Original subtitles

In this video compositing fundamentals and talk about energy

Like I've said before I think to maintain Edge detail as one of the most important skill a composite

Edge detail is about seamlessly blending the edges between two different

It's about having the right amount of sharpness off missed the right amount of colour

You have fine hair is it about

Incredibly important to having

Look really

Emma talking about and she really talking about how are you not elements to

Rescue techniques that are ultimately used for immersion element the first is extraction in the second

Is blending mode

Extraction includes or classic compositing techniques like a rotoscoping and keen and it's really about

Define what sections of a 4 g

We would like to keep elements together

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Isabelle

Using operations math base to combine weights

Placed on a map

This includes placing or multiplying element were using

Reason coloured all of these live in

And oftentimes you'll see these two techniques used to go

And then you'll use extraction over top of

So you only in a specific area

It's very common to see these two years together and it's a good technique to have a new tool set

Let's take a look at both of these

Extraction

Three steps that you need to go

You need to extract the edges so they match the original footage both in detail and she

You need to modify The Edge colour

With the new

5E Edge position and softness to fit with the new background

If necessary

Is a finished

This was a green screen extraction that we've done this is actually the shop we're going to be completed in week 3

Detail about the specific processes but right now I'm just going to show the general steps

In the first step is to extract edges

In detail and in shape

The weather here

I've done that

RL trading

Matches Incredibly Close

Tell us funny

Does a very good job of picking nose out

And we probably extracted on it

This over

Weird noticed it doesn't look that good

And that's because the colour

Other edges

The spring centre step 2

Which is the finer Edge colour to fit within the new bar

The sea the sea

That was sitting here and the edges has gone away and now

I would say this is almost unbelievable shut up and then my phone

As you can see us from hearing

We kept all of the nice Edge detail

Really losing

Any of

You've taken out the green

Smash the lightning everything is working

Very nice

And in this case

Go on to step 3

The Fire Engine

Because

Enough

Let's take a look at another example or we had to modify the edges

Because it just wasn't sitting right with Anna Shaw

The shop

To be quite so loud

Painted in this breath

Take a look about the extraction process

A good alpha channel of this I made sure that it match the original

As closely as

Possible

Ezra compared with the original footage

It may look like you're keeping a little bit too much why

What is a lot of sun

Windows edges that work getting picked up on in our metrics

So as We Stand

Once we measure the silver this doesn't look very good

There's a bright Halo around all these objects

A Dark Halo around

Going to happen this coping and it's one of the challenges of getting your shot

We can download onto our age colour

Which colour hair and it looks much much better

In here

Zebra still matching

The original

But you'll never sit still doesn't work

And why is that because we've matched or footage

Incredibly

Especially these glasses here

Because in this original footage

My back is so bright

Into R&D Focus dead

All the time of break background it's incredibly difficult to recover from without a lot

Intensive work

Search actually look

We have a great example down here

Exactly how defocused this edge would be if it was on a bright background and the

That's what we need to match

Back to work

We can see

This is our short edging here

What's go ahead and

Modifier edges in a way that doesn't match the original but makes the shop

So much water

Is edges

Match the edges of our original foot

You've made them significantly more

That's ok because

That's what would happen

If this was in front of a darker back

It's all about contextual understanding what your pictures should be doing

And extracting elements

Right back especially when they die Focus transmission fluid there was going to exit this problem

Santa

That was very that you couldn't really see it on here

We had a little better her face as well

Position and or softness

Within our lives

What's take a look at blending modes really quick

Going to take the final result and actually use it as our element

And working

Detail into the sky

So what you can do

You can make a meme

What does SATA stand x

So now we

Combined or element

Edges because all this is a straight multiplication

Then what we need to do

Is we need to grab

An extracted man

Implicit of her

Location this is what's going to happen most of the time when using a blender

And now

Return

Detail in the sky and we have

Affected or edges in anyway

This is another great method we need to add subtle texture to details that are very bright

Because otherwise you would have to go through the entire rebuilding process

That we saw

Which is very time

And that

HD

Briefly summarise

Trying to keep the edges

Close to the original footage as possible there extraction

When did no techniques but if the background replacing

Does not make sense within these urges it is ok the butterflies

Xvideo and 13 and actually extracting some edges and also look into a little bit of the theory

So how we should build our key setup

Thank you very much for listening and I'll catch you in the next one