KeepHD is a free tool that lets you download High Def videos off the Youtube!. Not only can you download HD copies of your favorite movies, you can also download the mobile 3GP video version for your mobile devices plus the standard MP4 and FLV format videos. Just enter your Youtube video URL , and [...]

Download as Mp4 Download Youtube.com videos as mp4 video files This bookmarklet that can be used in Firefox, Opera and Microsoft I E. 2) Right click and click “bookmark this link” via ghacks.net