Userscripts.org

There are 3 previous versions of this script.

// ==UserScript==
// @name           Megaporn Download
// @namespace      download
// @include        http://www.megaporn.com/video/?v=*
// @include        http://www.megavideo.com/?v=*
// @author         download
// ==/UserScript==

/*
Look at the bottom of the page for the download link.
*/

function decrypt(str,key1,key2)
{
	var a=[],b=[];
	for(i=0;i<str.length;i++)
	{
		v=parseInt(str.charAt(i),16).toString(2);
		while(v.length<4) v="0"+v;
		a.push(v);
	}
	a=a.join("").split("");
	for(i=0;i<384;i++)
	{
		key1=(key1*11+77213)%81371;
		key2=(key2*17+92717)%192811;
		b[i]=(key1+key2)%128;
	}
	for(i=256;i>=0;i--)
	{
		var c=b[i];
		var d=i%128;
		var e=a[c];
		a[c]=a[d];
		a[d]=e;
	}
	for(i=0;i<128;i++)
	{
		a[i]=a[i]^b[i+256]&1;
	}
	var f=a.join("");
	var b=[];
	for(i=0;i<f.length;i+=4)
	{
		var _loc9=f.substr(i,4);
		b.push(_loc9);
	}
	f=[];
	for(i=0;i<b.length;i++)
	{
		f.push(parseInt(b[i],2).toString(16));
	}
	return f.join("");
}

var m=document.images[0];
m.parentNode.removeChild(m);
document.title="MP Vid";
var t=document.getElementsByTagName("script")[11].textContent;
var un=t.match(new RegExp("flashvars.un \= \"(.*?)\""))[1];
var k1=t.match(new RegExp("flashvars.k1 \= \"(.*?)\""))[1];
var k2=t.match(new RegExp("flashvars.k2 \= \"(.*?)\""))[1];
var s=t.match(new RegExp("flashvars.s \= \"(.*?)\""))[1];
var url="http://www"+s+".megaporn.com/files/"+decrypt(un,k1,k2)+"/";
var li=document.createElement("a");
li.setAttribute("href",url);
li.textContent="Download Video";
document.body.appendChild(li);

function dl_mpd(){window.location.href=url;}

GM_registerMenuCommand("Download Video",dl_mpd);