Camera Control Rig

Good day.
Perhaps someone can tell you how to make a Control Rig on a camera from this video:
Video from YouTube starting from 5:06, I want to achieve the same effect, but it doesn’t work…
Video

Control rig for the camera? Well, that’s new.
You know the camera is an actor component, right? Why would you want to rig it? You can’t rig it, cause there’s no such thing as rigging a camera.
Those are primarily constraints if you are talking about how he attaches the camera to the head.