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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
// @icon data:image/png;base64,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
// @author ElectroKnight22
// @namespace electroknight22_youtube_hd_namespace
// @version 2024.09.02
// 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/*
// @exclude *://www.youtube.com/live_chat*
// @grant GM.getValue
// @grant GM.setValue
// @grant GM.deleteValue
// @grant GM.listValues
// @grant GM_registerMenuCommand
// @grant GM_unregisterMenuCommand
// @license MIT
// @description Automcatically 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。
// ==/UserScript==
/*jshint esversion: 11 */
(function() {
"use strict";
const DEBUG = false;
const DEFAULT_SETTINGS = {
targetResolution: "hd2160"
};
const resolutions = ['highres', 'hd2880', 'hd2160', 'hd1440', 'hd1080', 'hd720', 'large', 'medium', 'small', 'tiny', 'auto'];
const quality = {
highres: 4320,
hd2880: 2880,
hd2160: 2160,
hd1440: 1440,
hd1080: 1080,
hd720: 720,
large: 480,
medium: 360,
small: 240,
tiny: 144,
auto: 0
};
const qualityLevels = Object.fromEntries(
Object.entries(quality).map(([key, value]) => [value, key])
);
let userSettings = { ...DEFAULT_SETTINGS };
let menuCommandIds = [];
let videoId = null;
let resolvedTarget = 0;
let targetLabel = '';
let attempts = 0;
let attemptedChange = false;
// --------------------
// --- FUNCTIONS ------
// --------------------
function debugLog(message, shouldShow = true) {
if (DEBUG && shouldShow) {
console.log("YTHD DEBUG | " + message);
}
}
// --------------------
// Attempt to set the video resolution to target quality or the next best quality
function setResolution(target, force = false) {
if (target === 'auto') return;
let ytPlayer = document.getElementById("movie_player") || document.getElementsByClassName("html5-video-player")[0];
if (!isValidVideo(ytPlayer, force)) return;
videoId = ytPlayer.getVideoData().video_id;
let availableQualities = ytPlayer.getAvailableQualityLevels();
resolvedTarget = findNextAvailableQuality(target, availableQualities);
attemptedChange = true;
debugLog("Resolved target resolution: " + resolvedTarget);
let premiumIndicator = "Premium";
let premiumData = ytPlayer.getAvailableQualityData().find(q => q.quality === resolvedTarget && q.qualityLabel.includes(premiumIndicator) && q.isPlayable);
ytPlayer.setPlaybackQualityRange(resolvedTarget, resolvedTarget, premiumData?.formatId);
targetLabel = quality[resolvedTarget] + "p" + (premiumData ? " Premium" : "");
debugLog("Trying to set quality to: " + targetLabel);
}
function isValidVideo(ytPlayer, force) {
//debugLog(JSON.stringify(ytPlayer?.getVideoData(), null, 2));
if (window.location.href.startsWith("https://www.youtube.com/shorts/")) {
debugLog("Skipping Youtube Shorts");
videoId = null;
return false;
}
if (!ytPlayer?.getAvailableQualityLabels()[0]) {
debugLog("Video data missing");
videoId = null;
return false;
}
if (videoId == ytPlayer.getVideoData().video_id && !force) {
debugLog("Duplicate load");
return false;
}
return true;
}
function findNextAvailableQuality(target, availableQualities) {
const available = availableQualities.map(q => ({ quality: q, value: quality[q] }));
const targetValue = quality[target];
const smallerOrEqualQualities = available.filter(q => q.value <= targetValue);
smallerOrEqualQualities.sort((a, b) => b.value - a.value);
return smallerOrEqualQualities.length > 0 ? smallerOrEqualQualities[0].quality : 'auto';
}
// Tries to validate setting changes. If this fails to detect a successful update it will call setResolution to attempt to force the playback quality to update again.
function verifyChange(retries = 10) {
if (!attemptedChange) return;
let retryDelay = 500;
let ytPlayer = document.getElementById("movie_player") || document.getElementsByClassName("html5-video-player")[0];
if (!ytPlayer) {
debugLog("YouTube player not found. Retrying after " + retryDelay + "ms...");
if (retries > 0) {
setTimeout(() => verifyChange(retries - 1), retryDelay);
} else {
debugLog("Failed to find YouTube player after multiple attempts.");
}
attemptedChange = false;
return;
}
if (!isValidVideo(ytPlayer, true)) {
debugLog("Could not find valid video to verify.");
attemptedChange = false;
return;
}
let currentLabel = ytPlayer.getPlaybackQualityLabel();
let currentQuality = ytPlayer.getPlaybackQuality();
if (!currentLabel || !currentQuality) {
debugLog("Failed to fetch quality label. Retrying after " + retryDelay + "ms...");
if (retries > 0) {
setTimeout(() => verifyChange(retries - 1), retryDelay);
} else {
debugLog("Failed to fetch quality label after multiple attempts.");
}
attemptedChange = false;
return;
}
let success = targetLabel.endsWith("Premium") ? currentLabel === targetLabel : currentQuality === resolvedTarget;
debugLog("Current Label: " + currentLabel);
debugLog("Target Label: " + targetLabel);
debugLog("Current Quality: " + currentQuality);
debugLog("Target Quality: " + resolvedTarget);
if (success) {
debugLog("Quality set successfully!");
saveQualityPreferenceToBrowser();
} else {
debugLog("Quality failed to set, retrying after " + retryDelay + "ms...");
if (retries > 0) {
setTimeout(() => verifyChange(retries - 1), retryDelay);
} else {
debugLog("Maximum attempts reached. Either YouTube cannot respond fast enough or the this script is no longer compatible.");
}
}
attemptedChange = false;
}
// --------------------
// Functions for the quality selection menu
function createQualityMenu() {
GM_registerMenuCommand("Set Preferred Quality (show/hide)", () => {
menuCommandIds.length ? removeQualityMenuItems() : showQualityMenuItems();
}, {
autoClose: false
});
}
function showQualityMenuItems() {
removeQualityMenuItems();
resolutions.forEach((resolution) => {
let qualityText = (resolution === 'auto') ? 'auto' : quality[resolution] + "p";
if (resolution === userSettings.targetResolution) {
qualityText += " (selected)";
}
let menuCommandId = GM_registerMenuCommand(qualityText, () => {
setSelectedResolution(resolution);
}, {
autoClose: false,
});
menuCommandIds.push(menuCommandId);
});
}
function removeQualityMenuItems() {
while (menuCommandIds.length) {
GM_unregisterMenuCommand(menuCommandIds.pop());
}
}
function setSelectedResolution(resolution) {
if (userSettings.targetResolution == resolution) return;
userSettings.targetResolution = resolution;
GM.setValue('targetResolution', resolution);
removeQualityMenuItems();
showQualityMenuItems();
setResolution(resolution, true);
}
// --------------------
// Sync settings with locally stored values
async function applySettings() {
try {
// Get all keys from GM
const storedValues = await GM.listValues();
// Write any missing key-value pairs from DEFAULT_SETTINGS to GM
await Promise.all(Object.entries(DEFAULT_SETTINGS).map(async ([key, value]) => {
if (!storedValues.includes(key)) {
await GM.setValue(key, value);
}
}));
// Delete any extra keys in GM that are not in DEFAULT_SETTINGS
await Promise.all(storedValues.map(async key => {
if (!(key in DEFAULT_SETTINGS)) {
await GM.deleteValue(key);
}
}));
// Retrieve and update user settings from GM
await Promise.all(
storedValues.map(key => GM.getValue(key).then(value => [key, value]))
).then(keyValuePairs => keyValuePairs.forEach(([newKey, newValue]) => {
userSettings[newKey] = newValue;
}));
debugLog(Object.entries(userSettings).map(([key, value]) => key + ": " + value).join(", "));
} catch (error) {
debugLog("Error when applying settings: " + error.message);
}
}
// --------------------
// Main function
function main() {
if (window.self == window.top) { createQualityMenu(); }
setResolution(userSettings.targetResolution);
window.addEventListener('popstate', () => { videoId = null; });
window.addEventListener("loadstart", () => { setResolution(userSettings.targetResolution); }, true);
window.addEventListener("yt-navigate-finish", () => { verifyChange(); }, true);
}
// --------------------
// Entry Point
applySettings().then(main);
})();