Apple Final Cut Pro 7 - Manual (Page 380)

Important: DV sequences sometimes use 32 kHz/12-bit settings, but these settings are
not recommended. As long as you don’t record your DV footage using 32 kHz/12-bit, you
should not use these settings for your sequence.
Audio files can be converted using the Export Using QuickTime Conversion command.
To convert a CD audio file so it matches your sequence settings
1 Select a sequence, then choose Sequence > Settings.
2 Check the sample rate of the sequence in the Audio Settings area of the General tab,
then click OK.
For DV sequences, the sample rate is usually 48 kHz.
3 Select an audio clip in the Browser that you want to convert to a new sample rate.
4 Choose File > Export > Using QuickTime Conversion.
5 Choose AIFF from the Format pop-up menu.
6 Click Options.
7 In the Sound section of the Movie Settings dialog, click Settings.
8 In the Rate pop-up menu, choose the sample rate of your sequence, then click OK.
Make sure the size is kept at 16-bit.
9 Click OK.
10 Choose a name and location for the new file, then click Save.
Once the conversion is complete, you need to import the new media file into Final Cut Pro.
11 In the Finder, navigate to the location of your newly converted audio media file, then
select the file and drag it into your project in the Final Cut Pro Browser.
You may want to delete the old clip in your project so you aren’t confused by two clips
with the same name.
Tip: You can also convert multiple clips at once using the Batch Export command.
Importing Broadcast Wave Files
The Broadcast Wave Format (BWF) is an extension of the WAVE file format that includes
additional metadata. Because BWF files can store timecode information, this format is
particularly popular for video post-production. Many professional audio recorders today
can record BWF files.
BWF files store only the first timecode number; the remaining timecode numbers are
calculated by Final Cut Pro. Mapping timecode to audio samples is a straightforward
process for frame rates such as 25 fps and 30 fps, but the process is more complex for
29.97 fps video. There are two complications:
• 29.97 fps video is not really 29.97 fps, but rather 30 fps x 1000/1001, or
29.9700299700299700 fps (repeating).
380 Chapter 26 Importing Media Files into Your Project