David, I really can’t tell much from the video due to the distance and angle the video was shot. However, I want you to look at the photo and try and mimic it. Take a video of yourself and see if you are doing everything you can to get as close to what the pitcher is doing in the video. I am also leaving a few suggestions for you to work on.
Look at video of yourself and compare it to the photo and then ask yourself:
Do you get to this position?
Is your stride in line with home plate / front and back heels aligned?
Is your knee bent close to a 90 degree angle at release point with a power follow through of straightening the front knee?
Is your head over your belly button?
Is your release point at least 10-12 inches in front of the front foot?
We call this the Clemens Triangle.
This is the optimal position for maximum velocity, long term health, pitch control, pitch movement, throwing a variety of pitches, and long term health.
Every long-term successful pitcher that threw hard for a long time got to this position.
Good luck and let me know how things are progressing after you have worked on your mechanics.
Former college pitcher and current pitching coach