Thanks for the info wickerman123. I tried the latest 4.22 preview and found the “Get Camera Texture” and “Get Passthrough Camera Image UV” nodes but not the “Transform ARCoordinates 2D”. node.
Thought these might have been in the material editor but they were found in the blueprint scripting section instead. I’ll have to get familiar with compiling the engine like you mention so I can try the latest version. Thanks for the link.