is RFC5761 (multiplex RTP/RTCP) supported in a GStreamer RTP element?

[Andres Gonzalez]

Hi,
Is there a GStreamer element that supports multiplexing RTP data and control pkt on a single port?

This is specified in RFC5761 and is signaled via SDP using the attribute:   "a=rtcp-mux"

I looked at the documentation for rtpmux but that appears to multiplex 2 streams into 1 stream which is different from multiplexing both the RTP and RTCP pkts from a single stream.

Thanks,
-Andres

[Dirk-Jan C. Binnema]

On Thursday Jul 28 2016, Andres Gonzalez wrote:

> Hi,
> Is there a GStreamer element that supports multiplexing RTP data and control
> pkt on a single port?
>
> This is specified in RFC5761 and is signaled via SDP using the attribute:  
> "a=rtcp-mux"
>
> I looked at the documentation for rtpmux but that appears to multiplex 2
> streams into 1 stream which is different from multiplexing both the RTP and
> RTCP pkts from a single stream.

I've been using a "funnel" for this purpose -- then RTCP and RTP packets
go in and feed a single updsink. Some kind soul in the ever-helpful
#gstreamer suggested this a while back, and it seems to work fine.

Kind regards,
Dirk.

--
Dirk-Jan C. Binnema                  Helsinki, Finland
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[Olivier Crête-3]

Hi,

This is fully supported, you can just feed the muxed stream into rtpbin into the rtp pad, or into the srtp/dtls-srtp elements into the rtp pad. And both will do the demultiplexing.

For the muxing, you can just use the funnel element.

Olivier

On July 28, 2016 10:35:29 AM EDT, Andres Gonzalez <[hidden email]> wrote:

>Hi,
>Is there a GStreamer element that supports multiplexing RTP data and
>control
>pkt on a single port?
>
>This is specified in RFC5761 and is signaled via SDP using the
>attribute:  
>"a=rtcp-mux"
>
>I looked at the documentation for rtpmux but that appears to multiplex
>2
>streams into 1 stream which is different from multiplexing both the RTP
>and
>RTCP pkts from a single stream.
>
>Thanks,
>-Andres
>
>
>
>--
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[Andres Gonzalez]

Dirk, thanks for your reply, I will check out the funnel element.
-Andres

[Andres Gonzalez]

Olivier, thanks for the additional information on the rtpbin usage.
-Andres