iLounge looks at the options for encoding video for the new video iPod: “iPod-Ready Videos? Not So Fast, and Not So Clear.” QuickTime 7.0.3 adds an export option to QuickTime (and therefore, to applications such as iMovie) to encode video for iPod, but you don’t get to customize its settings. Jeremy Horowitz performed a bunch of tests to see how long it takes to encode, and what the quality of the results was.

how do i put dvd on to my ipod?
Download a copy of HandBrake, which will rip a DVD and save it in a format that the iPod with video can read.
http://handbrake.m0k.org/