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YouTube moves to AV1 by default to the dismay of some Android users
(www.androidpolice.com)
This is a most excellent place for technology news and articles.
Looks like it might be inferred by this:
https://www.videolan.org/projects/dav1d.html
https://aomedia.org/membership/members/
Founding Members:
It is good that Google is acknowledging that a decoder made by someone else is better than their own by switching to it though.