YouTube Music Opus Codec

Force YouTube Music to use the Opus codec by blocking AAC.

K instalaci tototo skriptu si budete muset nainstalovat rozšíření jako Tampermonkey, Greasemonkey nebo Violentmonkey.

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

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Userscripts.

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

K instalaci tohoto skriptu si budete muset nainstalovat manažer uživatelských skriptů.

(Už mám manažer uživatelských skriptů, nechte mě ho nainstalovat!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(Už mám manažer uživatelských stylů, nechte mě ho nainstalovat!)

// ==UserScript==
// @name                YouTube Music Opus Codec
// @icon                https://www.google.com/s2/favicons?sz=64&domain=music.youtube.com
// @author              ElectroKnight22
// @namespace           electroknight22_youtube_music_opus_codec_namespace
// @version             3.0.0
// @description         Force YouTube Music to use the Opus codec by blocking AAC.
// @match               *://music.youtube.com/*
// @run-at              document-start
// @grant               none
// @inject-into         page
// @license             MIT
// ==/UserScript==

/*jshint esversion: 11 */

(function () {
    'use strict';

    // Modern Logic
    if (window.MediaSource) {
        const originalIsTypeSupported = window.MediaSource.isTypeSupported;
        window.MediaSource.isTypeSupported = function (mime) {
            // Block AAC to force YTM to default to Opus.
            if (typeof mime === 'string' && (mime.includes('mp4a') || mime.includes('aac'))) return false;
            return originalIsTypeSupported.call(this, mime);
        };
    }

    // Legacy Fallback Logic
    const originalCanPlayType = window.HTMLMediaElement.prototype.canPlayType;
    window.HTMLMediaElement.prototype.canPlayType = function (mime) {
        // Block AAC to force YTM to default to Opus.
        if (typeof mime === 'string' && (mime.includes('mp4a') || mime.includes('aac'))) return '';
        return originalCanPlayType.call(this, mime);
    };

})();