Comment 1 for bug 475073

I have confirmed that the "affine" filter seems to be causing the problem in MLT. For some reason, when you change your locale (from en_US to fr_FR) it offsets the Y of the rotation to the very bottom of the screen.

Any locale that uses a "comma" instead of a "period" seems to have this issue. I think this is a bug inside the "affine" filter, so I'm going to leave this bug report as a place-holder, until I have a change to debug it.