All language subtitles for 07 Tracking Fundamentals

Hello there and welcome

We're going to take her first deep dive into our compositing fundamentals now

And we're going to take a look at track

Are there three main types of tracking that you can do in composite

And those are your 2D track

A 2.5 di track

And your 3D track

So what exactly are the differences between

What's dive into new can take a look at 3

Set up a very basic scene here now

With varying camera motions I've added a little ones distortion so they're moving were actually matches what you would get

It's a right here what we have is what I would call a 2D track order

What characteristics make up a shot that I would define as 2D

Well there are two main things I look for in a 2D track motion

The first

Is there any parallax in the area where I'm trying to add my alarm

Is there any

Rotation that the object is doing

Or is it just staying in

Are typically on a tripod with very little movement or it could be a handheld shot

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That isn't while they swing around I think here is a good example

This is a very 2D track or start this would be difficult to do in fact I was just dive in I've done

Quick

Weight track right here with us so we see it moving

White track all this is doing is moving in X and Y up and down

Import tracks you can add multiple trackers to add translation and scale

Again that's more for zooms

You're not going to get

Parallax out of a 2

Inside just quickly

Applied

This emotion to some text you

Very

It looks like it's six pretty well

What's double check that sticking well by using a stabilise

There we go that's pretty sick

I made with a little bit in the bottom corner because of lens distortion

Just looking at it in context

You can't tell again

Your stabilise is going to reveal

Every possible flower with your tongue

The key thing is to look at in motion and see it

And emotion

You can't tell but there's a slide

I think we can

The next type of track at 1

Is the 3D

Let's take a look at what a three track look like in the sea

So you can see

What moving forward it's like the cameras on a dolly you can really feel the parallax between objects but not

The parallax but they're dimensionality

And what do we mean exactly

Is the relative speed that two separate objects move

Based on the distance between the cam

And this creates the feeling

We'll look back at our example here you can see that are cube on the right side is moving much faster and much more

The nurse Elizabeth

And there

Is

Parallax can occasionally be handled by a 2D track

What are the times and that's because of our second Factor

A map

Is our dimensionality

Dimensionality is kind of like parallax but for one object

It's a relative speeds that different parts of a single object move

Based on the distance from the camera

This creates the feeling an object is more three-dimensional

Rather than a flat 2D plane

If you look at a sphere on the left here you'll see that a front of it is moving much faster than a top at the very side that we can see

And between the front and the side

Those areas are also moving at different speeds and this gives us a lot of information about what type of shape the subject is

Dimensions

3D tracks are also the slowest tractor

And that's because of a couple reasons one is that when your 3D tracking a shot

You're really three tracking everything that's in it you're not tracking one point you're not just trying to get one area crack

Like a 2D track

You need everything to

You may only need one area to stick really well

But everything else that you're tracking in the scene

Has to be pretty

That's one of the main reasons

Excel

So the output of a 3

Will be a cat

What you through your camera

Alright

We have

Text here on a sphere that's not something we would be able to get

Flight tracker

NatWest out a lot

And there's some test cubes scattered throughout this as well to show them any different areas

It's not just

The sphere that sticking

The overalls

And again let's make sure this is actually

Stabilise

I don't want you to get caught up on what these nodes are by the end of the class you're going to

Everything that's

Right now we're just focusing on

Whitewashing

So we stabilise the centre of the sphere and we can see the salt stick in pretty

We won't be going over 3D tracking in this course because

3D tracking really is in

Form on

You can do it in you but honestly it's not the best

Anything beyond something incredibly easy

It's going to snow

And for that reason I'm not going to go out

Let's move on to our final count

Tracking

Which is the 2.5

Now a 2.5 d track

Is a hybrid between the 2D

Make it so

If you look at the shop

It looks like it should be a 3D trick shot we can see both parallax

And dimensionality you can see very clearly the cube moving in freedom

Depending on what element your heading to the shop

You don't have to go all out and get a freak

If you have a flat surface

You can fake dimension Ali

By using a 2.5 di track

Which is also known as a planet

Play this year

And there we go it's a 2.5 di track I'm using a tracker now Dracula going to go over this in next week's class

I'm sure you had a duke

This is

Or

Weight racks combine

And it's adding some dimension

2.5 di tracks are perfectly things like

Monitor burn

People holding phones in there

And Wilder weigh in

Adding a mural to a

Any surface that is flat

Even if there's a 3D movie

The camera

You can generally get away with d

5D

We wouldn't be able to pull off a plane or track on the sphere

It wouldn't end up sticking because really we can only make it stay

The cylinder I think we would also have a hard time getting a 2.5

Detract a stick

Beautiful round

A floor

It's a flat

One of the something to the floor need to do a full 3 track

You can just

2 point

Corner pin

So again what's make sure this is a stick

Correctly

Wise

You can see your prospective changes

What's the camera chop down but I text is sticking

So these are the main 3 types of tracks you'll see

Briefly summarise your 2D track is just for X and Y motion in occasionally zooms

It's the most straightforward

And the fastest

Your 2.5 di track is when you're trying to try

Planar surfaces anything that be put on a flat roof

It's not the fastest technique but also not the slowest

Track is when your shot introduces

Parallax and dimensionality

That needs to be reflected in the element your

When you're looking at a shower

Typically you'll be able to hone in on what type of track it will be without doing anything

Sometimes you might be like that might be a 2D track but it also might be a 2.5 Di

But you can certainly hold in on one or two

The track

And one that happened

I recommend starting with the fastest Ark

You know pretty quickly

If that's going to work or not if you need to escalate it to the next type of tree

So let's practise this now in the few examples and determine what type of track

We would need to use

Alright so we have her first shot here lipstick

Looks like we have a handheld shot standing behind the actor

In this example we were going to say we're going to replace

Iraq on the far right side

Wibsey ACG statue

Analysing this I feel love

QD motion became is not moving forward or backwards really it's staying in relatively the same

I'm not seeing much parallax and I'm not seeing any dimension

So 1009

I'm very comfortable saying we can definitely use a 2D track

To get our element to stick for this

I've been on to the next shop

Alright looks like we're on a tripod here this is much

Smoother

We are tilting

And pain into the left

And what's add some graffiti to those two rocks to the upper right side

Frame

Is there any parallax in the shop

Really I'm not seen a time

Is there any dimensionality in the shop

Well there could be either feeling even though it's saddle and this is just the experience that in those top 2

Rocks a bear

Racine a little shift in their plane

I don't think it's enough to work a full 3D track

I think we can call that one at 2.5 di track and will be able to get agrifeed

Alright looks like we've had round shot here

You can immediately see a tonne of parallax and lots of dimensionality in the foreground rocks

Insulin medially screams out really true

Let's hold on for a sec

It depends what we want to do the shop

If we just wanted to replace the sky

Is really not any dimensionality to it also far away

Is probably a little scaling up that would happen so if we were placed in the sky

It's going to be a 2D

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Or a 2.5 di track

You can do site seems with two deep

We are adding something in the foreground here

It would definitely need to be 3D

I must say you're just adding a very small patch in which then I would say we can do it

5D

Alright let's go through a checklist year it looks like

Are cameras not on a tripod

It's handheld

And it's slightly moving for

And I think that's like move forward is going to give us a lot more trouble than

Because you might look at these monitors that were going to be replaced

We could just do a point

The weather for angle towards camera is introducing a little bit

Saddle dimensionality so I would say for this we would definitely want to do a 2.5 di track

And in fact we will because this is the shot that we're going to be tackling

It looks like this shot or camera is on a Steadicam and we are tracking to the right there's a little bit of rotation

See you there

In the shop what's a head in leaves falling from all of these

Is Armada parallax in the shop

So we will definitely want to grab at 3

Tesco to say

Find pictures to each one of these trees

You could potentially do that as a 2.5 do track

But you would have to do that for each individual tree

So 3 track really makes the most sense

Alright for a final shot we have a slide

Tilt up

Not releasing any dimensionality and here it is kind of hard because there are no objects

In the top

So there might be some slight tension Audi

Really tell

Do I have to keep that in mind

In the shop what's a head in a giant statue in the middle

So I will take this with I don't need to be

PewDiePie

Or

A 3D

Why not a 2.5 Utrecht

Well there's no object that's on the same plane where we want to add or stat

There's nothing that we can really track so I would try a 2D track first and if that doesn't stick

We're going to have to 3D track this to get the dimensional

Because a 2.5 L

Only works if you can track the actual plane that your ad in your eye

Alright that's the end of our example

That sums up

Are compositing fundamentals tracking