Click Screen Panel button to open Screen Panel:
Compute the largest 4x3 area of the output window
Display the 16x9 video to the largest 4x3 area of the output window, or the source 4x3 video stretched into the windscreen.
Keep Aspect Ratio
Keep aspect ratio of the video. Adjust the aspect ratio by dragging the slider.
Watching any DVD movie at 16:9 ratio on any screen mode, remove distortion and improve video quality