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Can I roto a more contrasted image and apply to the original?

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Anthony Sneed
Can I roto a more contrasted image and apply to the original?
on Apr 5, 2020 at 12:32:39 am

I have a slightly difficult to roto image that keeps grabbing onto a lot of background images.

I've found it's much easier to make a duplicate of the image but much more contrasted so that the roto has an easier time latching onto things.

My issue is now that I've roto'd the contrasted image, is there a way to apply it to the original non contrasted image? Or is there some other workaround?


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Greg Gesch
Re: Can I roto a more contrasted image and apply to the original?
on Apr 5, 2020 at 1:07:55 am

Hi Anthony, that's what I frequently do and then simply remove the effects from the copy that I've rotoed and use it.


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Anthony Sneed
Re: Can I roto a more contrasted image and apply to the original?
on Apr 5, 2020 at 1:42:51 am

I guess the problem is this:

If I apply say "Brightness/Contrast" to my image, I need to export it because the roto at the "layer" level doesn't recognize the effect, I need to export it with the effect baked in.

You're saying you do this then reapply the effect but reverse it?


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Greg Gesch
Re: Can I roto a more contrasted image and apply to the original?
on Apr 5, 2020 at 2:37:17 am

Hi. No, just delete the effect(s) from the layer that you have rotoed.


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Anthony Sneed
Re: Can I roto a more contrasted image and apply to the original?
on Apr 5, 2020 at 8:20:12 pm

Ok, so perhaps I'm lost here...

When I apply an effect to a layer and I'm in the layer window, it doesn't show up. It only shows up in the comp window. I feel as if the roto goes straight for the source file and the effects have no bearing on it at the layer level


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Greg Gesch
Re: Can I roto a more contrasted image and apply to the original?
on Apr 5, 2020 at 11:12:40 pm

Hi. Precompose the layer your are going to roto, add the effect(s) in the precomp, go to your main composition and rotobrush the precomposition. When you are finished go into the precomp and delete the effects. In your main comp the precomp is the rotoed copy.


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