Greasy Fork is available in English.
自动切换到你预先设定的画质。会优先使用Premium比特率。
当前为
// ==UserScript==
// @name Youtube HD Premium
// @name:zh-TW Youtube HD Premium
// @name:zh-CN Youtube HD Premium
// @name:ja Youtube HD Premium
// @icon https://www.youtube.com/img/favicon_48.png
// @author ElectroKnight22
// @namespace electroknight22_youtube_hd_namespace
// @version 2025.06.26
// I would prefer semantic versioning but it's a bit too late to change it at this point. Calendar versioning was originally chosen to maintain similarity to the adisib's code.
// @match *://www.youtube.com/*
// @match *://m.youtube.com/*
// @match *://www.youtube-nocookie.com/*
// @exclude *://www.youtube.com/live_chat*
// @grant GM.getValue
// @grant GM.setValue
// @grant GM.deleteValue
// @grant GM.listValues
// @grant GM.registerMenuCommand
// @grant GM.unregisterMenuCommand
// @grant GM.notification
// @grant GM.addValueChangeListener
// @grant GM_getValue
// @grant GM_setValue
// @grant GM_deleteValue
// @grant GM_listValues
// @grant GM_registerMenuCommand
// @grant GM_unregisterMenuCommand
// @grant GM_notification
// @grant GM_addValueChangeListener
// @run-at document-idle
// @license MIT
// @description Automatically switches to your pre-selected resolution. Enables premium when possible.
// @description:zh-TW 自動切換到你預先設定的畫質。會優先使用Premium位元率。
// @description:zh-CN 自动切换到你预先设定的画质。会优先使用Premium比特率。
// @description:ja 自動的に設定した画質に替わります。Premiumのビットレートを優先的に選択します。
// @homepage http://greasyfork.icu/en/scripts/498145-youtube-hd-premium
// ==/UserScript==
/*jshint esversion: 11 */
(function () {
"use strict";
const DEFAULT_SETTINGS = {
targetResolution: "hd2160",
expandMenu: false,
debug: false
};
const BROWSER_LANGUAGE = navigator.language || navigator.userLanguage;
const GET_PREFERRED_LANGUAGE = () => {
if (BROWSER_LANGUAGE.startsWith('zh') && BROWSER_LANGUAGE !== 'zh-TW') {
return 'zh-CN';
} else {
return BROWSER_LANGUAGE;
}
};
const TRANSLATIONS = {
'en-US': {
tampermonkeyOutdatedAlertMessage: "It looks like you're using an older version of Tampermonkey that might cause menu issues. For the best experience, please update to version 5.4.6224 or later.",
qualityMenu: 'Quality Menu',
debug: 'DEBUG'
},
'zh-TW': {
tampermonkeyOutdatedAlertMessage: "看起來您正在使用較舊版本的篡改猴，可能會導致選單問題。為了獲得最佳體驗，請更新至 5.4.6224 或更高版本。",
qualityMenu: '畫質選單',
debug: '偵錯'
},
'zh-CN': {
tampermonkeyOutdatedAlertMessage: "看起来您正在使用旧版本的篡改猴，这可能会导致菜单问题。为了获得最佳体验，请更新到 5.4.6224 或更高版本。",
qualityMenu: '画质菜单',
debug: '调试'
},
'ja': {
tampermonkeyOutdatedAlertMessage: "ご利用のTampermonkeyのバージョンが古いため、メニューに問題が発生する可能性があります。より良い体験のため、バージョン5.4.6224以上に更新してください。",
qualityMenu: '画質メニュー',
debug: 'デバッグ'
}
};
const GET_LOCALIZED_TEXT = () => {
const language = GET_PREFERRED_LANGUAGE();
return TRANSLATIONS[language] || TRANSLATIONS['en-US'];
};
const QUALITIES = {
highres: 4320,
hd2160: 2160,
hd1440: 1440,
hd1080: 1080,
hd720: 720,
large: 480,
medium: 360,
small: 240,
tiny: 144,
};
const PREMIUM_INDICATOR_LABEL = "Premium";
// -------------------------------
// Global variables
// -------------------------------
let userSettings = { ...DEFAULT_SETTINGS };
let useCompatibilityMode = false;
let menuItems = [];
let moviePlayer = null;
let isIframe = false;
let isOldTampermonkey = false;
const updatedVersions = {
Tampermonkey: '5.4.624',
};
// -------------------------------
// GM COMPATIBILITY LAYER
// -------------------------------
const GMCustomRegisterMenuCommand = useCompatibilityMode ? GM_registerMenuCommand : GM.registerMenuCommand;
const GMCustomUnregisterMenuCommand = useCompatibilityMode ? GM_unregisterMenuCommand : GM.unregisterMenuCommand;
const GMCustomGetValue = useCompatibilityMode ? GM_getValue : GM.getValue;
const GMCustomSetValue = useCompatibilityMode ? GM_setValue : GM.setValue;
const GMCustomDeleteValue = useCompatibilityMode ? GM_deleteValue : GM.deleteValue;
const GMCustomListValues = useCompatibilityMode ? GM_listValues : GM.listValues;
const GMCustomNotification = useCompatibilityMode ? GM_notification : GM.notification;
const GMCustomAddValueChangeListener = useCompatibilityMode ? GM_addValueChangeListener : GM.addValueChangeListener;
function printDebug(consoleMethod = console.log, ...args) {
if (!userSettings.debug) return;
if (typeof consoleMethod !== 'function') {
args.unshift(consoleMethod);
consoleMethod = console.log;
}
consoleMethod(...args);
}
function setResolution() {
try {
if (!moviePlayer) throw new Error("Movie player not found.");
const videoQualityData = moviePlayer.getAvailableQualityData();
// fixes non-auto-playing videos that have preloading disabled
if (!videoQualityData.length) {
printDebug("Trying to set resolution using iframe magic...");
try {
const videoElement = moviePlayer.querySelector('video');
moviePlayer.setPlaybackQualityRange(userSettings.targetResolution); // Force set quality to user preference. Breaks the UI but quality will be mostly correct. Instant.
videoElement.addEventListener('play', setResolution, { once: true }); // Waits for playback to set quality properly. Fixes the UI and guarantees correct quality. Slow.
return;
} catch (error) {
throw new Error("Tried to set resolution using iframe magic but failed.");
}
}
let resolvedTarget = findNextAvailableQuality(userSettings.targetResolution, moviePlayer.getAvailableQualityLevels());
const premiumData = videoQualityData.find(q =>
q.quality === resolvedTarget &&
q.qualityLabel?.trim().endsWith(PREMIUM_INDICATOR_LABEL) &&
q.isPlayable
);
moviePlayer.setPlaybackQualityRange(resolvedTarget, resolvedTarget, premiumData?.formatId);
printDebug(`Setting quality to: [${resolvedTarget}${premiumData ? " Premium" : ""}]`);
// if the video player is made unstarted, watch for playback start to reset resolution
let playerElement = document.getElementById('movie_player');
if (playerElement) {
playerElement.setAttribute('resolution-set', '');
playerElement.addEventListener('onStateChange', (state) => {
if (state === -1 && playerElement.hasAttribute('resolution-set')) {
playerElement.removeAttribute('resolution-set');
return;
}
if ((state === 1) && !playerElement.hasAttribute('resolution-set')) {
playerElement.setAttribute('resolution-set', '');
setResolution();
return;
}
});
}
} catch (error) {
printDebug(console.error, "Did not set resolution.", error);
}
}
function findNextAvailableQuality(target, availableQualities) {
const targetValue = QUALITIES[target];
return availableQualities
.filter(q => QUALITIES[q] <= targetValue)
.sort((a, b) => QUALITIES[b] - QUALITIES[a])[0];
}
function processVideoLoad(event = null) {
printDebug('Processing video load...');
moviePlayer = event?.target?.player_ ?? document.querySelector('#movie_player');
setResolution();
}
function processMenuOptions(options, callback) {
Object.values(options).forEach(option => {
if (!option.alwaysShow && !userSettings.expandMenu && !isOldTampermonkey) return;
if (option.items) {
option.items.forEach(item => callback(item));
} else {
callback(option);
}
});
}
function showMenuOptions() {
const shouldUseFallback = isOldTampermonkey || isIframe;
const shouldAutoClose = shouldUseFallback;
removeMenuOptions();
const menuExpandButton = shouldUseFallback ? {} : {
expandMenu: {
alwaysShow: true,
label: () => `${GET_LOCALIZED_TEXT().qualityMenu} ${userSettings.expandMenu ? "🔼" : "🔽"}`,
menuId: "menuExpandBtn",
handleClick: async function () {
userSettings.expandMenu = !userSettings.expandMenu;
await updateSetting('expandMenu', userSettings.expandMenu);
showMenuOptions();
},
},
};
const menuOptions = {
...menuExpandButton,
qualities: {
items: Object.entries(QUALITIES).map(([label, resolution]) => ({
label: () => `${resolution}p ${label === userSettings.targetResolution ? "✅" : ""}`,
menuId: label,
handleClick: async function () {
if (userSettings.targetResolution === label) return;
userSettings.targetResolution = label;
await updateSetting('targetResolution', label);
setResolution();
showMenuOptions();
},
})),
},
debug: {
label: () => `${GET_LOCALIZED_TEXT().debug} ${userSettings.debug ? "✅" : ""}`,
menuId: "debugBtn",
handleClick: async function () {
userSettings.debug = !userSettings.debug;
await updateSetting('debug', userSettings.debug);
showMenuOptions();
},
},
};
processMenuOptions(menuOptions, (item) => {
GMCustomRegisterMenuCommand(item.label(), item.handleClick, {
id: item.menuId,
autoClose: shouldAutoClose,
});
menuItems.push(item.menuId);
});
}
function removeMenuOptions() {
while (menuItems.length) {
GMCustomUnregisterMenuCommand(menuItems.pop());
}
}
function compareVersions(v1, v2) {
try {
if (!v1 || !v2) throw new Error("Invalid version string.");
if (v1 === v2) return 0;
const parts1 = v1.split('.').map(Number);
const parts2 = v2.split('.').map(Number);
const len = Math.max(parts1.length, parts2.length);
for (let i = 0; i < len; i++) {
const num1 = parts1[i] ?? 0;
const num2 = parts2[i] ?? 0;
if (num1 > num2) return 1;
if (num1 < num2) return -1;
}
return 0;
} catch (error) {
throw new Error("Error comparing versions: " + error);
}
}
function hasGreasyMonkeyAPI() {
if (typeof GM !== 'undefined') return true;
if (typeof GM_info !== 'undefined') {
useCompatibilityMode = true;
printDebug(console.warn, "Running in compatibility mode.");
return true;
}
return false;
}
function CheckTampermonkeyUpdated() {
if (GM_info.scriptHandler === "Tampermonkey") {
if (compareVersions(GM_info.version, updatedVersions.Tampermonkey) === 1) return;
isOldTampermonkey = true;
const versionWarningShown = GMCustomGetValue('versionWarningShown', false);
if (!versionWarningShown) {
GMCustomSetValue('versionWarningShown', true);
GMCustomNotification({
text: GET_LOCALIZED_TEXT().tampermonkeyOutdatedAlertMessage,
timeout: 15000
});
}
}
}
// -------------------------------
// Storage helper functions
// -------------------------------
async function loadUserSettings() {
try {
const storedSettings = await GMCustomGetValue('settings', {});
userSettings = Object.keys(DEFAULT_SETTINGS).reduce((accumulator, key) => {
accumulator[key] = storedSettings.hasOwnProperty(key) ? storedSettings[key] : DEFAULT_SETTINGS[key];
return accumulator;
}, {});
if (!QUALITIES[userSettings.targetResolution]) userSettings.targetResolution = DEFAULT_SETTINGS.targetResolution;
await GMCustomSetValue('settings', userSettings);
printDebug(`Loaded user settings: ${JSON.stringify(userSettings)}.`);
} catch (error) {
throw error;
}
}
async function updateSetting(key, value) {
try {
let currentSettings = await GMCustomGetValue('settings', DEFAULT_SETTINGS);
currentSettings[key] = value;
await GMCustomSetValue('settings', currentSettings);
} catch (error) {
printDebug(console.error, "Error updating setting: ", error);
}
}
async function cleanupOldStorage() {
try {
const allowedKeys = ['settings', 'versionWarningShown'];
const keys = await GMCustomListValues();
for (const key of keys) {
if (!allowedKeys.includes(key)) {
await GMCustomDeleteValue(key);
printDebug(`Deleted leftover key: ${key}`);
}
}
} catch (error) {
printDebug(console.error, "Error cleaning up old storage keys: ", error);
}
}
function addEventListeners() {
if (window.location.hostname === "m.youtube.com") {
window.addEventListener('state-navigateend', processVideoLoad, true);
} else {
window.addEventListener('yt-player-updated', processVideoLoad, true);
}
// Sync settings across tabs
GMCustomAddValueChangeListener('settings', (key, oldValue, newValue, remote) => {
if (remote) {
printDebug('Settings changed in another tab. Syncing state.');
userSettings = newValue;
showMenuOptions();
if (!document.hidden) {
setResolution();
} else { // delay resolution change for background tabs until they are visible
window.addEventListener('visibilitychange', () => {
if (!document.hidden) setResolution();
}, { once: true });
}
}
});
}
async function initialize() {
if (window.self !== window.top) isIframe = true;
try {
if (!hasGreasyMonkeyAPI()) throw new Error("Did not detect valid Grease Monkey API");
await cleanupOldStorage();
await loadUserSettings();
CheckTampermonkeyUpdated();
} catch (error) {
printDebug(console.error, `Error loading user settings: ${error}. Loading with default settings.`);
}
window.addEventListener('pageshow', processVideoLoad, true);
addEventListeners();
showMenuOptions();
}
initialize();
})();