Ps4 Controller + Unity + Cardboard + Android

Hello,

I would like to create first person shooter game using Unity 5 and Google cardboard for android platform, and now I have a problem, becouse i don’t now how to map my Gamepad with Unity. I’m using PS4 controller (Dualshock 4), and when I try to map it just like in tutorials it’s doesn’t work. For example i’m trying to do this just like in this movie PS4 Controller Mapping For Unity - YouTube . Could someone say my step by step how to do this?

https://play.google.com/store/apps/details?id=com.nicesprite.unity Is about as far as i’ve gotten at this point