Aside from sampling rate and compression, there are several ways to use sound efficiently in a movie and keep file size down:
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Set the in and out point to prevent silent areas from being stored in the Shockwave Flash file and reduce the size of the sound. |
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Get more out of the same sounds by applying different effects for sounds at different keyframes (such as volume envelopes, looping, and in/out points). You can get a number of sound effects using only one sound file. |
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Use looping to extract the common part of the sound and play it repeatedly. Loop short sounds for background music. |