Working in a 23.976p NTSC Project
Avid editing systems that include 24p support include a 23.976p NTSC project type. This project type is especially designed for capture and output of digital audio that has been transferred or recorded at 48 kHz, in sync with picture at 23.976 fps. A 23.976 project lets you maintain digital standards for all NTSC input and output at 23.976 fps.
Select this project type for one of the following reasons:
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Your audio and video sources have been shot at a camera rate of
23.976 fps using Advanced Pulldown (see Capturing with Advanced
Pulldown). This frame rate, sometimes referred to as 24p by video-
equipment manufacturers, is a DV-based standard-definition format,
with media being recorded and played back at 23.976 fps. Your Avid
editing application takes full advantage of the high-quality progressive
nature of this media, as you work in a 1:1 relationship with the frame
rate at which you captured your media.
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This rate is also used for film (film-based television) or 24p HD video
(television or feature film). These sources can be downconverted to
standard NTSC without further audio slowdown. Audio recorded at 48
kHz can remain at 48 kHz throughout the project.
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Your film and audio sources have been synced in the telecine process
and transferred to Digital Betacam or other digital videotape formats.
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The 23.976 fps frame rate is sometimes referred to as 23.97 fps or 23.98
fps.
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The 23.976 fps frame rate is in direct proportion to the NTSC broadcast
frame rate of 23.97 fps, which is used for film-to-tape transfer to the Avid
editing system.
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See the following topics:
