There is a new pull request by absrd against master on the void-packages repository

https://github.com/absrd/void-packages ffmpeg
https://github.com/void-linux/void-packages/pull/41470

update: ffmpeg to 5.1.2 [Draft]
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#### Testing the changes
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A patch file from https://github.com/void-linux/void-packages/pull/41470.patch is attached