If your DVD-Video features black picture bars on the sides, you can crop them with the Crop tab. This decreases the size of the video and as a result improves its quality. The Nero Recode default settings detect the bars and crop them automatically.      
The following setting options are available in the Crop area:
Option button
Automatic (recommended)
Detects black picture bars and crops them automatically.
Option button
Custom Crop
Enables the four text boxes for the manual cropping (top, bottom, right, left) and the Adjust button.
Button
Adjust
Opens a window and displays a frame from the video. You can use the mouse to define the four cropping areas (top, bottom, left, right) by hand.
The button is only enabled if the Custom Crop option button is selected.
Option button
Disable
Allows the video to be converted without cropping the borders.
 
See also
Nero Digital Video Settings


Crop Tab