That would be DVDSHRINK and IFOEDIT. A companion to this would be DVD DECRYPTER.
I offer NO SUPPORT for these programs, but they will do as you ask.
What is the best program (if any) for simply copying the trailers from commercial DVD's. I have a large collection, and I would like to burn a DVD which would contain all the trailers for the movies I own. I know the films are copy protected, and I do not wish to copy the films themselves...just the trailers.
Or...is there a place where you can download movie trailers?