Examining Motion effect characteristics p4_09

cs 3   http://www.adobe.com/education/instruction/teach/digitalvideo/dvcg_cs3_p4_student_guides_a4.pdf#22
http://www.scribd.com/doc/16658315/Adobe-Premiere-Elements-Help
http://www.tebyan.net/index.aspx?PID=31171&PageSize=10&PARENTID=1964&LANGUAGE=3&PageIndex=1
http://www.kougarmedia.com/resources/DV_guide.pdf
http://www.lynda.com/home/DisplayCourseN.aspx?lpk2=702
How to set and adjust Motion effect Position values and keyframes
To examine some Motion settings, follow these steps:

1. Drag the current-time indicator anywhere in the clip so you can see the video in the Program Monitor.

2.Click the image in the Program Monitor. 
That puts a bounding box with a crosshair and handles around the clip (shown here) and activates the Motion effect in the Effect Controls panel. Clicking Motion or its Transform button in the Effect Controls panel will also activate the clip bounding box in the Program Monitor.
The box includes a centered anchor-point cross hair and handles. The Motion effect is now activated (highlighted—white letters on a gray background) in the Effect Controls panel. Clicking “Motion” (or its transform buttom) in the Effect Controls panel is the other way to activate the effect.

3. Click anywhere in the clip bounding box in the Program Monitor, drag this clip around, and note how the Position values in the Effect Controls panel change.

4. Drag the clip so its center is directly over the upper left corner of the screen and note the Position values in the Effect Controls panel are 0, 0 (or close to that depending on exactly where you placed the center of the clip). The lower right corner is 720, 480, the standard NTSC DV screen size. 

Note: Adobe Premiere Pro uses something like an upside-down X/Y axis for screen location, which is based on a system used in Windows for so long that to change it now would create numerous programming headaches. The upper left corner is 0, 0. X and Y values to the left and above that point respectively are negative. X and Y values to the right and below that point respectively are positive.

5. Drag the clip completely off the screen to the left (Figure x as follows suppled later).

6. Fine-tune that adjustment by changing the Position values in the Effect Controls panel to -360, 240.Since 360 is half of 720, this puts the right edge of the clip at the left edge of the screen frame. 


7. Put the CTI at the beginning of the clip (Clip Page Up or Home) and apply a Position keyframe there by clicking Position’s Toggle Animation stopwatch.

8. In the timeline panel, drag the CTI to the center of the clip. Fine-tune that location placement by setting the Position values to 360, 240. (Measured by the center cross hair of the clip frame)
Changing the parameters adds a keyframe there.

9. Put the CTI at the end of the clip (press Page Down, then the left arrow key).

10. Change the Position values to 360, -240. 
That puts the clip completely above the screen and adds a keyframe.

11. Play the clip.

It moves smoothly on-screen, then slides off the top. You have created a path (if you don’t see

the path, click on Motion to switch on its display). Make note of a few things:

• It’s a curved path. Adobe Premiere Pro automatically uses Bezier curves for motion.

• The little dots describe both the path and velocity. Dots close together represent a slower speed, dots more spread out represent a faster speed. (figure supplied later)


>> The little four-point  star representes a keyframe.


12. Drag the center keyframe in the Program Monitor down and to the left. Notice that the dots get closer together to the left of the keyframe and farther apart to the right. ( figure supplied later)


13. Play the clip and note that it moves slowly until the middle keyframe and then speeds up.


14. Drag the center keyframe in the Program Monitor down and to the right again. (figure needed)
This time it builds a parebola with dots spread evenly at two sides




Note: By moving the keyframes, you changed their spatial locations and thereby the distance the clip traveled between keyframes. But you did not change the time between keyframes, so the clip moves faster between clips that are farther apart and slower for those closer to each other.

The clip bounding box must appear in the screen, or you cannot click it and make it appear. The other way is to click Motion's transform button.
While the CTI is not in the clip (the point where the clip ends or you click Page Down to put CTI to the end), you cannot make bounding box appear.


Click Animation button and agree to delete will delete all keyframes. If you want to delete one keyframe, just select and then delete it.