webrtc: Padname src_0 is not unique in element webrtcbin0, not adding

[Matthew Waters]

It sounds like you're attempting a renegotiation of the stream format
for the same mline.  That is currently an entirely unsupported
reconfiguration scenario :).  For now should add a new stream and remove
the old stream if you want to change formats.

Cheers
-Matt

On 3/10/20 4:09 am, Anton Pryima wrote:
> Hello all.
>
> I have an issue with the webrtcbin and changing pipes. 
> My sender is:
>
> appsrc->parser->payer->webrtcbin
>
> My receiver is:
>
> webrtcbin->depayer->parser->decodebin->autovideosink.
>
> My app source can push 2 kinds of samples: H264 and H265. I start my
> send/recv pipelines on the H264 codec. 
> Then, when the pipeline is PLAYING and I have the h265 sample, I put a
> blocking probe and dynamically reconfigure the sending pipe to
> *appsrc->h265parser->h265payer->webrtcbin*. And everything is fine and
> my sending pipe continues working.
> On the receiving side, I've got the signal through the data channel
> about codec change from the sending side and configure my receiving
> pipeline to*webrtcbin->h265depay->h265parse->decodebin->autovideosink*.
> But right after that, I hove:
>  *GStreamer-CRITICAL **: 16:24:34.926: Padname src_0 is not unique in
> element webrtcbin0, not adding*
> Error and frames stop flowing through webrtc src_0 pad.
>
> Can anyone suggest what am I doing wrong and how to resolve this?
>
> Best regards,
> Anton.
>
> _______________________________________________
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> gstreamer-devel at lists.freedesktop.org
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