> If you have libavcodec installed (from "Recommends") then it might be some
> testing issue. There is no problem in bookworm.
I do have it installed. I also tried to install `libavcodec-extra` at
some point (when I saw that `mp4a-latm` 🙂), but it made no difference
of course.
> Firefox exposes some codec info in about:support#media
Thanks. When I "disable sandboxing" (by setting the three vars
I mentioned in my answer to Tomas) it says:
Audio Backend: alsa
Max Channels: 0
Preferred Sample Rate: 44100
Roundtrip latency (standard deviation): ...
Codec Support Information:
VP8 SW
VP9 SW
AV1 SW
Theora SW
FLAC SW
MP3 SW
Opus SW
Vorbis SW
Wave SW
with no input nor output devices.
So it looks like the codecs are found in that case, but the audio
backend is wrong (it should be Pulse, AFAIK) and the max channels shows
that there's really no output.
If I leave the sandboxing options at their default setting, then I get
a similar result except that the list of codecs is empty.
Stefan
