视频变速 for Tampermonkey

video-speed.user.js

// ==UserScript==
// @name         视频变速
// @namespace    http://tampermonkey.net/
// @version      2023-12-23
// @description  try to take over the world!
// @author       You
// @match        https://www.youtube.com/watch*
// @match        https://peixun.amac.org.cn/**
// @icon         https://www.google.com/s2/favicons?sz=64&domain=youtube.com
// @run-at       document-start
// @grant        GM_registerMenuCommand
// ==/UserScript==

(function () {
  'use strict';
  const setSpeed = (speed) => {
    const el = document.querySelector('video');
    if (el) {
      el.playbackRate = speed;
    }
  };

  GM_registerMenuCommand('1倍速', function () {
    setSpeed(1);
  });
  GM_registerMenuCommand('8倍速', function () {
    setSpeed(8);
  });
  GM_registerMenuCommand('16倍速', function () {
    setSpeed(16);
  });
})();