narcotx

// Run from the dev tools console of any Youtube video
// Accurate as of June 12, 2016
var videoUrls = {};
ytplayer.config.args.url_encoded_fmt_stream_map.split(',').forEach(function (item) {
  var obj = {};

  item.split('&').forEach(function (param) {
    param = param.split('=');
    obj[param[0]] = decodeURIComponent(param[1]);
  });

geuis

// Run from the dev tools console of any Youtube video
// Accurate as of July 2, 2020.
//
// Copy and paste this into the dev console in a browser with the desired video loaded.
//
// NOTE: Some Youtube videos do not directly expose the video url in the response. 
// This script doesn't currently attempt to handle those. It will work for most other general video types though.

(async () => {
  const html = await fetch(window.location.href).then((resp) => resp.text()).then((text) => text);