Pale Moon forum

Firefox & Chrome implement it.

https://www.ghacks.net/2018/08/03/av1-c ... nd-chrome/

See here:

Issue #87 (UXP)

I'm not opposed to getting this in but someone will have to do the work.

It may be worth mentioning that AV1 in an MP4 container as now been standardized: https://cdn.rawgit.com/AOMediaCodec/av1 ... index.html