Untitled, I like this video because of the originality of...

I like this video because of the originality of the idea and the excellent execution of the movement. I’m not sure if this was just one take or if it features only 1 or 2 people cut together to make it look like there are hundreds but either way it is a very interesting video. I feel like I could watch this video for hours, it is hypnotic. I couldn’t find any information about the video, who originally made it for or what is was originally intended for.