AVIF HDR Test (Unity HDRP Scene template)

• Unity 2021.1b10 / HDRP 11.0.0 / Unity Recorder 2.5.4 (EXR output)
• Convert EXR (scRGB) to PNG (BT.2020/ST.2084)
• $ avifenc src.png -d 10 -y 420 --cicp 9/16/9 --min 0 --max 0 dst.avif