Most people use DVD2one software for removing unwanted stuff on DVD movies.
For example:
Most of todays DVD movies won't fit on one blank DVD (4.7Gig), so DVD2one is great to remove stuff like subtiltes, soundtracks etc.
After using DVD2one you can fit 9Gig movie to a 4.7Gig blank DVD (In fact....its only 4.38Gig..but thats a diffrent story..lol)......
For the best info about this subject go to
http://www.dvdrhelp.com/dvdripping
GOODLUCK.......BIGpol