There is an updated pull request by ezag against master on the void-packages repository

https://github.com/ezag/void-packages vmaf
https://github.com/void-linux/void-packages/pull/41489

New package: vmaf-2.3.1
### To do: ###

- [x] patch ffmpeg (uses built-in vmaf model)
- [x] split vmaf-devel package

A patch file from https://github.com/void-linux/void-packages/pull/41489.patch is attached