Hi All, I'm in trouble using v4l2-ctl to set access priority to /dev/video0: user@COMP:~$ v4l2-ctl -d /dev/video1 --get-priority Priority: 2 user@COMP:~$ v4l2-ctl -d /dev/video1 --set-priority 3 Priority set: 3 *** then I immediately check for priority *** user@COMP:~$ v4l2-ctl -d /dev/video1 --get-priority Priority: 2 priority did'n change. how to solve?? regards. Andrea Bianchini