Part of what you think are compression artifacts-- the thin layer of "wrong" pixels-- are actually key to the illusion. That being said, yes there are still some compression issues.
I love how the compression artifacts are acting like a magician's sleight of hand, obscuring the changes to the border of the circle that create the illusion.
> Part of what you think are compression artifacts
I know what are compression artefacts and what is part of the illusion, no need to explain that to me. I just wanted to see the less compressed version.
It's a nice effect and others might find your comment useful, I just wanted to say that there was no reason to address your explanation to me.
Another copy here: https://gfycat.com/enchantedclearcutblackfish