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. Matroska is a new multimedia file format aiming to become THE new container format for the future. You can find more information about it and its underlying technology, the Extensible Binary Meta Language (EBML), at http://www.matroska.org/
Build system: configure will now check for Qt by default. If at least v5.2.0 is found then the Qt versions of mkvinfo's GUI and the new mkvtoolnix-gui will be enabled. You can affect this detection with the options --disable-gui (turns off all GUIs; works the same as before), --disable-qt (will compile the wxWidgets GUI for mkvinfo and mmg) and --without-mkvtoolnix-gui (will compile the Qt version of mkvinfo's GUI but no mkvtoolnix-gui).