It sounds like you have two different things to deal with.
1. Rotoscoping one or the other from the scene, which I'd guess is easiest to do the guitar.
2. Recoloring the different layers (easiest).
First, duplicate the footage, place the main one below, lock it.
Select top layer (second copy), and begin the roto.
Not sure how long you are talking about but obviously, the longer and more movement, the more difficult it will be. I'd also expect that you'd have to take your time to work around where the hands meet the guitar. I'd either roto the guitar out or just a mask may be sufficient depending on the footage.
If this is a stylized look you are going after, then how meticulous you get (or not) may give you more flexibility. What I mean is, you may be ok with a widened, softened mask to where one color bleeds over to the other a little bit, etc.
Past that, using any number of the colorization tools, you can adjust the color.
Composites are nothing but layers. Don't try and do everything on one layer. Use one layer for the guitar and the other for the person. Then either use the layers as track mattes or make the Guitar one comp and the Person the other and then put both comps in the main comp.
i still feel confused. after rotoscoping, how do I replace the image (the guitar) with a different layer?
Can you explain? I understood you wanted to have the guitar a different color than the person. If you are referring to the other gentleman's comment, I think we agree, separate layers.
If you rotoscope one layer (guitar) place on top of lower layer, you can change color of the guitar layer OR change color of lower layer.
I need to better understand what you mean by replacing a layer.
my apologies, i'll try to be more descript.
I am making a small 1 min video as a promo for a music festival. All of the text is stop motion animation where the background is newspaper and then the letters that I cut out in real time are green but then chroma keyed (in premiere) the letters to be glitter ( close up video of glitter twirling around ). Cut in between those titles, I had this idea that I would have little small 4 seconds of little people playing different instruments (guitar, drums, vocals, bass) where the body of the people would be newspaper and the instruments would be that twirling glitter footage.
I have footage of people playing those four instruments. I am not sure how not only to remove the background in the footage so that i only have the person playing the instrument, but then to isolate the instrument and the person and thennnn have the body be newspaper and the instrument be glitter.
Since i'm going for a stop motion animation style, i'm not looking to be super detailed. more just cute and artsy. But i would hope that at the most you would be able to tell that it's a person playing an instrument.
Does that make sense? Would that be too hard to do?
Thank you so much for your help.
Do you have a still image of what you are trying to do? I'm not quite visualizing what you are going after. My first thought was that you wanted to separate the man from the guitar in order to recolor them. Clearly, you would also want to separate the background, the guy, and the guitar at minimum. Past that, I can't quite see what your intent is. Where do the guys dancing around fit in? Some images would be helpful.
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