# Configuring a job for pre-mixed audio descriptions
Configuring pre-mixed audio descriptions

If you have an input that already has pre-mixed audio descriptions, and does not contain an *audio description audio signal* or an *audio description data stream*, set **Audio description broadcaster mix** to **Broadcaster mixed AD**. 

When you do, MediaConvert writes metadata in your output that signals to downstream systems that it contains broadcaster mixed audio descriptions.

The following describes how to configure your job settings to write metadata in your output signalling it contains pre-mixed audio descriptions.

## MediaConvert console


To write broadcaster mixed audio description metadata in your output by using the MediaConvert console:

1. Open the [Create job](https://console.aws.amazon.com/mediaconvert/home#/jobs/create) page in the MediaConvert console.

1. Add an input that has pre-mixed audio description.

1. Add an output with at least one audio track.

1. In the output audio track, set **Audio description broadcaster mix** to **Broadcaster mixed AD**.

1. (Optional) If you enable Manual audio remixing, keep **Audio description audio channel** and **Audio description data channel** blank, as these channels will not be present in your input.

## API, SDK, or AWS Command Line Interface (AWS CLI)


The following is an excerpt of a job settings JSON that specifies pre-mixed audio descriptions for a stereo output:

```
{
  "Settings": {
    "Inputs": [],
    "OutputGroups": [
      {
        "Name": "File Group",
        "OutputGroupSettings": {
          "Type": "FILE_GROUP_SETTINGS",
          "FileGroupSettings": {}
        },
        "Outputs": [
          {
            "VideoDescription": {},
            "AudioDescriptions": [
              {
                "CodecSettings": {
                  "Codec": "AAC",
                  "AacSettings": {
                    "Bitrate": 96000,
                    "CodingMode": "CODING_MODE_2_0",
                    "SampleRate": 48000,
                    "AudioDescriptionBroadcasterMix": "BROADCASTER_MIXED_AD"
                  }
                }
              }
            ],
            "ContainerSettings": {
              "Container": "MP4",
              "Mp4Settings": {}
            }
          }
        ]
      }
    ]
  }
}
```