This is the Technical Section of matroska.
Here you can find
- precise graphical description and documentation of the matroska file header and bitstream structure
- a list of all currently supported codecs, including their ID numbers in matroska track headers
- a overhead calculation, depending on the number of frames, lacing, etc.
- the draft for a matroska codec API ( transor API to connect to matroska files from codecs and transformatters )