At one of my part time jobs I work with video and launch monitors. There are things I like and things I don’t like with the video. Last year I hardly used the video. I was hitting the ball well, scoring well and looking at my swing would only screw me up because I know there are things that don’t look perfect to me.
Video is good for looking at your set up and posture. If you can down the line split screen with a pga pro, you can get the feeling of proper posture and you’ll remember it when you practice.