unable to execute /usr/bin/gst-launch: Operation not permitted

[frtachi .]

Hi! I have a problem with gstreamer on my nokia n9. I'm trying to capture a
 photo from my back camera. I get operation not permitted even as root.
This is what comes out:

~ $ GST_DEBUG=6 gst-launch -v v4l2src ! ffmpegcolorspace ! pngenc !
filesink location=test.png
Setting pipeline to PAUSED ...
ERROR: Pipeline doesn't want to pause.
ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Could not
open device '/dev/video0' for reading and writing.
Additional debug info:
v4l2_calls.c(507): gst_v4l2_open ():
/GstPipeline:pipeline0/GstV4l2Src:v4l2src0:
system error: Permission denied
Setting pipeline to NULL ...
Freeing pipeline ...
~ $

Help me please!
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