This is video taken from a moving high-speed train using a really fast camera (Casio Exilim fh20) to capture an amazing view of the outside. At first it looks like nothing is really happening, but watch closely and you’ll see slow movement from various people. The flickering light in the store clued me in to the movement.
There is a lot more info behind this video, so if you want to learn about how it went viral, the method and technology used, the actions, legalities and future iterations, check out the creators post at “Pointless, action-free and totally mesmerising”
It’s like, all 3-D looking in stuff…so…like you said, “mesmerizing”.