Removes the RUDO video player (www.digitalproserver.com/rudo) and replaces it by the corresponding youtube video

rudo_remover.user.js

// ==UserScript==
// @name         RUDO player remover
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Removes the RUDO video player (www.digitalproserver.com/rudo) and replaces it by the corresponding youtube video
// @author       Alter Lagos
// @match        *://rudo.video/*
// @grant        none
// ==/UserScript==

(function() {
  'use strict';
  if (window.top !== window.self) {
    const scripts = window.self.document.getElementsByTagName('script');
    let ytId, match;
    let i = 0;
    while (ytId == undefined && i < scripts.length) {
      match = scripts[i].innerHTML.match(/youtube\.com\/watch\?v=(.*)'/);
      if (match !== null) {
        ytId = match[1];
      }
      i++;
    }
    if (ytId !== undefined) {
      const body = window.self.document.body;

      var template = document.createElement('template');
      template.innerHTML = '<iframe allowfullscreen></iframe>';
      var ytIframe = template.content.firstChild;
      ytIframe.src = "https://www.youtube.com/embed/" + ytId;
      ytIframe.style = 'border: none; height: 100vh; width: 100vw;';
      ytIframe.frameborder = "0";
      ytIframe.allow = "autoplay; encrypted-media";

      body.innerHTML = '';
      body.appendChild(ytIframe);
    }
  }
})();