Single/Multiplayer, Touch & Vive blueprint only Template

Hello , how can I use Vive Tracker? I have ViveTracker and I want to connect Spectator-Screen to that tracker and use it as a virtual camera. and use my cell phone as real-camera, then I want to merge this 2 videos together, how can I do it?

Also, I have started to test it now, there is some problem with brightness in spectator view, it’s very dark for some reason. Can you please look what is happening with it? Also can you please tell me how to disable rotation from the trackpad on Vive, it’s very distracting my navigation, I want to see and teleport there without rotation, you don’t have this option in your settings as I see?
Thank you.

upd1: How to fix stretching? I have picked SingleEye CroppedToFill, but it seems very stretchy. How about green screen option for the avatar?
Thank you.

upd2: I have found good image to present what I actually looking for:
https://masterofshapes.com/wp-conten…RS_tracker.jpg
basically, vive+tracker+cell phone and walk around person in VR and shoot it and make video in After Effects combining 2 layers (Desktop capture +Cellphone video together)

upd3:
I made it work, I needed to have Vive-Tracker as Virtual Camera, it’s all working okay, only things is a reverse motion from vive-tracker, I going to need to invert it. I don’t know what is the issue with brightness when I created my own texture brightness was fine from the beginning.