All language subtitles for 09 - Technique for Integrating Light, Color, and Detail When Merging Elements - Basic Keying for Holdout

in this module

we're gonna look at a simple technique

of how you can integrate a foreground image

with a background image without doing much keying

let's get started

so as you can see

I have cleaned up or script again

and I also did quite a bit of tweaks when it comes to

some of the blur operations we did for the skin

you can investigate this later in the project files

I also imported the background

which is a precomp that I made

which has um

this type of Asian temple on it

and it contains some simple animation

some varying lights and transforms in the clouds that I

I did previously

you can also investigate this in the

project script later

at your inconvenience

since this is not really the subject of this course

so I imported a comp up until how it's combined

and this right part here

will be hidden behind her face

so that's why I haven't bothered removing this

and if you take a look at the final clip

that we work on you will

you will see how

how the end result and why I

I didn't bother to do this

so let's apply the focus here

since this is gonna be pretty much the

focused on this close up shot

but the other shot

you can see a lot more of it

but it's is basically the same setup

but it has less the focus

so I think this is probably a good one to do

however when we work with this

we gonna disable it

just so you can see the detail

this same technique I'm gonna show you now

is used in the other shot as well

and you can just look at the

project scripts later to see that

I wanna start by doing some basic keen

just getting like

somewhat rough key

to isolate her

that we later will use to add on top of our background

it doesn't have to be perfect at all

to be used with this technique

it just has to somehow isolate the center here

that we don't wanna affect

so the hair is of course

the main issue in this shot

there's a lot of detailed hair

and keying this

it's pretty challenging

especially in between here

even when the background is light like this

and there's dark

I mean you could luminance key

but it would still be a challenge for sure

there is a much easier way that you can use

and I'm gonna show you that in a minute

first let's isolate

I wanna start by doing

uh luminance key

as I said we're gonna do this very rough

so just isolating her by luminance

since this is pretty dark

you should be able to get something good from that

so this is gonna work pretty well

let's do a really

hard pass here

you can cut away this corner if it's a bit noisy later

let's not crush it too much

let's keep it somewhere like this

and let's see if we have anything in these channels

we can go on

can probably pull uh

let's do um

keep height always

what I do when I do keen is that I I try

I look at the color channels and look at the difference

with the ratios between the different colors

as you can see in the red one

we have a lot more white in her skin

so that might be a good one to isolate her face

however the background is also pretty bright there

so we can't separate the two

so the ear is definitely gonna be a problem

and in the end I think we will end up rotating this ear

the face could just be garbage mat

and keyed in red if needed

but I think my favorite key is key light

and I just wanna try and see what I can get

from working with key light here a bit

so I always in key light

I start at the very top in the settings

and I work my way down

and I like to try and tweak every setting just to see

what results I get because usually it's kinda hard to

to tell before you try it

and screen balance usually gives interesting results

I think this is probably gonna work as um

as a mat for her head

but this hair area we gonna have to cut out

so I'm gonna make like a

like a mat here to only use this key in that side

and tuning it can also

often get some extra detail in there

without destroying anything

I always like to clip the very highs of it

okay so we obviously gonna need a mat here

of course you need to animate this for

for this module and clip

I'm just gonna be working on one frame

and to save time

of course and

then you can take a look in the project script later

you can connect the inmat to Roto

but I don't like using the key light settings

I I prefer keeping like the mergers

it's easier to read when you look from atop

and then blur this for a bit

actually I'm even gonna

like I show you before

I'm a very big fan of filter around

I'm gonna pull this in a bit with the caution one

and then we can merge these together

and now we already have something that looks

pretty cool

and again it's

it's probably not gonna hold up the entire range

so you're gonna have to key frame and double check but

just to keep a rough idea

we're gonna do a garbage one here also

because of the holes here

just to make sure we

we get those

and this will have to be animated as well later

now we got that fixed so

I like to work like this

so I key and I treat my alpha in one

and do then I do all my grade operations

on the RGB here

and to make sure I don't mess anything up

I like to sorry

I like to copy in the alpha

like that and then we just pre molt afterwards

okay so we got our basic here

and I before we

we go on with the rest

I'm just gonna grade this plate

to further match the background a bit

and while I do this

I'm gonna pause for you

and we just resume when it's done

so I've done some grading tweaks to the plate

as you can see

and I pushed her highlights up

and I also made

gave the plate a blue tint

that fits nicely with this background

and I will apply even more blue to this background

to make it work better together

but this was just an initial one

and I boosted the highlights by using the color correct

and the highlight tweaks here

but you have to make sure you set up the Rangers

and you basically drag this

bottom of this curve further towards zero

to make you get a larger range and a more even follow

if you just pull up this

highlights gain with the default settings

it's very likely not much will happen

in the next clip

we will continue integrating the foreground image

into our background image

I'll see you there