> Companies could make tamper-proof sensor modules that do the signing right where it matters. Just film a screen displaying the fake video. As soon as it's po

> Companies could make tamper-proof sensor modules that do the signing right where it matters. Just film a screen displaying the fake video. As soon as it's possible for a bad actor to create signed fake content it invalidates the entire protocol. Oh, ok, I see what you mean now. The viewer already trusts the creators, so the threat model is not about an attacker creating fake videos. But if you already trust the creator why do you need further proof? Identity is already solved. The problem at stake here is videos released to the general public where the source is unknown, or not trusted by all stakeholders, i.e, during a trial.