While researching more on AV1 encoding. I came across this on reddit to encode a video base off the VMAF score called ab-av1
it Uses ffmpeg, svt-av1 & vmaf together to encode the video.
This could be interesting as it can help people with not as much knowledge like me encode videos in good quality without tinkiering through a lot of settings.
It can be found here. https://github.com/alexheretic/ab-av1