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3.2 Precomposing

In this lesson, you will learn about precomposing (precomp). It’s a powerful technique for using an element or asset multiple times with a ton of flexibility! Learn how to precomp in After Effects in this video.

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1.Introduction
1 lesson, 00:49

1.1
Introduction
00:49

2.Getting Started
5 lessons, 42:55

2.1
What Is After Effects?
09:56

2.2
Main Panels
10:04

2.3
Settings
07:46

2.4
After Effects Tools
08:52

2.5
More AE Tools
06:17

3.Compositions and Layers
3 lessons, 26:35

3.1
After Effects Composition
08:53

3.2
Precomposing
08:10

3.3
After Effects Layer Properties
09:32

4.Keyframes
3 lessons, 25:21

4.1
After Effects Keyframe Basics
06:39

4.2
After Effects Keyframe Easing
10:37

4.3
Spatial Interpolation
08:05

5.Masks, Shape Layers, and Text
5 lessons, 45:36

5.1
Learn How to Mask in After Effects
08:42

5.2
After Effects Shape Layers: Part 1
09:24

5.3
After Effects Shape Layers: Part 2
10:05

5.4
Text in After Effects
07:16

5.5
Text Animation and More
10:09

6.2.5D
2 lessons, 13:42

6.1
What Is 2.5D?
08:37

6.2
More 2.5D
05:05

7.Motion Tracking
4 lessons, 34:04

7.1
Motion Tracking, Camera Tracking, and 3D Text
09:11

7.2
More Motion Tracking
06:15

7.3
Camera Tracking in After Effects
07:35

7.4
3D Text in After Effects
11:03

8.Mattes and Cool Effects
4 lessons, 43:43

8.1
Mattes
10:55

8.2
EFFECTS!
10:50

8.3
MORE EFFECTS!
11:19

8.4
Mind-Blowing Third-Party Effects
10:39

9.Build a Lower Third
2 lessons, 21:35

9.1
How to Make a Lower Third in After Effects
11:01

9.2
Final Touches on the Lower Third
10:34

10.Exporting
1 lesson, 09:11

10.1
Exporting From After Effects
09:11

11.Conclusion
1 lesson, 01:16

11.1
Conclusion
01:16

12.Bonus Lessons
4 lessons, 2:14:00

12.1
How to Make an After Effects Text Animation
29:19

12.2
How to Use After Effects Intro Templates
36:45

12.3
How to Create Handwriting Animation in After Effects
34:01

12.4
How to Create Brush Effects in After Effects
33:55

13.Frequently Asked Questions
8 lessons, 1:34:42

13.1
FAQ Introduction
00:55

13.2
How to Export Video From After Effects
12:26

13.3
How to Export Video From After Effects Using PreRendering
06:44

13.4
How to Mask in After Effects
15:25

13.5
How to Animate Text in After Effects
19:31

13.6
How to Make a GIF in After Effects
13:59

13.7
How to Duplicate Layer in After Effects
20:44

13.8
FAQ Conclusion
04:58


3.2 Precomposing

In this lesson you are going to learn about precomposing, many times in after effects you'll be working on something and you will need to precompose your layers. Maybe it's something as simple as you have a text element that you need to use multiple times and rather than duplicating your text, you can precompose it. Let me show you how it works. So let's say for example, I had a text layer that I wanna use multiple times in a composition or maybe in several compositions. Now, I'll just change this to something a little bit more relevant, something like that. That makes sense. Now, if this were just in this comp and I wanted to use this multiple times, that's no problem. I can just duplicate it, by hitting control D on the keyboard or you come up here to the menu and go to edit, duplicate. What you can see is Control D on the keyboard. So, I can just do that multiple times and I can make lots of duplicates of this text. And I can change each one of this. Like if I wanted to, say scale this one up. Scale this down or rotate any number of these. Even change the color of this different layers, I can. And kinda arrange them in a graphical way, as a design element if you will. But what if I did this and then I wanted to actually change the source of the text? So I didn't want all of these layers to say text, I wanted them to say something else? That can be a little bit annoying because now, I have to select each layer and either grab the type tool and select them and Change it to something else, which can be very tedious. Or with the selection tool, I can just double click on one of this text layers, which will select all the text And I can change them. But again, that can be very tedious. So instead, I'm gonna show you how to precompose this to save yourself a little bit of work. I'm just going to delete all of this And then with this one text layer selected, I'm going to precompose it. So, I'm gonna come up to the menu go to layer, precompose. Get a little dialog box here. And I'm just gonna leave everything right here. You can rename it if you want, but this is fine for now. If you look right down here, you will see this little icon here. This is a composition. So, I've essentially put a composition inside my composition. And the advantage of this is, now I can duplicate this composition Multiple times and if I wanna change the source, all I have to do is going to this one comp right here, this text comp one and just change this. And now, we'll update on all of this other layers. They can see the bounding box is kind of weird on this and it makes it a little bit difficult to select it, so let me show you how to fix that. Wanna jump back over to my text comp here. What I wanna do is, change the comp size so that it's just around my text here. So what I can do is, right down here in a comp panel there's a button called region of interest. And when you use that, it will give you this little crosshair reticule. And you can click and drag A selection area. And then kind of size it so it just fits your text, or just about. And then you can come up to the menu. And choose composition, crop, comp, to region of interest. And now if I jump back to my ten second comp, Things have moved around a little bit. Which is not a big deal. But now when I select these layers, you can see that now this transform handles here with a bounding box for this layer, is much more appropriately sized and in fact, we can get it even better if we zoom up on this. We can select that region of interest again and then draw and even tighter box around the text. Composition, crop to region of interest, perfect. And that won't change much because, we didn't really move the text around. And now, this gives you a nice little precomp here with some text in it, that you can use multiple times and you can resize this, Really big and that will look not super great, unless you turn on this button here which is the continuously rasterize button, or it's also known as the collapse transformation button. But because after effects knows that the thing inside this comp is, essentially a vector graphic, it's text. You can scale it well, almost forever without it ever looking blurry if you have this switch on here, this collapse layer transformation or continuously rasterize button here. You can see without it, it looks kinda janky but with it, it looks super sharp and you can go And you can go crazy with the scale at 17,000 scale. I'm just gonna reset that. Now you have this nice little text precomp, and you can even use the precomp here and you can use it in other comps. So you could go back to the starter comp. And you can take this text comp and bring it out here. And you're saying, no. Well now, it's black on something with wealth doesn't have any background but, no problem. We can come over here to the effects and presets panel. And you can grab an effect called fill. So you just type fill in there, and then you can grab the fill right here. An drag it on to your layer And this will fill all of the opaque pixels, with whatever color that you choose. So, check that out. Now i have this other text layer And I can change the color, and I can use it as many times as I want and put all kinds of effects on it, and it's just a really handy way to use one asset, over and over. And you will see this in after effects templates all of the time. You can create wild effects with text and other layers by using the same element over and over and stacking it and repositioning it and applying effects to those layers. And precomping it, is a really easy way to do that and that way if you ever wanna change the text, to something different You can do that In order to update in all of your compositions, so that's just a really quick look at precomposing. Coming up in the next lesson, you're going to learn about layer properties, so check that up coming up next.

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