[gst-devel] simple raw video RTP -- still no joy

[Bert Douglas]

I followed Wim's very helpful advice.  It goes a bit further than before.
Sadly, then there is a segment fault.

# rtp-server
gst-launch  -v \
      videotestsrc pattern=red \
   !  video/x-raw-rgb, width=400, height=300, framerate=\(fraction\)10/1 \
   !  rtpvrawpay ssrc=1 timestamp-offset=0 seqnum-offset=0 \
   !  udpsink host=127.0.0.1 port=51234

# rtp-client
caps="application/x-rtp,media=(string)video,clock-rate=(int)90000,encoding-name=(string)RAW,sampling=(string)RGBA,depth=(string)8,width=(string)4,height=(string)4,colorimetry=(string)SMPTE240M,payload=(int)96,ssrc=(uint)1,clock-base=(uint)0,seqnum-base=(uint)0,framerate=(fraction)10/1"
gst-launch -v  \
      udpsrc uri=udp://127.0.0.1:51234 caps=$caps \
   !  rtpvrawdepay \
   !  video/x-raw-rgb,format=\(fourcc\)RGBA,framerate=\(fraction\)10/1 \
   !  ffmpegcolorspace \
   !  ximagesink


$ . rtp-client.sh
Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
/GstPipeline:pipeline0/GstRtpVRawDepay:rtpvrawdepay0.GstPad:src: caps =
video/x-raw-rgb, width=(int)4, height=(int)4, format=(fourcc)0x00000000,
framerate=(fraction)0/1
/GstPipeline:pipeline0/GstRtpVRawDepay:rtpvrawdepay0.GstPad:sink: caps =
application/x-rtp, media=(string)video, clock-rate=(int)90000,
encoding-name=(string)RAW, sampling=(string)RGBA, depth=(string)8,
width=(string)4, height=(string)4, colorimetry=(string)SMPTE240M,
payload=(int)96, ssrc=(uint)1, clock-base=(uint)0, seqnum-base=(uint)0,
framerate=(fraction)10/1
Segmentation fault


On Fri, Sep 3, 2010 at 10:07 AM, Bert Douglas <bertd at tplogic.com> wrote:

> Thanks much to Wim for the excellent pointer.
>
> --Bert
>
>
> On Fri, Sep 3, 2010 at 3:10 AM, Wim Taymans <wim.taymans at gmail.com> wrote:
>
>> On Thu, 2010-09-02 at 23:54 -0500, Bert Douglas wrote:
>> > Tristan tried to help me.  I tried setting caps as recommended. Still
>> > not working.
>>
>> You're doing it wrong. read the instructions in this document carefully:
>>
>>
>> http://cgit.freedesktop.org/gstreamer/gst-plugins-good/tree/gst/rtp/README#n251
>>
>> Wim
>>
>>
>> > Thanks for looking.
>> >
>> > # rtp-server
>> > gst-launch  \
>> >       videotestsrc pattern=red \
>> >    !  video/x-raw-rgb, format=\(fourcc\)RGB, width=4, height=4,
>> > frame-rate=1/1 \
>> >    !  rtpvrawpay \
>> >    !  udpsink host=127.0.0.1 port=51234
>> >
>> > # rtp-client
>> >
>> CAPS="application/x-rtp,media=(string)video,clock-rate=(int)90000,encoding-name=(string)RAW,"
>> > CAPS=
>> > $CAPS"sampling=(string)RGB,depth=(int)8,width=(int)4,height=(int)4"
>> > gst-launch  \
>> >       udpsrc uri=udp://127.0.0.1:51234 caps=$CAPS \
>> >    !  rtpvrawdepay \
>> >    !  video/x-raw-rgb, format=\(fourcc\)RGB, width=4, height=4,
>> > frame-rate=1/1 \
>> >    !  ffmpegcolorspace \
>> >    !  ximagesink
>> >
>> > Setting pipeline to PAUSED ...
>> > Pipeline is live and does not need PREROLL ...
>> > Setting pipeline to PLAYING ...
>> > New clock: GstSystemClock
>> > 0:00:00.056868267 14918      0x1188c90 ERROR           rtpvrawdepay
>> > gstrtpvrawdepay.c:240:gst_rtp_vraw_depay_setcaps:<rtpvrawdepay0> no
>> > width specified
>> > ERROR: from element /GstPipeline:pipeline0/GstUDPSrc:udpsrc0: Internal
>> > data flow error.
>> > Additional debug info:
>> > gstbasesrc.c(2562): gst_base_src_loop
>> > (): /GstPipeline:pipeline0/GstUDPSrc:udpsrc0:
>> > streaming task paused, reason not-negotiated (-4)
>> > Execution ended after 18091128 ns.
>> > Setting pipeline to PAUSED ...
>> > Setting pipeline to READY ...
>> > Setting pipeline to NULL ...
>> > Freeing pipeline ...
>> >
>> >
>> >
>> >
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