@Chiva_Von_Chiva You can change the video mode:
https://recalbox.gitbook.io/documentation/tutorials/video/display-configuration/complete-guide-on-video-configuration
BUT, I believe your TV is 4k, and there is a known bug with 4k TVs and Rpi4:
https://gitlab.com/recalbox/recalbox/-/issues/1384
And this bug will be fixed in the next version:

Fix detection of 4k screen (# 1384)
https://gitlab.com/recalbox/recalbox/blob/master/CHANGELOG.md

@substring
I will ^^

it does not detect it, I tried that the ps3 and if it works it is not a thing of the Bluetooth, before I put the control of ps4 with usb then it removed it, pressed the button ps and it worked, I do not know what happens

Hummm
La carte SD soit toujours être en fat32 mais l'USB pour stocker les roms etc... Depuis la 4.1 peut être en exfat

@voljega indeed found out here https://forum.recalbox.com/topic/2973/xbox-360-wireless-controllers-work-but-keep-flashing/3

indeed, mupen is autoconfigured like any other emulator 😉