using GSTRTPBIN to send different streams to different clients over one socket

[minimalniemand]

Hi folks,

still stuck with my conferencing solution.

I managed to use the gstrtpbin as my session manager, receiving packets from multiple clients (from recv_rtp_src pads), then do something with the audio data (basically mix the audio, so that each client can hear only the audio of all the other participants, but not himself)  and sending rtp packets back with the GSTRTPBINs send_rtp_sink.

But I don't really get, how do I go from there. I hooked up the automatically created send_rtp_src pads to a rtpmuxer and linked its source to a multiudp-sink, which has a list of all my clients. But, of course, all clients receive the same, muxed data (which seems logical to me).

How do I manage to get each client receive only the signal I want it to receive, while I send over only one socket? I believe the SSRC could take care of that, but the muxer sets all ssrcs to the same value, which makes the rtpbins session management kinda obsolete, doesn't it?

Wireshark shows the SSRCs of all outgoing packets are equal (as expected, but not wanted).

Or do I have flaws in my understanding of the concept? What do I need to put behind the RTPBIN to send different streams to different clients (each receiving only the one meant for him) over only one socket? Is it possible at all?
 

--
Michael Niemand

Albusstr. 17

60313 Frankfurt/M

Germany

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