Why does OBS need to make video settings twice?

Question

Video capture

I make video recording settings, indicating that I do not need to trim the video

screen 1

and here you can see that you still need to adjust the base resolution (as I understand it, you mean the original one?), And cropped, but why? Those. it turns out that in any case it resizes from 1920x1080 to 1920x1080? And, doesn't the program itself know what resolution it needs to record?

screen 2

Answer 1

You are confusing, in the first case you are really specifying permission settings for writing. In the second one, you specify what output resolution your broadcast will have.