Metamorphosis by: Ovid

I have shown several videos of the same area of the night sky, and not only do the "star's" move, but there's never star's in the same place night after night.
That's not even the most curious thing I have noticed.
Ursa Major (The Big Dipper) is not there some nights.
I'm not sure why I'm not seeing anyone else mentioning this fact, but it is a fact, irregardless if anyone else has noticed it.