Understanding compositions after effects

Understanding compositions after effects

Each composition has its own settings for resolution, duration, etc. These are independent of the main project and other compositions. You define these settings when you create a new composition, and you can also change them at any time by selecting Composition > Composition Settings from the main menu (shortcut Crtl/Cmd+K).

For most compositions one of the presets will be suitable but you can customize settings as you like.

Note: See composition duration for a couple of tips on setting the duration.

The Advanced tab includes a few advanced options as pictured below. In most cases you can ignore these.

It is usually best to make the composition settings the same as the footage, e.g. Don't change the frame rate unless you really need to. Fortunately, After Effects provides an easy way to create new compositions from footage using the correct settings. Simply drag the footage from the project panel to the Create New Composition icon as pictured below. Bingo — a new composition with exactly the same settings as the footage.

Note: If you click the Create New Composition icon instead of dragging a file onto it, a new empty composition is created.
The next step of the workflow is to create a composition, in which you will create all animation, layering, and effects. An After Effects composition has both spatial dimensions and a temporal dimension, called a duration, or length in time.

Compositions include one or more layers, arranged in the Composition panel and in the Timeline panel. Any item that you add to a composition—such as a still image, moving-image file, audio file, light layers, camera layers, or even another composition—becomes a new layer. Simple projects may include only one composition, whereas elaborate projects may include several compositions to organize large amounts of footage or intricate effects sequences.

To create a composition, you'll drag the footage items into the Timeline panel, and After Effects will create layers for them. Follow these steps:

In the Project panel, Ctrl-click (Windows) or Command-click (Mac OS) to select the bgwtext composition as well as the DJ, gc_adobe_dj, kaleidoscope_waveforms, and pulsating_radial_waves footage items.
Drag the selected footage items into the Timeline panel. The New Composition from Selection dialog box appears

After Effects bases the size of the new composition on the selected footage. In this example, all of the footage is sized identically, so you can accept the default settings.

Click OK to create the new composition. The footage items appear as layers in the Timeline panel, and After Effects displays the composition, named bgwtext 2, in the Composition panel.
Click in the Timeline panel to make it active, and then press F2 to deselect all layers.
When you add a footage item to a composition, the footage becomes the source for a new layer. A composition can have any number of layers, and you also can include a composition as a layer in another composition, which is called nesting.

About Layers

Layers are the components you use to build a composition. Any item that you add to a composition—such as a still image, moving-image file, audio file, light layers, camera layers, or even another composition—becomes a new layer. Without layers, a composition consists of only an empty frame.

Using layers, you can work with specific footage items in a composition without affecting any other footage. For example, you can move, rotate, and draw masks for one layer without disturbing any other layers in the composition, or you can use the same footage in more than one layer and use it differently in each instance. In general, the layer order in the Timeline panel corresponds to the stacking order in the Composition panel.

This composition contains five footage items and therefore five layers in the Timeline panel. Depending on the order in which the elements were selected when you imported them, your layer stack may differ from the one shown in this example. The layers need to be in a specific order as you add effects and animations, however, so you'll rearrange them now.

Drag bgwtext to the bottom of the layer stack (if it isn't already there). Drag the other four layers 

NOTE

You may need to click a blank area of the Timeline panel or press F2 to deselect layers before you can select an individual layer.

From this point forward in the workflow, you should be thinking about layers, not footage items. You'll change the column title accordingly.

Click the Source Name column title in the Timeline panel to change it to Layer Name, as shown in Figure 6.
Choose File > Save to save your project so far.

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after effects Combining Different Aspect Ratios and FPS

after effects Combining Different Aspect Ratios and FPS

Hi there, I'm new to after effects and I'm looking for tips on how I can seamlessly merge compositions together to make it look as one such as the one shown in many of Andrew Kramers product showcases especially the evolution one here
I believe they are multiple compositions (pre-comps) inside one main comp. Sure Target could have been used to move the camera from comp to comp; and it looks like they either just move past the camera or the opacity is lowered to make them invisible to reveal the composition behind.

1. Dynamic linking PP into AE, then copy and pasting my entire timeline. Problem: the graded footage doesn't show back up in the timeline in PP. Instead, it's contained within the dynamically linked file which has NO transitions, the timing is messed up, etc.

2. Dynamic linking AE into PP, after having copy and pasted my footage from PP. I then paste the footage back into PP, but none of the grading appears. And all my transitions are gone. Plus, when I try to render, the entire picture gets squished. 

3. Selecting each clip and "Replace with after effects composition" works like it should...until either/both programs crash and cause all kinds of dynamically linked issues. Plus, I lose transitions doing it this way and when adding back in the transitions, I get an error "not enough frames, will double frames..." and it never looks right.

My ideal workflow would be to simply finish the edit in PP, move the whole project to AE, and edit each clip, all while retaining the transitions from PP. And then render/export out of AE. 

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Setting Up After Effects for Optimum Performance

Setting Up After Effects for Optimum Performance

After Effects CS5 is a 64-bit application that can take full advantage of large amounts of RAM and multiple processors (CPUs), but setting the appropriate preferences is crucial. In this lesson you'll learn how to configure After Effects to use RAM and CPUs (processors) as appropriate for your computer system, your footage, and your project needs. You'll also see what hardware factors affect performance and what improvements can be made to increase performance.
Interface Overview

After you launched AE, it will be nothing on the window unless you start a new project or open a previous project. To start a new project, go to File>>New>>New Project;
The interface is divided into several areas: 
Project Area: All your footage and stock resource will be placed in the project area; 
Composition Area: The composition area allows you to monitor the result of your manipulation and you can also visually orientate your footage in the composition canvas;
Timeline: Here is where most of your animation work will be done;
Tool Bar

At the top of the interface you will find the tool bar which allows you to activate different tools;
Generally, Selection/Hand/Zoom tools are for navigating through your project; Rotate/Camera/Pan Behind tools are used to move elements around in 2D/3D space; Mask/Pen tools allow you to create assisting elements for your project; Brush/Clone Stamp/Eraser tools are three major pixel manipulation tools; Local/World/View Axis Modes are primarily for 3D composition;

Timeline Control

By default, Timeline Control is located at the very right of the interface; it allows to control playback of previewing. You can set the preview option according to the computational power of your workstation;
Shortcuts

Here is a few frequently used shortcuts in producing animation; it is highly recommended to remember them because it will help you speed up your work flow tremendously;
ALT+ SHIFT + Any Following Keys to display different options in layer;
T - Opacity
A - Anchor Point
S - Scale
P - Position 
R - Rotation
O - Jump to the end of the timeline
HOME - Jump to the beginning of the timeline
SPACE BAR - Play/Preview
CTRL + D - Duplicate Layers
Understanding Composition

Comp = Container

Composition is the key concept of AE; comp(short for composition in AE) is very much like a container. It is the place where you store/arrange all the things such as images, sound, text, and video. Also, each comp has an independent timeline. Moreover, since comp is a container, you actually can take one comp(let's name it comp A) which contains many different things and place it into another comp(comp B); then the comp A become one item just like other items in comp B and you can place it on comp B's timeline and applying effects to it like any other piece of footage; this process is referred as "nesting" in the industry

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