I recently got my old TV tuner card out of the closed and decided to set
it up. The kernel's v4l2 drivers support my card and it works just fine
with tvtime. However, tvtime's overscan setting doesn't center the
image correctly; when increasing the overscan value (to get rid of some
random crap at the edges of the image with some stations), the image
doesn't "zoom" evenly in all directions but rather only to the bottom
and right. Is this a bug? Anyway to fix this?