MythTV is an open source DVR solution that supports recording of live video broadcast and playback of recorded material. It also supports the direct import of DVD content. But if you’ve got multiple DVD players spread across different computer systems and a need to control disk space usage on your MythTV backend, AcidRip offers a more flexible option.
DVD’s contain a number of files, the most important of which to the average home user are the transport stream files which contain the video and audio content. MythTV and its video plugin, MythVideo, will playback video in a variety of file formats.
http://www.linuxlinks.com/portal/news/article.php?story=20080626140132963