Hey there. Yes, the film was shot on a 5DMII, but I the footage is being edited as ProRes422.
I ended up just masking a mask for the beginning of the shot (where he isn’t moving) and then using the roto brush when he starts moving. It worked surprisingly well all of the sudden after literally spending days trying to get the settings to something that worked well.
Here is a screenshot of my settings for anyone with similar issues. Thanks to both of you for your help.
