Original sources are named as such and contain the following profiles:
original_hdr_*.png - BT2020 PQ @ 16bpc (upscaled from original 12bpc P3 PQ sources)
original_sdr_*.png - SRGB @ 8bpc
SDR content was subjectively (manually) tonemapped down into SDR range from the original HDR frames.
HDR avifs were generated with the following command patterns:
avifenc -c aom --speed 0 --jobs 12 --depth 10 --ignore-icc --lossless --cicp 9/16/0 original_hdr_cosmosXXXXX.png hdr_cosmosXXXXX_cicp9-16-0_lossless.avif
avifenc -c aom --speed 0 --jobs 12 --depth 10 --ignore-icc --cicp 9/16/9 --range full --yuv 444 --min 10 --max 10 original_hdr_cosmosXXXXX.png hdr_cosmosXXXXX_cicp9-16-9_yuv444_full_qp10.avif
avifenc -c aom --speed 0 --jobs 12 --depth 10 --ignore-icc --cicp 9/16/9 --range full --yuv 444 --min 20 --max 20 original_hdr_cosmosXXXXX.png hdr_cosmosXXXXX_cicp9-16-9_yuv444_full_qp20.avif
avifenc -c aom --speed 0 --jobs 12 --depth 10 --ignore-icc --cicp 9/16/9 --range full --yuv 444 --min 40 --max 40 original_hdr_cosmosXXXXX.png hdr_cosmosXXXXX_cicp9-16-9_yuv444_full_qp40.avif
avifenc -c aom --speed 0 --jobs 12 --depth 10 --ignore-icc --cicp 9/16/9 --range limited --yuv 420 --min 10 --max 10 original_hdr_cosmosXXXXX.png hdr_cosmosXXXXX_cicp9-16-9_yuv420_limited_qp10.avif
avifenc -c aom --speed 0 --jobs 12 --depth 10 --ignore-icc --cicp 9/16/9 --range limited --yuv 420 --min 20 --max 20 original_hdr_cosmosXXXXX.png hdr_cosmosXXXXX_cicp9-16-9_yuv420_limited_qp20.avif
avifenc -c aom --speed 0 --jobs 12 --depth 10 --ignore-icc --cicp 9/16/9 --range limited --yuv 420 --min 40 --max 40 original_hdr_cosmosXXXXX.png hdr_cosmosXXXXX_cicp9-16-9_yuv420_limited_qp40.avif
Note: The --lossless command here will warn simply because the source material is 16bpc and the destination is 10bpc, but it is otherwise encoded as lossless.
SDR avifs were generated with the following command patterns:
avifenc -c aom --speed 0 --jobs 12 --depth 8 --ignore-icc --lossless --cicp 1/13/0 original_sdr_cosmosXXXXX.png sdr_cosmosXXXXX_cicp1-13-0_lossless.avif
avifenc -c aom --speed 0 --jobs 12 --depth 8 --ignore-icc --cicp 1/13/6 --range full --yuv 444 --min 10 --max 10 original_sdr_cosmosXXXXX.png sdr_cosmosXXXXX_cicp1-13-6_yuv444_full_qp10.avif
avifenc -c aom --speed 0 --jobs 12 --depth 8 --ignore-icc --cicp 1/13/6 --range full --yuv 444 --min 20 --max 20 original_sdr_cosmosXXXXX.png sdr_cosmosXXXXX_cicp1-13-6_yuv444_full_qp20.avif
avifenc -c aom --speed 0 --jobs 12 --depth 8 --ignore-icc --cicp 1/13/6 --range full --yuv 444 --min 40 --max 40 original_sdr_cosmosXXXXX.png sdr_cosmosXXXXX_cicp1-13-6_yuv444_full_qp40.avif
avifenc -c aom --speed 0 --jobs 12 --depth 8 --ignore-icc --cicp 1/13/6 --range limited --yuv 420 --min 10 --max 10 original_sdr_cosmosXXXXX.png sdr_cosmosXXXXX_cicp1-13-6_yuv420_limited_qp10.avif
avifenc -c aom --speed 0 --jobs 12 --depth 8 --ignore-icc --cicp 1/13/6 --range limited --yuv 420 --min 20 --max 20 original_sdr_cosmosXXXXX.png sdr_cosmosXXXXX_cicp1-13-6_yuv420_limited_qp20.avif
avifenc -c aom --speed 0 --jobs 12 --depth 8 --ignore-icc --cicp 1/13/6 --range limited --yuv 420 --min 40 --max 40 original_sdr_cosmosXXXXX.png sdr_cosmosXXXXX_cicp1-13-6_yuv420_limited_qp40.avif
All .avif files should have an adjacent .png with the same basename, which was generated with the following command:
avifdec name_of_file.avif name_of_file.png
It will not contain an ICC profile but should be considered to have the same color profile as the associated AVIF.