Came across this the other day. Matroska files (.mks) are containers for one or more tracks. Sort of like when you have .vob files from a DVD you can have multiple audio tracks, video tracks, and subtitles.
One of the problems with converting movies to divx or xvid is that you lose those options - you generally have to pick which audio track you want and if you choose a subtitle it will always be displayed. Matroska files allow you to encode the video to mpeg4 getting the benefits of the compression and then during playback choose multiple audio tracks and/or subtitles. Anyone played around with this? Seems like a good idea for a HTPC if you don't have the storage for all your movies in vob form but still want all the cool menus, features, and subtitles. -- Brian
