YouTube固定影片畫質

記住選取的 YouTube 影片畫質,不需任何額外的操作介面。

目前為 2023-06-15 提交的版本,檢視 最新版本

您需要先安裝使用者腳本管理器擴展,如 TampermonkeyGreasemonkeyViolentmonkey 之後才能安裝該腳本。

You will need to install an extension such as Tampermonkey to install this script.

您需要先安裝使用者腳本管理器擴充功能,如 TampermonkeyViolentmonkey 後才能安裝該腳本。

您需要先安裝使用者腳本管理器擴充功能,如 TampermonkeyUserscripts 後才能安裝該腳本。

你需要先安裝一款使用者腳本管理器擴展,比如 Tampermonkey,才能安裝此腳本

您需要先安裝使用者腳本管理器擴充功能後才能安裝該腳本。

(我已經安裝了使用者腳本管理器,讓我安裝!)

你需要先安裝一款使用者樣式管理器擴展,比如 Stylus,才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展,比如 Stylus,才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展,比如 Stylus,才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

(我已經安裝了使用者樣式管理器,讓我安裝!)

// ==UserScript==
// @name         YouTube Fixed Video Quality
// @name:zh-TW   YouTube固定影片畫質
// @name:zh-CN   YouTube固定视频画质

// @description          Remember video quality without any additional user interface.
// @description:zh-TW    記住選取的 YouTube 影片畫質,不需任何額外的操作介面。
// @description:zh-CN    记住选取的 YouTube 视频画质,不需任何额外的操作介面。

// @license MIT
// @namespace    https://greasyfork.org/users/1086571
// @version      1.1
// @author       IzsKon
// @match        https://www.youtube.com/*
// @icon         data:image/png;base64,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
// @grant        GM.getValue
// @grant        GM.setValue
// ==/UserScript==

(async function() {
	'use strict';
	let vidQuality = await GM.getValue( 'videoQuality', 1 );

	document.addEventListener('yt-player-updated', () => {

		/* Check page type. */
		if ( window.location.pathname != '/watch' ) {
			return;
		}

		/* Load settings panel. */
		let settingsBtn = document.querySelector('.ytp-settings-button');
		settingsBtn.click();
		settingsBtn.click();

		/* Open quality selection panel. */
		let qualityBtn = document.querySelector('.ytp-menuitem-content div:not(.ytp-menuitem-toggle-checkbox)');
		qualityBtn.click();
		let qualityOptions = document.querySelectorAll('.ytp-quality-menu .ytp-menuitem:not(:has(.ytp-premium-label))');

		/* Close quality selection panel. */
		settingsBtn.click();
		settingsBtn.click();

		/* Select video quality. */
		let nth_option = qualityOptions.length - vidQuality;
		qualityOptions[ Math.max(0, nth_option) ].click();

		/* Add event listener to quality selection. */
		for ( let i = 0; i < qualityOptions.length; ++i ) {
			qualityOptions[i].addEventListener('click', () => {
				GM.setValue( 'videoQuality', qualityOptions.length - i );
			});
		}
	});

})();