That comment about lip sync being too perfect changed how I check videos

Someone pointed out that in real speech people's lips are slightly out of sync with audio like 5-10% of the time, so if every single lip movement matches perfectly it's probably fake. Now I watch for that tiny delay on purpose and caught a deepfake ad from a major brand last week have any of you tried looking for oversync instead of just the usual artifacts?

3 comments

3 Comments

val_shah16d ago

walker.julia I started doing the same thing after that post and it actually works. The fakes have perfect timing but real people mess up their lip sync all the time, usually by a tiny bit near the end of a sentence. Saw a car ad last month that looked flawless until I focused on the lips then it was obvious.

ramirez.vera15d ago

Same trick exposed a politician's ad for me last week. Creepy how good they're getting.

walker.julia16d ago

Wait, so I should be looking for BADLY synced audio to know if something is real? That's backwards and honestly kind of funny that we've trained ourselves to spot fakes by looking for imperfections.

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