Apple Compressor 3 - Manual (Page 192)

To open the Settings tab and create a new setting
1 Open the Settings tab and click the Add Preset (+) button.
This adds a new setting to the existing list.
2 Name the new setting “MPEG-1 Audio for DVD.”
See Creating a Setting from Scratch for more information.
Stage 2: Making an Elementary Audio Stream
In order for the output media file to be an elementary audio stream, you must turn off
the video setting.
To turn off the video setting
1 Click the Encoder tab and choose MPEG-1 from the File Format pop-up menu.
2 Click the Video button in the MPEG-1 Encoder pane to open the Video tab.
Deselect to disable
the Video tab.
The file extension
changes to .m1a once
the Video tab is disabled.
3 Deselect the Enabled checkbox.
This ensures that this preset will only create an elementary audio stream and sets the file
extension to .m1a.
Stage 3: Configuring the Audio Settings
Use the following settings to create an MPEG-1 audio file for DVD.
To open the Audio tab and configure the Audio settings for DVD
1 Click the Audio button in the MPEG-1 Encoder pane to open the Audio tab.
192 Chapter 17 Creating MPEG-1 Output Files