Avid Technology Car Video System PT User Manual
Media Station|PT Guide
10
Frame-Rate Accurate Video
Editing and Sample-Rate Accurate
Audio Editing
Editing and Sample-Rate Accurate
Audio Editing
Media Station|PT edits with frame accuracy.
This means that in a 30-fps project, you can edit
at 30 different locations for every one second of
video. Pro Tools edits with sample rate accuracy.
In a 48-kHz session, there are potentially 48000
locations to edit for every second of audio.
This means that in a 30-fps project, you can edit
at 30 different locations for every one second of
video. Pro Tools edits with sample rate accuracy.
In a 48-kHz session, there are potentially 48000
locations to edit for every second of audio.
When Pro Tools exports an AAF or OMF compo-
sition destined for an Avid application, it must
ensure that the audio files line up on frame
boundaries. To do this, it might have to split an
existing audio region into three clips. For exam-
ple, the following illustration shows a 5-frame
video clip and a corresponding audio region. In
Pro Tools, the audio regions might not line up
on video frame boundaries.
sition destined for an Avid application, it must
ensure that the audio files line up on frame
boundaries. To do this, it might have to split an
existing audio region into three clips. For exam-
ple, the following illustration shows a 5-frame
video clip and a corresponding audio region. In
Pro Tools, the audio regions might not line up
on video frame boundaries.
In order to export frame accurate audio regions,
Pro Tools splits the audio media on frame
boundaries and fills any gaps with silence. The
following illustration shows the resulting audio
regions that are exported to Media Station|PT.
Pro Tools splits the audio media on frame
boundaries and fills any gaps with silence. The
following illustration shows the resulting audio
regions that are exported to Media Station|PT.
When you use Export Selected Tracks as
OMF/AFF to export tracks from Pro Tools with
Enforce Avid Compatibility enabled, a number
of additional media files labeled Sample Accu-
rate Edit appear in the Avid bins. These are the
additional media files that Pro Tools creates to
ensure that Media Station|PT receives frame-ac-
curate audio. You also see the sample-accurate
edit media files if you zoom in on the imported
audio in the Timeline.
OMF/AFF to export tracks from Pro Tools with
Enforce Avid Compatibility enabled, a number
of additional media files labeled Sample Accu-
rate Edit appear in the Avid bins. These are the
additional media files that Pro Tools creates to
ensure that Media Station|PT receives frame-ac-
curate audio. You also see the sample-accurate
edit media files if you zoom in on the imported
audio in the Timeline.
Figure 1. Original audio region
One Pro Tools audio region
5 frame video clip
The original audio region does not line up on video frame boundaries
Figure 2. Exported audio region
Three exported audio regions
5 frame video clip
Exported audio regions line up on video frame boundaries
New audio region
with padded silence
New audio region
with padded silence