Udemy の動画の再生速度をチャプター移動ごとに変えない

udemy-keep-playbackrate.user.js

// ==UserScript==
// @name         出、出～腕見動画速度維持奴〜
// @namespace https://gist.github.com/tkdn/5b55161f21a242057fdaf8c436d24012#file-udemy-keep-playbackrate-user-js
// @updateURL https://gist.github.com/tkdn/5b55161f21a242057fdaf8c436d24012/raw/359b25e92bd25d31286fbd1ad6cba9f85a3ae9d1/udemy-keep-playbackrate.user.js
// @downloadURL https://gist.github.com/tkdn/5b55161f21a242057fdaf8c436d24012/raw/359b25e92bd25d31286fbd1ad6cba9f85a3ae9d1/udemy-keep-playbackrate.user.js
// @version      0.2
// @description  Udemy で動画の再生速度をチャプター移動ごとに変えない
// @author       tkdn <tkdnation@gmail.com>
// @match        https://*.udemy.com/*/*
// @grant        none
// ==/UserScript==

(() => {
  console.log('出、出～腕見動画速度維持奴〜')
  let timer
  timer = setInterval(() => {
    const video = document.querySelectorAll('video')[0]
    const rate = window.__videoPlaybackRate__ ?? 1.5
    if (video.playbackRate === rate) {
        return
    }
    console.log(`change video rate: x${rate}`)
    video.playbackRate = rate
  }, 2000)
})();