Posted: Jul 23, 2015 2:51 pm
by Shrunk
One Youtube commentator provided the likely explanation:

New cameras use CCD chips to capture an image. When you zoom in too much it's no longer using the optical sensor but instead the CCD (digital) zoom. Basically by mobbing your camera slightly (i.e holding it) it's causing the pixels of that chip to capture different colors around her lips making it look like their moving. Try filming it again with a higher quality camera and no zoom and I doubt you'll see any movement.

At which point, the person who filmed the video and everyone else who believed this was a miracle said, "Why, of course. That's so obvious. Why didn't I think of that? That'll teach me to be so gullible."

In my dreams, anyway.