For Windows, I've used this script to build ffmpeg with vmaf support.<p><a href="https://github.com/m-ab-s/media-autobuild_suite" rel="nofollow">https://github.com/m-ab-s/media-autobuild_suite</a>
This uses libvmaf and vmafossexec which I heard will be deprecated at some later date. I hope the Netflix team doesn't break FFmpeg support when the switchover occurs.