gstreamer caps and v4l2

[Gary Thomas <gary@mlbassoc.com>]

I know this is slightly off topic for this list, but I hope
someone here can help me.  I have asked on the gstreamer list,
but it's quite often slow/unreliable.

I'm trying to capture video using v4l2src.  The problem is
that my sensor only delivers bayer RGB and I can't figure
out what the caps should be to match.  The Linux driver calls
the video mode SGRBG10

When I tried these caps
   'video/x-raw-bayer,format=(string)grbg,width=2592,height=1944'
it failed with this assertion:
    gst_v4l2src_fixate: assertion `G_VALUE_TYPE (v) == GST_TYPE_LIST' failed
So, I thought I might need a more general string:
   'video/x-raw-bayer,format=(string){bggr,grbg,gbrg,rggb},width=2592,height=1944'
which now fails with:
   gst_value_get_fourcc: assertion `GST_VALUE_HOLDS_FOURCC (value)' failed

Any ideas how I tell v4l2src the details of my sensor?

Thanks

-- 
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Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
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