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Guys and welcome to this new lecture about track camera or 3-D camera tracking or camera attacking anyone



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you want to call it is OK.



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We want to start applying the effect of camera now not as what I said it's an effect.



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It's not like track motion.



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So the method is like this.



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You are pilot attack camera.



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It will analyze the video and then sold the camera then create full use some trackballs all over the



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place according to what its limits is the movement of a 3-D camera that has taken the shot of your video.



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Like we said it's emulating the camera of the video.



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And after that you can attach elements to the track part.



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So this is the method and it's pretty easy and very complicated until you start attaching thing and



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they appear differently.



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We select our leader and we click.



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I can immediately start analyzing in the background you can do other things but the only thing you will



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be doing is just slowing your computer.



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Now not to say it's initialising and that's pretty interesting.



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First it has to initialize and the stand your video and then create the camera.



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Now it took by default the shot type tight fixed angle I would not change that.



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I just open it.



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It has fixed angled volleyballs zoom and you can specify your own angle and then a short trackball and



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the 3D ones.



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So the only really important default that it has taken is fixed angle of you know not as how it is tracking



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it is dragging or analyzing the video if you want you know frame by frame all the frame.



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So if you have a video of two hours is going to take a long time.



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So these are really six seconds on something not so long the time remaining is seven seconds and going



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again frame by frame when Israel finishes its start solving the camera.



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And then after finishing from solving the camera it will give us the track.



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Let's wait and see.



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Now it has finished initializing and solving the camera and give us if we click on the fact you will



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see the track point I'm on not only see the track points these small axes zooming in fact this video



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zooms in this small access.



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Here are the top points and there are very many.



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Now I want you to notice something important here.



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First of all on this side there are very few or none.



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Crackpots are going to change that.



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The most important thing to go to advanced and the of method is auto detect you can change this if I



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choose option sort of the camera.



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Immediately you have typical Most if not scene and tripod and tripod time meaning there is painting



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and the scene is a movie and thats the best for tracking camera.



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You want to figure out if the camera is panning left right up or down whatever.



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And if its fixed on the tripod and without having much of the zoom.



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So you use a tripod but also another important aspect is the average.



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You see the average Yellowhead is zero point forty five pixels and that means the error here between



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finding the right position for this blackpoint is 0.5 pixels have a pixel almost.



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And this is growing with you is coming to five six.



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It means you know the tracking is totally bad.



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Don't use the tracking gear is going to move all around the place.



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Actually I really find that above No.



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2 with very bad videos maybe one something good and they have the detail and so on this is very nice



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but not extremely useful.



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This is what you want to focus on the average error.



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Good.



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Now what we have not is it did not create any camera waiting for me to create the camera here or what



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I can do is to come to a plan.



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I will explain that later on Right-Click and say create a text and comment on or create solid and camera.



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So Also it will create something here.



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Sorry not all or a shadow if you want with the camera or I can come and create the camera here.



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Let's click and create the camera immediately and very fast a camera has been created because it already



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analyzed everything.



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If I press you and get the keyframes notice I have the position and orientation only if you go back



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to our effect we notice that we use a fixed angle view.



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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



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it will solve again.



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Here it is solving the camera again but it's not initializing just solving the camera and it will stop



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there.



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Its up to me to either the camera or not.



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You can have two or three cameras by using this model changing for the variable zoom but it will be



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totally useless.



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Of course you know you can use only one camera or the Active Camera or if you like the 3D tracker camera.



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Cool.



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I'm waiting for it to solve it has finished.



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I can come and create and you come into I don't do that that is somehow useless because you can choose



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only one camera and I have two of them.



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It's becoming you know confusing.



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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.



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Let's read the first comment because we want zoom and you will see the effect of the zoom is very good.



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But I really don't want to use the zoom here.



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Let's zoom out on the movie.



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Click on our and not you have very many points that I could use without the zoom.



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This post did not appear.



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Now don't take it as a general rule that the valuable zone will give me better track points.



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That's not true.



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It depends a lot on the video you are tracking.



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Now let's go to the beginning to the end in fact and look at these dark plumes are very big.



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What they can do is to reduce their size.



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Of course you want to reduce their size according to where your timeline indicator is.



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You know depending on the position of the video if I come to the beginning I can't see them anymore.



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Let's go in the middle here.



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And also you have this circle that is appearing this circle as you can see it is determining the plan



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in which you are going to create a solid like we said or text or not which we will see in the next election.



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Thanks for listening and then the next action what you are going to do is to create some solids and



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replace the windows here.



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I see you in the next election.