looks like you are trying to play mono audio file from directory that has 

    <param name="channels" value="2"/> 

maybe in your local_stream.conf

On Fri, Sep 13, 2019 at 11:16 AM Allan Kristensen <ak@hejdu.dk> wrote:

Hello,

Out of nowhere we have started to get a lot of these:

[WARNING] switch_core_file.c:408 File has 1 channels, muxing to 2 channels will occur. 
[WARNING] switch_core_file.c:408 File has 1 channels, muxing to 2 channels will occur.  [WARNING] switch_core_file.c:408 File has 1 channels, muxing to 2 channels will occur. 

I've tried to look in the code for an explanation, without succes.

Does anyone know why this is appearing ?

Thank you,

  Allan

Running: FreeSWITCH Version 1.8.7+git~20190801T142138Z~b4a4ac33f8

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Regards,

Mirko

_________________________________________________________________________

The FreeSWITCH project is sponsored by SignalWire https://signalwire.com
Enhance your FreeSWITCH install with disruptive priced SMS and PSTN services.
Build your next product on our scalable cloud platform.

Join our online community to chat in real time https://signalwire.community

Professional FreeSWITCH Services
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Official FreeSWITCH Sites
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https://freeswitch.org/confluence
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