Apple Final Cut Pro 5 - Manual (Page 1276)

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Using Built-in Generated Clips
Final Cut Pro can generate several types of clips for you
to use in your sequences, including bars and tone,
placeholders, and backgrounds.
This chapter covers the following:
 What Is a Generator Clip? (p. 489)
 Different Ways to Use Generators in Your Sequence (p. 490)
 Graphical Video and Audio Generators Available in Final Cut Pro (p. 491)
 Creating and Adding Generated Clips to Sequences (p. 493)
Note: For details about creating titles using text generators, see Chapter 22, “ Creating
Titles ,” on page 495.
What Is a Generator Clip?
Generators behave the same as other clips, but their content is actually generated
internally in Final Cut Pro. Therefore, generators never reference media files on the
scratch disk, so they can never be offline as can clips that reference media. Because
generators are generated by Final Cut Pro, their aspect ratio, dimensions, resolution,
and codec are determined by the sequence they are edited into (unlike video and
audio clips in which these characteristics are based on the media files they reference).
Note: Generators are actually coded in the Final Cut Pro FXScript language, so you can
modify or create your own generators using the FXScript language. For more
information about FXScript, see the Apple Developer website.