Apple Final Cut Pro 6 - Manual (Page 1416)

Chapter 28 Using RT Extreme 631
IV
The following two patterns are available when your sequence has a frame rate of 24 fps
and you choose a 25 fps external video output.
 24@25 Pulldown: In this pattern, frames 12 and 24 are pulled down for a duration of
three fields instead of two, creating a subtle stutter each half second. For 25 fps
output, this pattern has the best perceived motion quality.
 24@25 Repeat: This pattern simply repeats every 24th frame once to fit 24 fps footage
into 25 fps. This causes a noticeable stutter every second, but requires less processing
than the 24@25 pull-down pattern because no special interlacing is required.
Gamma Correction
This pop-up menu is available only in the Playback Control tab (not the RT pop-up menu)
on older systems with graphics cards that don’t support gamma correction. If your
computer’s graphics card does not support gamma correction, you have two options:
 Accurate: High-quality gamma correction. This option is the most accurate but also
requires the most processing power.
 Approximate: Lower-quality gamma correction. This option leaves more processing
power available for real-time effects but results in less-accurate color and
brightness rendition.
For more information, see “ Choosing Real-Time Playback Gamma Correction Options ”
on page 669.
Record Settings
When using the Print to Video and Edit to Tape commands, you can control the quality
of video being output to tape independently of the real-time playback video quality in
the Canvas and Timeline.
Full Quality
When this option is selected, video is always output to tape at the highest quality.
Areas of your sequence that won’t play back at full resolution in real time must be
rendered prior to output.
Use Playback Settings
Final Cut Pro uses the selected real-time effects playback settings when outputting
your sequence to tape. If, as a result, your sequence will output at less than full quality,
you are warned of this prior to output. Outputting to tape at draft quality is useful for
quickly creating sample tapes of your program when you don’t have the time to render
all necessary effects first.
Video Scopes Playback
When the Video Scopes tab of the Tool Bench window is open, you can choose
whether the scopes update in real time or only when playback is stopped.