Set
keyframes for spline vertices and tangents over the course of the
clip.
To animate a spline:
Move to the frame where you want to begin
animating the spline.
If necessary, do one of the following
to display the spline you want to animate:
From the Warp or Morph menu, click Source
to display source splines, or click Destination to display destination
splines. You can also use the Show buttons to display both source
and destination splines.
If you are working with two clips, with
either Input, Matte, or Result selected in the View box, toggle
the Input box to Input1 or Input2, depending on which spline you
want to animate.
Select the spline in the clip or its
node in the Distort schematic.
Enable Auto Key in the Animation menu.
Select Move mode in the Edit box, then
select and move one or more vertices to a new location. You can
also move vertex tangents.
Advance the positioner to a different
frame then move some more vertices.
Continue to move vertices and tangents
as you progress through the clip, so the spline follows the movement
of the feature you are warping or morphing.