Linking to tracking data, Removing jitter on a camera move – Apple Shake 4 User Manual
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Chapter 25
Image Tracking, Stabilization, and SmoothCam
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After the track curve is smoothed:
Linking to Tracking Data
Referencing track point data works similarly to referencing any other parameter within
Shake. The twist here is that since you can rename the track point, you can change the
name of the referred parameter. For example, if you have a Tracker node named
Tracker1, and a track point set to its default name “track1,” do one of the following:
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To reference the X track data, use: Tracker1.track1X.
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If you change the name of the track point to “lowerleft,” then the reference is changed
to Tracker1.lowerleftX.
This applies to the Y data as well.
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You can also use Link Track (in the trackName text field shorcut menu) to link one track
to another track, simultaneously linking the X and Y curves.
Removing Jitter on a Camera Move
The following technique is useful when the clip contains a camera move that you want
to preserve, but which has a lot of jitter. You need to stabilize the shot, but only by the
small amount that is the actual jitter. To do this, you can combine the techniques
mentioned above.
Note: The SmoothCam node was specifically developed to smooth out or lock irregular
camera movement within a shot in a much simpler way. For more information, see “
To remove jitter and preserve the camera move:
1
Track the plate with a Tracker node (for this example, called Tracker1).
2
In the Tracker1 parameters, click Add to create a second tracker in the same node.
3
Load track1 into track2 using Load Track (right-click in the track2 text field).
4
Right-click track2, then choose Smooth Track from the shortcut menu.
5
Enter a smooth value, click Apply, then click Done.