Hello Friend you watch all the youtube site videos and other video provided sites. You think how can I download these all video in to my pc. Than here is the solution with any software you can download all the youtube and other video site videos. Just click blow links copy and past your favorite video url and get in to your computer free of cost.

http://keepvid.com/
http://www.downloadyoutubevideos.com/
http://vixy.net/

Enjoy Friends.