ffmpeg -i <input> -c:v libx265 -crf <q> -preset slower -profile:v main422-10 -pix_fmt yuv422p10le -y <output>

ffmpeg -i <input> -c:v libaom-av1 -crf <q> -b:v 0 -pix_fmt yuv422p10le -y <output>

ffmpeg -hide_banner -loglevel info -i <compare> -i <original> -lavfi libvmaf -f null -

• https://en.wikipedia.org/wiki/AV1
• https://trac.ffmpeg.org/wiki/Encode/AV1
• https://www.realnetworks.com/sites/default/files/vmaf_reproducibility_ieee.pdf
• https://ffmpeg.org/ffmpeg-filters.html#libvmaf