[gst-devel] Can not decode incoming RTP packet

[孝恆 呂]

thanks for your reply,

it works now.

gst-launch udpsrc port=54962
caps="application/x-rtp,media=video,clock-rate=90000,encoding-name=H264,profile-level-id=428032,sprop-parameter-sets=\"Z0KAMukGCcg\=,aM48gA\=\=\",payload=96"
! rtph264depay ! decodebin2 ! ffmpegcolorspace ! autovideosink -v

2010/5/18 Wim Taymans <wim.taymans at gmail.com>

> On Tue, 2010-05-18 at 15:22 +0800, 孝恆 呂 wrote:
> > hi, all,
> >
> > I wrote a simple RTSP client to contact an existing RTSP IP CAM,
> >
> > and take a conversation to the CAM:
> >
> > >> OPTIONS * RTSP/1.0
> > >> CSeq: 30
> >
> >   << RTSP/1.0 200 OK
> >   << CSeq: 30
> >   << Public: DESCRIBE,SETUP,PLAY,OPTIONS,PAUSE,TEARDOWN
> >
> > >> DESCRIBE rtsp://myipcam/h264.sdp RTSP/1.0
> > >> CSeq: 31
> >
> >   << RTSP/1.0 200 OK
> >   << CSeq: 31
> >   << Cache-Control: no-cache
> >   << Content-Length: 171
> >   << Content-Type: application/sdp
> >   << x-Accept-Retransmit: our-retransmit
> >   << x-Accept-Dynamic-Rate: 1
> >
> >   << v=0
> >   << m=video 0 RTP/AVP 96
> >   << a=rtpmap:96 H264/90000
> >   << a=control:trackID=1
> >   << a=fmtp:96
> >
> packetization-mode=1;profile-level-id=428032;sprop-parameter-sets=Z0KAMukGCcg=,aM48gA==
> >
> > >> SETUP rtsp://myipcam/h264.sdp/trackID=1 RTSP/1.0
> > >> CSeq: 32
> > >> Transport: RTP/AVP;unicast;client_port=54962-54963
> >
> >   << RTSP/1.0 200 OK
> >   << CSeq: 32
> >   << Cache-Control: no-cache
> >   << Session: 135514808124572
> >   << Transport:
> > RTP/AVP;unicast;client_port=-10574--10573;server_port=6970-6971
> >
> > >> PLAY rtsp://myipcam/h264.sdp RTSP/1.0
> > >> CSeq: 33
> > >> Session: 135514808124572
> > >> Range: npt=0.000-
> >
>
>
> >   << RTSP/1.0 200 OK
> >   << CSeq: 33
> >   << Session: 135514808124572
> >   << Range: npt=now-
> >
> > it works and now the RTSP IP CAM continuously streams packets to my
> > local port number (#54962)
> >
> > but for some purpose I didn't create an UDP listener on port #54962,
> >
> > instead, I want to use gstreamer to playback the incoming video
> > stream,
> >
> > the below is my command:
> >
> >   gst-launch -v udpsrc port=54962 caps="application/x-rtp,
> > media=video, clock-rate=90000, encoding-name=H264" ! rtph264depay !
> > decodebin2 ! ffmpegcolorspace ! autovideosink
> >
>
> You forgot to pass the fmtp parameters to the depayloader on the caps.
> In particular, the depayloader does not have sprop-parameter-sets which
> contains SPS and PPS for the decoder.
>
> Wim
>
>
>
> > it works to receive the incoming packets,
> >
> > but error occurs at the decoding stage,
> >
> > ...
> > ...
> > 0:00:53.466058000  4272   019F78E8 ERROR                 ffmpeg .:0::
> > decode_slice_header error
> > 0:00:53.468058000  4272   019F78E8 ERROR                 ffmpeg .:0::
> > no frame!
> > 0:00:53.677070000  4272   019F78E8 ERROR                 ffmpeg .:0::
> > non-existing PPS referenced
> > 0:00:53.680071000  4272   019F78E8 ERROR                 ffmpeg .:0::
> > non-existing PPS 0 referenced
> > 0:00:53.682071000  4272   019F78E8 ERROR                 ffmpeg .:0::
> > decode_slice_header error
> > 0:00:53.683071000  4272   019F78E8 ERROR                 ffmpeg .:0::
> > no frame!
> > 0:00:53.685071000  4272   019F78E8 ERROR                 ffmpeg .:0::
> > non-existing PPS referenced
> > 0:00:53.687071000  4272   019F78E8 ERROR                 ffmpeg .:0::
> > non-existing PPS 0 referenced
> > 0:00:53.689071000  4272   019F78E8 ERROR                 ffmpeg .:0::
> > decode_slice_header error
> > 0:00:53.691071000  4272   019F78E8 ERROR                 ffmpeg .:0::
> > no frame!
> > ...
> > ...
> >
> > can anyone helps??
> >
> >
> >
> > --
> > Hsiao-heng Lu
> >
> ------------------------------------------------------------------------------
> >
> > _______________________________________________
> > gstreamer-devel mailing list
> > gstreamer-devel at lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>
>
>
>
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-- 
Hsiao-heng Lu
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