That is a big issue of using video. I talked to Bustos about this subject this weekend. As she stated internet hitting coaches like to use video to look at someone's swing. Example was her 2004 posted swing. What was the count? Where was the pitch location? Where are the runners? Did the batter bait the pitcher? What did the coach tell the hitter to do or place the ball? Without those answers you cannot look at a video and know what is going on. Like she stated , the hitter may not swing like they teach, because the situation during the game dictates what the batter must place the ball .