Friday, May 3, 2013

How to Replace a Face on a Body in Videos

1. Open Adobe After Effects. Hit the "Close" button when the Welcome Screen pops up.

2. Right-click in the "Project" window and select "Import: File."

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3. Navigate to where the file is stored using the Windows Explorer or the MacOS Finder. Hit the "Open" button once the video of the body and the picture or video of the face is selected.

4. Drag the video file to the "Create New Composition" button, located at the bottom of the "Project" window. The button is an icon that contains a circle, square and triangle inside a filmstrip.

5. Drag the image of the face to the "Composition" window located at the bottom of the screen. Make sure the face is higher in order than the body. Double-click the face media file.

6. Cut out the face using the "Pen Tool." Simply click points around the face as roughly or exactly as needed. When the last point is connected, the face should be cut out with a background of black.

7. Click the "Composition" tab at the top of the screen to bring back the composition monitor.

8. Right-click the cut-out face and select "Transform: Scale." Scale up or down so that the face matches the body.

9. Pull out the "Tracker" tab at the right side of Adobe After Effects. Under "Motion Source" select the video file with the body.

10. Click the "Track Motion" button. Drag the "Track Point" box over the head to be replaced. Make sure the X is over the center of the head. If necessary, increase the box size to match the head size.

11. Click the "Analyze Forward" button, which is shaped like a standard play button. This process may be somewhat slow, depending on the computer and video size. HD video will take much longer than Standard Definition.

12. Hit the "Edit Target" button to select the media file containing the face. Then hit the "Apply" button to link the motion-tracking data to the face.

13. Check the end result by creating a ram preview. This can be activated either by pushing the "Play" button in the "Preview" tab, or by hitting the "0" key on a standard number keypad.

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