Need help identifying this retro pixel effect

Hi everyone,

I'm trying to identify the name of this visual effect/style. It has a retro pixelated, old video game / low-resolution look.

Does this effect have a specific name? Also, how would you recreate it? Is it mainly done in software like After Effects, or does it require specific plugins, shaders, or AI tools?

I'm referring to the pixelated retro effect used throughout this video.

Thanks in advance!