Basically what the title implies. I have heard good things about this APP, and havent been able to find a thorough description about it or what it does exactly (I couldnt understand what this means "HandBrake is a GPL'd multiplatform, multithreaded DVD to MPEG-4 ripper/converter. HandBrake was originally available on the BeOS, but now has been ported over to MacOS X and to GNU/Linux. A Windows port is being worked on. " Taken from the handbrake website.