Hello Linux Geeksters. As you may know, MKVToolNix is a Matroska (mkv) multimedia manipulation tool pack. You can edit mkv video files, split files, sync audio with video.

It contains the following command-line tools:
- mkvmerge – a tool for creating Matroska files from other formats
- mkvinfo – a tool that the users to get information about the tracks in a Matroska file
- mkvextract – a tool that extracts tracks from Matroska files to other formats
The latest version available is MKVToolNix 7.6, which has been recently released, coming with the below fixes:
- all programs: bug fix: Since release 7.0.0 the wrong exit code was used when warnings were finished (0 instead of 1).
- mkvmerge: bug fix: Appending chapters with the same chapter UID was dropping all sub-chapters from the one of the two merged chapters. Now the sub-chapters are merged recursively as well.
- mkvmerge: bug fix: The wrong Codec ID was written when reading PCM tracks from Matroska files in Big Endian byte order.
- all: new feature: added a Serbian (Latin) translation of the programs by Danko (see AUTHORS).
- mkvmerge: bug fix: If splitting was active and AC3 tracks read from Matroska files were shorter than a split point then the following output file would contain an AC3 packet with the timecode of 00:00:00 somewhere in the middle.
- mmg: bug fix: If a chapter track from a Matroska file is selected then the »language« drop-down box is disabled.
- mkvmerge: bug fix: On Windows the end-of-file-reached status wasn’t tracked correctly for certain file operations. This could manifest in e.g. mkvmerge not finding tracks in MPEG transport streams when probing MPLS playlist files.
- mmg: bug fix: When scanning for play lists the window presenting the results listed some properties in an unescaped way (e.g. »\s« instead of spaces).
- mmg: bug fix: When adding MPLS files mmg was only offering to scan for more playlists if there were at least two additional MPLS files present. This has been fixed to one MPLS file (in addition to the one just added).
In this article I will show you how to install MKVToolNix 7.6 on Ubuntu 14.10 Utopic Unicorn, Ubuntu 14.04 Trusty Tahr, Linux Mint 17.1 Rebecca, Linux Mint 17 Qiana, Pinguy OS 14.04, Elementary OS 0.3 Freya, Peppermint Five, Deepin 2014, LXLE 14.04, Linux Lite 2.0, Debian Jessie, Debian Wheezy and other Ubuntu 14.04 derivative systems.
Because it is available via repository, installing MKVToolNix 7.6 on Ubuntu, Debian and derivative systems is easy. All you have to do is add the repository to your system, download and import the key, update the local repository index and install the mkvtoolnix and mkvtoolnix-gui.
Follow the instructions for your system exactly, in order to get a successful installation.
How to install MKVToolNix 7.6 on Ubuntu 14.10 and derivative systems:
$ wget -q -O - https://www.bunkus.org/gpg-pub-moritzbunkus.txt | sudo apt-key add -
$ sudo sh -c 'echo "deb http://www.bunkus.org/ubuntu/utopic/ ./" >> /etc/apt/sources.list'
$ sudo apt-get update
$ sudo apt-get install mkvtoolnix mkvtoolnix-gui
Optional, to remove mkvtoolnix and mkvtoolnix-gui, do:
$ sudo apt-get remove mkvtoolnix mkvtoolnix-gui
How to install MKVToolNix 7.6 on Ubuntu 14.04 and derivative systems:
$ wget -q -O - https://www.bunkus.org/gpg-pub-moritzbunkus.txt | sudo apt-key add -
$ sudo sh -c 'echo "deb http://www.bunkus.org/ubuntu/trusty/ ./" >> /etc/apt/sources.list'
$ sudo apt-get update
$ sudo apt-get install mkvtoolnix mkvtoolnix-gui
Optional, to remove mkvtoolnix and mkvtoolnix-gui, do:
$ sudo apt-get remove mkvtoolnix mkvtoolnix-gui
How to install MKVToolNix 7.6 on Debian 8 Jessie and derivative systems:
$ wget -q -O - https://www.bunkus.org/gpg-pub-moritzbunkus.txt | sudo apt-key add -
$ sudo sh -c 'echo " deb http://www.bunkus.org/debian/jessie/ ./" >> /etc/apt/sources.list'
$ sudo apt-get update
$ sudo apt-get install mkvtoolnix mkvtoolnix-gui
Optional, to remove mkvtoolnix and mkvtoolnix-gui, do:
$ sudo apt-get remove mkvtoolnix mkvtoolnix-gui
How to install MKVToolNix 7.6 on Debian 7 Wheezy and derivative systems:
$ wget -q -O - https://www.bunkus.org/gpg-pub-moritzbunkus.txt | sudo apt-key add -
$ sudo sh -c 'echo " deb http://www.bunkus.org/debian/wheezy/ ./" >> /etc/apt/sources.list'
$ sudo apt-get update
$ sudo apt-get install mkvtoolnix mkvtoolnix-gui
Optional, to remove mkvtoolnix and mkvtoolnix-gui, do:
$ sudo apt-get remove mkvtoolnix mkvtoolnix-gui