I have an iPod Touch 2nd G as well as i do not wish to take a risk of jailbreaking it. So i wish to download cinema upon my iPod but regulating a computer, by regulating a iPod itself. Can i do which or do i have to jailbreak it???
please answer my subject as shortly as possible.
Thank You!

No, as long as the movie is mp4 video, you can add it into iTunes library and sync it to your iPod touch.
If you want to know how to convert video and put DVD movie on iPod, I think this step by step guide would help you
http://www.reviewstown.com/how-to-convert-dvd-video-to-ipod.html
Hope it helps. Contact me if you have any other question or use http://www.ask.com to search more answers.
Try http://moviedownloadsnet.com