Track the masked object automatically

  1. On the first frame of the track, apply a mask on the target object and grade it. 

    For instructions, see Apply a mask.

  2. In the Mask panel, click the Track Object button. 

    The button is on the lower-right side of the Mask panel. You might need to scroll the panel down to see it.

The mask automatically tracks the target object through the shot.

See the next section if the following applies:

  • The mask can't follow the object after clicking the Track Object button
  • You want the tracking to begin or end later in the shot

Control the movement of a mask manually

Use keyframes to manually control the position of a mask over time. A keyframe marks the point in time where you specify the shape or position of the mask. You typically use at least two keyframes—one for the position at the beginning of the change, and one for the new position at the end of the change. SpeedGrade animates the transition between the keyframes. For more information, see Work with keyframes.

Keyframes are useful when the target object cannot be followed automatically. You can also use keyframes to change the shape and feather of a mask over time.

  1. In the Mask panel, do the following:

    1. Move the playhead to the position on the timeline where you want the mask to start tracking the object.
    2. Click the Record Keyframe button to insert a keyframe.
    Record Keyframe button
    Record keyframe button

    Note:

    You don’t have to insert a starting keyframe if you want the mask to track the target object from the first frame of the track. SpeedGrade adds a keyframe to the first frame as soon as you add a grading clip.

  2. Apply a mask over the target object at the keyframe, and then grade the mask in the Look panel.

    For instructions, see Apply a mask.

    Note:

    If you want the mask to track the object automatically from that point forward in the shot, click the Track Object button on the lower-right side of the Mask panel.

  3. Insert a second keyframe in the timeline as follows:

    1. Switch to the Mask panel and move the playhead to the second position on the timeline where you want the movement of the mask to end.
    2. Click Record Keyframe.
  4. Reposition the mask over the target object at the second keyframe.

  5. To create a dissolve between the two keyframes, click the Record Keyframe button a second time on the second position.

    SpeedGrade indicates the dissolve with an arrow on the track between the two positions.

    Dissolve arrow
  6. If necessary, add more keyframes and adjust the position of the mask at each keyframe.

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