HandBrake is good to convert mpeg video into a mpeg-4 video file in .mp4 or .mkv. And the best part about it is, Free. But the output choices are limited. And u have to calculate Handbrake video Bitrate/Quality settings (target size, average bitrate, constant quality) when ripping DVD and converting videos, making it rather difficult and time-consuming for converting. I think, u could try macx dvd ripper, it covers handbrake's funtions well and make up for its disadvanges. From my point of view, it is at least one of the best that ive used.