MKVToolNix is the one of the best collection of tools (mkvmerge, mkvinfo, mkvextract, mkvpropedit and mmg) for modifying MKV files.

The graphical user interface (GUI) of the program allows you to manipulate Matroska (MKV) files in several ways.

You can use those tools to create, split, edit, mux, demux, merge, extract or inspect Matroska files.

MKVToolnix will also work with other video formats. Such as AVI, MPEG, MP4, MPEG, Ogg/OGM, RealVideo, MPEG1/2, H264/AVC, Dirac, VC1.

And more as well as some video codecs such as VP9 video codec support – reading from IVF, Matroska, WebM files, extract to IVF files.

Moreover the program can work with audio files such as AAC, FLAC, MP2, MP3, AC3, DTS/DTS-HD, Vorbis, RealAudio. And also work with most subtitle formats including SRT, PGS/ SUP, VobSub, ASS, and SSA.

It is a cross-platform application that will work on Microsoft Windows (both 32 and 64-bit versions), Apple macOS and Linux operating systems.

Here is also the portable version which does not require installation. You just need to start the function. It can also be stored on external devices and run on any computer you have access to.

# Version 93.0 “Goblu” 2025-06-14

## New features and enhancements

* all: updated the various lists that go into IETF/BCP 47 language tags: ISO
639 languages; ISO 3166 countries; ISO 15924 regions; IANA subtag
registries.
* translations: added a Hungarian translation of the programs & man pages by
Viktor György, John Fowler & Attila Zsigus (see `AUTHORS`).
* mkvextract: tags extraction: added an option `–no-track-tags` (short: `-T`)
for not extracting tags associated with tracks.
* MKVToolNix GUI: multiplexer: the default regular expression for deriving the
“forced display” track flag from file names for subtitles was extended to
also match on the term `signs`. Implements #6094.
* MKVToolNix GUI: preferences: the revert buttons for the various “default
regex for…” will only be enabled when the current text differs from the
default, in other words: when reverting would actually change the
text. Part of the implementation of #6099.
* MKVToolNix GUI: preferences: the GUI will now auto-upgrade the “default
regex for…” to their respective current default values if they’re still set
to one of the previous default values. Part of the implementation of #6099.

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