YouTube Auto Resume

YouTube Continue

Resume YouTube videos where you left off.
当前为 2018-03-13 提交的版本，查看最新版本。
换行
// ==UserScript==
// @name         YouTube Continue
// @namespace    https://greasyfork.org/en/users/68133-nevertheless
// @version      1.05
// @description  Resume YouTube videos where you left off.
// @author       Nevertheless
// @license      MIT
// @match        *://www.youtube.com/*
// @exclude      *://www.youtube.com/tv*
// @exclude      *://www.youtube.com/live_chat*
// @run-at       document-idle
// @grant        GM_getValue
// @grant        GM_setValue
// @noframes
// ==/UserScript==

var doc = document;
var win = window;
var old_addr = win.location.href;
var player = null;
var video_id = null;
var video_duration = null;
var initialResumeDone = false;

if (win.frameElement) throw new Error("Stopped JavaScript.");


function getPlayer() {
    player = doc.getElementById("movie_player");
    if (typeof player === undefined || player === null) {
        console.warn("[Youtube Resume] Player not defined.");
        return;
    } else {
        video_id = player.getVideoData().video_id;
        video_duration = player.getDuration();
        if (old_addr != win.location.href) {
            initialResumeDone = false;
            old_addr = win.location.href;
        }

        if (!initialResumeDone)
            resumeVideo();
        else
            saveProgress();
    }
}

function getSavedProgress() {
    return GM_getValue("p_" + video_id, 0);
}

function resumeVideo() {
    var resume_to = getSavedProgress();
    var should_resume = true;
    video_duration = player.getDuration();

    if (video_duration > 0) {
        should_resume = (video_duration - resume_to) >= video_duration * 0.05;
    }

    // if (resume_to > 10) {
    //     resume_to -= 5;
    // }

    if (should_resume) {
        player.seekTo(resume_to, true);
    }

    var currentTime = player.getCurrentTime();

    if (currentTime >= resume_to || resume_to <= 0) {
        initialResumeDone = true;
    }
}

function saveProgress() {
    GM_setValue("p_" + video_id, player.getCurrentTime());
}


win.setInterval(getPlayer, 3000);
getPlayer();