Apple Soundtrack Pro 2 - Manual (Page 245)

Chapter 6 Editing Audio Files 245
Saving Audio File Projects Containing Video
For audio file projects containing video, the video file is saved as a reference movie. If
the video file is moved or deleted, or if you copy the project to another computer, the
video may be missing when you open the project. To add the video to the project
again, drag the video file into the Video tab or the video track of the Timeline.
When you open a QuickTime movie in the File Editor as an audio file project, or send an
audio clip from Final Cut Pro to an audio file project, by default the source audio is
referenced. When you save the project by choosing File > Save As, you can include the
source audio in the project. If the source audio is moved or deleted, or if you copy the
project to another computer, the audio might not play correctly.
The first time you save an audio file project with referenced audio, a dialog appears
asking if you want to include or reference the source audio. Your choice becomes the
default behavior for new audio file projects and can be changed in the General
preferences pane.
About Saving QuickTime Movies and File Size
When you lengthen or shorten the duration of a QuickTime movie in the File Editor by
adding or deleting audio, the file size of the movie might be larger than expected
when you save the movie. For example, if you shorten the duration of the movie by
deleting audio, the file size of the movie does not decrease.
When you change the sample rate, bit depth, or number of channels in a QuickTime
movie, the file size of the saved movie might be larger than expected. Also, when
saving to a QuickTime movie that uses a compressed audio format, the audio is saved
uncompressed and the file size might be larger than expected.
In all of the above cases, saving the movie to a different location results in the file being
saved at the correct file size.