(…or for that matter, launch monitor and Trackman info)
Almost all people use videos of their swing to nitpick the position of the club at every point in the swing and micromanage every body part and how it is working. I was no different.
I don’t think knowing that your club is an inch off plane at P3 and you right elbow is bent 3* too much at P5 is helpful information.
From my own experience, that is a disaster. That is why I think things like GolfTec analysis and drawing lines on stills can do more harm than help.
Do you need to know your swing path is 4* inside/out instead of the proper 3.54* to insure the perfect push draw?
The golf ball does not lie, all you have to do is listen to it. Plus, the naked eye of a layman can see if a path is too far off…or just look at the divot…or the tee mark on the bottom of the driver…DUH!!!!!!
However, I find video (and computer generated stats) EXTREMELY helpful for one reason and one reason only. Since feel is definitely not real, video gives you a chance to see what your feel produces…or conversely what it feels like when you make a small change during a lesson with an instructor who knows what he is doing…or by yourself.
In other words, it’s all a tool to help you understand your feels, not to perfect your swing.