You mention Mac the Ripper, but that's a program for ripping DVD content - not for creating DVDs.
On a Mac you can use iDVD, Toast, Popcorn, Compressor, Bit Vice, Sorenson Squeeze Suite, Cleaner and a few others for compressing/encoding. iDVD is a complete, consumer level DVD encoding, authoring and burning app included with the iLife applications.
-DH