As most people know, it is very hard to replicate zero gravity here on Earth. The only people capable of doing it are either NASA or scientists with a bunch of money.
About half a dozen clever individuals with an office space decided to try their own version of zero gravity with a smaller budget. The going-viral YouTube video shows someone searching for a giant magnet that is used on cranes in scrapyards. Once they bring it in, they also purchase a large box of plastic balls. They install electromagnetic transmitters in the balls so they can control the balls while they are being magnetized.
At first it looks like they are using some video-editing software for the creation of this video, but really, it was just a clever way to use a giant magnet.