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 8.3.0, which has been recently released, bringing a huge list of changes.
Installation instructions:
In order to successfully install the latest MKVToolNix versions on Fedora 22 and Fedora 21, you need to add the rpmfusion repository, update the local repository index and install the mkvtoolnix and mkvtoolnix-gui packages.
How to install MKVToolNix on Fedora 22:
$ su -c 'dnf install --nogpgcheck http://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-$(rpm -E %fedora).noarch.rpm http://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-$(rpm -E %fedora).noarch.rpm'
$ sudo dnf update
$ sudo dnf install mkvtoonix mkvtoolnix-gui
Optional, to remove mkvtoolnix, do:
$ sudo dnf remove mkvtoonix mkvtoolnix-gui
How to install MKVToolNix on Fedora 21:
$ su -c 'yum install --nogpgcheck http://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-$(rpm -E %fedora).noarch.rpm http://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-$(rpm -E %fedora).noarch.rpm'
$ sudo yum update
$ sudo yum install mkvtoonix mkvtoolnix-gui
Optional, to remove mkvtoolnix, do:
$ sudo yum remove mkvtoonix mkvtoolnix-gui