recompiling just finished and camera-grabber works out of the box (ekos)
CPU usage seems to be lower at about 30% than using gstreamer inbetween.
Unfortunatly sky sends deluge down to earth so I cant start tracking, waiting for clear sky.
So far, huge thanx for implementing!
--= human, without Windows™ =--
pls excuse my bad english!
Playing a bit with gstreamer, I realized that UYVY has more frame bytes than I've figured out.
So it would be better to update your code from svn as I've commited a newer version for V4L2 CCD which could be more reliable.