Apple DVD Studio Pro 4 - Manual (Page 198)

The current encoding settings are applied to assets as soon as they are imported, whether
you choose to start encoding them right away or wait to encode them when you build
your project. Changes you make to the Encoding preferences only affect assets you import
from then on. See
Verifying and Changing Encoding Settings for more information.
How the Encoded Files Are Named
When you import QuickTime video assets into DVD Studio Pro, the integrated MPEG
encoder names the encoded files as follows:
• The first half is the complete original filename, including its extension.
• The second half has three parts—the video standard (NTSC or PAL), the encoding bit
rate (shown as a four-digit number), and the “.m2v” extension.
For example, if you import an asset named “Main Program.mov,” use the NTSC standard
and a bit rate of 5.5 Mbps, the MPEG-encoded filename will be “Main
Program.mov_NTSC_5500.m2v.”
Audio files created by the embedded AIFF encoder use the original filename with an
added “.aiff” extension.
See Using the Integrated MPEG Encoder for more information on the integrated MPEG
encoder.
Should You Remove the Original QuickTime Files?
When you import motion assets that are not DVD-compliant, the integrated MPEG and
AIFF encoders create the files (video and audio) required by the DVD-Video specification.
To free up hard disk space, you may decide to remove the original files.
Even after the encoders have created the new DVD-compliant files, DVD Studio Pro
continues to keep track of the original files. The advantage of this is that you can reencode
the files if you decide later to use a different bit rate or encoding mode. For example, you
might find that, after the initial encoding, the MPEG-2 video looks great but is a larger
file than you planned for. You can decide to re-encode using a lower bit rate and use the
slower but higher quality two-pass VBR option.
Additionally, if you convert an SD project to an HD project, HD assets imported as
QuickTime files can be encoded to HD MPEG-2.
If you decide to remove the original file, DVD Studio Pro notices it is missing and presents
you with the Missing Files window. If you then click “Replace with encoded file,” the
original file will no longer be associated with the project, and DVD Studio Pro will no
longer try to find it. See
Missing or Renamed Assets for more information. You also will
no longer be able to re-encode the asset.
198 Chapter 11 Importing and Managing Assets