[gst-devel] simple raw video RTP -- still no joy
Wim Taymans
wim.taymans at gmail.com
Fri Sep 3 18:47:07 CEST 2010
On Fri, 2010-09-03 at 11:35 -0500, Bert Douglas wrote:
> I followed Wim's very helpful advice. It goes a bit further than
> before.
> Sadly, then there is a segment fault.
You didn't copy the caps correctly, the width and height are not right
in the receiver. The crash is because of a bug in the depayloader
(fixing now).
Wim
>
> # 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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