In the Export Settings dialog box, the options available in the Audio tab depend on the format you’ve specified. Some common audio options include the following:

Codec

Specifies the codec used to encode the audio:

AAC (Advanced Audio Coding)

A high-quality encoding format supported by many mobile devices. This codec is the default for the H.264 format.

SurCode for Dolby Digital 5.1

A high-quality encoding format developed for multichannel digital sound and the most common encoder for DVD‑video. (This codec is available only in Adobe Premiere Pro.)

MainConcept MPEG Audio

A high-quality encoder developed by MainConcept media technologies, and included with Adobe Premiere Pro, After Effects, and Soundbooth.

PCM (pulse-code modulation) Audio

A lossless audio format. 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 bit rate 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 specifications for the selected format.