To Preview A Composition Using Manual Preview; Previewing Audio - Adobe AFTER EFFECTS 7.0 Manual

Note: The more detail and precision you want to see, the more RAM is required for RAM Preview. You can control the
amount of detail shown in either the standard or RAM Preview by changing the resolution, magnification, and preview
quality of your composition. You can also limit the number of layers previewed by turning off the video switch for certain
layers, or limit the number of frames previewed by adjusting the composition's work area.
Time Controls panel
See also
"Caches" on page 637
"To set a work area" on page 121
"Audio/Video and Layer switches" on page 167
"About trimming" on page 162

To preview a composition using manual preview

Do any of the following:
•
To go forward one frame, click the Next Frame button
•
To go forward ten frames, Shift-click the Next Frame button.
•
To go backward one frame, click the Previous Frame button
•
To go backward ten frames, Shift-click the Previous Frame button.
•
To go to the beginning of the composition, layer, or footage item, click the First Frame button
•
To go to the end of the composition, layer, or footage, click the Last Frame button
•
To scrub the composition in the Timeline panel, drag the current-time indicator.
•
To go to a specific frame, choose View > Go To Time, or click the current-time display in a Footage, Layer,
Composition, or Timeline panel. Type a new time and click OK.

Previewing audio

When you preview audio, you control the quality and length of the preview. The audio preview preferences you set
do not affect rendering; the quality of audio in rendered video is determined by the output module setting.
While previewing audio, After Effects displays clipping signals that indicate when the audio is clipping. Clipping is
a distortion that occurs when the audio signal exceeds the maximum level that the audio device allows.
After Effects also displays a volume unit (VU) meter that actively displays audio levels during playback. To view the
VU meter and levels controls in more detail, increase the height of the Audio panel.
.
.
ADOBE AFTER EFFECTS 7.0
User Guide
.
.
136