Adobe 12040118 - After Effects Standard Tutorial page 176

Note: When you click the Time Navigator in the Timeline panel, the Info panel shows the times of the beginning and end of the Time Navigator
duration.
To zoom out to show the entire composition duration, press Shift+; (semicolon) with the Composition panel or Timeline panel active. Press
Shift+; again to zoom back in to the duration specified by the Time Navigator.
To zoom out to show the entire composition duration, Shift-double-click the Time Navigator. Shift-double-click it again to zoom back in to the
duration specified by the Time Navigator.
To zoom in to show individual frames in the time ruler, double-click the Time Navigator. Double-click the Time Navigator again to zoom out to
show the entire composition duration.
For additional ways to zoom and scroll in time using the mouse scroll wheel, see
When zoomed in time, press D to center the time graph on the current time.
Choose a viewer to always preview
Designating a viewer as the default panel to preview is especially useful when you have a Composition viewer that represents your final output
and you always want to preview that viewer, even when you're changing settings in other panels.
The panel that's set to always preview appears frontmost for the duration of the preview.
Click the Always Preview This View button
Note: When multiple views are open, previews use the frontmost composition view for 2D compositions and the Active Camera view for 3D
compositions. To turn off the Active Camera, deselect Previews Favor Active Camera in the Preview panel menu.
Preview modes and Viewer Quality preferences
After Effects provides several options for previewing that make various tradeoffs between speed and fidelity.
Preview modes and Fast Previews preferences
Each preview mode provides a different balance between quality and speed for playback and for updating of images during interactions, such as
when you drag a layer in the Composition panel or modifying a property value in the Timeline panel.
Draft 3D and Live Update modes apply to all views of a composition.
Draft 3D Disables lights, shadows, and depth-of-field blur for cameras. To turn Draft 3D mode on or off, click the Draft 3D button
the Timeline panel.
Live Update Updates images in the Composition or Layer panel during interactions. When Live Update is deselected, After Effects displays
wireframe representations during interactions. To turn Live Update mode on or off, click the Live Update button
panel.
To temporarily toggle Live Update mode, hold Alt (Windows) or Option (Mac OS) while dragging to move a layer, modify a property value, or
move the current-time indicator.
Fast Previews (CS5.5, and earlier)
You can use a different Fast Previews mode for each view in the Composition panel. For example, in a 4 Views layout, you could use OpenGL for
the Active Camera view and Wireframe for Left, Right, and Top views. Click the Fast Previews button
to set Fast Previews preferences or choose from the following Fast Previews modes:
Wireframe Represents each layer as a wireframe outline, which increases playback speed and allows you to quickly reposition a layer
with large pixel dimensions or several effects applied.
Adaptive Resolution—OpenGL Off
during interactions. The Adaptive Resolution Limit value in the Fast Previews area in the Previews preferences category specifies the
minimum resolution to use.
OpenGL—Interactive or OpenGL—Always On
playback modes. OpenGL can also be used to speed up rendering to final output. OpenGL features in After Effects rely on OpenGL
features of your video hardware. When OpenGL does not support a feature, it simply creates a preview without using that feature. For
example, if your layers contain shadows and your OpenGL hardware does not support shadows, the preview will not contain shadows.
Select OpenGL-Interactive to use OpenGL only for interactions, such as manually previewing (scrubbing) in the Timeline panel or dragging
a layer in the Composition panel. You can tell that OpenGL is engaging by looking at the Fast Previews icon, which lights up. Select
OpenGL-Always On to use OpenGL for all previews. In this mode, "OpenGL" appears in the upper-left corner of each view in the
Composition panel.
Note: The Enable OpenGL option in the Fast Previews area of the Preview preferences category must be selected for you to use OpenGL for
previews. If you also select Enable Adaptive Resolution With OpenGL, then the preview resolution of layers rendered with OpenGL is decreased
in the lower-left corner of the panel.
Decreases the preview resolution of layers when necessary to maintain speed of updating of images
OpenGL mode provides high-quality previews that require less rendering time than other
Scroll or zoom with the mouse
, at the bottom of the Composition panel
wheel.
To the top
To the top
at the top of
, at the top of the Timeline