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Flash > Flash - Pg. 171

Slow Motion, Fast Motion Slow motion is extremely effective when you're going for an emotional, nostalgic, warm feeling, especially when you delete the original soundtrack and replace it with music (see Chapter 8). On the more pragmatic side, it's also useful when analyzing your tennis swing, golf stroke, or sleight-of-hand technique. Fast motion is generally useful only for comic effects--kids wrasslin' on the living- room foor is a sure winner--but can also help with time-lapse effects, as described on the facing page. To produce one of these effects, use the Speed slider at the bottom of the Fast/Slow/ Reverse effect panel. You can drag this slider to the left or right to make the clip play faster or slower. This slider has been enhanced in one very important way since its iMovie 4 incarna- tion: you're no longer limited to positioning the slider handle directly on the slider notches. That is, you're no longer obligated to make your footage play exactly two, three, four, or fve times faster or slower. Now you can make a clip play just slightly faster by parking the little blue handle between the slider notches. When you adjust this slider and click Apply, the clip's blue bar grows or shrinks in the timeline to indicate its new duration. iMovie also speeds up and slows down the sound to match the video. Dialogue in sped-up clips takes on an "Alvin and the Chipmunks" quality, as though you're fast-forwarding through a tape; slowed-down clips sound like the dying computer HAL in 2001: A Space Odyssey. Tip: If the distortion of slow- or fast-motion audio bothers you, you may fnd it wise to split the audio from the video before applying a slow- or fast-motion effect, so that the sound will be unaffected (see page 239). Of course, the sound will no longer match the length of the video clip, but you may be able to solve this by cropping some of the audio or video. Effects: The iMovie Catalog Flash This effect simulates fash bulbs going off. You won't have much call for this effect in everyday flmmaking; but when that day arrives that you're trying to depict a movie star arriving at opening night--or somebody getting electrocuted--iMovie stands ready. ·Count(One--Max). This slider controls how many fashes will go off in the scene. (The maximum number depends on your Speed slider setting and the length of the clip, but the most you'll get is about one every seven frames, or about four per second.) ·Brightness(Min--Max). Controls the intensity of each fash. For true fashbulb effects, you'll want the slider at, or close to, its Max. For storm lightning or nuclear- bomb-watching effects, use lower settings. ·Speed(Fast--Slow).Governs how far apart the fashes appear. chapter6:transitionsandeffects 171