I’ve been party to many debates on this one – CGeye-brows (like what I did there?) or are these kids just phenomenal? The balloon scratching is what makes it for me, I think I might even like it better than the Gorilla and definitely more than the airport race. Good skills Fallon.
Definitely computer trickery. It’s quite well done, but when it cuts to the medium close up of the boy, his head sort of ripples in an unnatural way, moving independently of the lower face. Also, when they start to go mental right before the balloon scratching, that’s not physically possible without some sort of brain melt.
My guess is they had the kids raise their eyebrows various times in different combinations from each of the different angles, and then painted them on hundreds of times.
There might be a little computer work there, but the real trick is that they filmed it slower, and then sped it up in editing.
If it was entirely CGI, the kids wouldn’t keep pursing their lips, and they way their heads keep moving up and down over the course of the video makes it very difficult to splice together with computers.