Unreal calibration without iris

Hello I just want to project unreal video on my architecture model but i don’t have iris or camera.
So , my question is can i calibration ndisplay unreal scene and project that on my real model without iris?
If i can would you tell me how??
I found relevant topic on answer hub but it’s erased


Yes, there is a way and it’s called 3DCal. Have a look at this tutorial:

Also, you probably meant this topic.