It's certainly LAX. Probably a decent camera.

Google Street View LAX - https://goo.gl/maps/xF89fLJ3Jc8HPyTL8
https://cimg8.ibsrv.net/gimg/pprune....4857ff16b5.png


Frame from video:
https://cimg5.ibsrv.net/gimg/pprune....50a0482749.png
The curved roof buildings may be here.
https://goo.gl/maps/9Wt2NoSioNWH5EYNA

https://cimg5.ibsrv.net/gimg/pprune....e244fed49b.png

That's actually a myth. Telephoto lens does nothing but crop. You can take a wide angle lens, crop it, and you will get exactly the same image (minus the resolution) you would get with a telephoto lens. You can easily try it out yourself.

Besides, you can compare the height of that "person" to Vstab. The person lands behind the buildings far away from the taxying plane, yet it's the same size as the stab? Dead giveaway that it's fake.

Interesting logic ...

Well first why do this above an airport where the chances' to hurt yourself are pretty high, not to mention getting caught, and secondly if it was a true event far more people would have reported it and probably filmed it with their phones I would say ..

Someone landing a jetpack in the middle of LAX in broad daylight, and the only evidence and report of it is a single low quality video shot from outside the fence?

Lol, that's COMPLETELY unrelated. Specially in this case, where clearly there's photo lens being used, and the "guy in jetpack" is not even at the corner for the lens to kick in.

Source: I've been a hobby photographer since forever, including large-frame photography, which has movements to counteract some of the perspective distorsions

Take a picture with one person 6 feet from the camera and one person 12 feet from the camera. The closer person will look twice as big (assuming they're actually the same size).

Now walk away 1000 feet and take another picture. The person 1006 feet away will look (almost) the same size as the person 1012 feet away. That would be true even if you used the same lens for both shots (assuming you could otherwise make that work).

Quite so.

The focal length of the lens has little or no relevance if you simply want to calculate the relative sizes (in real life) of two objects in a photo.

Given that we can be reasonably confident (see post #41) of where the photographer was filming from, we can use the known location (and size) of the CES 777 rolling on 24L in order to approximate the size of the airborne "object" - the only unknown is how far away it is, but it looks to be around 1500-1800 m from the camera.

I'll leave the math/maths for the interested reader, as the saying goes. :O

RC mannekin in jet pack
 

Check out the video in this article. Perhaps this is what is flying near LAX.
LAX jet pack article

Google news article

Latest theory is that it was a human shaped balloon after another one was spotted close up by a police helicopter.

When I started reading this, first thought...."We have been waiting for you, Mr Bond"

Looks like jetpack man (or the balloon?) may be back

https://abc7.com/lax-jetpack-pilot-drone/11991998/