Radio Waves
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The solution is to Pre-Compose the layer by pressing Command+Shift+C on the Mac or Control+Shift+C on the PC. Name the new composition Radio Waves Comp. Make sure you have Move All Attributes to New Composition selected.
Since the Radio Wave effect is now technically in another composition, we can now apply a mask to the layer. Using the Oval Mask Tool, create a mask that is roughly 80 pixels in diameter.[an error occurred while processing this directive]With the Radio Waves Comp layer selected in the Timeline press the F key to access the Mask Feather properties for the layer. Feather the mask until you have something that closely resembles the following figure. A value of 90 does a pretty good job.
If you move back to the beginning of the Timeline you’ll quickly discover that the very cool background you have created doesn’t begin looking like your background until about 10 seconds into the composition. Again, this is just one of the problems with Radio Waves, but one that can be corrected.
If you render out only a section of the composition (from 10:00 – 19:29 seconds), you will have a looping animation that you can drop into any project.
| The final looping background. |
The only thing left to do is to then add your wiggling text created in the last After Effects exercise, and you’ve got a clever interstitial to tell the kiddies what is coming up next.
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| Click image to view final animation. |
When not working deep in the labs of the DMN Central Division testing the latest and greatest software/hardware products Stephen Schleicher can be found at the local university teaching a few courses on video and web production. He can be reached at schleicher@mindspring.com. You can also visit him on the web at www.mindspring.com/~schleicher
Source: Digital Media Online, Inc.
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