Download Youtube Videos

By download — Last update Nov 20, 2009 — Installed 5,327 times. Daily Installs: 44, 37, 17, 18, 6, 7, 4, 5, 4, 4, 12, 4, 0, 5, 3, 5, 4, 2, 7, 161, 129, 103, 121, 84, 67, 156, 57, 31, 34, 58, 36, 32

There are 6 previous versions of this script. 

// ==UserScript==
// @name           Download Youtube Videos
// @namespace      youtube
// @description    Downloads youtube videos
// @include        http://youtube.com/watch?v=*
// @include        http://*.youtube.com/watch*
// ==/UserScript==


var frmts={5:"Regular Quality FLV",6:"High Quality FLV",13:"3GP Cell Phone (No Sound)",17:"3GP Cell Phone (With Sound)",18:"MP4 iPod Compatible",22:"720p High Def Video",37:"1080p High Def Video"};
var url,s;
var vid=window.location.href.match(new RegExp(".*?v=([a-zA-Z0-9]+)"))[1];
var dl=document.createElement("a");
dl.textContent="Download";
dl.style.setProperty("text-decoration","none",null);
dl.style.setProperty("font-size","12pt",null);
if(vid.indexOf("&")!=-1) vid=vid.substr(0,vid.indexOf("&"));
GM_xmlhttpRequest(
{
	method:"GET",
	url:"http://www.youtube.com/get_video_info?&video_id="+vid,
	onload:function(r)
	{
		var token=r.responseText.match(new RegExp(".*?&token=([a-zA-Z0-9_\\-+/=%]+)"))[1];
		url="http://youtube.com/get_video?video_id="+vid+"&t="+token+"&fmt=";
		s=document.createElement("select");
		var vta=document.getElementById('watch-vid-title');
		vta.appendChild(s);
		for(i in frmts)
		{
			var t=document.createElement("option");
			t.value=i;
			t.innerHTML=frmts[i];
			s.appendChild(t);
		}
		s.addEventListener("change",changeURL,false);
		vta.appendChild(dl);
		changeURL();
	}
});

function changeURL(e)
{
	dl.href=url+s.value;
}