PC Recording one certain area of a screen

[EvacTouchYT]

I saw the youtuber Tea record one area of their screen yet their character was moving, does anyone know how to replicate this?

 

[Adapting]

Could you possibly link the video so I could get a better understand of what you're talking about?

 

[ShadowOfDarkness]

YouTubers tend to have good recording software. This wouldn't have anything to do with the game, but rather with the software they are using to record the game.