Original subtitles

[Autogenerated] in this clip,

we're gonna learn about creating new channels as well as a new layer.

Layers are a collection of channels.

Remember when I talked about RGB A.

That's like a box and it's a layer.

It's a box of channels,

and within those channels are the pixels that creator images.

So if we think of each layer as that container or that box

that contains at least those three channels,

RGB plus whatever extra there is, there could be Alfa depth,

um, motion channels, vector channels, etcetera,

etcetera, if you can think about that.

In that way,

a layer is another collection of channels that are embedded in the same image.

Now let's take a look.

The shuffle This shuffle has the ability to create a new layer,

so let's hook it up to this beauty pass.

This beauty passes just a helicopter rendered over black,

and it's very different than the final composite.

What we're gonna do is we're gonna move this out of RGB,

so let's bring up our shuffle net.

Currently, it is in putting RGB and let's say alphas rgb a.

So it is bringing in rgb a in its sending it out to rgb a red green blue Alfa.

But what we don't want to do is we don't want to send it to the same

place because it's just basically overriding it.

We're going to create a new layer.

What we're gonna do is we're gonna come down here and we're going to select new.

This brings up our new layer dialogue.

Now there's two important things that have to be

filled out in the new layer dialogue.

Firstly, the name we have to give it a name.

So in this case, we're gonna call it R b A au to you I beauty layer right.

And now we need to assign it channels.

Now we can create our own channels.

Weaken, say are g be.

You can see Nukus trying to fill in someone's that it already has.

It's a lot easier to use the auto button over here.

By doing this,

it's gonna automatically fill in the four most common channels Red,

green, blue Alfa and we're going to select.

Okay, now you can see that instead of it saying rgb right here.

It now says beauty layer and the beauty layers consisted of red,

green, blue Alfa and we've checked those off.

Now I'm gonna close this and now when I look at the shuffle,

I can see that Well, now there's RGB rgb,

a Alfa and beauty layer.

Now the beauty layer is just simply a copy of what we already created.

But you can see if I go back to the original image and view

that because we're looking at beauty, layer and beauty,

Layer doesn't exist until the shuffle created it.

It displays nothing if I go back to RGB because that's where the BT layer is.

It is in the RGB on that note.

Now the beauty is now both in what the original RGB waas as

well as what was created out of the shuffle,

which is called Beauty Layer.

Let's go back to our shuffle.

If we go into our beauty layer and we edit it,

we can see a created red green blue dot alfa prefixed,

the name of the layer with the name of the channel.

Let's create a new channel one that doesn't exist yet.

We're gonna call this one food one click.

OK,

now my additional channel did not appear and that is because this

top area only contains those four primaries.

Now let's go ahead and go down to this other area

where we can create a new channel.

So I'm gonna go down here and I'm going to see new and I'm gonna call

this food and we have to give it something down here.

So food a So now there is a fool layer as well.

So now we have our G b A and a new one called Food Now

foods going out to the beauty layer.

And what is food?

While we're gonna copy the Alfa Channel into their we can

also go ahead and weaken select rgb A.

And we can say that food dot is the Red Channel We hit close.

Let's take a look.

We now have our beauty layer and we can go in and we can look at our r g b.

There's our Alfa.

But what is our food?

Well,

there's food and we can look at it and you can see it is now the Red Channel.

Excellent.

Let's go back to RGB A.

The exact same thing can happen in shuffle copy.

We can create new layers.

We can create new channels and we can create layers with new channels.

What this allows us to do is it allows us to rearrange and

mix channels and layers throughout nuke.

And the real power of nuke is the ability to recall these

channels and layers later in our composite.

How storing them in earlier operations and being able to recall

them within in line inside of the composite gives you farm or

efficiency than normal procedures.

Nuke was made to be one of the fastest composite ER's out there.

The way it handles channels in the way it handles layers within those

channels is by far one of the most efficient ways of handling large

volumes of pixel data to create great, compelling imagery.

So in the next module,

we're going to talk about channel operations and channel math,

Useful methodologies for using the copy node as well as the channel merge