Ask HN: How can we reliably spot AI-generated videos?

I just took a 10-question quiz featuring a mix of real videos and AI-generated fakes created with Google Veo. The quiz was part of a New York Times piece titled “A.I. Videos Have Never Been Better. Can You Tell What’s Real?”

I’ve always been fascinated by AI video generators and try to keep up with how models like Stable Diffusion work. But this quiz was honestly unsettling. I only got 60% right and often couldn’t tell what was real.

What tools or techniques are available right now to help us reliably distinguish between real and AI-generated videos?