[pulseaudio-discuss] Help with receiving multicast

[Georg Chini]

Hi,

do you have a loopback from rtpsink.monitor to your default sink? The 
null sink
just discards the audio.
pactl load-module module-loopback source=rtpsink.monitor

Regards
        Georg

On 06.01.23 15:07, Jerry Geis wrote:
> Hi - Using ubuntu 20.04 LTS
>
>
> I have this in my startup:
> # Forward 11000 UDP to 9875 for pulse audio
> socat UDP4-RECVFROM:11000,fork UDP4-SENDTO:localhost:9875 &
>
> pacmd load-module module-null-sink sink_name=rtpsink format=s16be 
> channels=1 rate=44100
> pacmd load-module module-rtp-recv sink=rtpsink sap_address=239.168.3.10
>
> Doing netstat -g shows
> IPv6/IPv4 Group Memberships
> Interface       RefCnt Group
> --------------- ------ ---------------------
> lo              1      224.0.0.251
> lo              1 all-systems.mcast.net <http://all-systems.mcast.net>
> eno1            1      239.168.3.10
> eno1            1      224.0.0.251
> eno1            1 all-systems.mcast.net <http://all-systems.mcast.net>
> wlo2            1 all-systems.mcast.net <http://all-systems.mcast.net>
> lo              1      ff02::fb
> lo              1      ip6-allnodes
> lo              1      ff01::1
> eno1            1      ff02::fb
> eno1            1      ff02::1:ff1f:6c0e
> eno1            1      ip6-allnodes
> eno1            1      ff01::1
> wlo2            1      ip6-allnodes
> wlo2            1      ff01::1
>
> But I do not hear any audio when I multicast from asterisk. There is 
> another SIP speaker that receives the multicast but not my PC.
>
> What am I not doing correct ?
> Thanks
>
> Jerry

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