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meindnochyesterday at 8:50 AM1 replyview on HN

False, or misleading.

The AV1 spec [1] does not allow RGB color spaces, therefore AV1 cannot preserve RGB animations in a bit-identical fashion.

[1] https://aomediacodec.github.io/av1-spec/av1-spec.pdf


Replies

pornelyesterday at 3:04 PM

AV1 supports YCoCg, which encodes RGB losslessly.

It is a bit-reversible rotation of the RGB cube. It makes the channels look more like luma and chroma that the codec expects.

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