# MP2 Export Options

From Audacity Development Manual
MP2 is a compressed, lossy audio format. It is mainly used in broadcasting and sometimes as the format for DVD soundtracks.

  Accessed by: File > Export Audio then choosing MP2 from the Format dropdown menu.

## MP2 export options

### Channels

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
- 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.
  - Selecting this and clicking on the Configure button causes the Advanced Mixing Options dialog to appear. For details please see Advanced Mixing Options.

### 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 16 kbps to 384 kbps. The default of 160 kbps gives about the same quality as the default 128 kbps MP3 encoding, but a larger file. Increasing the bit rate will further increase the quality and the file size. At its highest bit rates, MP2 is usually considered to have slightly higher quality and greater error resilience than MP3, but again at the cost of a larger file size.