At some point it might make video evidence inadmissible. I imagine a tool like Reality Defender offers could be used in court to tackle this, but now Reality Defender itself needs verification. Like all tools used to verify evidence I suppose. Is a negative from Reality Defender enough to prove that a video is real, or is it only valid proof when it's proving it's fake?

It's not about verification, it's about reasonable doubt.

Right, but verification is the opposite direction of doubt. It's not that verification is a boolean true or false for the evidence, it just helps remove doubt. For example, CCTV footage verified to be pulled from a service station by the police is less easy to doubt CCTV footage provided by a friend of the accused. Adding a verification paper trail to that makes it even harder to doubt. DNA test results provided by the defendant are worth nothing unless they're verified by a paper trail that's trusted.

So back to Reality Defender, why shouldn't we doubt Reality Defenders positive or negative results? There would need to be a period of verification and testing that "proves" within a reasonable margin that it works.

Great comments - Better results require more data, improving models, and onboarding new (different) models. All areas of focus for us!