Cropping the video and removing the black portion
Use

ffplay -i input.mp4 -vf "crop=in_w:in_h-25:0:0"


If you're watching this full screen, then the display will show black bars if the resized video is not the same aspect ratio as your monitor. To achieve that, you'll have to crop horizontally as well. If your crop X pixels vertically, you'll have to crop (16/9)*X pixels horizontally.

To do this, use

(left and right)

ffplay -i input.mp4 -vf "crop=in_w-25*16/9:in_h-25:(ow-iw)/2:0"


(right only)

ffplay -i input.mp4 -vf "crop=in_w-25*16/9:in_h-25:0:0"