@ezra you do realize that #AV1 is a superset of #VP9?
https://wetdry.world/@ezra/114407858544159170
You could add #VP3.2 (#Theora), & #VP8 instead...
#libtheora 1.2 has been released (#Theora / #VideoCodec / #Codec / #Xiph / #libogg / #libvorbis / #On2 / #On2VP3 / #VP3) https://xiph.org/theora/