Clipgrab is an program that downloads videos from popular online video sites like youtube, vimeo ect and saves the video in the format of your choice. The application is very straight forward to use and provides a good set of options that make it easy for the user to customize their download.
Clipgrab requires the user to simply type in the url of the video. This can be copied from the web browser. Once done, Clipgrab gives the details of the video including the different sizes its available for download and the different formats it can be converted to. Hit the “Grab this Clip!” option to download the video.
Clipgrab also monitors your clipboard to pick up urls when ever they are copied. Then it throws a notification asking you if you want to download the clip.
For ubuntu systems you can use the PPA repository to download Clipgrab:
sudo add-apt-repository ppa:clipgrab-team/ppa
sudo apt-get update
sudo apt-get install clipgrab