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<div class="moz-cite-prefix">It does, but codec-preferences has only
been tested for receive only streams. i.e. configuring which media
format to receive.<br>
<br>
On 5/8/20 9:40 pm, Anton Pryima wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAKaSWJwRk=Prt5WpPfJWo=UdQG=V3cYrWkn6Li6terhauuEOgg@mail.gmail.com">
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<div dir="ltr">So, setting caps on the transceiver is not enough?
It does not influent SDP generation?</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Wed, Aug 5, 2020 at 2:04 PM
Matthew Waters <<a href="mailto:ystreet00@gmail.com"
moz-do-not-send="true">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>I'm not sure on the correct way, I have never done
appsrc into webrtcbin. I only know that webrtcbin needs
the caps event on all of its sink pads before a coherent
sdp can be generated. How that occurs, you would need to
debug, or ask someone who can, help you debug.<br>
<br>
Cheers<br>
-Matt<br>
<br>
On 5/8/20 8:41 pm, Anton Pryima wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Hello Matthew,
<div><br>
</div>
<div>Thanks for quick reply,</div>
<div>Basically, I don't provide caps. But I'm pushing
samples to the appsrc - so it has caps by default. But
I was trying to set caps explicitly - with no success.</div>
<div>BTW, I should set caps on webrtcbin or on appsrc
sinkpad? Basically, I was able to proceed, with dirty
hack - calling on_negotiation_needed(webrtcbin,
userdata) callback function manually, right after I
configure a transceiver.</div>
<div><br>
</div>
<div>But what is the correct way?</div>
<div><br>
</div>
<div>Best regards,</div>
<div>Anton.</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Wed, Aug 5, 2020 at
8:20 AM Matthew Waters <<a
href="mailto:ystreet00@gmail.com" target="_blank"
moz-do-not-send="true">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>Are you providing caps to your appsrc? I can't
remember if appsrc will delay the caps event until
the first buffer or not so that may be a reason.<br>
<br>
On 5/8/20 5:55 am, Anton Pryima wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Hello all.<br>
<div><br>
</div>
<div>I have a pipe:</div>
<div>appsrc->rtph264pay->webrtcbin.sink</div>
<div><br>
</div>
<div>But, when I setting up everything, and
pipeline is not running yet, I received an
error: </div>
<div>DEBUG webrtcbin
gstwebrtcbin.c:5722:gst_webrtc_bin_change_state:
changing state: NULL => READY<br>
LOG webrtcbin
gstwebrtcbin.c:1341:_check_if_negotiation_is_needed:<sendonly>
checking if negotiation is needed<br>
LOG webrtcbin
gstwebrtcbin.c:1346:_check_if_negotiation_is_needed:<sendonly>
no negotiation possible until caps have been
received on all sink pads<br>
</div>
<div><br>
</div>
<div>After that, I'm starting pipeline and it
working fine, no issues:</div>
<div><br>
DEBUG webrtcbin
gstwebrtcbin.c:5722:gst_webrtc_bin_change_state:
changing state: READY => PAUSED<br>
DEBUG webrtcbin
gstwebrtcbin.c:5722:gst_webrtc_bin_change_state:
changing state: PAUSED => PLAYING<br>
</div>
<div><br>
</div>
<div>And that's all. No more
on-negotiation-needed callback. Nothing.</div>
<div><br>
</div>
<div>How to proceed further with webrtc
connection? How to re-init it after
the pipeline is running to make it call
on-negotiation-needed callback?</div>
<div><br>
</div>
<div>Thank you in advance,</div>
<div>Best regards,</div>
<div>Anton.</div>
</div>
<br>
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