Adding Sound > Compressing sounds for export > Guidelines for exporting sound in Flash movies |  |

Guidelines for exporting sound in Flash movies

Besides sampling rate and compression, there are several ways to use sound efficiently in a movie and keep file size down:

| Set the in and out points to prevent silent areas from being stored in the Flash file and to reduce the size of the sound.
| Get more out of the same sounds by applying different effects for sounds (such as volume envelopes, looping, and in/out points) at different keyframes. You can get a number of sound effects using only one sound file.
| Loop short sounds for background music.
| Do not set streaming sound to loop.
| When exporting audio in embedded video clips, keep in mind that the audio is exported using the global streaming settings selected in the Publish Settings dialog box.
| Use stream synchronization to keep the animation synchronized to your sound track when you preview your animation in the editor. If your computer is not fast enough to draw the animation frames so that they keep up with your sound track, Flash skips frames.
| When exporting QuickTime movies, use as many sounds and channels as you want without worrying about file size. The sounds are combined into a single sound track when you export as a QuickTime file. The number of sounds you use has no effect on the final file size.