Is it possible to recreate or mimic the current behavior of the Genre field which has a preset drop-down item list, to a custom user list? Examples of custom user lists are Country and Language which I would like to add to Matroska/MKV/MKA.
I would like to put in my most used or so list of Countries, Languages, and others and hopefully their unicode character counterparts as well (for example: Macau / 澳門, Ukraine / Україна). Especially since I won't be able to actually remember and manually type in such non-English unicode characters after all.
Thanks in advance.