Download any video from Youtube.com without installing any software.

All you need to download videos from YouTube.com, its very simple you can download it in his place by removing y and type 3.

If you know of such video URL
http://youtube.com/watch/?vxxxxxxxxxxx
So by changing it in the address bar
http://3outube.com/watch/?vxxxxxxxxxxx
Give to the press and

A new window will popup which will ask you which format that you want to download video (such as MP4 (SD), MP4 (HD), FLV (LQ), FLV (HQ), FLV (HD), AVI, MP3) in this Click on your preferred format will be downloading your video.

Do this on your Risk.

Thanks :)
Nilesh Parmar