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DLNA over Ethernet streaming converted to MP3 [Solved]

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Boomzilla:
My music server is in a computer room at one end of my house; my audio room is at the other end.  I have Ethernet cable run between the two.  I stream to the audio room via DLNA over Ethernet.  There are four destinations available to stream to:

Oppo UDP-205 disc player
McIntosh MVP901 disc player
McIntosh MX201 processor
Samsung TV

If I stream directly to the Oppo via DLNA, I get PCM audio at the destination.
But if I stream directly to either McIntosh product via DLNA, I get "MP3-320" output showing as the audio format.

However, and this is the funny part - if I stream directly to the Oppo or the McIntosh MVP-901, and then use their coaxial digital S/PDIF outputs to send the stream to the MX201 processor, I get "PCM audio" showing as the audio format.

McIntosh has been unable to reproduce these results.  They claim that they always get PCM audio when that's what is sent.

So my questions are:

What's going on here? 

Why are the McIntosh components auto-magically down-converting my PCM streaming to MP3 (if I stream DLNA over Ethernet directly to them)? 

What's different about the digital coaxial S/PDIF input on the processor that allows IT to see PCM audio when I can't get the same from the Ethernet inputs?

Thanks - Boomzilla

bob:

--- Quote from: Boomzilla on May 02, 2018, 11:53:13 pm ---My music server is in a computer room at one end of my house; my audio room is at the other end.  I have Ethernet cable run between the two.  I stream to the audio room via DLNA over Ethernet.  There are four destinations available to stream to:
...

--- End quote ---
Check your DLNA server configuration in MC.
It will convert everything that isn't mp3 to mp3 by default.
You can fine tune it, add another server for a specific rendering device, etc.

If you haven't changed the stock settings my guess is that the Oppo is not telling the truth ;)

Boomzilla:
Hi bob -

You're a genius! 

Using  "Tools > Options > Media Network > Client Options > Audio Conversion"

I found my "conversion" option set (by default) to "convert audio if necessary."  I changed it to "Don't convert audio."

I found my "encoder" option set (by default) to "MP3 High Bandwidth."  I changed it to "PCM 16-bit."

Thank you kindly for the feedback!

Boomzilla:
Hi again, bob.

Despite making the changes I listed, the destination devices are still (occasionally) reporting that they're playing MP3 instead of PCM.  Any idea why?

bob:

--- Quote from: Boomzilla on May 03, 2018, 10:32:48 pm ---Hi again, bob.

Despite making the changes I listed, the destination devices are still (occasionally) reporting that they're playing MP3 instead of PCM.  Any idea why?

--- End quote ---

The option you changed is for streaming MC to MC as a library server client.
For DLNA devices, you need to change the DLNA server options in
Tools > Options > Media Network >Add or Configure DLNA servers.

Also, it will play mp3 of course if the source format is mp3 when you specify "Original Format"

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