How does deepfake technology create realistic fake videos?

Deepfake technology makes fake videos look real by changing one person’s face to look like another person’s face on a video.

Imagine you're playing with puppet faces, those little masks that change expressions when you move them. Deepfake works kind of like that, but for real people in real videos.

Deepfake uses computer power to study many pictures and videos of one person’s face. It learns how their face moves when they smile, frown, or talk. Then it takes another person’s face, maybe from a video, and matches the movements from the first person onto the second.

It's like having a face painter who knows exactly how to make someone look like they’re saying something new, even if they never said it before.

Once the faces are matched, the computer puts them together into a smooth video. The result looks just like the original person is talking, but really, it's the other person’s face doing all the work!

This is why deepfake videos can trick people: they look real because they move and act exactly like the person they're pretending to be.