I notice that my Volumio doesn’t index opus audio files. even though the files are accessible (double-checked the permissions) and mpd -version indicates that it supports opus through ffmpeg, libopus0 is installed.
In /etc/mpd.conf I have set log_level to verbose and restarted mpd, now I can see that it says:
Dec 26 13:48 : update: ignoring unrecognized file NAS/public/music/Rio_Reiser/Live_in_der_Seelenbinder-Halle/.Disc_1_-_13_-_Ich_denk_an_Dich.opus
and the same for all my other opus files. I have another raspberrypi running Raspbian buster with mpd 0.21.5 which recognizes and plays opus files just fine. I see, volumio is based on Jessie, which is really old (stretch is already oldstable, wheezy old and buster stable). Could it be that in the meantime, there were changes to the opus audio format that break compatibility with the old version of libopus0 in volumio/jessie (1.1) ?
Thanks in advance for any hints