Any "solution" to this that relies on crypto/signing will fail. Propagandists will just make their fake videos and then record them off of a computer monitor an

Any "solution" to this that relies on crypto/signing will fail. Propagandists will just make their fake videos and then record them off of a computer monitor and claim that they're a whistleblower "leaking" the video from an internal system they can't otherwise access. I don't really think reputation has a better chance of solving this either, people are all-too-happy to believe anything that confirms their personal beliefs and ignore whatever contradicts them regardless of source. It's interesting that a lot of the comments here look at how to prove a certain video is real (and assume that people will accept that any video without a certain trait is fake) rather than proving directly that a certain video is fake.