[FEATURE REQUEST] Languages in MKV files - fr-CA, pt-BR

Dear Plex users/devs,

Since a few month, MKV files support languages in IETF format (e.g.: fr-CA, pt-BR).

It would great if plex was able to display the correct associated languages like “French Canada”, “Portuguese Brasileiro” in the track list. It would solve a long term problem for international users.

I would also like to see this implemented. These will most likely only become more common in usage, since MKVToolNix uses the IETF field by default (I think).