Does exist an MKV meta tag / metadata editor?

Question

I'm looking for an MKV meta tag editor, I'm using PLEX Media Server and PLEX Media Center on my iMac to see movies.
PLEX is great because it automatically find and name all my movie library with year, director, gender, original title, description, movie poter art, etc.

Unfortunately, it saves all the data only on a app DB file without edit any tag on the MKV files.

A 20% of the movies needs to be fixed or PLEX needs help to find exactly the movie name, so if I need to move all my library elsewere, I need to do all the tagging work again.

So, does exists MKV meta tag editor?

Oh I'm a Mac user

Answer 1

Short answer, no. But it is possible. You need to write the tags as an xml file using matroska's docs. Then you need to merge it with the mkv file using the MKVToolnix tool set. The tool you want is mkvmerge GUI, use the attachments tab to add your xml file.