MKVToolNix
MKVToolNix
51.0.0

4.6

MKVToolNix free download for Mac

MKVToolNix

08 October 2020

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

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 MKVToolNix

Version 51.0.0:
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.

Full list of changes available here

MKVToolNix for Mac Old Versions

Join over 500,000 subscribers.

Subscribe for our newsletter with best Mac offers from MacUpdate.

How would you rate MKVToolNix app?

89 Reviews of MKVToolNix

See all
5
goblin79
10 April 2020
Version: 45.0.0

Most helpful

I need only to split a big file , not good for FAT-32 and this tool did the job easily and quickly.
(1)
jallengraham
06 September 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?
(0)
5
goblin79
10 April 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.
(1)
tonybaxe
04 April 2020
Version: 44.0.0
What version I should download for Sierra
(0)
tonybaxe
04 April 2020
Version: 44.0.0
I can’t open the program neither on my Mac Sierra or windows 10 , not happy !
(0)
GianMarco.Tavazzani
14 March 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!!!!!
(0)
5
coresster
12 January 2020
Version: 42.0.0
i only miss the hungarian language :)
(0)
Show comment (1)
Flavum
09 January 2020
Version: 42.0.0
Multiplexing speed has increased dramatically compared to previous versions. A marked improvement.
(1)
Show comment (1)
Scion777
03 January 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 .....
(1)
Show comment (1)
Flavum
09 December 2019
Version: 41.0.0
MacUpdate - The program name is "MKVToolNix", with capital T and N.
(1)
Show comment (1)
Aargl
13 March 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.
(2)
Free

4.6

App requirements: 
  • Intel 64
  • macOS 10.14.0 or later
License: 
FreeAbsolutely Free

Downloaded & Installed 400,430 times

Similar apps
HandBrake
HandBrake
Versatile video encoder; convert any source to MPEG-4 and more.
Is this app is similar to HandBrake? Vote to improve the quality of this list.
Vote results
8
Upvotes
7
Total score
-1
Downvotes
ffWorks
ffWorks
Convert multimedia files between formats (was iFFmpeg).
Is this app is similar to ffWorks? Vote to improve the quality of this list.
Vote results
10
Upvotes
2
Total score
-8
Downvotes
Jaksta Video Converter
Jaksta Video Converter
Convert video files.
Is this app is similar to Jaksta Video Converter? Vote to improve the quality of this list.
Vote results
0
Upvotes
1
Total score
0
Downvotes
MKVtools
MKVtools
Create and edit MKV files.
Is this app is similar to MKVtools? Vote to improve the quality of this list.
Vote results
1
Upvotes
1
Total score
0
Downvotes
Hybrid
Hybrid
Front-end for a variety of video container tools.
Is this app is similar to Hybrid? Vote to improve the quality of this list.
Vote results
0
Upvotes
0
Total score
0
Downvotes