SELectureOptimizer.js


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// ==UserScript==
// @name         SE Lecture optimizer
// @namespace    http://tampermonkey.net/
// @version      1.0
// @date         2020-04-25
// @description  Removes the autoplay and autobuffer from the videos of the SE Lecture page. So no more loading of 20 videos simultaniously to watch 1 video.
// @author       Leonard Kugis
// @homepage     https://collaborating.tuhh.de/cev7691/SELectureOptimizer
// @match        https://media.tuhh.de/e16/Lecture-SE/
// @grant        none
// ==/UserScript==

(function() {
    var videos = Array.from(document.getElementsByTagName("video"));
    for(var i = 0; i < videos.length; i++) {
        videos[i].pause(0);
        var src = videos[i].src;
        videos[i].removeAttribute("src");
        videos[i].load();
        var old = videos[i];
        videos[i] = document.createElement("video");
        videos[i].setAttribute("preload", "none");
        videos[i].setAttribute("controls", "");
        videos[i].setAttribute("src", src);
        old.parentNode.replaceChild(videos[i], old);
    }
})();