The default DE for Antergos is Gnome, smplayer is not a Gnome application. I don’t think installing smplayer after the fact is that difficult to do. Besides, believe it or not some of us like and use Totem!!
Here is a good solution, Get rid of that crappy Windows 10 and if you must have Windows for some reason or another then use 7!!
Totem, aka Gnome videos. I use Gnome DE and I like my stuff consistent. Totem has been great lately!!! all video files I’ve thrown at it play from .wmv to .mkv
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