Apple Soundtrack Pro - Manual (Page 192)

192 Chapter 8 Working With Video in Soundtrack Pro
To align an audio clip with a marker:
m Make sure that snap is turned on and that Markers is selected in the View > Snap to
menu, then drag the clip to the position of the marker in the Timeline.
Scoring a Marker to the Playhead
For tracks set to Beats-based time format, you can score a time marker or Final Cut Pro
scoring marker to the playhead, so that you can synchronize the audio with the video.
Scoring a marker to the playhead adjusts the tempo so that the required number of
beats exactly fills the amount of time between the last tempo change and the marker’s
position in the Time ruler.
When you score a marker to the playhead, a set of special envelope points is created in
the project’s tempo envelope, from the previous envelope point (or the beginning of
the tempo envelope, if no previous envelope point exists) to the position of the marker.
These special envelope points are locked and cannot be moved (but can be deleted).
The locked envelope points, and the segment of the tempo envelope between them,
appear red.
The tempo change created when you score a marker to the playhead is always
instantaneous; that is, the tempo changes from the previous tempo immediately,
without ramping. The distance between the two envelope points determines whether
the resulting tempo change can be heard easily. If the resulting change in tempo
sounds too abrupt, you can edit the tempo envelope to make the tempo change less
noticeable.
With Markers selected,
you can align a clip with
a marker.