Ok, to begin with, when taking video with a modern cell phone or the like:Yes! No!
Ok, that out of the way... right now it looks like you are releasing the ball with your hand all the way on top of the ball.
This is an issue I battle all the time, to a lesser extent. I think it's partly due to your late timing at the line, also could be you're just trying to get the ball to hook the way your brain tells you that you should. So we need to stop your arm from turning "in" during your backswing. Think of the wide part of your forearm, down your arm from the crook of your elbow (or your palm if it's easier to visualize), as the club face of a golf club. Would a golf club work well if the face of the club was sideways when it hit the ball? The thing you're doing now, it's not so much that it makes your ball hook "a lot", more just "early".
I also think part of the issue is, your arm turns in when it swings around your right leg/hip in the downswing. If you can bend at the knees a LITTLE more, tilt your shoulders/upper body to the right some and clear your right leg to the left at the line, it will help prevent this.
Pretty much none of us will ever bowl like Tommy Jones, but look how he does it. Upper body is tilted to the right, right leg is way cleared to the left. He is free to bring his arm straight down in the downswing, with the ball very close to his ankle.
You don't need to do what Tommy does (thank goodness) but it's exaggerated in his game and illustrates my point well.
What's that team sport everybody watches on Sunday? Football. Foot-ball. The foot gets to the line, then the ball. Not Ball-foot, not Foot.........ball. Timing in life, and bowling, is pretty much everything.
There are other coaches who will hopefully chime in but at least some stuff to think about.