Classroom in a book

Recognizing the downstream 
effects of changing time
You may decide to change the speed at the beginning of the Timeline after assem-
bling many clips in your project. It is important to understand how changing the 
speed of a clip affects the rest of the clips “downstream.”
1
Open Lesson 11-6.prproj. Notice that there are three clips on the Timeline in 
the Video 1 track, with one title clip, called 
drafty
, positioned over the middle 
clip. In this exercise, you’ll change the speed of the first clip and see how the 
rest of the Timeline is affected.
#
 Note:
After the 
reverse-motion 
keyframe is created, 
Adobe Premiere Pro 
adds a keyframe to the 
right at the point in the 
clip where you started 
the reverse motion.
#
 Note:
To see how 
the application of this 
effect should look, open 
the Complete sequence.

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ptg
ADOBE PREMIERE PRO CS5 CLASSROOM IN A BOOK
213
2
Right-click (Windows) or Control-click (Mac OS) the Medieval_Hero_01 clip, 
and choose Speed/Duration from the context menu. Change Speed to 50%, and 
click OK.
Notice that the rest of the Timeline was not affected, but the first clip plays 
at 50 percent speed. The clip could not expand because it abuts against another 
clip. The Out point of the clip was adjusted in order to allow it to play at 
50 percent speed.
3
Press Ctrl+Z (Windows) or Command+Z (Mac OS) to undo the speed change.
4
Right-click (Windows) or Control-click (Mac OS) the Medieval_Hero_01 clip, 
and choose Speed/Duration from the context menu. Change Speed to 50%, and 
also select the Ripple Edit, Shifting Trailing Clips option; then click OK.
Notice that now the first clip expands to play at 50 percent and the rest of the 
Timeline shifts to accommodate it, including the title on the Video 2 track.