Symptom
When watching a movie from a DVD-Video disc there are black bars at the top and bottom of the screen even though Fill Screen or Present Video on Screen is selected in the Video menu.
Solution
This is normal due to differences in the monitor's aspect ratio, and the movie's aspect ratio. You do not need to change or correct anything.
For more information on why DVD-Video discs behave this way, see article 60795 "
Apple DVD Player: Why Black Bars Surround the Picture."