From the course: VFX Keying: Master Course
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Ultimatte: Overall workflow - Nuke Tutorial
From the course: VFX Keying: Master Course
Ultimatte: Overall workflow
- [Narrator] Okay, the CP input, that's your clean plate. GM, that's the garbage matte. And hidden over here is HM, which is your holdout matte. So how do we use the garbage matte? Well, looking at the original blue screen, we can see that blue screen doesn't cover some portions of the background. So we make a garbage matte that covers that part of the screen that we want to clean up. And then we hook that into the GM or garbage matte input of Ultimatte and voila, get a nice clean plate. The holdout matte here, let's see how that's used, let me move this up here to reveal that, okay. Let's take a look at the alpha channel of this gal here. And we can see that her shawl is extremely transparent. So let's say that we needed to do a holdout matte to seal that in. So we would draw the holdout matte with the Roto node, and then hook it up to the HM, holdout matte input of Ultimatte and boom. A nice solid matte. Of course, you're going to have to roto that for the whole shot, but…
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Contents
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About the Keyer Tutorials appendix1m 11s
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KEYLIGHT: Setting up a basic composite10m 12s
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KEYLIGHT: Masking, fine-tuning, and spill suppression9m 22s
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KEYLIGHT: Viewing status and multipass keying7m 50s
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Primatte: Basic keying and spill suppression9m 31s
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Primatte: Matte refinement and edge detail7m 31s
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Primatte: Auto-Compute and advanced spill suppression8m 14s
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Primatte: New features in Primatte V5m 55s
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IBK keyer: Keying and compositing25m 39s
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Ultimatte: Basic setup3m 24s
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Ultimatte: Overall workflow5m 19s
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Ultimatte: Matte tools and shadows4m 16s
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Ultimatte: Spill suppression4m 11s
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