All, I have been having difficulty getting libvmaf enabled. I have been getting null results out of older version so I am attempting to rebuild from the latest versions from git. As far as I can tell. pkg-config is recognizing the vmaf package, it is just not validating the version number for libvmaf. Is anyone else seeing this issue? I have tried this both on Mac OS and Windows/MinGW from the latest versions on git. ./configure --enable-libvmaf libvmaf is version3 and --enable-version3 is not specified. If you think configure made a mistake, make sure you are using the latest version from Git. If the latest version fails, report the problem to the ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net. Include the log file "ffbuild/config.log" produced by configure as this will help solve the problem. Thank you, Chris Davis