It's certainly Japanese. You can even make out the Hinomaru pretty well in the last cut. But I'm not sure it's a Kate. The canopy looks wrong. And the tail too, actually. It looks a bit more like a Zeke, but I don't think that's right either. It looks too long to be a fighter. Can't really say for sure. Not a Jill. Not a Val. No an Oscar. I don't think it's a Kate. I'm going to guess Zeke. Though it might almost be a Judy.
Thanks for the vid. I can probably use this to make improve the carriers I made for FlightGear Flight Simulator