Right, but a bug very close to the lens would look to have excessive speed because it's so close it can pass the lens in a fraction of a second, so with no context of distance it can look like something far away passing at otherworldly speeds. I'm not saying it's definitely a bug, just that it's the most likely answer. But I did just post there is a second video now that caught a ball shaped ufo going really fast and it's a little more clear.