Hasta La Motion!

this is my first post on this forum and I hope I’m in the right one for this kind of problem

I have a problematic GS extraction which is driving me mad! The issue is that the brightens of the GS is bleeding into the FG and chewing the edges + shifting the hue of it.

I have tried different approaches to the problem, and each one has no satisfactory results. So I hope you guys will have some suggestion to how I can get around this.

In the zip file attached there are few samples of one of the shots:

– Img 1a is the problematic GS that, defocused, bleed into the edges of the FG

– Img 1b is the keyed version with the BG that originally was supposed to be placed in the shot. As you can see it becomes very evident that doesn’t work. Also in the GS get lost fine hair detail the in motion looks weird.

– Img 1d is used a very strong despill operation that helps a little with the edges but it degrade too much the image for the final grade.

– In Img 1c we came up with the idea of putting a really dirty glass behind the window with some kind of light shining on it. But still the result is not good enough.

– In Img 2b you can see that I have inserted an element reconstructed from another shot where the window is in focus (IMG 2c). The problem (apart tacking ages to roto) is that at the end of the day we still lose a lot of hair detail which is obviously objectionable.

I hope that some of you guys with years of experience have come across a similar problem before and is able to guide me to a solution.

I’m open to every creative tips (don’t know, maybe a spaceship landing and shining colorful lights through the window) 🙂

Thank you in advance for your help.

Cheers