Hi Guys welcome to this news section about motion tracking this will be quite interesting and I know
you're looking forward to learn motion tracking and to make some fancy things for your videos and that
will be quite cool by the way.
After Effects allows you to track objects in motion meaning moving objects such as this boat you're
seeing here.
This is a boat that is in motion so it's an object that is in motion.
We want to track it inside the video.
And after we track it we'll get a track that is in motion but if you'd like to say so and then attach
other layers or other compositions and even effects to that motion track that we have created.
Now this is very useful and gives you a very nice effect and I'm sure you have seen very many of them
on TV.
We are going to do it very easy here.
We are going to create a track that's the first thing we want to create.
Then from there on we will understand how to manipulate the track when it goes wrong.
And then we start attaching text and peak arms and stories like this to the truck.
Now how they get started with a motion tracking.
If you come to an emission here after you choose your lead you can see you can track the camera I will
see that track a Mocca I will have a special course about Mocca.
And that is the stabilizer of the earth.
That's an effect.
And we have track motion and not as there is truck umask and track is certain property fine.
So now we are only interested in truck motion.
Our can click on the track motion and the tracker panel will appear.
Also you can come to a window and call up the tracker panel and that will appear also as they can then
put that up so we can open it to the maximum.
First of all let's look at this panel.
It's a very interesting panel.
Its name is tracker right.
Fact what you can do here you have four main options but two have them here only affects camera and
Wopat stabilizer just effects if I enable this one by clicking on it you know this is starting to work
something and is just in effect you can enable it and disable it.
I will delete it.
OK.
What sterilizer is the same is an effect and you start analyzing in the background analyzing your video
so you can put it on and off.
OK.
So we have seen this or that that affects will study them in this section.
What we want to focus on now is track motion.
So our click on track motion.
It's created a current track called tracker 1.
This is a track like a motion path.
OK.
And the motion source is the video itself.
Could the track type is transform.
This is the default but also you can have stabilize a corner and perspective can happen in this world
we are going to work on all of them except of course.
So sometimes that transformed is Appian and you will get through this get it back to transform.
Now we can track position rotation and scale.
And also we can have a target so that the tracking is done.
We can attach a target here as you can see there is no targets yet.
We cannot lead.
We can effect with point control and that's pretty interesting.
It's cancelable.
Let's have a closer look at the track point.
I was just in.
So you're not is that all of this is the track point.
It has the big square which is the search region that's the search region outside.
This is where it's going to search to find the small square where to place the small square which is
the feature region and within the feature region it will put a feature center that will be keyframe
now called feature center.
Now this small cross here is not the center.
It is the attach point.
It is to this point you are going to attach other layers effects or whatever you want that it may be
tacks or so.
So after effect we'll look in the big square which is the search region.
So it's going to search around here all over to determine where to position the small square which is
the feature region and within the feature region it's going to create a keyframe and this will be the
feature Center and the small Gosset is not the center.
This is the attach point.
This is the point on which you will attach other layers and other effects or whatever you want.
You can move the attach point anywhere you want it will not affect how the track is working and you
can move it later on also and you can give it some offset to attach other layers.
So let's zoom out again.
And we go to our man here.
So we want to move our truck both to the region.
We want to track but make sure that the area you want to track has a high contrast with the other objects
around for example the man here has high contrast with the boat which is white and that the sea behind
it and everything else.
If you try to track it here you are going to have quite some problems because it will move around.
There is no contest so let's put it over the guy which determines a good contrast.
And you see there is a magnifier that will show you the pictures you are going to track exactly.
So I will leave it there.
I will drop by zoom in a press underneath and zoom in and not just know what's going to happen.
Let's look at the season if you want to move this.
Just click on one border and you can move it.
Of course it cannot overlap over the feature region.
That is the small square.
You can just use the points and the German key I wanted to search here and make maybe this the feature
region a bit smaller call or call here and move it.
So we wanted to look in this area to determine the feature region and then give us a feature center
and we will have our attach point in the middle of the feature center and we can attach our laughs.
Now how do I start tracking.
Let's go back to 100 percent and zoom a bit more.
Now when I started tracking I want this blackpoint to be always on the men behind.
If it goes away it goes very far.
It means the tracking has been corrupted.
I need to redo it or to just start tracking all I have to do is to come to analyze for what I can also
backward.
If I come backwards in time and in this way but of course it's better to start analyzing or forward.
I would click and it will start analyzing and creating our interest points.
And that is what's going to happen when it gets to that point the boat is gone.
The man is gone.
But this point is lost.
It cannot cross to this side.
So there's quite some work to do to eliminate this.
You know how it got lost.
So why are we here.
Let's go to the layer and open the layer.
You notice we have motion tracker.
That's a group of properties all together.
It's not under effect.
But I will open up a bit or a trail down and I have a tracker tracker is my track point.
You're not just eyeballing one track point here and then within that track don't have the feature center
the confidence and attach point.
The confidence is how much confidence aftereffects has in tracking this point.
Now also I have a ton of keyframes Let's make this bit smaller.
Yes I have a ton of keyframes that are some of them I'll talk to these.
Let's go back to the timeline to go back where the man was.
It's here.
This is where it started losing tracks.
Let's zoom in even more than that and roll the mouse.
You notice all these keyframes are totally useless.
Let's go back a bit.
So this is OK.
This is ok I guess over here if we zoom in I will find out the keyframe that is totally you know getting
lost or over here for example fat I would select all these keyframes till the end and just delete them
so when I delete them what's happening exactly there is nothing happening.
Look not is that some keyframes have been jumping.
Come on.
Just them go backward a bit.
Call and then I can come and I just this keyframe here.
And the other one if I like to that's good.
Let's go to the last keyframe come back OK.
So that's the last keyframe maybe the one before the press.
J.
No it's OK.
We go to the last one and then I move in time and then the man now is showing.
I will hold the track point.
Click on it and just move it above the new area that I want.
Actually it's not the new area but the continuation not as there is a motion Parthiv.
Then I would zoom out come back here and say track again.
So now it's continue tracking.
I pressed bespatter stop and back and nothing is what's going to happen at the end of the movie.
Now if I continue analyzing you know the guy is going but it's still giving me so many keyframes that
are totally useless.
I will go back.
So from here the guys disappear OK fine.
I will come to my timeline here.
Let's zoom out a bit and I'll take all this keyframes.
I don't need them.
I would just delete them and maybe the last one or so I will delete.
No that's OK.
Now I want the point to come out but I cannot drugget you know if hand-luggage it doesn't come out at
all.
So I'll move a bit in time let's say over here and instead of you know moving it I'm going to use the
feature center here to move it or press you to see only the keyframes and have the features that I can
just move it in value and not something interesting when you move the feature center the attach point
is also moving.
OK and that makes a lot of sense.
But if you move the attach point the fissure center doesn't move.
And also it makes a lot of sense.
You might want to attach it you know over here so you remove the attach point over here and the featured
center will not be moving.
I will undo that and I will move it to the outside.
So now I have quite a motion here it comes it comes back fine let's zoom out and see exactly what we
have achieved.
If you play now you see that let's zoom out and go to the beginning of the player.
You'll notice that very nicely the track board is going over the man that is moving.
And then it jumps over here.
Cool.
And then it comes out.
That's very beautiful.
Now what are we going to do with all these keyframes And how are we going to use them.
This is what we will be covering in the next lecture and attaching some text or some other composition
or whatever you want to.
The attach point as you then.