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Tool
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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.
Free software
OS:Windows Mac Linux
Version:15.0.0
Released:Aug 19,2017
File size:15.8MB
OS:Windows Mac Linux
Version:15.0.0
Released:Aug 19,2017
File size:15.8MB
Latest version
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Download portable, Mac, Linux and other versions
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Supported operating systems
Windows 
Mac OS 
Linux License
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.
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 15.0.0 "Duel with the Devil" 2017-08-19
## Important notes
* mkvmerge, mkvpropedit, GUI's header and chapter editors: the programs will no longer add most missing Matroska elements that are mandatory but have a default value in the Matroska specification (e.g. the `TagLanguage` element with a value of `und` if it isn't present in its `SimpleTag` parent). Due to this change libEBML v1.3.5 is now required.
## New features and enhancements
* MKVToolNix GUI: multiplex tool: added a new entry to the "source files" context menu labeled "Set destination file name from selected file's name". It will force the GUI to consider the selected file to be the reference for automatically setting the file name, no matter which file was originally added as the first file. It will also force setting the destination file name once if automatic destination file name generation is turned off in the preferences. Implements part of #2058.
* MKVToolNix GUI: multiplex tool: added an option in the preferences on "Multiplexer" ? "Output" labeled "Only use the first source file that contains a video track". If enabled, only source files containing video tracks will be used for setting the destination file name. Other files that are added are ignore. Implements the rest of #2058.
* MKVToolNix GUI: header editor: added support for editing the video colour attributes. Implements the second half of #2038.
* MKVToolNix GUI: header editor: added support for the "video projection" track header attributes. Part of the implementation of #2064.
* MKVToolNix GUI: job queue: selected jobs can now be move up and down by pressing the `Ctrl+Up` and `Ctrl+Down` keys. Additionally, push buttons to move them up & down are shown if the corresponding option is enabled in the preferences. Implements #2060.
* mkvmerge: added support for the "video projection" track header attributes. Part of the implementation of #2064.
* mkvinfo: added support for the "video projection" track header attributes. Part of the implementation of #2064.
* mkvpropedit: added support for editing the video colour attributes. Implements one half of #2038.
* mkvpropedit: added support for the "video projection" track header attributes. Part of the implementation of #2064.
## Bug fixes
* all: selecting the program's language (e.g. via the `--ui-language` command-line option or via the GUI's preferences) did not work on Linux & Unix if the `LANGUAGE` environment variable was set and didn't include the desired language. Fixes #2070.
* MKVToolNix GUI: removed the keyboard shortcuts for switching between the different tools (e.g. `Ctrl+Alt+1` for the multiplexer). They overlapped with basic functionality on keyboards that use an `AltGr` key, e.g. German ones, where `AltGr+7` emits `{`. As `AltGr+key` is implemented as `Ctrl+Alt+key` under the hood, this means that `AltGr+7` is really `Ctrl+Alt+7` which the GUI now took to mean "switch to the job queue" instead of "insert `{`". Fixes #2056.
* MKVToolNix GUI: header editor: after saving the file the GUI wasn't updating its internal file modification timestamp. That lead to the GUI wrongfully claiming that the file had been modified externally when the user wanted to save the file once more, requiring a reload of the file losing all modifications made since saving the first time.
* mkvmerge: DTS handling: some source files provide timestamps for audio tracks only once every `n` audio frames. In such situations mkvmerge was buffering too much data resulting in a single gap in the timestamps of one frame duration after frame number `n - 1` (the second audio timestamp read from the source file was used one output frame too early). Fixes #2071.
* mkvinfo: fixed a null pointer dereference if an `EbmlBinary` element's data pointer is a null pointer. Fixes #2072.
## Build system changes
* configure: added option `--disable-update-check`. If given, the code checking online for available updates will be disabled. The update check is enabled and included in the GUI by default.
* libEBML v1.3.5 is now required.
## Other changes
* mkvmerge: the option `--colour-matrix` has been renamed to `--colour-matrix-coefficients` in order to match the specification more closely. The old option name will continue to be recognized as well.
## Important notes
* mkvmerge, mkvpropedit, GUI's header and chapter editors: the programs will no longer add most missing Matroska elements that are mandatory but have a default value in the Matroska specification (e.g. the `TagLanguage` element with a value of `und` if it isn't present in its `SimpleTag` parent). Due to this change libEBML v1.3.5 is now required.
## New features and enhancements
* MKVToolNix GUI: multiplex tool: added a new entry to the "source files" context menu labeled "Set destination file name from selected file's name". It will force the GUI to consider the selected file to be the reference for automatically setting the file name, no matter which file was originally added as the first file. It will also force setting the destination file name once if automatic destination file name generation is turned off in the preferences. Implements part of #2058.
* MKVToolNix GUI: multiplex tool: added an option in the preferences on "Multiplexer" ? "Output" labeled "Only use the first source file that contains a video track". If enabled, only source files containing video tracks will be used for setting the destination file name. Other files that are added are ignore. Implements the rest of #2058.
* MKVToolNix GUI: header editor: added support for editing the video colour attributes. Implements the second half of #2038.
* MKVToolNix GUI: header editor: added support for the "video projection" track header attributes. Part of the implementation of #2064.
* MKVToolNix GUI: job queue: selected jobs can now be move up and down by pressing the `Ctrl+Up` and `Ctrl+Down` keys. Additionally, push buttons to move them up & down are shown if the corresponding option is enabled in the preferences. Implements #2060.
* mkvmerge: added support for the "video projection" track header attributes. Part of the implementation of #2064.
* mkvinfo: added support for the "video projection" track header attributes. Part of the implementation of #2064.
* mkvpropedit: added support for editing the video colour attributes. Implements one half of #2038.
* mkvpropedit: added support for the "video projection" track header attributes. Part of the implementation of #2064.
## Bug fixes
* all: selecting the program's language (e.g. via the `--ui-language` command-line option or via the GUI's preferences) did not work on Linux & Unix if the `LANGUAGE` environment variable was set and didn't include the desired language. Fixes #2070.
* MKVToolNix GUI: removed the keyboard shortcuts for switching between the different tools (e.g. `Ctrl+Alt+1` for the multiplexer). They overlapped with basic functionality on keyboards that use an `AltGr` key, e.g. German ones, where `AltGr+7` emits `{`. As `AltGr+key` is implemented as `Ctrl+Alt+key` under the hood, this means that `AltGr+7` is really `Ctrl+Alt+7` which the GUI now took to mean "switch to the job queue" instead of "insert `{`". Fixes #2056.
* MKVToolNix GUI: header editor: after saving the file the GUI wasn't updating its internal file modification timestamp. That lead to the GUI wrongfully claiming that the file had been modified externally when the user wanted to save the file once more, requiring a reload of the file losing all modifications made since saving the first time.
* mkvmerge: DTS handling: some source files provide timestamps for audio tracks only once every `n` audio frames. In such situations mkvmerge was buffering too much data resulting in a single gap in the timestamps of one frame duration after frame number `n - 1` (the second audio timestamp read from the source file was used one output frame too early). Fixes #2071.
* mkvinfo: fixed a null pointer dereference if an `EbmlBinary` element's data pointer is a null pointer. Fixes #2072.
## Build system changes
* configure: added option `--disable-update-check`. If given, the code checking online for available updates will be disabled. The update check is enabled and included in the GUI by default.
* libEBML v1.3.5 is now required.
## Other changes
* mkvmerge: the option `--colour-matrix` has been renamed to `--colour-matrix-coefficients` in order to match the specification more closely. The old option name will continue to be recognized as well.
View full changelog
Sections/Browse similar tools
Alternative to MKVToolNix
MKVcleaver
MKVExtractGUI and MKVE Wizard
OGMcleaver
Guides and How to's
How to add subtitles to .mkv files using mkvmerge GUI
- ReadHow to convert MKV to DivX / Demultiplex MKV to video and audio files
- ReadHow to convert MKV to MPG (VCD,SVCD or DVD)
- ReadHow to convert MKV video files to AVI
- ReadHow to cut/split/extract parts from a mkv including all audio and subtitle tracks
- ReadHow to rip a Blu-ray disc and remux it to MKV
- ReadUsing Handbrake to Burn in Subtitles from MKV to MP4
- ReadYouTube MKVToolNix video tutorials
View all guides with guide description here
Acronyms / Also Known As
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| 117 reviews, Showing 1 to 5 reviews |
Something is wrong with the new Mac ver 15.0.0. It starts up and bounces up and down in the dock and never opens up. No errors, nothing.
Aug 19, 2017 Version: Ver 14.0.0
OS: MacOSX Ease of use: 8/10
Functionality: 7/10
Value for money: 8/10
Overall: 7/10
I can't fault this excellent software or its generous, continuous development. I also use it in XP, but you must use version 10 which if memory serves is the last version to work in XP. Added benefits of mkv toolnix are if you have an audio synch issue in a mp4/h264 file and cannot work out the delay, then just put it through mkvtoolnix and it automatically finds the delay e.g -11ms,-83ms(check in media info later) etc.
I always like to extract the audio with Yamb(portable version only)first to find the volume level/clipping using mp3gain with aacgain exe renamed to mp3.exe and placed in the folder of mp3 gain. I then normalize the extracted aac fileif necessary. Then I remux and place in mkv container, if the audio was skewed or if I want to add an srt for foreign parts etc.
Aug 19, 2017 Version: 15
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.
Aug 1, 2017 Version: v14.0.0
OS: Windows 7 64-bit Ease of use: 10/10
Functionality: 9/10
Value for money: 7/10
Overall: 10/10
No comments. Rating it only.
Jul 25, 2017 Version: 14.0.0
OS: Windows 10 64-bit Ease of use: 10/10
Functionality: 10/10
Value for money: 10/10
Overall: 10/10
Sem sombra de dúvidas o melhor editor e criador de contêiner "MKV" até o momento. Apesar de ter uma interface simples para os que já estão acostumados a editar esse formato de contêiner, o MKVToolNix realiza quase todas as funções necessárias para a edição e criação do mesmo.
Recomendo a utilização do seguinte conjunto de software para maior liberdade de edição e criação
https://www.videohelp.com/software/chapterEditor
https://www.videohelp.com/software/Aegisub
https://www.videohelp.com/software/Audacity
https://www.videohelp.com/software/Format-Factory
https://www.videohelp.com/software/HandBrake
Jul 22, 2017 Version: 13.0.0
OS: Windows 10 64-bit Ease of use: 10/10
Functionality: 10/10
Value for money: 10/10
Overall: 10/10
| 117 reviews, Showing 1 to 5 reviews |
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NEW SOFTWARE= New tool since your last visit
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Type and download
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NO LONGER DEVELOPED = The software hasn't been updated in over 5 years.
RECENTLY UPDATED = The software has been updated the last 31 days.
Freeware = Free software.
Free software = Free software and also open source code.
Freeware/Ads = Free software but supported by advertising, usually with a included browser toolbar. It may be disabled when installing or after installation.
Free software/Ads = Free software and open source code but supported by advertising, usually with a included browser toolbar. It may be disabled when installing or after installation.
Trialware = Also called shareware or demo. Trial version available for download and testing with usually a time limit or limited functions.
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Portable version = A portable/standalone version is available. No installation is required.
v1.0.1 = Latest version available.
Download beta = It could be a Beta, RC(Release Candidate) or an Alpha / Nightly / Unstable version of the software.
Download [15MB] = A direct link to the software download.
[Win] = Windows download version. It works on 32-bit and 64-bit Windows.
[Win64] = Windows 64-bit download version. It works only on 64-bit Windows.
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