There is a new pull request by SevereOverfl0w against master on the void-packages repository

https://github.com/SevereOverfl0w/void-packages xsecurelock-video-saver
https://github.com/void-linux/void-packages/pull/17805

xsecurelock: Add mpv/mplayer savers
Add as build dependencies allows the makefile to detect mpv/mplayer
location, and will then include them as optional runtime savers.

A patch file from https://github.com/void-linux/void-packages/pull/17805.patch is attached