[pulseaudio-discuss] pulse audio receive multicast

[Sean Greenslade]

On Thu, Dec 29, 2022 at 01:01:02PM -0500, Jerry Geis wrote:
> I am trying to get a computer to receive multicast with pulse audio on
> 20.04 LTS.
> 
> on the receive computer I did this
> pacmd load-module module-null-sink sink_name=rtpsink
> pacmd load-module module-rtp-recv sink=rtpsink sap_address=239.168.3.10
> port=11000
> 
> From another computer I sent multicast audio with asterisk. Other devices
> received the multicast - but the receive computer did not. With asterisk I
> sent on port 239.168.3.10:11000
> 
> Is there something else I have to do to receive multicast and play it?

The rtp-recv module does not support passing port as an argument. See
the docs for the only supported arguments:

https://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/User/Modules/#module-rtp-recv

The SAP port is hard-coded as 9875.

--Sean