What AV1 encoders support lossless mode?

[PCU]

What AV1 encoders support lossless mode?

[Jamaika]

You can use libavif / libheif / libwebp2 for AV1 photos.

heifenc.exe image_21447_24bit.png -v -L -q 100 --avif --no-alpha -p chroma=444 -p speed=5 --matrix_coefficients=0 --full_range_flag=1 -o image_21447_24bit.avif
heifenc.exe image_21447_32bit.png -v -L -q 100 --avif -p chroma=444 -p speed=5 --matrix_coefficients=0 --full_range_flag=1 --enable-two-colr-boxes -o image_21447_32bit.avif
heifenc.exe image_21447_48bit.png -v -L -q 100 --avif -b 12 --no-alpha -p chroma=444 -p speed=5 --matrix_coefficients=0 --full_range_flag=1 -o image_21447_36bit.avif

avifenc.exe -c aom -l -d 8 -y 444 -r full -s 5 -j 4 image_21447_24bit.png image_21447_24bita.avif

av1enc.exe -q 100 -444 -size 1563x1558 -effort 5 -thread 4 image_21447_24bit.png -d image_21447_24bitw.av1

av1enc.exe -avif -q 100 -444 -size 1563x1558 -effort 5 -thread 4 image_21447_24bit.png -d image_21447_24bitw.avif
av1enc.exe -avif -q 100 -alpha_q 100 -444 -size 1563x1558 -effort 5 -thread 4 image_21447_32bit.png -d image_21447_32bitw.avif
av1enc.exe -avif -q 100 -444 -size 1563x1558 -effort 5 -thread 4 image_21447_48bit.png -d image_21447_36bitw.avif

[PCU]

For video encoding.

[birdie]

For video encoding.

libaom -crf 0