ADOBE PREMIERE PRO 2.0
User Guide
392
About MPEG
MPEG is the name of a family of file formats specified by the ISO/IEC Moving Picture Experts Group. MPEG
formats include several compression methods. It requires significant processing power and time to generate these
keyframe-based file formats from other video formats.
MPEG-1 Generally used for the Internet and CD-ROM, providing picture quality comparable with VHS quality at
quarter-screen frame size.
MPEG-2 Delivers higher quality video than MPEG-1. A specific form of MPEG-2 was chosen as the standard for
compressing video for DVD video. This is called DVD-compliant MPEG-2.
MPEG-4 Includes many of the features of MPEG-1 and MPEG-2, and adds support for interactivity. It offers better
compression and reduces file size while maintaining the same perceptual quality level as MPEG-2. MPEG-4 part 10
is the HD DVD standard.
After Effects and Adobe Premiere Pro offer a number of MPEG presets to optimize the output quality for various
project types. If you’re experienced with MPEG encoding, you can further fine-tune projects for specific playback
situations by customizing the presets in the Export Settings dialog box.
In After Effects, you can create MPEG-2 and MPEG-2 DVD video. In Adobe Premiere Pro, you can create various
types of MPEG video by using the File > Export > Adobe Media Encoder command or export directly to DVD-
compliant video by using the Export To DVD command (any video you export to DVD is automatically transcoded
to MPEG-2 if it isn’t already in that format).
After Effects and Adobe Premiere Pro add metadata to MPEG-2 files that Adobe Encore DVD can read for aid in
authoring and building DVDs. This metadata contains information that enables Adobe Encore DVD to multiplex
audio and video, automatically generate DVD chapter points, and generate Edit Original information. For more infor-
mation, see Adobe Encore DVD Help.
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.
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