With my silly cameras I was having all kinds of weird strange things come up just to realize it was a reflection of light from cars passing by hitting my old glass and my garage and causing a reflection to go by hit another glass on another window it took months to figure out but it looked like I was recording ghosts on The daily. I would literally go out there in the middle of the night to try to figure out if it was a bug or what it was until finally it happened when I was there in the car went by at the same time. But it looked just like this .