Using Three Dimensions; Using Motion Blur; To Change Volume Levels Of An Audio Layer - Adobe AFTER EFFECTS 7.0 Manual

"Time-stretching" on page 231
"About time-remapping" on page 233

Using three dimensions

Use the 3D switch to turn a layer into a 3D layer that you can manipulate in three dimensions. When you select the
3D switch for a layer, you can add camera and light layers to take full advantage of the additional dimension.
See also
"About cameras" on page 180
"About lights and points of interest" on page 183
"About 3D layers" on page 173

Using motion blur

You can use motion blur when you animate a layer—for example, moving a layer of text across the screen. You cannot
add motion blur to motion that already exists within a layer, such as live-action video. If you want to smooth live-
action video where you assigned a frame rate much lower or higher than the original, use frame blending.
Note: Previous versions of After Effects included an effect called Motion Blur. That effect is now named Directional Blur,
to avoid confusion with motion blurring applied to layers.
See also
"About motion blur" on page 214
"To apply motion blur to a layer" on page 215
"To set the shutter angle and phase for motion blur" on page 215
Audio layers

To change volume levels of an audio layer

When you use footage containing audio, the audio level in the footage plays at 0 db, meaning that the level is
unadjusted in After Effects. Setting a positive decibel level increases volume, and setting a negative decibel level
decreases volume.
The VU meter in the Audio panel displays the volume range for the audio as it plays. The red blocks at the top of the
meter represent the limit of what your system can handle.
Adjust the audio level and set level keyframes by dragging the level sliders as you preview an audio layer.
1 Select the layer in the Composition or Timeline panel.
If the Audio panel is not visible, choose Window > Audio. For greater precision in setting levels, drag the resize
2
icon in the lower right corner of the Audio panel to increase its size.
3 In the Audio panel, adjust volume in one of the following ways:
•
To set the level of the left and right channels together, drag the center slider up or down.
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