☰

Loop Fix

Fixes youtube video repeating when watching in playlist + refreshing page if video stopped downloading

当前为 2024-09-18 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name         Loop Fix
  3. // @description  Fixes youtube video repeating when watching in playlist + refreshing page if video stopped downloading
  4. // @version      0.1.13
  5. // @author       0vC4
  6. // @namespace    https://greasyfork.org/users/670183
  7. // @match        *://*.youtube.com/*
  8. // @icon         https://www.google.com/s2/favicons?sz=64&domain=youtube.com
  9. // @run-at       document-start
  10. // @license      MIT
  11. // @grant        none
  12. // ==/UserScript==
  13.  
  14. // refresh if no reply during these actions
  15. const maxLoadingTime = 500;
  16. const maxSeekingTime = 1500;
  17.  
  18. (() => {
  19.     function blockEvents(condition, ...events) {
  20.         events = events.flat();
  21.         const tag = window.EventTarget.prototype;
  22.         tag._add = tag.addEventListener;
  23.         tag.addEventListener = function (name, callback, options) {
  24.             if (!events.includes(name)) return tag._add.call(this, name, callback, options);
  25.  
  26.             function cb(e) {
  27.                 if (!condition.call(this)) return;
  28.                 callback.call(this, e);
  29.             };
  30.  
  31.             tag._add.call(this, name, cb, options);
  32.         };
  33.     }
  34.  
  35.     blockEvents(function() {
  36.         return !this.loop; // have loop = block events
  37.     }, 'pause', 'timeupdate', 'waiting');
  38. })();
  39.  
  40. const log = window.console.log;
  41. window.loopState = localStorage.getItem('loopState') ?? false;
  42. function clicking(e) {
  43.     window.loopState = JSON.parse(this.ariaChecked);
  44. };
  45.  
  46. let created = false;
  47. let refreshing = false;
  48. let loaded = false;
  49. let oldVid = null;
  50. let seeking = false;
  51. let seekingId = 0;
  52.  
  53. const maxSeekingDebounce = 500;
  54. const policy = window.trustedTypes && window.trustedTypes.createPolicy ? window.trustedTypes.createPolicy('timeout', {createScriptURL: str => str}) : {createScriptURL: str => str};
  55. const timeout = delay => URL.createObjectURL(new Blob([`setTimeout(() => postMessage(0), ${delay});`]));
  56. const refreshOnLoad = policy.createScriptURL(timeout(maxLoadingTime));
  57. const seekingDebounce = policy.createScriptURL(timeout(maxSeekingDebounce));
  58.  
  59. if (document.readyState === "complete") {
  60.     window.setInterval(()=>{
  61.         const vid = window.document.querySelector('video.html5-main-video');
  62.         if (vid) {
  63.             // to prevent false detecting when changing video
  64.             if (vid != oldVid) {
  65.                 loaded = false;
  66.                 oldVid = vid;
  67.             }
  68.  
  69.             if (!created) {
  70.                 created = true;
  71.                 localStorage.removeItem('loopState');
  72.                 vid.addEventListener('seeking', () => {
  73.                     clearTimeout(seekingId);
  74.                     seeking = true;
  75.                     console.log('seeking true!');
  76.                     seekingId = setTimeout(() => {
  77.                         seeking = false;
  78.                     }, maxSeekingTime);
  79.                 });
  80.  
  81.                 // refresh if no data for half sec
  82.                 const callback = () => {
  83.                     if (!loaded && vid.readyState === window.HTMLMediaElement.HAVE_NOTHING) {
  84.                         localStorage.setItem('loopState', window.loopState);
  85.                         window.location.href = window.location.href;
  86.                     }
  87.                 };
  88.                 new Worker(refreshOnLoad).onmessage = callback;
  89.             }
  90.  
  91.             // apply loopState after .src or page refresh
  92.             if (vid.loop != window.loopState) vid.loop = window.loopState;
  93.  
  94.             // to prevent early page refresh
  95.             if (vid.readyState === window.HTMLMediaElement.HAVE_CURRENT_DATA || vid.readyState === window.HTMLMediaElement.HAVE_ENOUGH_DATA) loaded = true;
  96.  
  97.             const noData = vid.readyState === window.HTMLMediaElement.HAVE_CURRENT_DATA || vid.readyState === window.HTMLMediaElement.HAVE_METADATA;
  98.  
  99.             if (loaded && !refreshing && noData && !seeking && !vid.paused && +vid.currentTime.toFixed(0) >= +vid.buffered.end(0).toFixed(0) - 2) {
  100.                 refreshing = true;
  101.                 const callback = () => {
  102.                     if (seeking) {
  103.                         refreshing = false;
  104.                         return;
  105.                     }
  106.                     localStorage.setItem('loopState', window.loopState);
  107.                     window.location.href = window.location.href.split('?')[0] + '?t=' + (+vid.currentTime.toFixed(0) + 1) + '&' + window.location.href.split('?')[1];
  108.                 };
  109.                 new Worker(seekingDebounce).onmessage = callback;
  110.             }
  111.         }
  112.  
  113.         // attach loop click detector
  114.         const repeat = window.document.querySelectorAll('.ytp-menuitem[tabindex="-1"]')[0];
  115.         if (repeat && repeat.onclick != clicking) {
  116.             repeat.onclick = clicking
  117.         }
  118.     });
  119. }