I don’t see why freedom of speech would be impacted by this. Existing laws around copyright and libel will need to be applied and litigated on a case by case basis but they should cover the malicious uses. Anything that falls outside of that is just noise and we have plenty of noise already.
Even if we wind up at a point where no one trusts photos or videos is that really a disaster? Blindly trusting a photo or video that someone else, especially some anonymous account, gives you is a terrible way to shape your perception of the world. Ensuring that less people default to trusting random videos may even be good for society. It would force you to think about where the video came from, if it’s corroborated by other reports from various sources and if you’re able to verify the events through other channels available to you. You have to do the same work when evaluating any other claim after all.
Even if we wind up at a point where no one trusts photos or videos is that really a disaster? Blindly trusting a photo or video that someone else, especially some anonymous account, gives you is a terrible way to shape your perception of the world. Ensuring that less people default to trusting random videos may even be good for society. It would force you to think about where the video came from, if it’s corroborated by other reports from various sources and if you’re able to verify the events through other channels available to you. You have to do the same work when evaluating any other claim after all.