☰

Loop Fix

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

当前为 2024-09-30 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      0.1.18
  5. // @author       0vC4
  6. // @namespace    https://greasyfork.org/users/670183
  7. // @match        *://*.youtube.com/watch*
  8. // @match        *://*.youtube.com/shorts*
  9. // @icon         https://www.google.com/s2/favicons?sz=64&domain=youtube.com
  10. // @run-at       document-start
  11. // @license      MIT
  12. // @grant        none
  13. // ==/UserScript==
  14.  
  15. // refresh if no reply during these actions
  16. const maxLoadingTime = 500;
  17. const maxSeekingTime = 1500;
  18.  
  19. (() => {
  20.     function blockEvents(condition, ...events) {
  21.         events = events.flat();
  22.         const tag = window.EventTarget.prototype;
  23.         tag._add = tag.addEventListener;
  24.         tag.addEventListener = function (name, callback, options) {
  25.             if (!events.includes(name)) return tag._add.call(this, name, callback, options);
  26.  
  27.             function cb(e) {
  28.                 if (!condition.call(this)) return;
  29.                 callback.call(this, e);
  30.             };
  31.  
  32.             tag._add.call(this, name, cb, options);
  33.         };
  34.     }
  35.  
  36.     blockEvents(function() {
  37.         return !this.loop; // have loop = block events
  38.     }, 'pause', 'timeupdate', 'waiting');
  39. })();
  40.  
  41. const log = window.console.log;
  42. window.loopState = window.localStorage.getItem('loopState') ?? false;
  43. function clicking(e) {
  44.     window.loopState = JSON.parse(this.ariaChecked);
  45. };
  46.  
  47. let created = false;
  48. let refreshing = false;
  49.  
  50. let loaded = false;
  51. let navigating = true;
  52.  
  53. let seeking = false;
  54. let seekingId = 0;
  55.  
  56. const policy = window.trustedTypes && window.trustedTypes.createPolicy ? window.trustedTypes.createPolicy('timeout', {createScriptURL: str => str}) : {createScriptURL: str => str};
  57. const timeout = delay => URL.createObjectURL(new Blob([`setTimeout(() => postMessage(0), ${delay});`]));
  58. const refreshOnLoad = policy.createScriptURL(timeout(maxLoadingTime));
  59. const seekingDebounce = policy.createScriptURL(timeout(500));
  60.  
  61. document.addEventListener('yt-navigate-start', () => {
  62.     navigating = true;
  63.     loaded = false;
  64. });
  65. document.addEventListener('yt-navigate-finish', () => {
  66.     navigating = false;
  67. });
  68.  
  69. let focused = false;
  70. window.setInterval(()=>{
  71.     if (!focused) {
  72.         focused = document.hasFocus();
  73.         return;
  74.     }
  75.  
  76.     const vid = window.document.querySelector('video.html5-main-video');
  77.     if (vid) {
  78.         if (!created) {
  79.             created = true;
  80.             window.localStorage.removeItem('loopState');
  81.             vid.addEventListener('seeking', () => {
  82.                 clearTimeout(seekingId);
  83.                 seeking = true;
  84.                 seekingId = setTimeout(() => {
  85.                     seeking = false;
  86.                 }, maxSeekingTime);
  87.             });
  88.  
  89.             // refresh if no data for half sec
  90.             const callback = () => {
  91.                 if (!loaded && vid.readyState === window.HTMLMediaElement.HAVE_NOTHING) {
  92.                     window.localStorage.setItem('loopState', window.loopState);
  93.                     window.location.href = window.location.href;
  94.                 }
  95.             };
  96.             new Worker(refreshOnLoad).onmessage = callback;
  97.         }
  98.  
  99.         // to prevent early page refresh
  100.         if (vid.readyState === window.HTMLMediaElement.HAVE_CURRENT_DATA || vid.readyState === window.HTMLMediaElement.HAVE_ENOUGH_DATA) loaded = !navigating;
  101.  
  102.         const noData = vid.readyState === window.HTMLMediaElement.HAVE_CURRENT_DATA || vid.readyState === window.HTMLMediaElement.HAVE_METADATA;
  103.  
  104.         if (loaded && !refreshing && noData && !seeking && !vid.paused && +vid.currentTime.toFixed(0) >= +vid.buffered.end(0).toFixed(0) - 2 && +vid.currentTime.toFixed(0) < +vid.duration.toFixed(0) - 2) {
  105.             refreshing = true;
  106.             const callback = () => {
  107.                 if (seeking) {
  108.                     refreshing = false;
  109.                     return;
  110.                 }
  111.                 window.localStorage.setItem('loopState', window.loopState);
  112.                 window.location.href = window.location.href.split('?')[0] + '?t=' + (+vid.currentTime.toFixed(0) + 1) + '&' + window.location.href.split('?')[1];
  113.             };
  114.             new Worker(seekingDebounce).onmessage = callback;
  115.         }
  116.  
  117.         // apply loopState after .src or page refresh
  118.         if (vid.loop != window.loopState) vid.loop = window.loopState;
  119.  
  120.         // attach loop click detector
  121.         const repeat = window.document.querySelectorAll('.ytp-menuitem[tabindex="-1"]')[0];
  122.         if (repeat && repeat.onclick != clicking) {
  123.             repeat.onclick = clicking;
  124.         }
  125.     }
  126. });