Ask HN: Does video processing usually work frame by frame?

I just watched this excellent video about how to use deepfakelab.

https://duckduckgo.com/?t=ffab&q=deepfacelab+tutorial&iax=videos&ia=videos&iai=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DI0p2jLri2h8

I learned it does the deepfake frame by frame as individual images. I thought it was more aware that it was working on a video than that.

Does video processing always work frame by frame like that or does it ever take into consideration that there are prev/next frames.