// ==UserScript==
// @name               Auto Change Youtube Video Resolution to Max
// @name:zh-TW         Auto Change Youtube Video Resolution to Max
// @namespace          https://greasyfork.org/scripts/453854
// @version            1.0.1
// @description        auto change the video resolution to Max
// @description:zh-TW  自動將影片畫質切換至最高畫質
// @author             Derek
// @match              *://www.youtube.com/*
// @grant              none
// @noframes
// @downloadURL none
// ==/UserScript==

let main = () => {
  let player = document.querySelector('#movie_player')
  let maxRes = player.getAvailableQualityLevels()[0]
  player.setPlaybackQualityRange(maxRes)
}

document.addEventListener('yt-navigate-finish', () => { if (window.location.href.includes('/watch?v=')) main() })