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

MKVToolNix (64-bit)

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MKVToolNix 44.0.0 (64-bit)

  -  17.59 MB  -  Open Source
Free Download

Security Status

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 44.0.0 (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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If you have any questions or ideas that you want to share with us - head over to our Contact page and let us know. We value your feedback!

Download MKVToolNix 44.0.0 (64-bit)

  • MKVToolNix 44.0.0 (64-bit) Screenshots

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    MKVToolNix 44.0.0 (64-bit) Screenshot 1
  • MKVToolNix 44.0.0 (64-bit) Screenshot 2
  • MKVToolNix 44.0.0 (64-bit) Screenshot 3

What's new in this version:

New features and enhancements:
- MKVToolNix GUI: header editor: the attachments can now be reordered via drag & drop

Bug fixes:
- Mkvmerge: Matroska reader: when encountering certain errors in the track headers such as the codec ID not being present mkvmerge will simply skip those tracks instead of exiting with an error
- MKVToolNix GUI: multiplexer: the "ask before overwriting" functionality did not look for the correct file names when splitting was active

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