Apple M8728Z/A User Manual - Page 36

Exporting Audio EDLs, Synchronizing the Audio with the Video

Page 36 highlights

You can export the audio from Final Cut Pro as an Open Media Framework (OMF) file for use at an audio post-production facility. An exported OMF file contains not only the information about audio In and Out points, but also the audio itself. This means that, for example, any sound effects clips you may have added are included. When you use an OMF file, the recording quality must be as high as possible, as this is what the audience will hear. Make sure to use a good capture device and observe proper recording levels. Exporting Audio EDLs Another approach is to use lower-quality clips in Final Cut Pro and then export an audio Edit Decision List (EDL) for use at an audio post-production facility. There they can capture high-quality versions of the audio clips straight from the original production audio source and edit them based on the audio EDL. For this to work, the timecode and roll numbers of the original sound rolls must be kept track of and used to create the audio EDL. Audio clips captured as part of video clips do not retain their original timecode and roll numbers, and the Final Cut Pro EDL cannot be used by an audio post-production facility. This is most common with clips created from scene-and-take transfers, where the audio is synchronized to the film and recorded onto the videotape, losing the original audio timecode. But because the telecine log from the transfer generally contains timecode and reel number information for both the video and audio, importing this log into the Cinema Tools database allows the database to track audio usage, and you can export an audio EDL from Cinema Tools once you finish editing. See Exporting an Audio EDL for details about the process. Synchronizing the Audio with the Video The production audio for a film is recorded separately on a sound recorder; this is known as dual (or double) system recording. Synchronizing the audio with the film and video, ensuring good lip-sync, is a critical step in making a movie. How you synchronize depends on the equipment used and when syncing is done. There are also considerations related to your video standard, how the telecine transfer was done, and the timecode used that directly impact the process. There are three times when audio synchronization is important: • During the telecine transfer • During editing • While creating the release print Different strategies may be required to maintain sync at each of these times. Make sure you have planned accordingly. 36 Chapter 2 Before You Begin Your Film Project

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You can export the audio from Final Cut Pro as an Open Media Framework (OMF) file for
use at an audio post-production facility. An exported OMF file contains not only the
information about audio In and Out points, but also the audio itself. This means that, for
example, any sound effects clips you may have added are included. When you use an
OMF file, the recording quality must be as high as possible, as this is what the audience
will hear. Make sure to use a good capture device and observe proper recording levels.
Exporting Audio EDLs
Another approach is to use lower-quality clips in Final Cut Pro and then export an audio
Edit Decision List (EDL) for use at an audio post-production facility. There they can capture
high-quality versions of the audio clips straight from the original production audio source
and edit them based on the audio EDL. For this to work, the timecode and roll numbers
of the original sound rolls must be kept track of and used to create the audio EDL.
Audio clips captured as part of video clips do not retain their original timecode and roll
numbers, and the Final Cut Pro EDL cannot be used by an audio post-production facility.
This is most common with clips created from scene-and-take transfers, where the audio
is synchronized to the film and recorded onto the videotape, losing the original audio
timecode. But because the telecine log from the transfer generally contains timecode
and reel number information for both the video and audio, importing this log into the
Cinema Tools database allows the database to track audio usage, and you can export an
audio EDL from Cinema Tools once you finish editing.
See
Exporting an Audio EDL
for details about the process.
Synchronizing the Audio with the Video
The production audio for a film is recorded separately on a sound recorder; this is known
as
dual
(or
double
)
system
recording. Synchronizing the audio with the film and video,
ensuring good lip-sync, is a critical step in making a movie. How you synchronize depends
on the equipment used and when syncing is done. There are also considerations related
to your video standard, how the telecine transfer was done, and the timecode used that
directly impact the process.
There are three times when audio synchronization is important:
• During the telecine transfer
• During editing
• While creating the release print
Different strategies may be required to maintain sync at each of these times. Make sure
you have planned accordingly.
36
Chapter 2
Before You Begin Your Film Project