Question / Help Recording an old game (stretched square)

[Goyangibear]

I'm recording an old game, Bully: Scholarship Edition, and when I record it it stretches out to a rectangular shape. How to I keep it at it's original size as a square?

 

[Tarumes]

Right Klick on Source "Game Capture" --> Transform --> Fit to Screen
Output is not stretched but black bars appear left and right
if you dont want the black bars you have to change the Base scene to square in Settings ---> Video --> Base (Canvas) Resolution