// ==UserScript==
// @name        youtube unblocker
// @namespace   OaAory
// @description Test script
// @include     /^https?://.*$/
// @version     1
// @grant       none
// ==/UserScript==

var links = document.getElementsByTagName("a");
var re= /^(https?:\/\/)[^.]+\.(youtube\.com\/watch\?v=)(.[^&]+)$/i;
for (var i=0; i<links.length; i++) {
   links[i].href = links[i].href.replace(re,"$1tubeunblock.net\/watch\?v=$3");
}