User Manual

Selecting Settings for Capture
178
Option Description
Video Pulldown Cadence Lets you specify how your Avid editing application handles pulldown frames:
• Video rate, no pulldown: Select this option when capturing 24-fps footage that
was transferred MOS (roughly translated as “without sound”) to 30 fps by
speeding up the film, and the audio was brought into your Avid system
separately at 100 percent of the actual speed.
• Standard 2:3:2:3 pulldown: Select this option when capturing 24-fps footage
that was transferred to 30 fps by duplicating frames (pulldown) and the audio
is synchronized to the picture.
• Advanced 2:3:3:2 pulldown: Select this option when capturing 24-fps footage
that was recorded to 60 fields (NTSC) using Advanced Pulldown and the
audio is synchronized to the picture.
If you are capturing sound that was created during an NTSC film-to-tape transfer,
set the pulldown switch before you begin capturing. See “Setting the Pulldown
Switch” on page 192.
For NTSC projects, you can mix footage transferred with pulldown and footage
transferred without pulldown (video rate). You can also mix sound transferred at
0.99 (with pulldown) and 1.00 (without pulldown).
Audio Transfer Rate When you create a 24p PAL film project, you define the audio transfer rate in the
New Project dialog box. (You do not need to do this for a 25p PAL project
because there is no film speedup during the transfer.) You need to keep the audio
transfer rate constant for the project. However, if there is a specific element that
you need to capture at a different rate, you can change the rate to one of the
following options:
• Film Rate (100%): Select this option when your 24-fps film footage was
transferred MOS to 25 fps by speeding up the film, and the audio comes in
separately at 100 percent of the actual speed (PAL Method 2).
• Video Rate (100%+): Select this option when your 24-fps film footage was
transferred to 25 fps by speeding up the film, and the audio is synchronized to
the video picture. This means that the audio speed is increased by 4.1 percent
(PAL Method 1).
For PAL 24p projects, you can mix audio that has been transferred at 4.1
percent speedup (video rate, PAL Method 1) with audio that has not been
transferred (film rate, PAL Method 2). However, Avid does not recommend
this. See “Audio Transfer Options for 24p PAL Projects” on page 1506.
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The Info tab in the Project window lets you view the audio transfer rate you
selected when you created the project. The actual audio transfer rate might
be different from the display if you change the audio transfer rate in the
Film and 24p Settings dialog box.