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YouTube - Indicatore del tempo rimanente

Mostra la durata rimanente di un video di YouTube accanto alla durata del video, tenendo conto della velocità di riproduzione.

Installa questo script?
Script suggerito dall'autore

Potresti essere interessato/a anche a YouTube - Cursore della velocità di riproduzione

Installa questo script 
// ==UserScript==
// @name                          YouTube - Remaining Time Indicator
// @name:fr                       YouTube - Indicateur du temps restant
// @name:es                       YouTube - Indicador de tiempo restante
// @name:de                       YouTube - Anzeige der verbleibenden Zeit
// @name:it                       YouTube - Indicatore del tempo rimanente
// @name:zh-CN                    YouTube - 剩余时间指示器
// @namespace                     https://gist.github.com/4lrick/cf14cf267684f06c1b7bc559ddf2b943
// @version                       1.9
// @description                   Displays the remaining duration of a YouTube video next to the video duration, taking into account the playback rate.
// @description:fr                Affiche la durée restante d'une vidéo YouTube à côté de la durée de la vidéo, en tenant compte de la vitesse de lecture.
// @description:es                Muestra la duración restante de un video de YouTube junto a la duración del video, teniendo en cuenta la velocidad de reproducción.
// @description:de                Zeigt die verbleibende Dauer eines YouTube-Videos neben der Videodauer an und berücksichtigt dabei die Wiedergabegeschwindigkeit.
// @description:it                Mostra la durata rimanente di un video di YouTube accanto alla durata del video, tenendo conto della velocità di riproduzione.
// @description:zh-CN             在视频时长旁边显示YouTube视频的剩余时长，考虑播放速度。
// @author                        4lrick
// @match                         https://www.youtube.com/*
// @icon                          https://www.google.com/s2/favicons?sz=64&domain=youtube.com
// @grant                         none
// @license                       GPL-3.0-only
// ==/UserScript==

(function() {
    'use strict';
    let timeDisplay;

    function createTimeDisplayElement() {
        const timeDisplayElement = document.createElement('span');

        timeDisplayElement.style.display = 'inline-block';
        timeDisplayElement.style.marginLeft = '10px';
        timeDisplayElement.style.color = '#ddd';

        return timeDisplayElement;
    }

    function displayRemainingTime() {
        const videoElement = document.querySelector('video');
        const isLive = document.querySelector('.ytp-time-display')?.classList.contains('ytp-live');
        const timeContainer = document.querySelector('.ytp-time-contents');

        if (videoElement && !isLive && timeContainer) {
            if (!timeDisplay) {
                timeDisplay = createTimeDisplayElement();
                timeContainer.appendChild(timeDisplay);
            }

            const timeRemaining = (videoElement.duration - videoElement.currentTime) / videoElement.playbackRate;
            const hours = Math.floor(timeRemaining / 3600);
            const minutes = Math.floor((timeRemaining % 3600) / 60);
            const seconds = Math.floor(timeRemaining % 60);

            timeDisplay.textContent = `(${hours > 0 ? `${hours}:` : ''}${minutes.toString().padStart(2, '0')}:${seconds.toString().padStart(2, '0')})`;
        } else if (timeDisplay) {
            timeDisplay.remove();
            timeDisplay = null;
        }

        requestAnimationFrame(displayRemainingTime);
    }


    function initRemainingCounter() {
        const timeContainer = document.querySelector('.ytp-time-contents');

        if (timeContainer) {
            timeDisplay = createTimeDisplayElement();
            timeContainer.appendChild(timeDisplay);
            requestAnimationFrame(displayRemainingTime);
            observer.disconnect();
        }
    }

    function checkVideoExists() {
        const videoElement = document.querySelector('video');

        if (videoElement) {
            initRemainingCounter();
        }
    }

    const observer = new MutationObserver(checkVideoExists);
    observer.observe(document.body, { childList: true, subtree: true });
})();