When the 2 rtp streams are playing together everything sounds fine.
But if I pause 1 of the incoming streams and restart it to play another file (using the API, not command line) then I get for a short duration some static/interference.
If my target doesn't mix and listens only the play/paused/restarted stream using the following command
udpsrc port=p -> rtpjitterbuffer -> rtpL16depay -> liveadder -> audioconvert -> alsasink sync=false
then I don't get the static/interference.
So I guess there is maybe some parameters to add to the liveadder or some elements to add to the pipeline to fix my problem...
I hope someone might be able to help,
Thanks in advance