<div dir="ltr">Hello Matthew,<div><br></div><div>Yes, you were right, I was adding pad instead of requesting it. But I still not clear about how to do it correctly. </div><div>Is it the correct way to request the pad?</div><div>GstPadTemplate *templ = gst_element_class_get_pad_template(GST_ELEMENT_GET_CLASS(webrtc), "sink_%u");<br> GstPad *pad = gst_element_request_pad (webrtc, templ, NULL, NULL);<br></div><div><br></div><div>Then, I link this pad with payer, and start my pipeline. But right after that, I've got error inside of webrtc element:</div>ERROR:../../../../opensource/gstreamer/vendor/gst-build2/subprojects/gst-plugins-bad/ext/webrtc/gstwebrtcbin.c:2291:sdp_media_from_transceiver: assertion failed: (trans->mline == -1 || trans->mline == media_idx)<br>Bail out! ERROR:../../../../opensource/gstreamer/vendor/gst-build2/subprojects/gst-plugins-bad/ext/webrtc/gstwebrtcbin.c:2291:sdp_media_from_transceiver: assertion failed: (trans->mline == -1 || trans->mline == media_idx)<br><div><br></div><div>Did I miss something? </div><div><br></div><div>Best regards,</div><div>Anton.</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Oct 6, 2020 at 2:55 AM Matthew Waters <<a href="mailto:ystreet00@gmail.com">ystreet00@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div>
<div>How are you adding a pad?<br>
<br>
If you're calling gst_element_add_pad() with a newly created pad,
that's wrong. You need to request a sink pad from webrtcbin and
link to that.<br>
<br>
On 6/10/20 4:27 am, Anton Pryima wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Hello Matthew.
<div><br>
</div>
<div>I've tried to add one more sink pad to webrtcbin at my
sending side. Linked it, but right after that, I have:</div>
<div> <b><i>GStreamer-CRITICAL **: 20:16:08.832: chain on pad
sendonly:pad0 but it has no chainfunction</i></b></div>
<div><br>
</div>
<div>Should I just add pad, or do something more?</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 2:05 PM
Matthew Waters <<a href="mailto:ystreet00@gmail.com" target="_blank">ystreet00@gmail.com</a>> wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div>
<div>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>
</div>
<blockquote type="cite">
<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" target="_blank">ystreet00@gmail.com</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div>
<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>
</div>
<blockquote type="cite">
<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>
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