2:2:4 pull-down, A b c d – Apple Final Cut Pro 7 User Manual

Page 1938

Another feature that makes advanced pull-down removal more efficient is the insertion
of “flags” in the video signal that can be used by software to automatically detect which
frames must be removed. This makes advanced pull-down an automatic process compared
to the manual cadence identification usually required to remove 3:2 pull-down.

Despite its efficiencies, the advanced pull-down pattern is not as aesthetically pleasing
as 3:2 pull-down. If you plan to finish your project at 23.98 fps, advanced pull-down is
usually the best choice. However, if you plan to output your final 24p project to 29.97 fps
interlaced video, you may want to add 3:2 pull-down because its pattern is considered
to be more visually appealing.

2:2:2:4 Pull-Down

This is an efficient but low-quality playback option used for previewing 23.98 fps footage
on an NTSC monitor. Few systems can reverse this kind of pull-down, so you should never
record footage with this kind of pull-down. This option is available for situations when
processing power is at a premium and your system is unable to generate 2:3:2:3 pull-down
or advanced pull-down during playback.

D D D

A A B B C C D D D D A A B B C C D D D D A A B B

C D D D D A A B

D D D A

B C

D D

A B C D

A A B B C C D D D D

Field

A B C D A

D A B C D A B C D A B C D A B C D

B C

Before (23.98 fps)

After (29.97 fps)

One second

2:2:2:4 Pull-Down

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Appendix D

Working with 24p Video