Version 8.2.0 was released on . It is a significant "legacy" version because it was one of the last to include the original mmg (mkvmerge GUI) before it was fully replaced by the modern MKVToolNix GUI.
Downloading older software introduces risks, as security vulnerabilities may have been patched in later versions. Mkvmerge Gui V8-2-0 Download
You are running an older operating system (like Windows XP or early macOS versions) that is incompatible with newer Qt-based builds. Interface Familiarity: You specifically prefer the layout of the deprecated mkvmerge GUI over the newer MKVToolNix GUI Specific Bug Testing: Version 8