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From iMovie to QuickTime > From iMovie to QuickTime - Pg. 303

iMovie will have to squish the picture accordingly, which may lend a funhouse-mirror distortion effect to your flm. The huge majority of QuickTime movies play in at one of several standard sizes, such as 160 x 120, 240 x 180, or 320 x 240. All of them maintain this 4:3 aspect ratio. Still, there are dozens of other possible sizes that maintain the correct proportions. The Expert Settings Audio Settings At the bottom of the dialog box shown in Figure 12-5 is a second button called Settings. This one lets you specify how--and how much--your soundtrack is compressed in the exported QuickTime movie (see Figure 12-8). Compressor When most people think of codecs--those who've even heard of codecs, that is--they think of video compression. But iMovie offers a choice of audio codecs, too. This pop-up menu lets you specify which one you want to use. Many of them aren't, in fact, appropriate for movie soundtracks. Remember that these codecs are provided by QuickTime, not by iMovie, and that QuickTime is designed to be an all-purpose multimedia format. It's supposed to be just as good at creating pictureless sound fles as it is at creating movies. For best results in most movies, use