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Google Video Playback Optimizer

Keep Google video playback active even when the tab is not in focus

  1. // ==UserScript==
  2. // @name         Google Video Playback Optimizer
  3. // @namespace    http://tampermonkey.net/
  4. // @version      2024-10-09
  5. // @description  Keep Google video playback active even when the tab is not in focus
  6. // @author       UniverseDev
  7. // @license      GPL-3.0-or-later
  8. // @match        https://www.google.com/search?*
  9. // @icon         https://www.google.com/s2/favicons?domain=google.com&sz=64
  10. // @grant        none
  11. // ==/UserScript==
  12.  
  13. (function() {
  14.     'use strict';
  15.  
  16.     function keepPageVisible() {
  17.         let hidden;
  18.         if (typeof document.hidden !== "undefined") {
  19.             hidden = "hidden";
  20.         } else if (typeof document.msHidden !== "undefined") {
  21.             hidden = "msHidden";
  22.         } else if (typeof document.webkitHidden !== "undefined") {
  23.             hidden = "webkitHidden";
  24.         } else {
  25.             console.warn('Google Video Playback Optimizer: Visibility API not supported');
  26.             return;
  27.         }
  28.  
  29.         try {
  30.             Object.defineProperty(document, hidden, {
  31.                 get: () => false,
  32.                 configurable: true
  33.             });
  34.  
  35.             Object.defineProperty(document, 'visibilityState', {
  36.                 get: () => 'visible',
  37.                 configurable: true
  38.             });
  39.  
  40.             console.log('Google Video Playback Optimizer: Page visibility override applied');
  41.         } catch (error) {
  42.             console.error('Google Video Playback Optimizer: Failed to override visibility properties', error);
  43.         }
  44.     }
  45.  
  46.     function checkAndActivateForVideo() {
  47.         const videoElements = document.querySelectorAll('video');
  48.         if (videoElements.length > 0) {
  49.             keepPageVisible();
  50.         }
  51.     }
  52.  
  53.     function checkAndActivateVisibilityOverride() {
  54.         const url = window.location.href;
  55.         const fragment = window.location.hash;
  56.  
  57.         if (fragment.includes('vid:')) {
  58.             keepPageVisible();
  59.         } else {
  60.             console.log('Google Video Playback Optimizer: Not a video page based on URL fragment.');
  61.         }
  62.     }
  63.  
  64.     setInterval(checkAndActivateForVideo, 2000);
  65.  
  66.     window.addEventListener('load', () => {
  67.         checkAndActivateForVideo();
  68.         checkAndActivateVisibilityOverride();
  69.     });
  70.  
  71.     const originalPushState = history.pushState;
  72.     const originalReplaceState = history.replaceState;
  73.  
  74.     history.pushState = function() {
  75.         originalPushState.apply(this, arguments);
  76.         checkAndActivateForVideo();
  77.         checkAndActivateVisibilityOverride();
  78.     };
  79.  
  80.     history.replaceState = function() {
  81.         originalReplaceState.apply(this, arguments);
  82.         checkAndActivateForVideo();
  83.         checkAndActivateVisibilityOverride();
  84.     };
  85.  
  86.     checkAndActivateForVideo();
  87.     checkAndActivateVisibilityOverride();
  88.  
  89. })();