In both one-point and two-point tracking, you select the object that follows the pattern on the Action media by assigning the tracking data to its axis in Action.
To perform one-point or two-point tracking in Action Axis:
- From the Action Axis menu's Tracking tab, select the media to be stabilized from the Use Media field (to stabilize the Back media, select 0).
- In the Axis menu for the selected media, make sure that the motion path is disabled (Path button).
- In the Tracking tab, enable Rotation, Scale or both, as needed. The choice depends on the movement of the object to track and on the camera movement in the clip.
- In the Tracking Mode box, select Track and click the Enter Tracker button.
The media is automatically loaded into the Stabilizer and the Stabilizer menu appears.
- In the Stabilizer menu, enable Context to use the Action scene as the reference.
- Position the tracker(s) over the pattern(s) that you want to track, and click Analyze to generate the tracking data. For one-point tracking, you use only one tracker to generate position information. For two-point tracking, you use a second tracker to generate rotation and/or scaling information. The Stabilizer obtains this information by comparing the position of Tracker2 to that of Tracker1.
- Tracker1 follows the horizontal and vertical translation of the reference point. You should position Tracker1 over a point on the pattern that you want to track.
Note: The position of the axis is synced with the position of Tracker1. Therefore, any existing animation on the Axis is overwritten by the tracking data.
- Tracker2 tracks the rotation and/or the change in size of the pattern. In the first frame, the rotation is always 0 and the scaling factor is always 100%. In subsequent frames, a rotation and/or scaling factor is added if the relative position of the two trackers changes. You should position Tracker2 over a point that represents the rotation or change in size of the pattern.
Note: You can fine-tune the tracking data if necessary. See Tracking Difficult Shots and Correcting Errors. - Tracker1 follows the horizontal and vertical translation of the reference point. You should position Tracker1 over a point on the pattern that you want to track.
- Once you are satisfied with the tracking, click Return.
The Axis menu in Action reappears. The tracking data is applied to the Axis media.