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[Autogenerated] in this clip,
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we're gonna learn about creating new channels as well as a new layer.
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Layers are a collection of channels.
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Remember when I talked about RGB A.
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That's like a box and it's a layer.
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It's a box of channels,
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and within those channels are the pixels that creator images.
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So if we think of each layer as that container or that box
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that contains at least those three channels,
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RGB plus whatever extra there is, there could be Alfa depth,
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um, motion channels, vector channels, etcetera,
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etcetera, if you can think about that.
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In that way,
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a layer is another collection of channels that are embedded in the same image.
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Now let's take a look.
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The shuffle This shuffle has the ability to create a new layer,
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so let's hook it up to this beauty pass.
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This beauty passes just a helicopter rendered over black,
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and it's very different than the final composite.
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What we're gonna do is we're gonna move this out of RGB,
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so let's bring up our shuffle net.
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Currently, it is in putting RGB and let's say alphas rgb a.
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So it is bringing in rgb a in its sending it out to rgb a red green blue Alfa.
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But what we don't want to do is we don't want to send it to the same
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place because it's just basically overriding it.
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We're going to create a new layer.
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What we're gonna do is we're gonna come down here and we're going to select new.
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This brings up our new layer dialogue.
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Now there's two important things that have to be
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filled out in the new layer dialogue.
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Firstly, the name we have to give it a name.
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So in this case, we're gonna call it R b A au to you I beauty layer right.
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And now we need to assign it channels.
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Now we can create our own channels.
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Weaken, say are g be.
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You can see Nukus trying to fill in someone's that it already has.
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It's a lot easier to use the auto button over here.
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By doing this,
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it's gonna automatically fill in the four most common channels Red,
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green, blue Alfa and we're going to select.
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Okay, now you can see that instead of it saying rgb right here.
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It now says beauty layer and the beauty layers consisted of red,
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green, blue Alfa and we've checked those off.
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Now I'm gonna close this and now when I look at the shuffle,
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I can see that Well, now there's RGB rgb,
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a Alfa and beauty layer.
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Now the beauty layer is just simply a copy of what we already created.
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But you can see if I go back to the original image and view
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that because we're looking at beauty, layer and beauty,
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Layer doesn't exist until the shuffle created it.
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It displays nothing if I go back to RGB because that's where the BT layer is.
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It is in the RGB on that note.
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Now the beauty is now both in what the original RGB waas as
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well as what was created out of the shuffle,
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which is called Beauty Layer.
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Let's go back to our shuffle.
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If we go into our beauty layer and we edit it,
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we can see a created red green blue dot alfa prefixed,
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the name of the layer with the name of the channel.
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Let's create a new channel one that doesn't exist yet.
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We're gonna call this one food one click.
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OK,
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now my additional channel did not appear and that is because this
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top area only contains those four primaries.
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Now let's go ahead and go down to this other area
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where we can create a new channel.
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So I'm gonna go down here and I'm going to see new and I'm gonna call
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this food and we have to give it something down here.
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So food a So now there is a fool layer as well.
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So now we have our G b A and a new one called Food Now
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foods going out to the beauty layer.
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And what is food?
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While we're gonna copy the Alfa Channel into their we can
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also go ahead and weaken select rgb A.
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And we can say that food dot is the Red Channel We hit close.
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Let's take a look.
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We now have our beauty layer and we can go in and we can look at our r g b.
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There's our Alfa.
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But what is our food?
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Well,
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there's food and we can look at it and you can see it is now the Red Channel.
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Excellent.
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Let's go back to RGB A.
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The exact same thing can happen in shuffle copy.
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We can create new layers.
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We can create new channels and we can create layers with new channels.
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What this allows us to do is it allows us to rearrange and
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mix channels and layers throughout nuke.
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And the real power of nuke is the ability to recall these
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channels and layers later in our composite.
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How storing them in earlier operations and being able to recall
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them within in line inside of the composite gives you farm or
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efficiency than normal procedures.
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Nuke was made to be one of the fastest composite ER's out there.
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The way it handles channels in the way it handles layers within those
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channels is by far one of the most efficient ways of handling large
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volumes of pixel data to create great, compelling imagery.
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So in the next module,
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we're going to talk about channel operations and channel math,
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Useful methodologies for using the copy node as well as the channel merge
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