That ufo YouTube has got to be the *worst* fake I’ve ever seen.
It looks like the photographer put a spoon facing down, with the handle toward the camera, on black felt. Then covered the handle right up to the start of the convex portion of the spoon, with black felt.
A 25 watt light bulb somewhere in the background, toward the left, provided backlighting. The camera, oddly is on a tripod, because the 5-degree or so leftward tilt of the “ufo” never changes even a dot, but the camera swings in and out, back and forth. In and out of focus.
Then after a while, the “ufo” darts out of the picture somehow, and when it re-appears, it has somehow changed appearance. The swinging in and out, and forth, continues. Still at that odd 5-degree tilt.
The “ufo” again is removed from the picture. Then - lo and behold - when it comes back, the appearance has changed again. Incredible!
But it still looks, like a spoon on black felt.
Maybe the ship belonged to the silver surfer... /rimshot