mkvtoolnix 8.8.0-1 (s390x binary) in ubuntu xenial

 Matroska is a new multimedia container format, based on EBML (Extensible
 Binary Meta Language), which is a kind of binary XML.
 These tools allow one to manipulate Matroska files.
  * mkvmerge is a tool to create Matroska files from other formats
  * mkvinfo allow one to get information about the tracks in a Matroska file
  * mkvextract can extract tracks from Matroska files to other formats
 .
 This package only provides command-line tools. For graphical tools, you
 should install the mkvtoolnix-gui package.