Inaccurate Opus bitrate requests sent to Navidrome?

[iwinux]

Issue description:

1. Settings → Offline, Cache and Download → Media → Offline cache and download quality → 128 kbps
2. Settings → Playback → Decoding and transcoding → Mobile & Wi-Fi maximum bitrate → 128 kbps
3. On Navidrome server, the logs show that actual bitrate requested by Symfonium is 131 kbps

See these 2 lines of logs:

# requested by Symfonium
time="2026-02-08T09:40:36+01:00" level=info msg="Streaming file" bitRate=131 cached=false format=opus originalBitRate=885 originalFormat=flac transcoding=true

# requested by Navidrome Web Player (and other Subsonic clients)
time="2026-02-08T11:42:52+01:00" level=info msg="Streaming file" bitRate=128 cached=false format=opus originalBitRate=885 originalFormat=flac transcoding=true

Seems to be a rounding error, as 128 * 1024 =~ 131072. Well I’m not sure whose calculation is the correct one

Additional info:

• Version: 13.7.0 (127660)
• Navidrome 0.59.0

Logs:

Upload description: file: debug-20260208_190420.zip nickname: iwinux

Additional information:

 

 

Reproduction steps:

 

 

Media provider:

Subsonic

Screenshots:

     

[Tolriq]

This is the usual 1024 vs 1000 depending on server.

The value is left as it is now as the impact is 0 and it prevents invalidating all users caches.

[iwinux]

Is there anything I can do to enforce consistent bitrate values at either the Navidrome side or Symfonium side? My intention is to reuse transcoding cache across different clients.

[Tolriq]

You probably restored an old backup or something ? Fresh install and settings do send 128 on Navidrome. There’s just no auto change of the value to keep cache valid.

[iwinux]

Nope. This is freshly installed and I’m still in free trial

I’ve tried various settings and this is what I’ve observed:

1. Normal streaming requests 128 kbps as expected and server logs show bitRate=128 too.

2. It only happens to “Offline cache and download”: setting 128 kbps on client side results in 131 kbps being requested.

3. Here comes the fun part: Setting max bitrate on NaviDrome to 128 kbps, in Symfonium click “Offline cache and download” and select Original: now it requests 128 kbps correctly.

   

[Tolriq]

So download only, can you show your download / media full settings ? And a screenshot of the offline bottom sheet just before you click on download ?

[iwinux]

Sure. With the settings in the screenshots, the bitrate requested is 131 kbps.

[Tolriq]

Ok thanks found the remaining case will be fixed in next release.