multiplexed and bundled rtp / rtcp

[Jose Antonio Santos Cadenas]

2013/3/16  <bryandonnovan at gmail.com>:
> Hello,
>
> I'm new to gstreamer (v 1.0 on ubuntu) and  trying to understand a concept
> with udpsrc and rtp
>
> All of the examples that I have see show different payload types, rtc & rtcp
> on separate ports.  However, in practice, these are often all on the same
> port.
>
> But the udpsrc caps description includes a payload type, clock-rate, mime
> type all specific to just one of the multplixed streams.
>
> I've looks like rtpbin can demultiplex the RTP/RTCP/payloads/SSRCs into
> dynamic pads.
>
> So I think that what I want is a udpsrc that specifies only the port number
> and feeds the rtpbin, then to assign types to the dynamic output pads to
> feed the decoders / muxers downstream.
>
> Can someone help me understand this concept?

Hi, currently I think that there is nothing in gstreamer to deal with
this. I've just started developing an element that receives a bundled
stream and splits into rtp and rtcp.

>
> The udpsrc will be receiving VP8/Opus RTP, along with RTCP for each payload
> type.  I want to turn that into a WebM file.
>
> If I demux the PTs on the sending side, for example, send only Opus on a
> sigle port with no RTCP then I can transcode and mux without a problem.  But
> when other data is multiplexed in, I get an error from the udpsrc and the
> pipeline exits.
>
> Thanks for any advice.
>
>
>
>
>
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