MKVToolnix: cross-platform tools for Matroska. With these tools one can get information about (mkvinfo) Matroska files, extract tracks/data from (mkvextract) Matroska files and create (mkvmerge) Matroska files from other media files. Available flavor: no_x11 - do not build the Qt 5 frontend
WWW: https://www.bunkus.org/videotools/mkvtoolnix/