Create, modify and inspect Matroska (MKV) files for Windows PC

MKVToolNix (64-bit)

MKVToolNix 29.0.0 (64-bit)

  -  15.71 MB  -  Open Source

Sometimes latest versions of the software can cause issues when installed on older devices or devices running an older version of the operating system.

Software makers usually fix these issues but it can take them some time. What you can do in the meantime is to download and install an older version of MKVToolNix 29.0.0 (64-bit).


For those interested in downloading the most recent release of MKVToolNix (64-bit) or reading our review, simply click here.


All old versions distributed on our website are completely virus-free and available for download at no cost.


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  • MKVToolNix 29.0.0 (64-bit) Screenshots

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    MKVToolNix 29.0.0 (64-bit) Screenshot 1
  • MKVToolNix 29.0.0 (64-bit) Screenshot 2
  • MKVToolNix 29.0.0 (64-bit) Screenshot 3

What's new in this version:

Important notes:
- The string formatting library used was switched from `boost::format` to [`fmt`]. See the section "Build system changes" for details

New features and enhancements:
- MKVToolNix GUI: added an option in the preferences for disabling automatic scaling for high DPI displays
- MKVToolNix GUI: the GUI will now prevent the system from going to sleep while the job queue is running. This feature is implemented for macOS, Windows and Linux/Unix systems where the `org.freedesktop.login1.Manager` D-Bus interface is available

Bug fixes:
- Mkvmerge: chapter generation: the start timestamps of chapters generated in intervals was wrong for files whose smallest video timestamp was bigger than 0
- Mkvmerge: MP4 reader: fixed handling of atoms whose size exceeds the parent atom's size
- Mkvmerge, MKVToolNix GUI's chapter editor: the chapter name template will now also be used when reading Ogg-style chapter files with empty chapter names
- Mkvextract: AAC: mkvextract will now write the program config element (PCE) before the first AAC raw data packet if the PCE is present in the `AudioSpecificConfig` structure in the `Codec Private` Matroska element. The PCE carries vital information about the number of channels and is required in certain cases
- Mkvpropedit, MKVToolNix GUI's header editor: in situations when a one-byte space must be covered by a new EBML void element the following element must be moved up instead. If that moved element is a cluster, the corresponding cue entries will now be updated to reflect the cluster's new position
- MKVToolNix GUI: Windows: the application manifest is now included properly so that Windows actually recognizes it

Build system changes:
- Qt's D-Bus implementation is now required for building on systems other than macOS and Windows, The `boost::format` library is not used anymore
- The [`fmt` library]is now required. Versions 3 and newer are supported. As not all Linux distributions include packages for the library, its release 5.2.1 comes bundled with MKVToolNix. The `configure` script will check for a system version of the library and use it if present and recent enough. Otherwise it will fall back to the bundled version and link that statically