Is using movie-mode appropriate for what you want?
How is video displayed if you depress [5] of numeric keyboard?
(=back to default or movie-mode and/or pan scan deselected)
What is selected under
(rightclick >) Options > Preferences > Video > [General]?
e.g. re. "Cut top and bottom of video in full screen mode"
(Sorry have no version 2.34 installed any more; suggest you to
update)