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Comment by galaxyLogic | Hacker News Reader

This basically means you can take any politician or citizen and create a video in which they say or do bad (but fake) things. Age of Fake News has truly arrived. Is there some research on how to distinguish fake generated videos from real ones?

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The whole idea of Generative Adversarial Networks is that you're simultaneously training a network that can generate fake things, and another network that can distinguish fake from real. The two networks are each other's adversary, the generator trying to fool the discriminator, and the discriminator trying to catch the generator.

The article explains this very accessibly.

It also explains that the training is basically done when the discriminator has a roughly 50% (random) ability to discern between real and fake.

True. I'm not sure "done" is quite the right word. I think the problem is at that point you no longer have a useful training signal, so you have to stop.

You can simply use the detector network to discard faulty results in a pipeline and it's already useful

You could produce very good photoshop fakes like these for a very long time now. It has had basically no effect on the politics and everyone knows that this technology exists and treats all the pictures they see accordingly (checking their sources etc). It will just be the same with video.

> everyone knows that this technology exists and treats all the pictures they see accordingly

I don't know if everybody knows that. Lot of people believe Hillary ran a child-sex operation and should be locked up. They chant it. Trump has lied 10,000 times and still a lot of people believe him. Surely they would believe a fake video as well, many of them.

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