From LinuxIntro

ffmpeg is a program that allows you to do video conversion.

Get it

To download, compile, link and install ffmpeg, open a console and enter

svn co svn://svn.mplayerhq.hu/ffmpeg/trunk ffmpeg
cd ffmpeg
./configure && make && make install

Use it

• list all available formats

ffmpeg -formats

• convert input.dv to output.mpg

ffmpeg -i input.dv output.mpg

See also

• ffmpeg man page