Despill as a creative tool; layer mode (Resolve 12)

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Greg Huson

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Despill as a creative tool; layer mode (Resolve 12)

PostThu Aug 06, 2015 6:05 pm

I'm finding the 3d keyer and the despill as a great, fast way way to remove the crappy green color from cheap LEDs that too often end up being 'practicals' in available light shots. However, the despill is unaffected by masks or key level - which makes it hard to 'mix' the effect in - it's all or nothing. Any tips on this? Anyone else seeing this seemingly incorrect behavior?

Also, am I missing something, or is layer mode not working exactly the same in r12 as it did in r11?
GH
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Greg Huson
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georgetsirogiannis

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Re: Despill as a creative tool; layer mode (Resolve 12)

PostTue Apr 18, 2017 5:27 pm

+1 on this! I have a hard time finding how to use Power Windows to limit the Despill effect to an area of my image only.

Any workaround for this?
Website: georgetsirogiannis.com
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Greg Huson

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Re: Despill as a creative tool; layer mode (Resolve 12)

PostMon May 01, 2017 8:04 pm

Never found a way to mask that - could probably do some kind of branching thing to re-introduce a key layer, but haven't played with it in a while.
GH
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Greg Huson
Secret Headquarters, Inc
Post Production / Production
Culver City, CA
323 677 2092
www.SecretHQ.com
www.DigitalServiceStation.com
greg (at) SecretHQ.com
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Lee Gauthier

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Re: Despill as a creative tool; layer mode (Resolve 12)

PostTue May 02, 2017 11:03 pm

Have you tried making a selection and breaking it out as an alpha channel, recombining it post-Despill, then comping back on to the original footage?
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Marc Wielage

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Re: Despill as a creative tool; layer mode (Resolve 12)

PostWed May 03, 2017 6:00 am

Despill affects the entire shot -- inside and outside of the window -- which is the only way to pull green from the shot. Contamination happens all around the key, not just in the key itself.

One possible solution might be to create another manual node that basically does what clean-up does (pulling green and/or turning it magenta to sort of cancel it out).
marc wielage, csi • VP/color & workflow • chroma | hollywood
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Sam Steti

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Re: Despill as a creative tool; layer mode (Resolve 12)

PostWed May 03, 2017 3:08 pm

Hi,

I'm not at all in front of it now and cannot test, but what Lee said must be the best track to follow imho.
I think the best way to find a solution is to do as we would in Fusion, whatever keyer is involved (say UltraKeyer or Primatte) with a matte control node after.
The trick may be to sort of copy what split & combine does, to only affect what you want to, but with another similar track above the main one and/or using composite mode in layer nodes
Legacy MacPro 8core Xeons, 32 Go ram, 2 x gtx 980 ti, 1SSD for system, 2 SSDs raid0 for footage and caches, OSX ElCap and Sierra, Resolve 15 Studio

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