Captain Disillusion, the finest bullshit detector on YouTube, does a nice job explaining how these “dancing phantom cloths” posted by artist Kiyan Forootan seem so real.
Just as with many of his videos, the actual revelation takes only a few seconds. The rest of the video educates you about computer graphics and techniques so you can at least get a sense of how these illusions are created. You won’t be duped next time you see something like it.
As usual, if you’re not supporting Captain Disillusion’s work, you should. He’s one of the best.