Examples of Averaging Source Clips

Effects > Processing and Formatting Commands > Simulating the Motion Blur of a Moving Object >

The following examples demonstrate using the Average command to process a source clip that is six frames long with the Average Over value set to 4. The first result clip shows a uniform average using past frames; the second result clip shows a weighted average also using past frames. The frames in the result clips are generated as follows:

Frame 1 is the same as source frame 1. Since there are no clips preceding the first frame, the first frame in the generated clip is always the same as the first frame in the source clip.
Frame 2 is the result of averaging source frames 1 and 2.
Frame 3 is the result of averaging source frames 1, 2, and 3.
Frame 4 is the result of averaging source frames 1, 2, 3, and 4.
Frame 5 is the result of averaging source frames 2, 3, 4, and 5.
Frame 6 is the result of averaging source frames 3, 4, 5, and 6.

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To simulate the motion blur of a moving object:

Click Average in the Processing menu.
The Average menu appears.

(a) Average Over field (b) Weighted and Uniform box (c) Frames box
Enter the number of frames for the average in the Average Over field. Averaging over a large number of frames increases the length of the blur as well as the transparency of the superimposed images.
Select an option from the Weighted and Uniform box to use in the calculation. Select Weighted Average to give more weight to frames that are closer to the current frame. Select Uniform Average to give equal weight to all frames used in the calculation.
Select an option from the Frames box. Select Past Frames to use only preceding frames. Select Past and Future Frames to use frames from both sides of the current frame.
Select the source clip.
Select the destination reel.
The motion blur is processed and the result clip appears on the destination reel.

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