Classroom in a book

5
Drag the clip completely off the screen to the left, as shown here.
6
Fine-tune that adjustment by changing the Position values in the Effect Controls 
panel to –640, 360.
Since 640 is half of 1280, this puts the right edge of the clip at the left edge of 
the screen frame.
#
 Note:
Adobe 
Premiere Pro CS5 
uses something like 
an upside-down x, 
y coordinate system 
for screen location. 
That coordinate 
system is based on a 
methodology used in 
Windows for so long 
that to change it now 
would create numerous 
programming head-
aches. The upper-left 
corner of the screen is 
0, 0. All x and y values 
respectively to the left 
of and above that point 
are negative. All x and 
y values respectively to 
the right of and below 
that point are positive.

---

ptg
ADOBE PREMIERE PRO CS5 CLASSROOM IN A BOOK
189
7
Press Page Up or Home to put the current-time indicator at the beginning of 
the clip or drag the current time indicator there, and add a Position keyframe 
there by clicking Position’s “Toggle animation” button.
8
Drag the current-time indicator to the middle of the clip, and change the 
Position values to 640, 360 (the center of the screen).
Changing the Position parameters adds a keyframe at the current-time 
indicator.
9
Press Page Down and then the left arrow key to position the current-time 
indicator at the end of the clip.
10
Change the Position values to 640, –360.
This places the clip completely above the screen and adds a keyframe.
11
Play the clip.
It moves smoothly onscreen and then slides off the top. You have created a path 
(if you don’t see the path, click the word 
Motion
in the Effect Controls panel to 
switch on its display). Make note of a few things (shown in the following figure):