Apple Final Cut Pro 7 - Manual (Page 1652)

Standard Reverse Telecine
The telecine process adds duplicate video fields to make 24 fps film footage fit within
29.97 fps video. The film-to-NTSC video case is particularly complex: the film is slowed
from 24 to 23.98 fps during the telecine process to match the discrepancy between 30
and 29.97 fps. Simultaneously, film frames are repeated in a 3:2 pattern, resulting in
duplicate video fields. Once your video footage is captured to disk, you need to perform
a reverse telecine operation to remove the 3:2 pull-down. You can perform the reverse
telecine operation on media by choosing Tools > Cinema Tools Reverse Telecine.
Although you can initiate the reverse telecine process in Final Cut Pro, Cinema Tools
actually performs the task. If you perform reverse telecine in Cinema Tools, more options
are available than in Final Cut Pro. Final Cut Pro always uses the last settings that were
used in Cinema Tools. You should always perform reverse telecine on a clip directly in
Cinema Tools to verify the proper settings before batch processing clips using Final Cut Pro.
Important: Performing reverse telecine using Final Cut Pro modifies a clip’s original media
file—you do not have the option of creating a new media file as you do when using
Cinema Tools. Also, you must have read-and-write privileges for the media files you want
to process.
To use Final Cut Pro to start the Cinema Tools reverse telecine process
1 In the Browser, select the clips you want to process.
Note: Only files using a 29.97 fps rate will be processed.
2 Choose Tools > Cinema Tools Reverse Telecine.
Cinema Tools opens and performs the reverse telecine operation, displaying a dialog that
shows the task’s progress.
Removing Advanced Pull-Down
Advanced pull-down is an in-camera or in-deck method of embedding 23.98 fps video
within 29.97 fps video. It uses the same principles as traditional film-to-video telecine 3:2
pull-down, but it uses a slightly more complex 2:3:3:2 pattern that is more efficient for
computer editing systems to remove. Advanced pull-down is used in video recording
systems to achieve 23.98 fps within a 29.97 fps format. Film is not transferred using
advanced pull-down. Formats that support advanced pull-down include Panasonic DV,
DVCPRO, DVCPRO50, and DVCPRO HD. Because film is not involved, Cinema Tools is not
necessary when working with this kind of footage.
Note: Many of these video camcorders also have a traditional 3:2 pull-down mode. If your
goal is to edit at 23.98 fps, there is no value in using this mode because you can’t take
advantage of advanced pull-down removal in Final Cut Pro. If you accidentally shoot in
this mode and you want to remove the pull-down, you will have to use the Cinema Tools
Reverse Telecine feature.
For more information, see “Working with 24p Video.”
1652 Chapter 99 Working with Film and Cinema Tools