Static Virtual Production (how to render alpha occlusion?)

I’m doing some static virtual production using HDRP.

How do I render out recordings with alpha?
How do I occlude things like skybox and objects while still retaining there lighting influence?

Thank you!

On your camera, set the background to black

Then when you record, be sure to record to either png or exr, to a tagged camera and tick alpha. Tag your camera anything you like, maybe something like “myRenderCam” or whatever.

You may have issues with AA and your alpha channel however, as seen here: