[gst-devel] webcam+rtp

roope.jarvinen at nokia.com roope.jarvinen at nokia.com
Thu Mar 26 13:45:17 CET 2009


Hi,

You need to set caps to the udpsrc element. As you are using rtpmp4vdepay, you also have to include config line in caps. Read this document and pay attention starting from line 262:

http://cgit.freedesktop.org/gstreamer/gst-plugins-good/tree/gst/rtp/README




 

>-----Original Message-----
>From: ext vaisakh.n [mailto:vaisakh.n at nestgroup.net] 
>Sent: 26 March, 2009 09:04
>To: Discussion of the development of GStreamer
>Subject: [gst-devel] webcam+rtp
>
>Hi all
>I was trying  to send the webcam captured video via RTP for 
>that i  ran pipeline in receiver side like this
>
>RECEIVER
>./gst-launch-0.10 udpsrc port=5000 ! rtpmp4vdepay ! ffdec_mpeg4 ! 
>ffmpegcolorspace ! xvimagesink
>
>SENDER
>./gst-launch -v v4lsrc ! ffenc_mpeg4 ! rtpmp4vpay ! udpsink  port=5000
>
>( on same pc  )
>/******************************/
>
>But In the RECEIVER side an error comes  like this Setting 
>pipeline to PAUSED ...
>Pipeline is live and does not need PREROLL ...
>Setting pipeline to PLAYING ...
>New clock: GstSystemClock
>ERROR: from element /GstPipeline:pipeline0/ffdec_mpeg4:ffdec_mpeg40: 
>Internal GStreamer error: negotiation problem.  Please file a 
>bug at http://bugzilla.gnome.org/enter_bug.cgi?product=GStreamer.
>Additional debug info:
>gstffmpegdec.c(1981): gst_ffmpegdec_chain (): 
>/GstPipeline:pipeline0/ffdec_mpeg4:ffdec_mpeg40:
>ffdec_mpeg4: input format was not set before data start 
>Execution ended after 30203619000 ns.
>Setting pipeline to PAUSED ...
>Setting pipeline to READY ...
>Setting pipeline to NULL ...
>FREEING pipeline ...
>/****************/
>
>
>is there any thing   wrong with  my pipeline?
>help me please
>Thanks in advance
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