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# GetConfigKeys

Lists information about the parameters that you can use to configure Media Server engines.

Parameter | Description | Required
--- | --- | ---
`EngineType` | The engine to return information for. This parameter accepts the same values as the `Type` configuration parameter. If you omit this parameter, Media Server returns information for all engines. | No

## Example

The following example returns information about the parameters that configure audio categorization:

    http://localhost:14000/action=GetConfigKeys&EngineType=AudioCategorize

## Response

The following XML is an example response:

    <autnresponse>
      <action>GETCONFIGKEYS</action>
      <response>SUCCESS</response>
      <responsedata>
        <engines>
          <engine>
            <type>AudioCategorize</type>
            <configKeys>
              <key>
                <name>sampleFrequency</name>
                <type>Integer</type>
                <predicate>one of these values: {8000, 16000}</predicate>
                <deprecated>false</deprecated>
                <required>false</required>
                <default>16000</default>
                <description>The sample frequency of the audio to send to the audio service.</description>
              </key>
              <key>
                <name>segmentDuration</name>
                <type>Time Duration</type>
                <predicate>non-negative</predicate>
                <deprecated>false</deprecated>
                <required>false</required>
                <default>30s</default>
                <description>The maximum duration of a record in the SegmentedResult track.</description>
              </key>
              <key>
                <name>Input</name>
                <type>String</type>
                <predicate/>
                <deprecated>false</deprecated>
                <required>false</required>
                <default>Default_Audio</default>
                <description>The audio track to analyze.</description>
              </key>
            </configKeys>
          </engine>
        </engines>
      </responsedata>
    </autnresponse>

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