free Filter for Matroska (MVK) files Matroska is a cross-platform, patent-free, open-source media file format, which is even newer than OGM.

Matroska is not a codec (like MPEG-1, XviD, DivX, or VP3), but a container (like OGM) where you can put video(s) + audio(s) + sub(s). Supported audio formats include Ogg Vorbis, AAC, MP3, and AC3.

Here are some key features of "Lazy Mans MKV":