
};
const $$ = function(s, f){
let targets = document.querySelectorAll(s);
return f ? Array.from(targets).map(t => f(t)) : targets;
};
const observe = function(element, callback, options = {childList: true, characterData: false, subtree: false, attributes: false, attributeFilter: undefined}){
let observer = new MutationObserver(callback.bind(element));
observer.observe(element, options);
return observer;
};
const log = function(){
if(!DEBUG) return;
let l = log.last = log.now || new Date(), n = log.now = new Date();
let error = new Error(), line = log.format.getLine(error), callers = log.format.getCallers(error);
//console.log(error.stack);
console.log(
SCRIPTID + ':',
/* 00:00:00.000 */ n.toLocaleTimeString() + '.' + n.getTime().toString().slice(-3),
/* +0.000s */ '+' + ((n-l)/1000).toFixed(3) + 's',
/* :00 */ ':' + line,
/* caller.caller */ (callers[2] ? callers[2] + '() => ' : '') +
/* caller */ (callers[1] || '') + '()',
...arguments
);
};
log.formats = [{
name: 'Firefox Scratchpad',
detector: /MARKER@Scratchpad/,
getLine: (e) => e.stack.split('\n')[1].match(/([0-9]+):[0-9]+$/)[1],
getCallers: (e) => e.stack.match(/^[^@]*(?=@)/gm),
}, {
name: 'Firefox Console',
detector: /MARKER@debugger/,
getLine: (e) => e.stack.split('\n')[1].match(/([0-9]+):[0-9]+$/)[1],
getCallers: (e) => e.stack.match(/^[^@]*(?=@)/gm),
}, {
name: 'Firefox Greasemonkey 3',
detector: /\/gm_scripts\//,
getLine: (e) => e.stack.split('\n')[1].match(/([0-9]+):[0-9]+$/)[1],
getCallers: (e) => e.stack.match(/^[^@]*(?=@)/gm),
}, {
name: 'Firefox Greasemonkey 4+',
detector: /MARKER@user-script:/,
getLine: (e) => e.stack.split('\n')[1].match(/([0-9]+):[0-9]+$/)[1] - 500,
getCallers: (e) => e.stack.match(/^[^@]*(?=@)/gm),
}, {
name: 'Firefox Tampermonkey',
detector: /MARKER@moz-extension:/,
getLine: (e) => e.stack.split('\n')[1].match(/([0-9]+):[0-9]+$/)[1] - 6,
getCallers: (e) => e.stack.match(/^[^@]*(?=@)/gm),
}, {
name: 'Chrome Console',
detector: /at MARKER \(<anonymous>/,
getLine: (e) => e.stack.split('\n')[2].match(/([0-9]+):[0-9]+\)?$/)[1],
getCallers: (e) => e.stack.match(/[^ ]+(?= \(<anonymous>)/gm),
}, {
name: 'Chrome Tampermonkey',
detector: /at MARKER \(chrome-extension:.*?\/userscript.html\?name=/,
getLine: (e) => e.stack.split('\n')[2].match(/([0-9]+):[0-9]+\)?$/)[1] - 1,
getCallers: (e) => e.stack.match(/[^ ]+(?= \(chrome-extension:)/gm),
}, {
name: 'Chrome Extension',
detector: /at MARKER \(chrome-extension:/,
getLine: (e) => e.stack.split('\n')[2].match(/([0-9]+):[0-9]+\)?$/)[1],
getCallers: (e) => e.stack.match(/[^ ]+(?= \(chrome-extension:)/gm),
}, {
name: 'Edge Console',
detector: /at MARKER \(eval/,
getLine: (e) => e.stack.split('\n')[2].match(/([0-9]+):[0-9]+\)$/)[1],
getCallers: (e) => e.stack.match(/[^ ]+(?= \(eval)/gm),
}, {
name: 'Edge Tampermonkey',
detector: /at MARKER \(Function/,
getLine: (e) => e.stack.split('\n')[2].match(/([0-9]+):[0-9]+\)$/)[1] - 4,
getCallers: (e) => e.stack.match(/[^ ]+(?= \(Function)/gm),
}, {
name: 'Safari',
detector: /^MARKER$/m,
getLine: (e) => 0,/*e.lineが用意されているが最終呼び出し位置のみ*/
getCallers: (e) => e.stack.split('\n'),
}, {
name: 'Default',
detector: /./,
getLine: (e) => 0,
getCallers: (e) => [],
}];
log.format = log.formats.find(function MARKER(f){
if(!f.detector.test(new Error().stack)) return false;
//console.log('////', f.name, 'wants', 0/*line*/, '\n' + new Error().stack);
return true;
});
core.initialize();
if(window === top && console.timeEnd) console.timeEnd(SCRIPTID);
})();
