These are apparently employees of Samsung, dancing on a large field
Another video courtesy of Videosift, this time featuring some wild Koreans. It has 84 votes as of right now, and it'll no doubt keep climbing when it hits #1 on the top 15 list tomorrow. Highlights include everything. For example, they form a foot, and a soccer ball, which gets kicked... it's then animated flying into a net.
The pixels used to create the animation are the dancers themselves. It's an eight minute show. Enjoy the embedded clip.