TRUE. However, answer this. Why does it seem that in both segments, the 'object' is in a fixed position w/regards to the window ? If the 'object' were outside the plane, you would expect it to move some within the perimeter of the window.
Note also that in this video there were two different 'views' of an 'object'. The first one had the look of an artificial source. The second left me clueless.
Both seemed to actually be a gimmick to make money off YOUTUBE VIDEOS.
The image does move relative to the window frame, as it would whether the source were inside the aircraft or outside of it. However, without any reference images such as stars visible, we cannot tell whether the apparent movement is consistent with a source dozens or hundreds of feet away from the camera. The camera’s autofocus system doesn’t seem to be having any trouble with the image, which argues for something relatively close; a distance similar to the the distance to the window frame (i.e. inside the cabin).
But as I said before, the guy puts his hand next to the window so that the image is superimposed on the image of his hand. This wouldn’t be possible for a source inside the aircraft.
I think it is some kind of clearance/marker light on the wing. If you look right at 1:00 or 1:01 there's a blink of the top AC light. It shows the wing briefly and it looks like this light is right on the leading edge.