[Ulukia]

Does anyone know of an app to convert a Matroska (.mkv) video to a usable format, for Blackberry of course, plus keeping the subtitles intact? If I had the subtitles as a separate file then this would not be a big deal, however the subtitles are embedded in the video file. Granted I could extract the subtitles manually and convert the video while infusing the subtitles back in. So, any help would be appreciated.