Is anyone else having problems with the match grain node not working properly when have it set to disperse and feeding in an external matte? When I do that I’m getting grain in the matted area and the area outside of the matte is getting pumped up grain. I would assume feeding the matte in would limit the grain to just that area. I could be doing something wrong though…
The entire front input needs to be degrained for it to work, not just the area you want new scattered grain in. The matte only drives where the dispersion happens but the entire frame will be regrained using the original grain outside the matte and the scattered grain inside it.