Apple Compressor 2 - Manual (Page 182)

182 Chapter 13 Creating QuickTime Export Component, AIFF, and TIFF Files
Choosing an Audio Codec
AAC is a good general purpose audio delivery codec and it is compatible with a wide
variety of playback devices. For low-bandwidth audio on faster computers, the
QDesign Music codec (QDMC) is good for most material, while Qualcomm PureVoice is
the best choice for speech-only material. For slower computers, CD-ROM, and kiosk
situations, IMA is a better choice, because it is less computer intensive, thus allowing
the computer to focus on the more challenging video stream.
Configuring AIFF Settings
When you choose the AIFF output file format as your output format, you can only
create audio settings (because it is an audio-only format). If you want to add an audio
codec to your AIFF preset, you need to open the Sound Settings dialog and choose
your audio codec settings from there.
To create an AIFF audio codec setting:
1 In the Settings tab of the Presets window, do one of the following:
 Make sure that the correct setting is selected.
 Create a new setting by choosing AIFF from the “Create a new setting” ( + ) pop-
up menu.
2 Click the Settings button in the AIFF Encoder pane.
The Sound Settings dialog opens.
3 Choose an audio codec from the Format pop-up menu and either accept its defaults or
customize the other audio codec settings (Format, Channels, Rate, and Options, if
available). See “
About the Sound Settings Dialog ” on page 181 for more details.
Note: You can see full details of the current contents of your preset by viewing the
QuickTime AIFF Summary table in the Encoder pane.
4 Click OK to save your settings and close this dialog.
Choose an audio codec from
the Format pop-up menu.