Classroom in a book

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The Value graph shows the parameters’ values at any given time.
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The top and bottom Velocity numbers on the left side of the graph indicate 
the spread of the parameters’ velocity in degrees per second.
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The Velocity graph shows the velocity between keyframes. The sudden 
drops or jumps represent sudden changes in acceleration—
jerks
, in physics 
parlance. Points on the graph above the middle of the Velocity graph area 
represent positive (clockwise) speeds, and points below the center represent 
negative (counterclockwise) speeds. The farther the point or line is from the 
center, the greater the velocity (and you thought high-school algebra was a 
waste of time).

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ptg
176
LESSON 9
Adding Video Effects
10
Press Enter (Windows) or Return (Mac OS) to render the work area; then play 
the clip.
The text spins clockwise twice, spins faster going counterclockwise three times, 
and then slows down for one last rotation.
11
Right-click (Windows) or Control-click (Mac OS) the first keyframe, and then 
choose Ease Out.
This does several things:
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The keyframe icon changes to an hourglass.
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The keyframe on the Value graph now has a Pen Tool handle, and the graph 
has a slight curve.
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The keyframe on the Velocity graph has a similar Pen Tool handle and 
a more obvious curve. That curve shows the velocity change over time—
its acceleration.
12
Play that portion of the clip. The effect looks more realistic as the motion “eases.”
13
Right-click (Windows) or Control-click (Mac OS) the next three keyframes, and 
apply (in this order) the Bezier, Auto Bezier, and Ease In interpolation methods.
Here’s a rundown on the Adobe Premiere Pro keyframe interpolation methods: