ADOBE AFTER EFFECTS 7.0
User Guide
616
Adobe Media Encoder Audio options
The options available in the Export Settings dialog box Audio tab depend on the format you specify in the Export
Settings area. Some common audio options include the following:
Codec
Specifies the codec used to encode the audio:
•
SurCode for Dolby Digital 5.1
A high-quality encoding format developed for multichannel digital sound and the
most common encoder for DVD-video.
•
MainConcept MPEG Audio
A high-quality encoder developed by MainConcept media technologies, and included
with Adobe Premiere Pro and Adobe After Effects.
•
PCM (pulse-code modulation) Audio
A lossless audio format sampled at 48 kHz. Files of this format tend to be
larger than files of the other formats.
Audio Format
Determines the audio type.
Bit Rate
Specifies the output bitrate of the audio. Generally, higher bit rates increase both quality and file size. This
option is available for Dolby
®
Digital, MainConcept MPEG, and some Windows Media audio codecs.
Note:
Options not documented here are specific to the selected format. For detailed information, consult the specifica-
tions for the selected format.
Adobe Media Encoder Alternates and Audiences options
Specifying a streaming media codec in RealMedia or Windows Media formats enables Audiences options, while
QuickTime streaming media codecs enable a similar set of Alternates options. Both allow you to output variations
of a movie suited to different network speeds. The player software associated with the format detects and selects the
most appropriate version to ensure smooth playback. For example, Windows Media includes Audiences such as
Dial-up Modems (56 Kbps) and Broadband Or Cable Modem/DSL (384 Kbps). Whereas QuickTime generates
individual movies suited for each export type, RealMedia and Windows Media generate a single movie that stores
the variations.
Note:
Some codec-specific settings are not documented here. For more detailed information regarding a particular codec,
check the documentation provided by its developer.
To add Alternates or Audiences
1
In the Adobe Media Encoder Export Settings dialog box, specify a format that supports streaming media
(QuickTime, RealMedia, or Windows Media) and choose a streaming option from the Preset menu.
2
Select the Filters, Video, Audio, and Others tabs and specify the options you want.
3
Do either of the following:
•
For RealMedia or Windows Media output, select the Audiences pane and specify the options you want.
•
For QuickTime output, select the Alternates pane and specify the options you want.
4
With any pane selected, choose Add/Remove Audiences (or Add/Remove Alternates) from the panel menu (click
the arrow button in the upper right of the panel).
5
In the Select Audiences (or Select Alternates) dialog box, click Add.
6
In the System Audiences (or System Alternates) dialog box, check the options appropriate for your intended
viewers, and click OK.
7
Click OK to close the Select Audiences (or Select Alternates) dialog box.
Summary of Contents for AFTER EFFECTS 7.0
Page 1: ...Chapter 1 User Guide...
