24 @ 25pull-down, 24 @ 25 pull-down – Apple Final Cut Pro 6 User Manual
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Appendix C
Working with 24p Video
423
V
24 @ 25
True 24 fps film or video can be transferred to PAL (25 fps) by speeding up the frame rate
by 4 percent. For film editing purposes on PAL video, applications like Cinema Tools can
slow the 25 fps PAL video back to 24 fps (a process called conforming) so that sync is
maintained with the original audio.
For showing film-originated movies on PAL video, both film and audio speed are
increased by 4 percent. The speed increase is considered acceptable, although the
audio must be “pitch shifted” down to match the original. This is the most common
method for film-to-PAL transfers.
24 @ 25 Pull-Down
This method does not change the speed of the original film. Instead, film frames
12 and 24 are pulled down for a duration of three fields instead of two, creating
a subtle stutter each half second. This pattern is technically described as
2:2:2:2:2:2:2:2:2:2:2:3 pull-down.
24 fps
25 fps
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