MKVToolNix
MKVToolNix
62.0.0
4.5
0.0
MKVToolNix free download for Mac

MKVToolNix for Mac

11 October 2021

Create, alter, and inspect Matroska (mkv) files.

What is MKVToolNix for Mac

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 MKVToolNix

Version 62.0.0:
New features and enhancements:
  • all: IETF BCP 47/TFC 5646 language tags: all ISO 639 languages are now available, even the ones that aren't of types "Constructed", "Living" or "Special".
  • mkvmerge, mkvpropedit: chapters: both programs will now write elements set to their default value, too (e.g. the legacy language element if it's set to `eng`). This is done to be more consistent with how MKVToolNix GUI writes chapters. Implements #3210.
  • MKVToolNix GUI: multiplexer: when adding new files as attachments the GUI checks if there are other attachments with the same name. If so, the GUI would ask whether to skip the affected files or add them anyway. There's now an option in the preferences to always skip such files, and it's enabled by default. Implements #3213.
  • MKVToolNix GUI: chapter editor: removed the support for explicitly setting the legacy country elements. Instead the legacy country elements are derived from the region parts of the IETF BCP 47 languages. Part of the implementation of #3193.
  • Bug fixes:
  • mkvmerge: fixed a crash when splitting by chapters is enabled but there are no chapters at all. Part of the fix of #3198.
  • mkvmerge: the error message when trying to split by a chapter number that doesn't exist contained the wrong number of chapters that actually do exist. Part of the fix of #3198.
  • mkvmerge: AVC ES parser: fixed mkvmerge aborting due to uncaught exception when encountering bad SPS data. Part of the fix of #3176.
  • mkvmerge: AVC/H.264 parser: re-added the hack `--engage all_i_slices_are_key_frames` which was accidentally removed in release v61.
  • mkvmerge: AVI reader: fixed a crash trying to allocate too big of a memory chunk due to an integer overflows in check conditions. Part of the fix of #3176.
  • mkvmerge: HEVC ES parser: fixed another issue with frame type recognition. Certain frames were marked as B frames/discardable on the container level even though they could be reference pictures. Now only SLNR pictures (sub-layer non-reference) are marked that way. Fixes #3192.
  • mkvmerge: HEVC ES reader: improved file content detection for HEVC ES files with wrong file name extensions (e.g. `.mkv`), which fixes them being mis-detected as something else, e.g. DTS. Fixes #3201.
  • mkvmerge: HEVC ES parser: "end of sequence" NALUs are kept now, and no superfluous flushing will be done when one is found. This prevents splitting NALUs into two different Matroska blocks when they should really be part of a single one, also causing problems with erroneous timestamps. Mostly affects DoVi NALUs. Fixes #3202.
  • mkvmerge: Matroska reader, TrueHD: mkvmerge will now probe much more TrueHD frames trying to find the first sync frame. This fixes track detection in situations when a TrueHD doesn't start with a sync frame, e.g. when the source file's the result of splitting between sync frames.
  • mkvmerge, MKVToolNix GUI's chapter editor: IETF BCP 47/RFC 5646 language tags: when reading chapters from MPLS playlist files, the `ChapLanguageIETF` element will now be set to the configured default chapter language, not just the legacy `ChapterLanguage` element. Part of the fix of #3193.
  • mkvmerge, mkvpropedit, MKVToolNix GUI's chapter editor: IETF BCP 47 elements will now always be created before writing chapters unless IETF BCP 47 elements are disabled. Part of the fix of #3193.
  • mkvmerge, mkvpropedit, MKVToolNix GUI's chapter editor: when a chapter display element contains legacy language & country elements but no IETF BCP 47 elements and IETF BCP 47 elements aren't disabled, the IETF BCP 47 elements created will contain the region from the legacy element. Part of the fix of #3193.
  • mkvmerge, mkvpropedit, MKVToolNix GUI's chapter editor: Legacy country elements are now created when IETF BCP 47 elements are present & contain a region code allowed in legacy country elements. Part of the fix of #3193.
  • Build system changes:
  • The `tools` sub-directory is now always built. The corresponding `configure` option `--with-tools` has been removed. The `install` target still doesn't install them, though.
MKVToolNix for Mac Old Versions
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0.0
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There are no reviews yet
mingzhewang
mingzhewang
May 25 2021
57.0.0
0.0
May 25 2021
0.0
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.
marcelb3
marcelb3
Mar 5 2021
54.0.0
1.0
Mar 5 2021
1.0
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
RandMan
RandMan
Feb 15 2021
53.0.0
1.0
Feb 15 2021
1.0
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.
jallengraham
jallengraham
Sep 6 2020
49.0.0
0.0
Sep 6 2020
0.0
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?
goblin79
goblin79
Apr 10 2020
45.0.0
5.0
Apr 10 2020
5.0
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.
tonybaxe
tonybaxe
Apr 4 2020
44.0.0
0.0
Apr 4 2020
0.0
Version: 44.0.0
What version I should download for Sierra
tonybaxe
tonybaxe
Apr 4 2020
44.0.0
0.0
Apr 4 2020
0.0
Version: 44.0.0
I can’t open the program neither on my Mac Sierra or windows 10 , not happy !
GianMarco.Tavazzani
GianMarco.Tavazzani
Mar 14 2020
44.0.0
0.0
Mar 14 2020
0.0
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!!!!!
coresster
coresster
Jan 12 2020
42.0.0
5.0
Jan 12 2020
5.0
Version: 42.0.0
i only miss the hungarian language :)
Flavum
Flavum
Jan 9 2020
42.0.0
0.0
Jan 9 2020
0.0
Version: 42.0.0
Multiplexing speed has increased dramatically compared to previous versions. A marked improvement.
Free
4.5
0.0
App requirements: 
  • Intel 64
  • macOS 10.15.0 or later
License: 
FreeAbsolutely Free
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