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Description

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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
156 votes
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MKVToolNix screenshot 3
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Latest version

45.0.0 (April 4, 2020)



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Download MKVToolNix 45.0.0 Windows  17MB  Win

Download MKVToolNix 45.0.0 Windows 64-bit  18MB  Win64

Download MKVToolNix 45.0.0 Mac  38MB  Mac

Download MKVToolNix 45.0.0 Linux 64-bit  40MB  Linux64




Download Portable and other versions

Download MKVToolNix 45.0.0 Portable Windows  15MB  Win  Portable

Download MKVToolNix 45.0.0 Portable Windows 64-bit  16MB  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 45.0.0 "Heaven in Pennies" 2020-04-04

## New features and enhancements

* mkvmerge: mkvmerge has never supported appending & splitting FLAC audio tracks. mkvmerge will now emit error messages when the user attempts either instead of continuing and creating invalid FLAC tracks.
* MKVToolNix GUI: added an option in the preferences to turn on eliding text on tab headers. If enabled, tab names will be shortened so that all tab headers fit into the window's width. Implements #2768.
* MKVToolNix GUI: added an option in the preferences to disable all tooltips.
* MKVToolNix GUI: Windows: debug output sent via Qt's to Windows' debugging facility will use a more verbose message format including the application name, making it easier to filter for in SysInternal's "Debug View" utility.
* MKVToolNix GUI: multiplexer: if the file identification fails due to a JSON parser error, the output generated by `mkvmerge` will be output via Qt's debugging facility (viewable with SysInternal's "Debug View" utility on Windows; on other systems it's output on `STDERR`) allowing insight into what's gone wrong.
* MKVToolNix GUI: multiplexer: if an error occurs during file identification, the name of the processed file will be mentioned in the error message.
* MKVToolNix GUI: multiplexer: if an error occurs during identification of multiple files, the GUI will ask the user whether to continue or abort the identification process. Implements #2778.
* MKVToolNix GUI: job queue: added an option in the preferences for removing completed jobs when exiting the program depending on their status. Implements #2769.

## Bug fixes

* mkvmerge: H.265/HEVC packetizer: fixed changing the NALU size length, it was using the wrong offset into the `hevcC` structure.
* mkvmerge: MP4 reader: fixed calculating the duration of video tracks that only contain a single frame. Fixes #2747.
* mkvmerge: MP4 reader: if there's no frame offset table (`ctts` atom) present for H.265/HEVC video tracks, mkvmerge will determine the timestamp order itself instead of relying on the timestamps in the MP4 being in the presentation order required by Matroska. Fixes #2777.
* mkvpropedit: Windows: mkvpropedit wasn't caching when reading the file to modify, slowing down operations such as adding track statistics tags considerably. Fixes #2761.
* MKVToolNix GUI: multiplexer: when using the title as part of the destination file name (both automatically as well as using the "copy title to destination file name" function) all characters that aren't valid in a file name are replaced by hyphens.
* MKVToolNix GUI: multiplexer: the "copy title to destination file name" function was broken when the "make file name unique" option in the preferences was disabled. In that case the file base name was removed regardless of what the title was set to at the time.
* MKVToolNix GUI: multiplexer: when using the "show command line" menu option on Windows the path to the `mkvmerge` executable was shown with forward slashes instead of backslashes. This is a purely cosmetic fix as Windows supports both forward and backward slashes.
* MKVToolNix GUI: multiplexer: when adding Blu-ray playlists the GUI used to only look for the English version of the disc library information (title & cover images). Now the GUI will present all disc library entries in the "select playlist to add" dialog & let the user chose which one to use (if any). Fixes #2765.
* MKVToolNix GUI: multiplexer, info tool: fixed the "warn before overwriting" check wrt. jobs creating the same file. Fixes #2758.

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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157 reviews, Showing 1 to 5 reviews


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




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


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