Adobe Media Encoder CC User Manual download pdf (Page 55)

Encoding and exporting

Last updated 12/15/2014

For more information about MPEG options, see the relevant MPEG specifications for MPEG-4 (ISO/IEC 14496) and

MPEG-2 (ISO/IEC 13818) and the

Wikipedia website.

Audio export settings

In the Export Settings dialog box, the options available in the Audio tab depend on the format you’ve specified. Options

not documented here are either specific to the selected format or do not require documentation because their names

are self-documenting. For detailed information, consult the specifications for the selected format.

Some audio formats support only uncompressed audio, which has the highest quality but uses more disk space. Some

formats provide only one codec. Others allow you to choose from a list of supported codecs.

Sample Rate Choose a higher rate to increase the frequency at which audio is converted into discrete digital values, or

sampled. Higher sample rates increase audio quality and file size; lower sample rates decrease quality and file size.

Setting the sample rate in the Export Settings dialog box higher than the sample rate of the audio source doesn’t increase

quality. Setting a sample rate different from the sample rate of the source file requires resampling and additional

processing time. You can avoid resampling by capturing audio at the same rate at which you want to export it. (See

Compression tips.)

Channels or Output Channels Specify how many audio channels are in the exported file. If you choose fewer channels

than are in the master track of a sequence or project, Adobe Media Encoder downmixes the audio. The options available

for many formats are Stereo, mono or 5.1.

Sample Size Choose a higher bit depth to increase accuracy of audio samples. Higher bit depth can improve dynamic

range and reduce distortion, especially if you add additional processing, such as filtering or resampling. Higher bit

depths also increase processing time and file size; lower bit rates reduce processing time and file size.

Setting the bit depth in the Export Settings dialog box higher than the bit depth of the source audio doesn’t increase

quality.

Bitrate [Kbps] The output bit rate of the audio. Generally, higher bit rates increase both quality and file size.

Publish settings

Use the Publish tab to upload files to the following destinations:

1 YouTube

2 Vimeo

3 FTP server

4 Your Creative Cloud folder

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Adobe Media Encoder CC User Manual Page 55