AC3 Export Options

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AC3 is a compressed audio format developed by Dolby Laboratories, often used in DVD production.
Accessed by: File > Export Audio then choosing AC3 Files (FFmpeg) from the Format dropdown menu.
Export AC3 3-4-0.png
Advice FFmpeg is not shipped with Audacity but you can download it and then export as AC3 by following these instructions.

Audio Options


Sets the number of channels for the exported audio file. There are three options

  • Mono: single channel
  • Stereo: stereo pair with left and right channels - this is the default setting even if you only have mono tracks for exporting
  • Custom mapping: use this to export multi-channel (surround sound) files or to make customized assignments between Audacity tracks and the channels in the exported file.

Sample Rate

Sets the sample rate for the exported file. Default setting is 44100 Hz, which is CD quality.

Bit Rate

Choose a bit rate from 32 kbps to 640 kbps (defaults to 160 kbps). Larger bit rates give higher quality but produce larger files.