Something to consider in the editing fase of a new release:
When smugling the alpha-mask in the black area between the fish-eye Lens Footage, when using a fade-to-black to go from one scene/position to another scene/position, the fade-to-black seems to also impact the alpha-mask turning black, i.e. briefly selecting everything as 'background' / 'Passthrough'.
As a result, during the transistion between scene's the female-talent briefly dissapears from the room, only to spring back into frame at the beginning of the next scene.
Perhaps consider a silhouette/mask to make the fade-to-black only impact the fish-eye Lens Footage?