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MKVToolNix is a set of tools to create, alter, split, join and inspect Matroska files(mkv). With these tools one can get information about (mkvinfo) Matroska files, extract tracks/data from (mkvextract) Matroska files and create (mkvmerge) Matroska files from other media files. Matroska is a multimedia file format aiming to become THE new container format for the future. Use MKVCleaver or gMKVExtractGUI to extract/demultiplex mkv video and audio files.

8.8/10
154 votes
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MKVToolNix screenshot 2
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MKVToolNix screenshot 3
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Latest version

42.0.0 (January 2, 2020)



Download


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Download MKVToolNix 42.0.0 Windows  17MB  Win

Download MKVToolNix 42.0.0 Windows 64-bit  17MB  Win64

Download MKVToolNix 42.0.0 Mac  38MB  Mac

Download MKVToolNix 42.0.0 Linux 64-bit  40MB  Linux64




Download Portable and other versions

Download MKVToolNix 42.0.0 Portable Windows  15MB  Win  Portable

Download MKVToolNix 42.0.0 Portable Windows 64-bit  15MB  Win64  Portable




Download old versions


Download MKVToolNix old versions



Software License

Free software / FOSS (Free download and also Free and Open Source Software)



Supported operating systems

WinWindows MacMac OS LinuxLinux



More information and other downloads

Use MKVCleaver or gMKVExtractGUI to extract/demultiplex mkv video and audio files.

Download jMkvpropedit here, a GUI for mkvpropedit. Set default audio, video tracks.

If you prefer the old mmg/mkvmergegui then download MKVtoolnix version 8.3.0 or older.



Version history / Release notes / Changelog


# Version 42.0.0 "Overtime" 2020-01-02

## New features and enhancements

* mkvmerge: added an option for creating byte-identical files: `--deterministic <seed>`. Part of the implementation of #2698.
* mkvmerge: Matroska reader: mkvmerge will remove the `icpf` atom headers if they're present in frames read from Matroska files. Implements #2692.
* mkvmerge: MP4 reader: ALAC tracks: the number of channels, sampling frequency and bit depth are now taken from the bitstream in order to fix bogus values on the container level. Implements #2714.
* mkvpropedit: when changing track UIDs the referring elements in existing chapters & tags will be updated automatically, too. Part of the implementation of #2700.
* mkvinfo: when the option `-p`/`--hex-positions` is used, element positions will be output regardless of the verbosity level. Part of the implementation of #2713.
* mkvinfo: added the option `-P`/`--positions` for showing the position of each element in decimal regardless of the verbosity level used. Part of the implementation of #2713.
* mkvinfo: added the option `-o`/`--continue` for continuing processing when the first cluster is encountered regardless of the verbosity level used. Part of the implementation of #2713.
* mkvinfo: added the option `-a`/`--all` for outputting all sub-elements (even cues & seek head entries) and not stopping at the first cluster regardless of the verbosity level used. Part of the implementation of #2713.
* MKVToolNix GUI: multiplexer: added an option in the preferences for disabling adding cover images from Blu-ray discs. Implements #2693.
* MKVToolNix GUI: multiplexer: added mkvmerge's new `--deterministic` option in the "additional command-line options" dialog. Part of the implementation of #2698.
* MKVToolNix GUI: header editor:: when changing track UIDs the referring elements in existing chapters & tags will be updated automatically, too. Part of the implementation of #2700.

## Bug fixes

* mkvmerge: HEVC ES parser: fixed a bug in the slice parser calculating the size of a field which in turn could have led to the slice's type being read wrong. Patch by Torsten Hauska. Fixes #2710.
* mkvmerge: Matroska reader: fixed a segmentation fault when trying to read a file that uses header removal compression but no removed bytes are present in the track headers. Fixes #2687.
* mkvmerge: MPEG elementary stream parser: fixed an invalid memory access and use of uninitialized memory that could happen under certain circumstances. Fixes #2690.
* mkvmerge: RealMedia reader: fixed a division by zero when all audio timestamps were zero. Fixes #2689.
* mkvmerge: RealMedia reader: fixed an invalid memory access in the video frame assembly code triggered by invalid data in the file. Fixes #2691.

## Build system changes

* `std::optional` (C++17 feature) is now used instead of `boost::optional`.
* `std::regex` is now used instead of `boost::regex`.

## Other changes

* New man page translations into French, Italian, Russian and Chinese Traditional have been added.

View full changelog




Sections/Browse similar tools






Alternative to MKVToolNix


MKVcleaver



MKVExtractGUI and MKVE Wizard



OGMcleaver







Guides and How to's


How to convert MKV to DivX / Demultiplex MKV to video and audio files

- Read

How to convert MKV to MPG (VCD,SVCD or DVD)

- Read

How to cut/split/extract parts from a mkv including all audio and subtitle tracks

- Read

How to rip a Blu-ray disc and remux it to MKV

- Read

Using Handbrake to Burn in Subtitles from MKV to MP4

- Read

MKVToolNix video tutorials



View all guides with guide description here




Acronyms / Also Known As

mkvmerge, mkvmerge gui,mmg, mkvmergegui, mkvextract, mkvpropedit, mkvinfo, mkvtoolnix gui, mkvtoolnixgui



Download MKVToolNix Portable download from the Download links under Download and Download other versions!



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155 reviews, Showing 1 to 5 reviews


Upgraded from 64-bit v29.0.0 but cannot import xml chapters. Creating chapters within the GUI freezes process/app. Went back to v29.0.0 until these issues are resolved.

Review by depamode on Jan 23, 2020 Version: 42.0.0 OS: Windows 10 64-bit Ease of use: 10/10 Functionality: 3/10 Value for money: 10/10 Overall: 9/10




Great software, but in version 42.0.0 one of the functionalities i use practically every day stopped to work - it's not possible to add .xml chapter file anymore (even if it was saved a second ago in the built-in chapter editor) as an input file - please fix this!

Review by MarekZegarek on Jan 6, 2020 Version: 42.0.0 OS: Windows 10 64-bit Ease of use: 10/10 Functionality: 9/10 Value for money: 10/10 Overall: 9/10




No comments. Rating it only.

Review by MarekZegarek on Jan 6, 2020 Version: 42.0.0 OS: Windows 10 64-bit Ease of use: 10/10 Functionality: 9/10 Value for money: 10/10 Overall: 9/10




Wow! I had been looking for a quick and easy way to permanently merge a subtitle file with an mp4 movie file so that my very deaf Mother may better enjoy the video of my late Father's 80th Birthday celebration. I found a video tutorial for MKVToolNix and decided to download the software to try. It was, immediately, so quick and easy to merge and save the completed file. I have only started to create the subtitle file, so only the first one is in place. I think that my rating for this will not change once I have completed the task. I have a lot of exploring to do here but many thanks already!

Review by Mike on Dec 17, 2019 Version: 41.0.0 OS: Windows 10 64-bit Ease of use: 10/10 Functionality: 10/10 Value for money: 10/10 Overall: 10/10




No comments. Rating it only.

Review by oakside on Oct 7, 2019 Version: 38.0.0 OS: Windows 10 64-bit Ease of use: 10/10 Functionality: 10/10 Value for money: 10/10 Overall: 10/10


155 reviews, Showing 1 to 5 reviews

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