MKVToolnix is a set of tools to create, alter and inspect Matroska files under Linux, other Unices and Windows. They do for Matroska what the OGMtools do for the OGM format and then some.
It's really amazing and good-working.
perfect. intuitive, does everything for combining or stripping audio, video and subtitles in matroska format.
if they add in ability for more video types to be muxed into mkv container it will be even more perfect.