6.7

Using the Digital Cut Tool: Advanced
515
25 percent and is not usable. Use this output rate for animations and other special
applications. 24 fps NTSC requires a sample-rate conversion, so high-quality audio is not
guaranteed.
The following table summarizes the change in audio rates for 23.976p output options.
Selecting the Timecode Format for Output
If you select one of the three NTSC output formats, you need to indicate the timecode format
for output: drop-frame or non-drop-frame.
You can designate drop-frame or non-drop-frame timecode for devices connected to one or
both of the following outputs:
• RS422 Output (serial port on the computer)
• LTC (LTC OUT on the Avid Adrenaline hardware)
n
To output LTC timecode, you need to select the option “Generate LTC on Playback” in the
General Settings dialog box. For more information, see “Using LTC Timecode for Output”
in the Help.
By default, the menus display the timecode format of the sequence you loaded into the
Timeline.
n
Your Avid editing application can generate LTC at 29.97 fps only. See “Indicating the
Destination Timecode Rate” on page 516.
To select the timecode format for output:
1. Select Clip > Digital Cut.
2. Do one or both of the following:
t Click the RS422 Output menu, and select Drop or Non-Drop
t Click the LTC Output menu, and select Drop or Non-Drop
Audio Play Rates for 23.976p Projects
Output Play Rate Source Output Audio Rate
23.976 NTSC 23.976 fps 48 kHz (no change)
24 NTSC 23.976 fps 48.048 kHz (0.1% speedup)
29.97 NTSC 23.976 fps 60 kHz (25% speedup)