video extraction utility for YouTube, Google Video and others

 clive is a command line utility for extracting videos from Youtube and other
 video sharing Web sites. It was originally written to bypass the Adobe Flash
 requirement needed to view the hosted videos. It is non-interactive, meaning
 it can work in the background while the user is not logged on. This allows the
 user to start an extraction and disconnect from the system, letting clive
 finish the work.