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Themes offer a mechanism for generating video content programmatically. From the user's
perspective, there may be little difference between using a theme clip and normal video
clips. Both types of clips appear in the main visual track along with
Transitions and can have
Effects
applied to them. But themes
offer additional properties that can be changed to alter the way they display.
Like other modules, theme modules are used to
generate the actual theme
media
items that users drag from the
Browser into the
Timeline.
Each property can either be made editable or predefined, allowing many theme
media items to be generated from a single theme module. This is particularly
helpful with text themes since predefined phrases can be supplied to users
rather than allowing them to type arbitrary text.
Core theme modules include
Title, which displays colored
text in a custom typeface, and
Gradientmap which generates textured backgrounds
(well suited for bump mapping with the
Displace effect module).
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