Dear Guennadi, Andy Thank you for your help !! It is possible to identify it by this method. check videoX /sys/bus/soc-camera/devices/0-0/video4linux:video0 /sys/bus/soc-camera/devices/1-0/video4linux:video1 get name /sys/bus/soc-camera/devices/0-0/control/name -> mt9t112 /sys/bus/soc-camera/devices/1-0/control/name -> tw9910 > $ v4l2-ctl --list-devices > $ v4l2-ctl -d /dev/video0 -D > $ v4l2-ctl -d /dev/video0 --log-status > $ v4l2-ctl -d /dev/video1 -D > $ v4l2-ctl -d /dev/video1 --log-status wow... I didn't know this way. Thank you for your nice advice !! It will be good help for me Thanks again !! Best regards -- Kuninori Morimoto -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html