Creative Effects > Tracking and Stabilizing > Working with Trackers >

# Working with Multiple Trackers

You can change a parameter for all active trackers at once. For example, you can change the dimensions of the tracker box for all trackers or set Fixed to off for all trackers. It can be useful to hide all but a selected tracker if you want to edit its tracking path.

(a) Tracker Selection box

Choose: | To affect:
--- | ---
Selected | Only the selected tracker and show all trackers in the image window.
Solo | Only the selected tracker and hide all other trackers.
Gang | All the active trackers, except when changing the colour of the trackers.

Locating a Tracker or a Keyframe

To find the number of a tracker, click any part of its tracking path in the image window. To find the frame number associated with a particular keyframe, click the keyframe. The timeline moves to the corresponding frame.

(a) When you select a tracking path, the tracker number appears here.

Locating a Shift Channel

Use the Expand/Collapse button to locate a Shift channel quickly.

To locate a Shift channel:

1. Select Gang in the Tracker Selection box.

   You can now change a parameter for all active trackers at once.

2. Click on the tracking path in the image window.
3. Toggle the Expand/Collapse button to Expand.
4. Click Animation to display the Channel Editor.
5. Scroll up or down to display the Shift folder.

   The Shift curve of the tracker appears in the Channel Editor.

Speeding Up the Analysis

To speed up the analysis, disable the Icons and Path buttons in the Setup menu before starting. This turns off the display of the tracker and reference boxes, as well as the tracking path. Re-enable the buttons to fine-tune the analysis.