webrtc rust sample problem

[Mathieu Duponchelle]

Do you have video encoders available on your system? Perhaps try to run
with GST_DEBUG=webrtcsink:6 to get more information.

On Tue, 2022-11-08 at 23:54 +0800, Jun Xiao via gstreamer-devel wrote:
> Hi,
> 
> When I tried to run webrtc rust sample in ubuntu 22.04 VM by
> following
> https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/tree/main/net/webrtc
> ,
> I met following problem:
> 
> $gst-launch-1.0 webrtcsink name=ws videotestsrc ! ws. audiotestsrc !
> ws.
> Setting pipeline to PAUSED ...
> Pipeline is live and does not need PREROLL ...
> Pipeline is PREROLLED ...
> Setting pipeline to PLAYING ...
> New clock: GstSystemClock
> Redistribute latency...
> Redistribute latency...
> 0:00:00.052590872  7339 0x7fb29006b8a0 ERROR             webrtcsink
> net/webrtc/src/webrtcsink/imp.rs:2298:gstrswebrtc::webrtcsink::imp:<w
> s>
> error: No caps found for stream video_0
> ERROR: from element /GstPipeline:pipeline0/GstWebRTCSink:ws: There is
> no codec present that can handle the stream's type.
> Additional debug info:
> net/webrtc/src/webrtcsink/imp.rs(2299): gstrswebrtc::webrtcsink::imp
> (): /GstPipeline:pipeline0/GstWebRTCSink:ws:
> Failed to look up output caps: No caps found for stream video_0
> Execution ended after 0:00:00.036349323
> Setting pipeline to NULL ...
> Freeing pipeline ...
> 
> Could anyone share any suggestions?
> Thanks,
> Jun