[doyal gudgel] "No, I looked for "Keyframes in help but it didn't help me whatever it said."
OK, let me use an analogy that my good friend Douglas Spotted Eagle always uses: Keyframes are like appointments on your calendar; e.g., at 10:00 you need to pick up the dry cleaning, at 11:00 you need to pick up the kids, etc. They are points in time that something should occur.
You want to tell the Swirl FX that at 00:00:00;00 you want the Amount to be 1.0 (full swirl) and at 00:00:01;00 (one second later) you want the Amount to be 0.0 (no swirl).
You do this by setting keyframes on the little timeline at the bottom of the FX window. In the screen shot below, I'm using Movie Studio Platinum 12 so your Movie Studio may look different but it will behave the same. Since the first keyframe is always there, all you need to do is create a second one. Move the little timeline cursor out to the 1 or 2 second mark and change the value of Amount and a new keyframe will automatically be created at that point with the new value. Like this:
That will make the swirl... unswirl.
~jr
http://www.johnrofrano.com
http://www.vasst.com
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