Hi, I bought a TV Samsung CRT screen, where the resolution is 4/3, rasberry PI 3b+ set batocera 5.21, the default emulators are set to formatia 16/9 , in the settings menu put 4/3, but nothing happens, the image is compressed. Example 16/9 -  , 4/3 - , the square in the middle means the image on the screen, the squares on the side of the frame to be removed, which would be so 4/3 - . I clearly described, what want? I write through an online translator. What is the name of the frame on the side of the image , overlay ?