webrtc rust sample problem

[Jun Xiao]

Hi Mathieu,

Thanks for bearing with my basic questions as I am new to gstreamer.
How could we specify video encoders? Aren't sw encoders can be used in
case there are no hw encoders?

Thanks,
Jun

On Wed, Nov 9, 2022 at 12:11 AM Jun Xiao <xiaojuntime at gmail.com> wrote:
>
> Thanks Mathieu,
>
> Following is the message with debug log:
> gst-plugins-rs$ GST_DEBUG=webrtcsink:6 gst-launch-1.0 webrtcsink
> name=ws videotestsrc ! ws. audiotestsrc ! ws.
> Setting pipeline to PAUSED ...
> 0:00:00.017416246  7466 0x55655b56c2d0 DEBUG             webrtcsink
> net/webrtc/src/webrtcsink/imp.rs:1192:gstrswebrtc::webrtcsink::imp:<ws>
> preparing
> Pipeline is live and does not need PREROLL ...
> Pipeline is PREROLLED ...
> Setting pipeline to PLAYING ...
> New clock: GstSystemClock
> 0:00:00.018513516  7466 0x55655b5fc580 INFO              webrtcsink
> net/webrtc/src/webrtcsink/imp.rs:2260:gstrswebrtc::webrtcsink::imp:<ws:video_0>
> Received caps event Caps(Event { ptr: 0x55655b603150, type: "caps",
> seqnum: Seqnum(50), structure: Some(GstEventCaps { caps: (GstCaps)
> video/x-raw, format=(string)ABGR64_LE, width=(int)320,
> height=(int)240, framerate=(fraction)30/1,
> multiview-mode=(string)mono, pixel-aspect-ratio=(fraction)1/1,
> interlace-mode=(string)progressive }) })
> Redistribute latency...
> 0:00:00.028336475  7466 0x55655b5fc5e0 INFO              webrtcsink
> net/webrtc/src/webrtcsink/imp.rs:2260:gstrswebrtc::webrtcsink::imp:<ws:audio_0>
> Received caps event Caps(Event { ptr: 0x7f77680034a0, type: "caps",
> seqnum: Seqnum(61), structure: Some(GstEventCaps { caps: (GstCaps)
> audio/x-raw, format=(string)S16LE, layout=(string)interleaved,
> rate=(int)44100, channels=(int)1 }) })
> Redistribute latency...
> 0:00:00.095827060  7466 0x7f776c05aea0 ERROR             webrtcsink
> net/webrtc/src/webrtcsink/imp.rs:2298:gstrswebrtc::webrtcsink::imp:<ws>
> 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 0:00:00.077864232
> Setting pipeline to NULL ...
> 0:00:00.101370102  7466 0x55655b56c2d0 INFO              webrtcsink
> net/webrtc/src/webrtcsink/imp.rs:1207:gstrswebrtc::webrtcsink::imp:<ws>
> unpreparing
> Freeing pipeline ...
>
> On Tue, Nov 8, 2022 at 11:59 PM Mathieu Duponchelle
> <mathieu at centricular.com> wrote:
> >
> > 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