First 4 seconds are always black

[LouisK98]

I want to record Return to Caslte Wolfenstein gameplay along with the intro cinemtaic of the game which starts right as you boot it up, but when I record with OBS the first 4-5 seconds are always completely black, it has audio during it and after those few seconds everything is normal, but no matter what I do those first few seconds are always like that.