Apple Compressor (4.0) User Manual
Page 129
Chapter 5
Custom settings and output formats
129
Stage 3: Add a QuickTime audio codec
The Audio Settings button in the QuickTime Movie Encoder pane provides access to the
currently installed QuickTime audio codecs.
All codecs are compatible with QuickTime, but if you intend to play back the output media file
using QuickTime Player, the following delivery codecs are recommended:
•
AAC
•
IMA 4:1
For more information about audio codecs, see
on page 123.
If a particular audio setting cannot be changed, it remains dimmed. Most audio codecs allow you
to make additional settings. If this is the case, various buttons and controls become available.
1
Click the Audio Settings button in the QuickTime Movie Encoder or AIFF Encoder pane of
the Inspector.
2
In the Sound Settings dialog, choose the audio codec you want to add from the Format
pop-up menu.
Rate field
and pop-up menu
Format pop-up menu
Show Advanced
Settings checkbox
3
Choose a channel output (such as mono, stereo, or multichannel output, depending on the
codec) from the Channels pop-up menu.
4
Choose a sample rate for your media files using the Rate field and pop-up menu.
The higher the sample rate, the higher the audio quality but the larger the file. Downloading a
larger file takes longer and requires more bandwidth.
5
To see settings for the codec you chose, select the Show Advanced Settings checkbox (if it’s available).
For information about the additional options for a codec, contact the codec’s manufacturer.
6
To save your changes, click OK.