The robots will probably kill us all within 5 years anyway, so won't have to worry figuring out what videos are real and what are fake, we will all be dead.
It is still relatively easy to figure out what videos are fake and what are real, but every year the fake videos get better and better. The biggest tell are the "lips moving while talking", A.I. still has a tough time with speech and lips. Also A.I. can't duplicate certain facial features with 100 percent accuracy. But yes, as every year goes by, A.I. gets smarter.
But yeah....the robots will kill us all, it'll happen.