Before you start working with the camera or the 3D come on a track in fact there is a concept that you
need to understand the 3-D camera tracker effect is used to track the movement of the camera that has
been used to shoot the video.
I will show you a few examples where to use the 3-D cabinet tracker era where not to use a stick and
old video that we have already work on the boat over here.
If you skip through you will notice that the camera here is actually very stable maybe is set on a tripod
and you have certain moving elements within the video.
In this case the camera has no motion and using the 3-D camera tracker will be used.
Let's take another example the other if you will DoubleClick in the other view.
You will notice that the camera is moving so the camera has a certain movement.
Of course you guessed that this is a drone flying over a certain area.
So the camera has a lot of movement.
The 3-D camera attack that would study the movement of the camera in this video it's very useful to
use the 3-D come in a tracker because you would be tracking the movement of the camera stick.
Another example also the Virgin this kind of video is very common.
If you skip through you would notice first the elements inside the video itself are moving in not the
airplane is moving is going further turning.
But also the guy holding the camera is moving the camera.
So now he's almost panning or rotating the camera and trying to follow with the airplane as if this
movement somehow in this video camera has a certain movement that you can track.
And also the element or the object over here the airplane can be tracked using track motion.
So depending on what you want to do you can track the motion of the airplane or you can track the motion
of the camera if you have a look at the old house over here in the old house here.
The house is not moving.
Of course it's only the camera that is moving.
It's actually zooming in.
If you had continued with this video you would see that the camera will go outside and start taking
whatever is behind the house.
But they stopped it over here.
Actually yes you can use the truck motion for a portion of the house.
For example this window here you could track the motion here.
But also it would be much better to track the zoom of the camera.
OK.
That would make a lot of sense.
So in concept if in a video the camera is moving on and the camera has such a movement.
You will use the camera or the 3-D camera truck if the camera has no movement at all.
Like in this world it's better to use the track motion in the next lecture.
We start looking at the work flow of the through the camera structure effect.
So you then.