Changing clip size and adding rotation

http://www.adobe.com/education/pdf/production_studio/DV_module_10.pdf

Simply sliding a clip around only begins to exploit Motion effect’s possibilities. What
makes the Motion effect so useful is the capability to shrink or expand the clip and to
spin it.
For example, you can start a clip full-screen (or zoom in even farther) and then shrink
it to reveal another clip. You can spin a clip onto the screen starting as a small dot and
then spin it off the screen, having it grow as it moves away. And you can layer multiple
clips, creating several pictures-in-a-picture.
Before you dive into this task, look at Motion’s six keyframeable options:

• Position—The screen location of the clip’s anchor point (its center unless you change


the anchor point).
• Scale (Scale Height with Uniform Scale unchecked)—The relative size of the clip.

The slider has a range from 0% to 100%, but you can use the numerical representation
to increase the clip size to 600% of its original size.
Note: The percentage refers to clip border perimeter, not clip area. So 50% is equal to 25%
in terms of area and 25% is equal to 6.25% in area.
• Scale Width—You need to uncheck Uniform Scale to make Scale Width active.
Doing so enables you to change the clip width and height independently.
• Rotation—You worked with this in Lesson 9-3. You can input degrees or number
of rotations. For example 450° or 1 x 90. A positive number is clockwise and a negative
number is counterclockwise. The maximum number of rotations allowed in either
direction is 90, meaning that you can apply up to 180° full rotations to a clip.
• Anchor Point—The center of the rotation, as opposed to the center of the clip. You
can set the clip to rotate around any point in the screen including one of its corners or
around a point outside the clip like a ball at the end of a rope.
• Anti-flicker Filter—This feature is useful for images that contain high-frequency
detail such as fine lines, hard edges, parallel lines (moiré problems), or rotation. Those
characteristics can cause flickering during motion. The default setting (0.00) adds no
blurring and has no effect on flicker. 1.00 adds some blurring, which eliminates flicker.
     moire: a watered mohair

           Eliminate flicker

Thin lines and sharp edges in images sometimes flicker when shown on interlaced displays, such as many TV screens. The Anti-flicker Filter control in the Motion effect can reduce or eliminate this flicker. As you increase its strength, more flicker is eliminated, but the image also becomes softer. You may need to set it relatively high for images with lots of sharp edges and high contrast.

1. Select a clip in a Timeline panel, and click the Effect Controls tab.
2. Click the triangle next to the Motion heading to open the Motion controls.
3. Click the triangle next to the Anti-flicker Filter heading.
4. Drag the Anti-flicker Filter slider to the right to increase the strength of the filter.
5. Press the spacebar to preview the clip. Increase the filter strength if flicker is still visible, or decrease it if the image is too soft.
   You can change the intensity of the Anti-flicker Filter over the duration of a clip by setting Anti-flicker Filter keyframes at different values.