ufos every where right this minute

Lots of things are invisible to the naked eye when you're standing at street level looking up at the top of a skyscraper, unless you have an optical zoom like this camera has. This particular cluster is also coming through the glare of the sun which is only just eclipsed by the building, so the IR filter is picking up reflected sunlight off what looks to me like a lot of bugs, which you wouldn't be able to see without the filter because of the glare.

You could probably see that any sunny day by looking through a pair of binoculars while wearing sunglasses.

I have no doubt that there are UFOs flying around, but I don't believe there are any on that video.

Still a good find though, keep 'em coming.