Any way to edit metadata of MKV files (without re-encoding)? When watching a MKV file from the web in VLC, the title bar (see "#1" in image below) seems to be pulled from metadata, not the filename.

If you open the “Get Info” panel in VLC, you can change the title (“#2”) and then click “Save Metadata” (“#3”), but when the file is re-opened, the old information is shown.

I have not found any other Mac apps which can edit MKV metadata. Several offer to edit mp4 metadata, but that isn’t what I need.
I have found a way to do this using mkvpropedit which is part of mkvtoolnix.

mkvpropedit "foo.mkv" -e info -s title="This Is The Title"


There is a GUI wrapper for this app and other Mac installation instructions available at the official website.