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

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

  -  28.89 MB  -  Open Source
Free Download

Security Status

  • Latest Version

    MKVToolNix 91.0.0 (64-bit) LATEST

  • Review by

    Sophia Jones

  • Operating System

    Windows 7 64 / Windows 8 64 / Windows 10 64 / Windows 11

  • User Rating

    Click to vote

  • Author / Product

    Moritz Bunkus / External Link

  • Filename

    mkvtoolnix-64-bit-91.0-setup.exe

  • MD5 Checksum

    e422d2cc72e19dbced07e19102ae07d1

MKVToolNix 64bit is a free, open-source toolset for creating, editing, splitting, merging, and inspecting Matroska (MKV) files.

Tailored primarily for advanced users and video enthusiasts, MKVToolNix provides a powerful command-line interface along with a user-friendly GUI, making it a go-to solution for working with MKV containers.

The 64-bit version is optimized for modern Windows systems, offering improved performance and compatibility for high-resolution files.

Features

MKV Muxing and Demuxing: Combine video, audio, subtitle, and metadata tracks into a single MKV file or extract individual components.

Track Editing: Modify track names, language settings, default/forced track flags, and compression methods.

Batch Processing: Queue and process multiple jobs in one go using the job queue feature.

Command-Line Integration: Full CLI support for automation and scripting.

Metadata Management: Add or edit chapter information and attachments like fonts or cover images.

Subtitle Support: Compatible with multiple subtitle formats, including SRT, ASS, and PGS.

Preview and Analysis Tools: Examine file properties before and after processing.

User Interface

MKVToolNix GUI provides a well-organized, tab-based layout. The interface is split into multiple sections: "Input", "Output", "Attachments", "Chapters", and "Job Queue".

Each section is intuitively laid out, allowing users to drag and drop files, adjust track parameters, and queue up jobs with minimal clicks. Despite its powerful backend, the GUI remains responsive and easy to navigate.

Installation and Setup

Installing MKVToolNix on Windows is straightforward. The 64-bit installer is available on the official website. Once downloaded, setup takes only a few minutes. No bloatware or third-party software is included.

After installation, the application is ready to use without additional configuration, though users can tweak settings for personal preferences.

How to Use
  • Drag and drop the MKV or media files into the Input tab.
  • Select or deselect video, audio, or subtitle tracks as needed.
  • Modify track metadata, language, and flags.
  • Set output file destination.
  • Click “Start Multiplexing” to begin the muxing process.
  • For repetitive tasks, users can save job settings or use the CLI for scripting.
FAQs

Can MKVToolNix convert videos to MKV?
Yes, it can wrap video/audio files (like MP4, AVI, or MP3) into MKV format, but it does not re-encode the streams.

Does it support subtitles?
Yes, it supports multiple subtitle formats and allows embedding, removal, or editing of subtitle tracks.

Is it safe to use?
Absolutely. MKVToolNix is open-source and regularly updated. It contains no ads or spyware.

Can I extract audio or video from MKV files?
Yes, you can demux (extract) any track using the GUI or command-line tools.

Is there a portable version?
Yes, a portable version is available for users who prefer not to install the software.

Alternatives

HandBrake – Better for video conversion and compression.

FFmpeg – Command-line powerhouse with broader format support.

Avidemux – Lightweight editor for basic cutting and encoding.

System Requirements
  • OS: Windows 7/8/10/11 (64-bit)
  • RAM: 2GB minimum (4GB+ recommended)
  • CPU: Dual-core processor or higher
  • Disk Space: ~100MB for installation
PROS
  • Completely free and open-source
  • Powerful muxing/demuxing capabilities
  • Regular updates and active development
  • User-friendly GUI with advanced features
  • Batch processing and CLI support
CONS
  • Limited video editing features
  • No built-in media player for preview
Conclusion

MKVToolNix (64-bit) is a robust, essential tool for users working with Matroska files. Its combination of a powerful engine, versatile features, and clean interface make it a favorite among video editors, archivists, and power users.

Also Available: MKVToolNix (32-bit)

Download MKVToolNix (64-bit) Latest Version

  • MKVToolNix 91.0.0 (64-bit) Screenshots

    The images below have been resized. Click on them to view the screenshots in full size.

    MKVToolNix 91.0.0 (64-bit) Screenshot 1
  • MKVToolNix 91.0.0 (64-bit) Screenshot 2
  • MKVToolNix 91.0.0 (64-bit) Screenshot 3

What's new in this version:

Important notes:
- The MKVToolNix project's source code repository
- The customized MXE repository used for building the Windows variants has been moved from Gitlab to [Codeberg]

New features and enhancements:
- MKVToolNix GUI: multiplexer: added actions in the "Multiplexer" menu for saving all currently open multiplexer tabs to a single `.mtxcfg`file. Loading this file later will restore all tabs
- MKVToolNix GUI: multiplexer: when adding files the GUI can automatically enable the "commentary" flag for audio and subtitle tracks if the file name contains the word "comments" or "commentary" delimited by certain characters (configurable). This feature is turned on by default
- MKVToolNix GUI: multiplexer: when adding files the GUI can automatically enable the "original language" flag for audio and subtitle tracks if the track's language matches one configured by the user (configurable). This feature is turned off by default
- MKVToolNix GUI: multiplexer: when adding files the GUI can automatically set several track flags based on the file name. It can now look for the same patters in the track names, too (configurable). This feature is turned on by default
- MKVToolNix GUI: multiplexer: added special drag & drop zones where users can drop files to circumvent the preferences wrt. what to do with multiple dropped files. Each drop zone corresponds to one of the three possible choices (add all to current settings; create one new settings & add all there; add new settings for each file & add one file to each). This feature is turned off by default
- MKVToolNix GUI: multiplexer: added additional special drag & drop zones where users can drop files to add them as attachments. One of the zones will automatically set up the dropped file to function as a cover image
- MKVToolNix GUI: multiplexer: when making destination file names unique by suffixing them with a running number the GUI will now also consider the destination file names of multiplex jobs currently in the queue that are currently running or still waiting for execution

Fixed:
- mkvmerge: timestamps format v3: fixed the parser; it was completely broken for the lines containing the duration & an optional number of frames per second.
- mkvmerge: DTS parser: if the X96 extension is present in a DTS-HD High Resolution stream, the sampling frequency will be set to 96kHz. This was broken when reading DTS from elementary streams & from Matroska files.
- mkvpropedit, MKVToolNix GUI's chapter & header editors: fixed a bug leading to a segmentation fault when trying to replace an element at the end of the file that's followed by only void elements (at least one)

Build system changes:
- The bundled `nlohmann-json` library was updated to v3.11.3

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