MKVmerge GUI—now part of the unified MKVToolNix GUI—is the premier open-source tool for creating, splitting, and muxing Matroska (.mkv) files. The v8.2.0 release is a historic milestone for the project, as it represents the period where developer Moritz Bunkus transitioned from the legacy "mkvmerge GUI" (mmg) layout over to the modernized, feature-rich MKVToolNix GUI.
Operating the software follows a simple drag-and-drop workflow: Mkvmerge Gui V8-2-0 Download
Recommendation: Download the latest from https://mkvtoolnix.download/downloads.html unless you have a strict legacy requirement (e.g., supporting an old hardware player that fails with newer MKVToolNix). MKVmerge GUI—now part of the unified MKVToolNix GUI—is