Aximmetry Virtual Camera has to be able to write to a custom stencil. To enable this:
Go to Edit / Project Settings / Engine / Rendering / Postprocessing
Set Custom Depth-Stencil Pass to Enabled with Stencil
Enable clip planes:
Go to Edit / Engine / Rendering / Lighting
Enable Support global clip plane for Planar Reflections
If you’re using DLSS, the custom stencil won’t work. In that case you need to disable Allow Virtuals in the Cameras panel in Aximmetry.
In addition, it looks like you’re not using the optimal settings for the keyer. If you use the Clean Plate function in Advanced Keyer B, you should be able to leave the High/Low cut close to 0 and 100 respectively.
Finally, with that much movement you should set a higher shutter speed on the camera. Motion blur will never key well.
Did you set up the UE4 scene according to the instructions?
https://aximmetry.com/learn/tutorials/for-aximmetry-de-users/how-to-install-and-work-with-the-unreal-engine-based-de-edition/
If you’re using DLSS, the custom stencil won’t work. In that case you need to disable Allow Virtuals in the Cameras panel in Aximmetry.
In addition, it looks like you’re not using the optimal settings for the keyer. If you use the Clean Plate function in Advanced Keyer B, you should be able to leave the High/Low cut close to 0 and 100 respectively.
Finally, with that much movement you should set a higher shutter speed on the camera. Motion blur will never key well.