User Manual

Working with BWF Files
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In these examples, nn is the frame rate (25, 29.97, or 30), DF is drop-frame, and ND is
non-drop-frame.
Importing, Syncing, and Reimporting BWF Files
You can import BWF files into an Avid editing application approximately 10 to 12 times faster
than capturing in real time. The files maintain pure digital quality for all audio post processing.
For basic information on importing audio files, see “Importing Media Files” on page 285.
During import of NTSC BWF files, if no frame rate is specified in the file, a dialog box appears
and asks if the conversion should use 29.97 fps or 30 fps, and drop-frame or non-drop-frame.
Your choices depend on how the audio was recorded.
After you capture video, use the AutoSync feature to sync picture and sound or multiple tracks of
sound. If you are using BWF files from a 24-fps shoot in a PAL project, you must use the PAL
Method 2 approach, in which picture and sound are captured separately. If you are working in a
PAL 24p project, you need to take an extra step to make sure the picture and sound are correctly
synced.
You can reimport BWF files in the same way as you reimport other audio files. You can also
batch capture from a source tape, because the clips are associated with a tape name. For more
information on reimporting and batch capturing, see “Reimporting Files” on page 318 and
“Batch Capturing from Logged Clips” on page 239.
To import and sync BWF files:
1. Create a project, based on the source footage.
2. Import the log file, and capture the video footage.
3. Import the BWF file into the same bin in which you captured the video footage.
4. For 24p PAL projects, you need to create a new bin column:
a. Highlight the Start timecode column.
b. Select Edit > Duplicate.
c. From the list of columns, select Aux TC 24 and click OK.
d. In the dialog box, click Convert.
e. Display the Auxiliary TC1 column.
f. Highlight the Aux TC 24 column, and copy it to the Auxiliary TC1 column.
Use Auxiliary TC 1 only as a sync point reference for AutoSync. Do not use it for data
tracking or EDL generation.