Apple Cinema Tools 3 - Manual (Page 126)

126 Chapter 6 Preparing the Source Clips for Editing
Deleting a Source Clip File
To eliminate an unwanted source clip before you start editing, drag the clip to the Trash.
Then, if there is a record for that clip in the Cinema Tools database, delete that database
record. Refer to “
Deleting a Database Record ” on page 85 for more information.
The Difference Between Self-Contained and Referencing Clips
There are two basic video and audio file types that you need to be aware of,
especially if you are breaking a clip into smaller ones using QuickTime Pro. Since
video files tend to be large, the type of clip you create can have a large impact on
your hard disk space.
 Self-contained clips: A self-contained clip is complete; you can delete the original
clip and its duplicate will still play on its own. For that reason, self-contained clips
are typically large files. It’s a good idea to save your clips as self-contained if you
intend not to use large portions of the original, and then delete the original once
you have saved the bits you want.
 Referencing clips: A referencing clip is a clip with dependencies on the original clip.
Referencing clips do not contain any actual media content—they only contain
pointers to a specific part of the original clip. The files for these clips are small. If
you delete, move, or rename the original clip, any clips that reference it will no
longer play, since they cannot locate the original.
One way to tell if a clip is self-contained or referencing is to open it in the
Cinema Tools Clip window and click the Info button. The Info dialog displays this
information. Another way to tell is to look at its file size—clips with dependencies
have small (20 kilobyte or so) file sizes while self-contained clips, even short ones, can
have file sizes up to hundreds of megabytes or more.
UP01101.Book Page 126 Thursday, March 10, 2005 3:16 PM