Created attachment 220064 [details]
mkvtoolnix is useful from CLI but maybe not as easy to use. Let's apply ports r556538 trick.
FreeBSD 11.4 still has ~1 year of support before EOL. Build log: https://reviews.freebsd.org/P462
A commit references this bug:
Date: Sat Dec 5 14:44:36 UTC 2020
New revision: 557065
Disable QT5 on FreeBSD < 12
Apply the same workaround as in
to provide a binary package without QT5 for legacy releases.
Submitted by: jbeich