OK, here's what clued me in.

1. I noticed that the bottom of the 'craft' looked like there was an overlay and it wasn't a 3-D type of image - the top looked like an object, but the bottom looked like it was behind a piece of cardboard the same color as the background. In fact it might have been a sheet of felt and a piece of felt over a cardboard backing, guaranteeing the background and foreground would match.

2. No stars, nothing in the 'background' at the top to indicate outside. No outlines of trees or buildings or streetlights. So it didn't seem like it was outside. Later you seem to hear outside noises. I think they probably opened a window.

3. The commentary wasn't excited at all. Just some chit chat. A big 'tell'.

4. Upon capture of a still it was clear from the pixellation there was a foreground object (black cardboard) over something.

5. It looks like a small object up close - the detail is sharp in a couple frames. This is not a large image far away.

6. The movement is obviously caused by the camera motion. You can find some landmarks in the background and in addition the perspective of the object never changes.

7. In a real object flying you see it banking or turning or even just changing orientation to the viewer. You'd see a little more of the bottom, or side or top. This image was completely fixed. Thus a stationary model. If you're going to do that at least put it on a string.

8. The camera is almost always centered on the object. In a real video except a hovering craft, the camera loses the image from time to time as the photographer tries to track it. In fact any video you see where the object is centered too much, anticipated, or the camera seems to know before it's seen where it's going to show up it's a good 'tell' (like in playing poker a 'tell' is a revealing aspect).

9. The clicking. Obviously lights turning on or the remote control switch being pushed to turn the lights on in the model.

10. The object never 'flies away'. Most of the time, a real object flying in the sky will leave the area. This one stays in the center view for 9+ minutes. Why stop there? Most vids of real flying craft end with it flying away, though in a better 'fake' they do that too.

HTH. There are other 'tells' but those were the main ones.

As you can see there wasn't just one clue there were ine obvious clues it was a small model filmed up close, ridgedly fixed with a piece of cardboard or felt over the bottom of it. They wanted to exploit the fact that the model had battery powered 'running lights' but obviously if it was a model of the Enterprise or a Klingon ship then that would be uh, too obvious.

If anyone finds the exact model that was used with the mono-headlight on it, please post it here.