Apple DVD Studio Pro 4 - Manual (Page 92)

Note: HD projects can use any supported audio format and do not require specific ones
to be present.
DVD Studio Pro verifies your project during the build process to ensure it is DVD-compliant.
The build log shows any issues that are found; however, the build will continue and you
can write your project to disc.
DVD Audio Source Settings Summary
Following is a summary of the required settings for MPEG and other audio sources that
can be used with DVD Studio Pro.
Note: All assets within a project must use the same video standard (all NTSC or all PAL).
For the other settings, such as encoding format, resolution, and bit rates, you can mix
assets with different settings.
DVD Audio Settings for SD Projects
The following settings work with SD projects. These same settings can also be used in
HD projects.
Bit Rates
The audio bit rate depends on the format and quality level you need (higher bit rates
provide better quality, but reduce the bit rate you can use with the video).
• MPEG-1 Layer 2 Audio: 64 to 384 kbps (192 kbps and 224 kbps are typical.)
• Dolby Digital AC-3: 64 to 448 kbps (192 kbps, 224 kbps, and 448 kbps [for 5.1] are typical.)
• DTS ES: 754.5 kbps or 1509.75 kbps
• Stereo PCM @ 16 Bits/48 kHz: 1536 kbps
• Stereo PCM @ 24 Bits/96 kHz: 4608 kbps
Audio Sample Rate
There are two supported audio sample rates:
• 16 bits or 24 bits
• 48 kHz or 96 kHz
DVD Audio Settings for HD Projects
The following settings work with HD projects.
Bit Rates
The audio bit rate depends on the format and quality level you need (higher bit rates
provide better quality, but reduce the bit rate you can use with the video).
• MPEG-1 Layer 2 Audio: 64 to 384 kbps (192 kbps and 224 kbps are typical.)
• Dolby Digital AC-3: 64 to 448 kbps (192 kbps, 224 kbps, and 448 kbps [for 5.1] are typical.)
92 Chapter 5 Preparing Audio Assets