Using audio edls for dual system sound – Apple Cinema Tools 4 User Manual
Page 227
See
Pull-Down Patterns You Can Apply to 23.98 fps Video
for details about the available
patterns.
3
Output the video using your FireWire connection.
Refer to the Final Cut Pro documentation for details about outputting video.
The pull-down is performed on the video that is sent out of your computer via FireWire.
Using Audio EDLs for Dual System Sound
As with film productions, 24p video productions almost always record the sound separately
from the picture, with a separate sound recorder. This is referred to as using dual system
sound. This audio is often simultaneously recorded onto the videotape of the 24p VTR,
making it easy to later capture both the video and audio, with the audio already synced
to the video for the edit.
Final edited
master
24p video
Original production audio
Synchronized
video
Synchronized
audio
24 fps
EDL
Audio
EDL
Final Cut Pro with
Cinema Tools
Production
audio mixer
Offline edit
Video
EDL export
Production
video
24p VTR
Audio
recorder
Online
24p editor
Audio
finishing
Database
for audio
EDL export
In most cases, once you have finished editing, you will want to recapture the audio from
the original production sound rolls and finish it at an audio post-production facility. The
difficulty is that the EDL from Final Cut Pro does not know the roll numbers and audio
timecode of the original production sound rolls; it only has the videotape information.
Because the production sound recorder is started and stopped independently of the VTR,
its timecode will not match the VTR’s.
Using its database feature, Cinema Tools can match the edits using the videotape audio
with the original production sound rolls and generate an audio EDL that can then be
used to recapture and finish the audio.
You must create a Cinema Tools database before you can use this feature. See
and Configuring a New Database
for details about creating a database and
for details about exporting an audio EDL from Cinema Tools.
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Chapter 13
Working with 24p Video and 24 fps EDLs