There's a closed pull request on the void-packages repository

melt 6.22.1
https://github.com/void-linux/void-packages/pull/24545

Description:
patches removed, version updated, nothing else. Verified to work with
Kdenlive.

I made the patch because the "crop and transform -> Transform" effect was missing in KdenLive. I've installed `mlt` with xi and then was able to do a transform on a video without any other issues.