Adobe GOLIVE CS2, User Manual, Page: 544 / 724

535 ADOBE GOLIVE CS2
User Guide
Normalize Track/ Set Track Dimension Displays a menu that lists the Normalize Track and Set Track
Dimension commands. If you changed the dimensions of the selected track, you can use Normalize Track to reset
the track to its original size and position. Or, you can use Set Track Dimension to change the track’s original size and
position to the current dimensions and position.
Constrain Proportion
Resizes the video track proportionally. For example, when you edit the value in the width
box, the height is adjusted to maintain the original aspect ratio of the track, and vice versa.
Mode
Specifies how a video track overlays other tracks in the movie:
•
Dither Copy (default mode)
Overlays the image on a track directly below it and applies dithering for a more
refined look. There is no interaction between a track in Dither Copy mode and tracks below it.
• Copy
Same as Dither Copy, with one exception: Copy lacks the dithering capability, which makes it less suitable
for display on systems in 256-color mode. However, the Copy option may provide better performance in low
memory situations.
•
Blend
Makes the track transparent so you can see partially through it to the track below. You can set the degree
and color of the transparency by clicking the color field next to the Mode menu to display the Color palette. Drag a
color from the preview pane of the Color palette to the Mode color field. The lighter the color, the more opaque the
track is; the darker the color, the more transparent it is.
•
Transparent
Lets you define a transparent color for any visual track. Click the color field and drag a color from
the preview pane of the Color palette to the color field.
Note:
The Mode menu is not available for movie tracks, and the Type menu on the Basic tab is only available for movie
tracks.
The next four modes determine how alpha channel content appears. An alpha channel defines how an image is
combined with a background image already present at the location where the image appears. By defining an alpha
channel, you specify which part of a visible image is left out, or masked, to make a background image appear in that
area.
•
Straight alpha
Combines the color components of each pixel with the background pixel at the same location
based on the value contained in the alpha channel.
• Premul white alpha
Supports images created on a white background with a premultiplied alpha channel.
•
Premul black alpha
Supports images created on a black background with a premultiplied alpha channel.
•
Straight alpha blend
Is a combination of straight alpha and blend, so the masked areas are transparent and the
nontransparent areas are translucent. As with the Blend mode, you can use the Color palette to edit the degree of
translucency.
•
Composition (Dither Copy)
Is similar to Copy and Dither Copy, but more appropriate for video tracks created
from animated GIF files.
Note:
The Basic tab in the Color Track Inspector also contains a color field below the Mode menu where you can select
a fill color for the color track.
See also
“About movie tracks” on page 538
“About color tracks” on page 541