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Reusing Existing Tracking Data
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Reusing Existing Tracking Data
You can reuse tracking data within the same effect. You can also copy and paste tracking data to
another effect, as described in “Copying and Pasting Tracking Data” on page 355.
Trackers that you initially create and map to one effect parameter are available for use in any
other parameter in the effect that can use tracking data. For example, you might create a single
tracker with the default Point A name in the Position parameter category. This tracker is available
for use in other parameters such as Scaling.
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The Tracking parameter and the Position, Scaling, and Rotation parameter categories form two
mutually exclusive groups. You cannot have tracking enabled in both groups at the same time.
For more information, see “Effects and Effect Parameters That Use Tracking Data” on
page 313.
You are less likely to find tracking information useful outside the effect for which you created it
since the information refers specifically to the motion in one particular background clip. No
other background clip is likely to contain exactly the same movement. However, there are some
circumstances in which you might want to move tracking data to a new effect, such as the
following two examples:
• You might want to move tracking data to an additional effect applied over the same
background clip in the sequence. This might be a duplicate use of the background at another
point in the sequence or an extra effect layered above the first (such as a second
Picture-in-Picture effect tied to the same background movement).
• You might want to destabilize a stable shot so that it has a handheld look. To do this, you can
track a segment that does have unsteady camera motion, and then copy the resulting tracking
data to an effect on the segment you want to destabilize.
Copying and Pasting Tracking Data
You can copy one or more trackers and their associated tracking data and then paste those
trackers into another effect. You can also copy one or more trackers and paste them within the
same effect to create two versions of a tracker. This might be useful if you want to make two
different sets of modifications to tracking data and then compare how each set changes the effect.
To copy and paste tracking data into another effect:
1. Enable the trackers you want to copy in the Tracking window.
2. Do one of the following:
t Select Edit > Copy.
t Press Ctrl+C (Windows) or Command+C (Macintosh).