Console command for free camera flying?

Does anyone know the command where the gameworld freezes and you can fly as camera through the world?

NVidia ansel?

by clicking “^” button a console commands opens up ingame and you can type in a command where you have a freeview of the world like flying around and the suroundings in the world are frozen. I am not sure if those are 2 different commands tho. but that is whjat I meant. Like in this video here at minute 5:21 :