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Lesson 6. Station Identification > Editing a motion path

Editing a motion path

Finally, you will place the blimp image and edit the motion path in the Composition window.

  1. Activate the Project window and right-click (Windows) or Control-click (Mac OS) in an open area of the Project window. Choose Import > Footage File, and select the Blimp.ai file in the 06Lesson folder. In the Blimp.ai dialog box, leave Merged Layers selected and click OK.

  2. Set the current-time marker to 08:08, and then drag the Merged/Blimp.ai footage item into the Final Comp window.

  3. With the Merged/Blimp.ai layer selected in the Time Layout window, set the Scale to 20.

  4. In the Composition window, position the blimp off the left side of the screen, with the top of the graphic even with the top of the action-safe zone.

  5. Set an initial Position keyframe in the Time Layout window.

  6. Move the current-time marker to 11:14 and in the Composition window, position the blimp near the center of the screen. Another position keyframe is created.


    Figure .


    You'll edit the movement by using Bezier curves, making the blimp appear to float down into the position.

  7. If necessary, choose 50% from the Magnification menu so you can see the whole motion path.

  8. Locate the direction handle for the first motion keyframe and drag it up to create a gently rising curve (as shown in the following illustration).


    Figure .


  9. Now drag the direction handle for the final motion keyframe down to create a backward S curve.


    Figure .


  10. If the current-time marker is not at 11:14 in the Time Layout window, move it there, and then select the Position keyframe at that time.

  11. Choose Layer > Keyframe Interpolation, and choose Continuous Bezier from the Temporal Interpolation menu. Click OK.

  12. In the Time Layout window, expand the Position outline for the Merged/Blimp.ai layer and drag the ease handles to create a smooth downward motion from the first keyframe to the second. This alters the velocity, so the blimp appears to gradually slow to a stop.


    Figure .


  13. Click the triangle to collapse the Speed graph.

  14. Save the project.


  

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