MarsSeed [1] filed a deletion request for smplayer-qt4 [2]: Orphan Qt4 variant of repo smplayer. Last updated 17 months ago. Last user comment is from 2019. I recommend deletion.
[1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/smplayer-qt4/
