I download Cucusoft Ultimate DVD + Video Converter Suite to convert DVD's and videos to play on my ipod video , it can support almost any portable device including iPod, iPhone, Zune, PSP, video capable MP3 players, video capable mobile phones, and Pocket P.C., etc.
I think it is powerful , maybe you need it , I download it at http://www.oursdownload.com/dvd-video-converter.html