Youtube Videos Downloading Mathod

Hello Guys Here Im Telling You A Easyest Youtube VideosDownloading Mathod                                                   

In This MathoD We Have To Remove (www.) From The Video Url nd At The Place Of www. We Have To Add ss
For Example :
This Is Simple Url :
http://www.youtube.com/watch?v=MC9uLW_Vznk
Now What We Have To Change IN Given url :
http://SSyoutube.com/watch?v=MC9uLW_Vznk
After Putting SS At The Place Of www. Just Press Enter Nd Enjoy Downloading