Apple Motion 5.1.1 User Manual
Page 972
Chapter 22
Motion tracking
972
After the motion analysis is complete, you can apply it in either of two ways. The clip can be
smoothed, eliminating unwanted jitter while maintaining the general motion of the camera, or
the clip can be locked, stabilizing the subject. The smoothing can affect translation, rotation, or
scale, making it more flexible for some operations than the other tracking behaviors.
The Stabilize behavior is primarily useful for removing unwanted trembling from less-than-
stable crane or jib arm moves, eliminating teetering from handheld walking shots, or reducing
vibrations in automotive shots.
Note: Motion blur present in the image remains, even though the subject in the shot is
smoothed or locked.
Stabilize a clip using the Stabilize behavior
1
Apply a Stabilize behavior to the clip you want to stabilize.
Note: Unlike other behavior workflows, the Stabilize behavior’s automatic mode analyzes the
entire clip from its first frame, rather than from the current playhead position.
2
Set the options for the analysis:
a
Choose one of the following options from the Method pop-up menu in the HUD or Behaviors
Inspector:
•
Choose Stabilize to lock down an image, removing problems such as camera shake.
•
Choose Smooth to smooth camera movement in the clip.
b
Choose one of the following options from the Borders pop-up menu:
•
Choose Normal to maintain the size of the stabilized footage. Resulting transformations
made to the stabilized image may cause moving black borders to appear around the edges
of the clip. A very shaky clip results in large black borders.
•
Choose Zoom to expand the clip to the full size of the Canvas. This prevents black borders
from appearing around the edges of the stabilized clip.
Normal borders maintain the
size of the stabilized clip but
create black borders around
the clip’s edges.
Zoomed borders scale the
stabilized clip so the clip
does not move away from
the edge of the Canvas.
Note: For suggestions on correcting the black borders, see
on page 991.
c
Choose one of the following options from the Direction pop-up menu:
•
Choose Horizontal and Vertical to apply the stabilize transformation to the X and
Y dimensions.
67% resize factor