Media Server 25.4
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# 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.
GPUDeviceID | The device ID of the GPU to use.
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

The following table describes the tracks that are generated by this engine. The Output 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).

Output track | Description | Output
--- | --- | ---
`Data` | Contains one record, describing the analysis results, for each input record. | No
`DataWithSource` | The same as the `Data` track, but each record also includes the source frame. | No
`Result` | Contains one record, describing the analysis results, for each detected face. | Yes
`ResultWithSource` | The same as the `Result` track, but each record also includes the best source frame. | No
`SegmentedResult` | (Available only when processing video). The same as the `Result` track, except the duration of each record is limited by the parameter SegmentDuration. If a result exceeds the specified duration, Media Server begins a new record with the same ID. | Yes
`SegmentedResultWithSource` | (Available only when processing video). The same as the `ResultWithSource` track, except the duration of each record is limited by the parameter SegmentDuration. If a result exceeds the specified duration, Media Server begins a new record with the same ID. | 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.

For more information about the output from this analysis engine, see Face Demographics Results or use the action GetExampleRecord.

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Version 25.4 | Last updated October 2025

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Product: Knowledge Discovery Media Server 25.4

Topic Title: Face Demographics