MKVToolnix -- Cross-platform tools for Matroska. 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.

Program Information Category: Multimedia Type: Free Version: 4.6.0 Size: 5.94MB Works on: Windows, Mac, Linux Product page: here