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    <div class="moz-cite-prefix">Add a new sink pad on the webrtcbin be
      requesting a new sink pad, wait for caps to reach the new pad and
      then perform another sdp negotiation cycle.<br>
      <br>
      On 3/10/20 6:49 pm, Anton Pryima wrote:<br>
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cite="mid:CAKaSWJwN-m8cWgnD_5EGNC+38WsL=Wtn=8fQOcco7D5Hv7GWZg@mail.gmail.com">
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      <div dir="ltr">Hello Matthew, 
        <div><br>
        </div>
        <div>Thanks for your quick response.</div>
        <div><br>
        </div>
        <div>What is the best way to achieve this? Add one more
          transceiver at the sending side for the same pipeline? Or I
          need to create another pipeline with the same webrtc sink?</div>
        <div><br>
        </div>
        <div>Best regards,</div>
        <div>Anton.</div>
      </div>
      <br>
      <div class="gmail_quote">
        <div dir="ltr" class="gmail_attr">On Sat, Oct 3, 2020 at 2:16 AM
          Matthew Waters <<a href="mailto:ystreet00@gmail.com"
            moz-do-not-send="true">ystreet00@gmail.com</a>> wrote:<br>
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            <div>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.<br>
              <br>
              Cheers<br>
              -Matt<br>
              <br>
              On 3/10/20 4:09 am, Anton Pryima wrote:<br>
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              <div dir="ltr">Hello all.<br>
                <div><br>
                </div>
                <div>I have an issue with the webrtcbin and changing
                  pipes. </div>
                <div>My sender is:</div>
                <div><br>
                </div>
                <div>appsrc->parser->payer->webrtcbin</div>
                <div><br>
                </div>
                <div>My receiver is:</div>
                <div><br>
                </div>
                <div>webrtcbin->depayer->parser->decodebin->autovideosink.</div>
                <div><br>
                </div>
                <div>My app source can push 2 kinds of samples: H264 and
                  H265. I start my send/recv pipelines on the H264
                  codec. </div>
                <div>Then, when the pipeline is PLAYING and I have the
                  h265 sample, I put a blocking probe and dynamically
                  reconfigure the sending pipe to <b>appsrc->h265parser->h265payer->webrtcbin</b>.
                  And everything is fine and my sending pipe continues
                  working.</div>
                <div>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<b>
                    webrtcbin->h265depay->h265parse->decodebin->autovideosink</b>.</div>
                <div>But right after that, I hove:</div>
                <div> <b>GStreamer-CRITICAL **: 16:24:34.926: Padname
                    src_0 is not unique in element webrtcbin0, not
                    adding</b><br>
                </div>
                <div>Error and frames stop flowing through webrtc src_0
                  pad.</div>
                <div><br>
                </div>
                <div>Can anyone suggest what am I doing wrong and how to
                  resolve this?</div>
                <div><br>
                </div>
                <div>Best regards,</div>
                <div>Anton.</div>
              </div>
              <br>
              <fieldset></fieldset>
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