Guys and welcome to this new lecture about track camera or 3-D camera tracking or camera attacking anyone
you want to call it is OK.
We want to start applying the effect of camera now not as what I said it's an effect.
It's not like track motion.
So the method is like this.
You are pilot attack camera.
It will analyze the video and then sold the camera then create full use some trackballs all over the
place according to what its limits is the movement of a 3-D camera that has taken the shot of your video.
Like we said it's emulating the camera of the video.
And after that you can attach elements to the track part.
So this is the method and it's pretty easy and very complicated until you start attaching thing and
they appear differently.
We select our leader and we click.
I can immediately start analyzing in the background you can do other things but the only thing you will
be doing is just slowing your computer.
Now not to say it's initialising and that's pretty interesting.
First it has to initialize and the stand your video and then create the camera.
Now it took by default the shot type tight fixed angle I would not change that.
I just open it.
It has fixed angled volleyballs zoom and you can specify your own angle and then a short trackball and
the 3D ones.
So the only really important default that it has taken is fixed angle of you know not as how it is tracking
it is dragging or analyzing the video if you want you know frame by frame all the frame.
So if you have a video of two hours is going to take a long time.
So these are really six seconds on something not so long the time remaining is seven seconds and going
again frame by frame when Israel finishes its start solving the camera.
And then after finishing from solving the camera it will give us the track.
Let's wait and see.
Now it has finished initializing and solving the camera and give us if we click on the fact you will
see the track point I'm on not only see the track points these small axes zooming in fact this video
zooms in this small access.
Here are the top points and there are very many.
Now I want you to notice something important here.
First of all on this side there are very few or none.
Crackpots are going to change that.
The most important thing to go to advanced and the of method is auto detect you can change this if I
choose option sort of the camera.
Immediately you have typical Most if not scene and tripod and tripod time meaning there is painting
and the scene is a movie and thats the best for tracking camera.
You want to figure out if the camera is panning left right up or down whatever.
And if its fixed on the tripod and without having much of the zoom.
So you use a tripod but also another important aspect is the average.
You see the average Yellowhead is zero point forty five pixels and that means the error here between
finding the right position for this blackpoint is 0.5 pixels have a pixel almost.
And this is growing with you is coming to five six.
It means you know the tracking is totally bad.
Don't use the tracking gear is going to move all around the place.
Actually I really find that above No.
2 with very bad videos maybe one something good and they have the detail and so on this is very nice
but not extremely useful.
This is what you want to focus on the average error.
Good.
Now what we have not is it did not create any camera waiting for me to create the camera here or what
I can do is to come to a plan.
I will explain that later on Right-Click and say create a text and comment on or create solid and camera.
So Also it will create something here.
Sorry not all or a shadow if you want with the camera or I can come and create the camera here.
Let's click and create the camera immediately and very fast a camera has been created because it already
analyzed everything.
If I press you and get the keyframes notice I have the position and orientation only if you go back
to our effect we notice that we use a fixed angle view.
Now if I want to use the zoom what I will do is to go back and see variable zoom as soon as I click
it will solve again.
Here it is solving the camera again but it's not initializing just solving the camera and it will stop
there.
Its up to me to either the camera or not.
You can have two or three cameras by using this model changing for the variable zoom but it will be
totally useless.
Of course you know you can use only one camera or the Active Camera or if you like the 3D tracker camera.
Cool.
I'm waiting for it to solve it has finished.
I can come and create and you come into I don't do that that is somehow useless because you can choose
only one camera and I have two of them.
It's becoming you know confusing.
But what I want to show is when I press you I have the zoom here which I didn't have in the first camera.
Let's read the first comment because we want zoom and you will see the effect of the zoom is very good.
But I really don't want to use the zoom here.
Let's zoom out on the movie.
Click on our and not you have very many points that I could use without the zoom.
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Now don't take it as a general rule that the valuable zone will give me better track points.
That's not true.
It depends a lot on the video you are tracking.
Now let's go to the beginning to the end in fact and look at these dark plumes are very big.
What they can do is to reduce their size.
Of course you want to reduce their size according to where your timeline indicator is.
You know depending on the position of the video if I come to the beginning I can't see them anymore.
Let's go in the middle here.
And also you have this circle that is appearing this circle as you can see it is determining the plan
in which you are going to create a solid like we said or text or not which we will see in the next election.
Thanks for listening and then the next action what you are going to do is to create some solids and
replace the windows here.
I see you in the next election.