Self correction of swing flaw

Aside from personal one-on-one professional lesson(s); what is the best way to go about correcting a fault noticed when reviewing your swing video?  Once identifying a particular fault, do you merely practice in overcoming it and then do another video for confirmation?  How long should you practice before doing a subsequent video?

I know, many would say "seek professional lessons", but that is not the question. I also realize it is rather subjective.

Specifically, last video showed a DTL view as swing plane change and coming over the top on outside in arc. I also know it is not something that occurs regularly as most shots are straight. None-the-less I was surprised (enlightened?) to see it.

My personal belief is that many people practice "too much" in lieu of taking it to the course.  I have seen some practice doing multiple videos, seemingly with noted and evident improvement with swings looking very good, yet the scores achieved during actual play had not changed all that much after even a couple of years.  Of course, some are under the direction of professionals or are engaged in a program such as evolver e.t.c. requiring the video sessions, but, at some time, you have to actually "play" and the only thing that matters as an indicator of improvement is the score card. Obviously, I have no way of knowing that is what happened, but only from what I have read in their own posts and I commend them on their dedication to self improvement.

I do not wish to become bogged down with doing videos (although it is fun) but should probably check from time to time to see what is going on.    At this stage, I should not expect to get too much better anyway, but at least I should be able to achieve some consistency and play to the limits of my physical capability. Admittedly, I am also guilty of not playing often as well. I have other priorities, and limited finances so I can only get out maybe 2 or 3 times a month at best.  The little outdoor practice area I built has helped considerably however, especially in short game.

Oh well, I have gone on enough. (I have a tendency to do that, I know)....

The question for you is do you know how to fix it and is what you know correct?  If you know for sure the answer to those things is yes, then the answer to your another video question is yes.  The time between is whatever you feel you need to fix it.

But further, many people practice too much in lieu of taking it to the course?  I think that is probably pretty rare.  Or have you seen otherwise?  Practice a lot, play a lot that is my motto.  I see many many people who will just play and never practice, and they also never get better.

That is my perception based on what they post in a forum. Scores reported months or even year ago compared to scores posted after year or so of practice, do not indicate as much improvement as I would expect. Then again, there are different degrees of improvement, different goals e.t.c.  I am definitely "not" faulting anybody, only observing what I have read about.  Practice can become addictive I suppose and that's not a bad thing either.

Ah OK, makes sense.  I can see that.

relating to excessive:  It may seem that I am always online, but it is also practice. I can read somebodys post or suggestion, then walk 10 yards out my bedroom sliding glass door and "try it".  I get immediate feedback, validation or whatever you want to call it and then back to the computer. Often times in complete darkness. Now that is getting pretty close to being ridiculously obsessive. (or bored).