Apple Soundtrack User Manual download pdf (Page 109)

Chapter 6 Working in the Timeline 109

Changing the Offset of an Audio Clip

When you add an audio clip to the Timeline, the clip plays back from the beginning of

the source audio file. The point in the audio file where the clip starts playing is called

the offset. By default, a clip’s offset is zero, the beginning of the source audio file. You

can change the offset so that the clip starts playing from a later point in the source

audio file. This allows you to use the audio from a later part of the source file without

splitting the clip.

To change the offset of a clip:

m Select the clip, then Command-Option-drag left (toward the beginning of the project).

Once you have changed the offset by dragging to the left, you can also drag to the

right to change the offset.

Note: You can only drag the offset to a later part of the clip’s source audio file, not to a

point before the beginning of the file.

When you change the offset of a clip, the waveform moves inside the clip’s boundary to

indicate the change in offset. The length of the clip stays the same. If the clip has not

been resized, it will reach the end of the source audio file and start looping. As you

move the offset by dragging, the clip’s notches move to show the point at which the

clip will start looping.

Changing a Clip’s Playback Mode

Audio files you add to the Timeline can be either looping or non-looping. Looping files

are special audio files that can be used to create repeating patterns, and include

musical phrases useful for creating music beds. Audio files containing discrete, non-

rhythmic sounds, sound effects, and other non-musical sounds such as dialogue or

sound effects should be used as non-looping files in most cases.

When you add an audio file to the Timeline, the audio file is added as a clip with non-

looping playback mode unless the audio file is tagged as a looping file. You can change

the playback mode of a clip after you add it to the Timeline.

Command-Option-drag left

to change the clip’s offset.

The waveform moves inside

the clip’s boundary to

indicate the change in offset.

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Apple Soundtrack User Manual Page 109