Today, I have finished my demo project.
This is a demo for combine Face and Body from other mocap system to Unreal Engine.
I am using UE4 Version 4.20.
I used iPhoneX to capture and stream data to Unreal Engine. You can read it here: Face AR Sample | Unreal Engine Documentation
The body motion which we captured by Motive (Optitrack System) and using Motion Builder to stream into Unreal Engine.
This is the video link: Face AR tracking and body tracking intergate into Unreal Engine 4 - YouTube
I hope you will like its.