Adobe AFTER EFFECTS 5.5 Help Manual page 58

Adobe After Effects Help
Using Help | Contents
The viewing frame occupies the center of the frame's pixel area, which is centered in a
larger work area. You can position items outside the frame if, for example, you want a layer
to enter the frame from one side, cross the screen, and leave the frame on the other side.
You can move layers into and out of the frame.
Saving custom preset values
You can save values you set in the Composition Settings dialog box so that you can
reapply them to other compositions. Settings for Width, Height, Pixel Aspect Ratio, and
Frame Rate options are saved with the presets. However, Resolution, Start Timecode,
Duration, and Advanced composition options are not saved.
To save custom preset values:
1 In the Composition Settings dialog box, specify the width, height, pixel aspect ratio,
and frame rate values, and then click the Save button ( ).
2 Type a name for the preset and then click OK.
To reuse custom preset values:
In the Composition Settings dialog box, select the custom name from the Preset pop-up
menu.
To delete a preset:
Select the custom name from the Preset pop-up menu and click the trash icon ( ).
Setting pixel aspect ratio for compositions
Most computer monitors use square pixels, while ITU-R 601 (D1) and DV video use rectan-
gular pixels. The Pixel Aspect Ratio option compensates for the rectangular pixels of D1
video format. Set the pixel aspect ratio that corresponds to your final output format. See
"Setting pixel aspect ratio" on page 47.
If you intend to create a movie for the D1 output format, choose D1 NTSC or D1 PAL. For
more information about D1 format, see "About D1, DV, and various pixel aspect ratio
footage" on page 46.
Note: The correct pixel aspect ratio for D1 NTSC or D1 PAL is chosen automatically when
you choose the corresponding preset item.
Setting frame rate
The composition frame rate determines the number of frames displayed per second.
Frame rate is usually determined by the type of output you produce. NTSC video has a
frame rate of 29.97 frames per second (fps), PAL video has a frame rate of 25 fps, and
motion picture film has a frame rate of 24 fps. Video intended for CD-ROM or the World
Wide Web is often 10 to 15 fps.
Using Help | Contents
| Index
| Index
Building a Composition
Back 58
Back 58