[ Thanks to ubuntuportal for this link.
]
“Movgrab is a command line tool that allow to downloading video
clips from websites video streaming such as YouTube, Vimeo,
Blip.tv,Daily Motion, Break.com, Liveleak and More ..“Movegrab has no dependencies with another program or library,
everything that?s needed should be there in the tar.gz package.
Movgrab can connect through an HTTP proxy, can output the download
to stdout for piping into another program, and can fork into the
background to free up the console. When Movgrab forked into the
background, its progress can still be seen in a ps list.”