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Hello and welcome to the 

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third video in our tutorial series

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for After Effects. 

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As we said in the previous video, 

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we're going to go through the layers

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in our timeline here. 

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And a couple of the features 

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along the timeline 

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to help you navigate this space 

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and understand how to organize and layer

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your assets or footage. 

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So in the main window here

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we have our first shot 

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and I'm going to name this 

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so that we can understand 

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what we're doing 

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and we can right click and hit rename. 

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I can click on it 

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and hit Enter on our keyboard. 

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And I'm also going to put 

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a second shot in our timeline 

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by clicking, dragging,

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putting it underneath our layer. 

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And then I'll just rename this 

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so we know what we're working with. 

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So on the left hand side here.

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We have these eye tools,

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and what these do is they 

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make our layers visible or invisible.

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So if I uncheck the top guitar layer,

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we'll see that now 

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is completely disappeared 

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and we see the layer underneath this, 

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which is the drone. 

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Cannot turn this back on. 

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Next to this is our audio, 

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this is to turn the audio 

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on off from that shot. 

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I'm going to turn these off 

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so they are silenced. 

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This circle next to the audio tool,

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allows you to solo the layers. 

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So this hides all of the other layers

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that are not solo'd. 

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So if I just wanted to see my drone shot,

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I could either click the arrow 

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on the guitar to get rid of that 

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or I could solo the drone layer.

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Now this helps when 

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there are a lot of layers 

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in your composition 

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and you just want to see one of them. 

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As a quick example 

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I'll just duplicate our drone layer

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multiple times by hitting control and D.

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So I just want to see 

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this second to bottom layer here. 

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And there we go. 

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Nice and easy; 

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delete these layers, 

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so it's nice and organized for us. 

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Next, we have a padlock 

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and that allows us to lock that layer.

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So now if we was to click 

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this, you'll see it will flash 

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and were unable to do anything to it. 

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Over here, we have our 

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hide layers in timeline, 

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and what this will essentially do 

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is if we check this 

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and then we click the hide 

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layers top here, 

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it will hide all the layers 

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that we've told it to hide.

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Next to this, 

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we have collapsed transformations 

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for vector layer. 

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This is for bringing the vector graphics 

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in from Illustrator or Photoshop. 

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Quality and sampling and effects, 

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which will turn off all effects 

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if there are any applied again 

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and allows for faster rendering 

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we then have frame blending, motion blur

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,adjustment layers and 3D layers 

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we'll go into these 

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in more detail later on 

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and I'll also mention 

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parenting and linking layers 

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in future tutorials as well.

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So down here, then 

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we can simply rearrange 

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all of our assets 

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as we see fit by clicking

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and dragging them up or down.

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So now, the drone is the top 

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layer and guitar 

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at the bottom, or again 

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we can put the guitar on top, 

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so that is visible. 

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In this section, 

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we can also essentially cut our layers

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in various different ways. 

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first of all, if we go 

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to the start of the shot, 

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we can click and drag,

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which means now we go 

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from our drone shots 

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and our guitar shot starts 

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at just about three seconds 

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where we've dragged it to there. OK?

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You see this Green Line here? 

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This is essentially the cache on our RAM.

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So this part of the composition

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or sequence is stored in RAM room 

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for quick RAM preview and playback.

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Once again, we can click 

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and drag our top shot, 

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so it's only about three seconds long

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like so, ensuring that the arrows

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are either end and clicking 

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and dragging to change its length. 

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There are also some 

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other ways to do this, and what we can do 

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is click on the layer 

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that we want to use. 

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And if I want to cut this 

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drone shot one second in, 

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I can press alt open bracket

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and it will cut that shot there. 

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The same to the side 

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if I want to cut the shot 

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to around eight seconds. 

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I use alt close bracket.

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It will cut it there for me. 

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So now, as you'll see, we've 

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got nothing in the first 

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second of our composition. 

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Everything starts at one second 

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and it ends at eight 

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seconds it goes to black.

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So what we can do here, this 

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black is not a black layer 

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or black solid or anything like that. 

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It's actually transparent 

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and the way for us to see this. 

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If you remember from our previous video 

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is to toggle the transparency grid. 

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So now we can see 

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everything is actually transparent 

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after and before our shots start.

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We can zoom in on our timeline

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by clicking and dragging 

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this blue icon at the top

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of our timeline. 

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Or a shortcut for this is to click

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ALT on your keyboard 

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and then use the scroll wheel 

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on your mouse to zoom in and out as so.

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I want to trim this composition now, 

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so that it starts 

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when our drone shot starts and ends

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when our drone shot ends. 

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So there's no transparency either side 

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and the way that I can do this

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by draggging this work area start tool

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just here, the little blue button 

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I can click and drag 

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and then I can hold shift. 

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So it snaps to the start

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of my first layer.

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And again, I can do the same at the end. 

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Just like so holding shift,

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and remember from our first video

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we could go to composition 

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and composition settings 

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and change the timings here, 

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but it's much easier to do it 

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on your timeline once 

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everything's in place. 

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So once I have the full 

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composition selected, 

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where there's no transparency either 

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side within our work area here.

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I can right click and hit trim

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comp to work area 

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and now you'll see 

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our composition has gone from ten seconds 

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long to eight seconds long. 

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And there's no transparency either side. 

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So it's nice and 

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organized, nice and neat, 

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and it's just using the assets 

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and the timings that we require.

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In the next video 

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will go through the transform tools 

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and look at simple keyframing.