Youtube Video Max Volume Patch

Override the html5 video volume to 1 when player's volume slider is set to 100%.

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 Video Max Volume Patch
// @namespace    http://github.com/jaytohe/
// @version      0.2
// @description  Override the html5 video volume to 1 when player's volume slider is set to 100%.
// @author       jaytohe
// @license      MIT
// @match        https://www.youtube.com/*
// @run-at       document-idle
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    const curr_volume = () => document.querySelector('div[class^="ytp-volume-panel"]').getAttribute('aria-valuenow');
    const get_video = () => document.querySelector('video[src]'); //video[src] is used to prevent accidental firing on bogus video in homepage

    const forceMaxVol = (event) => {
        if (curr_volume() === '100') {
            event.target.volume = 1;
        }

    }
    const initHijack = (video) => {
        if (video !== null && curr_volume() !== null) {
            console.log('Patching max volume...');

            if (curr_volume() === '100') //in case video autoplays
                video.volume = 1;

            if (video.onplay === null)
                video.onplay = forceMaxVol;

            if(video.onvolumechange === null)
                video.onvolumechange = forceMaxVol;
        }
    }
    const wait_for_video = setInterval(function() {
        if (get_video() !== null) {
            console.log('[YOTUBE MAX VOLUME PATCH] -- FOUND VIDEO.');
            setTimeout(()=>initHijack(get_video()), 1000);
            clearInterval(wait_for_video);
        }
    }, 500);
})();