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

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

  -  32.25 MB  -  Open Source
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  • Latest Version

    MKVToolNix 99.0.0 (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-99.0-setup.exe

  • MD5 Checksum

    54fdd015f3cb1b8c7be1ff47548b8089

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
Why is this app published on FileHorse? (More info)

  • MKVToolNix 99.0.0 (64-bit) Screenshots

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

    MKVToolNix 99.0.0 (64-bit) Screenshot 1
  • MKVToolNix 99.0.0 (64-bit) Screenshot 2
  • MKVToolNix 99.0.0 (64-bit) Screenshot 3

What's new in this version:

New features and enhancements:
- MKVToolNix GUI: the GUI will now remember the last used directory for selecting audio files for playback in “play audio file” program runners separately from any other “open file”-type situations. This directory will also default to /System/Library/Sounds on macOS now.

MKVToolNix GUI: executing actions → running programs: added new variables: MTX_DESTINATION_FILE_BASE_NAME (the name without the drive letter, path or the suffix; e.b. /movies/A.new.hope.mkv → A.new.hope) and MTX_DESTINATION_FILE_SUFFIX (only the letters after the last ., e.g. /movies/A.new.hope.mkv → mkv). Added examples to all the destination file variables in the popup menu when adding variables in the preferences
- MKVToolNix GUI: executing actions → running programs: the command-line input widget will now receive focus again after using the popup menu for adding a variable
- MKVToolNix GUI: executing actions → running programs: the variables will now also be set as environment variables when running a program after a job completes.
- MKVToolNix GUI: executing actions → running programs: when using the “Execute now” button for testing the MTX_… variables will be set to the current multiplexer tab’s values for easier testing

Fixed:
- mkvmerge: if using legacy font MIME types is off mkvmerge will now remap legacy font MIME types present in source files into the current ones
- mkvmerge, mkvpropedit, MKVToolNix GUI’s multiplexer & header editor: on Windows & macOS the MIME type detection will now use the FreeDesktop.org MIME database instead of falling back to file extension-based guesses. This matches how it works on other operating systems. This fixes e.g. OpenType fonts being detected as the legacy type application/vnd.ms-opentype instead of the current IETF RFC, font/otf, no matter what the “use legacy font MIME types” settings in the preferences was set to.
- MKVToolNix GUI: update checker: fixed a potential attempt to read from an invalid memory address if an error occurred when parsing the XML file retrieved from the official MKVToolNix server
- macOS: GUI: the default audio file for program runners of type “play audio file” has been changed to an AIFF file as Qt’s Multimedia backend routes through Core Audio which doesn’t support WebM/VP8/Vorbis/Opus. Existing configurations will be updated if they point to the prior default WebM audio file.

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