Video tricks are simple and common enough these days that it takes more than "hey looky this weirdz!" to make it noteworthy.

Why is the security camera covering that odd angle anyway. Internal cameras are normally watching the interior of the room not looking through a window.

Also in the middle of a big city there are guaranteed to be further cameras operated by other establishments. You would think the first action would be to ask neighbours to check their surveillance to see if they too had captured the vanishing people.

I say fake.