Apple Mac OS X Server v10.6 - Manual (Page 71)

Chapter 9 Advanced Podcast Composer Topics 71
Transitions Â
This folder contains the transition bundles.
To customize Quartz Composer compositions or create new ones, you must install
Quartz Composer on your computer. Quartz Composer is included with the Mac OS X
developer tools.
To customize Quartz Composer compositions:
1 Copy the Quartz Composer composition you want to edit to the relevant folder inside
the following folder:
~/Library/Application Support/Podcast Composer/Resources/Compositions/
2 Rename the Quartz Composer composition.
The name of the Podcast Producer Composition that wraps a Quartz Composition
must end with .pqz.
3 Locate the Info.plist file inside the Quartz Composer composition bundle (Contents/
Info.plist).
4 Open the Info.plist file.
5 Change the value of the CFBundleIdentifier key by replacing the name of the old
Quartz Composer composition with the new name.
The value of this key should match the name of the composition bundle. For
example, if you copy a dual source composition and name it C2.pqz, the value of the
CFBundleIdentifier key should be com.apple.PodcastProducer.composition.dualsource.C2.
You can also change the Threshold key in the Info.plist file for dual source
compositions. This key defines the length of time the video has to stay static before
a transition is triggered.
The default values of the Threshold key are:
Overlay composition: 20 seconds Â
Keynote composition: 15 seconds Â
Overlay with Fade composition: 10 seconds Â
Theater composition: 20 seconds Â
6 Change the values of the localized keys listed in Info.plist.
For example, to change the values of the English strings, open Contents/Resources/
en.lproj/InfoPlist.strings and change the Copyright, Name, and Description strings to
reflect the properties of the new composition.
7 Save Info.plist.