Get a vid like this next time you press something heavy too.
But I did see what I think I saw from the other angle.
I watched the video quite a few times and if you look at the bar path, it is going around your head.
So the bar is under the chin, comes up and then out to miss your jaw then it clears the head and travel above the scapula. The shift around the head is the reason why you have that sticking point, imo, because that was also my sitcking point. In fact, it still is, but if I'm able to press the weight to the point where I can get the weight over top of my scapula the rep is a done deal.
Also at the top of the movement you've got thoracic flexion and lumbar extension, which is not very powerful in terms of the lockout, and can also give you some pain/discomfort after a very heavy press.
What you should be doing arching your upper back a bit before the press, in order to miss your chin with the bar, and then as the weight clears your head you straighten up your torso and bring your scapula under the bar. The only thing moving around really is your thoracic spine. The bar path of that will be almost completely vertical.
Thoracic extensions will help with the upper back if you need more mobility after this tweak. But at least you're pressing over your head and not off at an angle in front of your forward, like most people, lol.
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