I am trying to rotoscope a character from one shot into another. They are both the same shot, except for one thing. First I had him sit on a bench and got a good take. Second, I didn't move the camera and time lapsed from there, without the actor in the shot. (No way he would have sat on the bench for 5 hours) At first I thought it would be a simple mask, but things got complicated. The edges of his clothes sometimes fade from one frame to the next, and I can't for the life of me find a tutorial on rotoscoping loose strands of hair. His hair changes by very small amounts every frame, whether it be a tiny bit of color, or certain ends go missing.
I have tried refining the edges, but it doesn't work with hair well. It's a medium/closeup, so it's very noticable. Do I have to mask it? I could upload the clip if it helps.
I'm not super familiar with After Effects. I can use it, but I'm not an expert by a long shot. So I'm asking for you to explain it in a pretty detailed way. I figure this isn't easy, but not insane either. Thanks for any help in advance.