# Face Demographics

The Face Demographics analysis task provides demographic information such as age, gender, and ethnicity for detected faces.

Configuration Parameter | Description
--- | ---
GPUBatchingDuration | The maximum amount of time to wait, before sending a batch of video frames to the GPU for analysis.
GPUNumParallel | The maximum number of video frames to analyze concurrently using the GPU (per CPU thread).
Input | The track that you want to process.
NumParallel | The maximum number of CPU threads to use for analysis.
SegmentDuration | The maximum duration of a record in the `SegmentedResult` or `SegmentedResultWithSource` track.
Type | The analysis engine to use. Set this parameter to `Demographics`.

## Output Tracks

Output track | Type | Description | Output1This column indicates whether the information contained in the track is included by default in the output created by an output task (when you don't set the Input parameter for the output task).
--- | --- | --- | ---
`Data` | DemographicsResult | Contains one record, describing the analysis results, for each input record. | No
`DataWithSource` | DemographicsResultAndImage | The same as the `Data` track, but each record also includes the source frame. | No
`Result` | DemographicsResult | Contains one record, describing the analysis results, for each detected face. | Yes
`ResultWithSource` | DemographicsResultAndImage | The same as the `Result` track, but each record also includes the best source frame. | No
`SegmentedResult` | DemographicsResult | (Available only when processing video). Contains one or more records, describing the analysis results, for each detected face. The maximum duration of records in this track is limited by the parameter SegmentDuration, so multiple records are created with the same ID when a face remains in the scene for longer than this duration. | Yes
`SegmentedResultWithSource` | DemographicsResultAndImage | (Available only when processing video). The same as the `SegmentedResult` track, but each record also includes the best source frame. | No

NOTE: To use the `SegmentedResult` or `SegmentedResultWithSource` tracks, ensure that the input for the face demographics task is the `DataWithSource` track produced by face detection.

DemographicsResult

Field name | Type | Description
--- | --- | ---
id | UUIDData | A universally unique identifier to identify the face
face | FaceData | Information about the detected face
ethnicity | String | The person's ethnicity
age | String | The person's age
gender | String | The person's gender

DemographicsResultAndImage

The same as `DemographicsResult` records, with the following additional fields.

Field name | Type | Description
--- | --- | ---
image | ImageData | The source image

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