How to refine an alpha channel of imported pre-keyed footage?

Hi All. I’m using unreal to make virtual productions and movies for myself. My goal is to use it all in real-time (no composure) i’ve not a big budget owner of expensive gears (trackers, mocap suit, and tracking gear for realtime composure of live action footage) The point is that i’m using pre-keyed footage imported straight in 3d environment and all working great, BUT. there is a big lack (for me) of alpha channel refining and management. I’ll love to know if there is a way to blur out the alpha edges of my pre-keyed talents, and make a sort of “light wrap” effects for make the footage blended better in the cg environment?. I’ve recently saw some youtube channel that someone use “aximmetry software with unreal” to archive the perfect chromakey with all the alpha adjustments. How i wish there is a way to make it happens straight in unreal 5 without any external softwares. Thanks for your attention. Fabio

Hi, Fabio.
I’m looking in to the same thing. Did you find a solution to this?
Best regards, Fredrik