UPnP not working with converted files

The only ‘staff’ from Sonos who frequent these forums are forum moderators, not devs. You’d be better off, if you want to discuss the issue, to call Sonos Support directly to discuss it.

It doesn’t seem like you’re doing everything by the book though, it seems like you’re trying to hack it. More power to you, but I doubt Sonos staff will be able to help much.

Hacking it is indeed what it sounds like, because since May Sonos doesn't fullfill my needs.

Therefore I am trying to find satisfying solutions by my own means. I am tech savvy enough to do so, but even when I am trying to find solutions I find more errors with this device, which is disappointing.

Have you tried bubbleupnp?

It seems to be the goto Swiss Army knife for network music playback using android devices and upnp/dlna.

There is also a completely separate bubbleupnp server which can present existing upnp/dlna devices as chromecast and/or openhome devices on the network and supports on-the-fly transcoding.

I don’t have a use for chromecast or the android app, but I do use the server software to turn my media players into openhome devices, which gives per device queue playback rather than needing my tablet to always run and maintain the queue.

It seems Sonos may not be fully compatible with certain formats or configurations. Try these steps:

1. Check Sonos settings and update firmware.
2. Adjust transcoding settings in Symfonium.
3. Verify Sonos model compatibility with UPnP formats.
4. Ensure both devices are on the same network.

If the issue persists, contact Sonos support.

Have you tried using Plex?

It’s a great all-in-one solution for streaming media across devices using your network. It works with DLNA and supports various devices for seamless playback. There’s also a Plex server you can set up to stream content from your library to compatible devices.

I personally use it to organize my media and stream it to various players, including my smart TV, mobile devices, and even some older devices that support DLNA. It’s simple to set up and gives you more control over the playback and queues, especially if you have a lot of devices in your home network.

Hi garfieldairlines,

It sounds like you’ve been troubleshooting quite a bit—props to you for digging into this! Let me try to help:

1. UPnP Compatibility Check: Even though the Sonos documentation says 48 kHz is supported for Opus, Sonos can sometimes be picky when it comes to UPnP implementations and specific file formats. Have you tried verifying if the files are correctly tagged or if there’s any header metadata that might be causing compatibility issues?

2. Symfonium Logs: Symfonium has excellent logging features. Have you checked the logs to see if there’s any error or clue as to why Sonos is rejecting the playback?

3. Transcoding Issues: When transcoding to MP3, ensure that the files are encoded with a constant bit rate (CBR) at 320 kbps. Some devices have trouble with variable bit rate (VBR), even if the bitrate matches the specs.

4. UPnP Settings: Some UPnP servers let you tweak settings for compatibility. If you’re using a server like Jellyfin, Emby, or Plex, double-check if there’s an option to enforce compatibility or force transcode specifically for Sonos.

5. Alternative Protocols: If all else fails, you could explore DLNA or use Symfonium’s Chromecast/Audio Cast support as a workaround for better compatibility with Sonos.

Hopefully, one of these suggestions helps resolve the issue. If not, feel free to share more details, and we can troubleshoot further!

Upload your files to iBroadcast.com and tell Sonos to play from there.

It seems like the issue might be specific to Sonos handling UPnP for certain formats like Opus at 48 kHz and MP3 at 44.1 kHz, despite being officially supported. Since it works with other UPnP devices and over Chromecast, the problem likely lies with Sonos’ UPnP implementation. You may want to contact Sonos support or check their community forums for insights. Meanwhile, sticking to FLAC or experimenting with other formats might be a temporary workaround.

Sonos is picky with UPnP. Since your files work on other devices, try these fixes:

1. Use another UPnP server (BubbleUPnP, MinimServer, Plex).
2. Check transcoding – ensure Symfonium isn't wrapping MP3 in an unsupported format.
3. Enable proxy mode in Symfonium if available.
4. Try Plex or BubbleUPnP Server as a bridge.

It seems like Sonos isn't properly handling Opus 48 kHz or MP3 320kbps 44.1 kHz over UPnP, even though both are listed as supported. Since it works on other UPnP devices and Chromecast, the issue likely lies with Sonos' UPnP implementation.

Try these:

• Ensure Symfonium is correctly passing the file format (no extra conversion happening).
• Use another UPnP server (like BubbleUPnP) to rule out Symfonium issues.
• Test lower MP3 bitrates (256kbps or VBR) to see if Sonos processes them better.
• Submit a bug report to Sonos support—this might be a firmware issue.

Sadly, Sonos' Android experience is weaker compared to Apple/AirPlay.

It sounds like you're facing compatibility issues with Sonos and your transcoded files. Even though 320kb/s MP3 at 44.1kHz should work, it might be worth checking your transcoding settings, ensuring your Sonos firmware is up-to-date, or trying alternative UPnP servers like Plex or BubbleUPnP. Additionally, using AirPlay or Bluetooth might be a workaround if Sonos supports those. If the issue persists, reaching out to Sonos support could provide further solutions.