What is the Nav Modifier Volume in Unreal Engine 4 .

Source Files: https://github.com/MWadstein/wtf-hdi-files

Can you use an iPhone to track your live-action camera within Unreal Engine? This is a step-by-step experimental guide to getting it to work.  The setup works to some degree, but still needs some tweaking and experimenting to make it viable for production.

Some tutorials that I learned from to make this.

FattyBull's Composure tutorial
https://www.youtube.com/watch?v=vSHu1GlPCqc

Andy Blondin's Composure tutorial
https://www.youtube.com/watch?v=QojUd7Btmng

Unreal Virtual Camera information
https://docs.unrealengine.com/en-US/Engine/Plugins/VirtualCameraPlugin/index.html

Matt Workman's channel
https://www.youtube.com/user/cinematographydb

Possible Android version plugin:
https://www.unrealengine.com/marketplace/en-US/product/virtual-plugin