You need several different tools, including a stream demuxer, AC3 decoder, MPEG decoder, and then a tool to combine and sync the audio and video together. Often, even with the right tools, it's impossible to properly "rip" DVDs on the Mac. Also, some DVDs just don't play nice with the current tools. My Planet of the Apes DVD is one that just
refuses to rip correctly.
Here are some app names to look for: mAC3dec, OSEx, QT Mutator, yade, MacMPEG2Decoder, and DVDExtractor.
Good luck.
