Found a weird trick with eye movement in deepfakes

I was watching a video of a politician giving a speech and something felt off. The face looked perfect but his eyes were blinking in this weird pattern that didn't match his words. So I started watching for eye movement in every video I checked. Turns out, most deepfake software has a hard time making eyes blink naturally. They either blink too fast or pause too long between blinks. For normal people, we blink about 15-20 times a minute but deepfakes mess that up badly. Try pausing a video mid-blink and see if the eyelid shape looks weird or if the blink interrupts mid-word - that's a dead giveaway. Has anyone else noticed this or found other body tells that AI can't fake yet?

3 comments

3 Comments

stellat467d ago

You ever notice how their pupils don't dilate right either? I caught a deepfake of a CEO talking about a product launch and his eyes stayed the same size the whole time even when he was supposed to be excited. Real people's pupils change size when they're interested or in different lighting. Also check if the person blinks with both eyes at the same time. Humans sometimes do that half blink thing where one eye closes a split second after the other but ai almost always makes them blink perfectly together. If you really want to test it, watch their eyebrows during the blink. Real people's eyebrows usually drop a tiny bit when they blink but deepfakes keep them frozen in place.

wendy_henderson216d ago

Great, now I obsessively check my own eyebrows in every mirror.

the_eric6d ago

Never really noticed the pupil thing before but now I'm totally gonna start looking for it.