The qcamera example provided in demos folder under mobile category does not work on n9

1. Run the application qcamera available in demo/4.7/mobile/qcamera in QTSDK or
Qt4.7 sources
The example uses QCamera apis and subclass of QAbstractVideoSurface to capture
frames

EXPECTED OUTCOME:
Frames on Video Surface

ACTUAL OUTCOME:
Initially gives -
'Could not negotiate format'

After adding -
QVideoFrame::Format_UYVY to the supported pixel format list,
the below error comes,

virtual GstElement* QGstreamerGLTextureRenderer::videoSink() : Fallback to
QVideoSurfaceGstSink since EGLImageTextureHandle is not supported
Failed to start video surface
CameraBin error: "Internal data flow error."

The videosurface is not started and active so as to paint.