it depends what kind of video and where you live. if you live in america and have itunes, you can get movies, music videos, tv shows, etc for a small amount of money.
if in england, then we havent gotten tv shows and movies yet, but we have music videos.
dvds and co are not usable because if it is one that you have bought, then its protected, and cannot be copied onto itunes, ipod, etc. recordable dvds are different. they might work but i havent had the opportunity to try.
hope that helps.