Rose: I think AVI or MP4 is better, anyway , first rip dvd movies with one dvd ripper software such as super dvd ripper , then use a video trimmer software for trim that movie , but i think all of software in this case are shareware , so using crack version of this software is my offer.
use this website for find some full version(setup file + crack ) of this software(or everything else ;) ):
www.rapidshared.org