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| Tutorial |
Compressing sounds for export
You can select compression options for individual event sounds and export the sounds with those
settings. You can also select compression options for individual stream sounds. However, all
stream sounds in a movie are exported as a single stream file, using the highest setting of all those
applied to individual stream sounds. This includes stream sounds in video objects.
You choose compression options for individual sounds in the Sound Properties dialog box. You
can also choose global compression settings for event sounds or stream sounds in the Publish
Settings dialog box. These global settings are applied to individual event sounds or all stream
sounds if you do not select compression settings for the sounds in the Sound Properties dialog
box.
You can also override export settings specified in the Sound Properties dialog box by selecting
Override Sound Settings in the Publish Settings dialog box. This option is useful if you want to
create a larger high-fidelity audio movie for local use and a smaller low-fidelity version for the
Web.
The sampling rate and degree of compression make a significant difference in the quality and size
of sounds in exported movies. The more you compress a sound and the lower the sampling rate,
the smaller the size and the lower the quality. You should experiment to find the optimal balance
between sound quality and file size.
When working with imported MP3 files, you can choose to export the files in MP3 format using
the same settings that the file had when imported.
Note: In Windows, you can also export all the sounds from a movie as a WAV file using File > Export Movie.
To set export properties for an individual sound:
1 Do one of the following:
• Double-click the sound’s icon in the Library panel.
• Right-click (Windows) or Control-click (Macintosh) a sound file in the Library panel and
choose Properties from the context menu.
• Select a sound in the Library panel and choose Properties from the options menu in the upper
right corner of the panel.
• Select a sound in the Library panel and click the properties icon at the bottom of the
Library panel.
2 If the sound file has been edited externally, click Update.
3 For Compression, choose Default, ADPCM, MP3, Raw, or Speech. To select options for the
compression format you choose, see the section below corresponding to the selected format.
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