ADOBE PREMIERE PRO 2.0
User Guide
128
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Do one of the following:
•
To change duration numerically, choose Clip > Speed/Duration, click the link button
to unlink speed and
duration, type a new duration, and click OK.
•
To change duration visually in the Timeline panel, move the Selection tool over an edge of the clip so that it
changes to the Trim Out or Trim In tool, and drag the edge. If you are making the clip longer, the source clip must
contain enough additional frames beyond its source In or Out point to accommodate the adjustment.
If you want to trim a clip edge that’s already adjacent to another clip, use the methods described in “Trimming using
ripple and rolling edits” on page 122.
If you set a clip in the Timeline panel to the duration you require, but you don’t like where the clip begins and ends
in relation to the adjacent clips, you can use the Slip tool to adjust the clip without changing the clip’s program In and
Out point or duration. (See “To perform a slip edit” on page 125.)
See also
“Changing clip speed” on page 128
Changing clip speed
The
speed
of a clip is the playback rate compared to the rate at which it was recorded. Initially, a clip plays back at its
normal, 100% speed. (Even if the source footage’s frame rate doesn’t match the project’s, the project automatically
reconciles the difference and plays back the clip at its proper speed.)
Changing a clip’s speed causes its source frames to be either omitted or repeated during playback, thereby making
the video or audio play faster or slower. So naturally, a change in speed results in a corresponding change in duration.
When you change the speed of a clip containing interlaced fields, you may need to adjust how Adobe Premiere Pro
treats the fields, especially when the speed drops below 100% of the original speed. (See “To create interlaced or
non-interlaced clips” on page 130.)
You can also set a clip’s speed to fill a duration by performing a four-point edit.
In the Timeline panel, clips with speed changes are indicated as a percentage of the original speed.
To change a clip’s speed
1
Select a clip in the Project panel or Timeline panel.
2
Choose Clip > Speed/Duration.
3
Set any of the following options, and then click OK:
Speed
Sets the playback speed of the clip as a percentage of its original speed. To change the speed without affecting
the duration, click the link button
to unlink speed and duration.
Duration
Sets the duration of the clip. To change the duration without affecting the speed, click the link
button
to unlink speed and duration.
Reverse Speed
Reverses the clip’ video frames and audio.
Maintain Audio Pitch
Preserves the audio pitch when changing the speed of the clip.