by Gepetto » Fri Aug 11, 2006 8:33 am
Keyframes control the intensity of an effect. So you'd select the first and last frames of the 1-second part you want and set the efect parameters you want, then select the first and last frames of the remaining parts (before and after the part you just edited) and set the parameters so that the effect does nothing.
Personally, I prefer using the razor tool. The end result is the same, and it's much easier to do.
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