[MPlayer-users] shifted image in fast scenes/moving

[Peter Irbizon]

Hello, I would like ask you for help:
http://s33.postimg.org/y6muwxe27/pic_vid.jpg
During fast scenes (or when fast moving with  my usb camera) I have always
under one line shifted picture (but after a while when it stabilizes
picture everything is clear again).
My deinterlacing is set to pp=lb.

Any idea how could I supress this line shift?
Many thanks.