Yup! Definitely that one. Showtoolsai has a video explaining the tells on it.

Here's the instagram link, he hasn't put it up on YouTube yet: https://www.instagram.com/reel/DVJ7hHvD63Q/

That's her face from 10-15 years ago. She has aged.

Image analysis. When a video is modified it is often pretty simple to tell if there are inconsistencies from an image captured under real world conditions using a camera lense.

It's pretty simple to trick the human eye these days. But it's significantly more difficult to modify a real world videos and perform "in-painting" (the more general term for a face swap) without obvious inconsistencies appearing.

It's significantly easier to detect these inconsistencies than it is to perform in-painting that doesn't have these inconsistencies.

It's not 100% deterministic. But it is enough to conclude that it is more likely than not a digitally modified image/video.

Video is MUCH easier to conclude as fake or real too. Because, unlike an image, the in-painting needs to not only work consistently to real world conditions and match the surroundings throughout, but it also has to match seemlessly and naturally to every single frame one after another.

The specific techniques are usually dependent on the video. But sometimes something as simple as increasing the contrast on an image can really expose that the pixels of an in-painted portion are not behaving how the surrounding pixels are.

If you're interested I found a journal paper that goes over it. Haven't read it myself. But will likely after this comment. But just looking at the images in it can give you an idea of what the image analysis would be looking at.

https://www.mdpi.com/2313-433X/10/2/42

Edit: I know nothing about the Maxwell video in question. This is just an answer on "how" people can determine if a video or image has been modified.

Here's one showtoolsai posted on instagram, its not up on his YouTube yet but he does this for a living and is a great resource for learning AI red flags.

https://www.instagram.com/reel/DVJ7hHvD63Q/