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

MKVToolNix (64-bit)
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MKVToolNix 27.0.0 (64-bit)

  -  15.3 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 27.0.0 (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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Download MKVToolNix 27.0.0 (64-bit)
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  • MKVToolNix 27.0.0 (64-bit) Screenshots

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    MKVToolNix 27.0.0 (64-bit) Screenshot 1
  • MKVToolNix 27.0.0 (64-bit) Screenshot 2
  • MKVToolNix 27.0.0 (64-bit) Screenshot 3

What's new in this version:

New features and enhancements:
- mkvmerge: chapters: the timestamps of chapters read from containers or from chapter files can be adjusted (multiplication and addition) with the new --chapter-sync option or using the special track ID -2 for the existing --sync option
- MKVToolNix GUI: multiplexer: adjusted & added controls for mkvmerge’s new feature of being able to adjust chapter timestamps
- MKVToolNix GUI: multiplexer: the GUI can now ask for confirmation when the user is about to create a file that won’t contain audio tracks. It does this by default if at least one source file contains an audio track

Bug fixes:
- mkvmerge: AC-3: dialog normalization gain removal was corrupting E-AC-3 frames irreversibly by writing checksums in places where they didn’t belong. Additionally only the first E-AC-3 frame in a Matroska was processed but not additional dependent frames in the same block
- MKVToolNix GUI: fixed a leak of Windows font resources leading to a general slowdown and subsequent crash

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