For me, I just install windows 10, then windows update, install potplayer -> oculus rift -> DMMVRplayer, that's all.
I think the codec would install with VR players like Dplay (Adult festa VR)
I am not sure, hope it can help
I had buy some vr movies from DMM18.
But the DMM VR player can't play normally, "The program stop working" something like that...
I am using oculus rift, how can I fix it??