mediainfo as a new package?
Could you add a new package?
MediaInfo
https://mediaarea.net/en/MediaInfo/Download/Source
in current version: v0.7.99
(SO with CLI)
In testing repository already exists libmediainfo (v0.7.80), but only
SO.
https://bugs.alpinelinux.org/issues/3935
(from redmine: issue id 7873, created on 2017-09-20, closed on 2017-11-29)