AV1 is a collaboration between lots of huge players combining their individual state of the art attempts (Mozilla, Google, Cisco, etc). It's really encouraging, actually.

From what I can tell Opus had development contributed by multiple groups, but significantly less.

We've updated the link from https://aomedia.googlesource.com/aom/+/v1.0.0 to the official page, but we're happy to update it again if someone can suggest better.

Why is it marked as dupe?

I just did that, because it looks like this story had significant discussion recently: https://news.ycombinator.com/item?id=16697415. (And https://news.ycombinator.com/item?id=16796127 also.)

Sorry, I didn't see these comments or I'd have said so sooner!

It's not a dupe. The previous release was a marketing fluff. Now people can actually start encoding video without having to worry about having to do everything over. That is a big deal. The previous announcement was a complete non-event.

Incidentally, Bunny's NeTV2 [1] might be a convenient platform for a hardware accelerated codec.

[1] https://www.crowdsupply.com/alphamax/netv2

Those 2 discussions are about the "release" that was more a beta, than a release. This current discussion is the actual release.