MKVToolnix is an open source set of command-line and graphical utilities that empower users to extract streams from MKV files, display information about MKV files, merge several MKV streams into one, and split Matroska media files. The resulting files from MKVToolnix can be played back with various media players on Linux/UNIX, or with the Matroska Direct Show filters under Windows operating systems.
Comprises of several command-line and graphical tools
The main tools are mkvmerge, mkvextract, mkvinfo, mmg and mkvpropedit. While the mkvmerge component can be used for joining two or more multimedia streams into a single Matroska file, the mkvextract tool will split MKV files into separate streams.
Supports a wide range of audio and subtitle formats
In addition, the mkvextract program can be used to extract audio, subtitle and video tracks, chapters, tags, CUE sheets, attachments and timecodes from Matroska files. At the moment, it supports the following track types: H.264/AVC, RealVideo, Theora, VP8/VP9, MP2, MP3, AC3, raw PCM, AAC, OGG Vorbis, TrueAudio, ALAC, FLAC, WavPack, Opus, SSA, ASS, Kate, VobSub, and USF.
Edit the properties of MKV files or view detailed information
The mkvinfo program is capable of displaying detailed information about all the elements that are included in a Matroska file. It outputs a list of tracks and provides information about the codecs used in them.
Advanced users can use the mkvpropedit tool to edit the properties of a MKV file without a complete remux. There’s also a GUI front-end for the mkvextract tool, called mmg, designed to used for editing a chapters and headers.
Supported operating systems
MKVToolnix is a platform-independent project that supports Linux (Gentoo, Arch Linux, CentOS, Red Hat Enterprise Linux, Fedora, Debian, Ubuntu, Mandriva, openSUSE, Slackware, Zenwalk), BSD (FreeBSD, NetBSD), Mac OS X and Microsoft Windows operating systems.
The truth is that you won’t find a better application for working with MKV files under a Linux-based operating system. It does for Matroska files what the OGMtools application does for OGM files.