What is a good video converter to make videos the right format for my ipod?

I have an ipod touch 2nd gen. and I want a video converter so i can put movies and tv shows onto my ipod. I will mostly be using dvds that i purchased from stores. Please reccomend one that you have had success with and costs no money. Thnx. I'd like to recommend this ipod converter to you, I always use it to convert DVD movie and video to mp4 video to my iPod, the conversion speed is really fast and the video quality is good. It also build-in an iPod transfer youtube download flv that can upload music and video to iPod directly, that's pretty cool, you may download it for a try