MKVToolNix
Create, alter, and inspect Matroska (mkv) files.
Free
Absolutely Free
MKVToolNix overview
MKVtoolnix is a set of tools to create, alter, and inspect Matroska files under OS X, Linux and other Unices, and Windows. They do for Matroska what the OGMtools do for the OGM format and then some.
Since May 1st 2003, the Matroska libraries themselves and my Matroska tools are officially released as a first public beta version. Although all of them are still under heavy development, I urge you to download the software, test it and report any errors you encounter to me. I'm always grateful for good bug reports because I miss so many mistakes and you guys normally find them. Your feedback is important to me :)
Note: While the software is classified as free, it is actually donationware. Please consider making a donation to help support development.
What’s new in version 84.0
Updated on Apr 30 2024
New features and enhancements
- mkvmerge: added a new file-specific option `--regenerate-track-uids`. When used for Matroska files, `mkvmerge` will generate new random track UIDs instead of keeping existing track UIDs. This is done automatically when a Matroska file was created by MakeMKV.
- mkvmerge: MP4 reader: added support for FLAC in MP4. Implements #3692.
- MKVToolNix GUI: multiplexer: the "Attachments" tab's title will now include the total number of attachments (both from source files & to newly attach). Implements #3693.
- translations: added a Norwegian Bokmål translation of the programs by Roger Knutsen (see `AUTHORS`).
Bug fixes
- configure: when called with `--disable-gui` the build system still ran the check for the GUI libraries & failed if they weren't found. This check is now skipped when the option is given. Fixes #3680.
- mkvmerge: several color-related track header properties were parsed into & stored as a wrong integer type internally. This could result in wrong values being copied when very large values were present in source files, or in error messages when very large values were used as command-line parameters.
- MKVToolNix GUI: multiplexer: the keyboard shortcuts from the "modify selected tracks" sub-menu didn't work right after opening a file. They only started working after opening the "multiplexer" menu. Fixes #3681.
Full list of changes available here
Information
App requirements
- Intel 64
- macOS 10.15 or later
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User Ratings
May 25 2021
Version: 57.0.0
Seems many people didn't know. If you mac won't open the file, just hold down 'control' while clicking the app, then choose 'open'. it will then always open.
Mar 5 2021
Version: 54.0.0
MKVToolNix-54.0.0” can’t be opened because Apple cannot check it for malicious software. MACOS is 11.2.1
Feb 15 2021
Version: 53.0.0
Mac OS cannot even open the application, as others have stated. Error stating that Apple cannot check it for malicious content.
Sep 6 2020
Version: 49.0.0
This app won't open on iMac running Catalina 10.15.6 “MKVToolNix-49.0.0” can’t be opened because Apple cannot check it for malicious software." is there an update?
Apr 10 2020
Version: 45.0.0
I need only to split a big file , not good for FAT-32 and this tool did the job easily and quickly.
Apr 4 2020
Version: 44.0.0
I can’t open the program neither on my Mac Sierra or windows 10 , not happy !
Mar 14 2020
Version: 44.0.0
Was it NECESSARY to drop down the support of High Sierra?
On WHAT has 10.4 and 5 more 'power'?
For all what I know, High Sierra is still now the best 'professional OS X'; later ones are 'gimmicky' iOS prone downgrades adding funky 'Gadgets' (Gadget is a name! Of the French company who built the statue of libery in front of the New York harbour!) of no-use by a serious 'power-user', in fact NOT supporting useful utilities like FinderPop, exempli gratia!) GRRRRRR!!!!!
Jan 9 2020
Version: 42.0.0
Multiplexing speed has increased dramatically compared to previous versions. A marked improvement.
Jan 3 2020
Version: 42.0.0
BEWARE! - this new version 42 will not run on Sierra or High Sierra - the system req's got bumped - sigh .....
Dec 9 2019
Version: 41.0.0
MacUpdate - The program name is "MKVToolNix", with capital T and N.
Mar 13 2019
Version: 32.0.0
MU> Requirements for MKVtoolnix: macOS 10.12 "Sierra" and newer
https://mkvtoolnix.download/downloads.html#macosx
The last known version to run on Mavericks is v24.
Jan 4 2019
Version: 30.0.0
Doesn't start on 10.11 here (no crash on startup). The application is about 20 MB smaller than 29.0.0 and that sounds strange.
Oct 23 2018
Version: 28.0.0
Great app for complete control of MKV files. Will you be releasing a "Dark" version for Mojave?
Jul 16 2018
Version: 25.0.0
v25 crashes on launch, here on OS 10.9.5.
Tried also on a fresh Guest user account.
v24 was ok.
Apr 8 2018
Version: 21.0.0
Very good app. I would give all the stars if "Stretch by" would work on audio.
Apr 25 2017
Version: 9.8.0
great tool to remove unnecessary audio tracks and subtitles.
Free
Absolutely Free
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