Wow, this does look pretty strange. My first question is why do you think someone would set up a “live security feed” to take a picture of the sun? Do they think someone is going to steal it? :)
But seriously, have you any idea where the location is? If the sun really did change size that radically for three minutes, do you think nobody else in the world would have noticed? Both these things suggest to me that it must be some problem with the camera. The black dot is probably a deliberate mask to prevent the direct rays of the sun from damaging the film (or videotape or whatever).
Well first off it’s a beach cam hehe. This location is on the coast of Washington, try to ignore the black dot and notice what else is happening. You can literally see the reflection blinking/flashing on the water. I’m not sure if anyone else can see it, yesterday was my second day actually recording this, today will be my third. my guess would be only certain types of cameras can see these events as they happen. I’m not sure if the human eye can see this but then again i’m not even sure what it is, all i know is that if it was a camera glitch, then why is there a reflection of the event in every video. Going to be recording a third sunset from this camera.