Advanced Linux users can find packages on Flathub or via command-line tools like pacman for Arch Linux.
The suite consists of several specialized utilities, most of which are accessible through the user-friendly : mkvtoolnix mix download
To ensure you are getting the safe, official version, always use the developer's primary site or verified repositories: Advanced Linux users can find packages on Flathub
If you don't want to install software, you can download a 7zip archive from the official site that runs directly from a USB drive. How to "Mix" (Merge) Your First File The core engine that "mixes" or merges various
For users who prefer automatic updates, a Store Edition is available for a small fee to support development.
The core engine that "mixes" or merges various media streams into one MKV file.
Matroska tools for Linux/Unix and ... - MKVToolNix Downloads