Mkvtoolnix Download

Updated: June 4, 2026 · Full review · Alternatives · Converters

MKVToolNix 91.0.0 is a free, open-source tool for creating, editing, and extracting MKV and WebM video containers across Windows and Linux platforms. The application handles merging video files, extracting audio tracks, adding subtitles, editing chapters, and remuxing containers without quality loss — all without paying a cent or dealing with ads.

To acquire mkvtoolnix download files, visit the official MKVToolNix project repository. The software is available as an installer for Windows (both 32-bit and 64-bit versions) and as packages for Linux distributions including Ubuntu. Windows users get both a traditional installer and a portable version, which runs without installation and requires no system modifications. The command-line utilities ship with both variants, so you can script batch operations if needed.

Installation on Windows and Linux

Getting the Windows Version

Download the installer or portable archive from the official source. The Windows installer includes the graphical interface alongside command-line tools. Once extracted or installed, the application immediately supports MKV merge operations, subtitle embedding, and audio track manipulation. No dependencies or codec packs are required — the software handles all Matroska container operations internally.

The portable version runs from any folder and leaves no registry entries, making it ideal for USB-based workflows or systems where you lack admin rights.

Linux Installation

On Ubuntu and Debian-based systems, package managers often include pre-built binaries. Use `apt install mkvtoolnix` to fetch the latest available version from your distribution's repositories. Fedora, Arch, and other distributions maintain their own packages. This approach provides automatic updates through your system's package manager.

For the absolute latest features, build from source using the project's GitHub repository — though this requires development tools like GCC and Boost libraries.

Core Features and Capabilities

This MKV editor free tool excels at container manipulation without re-encoding. Merge multiple video files by specifying track order, extract individual audio or subtitle streams without touching video data, and add SRT or ASS subtitles directly into the container. Chapter editing allows precise segment marking, while metadata fields accept titles, language tags, and custom properties.

The MKV merge tool accepts H.264, H.265 (HEVC), and other video codecs within MKV or WebM containers. Audio track selection lets you keep or discard specific language versions, and the interface clearly shows bitrate, frame rate, and codec information before processing.

Pro Tip: Use the `--track-order` flag in command-line mode to rearrange tracks without re-encoding. For example, `mkvmerge --track-order 0:0,1:1 input.mkv` swaps audio and video track order — useful when source files have tracks in unexpected positions.

Safety and Open-Source Transparency

MKVToolNix download distributions are entirely safe. The project has been maintained for over two decades with transparent, auditable source code. No telemetry, no hidden processes, no crypto miners. Windows Defender, Avast, and other security suites recognize the legitimate binary signatures. The open-source model means thousands of developers have reviewed the code — security issues would surface immediately.

Compare this directly to File Converter as a general-purpose alternative for broader file type support, though that tool lacks specialized MKV subtitle editor capabilities and container-level control.

Common Tasks: Merging and Subtitle Addition

Adding subtitles involves selecting your MKV file, clicking the "Add files" button, then adding your SRT or ASS subtitle file to the same job. The application automatically assigns the subtitle track to the output MKV. Learn the graphical interface for subtitle workflows if you prefer avoiding command-line syntax.

Merging video files requires adding each source, verifying track selection matches your intent, and setting the output filename. The software preserves all audio languages, subtitle streams, and chapter data in a single container.

Why Choose MKVToolNix

The software delivers professional-grade container editing at zero cost. It handles batch operations via scripting, maintains pixel-perfect video data, and supports every major subtitle format. Windows 10, Windows 11, and modern Linux distributions all receive the same core feature set.

For mkvtoolnix download and setup, expect a straightforward process taking under five minutes on any modern system.