Thank you, I'll use the locate and number of pixel.. It's very useful!

Il 27/02/2013 10.25, ha scritto:
Try enabling the "locate" option and possibly the text options to list
the number of changed pixels. You'll probably find you need to tune
your settings further - from a quick eyeball I can see a *lot* of
changes in the window (from the movement of the trees) and from the
reflections on the table. You may also need to enable the smart_mask
setting or create a custom mask to de-tune the tree area.

You may also need to raise the minimum frames.