Wertup123, Here is where I have taken a turn on the traditional ways of managing the Ultimatte footage. Here are the four pieces of footage I have, all camera tracked:
Unreal background - Hyperdeck 1 Recording
Matte Output from Ultimatte - Hyperdeck 2 recording
Key footage from Red Camera - Uncompressed on camera media
Program Footage - Unreal background, and Matte and Key from Ultimatte output - Hyperdeck 3 recording
Using this method I have two options.
Option A: Take program footage from Hyperdeck 3 recording and bring that into Resolve as a Rec 709 colorspace. Grade form there.
Option B: Bring the Matte, Unreal Background ( rendered or Hyperdeck 1 recording ), and Red camera uncompressed footage into Resolve and using the timecode on each piece of footage match it all up. Grade the Red camera footage using Red IPP2 workflows. The matte will key the uncompressed footage and it will all lay over the Unreal background.
There is an Option C however I don’t know it yet. I just had my virtual computer arrive today and for the next month I will be learning Unreal. My thoughts after doing some research will be to bring the Key and Matte from the Ultimatte’s into Unreal and grade everything there. Still lots of learning to do in this area and honestly I don’t know what I don’t know.
Hope this helps and was what you are looking for.