That's a good question, maybe!

The way we see it: if today we are used to scan files downloaded from potentially unsafe sources, tomorrow we will get used to scan videos to check their authenticity -- check that they have not been tampered with, changing their conveyed meaning. Arguably, the same will hold for social media and video hosting websites.

While traditional malware are there to infect other piece of software, fake videos targets the human brain. This is more akin to social engineering.