Apple Final Cut Pro 7 - Manual (Page 1430)

The following three pull-down patterns are available when your sequence has a frame
rate of 23.98 fps and you choose 29.97 fps external video output.
• 2:3:2:3: This pattern is the most processor-intensive method of introducing pull-down
but outputs NTSC video with the least noticeable temporal artifacts. For this reason,
2:3:2:3 pull-down is generally considered to have the most acceptable quality of motion.
This pull-down pattern is also referred to as 3:2 pull-down.
• 2:3:3:2: Also known as advanced pull-down. This pattern requires less processing to
output than 2:3:2:3 pull-down because 2:3:3:2 pull-down requires recompression or
regeneration of fewer frames, but the perceived motion quality is lower than when
using 2:3:2:3 pull-down.
• 2:2:2:4: This pull-down pattern requires less processing, so it is a good choice if you
want to preview video with as many real-time effects as possible. Keep in mind that if
you choose this pull-down pattern, you won’t be able to easily remove the pull-down
later.
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 Pull-down: 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.”
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.
1430 Chapter 84 Using RT Extreme