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Advanced Operations
2D DPM Edge Pinning
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it to select the exact portion of the source video to display or, conversely, you can crop the
image and then pin the edges by stretching the image to the target location.
For example, your source video could contain two people, but you may want to fly the
image of only one person. In this case, you could build an effect, turn on Edge Pinning, use
crop mode, and leave the edges at the defaults. If you now move the crops maintaining the
original aspect ratio (4x3 or 16x9) you can position these crops so that only the desired
person is shown. If the person or the camera moves, you can adjust the user crops to keep
the person centered between the edges of the crops. This will result in the person being
centered in the video and the effect can be flown around the screen.
Edge Pinned Cropped Object
Note: Toggling Edge Pinning on and off will reset the edges to the
current crop values and change the pinned edges.
Edge Pinning allows you to move the edges of a 2D DPM source image relative to the
background. Edge Pinning is keyframeable, with all standard path control functions. Edge
Pinning is accomplished by distorting the source to fit into its newly defined edges. Edge
Pinning does not change the location of the axis of rotation or spin of the source image.
Edge Pinning example: during a basketball game, a camera points at a shot clock. The 2D
DPM uses Edge Pinning to build a box to contain the clock and crop adjustments place the
clock exactly in the box but the camera is accidentally moved and the content of the box no
longer shows the entire shot clock. Using Pan and Scan, you can move the camera content
to be shown correctly without moving the edges of the box.
Crop enables/disables and crop edge parameter changes are reflected across 2DPM menu
tabs. For example, if crops are enabled in the Transform, Keyers 2DPM menu tab and the top
crop edge parameter was changed, the effect would be mirrored in the Pinning, 2DPM
menu tab and vice versa.
Create an Edge Pinning Effect (Example)
In this example of a shot clock box effect, used in a sporting event, a 2D DPM cropped box
effect will be created and the edges of the box’s video source pinned to the cropped edges.
Then, using pan and scan, the video source will be repositioned inside the 2D DPM box