5.5

1197Motion User Guide
Retime audio in Motion
Motion lets you retime audio tracks in your project, to speed them up, slow them down, or
play them at a different speed. There are several ways to retime audio tracks:
• Adjust the Timing controls in the Properties Inspector to modify an audio track’s
playback speed, In and Out points, duration, and end condition (whether the track
stops, loops, or “ping-pongs” back and forth).
• Adjust the green bar in the Audio Timeline to modify an audio track’s duration and
playback speed, and to set whether or not the track loops.
Adjust an audio track’s timing parameters in the Properties Inspector
Each audio object in your project has timing parameters in the Properties Inspector.
1. In Motion, select an audio track in the Audio list or Audio Timeline.
2. Open the Properties Inspector, move the pointer over the Timing row, then click the
Show button on the right.
The Timing parameters appear.
Note: The Show button is hidden until you move the pointer over the right side of the
Timing row.
3. Adjust the Timing parameters:
• Speed: Drag over the number to set the speed of the audio track as a percentage.
The default is 100%. Values lower than 100 play the audio track more slowly than its
original speed, and also extend the Duration of the audio track. Values higher than
100 play the track faster than its original speed, and shorten its duration.
• In: Click the left or right arrow (or enter a new value in the field) to change the In
point of the audio track. Adjusting this parameter moves the audio track In point to
the specified frame without affecting track duration.
• Out: Click the left or right arrow (or enter a new value in the field) to change the Out
point of the audio track. Adjusting this parameter moves the audio track Out point to
the specified frame without affecting track duration.
• Duration: Click the left or right arrow (or enter a new value in the field) to set the total
duration of the audio track. Adjusting Duration also affects the Speed and the Out point.
• End Condition: Click the pop-up menu, then choose an option to set how playback
continues when audio ends in the track:
• None: The audio track’s duration in your project is equal to the duration of its
source media file (the default setting).
• Loop: When the end of the audio track is reached, the track loops back to the
beginning of the track and plays again. This can cause a jump in the audio track’s
apparent playback unless the track is designed to loop seamlessly. The End
Duration value must be greater than 0 for this parameter to have any effect.
• Ping-Pong: When the end of the audio track is reached, the next iteration of track
playback is reversed. The End Duration value must be greater than 0 for this
parameter to have any effect. (The Ping-Pong option is mainly for reference—
the reversed section of the audio track sounds noisy, because Motion does not
support true reverse playback.)