Automatically select your desired video quality and select premium when posibble.
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// ==UserScript==
// @name Youtube Quality HD
// @version 1.2.0
// @description Automatically select your desired video quality and select premium when posibble.
// @run-at document-body
// @match https://www.youtube.com/*
// @exclude https://*.youtube.com/live_chat*
// @exclude https://*.youtube.com/tv*
// @icon https://www.google.com/s2/favicons?sz=64&domain=youtube.com
// @grant GM.getValue
// @grant GM.setValue
// @author Fznhq
// @namespace https://github.com/fznhq
// @homepageURL https://github.com/fznhq/userscript-collection
// @license GNU GPLv3
// ==/UserScript==
// Icons provided by https://uxwing.com/
(async function () {
"use strict";
const listQuality = [144, 240, 360, 480, 720, 1080, 1440, 2160, 2880, 4320];
const defaultPreferredQuality = 1080;
let manualOverride = false;
let isUpdated = false;
const options = {
preferred_quality: defaultPreferredQuality,
preferred_premium: true,
updated_id: "",
};
const icons = {
premium: `{"svg":{"viewBox":"0 0 123 95"},"path":{"fill":"white","d":"M1 28 20 1a3 3 0 0 1 3-1h77a3 3 0 0 1 3 1l19 27a3 3 0 0 1 1 2 3 3 0 0 1-1 2L64 94a3 3 0 0 1-4 0L1 32a3 3 0 0 1-1-1 3 3 0 0 1 1-3Zm44 5 17 51 17-51Zm39 0L68 82l46-49ZM56 82 39 33H9l47 49ZM28 5l13 20L56 5Zm39 0 15 20L95 5Zm33 2L87 27h28L100 7ZM77 27 61 7 47 27Zm-41 0L22 7 8 27Z"}}`,
quality: `{"svg":{"viewBox":"0 0 123 107"},"path":{"fill":"white","fill-rule":"evenodd","d":"M113 57a4 4 0 0 1 2 1l3 4a5 5 0 0 1 1 2 4 4 0 0 1 0 1 4 4 0 0 1 0 2 4 4 0 0 1-1 1l-3 2v1l1 1v2h3a4 4 0 0 1 3 1 4 4 0 0 1 1 2 4 4 0 0 1 0 1l-1 6a4 4 0 0 1-1 3 4 4 0 0 1-3 1h-3l-1 1-1 1v1l2 2a4 4 0 0 1 1 1 4 4 0 0 1-1 3 4 4 0 0 1-1 2l-4 3a4 4 0 0 1-1 1 4 4 0 0 1-2 0 5 5 0 0 1-1 0 4 4 0 0 1-2-1l-2-3a1 1 0 0 1 0 1h-3v3a4 4 0 0 1-1 2 4 4 0 0 1-1 1 4 4 0 0 1-1 1 4 4 0 0 1-2 0h-5a4 4 0 0 1-4-5v-3l-2-1-1-1-2 2a4 4 0 0 1-2 1 4 4 0 0 1-1 0 4 4 0 0 1-2 0 4 4 0 0 1-1-1l-4-4a5 5 0 0 1 0-2 4 4 0 0 1-1-2 4 4 0 0 1 2-3l2-2v-1l-1-2h-2a4 4 0 0 1-2-1 4 4 0 0 1-1-1 4 4 0 0 1-1-1 4 4 0 0 1 0-2v-5a4 4 0 0 1 1-2 5 5 0 0 1 1-1 4 4 0 0 1 1-1 4 4 0 0 1 2 0h3l1-1v-2l-1-2a4 4 0 0 1-1-1 4 4 0 0 1 0-2 4 4 0 0 1 0-2 4 4 0 0 1 1-1l4-3a5 5 0 0 1 2-1 4 4 0 0 1 1-1 4 4 0 0 1 2 1 4 4 0 0 1 1 1l2 2h2l1-1 1-2a4 4 0 0 1 0-2 4 4 0 0 1 1-1 4 4 0 0 1 2-1 4 4 0 0 1 1 0h6a5 5 0 0 1 1 1 4 4 0 0 1 2 1 4 4 0 0 1 0 1 4 4 0 0 1 1 2l-1 3h1l1 1 1 1 3-2a4 4 0 0 1 1-1 4 4 0 0 1 2 0 4 4 0 0 1 1 0ZM11 0h82a11 11 0 0 1 11 11v30h-1a11 11 0 0 0-2-1h-2V21H5v49h51a12 12 0 0 0 0 2v4h-1v11h4l1 1h1l-1 1a12 12 0 0 0 0 2v1H11A11 11 0 0 1 0 81V11A11 11 0 0 1 11 0Zm35 31 19 13a3 3 0 0 1 0 4L47 61a3 3 0 0 1-2 0 3 3 0 0 1-3-2V33l1-1a3 3 0 0 1 3-1Zm4 56V76H29v11ZM24 76H5v5a6 6 0 0 0 6 6h13V76Zm52-60V5H55v11Zm5-11v11h18v-5a6 6 0 0 0-6-6ZM50 16V5H29v11Zm-26 0V5H11a6 6 0 0 0-6 6v5Zm70 56a6 6 0 1 1-6 7 6 6 0 0 1 6-7Zm-1-8a14 14 0 1 1-13 16 14 14 0 0 1 13-16Z"}}`,
};
/**
* @param {string} name
* @param {boolean} value
* @returns {boolean}
*/
function saveOption(name, value) {
GM.setValue(name, value);
return (options[name] = value);
}
for (const name in options) {
const saved_option = await GM.getValue(name);
if (saved_option === undefined) {
saveOption(name, options[name]);
} else {
options[name] = saved_option;
}
}
/**
* @param {string} name
* @param {object} attributes
* @param {Array} append
* @returns {SVGElement}
*/
function createNS(name, attributes = {}, append = []) {
const el = document.createElementNS("http://www.w3.org/2000/svg", name);
for (const k in attributes) el.setAttributeNS(null, k, attributes[k]);
return el.append(...append), el;
}
for (const name in icons) {
const icon = JSON.parse(icons[name]);
icons[name] = createNS("svg", icon.svg, [createNS("path", icon.path)]);
}
/**
* @param {string} query
* @param {boolean} cache
* @returns {() => HTMLElement | null}
*/
function $(query, cache = true) {
let elem = null;
return (context = document) => {
return (cache && elem) || (elem = context.querySelector(query));
};
}
const allowedIds = ["movie_player", "shorts-player"];
const cachePlayers = new Map();
const cacheTextQuality = new Set();
const element = {
settings: $(".ytp-settings-menu"),
panel_settings: $(".ytp-settings-menu .ytp-panel-menu"),
quality_menu: $(".ytp-quality-menu", false),
movie_video: $("#movie_player video"),
short_video: $("#shorts-player video"),
popup: {
container: $("ytd-popup-container"),
menu: $("ytd-menu-service-item-renderer"),
},
// Reserve Element
premium_menu: document.createElement("div"),
};
/**
* @param {MutationCallback} callback
* @param {Node} target
* @param {MutationObserverInit | undefined} options
* @returns {MutationObserver}
*/
function observer(callback, target, options) {
const mutation = new MutationObserver(callback);
mutation.observe(target, options || { subtree: true, childList: true });
return mutation;
}
/**
* @param {string} label
* @returns {number}
*/
function parseLabel(label) {
return parseInt(label.slice(0, 4), 10);
}
/**
* @typedef {object} QualityData
* @property {any} formatId
* @property {string} qualityLabel
* @property {string} quality
* @property {boolean} isPlayable
*/
/**
* @typedef {object} Player
* @property {() => string} getPlaybackQualityLabel
* @property {() => QualityData[]} getAvailableQualityData
* @property {Function} setPlaybackQualityRange
*/
/**
* @param {HTMLElement & Player} player
* @returns {number}
*/
function getPreferredQuality(player) {
const currentMaxQuality = Math.max(
...player
.getAvailableQualityData()
.map((data) => parseLabel(data.qualityLabel))
);
return !isFinite(currentMaxQuality) ||
currentMaxQuality > options.preferred_quality
? options.preferred_quality
: currentMaxQuality;
}
/**
* @param {HTMLElement & Player} player
* @param {number} prefer
* @returns {QualityData}
*/
function getQuality(player, prefer) {
const q = { premium: null, normal: null };
const short = player.id.includes("short");
player.getAvailableQualityData().forEach((data) => {
const label = data.qualityLabel.toLowerCase();
if (parseLabel(label) == prefer && data.isPlayable) {
if (label.includes("premium")) q.premium = data;
else q.normal = data;
}
});
return (options.preferred_premium && !short && q.premium) || q.normal;
}
/**
* @param {HTMLVideoElement} video
* @returns {HTMLElement}
*/
function findPlayer(video) {
if (cachePlayers.has(video)) return cachePlayers.get(video);
let elem = video.parentElement;
while (elem && !allowedIds.includes(elem.id)) elem = elem.parentElement;
if (elem) cachePlayers.set(video, elem);
return elem;
}
function setVideoQuality() {
if (manualOverride) return;
if (isUpdated) return (isUpdated = false);
/** @type {Player} */
const player = findPlayer(this);
const label = player.getPlaybackQualityLabel();
const quality = parseLabel(label);
const preferred = getPreferredQuality(player);
const selected = getQuality(player, preferred);
if (
quality &&
listQuality.includes(quality) &&
(isUpdated = quality != preferred || selected.qualityLabel != label)
) {
player.setPlaybackQualityRange(
selected.quality,
selected.quality,
selected.formatId
);
}
}
function generateSimpleId() {
const randStr = () => Math.random().toString(36).slice(2, 3);
return [...Array(16)].map(randStr).join("");
}
function triggerSyncOptions() {
isUpdated = false;
const id = generateSimpleId();
GM.setValue("updated_id", id).then(() => (options.updated_id = id));
}
/**
* @param {string} className
* @param {Array} append
* @returns {HTMLDivElement}
*/
function itemElement(className = "", append = []) {
const el = document.createElement("div");
el.className = "ytp-menuitem" + (className ? "-" + className : "");
return el.append(...append), el;
}
function createMenuItem(svgIcon, textLabel, checkbox = false) {
const inner = checkbox ? [itemElement("toggle-checkbox")] : [];
const content = itemElement("content", inner);
const item = itemElement("", [
itemElement("icon", [svgIcon]),
itemElement("label", [textLabel]),
content,
]);
return { item, content };
}
/**
* @param {HTMLElement} element
* @param {boolean} state
*/
function setChecked(element, state) {
element.setAttribute("aria-checked", state);
}
function premiumMenu() {
const menu = createMenuItem(icons.premium, "Preferred Premium", true);
const optName = "preferred_premium";
setChecked(menu.item, options[optName]);
menu.item.addEventListener("click", function () {
setChecked(this, saveOption(optName, !options[optName]));
triggerSyncOptions();
setVideoQuality.call(element.movie_video());
});
return (element.premium_menu = menu.item);
}
/**
* @param {string} value
* @param {Text | undefined} text
*/
function setTextQuality(value, text) {
if (text && !cacheTextQuality.has(text)) cacheTextQuality.add(text);
cacheTextQuality.forEach((qualityText) => {
qualityText.textContent = value + "p";
});
}
/**
* @param {HTMLElement} content
* @param {HTMLVideoElement} video
*/
function qualityOption(content, video) {
const optName = "preferred_quality";
const text = document.createTextNode("");
Object.assign(content.style, {
cursor: "pointer",
fontWeight: 500,
textAlignLast: "justify",
});
setTextQuality(options[optName], text);
content.append("< ", text, " >");
content.addEventListener("click", function (ev) {
const threshold = this.clientWidth / 2;
const offset = this.getBoundingClientRect();
const clickPos = ev.clientX - offset.left;
let pos = listQuality.indexOf(options[optName]);
if (
(clickPos < threshold && pos > 0 && pos--) ||
(clickPos > threshold && pos < listQuality.length - 1 && ++pos)
) {
const newValue = saveOption(optName, listQuality[pos]);
setTextQuality(newValue);
triggerSyncOptions((manualOverride = false));
setVideoQuality.call(video);
}
});
}
function qualityMenu() {
const menu = createMenuItem(icons.quality, "Preferred Quality");
menu.item.style.cursor = "default";
menu.content.style.fontSize = "130%";
menu.content.style.wordSpacing = "2rem";
qualityOption(menu.content, element.movie_video());
return menu.item;
}
function shortQualityMenuStyle() {
const replaceList = {
"ytd-menu-service-item-renderer": ".ytp-menuitem-custom-element",
"tp-yt-paper-item": ".item",
"yt-icon": ".icon",
"yt-formatted-string": ".message",
};
const tags = Object.keys(replaceList);
const styleElement = document.createElement("style");
function replaceTag(css) {
css = css.replace(/\[system-icons\]|\[use-icons\]/gi, "");
for (const k in replaceList) {
css = css.replaceAll("." + k, "").replaceAll(k, replaceList[k]);
}
return css;
}
function replaceSelector(css) {
const split = css.split("{");
const selector = split[0].split(",").map((query) => {
query = query.trim();
const menu = replaceList[tags[0]];
if (!query.startsWith(menu)) query = menu + " " + query;
return query;
});
return selector.join(",") + "{" + split[1];
}
function checkSelector(selector) {
return (
selector &&
tags.some(
(tag) =>
!selector.includes(tag + "-") &&
!selector.includes("." + tag) &&
selector.includes(tag)
)
);
}
for (const styles of document.styleSheets) {
try {
for (const rule of styles.cssRules) {
if (checkSelector(rule.selectorText)) {
styleElement.textContent += replaceSelector(
replaceTag(rule.cssText)
);
}
}
} catch (e) {}
}
document.head.append(styleElement);
}
function shortQualityMenu() {
const options = itemElement(" message");
const menu = itemElement("custom-element", [
itemElement(" item", [
itemElement(" icon", [
itemElement(" yt-icon-shape yt-spec-icon-shape", [
icons.quality.cloneNode(true),
]),
]),
itemElement(" message", ["Preferred Quality"]),
options,
]),
]);
menu.style.userSelect = "none";
menu.style.cursor = "default";
options.style.paddingInline = "24px";
options.style.margin = 0;
options.style.minWidth = "100px";
qualityOption(options, element.short_video());
return menu;
}
/**
* @param {MouseEvent} ev
*/
function setOverride(ev) {
const menu = element.quality_menu();
const quality = parseLabel(ev.target.textContent);
if (menu && listQuality.includes(quality)) manualOverride = true;
}
/**
* @param {HTMLVideoElement} video
*/
function addVideoListener(video) {
if (cachePlayers.has(video) || !findPlayer(video)) return;
const fn = setVideoQuality.bind(video);
video.addEventListener("play", () => setTimeout(fn, 200));
video.addEventListener("resize", fn);
}
/**
* @param {CustomEvent} ev
*/
function playerUpdated(ev) {
const target = ev.target;
if (allowedIds.some((id) => target.querySelector("#" + id))) {
isUpdated = false;
manualOverride = false;
addVideoListener(target.querySelector("video"));
}
}
async function syncOptions() {
if ((await GM.getValue("updated_id")) != options.updated_id) {
isUpdated = false;
for (const name in options) options[name] = await GM.getValue(name);
setChecked(element.premium_menu, options.preferred_premium);
setTextQuality(options.preferred_quality);
for (const [video] of cachePlayers) {
if (!video.paused) setVideoQuality.call(video);
}
}
}
(function checkOptions() {
setTimeout(() => syncOptions().then(checkOptions), 1e3);
})();
observer((_, observe) => {
const movie = element.movie_video();
const short = element.short_video();
if (short) addVideoListener(short);
if (movie) {
addVideoListener(movie);
element.panel_settings().append(premiumMenu(), qualityMenu());
element.settings().addEventListener("click", setOverride, true);
document.addEventListener("yt-player-updated", playerUpdated);
observe.disconnect();
}
}, document.body);
observer((_, observe) => {
const container = element.popup.container();
if (container) {
observer((_, observe) => {
const menu = element.popup.menu(container);
if (menu) {
shortQualityMenuStyle();
const item = menu.parentElement;
item.append(shortQualityMenu());
observe.disconnect();
}
}, container);
observe.disconnect();
}
}, document.body);
})();