Two key things I see here. Before I start, you have a nice tempo and generate some nice clubhead speed. Nice weight transfer and a very nice follow through and finish.
Pause the video at two spots. 1) Your takeway is the big issue. I tried freezing the video at the time when this is most obvious and put it in this reply, but I couldn't get it to post correctly. But pause just before you begin the takeway and then move it frame by frame from there you'll see what I'm talking about. When you take the club away, you open it up, and I mean it's WIDE open (I used to do the same thing myself). That normally would create a slice (as the face would still be open at impact) but like inthecup said, you've probably learned to over-correct that error and you really force it closed, so much so it's closed at impact (and probably still turning even more shut) which is going to generate a hook spin on the ball.
2) Pause it at the top of your backswing. You have the club pointed way to the right of the target line. They call that 'across-the-line.' One big problem caused by an across-the-line position is a hook. Again though, I think you're getting into that poor position at the top of your backswing due to the way you're taking the club back. Ideally, the shaft should be parallel to the line
You're breaking your wrists, which opens the clubface and is making you take the club back too far inside, leading you to be across-the-line at the top. Next time you're at the range, work on keeping the clubface square to the ball as long as you can on your takeaway. As you rotate normally it will open properly.