I want to transcode my flacs only when using mobile data. Inside symfonium I have set the “Mobile maximum bitrate” option to 192kbps, and set the “Wifi maximum bitrate” to original. On navidrome I have a transcode format called opus which uses the ffmpeg command “ffmpeg -i %s -ss %t -map 0:a:0 -b:a %bk -v 0 -f opus -”. I have not assigned this to the symfonium client inside navidrome, as far as I understand this will force all streams to be transcoded.
When I stream on wifi I get my flacs with no problem. However when I stream on mobile data (I am using wireguard to access the server) I still get flacs. Interestingly, in this case the information below the artist name says “OGG/OPUS” as expected, but under the details menu it still says it’s streaming as flac.
Am I missing something obvious or what is going on here?
Fantastic. For clarity, if I force transcoding for all streams on navidrome, it will appear in the details menu as Ogg/Opus at 192kbps. This is what confused me. Perhaps there should be info on the transcoding status inside the details menu, and some confirmation that you’re only streaming at 192kbps
What’s shown is the info I have, I can’t know that you force things on server side, I can’t now if the server do what I told it to do, this is Subsonic and the joy of server differences.
If you enable the option ignore server side transcoding in your server settings then on most providers it will show the non transcoded in detail view.
I see the same info on my setup, but why is it resampling to 48khz? The original is 44.1. Does this need to be configured in the Navidrome transcode string?
Also I have opus and aac options set on the server, does symfonium always prefer opus, even at a lower bitrate than say, an aac setting?
Opus does not support sample rates of 44.1kHz. But apparently Opus has a very good builtin resampling algorithm.
So to answer your first question, it’s not really Navidrome or ffmpeg doing this per se, but libopus. This is expected behavior for any Opus encoded stream.
You should probably do a quick search or ask an LLM or something before posting
