HandBrake is a multi-platform, open-source, multi-threaded DVD to MPEG-4 converter. It can be used with Mac OS, Windows, and Linux. It is very user-friendly. I have been using this software to convert the videos that we make in our Interactive Video Network (IVN) rooms to make them accessible online for instructors and students. Using this software in no way releases the user of being liable for copyright infringement. Before using this software to convert a DVD, the user should make sure that doing so will not violate any copyright laws.