Unlimited rt – Apple Final Cut Express 4 User Manual
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Chapter 56
Using RT Extreme
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Unlimited RT
Choosing this option tells Final Cut Express to play as many frames as possible when your
effects exceed the processing power of your computer. Final Cut Express does this by
spending time to process some frames in real time while skipping others completely.
Unrestricted real-time playback allows you to play more effects but increases the
likelihood that your sequence will drop frames during playback. This mode is useful for
getting a real-time preview of complex effects compositions. Embedded LiveType
projects can also be played back in this mode.
Red render bars in Safe RT mode become orange in Unlimited RT mode, indicating that
Final Cut Express may drop frames during these segments to achieve real-time
playback.
Note: Segments that can play back without dropping frames still appear with colored
render bars as they would in Safe RT mode.
Unlimited RT mode uses the playback video quality and frame rate options you choose
in the RT pop-up menu or the Playback Control tab. However, this mode overrides the
Play Base Layer Only option and attempts to calculate all applied effects. For more
information, see “
Unlimited RT performance varies greatly depending on the effects in your sequence
and data rate of your media, and the processing power of your system. Some segments
of your sequence may play back without dropping any frames, while other sections
may rarely update the Canvas.
Orange status bars indicate
Unlimited RT playback.