Yeah, the gif is terrible... the AV1 side is on the left.... https://www.blog.google/products/duo/4-new-google-duo-featur...

Yeah, what I've decided is that they both must be duo and the left is the new codec and the right is the old codec? They really should label that because it looks like "everyone else" vs "Google Duo" and what looks like the Google Duo looks like shit. Assuming that's what's going on.

But even then if both sides are Duo it looks like "we took your Duo and made it ugly"

As far as I can tell, that GIF is showing Duo video quality before and after using a new codec design to improve quality particularly over low-bandwidth connections.