QuickTime comes pre-installed on every Mac for free, and you may have heard that the MP4 format is actually based on the QuickTime format, so it would seem like the perfect tool to convert a DVD to MP4 on a Mac for free. Unfortunately, the number of media file formats that QuickTime supports is limited, and VOB files, which are used by DVDs to encode video, are not included in that list. So while QuickTime can make an excellent MP4 converter on a Mac for some file formats, you'll have to look elsewhere when looking for Mac DVD converters. Thankfully, there are some great free options on this list that will convert DVD to MP4. VLC even makes a great replacement media player for QuickTime, due to its extensive media codec support, and it can rip from DVD to MP4 on a Mac.
To read user reviews of the program, follow the link below.
Reviews on MacUpdate