Instruction Manual

231
Locating Missing Audio
Controlling Playback
Synchronizing External Video Playback to
Audio
Because there is more latency in FireWire video playback than in PC digital
audio playback, video playback on an external device will probably be
playing back later than the audio tracks in SONAR.
To Sync External Video to Audio
1. Right-click the Video view and choose Video Properties from the
popup menu to open the Video Properties dialog.
2. On the Render Quality tab of the dialog, under External DV Output,
enter an offset number in the Video Sync Offset field. The number you
enter here causes the Video to start playing sooner than the audio. It’s
helpful if your video has some pre-roll footage that contains a visual
sync point.
Note: The offset is accurate to 3 decimal places, e.g. 1 ms (a
thousandth of a second). One frame of video is approximately 33 ms
long for NTSC and 40 ms for PAL; the offset will typically be less than 1
second.
3. Click OK to close the dialog. Play your video, and readjust the Video
Sync Offset number as needed.
Locating Missing Audio
If you try to open a project and SONAR is unable to locate all the audio files
that the project references, the Find Missing Audio dialog appears. The
Find Missing Audio dialog helps you find any missing audio in your project.
See:
The Find Missing Audio File Dialog
Restoring Missing Audio Files
Managing Shared and External Files
The Find Missing Audio File Dialog
Use the Locate Missing Audio File dialog to find missing audio in your
project. The following is a brief description of the options you have in this
dialog:
• Open—Click this button once you have searched for and found the
missing audio file.