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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
159 votes
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Screenshots

MKVToolNix screenshot

MKVToolNix screenshot 2

MKVToolNix screenshot 3
Latest version

51.0.0 (October 4, 2020)



Download


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Download MKVToolNix 51.0.0 Windows 64-bit  18MB  Win64

Download MKVToolNix 51.0.0 Windows  18MB  Win

Download MKVToolNix 51.0.0 Mac  38MB  Mac

Download MKVToolNix 51.0.0 Linux 64-bit  41MB  Linux64




Download Portable and other versions

Download MKVToolNix 51.0.0 Portable Windows 64-bit  16MB  Win64  Portable

Download MKVToolNix 51.0.0 Portable Windows  15MB  Win  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 51.0.0 "I Wish" 2020-10-04

## New features and enhancements

* mkvmerge, mkvpropedit, MKVToolNix GUI: IETF BCP 47 language tags: added missing support for UN M.49 regions for which there are no corresponding ISO 3166 alpha codes. This enables language tags such as `es-419` = Spanish in Latin America and the Caribbean. Implements #2919.
* MKVToolNix GUI: IETF BCP 47 language tags: the text in the widget displaying the current language & the corresponding edit button is now displayed like a link (depending on the theme: different color & underlined), making it clearer that not just the edit button can be clicked but the text, too.

## Bug fixes

* mkvmerge: AV1 parser: fixed mkvmerge crashing after uncaught exceptions due to certain data conditions. Found by fuzzying.
* mkvmerge: AV1 packetizer: the duration of frames wasn't set properly. When appending AV1 IVF or OBU files this meant that the last frame of the Nth file and the first frame of file N+1 had the same timestamp. Fixes #2937.
* mkvmerge: DTS reader: fixed handling of buffers with an odd length when byte-swapped DTS is detected so that mkvmerge doesn't abort with a failed assertion. Found by fuzzying.
* mkvmerge: h.264/AVC and h.265/HEVC elementary stream readers: mkvmerge will no longer claim to recognize data that looks like AVC or HEVC but with invalid video width/height values as that lead to failed assertions in libEBML later. Found by fuzzying.
* mkvmerge: h.265/HEVC parser: fixed mkvmerge aborting after uncaught exceptions due to certain data constellations found by fuzzying.
* mkvmerge: IVF reader: fixed mkvmerge crashing with a "division by zero" error due to certain data conditions. Found by fuzzying.
* mkvmerge: fixed mkvmerge aborting with a "division by zero" error due to the timestamp scaling factor being 0 after handling certain data constellations found by fuzzying.
* mkvmerge: track statistics: fixed a "division by zero" error when the content's shorter than 1ms. Found by fuzzying.
* mkvmerge, mkvinfo, mkvextract, mkvpropedit: Matroska access class: fixed an invalid memory access under certain data conditions. Found by fuzzying.
* MKVToolNix GIU: IETF BCP 47/RFC 5646 language tags: the GUI will no longer open the language dialog when clicking on a disabled language display widget.
* MKVToolNix GUI: IETF BCP 47 language tags: the "variants" combo-boxes were not populated even when the language tag was valid and contained at a variant. Fixes #2923.
* MKVToolNix GUI: IETF BCP 47 language tags: when no language is selected, at least one of the other components (extended subtags, region, or variants) has something selected and "private use" is not empty, the GUI would claim this to be a valid tag, which it isn't. Fixes #2924.
* MKVToolNix GUI: multiplexer: when the tracks/chapters/tags selection changes from "at least one entry selected" to "no entry selected", the input controls will be reset to their default state and not just disabled. Fixes #2927.

## Build system changes

* `configure` now checks for the presence of the a system-wide installed copy of the JPCRE2 C++ wrapper library for the PCRE2 library and uses that if it's new enough (at least v10.32.1). If not, the bundled version will be used as a fallback. Implements #2929.



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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160 reviews, Showing 1 to 5 reviews


For those using older versions- 9.7.0 through 10.0.0 occasionally create corrupt .mkv files (.H264 + .FLAC + .SRT sources in my case). The file will play, but at some point the video will freeze for a few seconds and then continue and the audio will become unsyncronized.

Versions before 9.7.0 do not have the issue. I don't know about versions higher than 10.0.0 as I haven't used those.


Review by videogeek on Nov 23, 2020 Version: 9.6.0 OS: WinXP Ease of use: 10/10 Functionality: 9/10 Value for money: 10/10 Overall: 10/10




No comments. Rating it only.



Review by Hitomi on Jul 29, 2020 Version: 48.0.0 OS: Windows 7 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 Jack Spratt on May 7, 2020 Version: 46.0.0 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 x64 on Mar 8, 2020 Version: 42 OS: Windows 10 64-bit Ease of use: 10/10 Functionality: 9/10 Value for money: 10/10 Overall: 9/10




just downloaded and this helped me on my task to change default audio track on a mkv file very,very easily. So i felt to urge to drop this positive comment. great tool.

Review by Riquich on Mar 8, 2020 Version: 43.0.0 OS: Windows 10 64-bit Ease of use: 10/10 Functionality: 10/10 Value for money: 10/10 Overall: 10/10


160 reviews, Showing 1 to 5 reviews

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