To download any video from You-tube there is a very simple process and it's really working as I myself tried it. best of all is that the method which I gonna tell you gives you freedom of not installing any unknown software on your PC.
- First of all search for the video you want to download on You-tube.
- Then copy the URL of video
- Then edit the URL a little. I mean in place of youtube, type savevid.
Example: If you want to download a video with URL -
"http://www.youtube.com/watch?v=M3Mb-cnL7aY"
then in place of youtube type savevid i.e.
"http://www.savevid.com/watch?v=M3Mb-cnL7aY" - Then you'll be redirected to a page. Choose the video format your player support and download.