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html5 video speed controller (vlc like) modified by Sapioit

Simple html5 video speed control with 's', 'd', and 'r'. 's': decrease by 0.25, 'd': increase by 0.25, 'r': back to 1.0x

  1. // ==UserScript==
  2. // @name        html5 video speed controller (vlc like) modified by Sapioit
  3. // @namespace   github.com/sky-bro
  4. // @version     1.1.0.0
  5. // @description Simple html5 video speed control with 's', 'd', and 'r'. 's': decrease by 0.25, 'd': increase by 0.25, 'r': back to 1.0x
  6. // @author      https://sky-bro.github.io      https://sapioit.com
  7. // @match       https://www.youtube.com/*
  8. // @match       https://www.bilibili.com/*
  9. // @match       *://*.zhihuishu.com/*
  10. // @license     GPL-2.0-only; http://www.gnu.org/licenses/gpl-2.0.txt
  11. // @grant       none
  12. // ==/UserScript==
  13.  
  14. (function() {
  15.     'use strict';
  16.     function setPlaybackRate(player, rate) {
  17.         if (rate < 0.1) rate = 0.1;
  18.         else if (rate > 40) rate = 40;
  19.         player.playbackRate = rate;
  20.         console.log("playing in %sx", (rate).toFixed(1));
  21.     }
  22.  
  23.     window.addEventListener('keypress', function(event) {
  24.         var player = document.querySelector("video");
  25.         // console.log(event);
  26.         var curRate = Number(player.playbackRate);
  27.         // vlc actually uses '[' and ']', but they are used by vimium
  28.         if (event.key == "s") {
  29.             console.log("s pressed");
  30.             setPlaybackRate(player, curRate - 0.25);
  31.         } else if(event.key == "d") {
  32.             console.log("d pressed");
  33.             setPlaybackRate(player, curRate + 0.25);
  34.         } else if(event.key == "r") {
  35.             console.log("r pressed");
  36.             setPlaybackRate(player, 1);
  37.         }
  38.     });
  39. })();