Looks like what I do, kind of coming down on the ball like you're chopping a log, if that makes sense. Think the transition you have is doing this, because it looks like your upper body gets disjointed from the core and hips. Is your flight a fade and your miss either a pull or a slice?
Full disclosure: This is for information purposes only not advice. I don't have much room to talk!
Edit to add: Don't try this unless you know your swing and this won't mess it up. Try putting a tee down in the ground a foot or so straight in front of your ball. Try to reach down towards the tee through contact. This well help you extend through the ball I think.
I second what Danny said. That is THE stereotypical handsy/casting golf swing. Check out Clay with Top Speed Golf. He will have that fixed in a few weeks.
Your position looks fine at the top, but you look to be starting your downswing with your hands/arms, which is going to force an outside in swing path, and either a cut fade or a dead pull on most swings.
You need to initiate the down swing with your hips, and uncoil from the bottom up.
This will generate more clubhead speed, better sequence your swing to square the clubface, and encourage an inside-out swing path.
Seeing the takeaway would help too. Definitely swinging from the outside though...but not by much. The tempo seems a little off, but overall a very playable swing that a couple minor tweaks will likely substantially improve. Not too bad
yep, you are casting. will be very difficult to retrain yourself to have very soft hands/wrists. probably pushing with your right hand like most amateurs
to add distance you will have to relearn to start the downswing with your weight shift, hip turn while your arms are still going up / shoulders still turning back. left back muscle then rotates/pulls upper body to follow the hips while keeping arms, wrists, and hands loose to drop in the slot then gravity takes over
as noted above, on downswing when left arm is // to the ground the shaft should be as close to vertical as possible. that's how you create lag = club head speed
You gotta get your right shoulder down and drop the club more inside. It looks like your spinning out too quickly and gravity is forcing your arms outside the plane.
Think of your first move from the top as bumping your left hip toward the target, right shoulder down and right elbow into your right hip. Then push off your back foot and rotate.
Some new age instruction is against hip bumping, but to me it all depends on the player and the flaw they're trying to fix.
Good work. I think even if you piped that 350 we'd all chime in about fixing something. I'm guilty of it for sure (the nature of being a coach, or simply being a golfer?). So, I'll lead off, have you had issues with golfer's elbow? It appears there's too much fold in that left elbow on the way down.