[mythtv-users] Can't change VIDIOC_S_FMT

[mythtv at pdebrabander.nl]

I'm trying to set vidoe capture to 720x572, but it does not work.


ivtvctl -f width=720,height=572
ioctl: VIDIOC_S_FMT
        Before:
        Type   : Video Capture
        Width  : 480
        Height : 480
ioctl: VIDIOC_S_FMT failed

        After:
        Type   : Video Capture
        Width  : 480
        Height : 480

what can here be wrong