Can't use autovideosink for gstreamer on raspberry pi

[nguahoang]

Dear all,

My name is Hoang, I have a problem with video sink for gstreamer1.0 on
raspberry pi mode B.
I run this command:

<  gst-launch-1.0 udpsrc uri=udp://192.168.0.103:5002
caps="application/x-rtp, clock-rate=90000, payload=96"  ! rtpjitterbuffer
latency=500 ! rtph264depay ! decodebin ! autovideosink sync=false  >
 
on raspberry and I get error: 

<
Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
WARNING: from element
/GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0: Could not initialise
Xv output
Additional debug info:
xvimagesink.c(1768): gst_xvimagesink_open ():
/GstXvImageSink:autovideosink0-actual-sink-xvimage:
Could not open display (null)
>

I searched about x11 but I can't resolve. I run xvinfo, and I get: < 
xvinfo:  Unable to open display  >
Please help me resolve this problem. Can I use another video sink? Or how to
I run x11 on raspberry pi?

Thank you very much
Hoang.



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