AWS SDK Version 3 for .NET
API Reference

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Gets the face search results for Amazon Rekognition Video face search started by . The search returns faces in a collection that match the faces of persons detected in a video. It also includes the time(s) that faces are matched in the video.

Face search in a video is an asynchronous operation. You start face search by calling to which returns a job identifier (JobId). When the search operation finishes, Amazon Rekognition Video publishes a completion status to the Amazon Simple Notification Service topic registered in the initial call to StartFaceSearch. To get the search results, first check that the status value published to the Amazon SNS topic is SUCCEEDED. If so, call GetFaceSearch and pass the job identifier (JobId) from the initial call to StartFaceSearch.

For more information, see Searching Faces in a Collection in the Amazon Rekognition Developer Guide.

The search results are retured in an array, Persons, of objects. EachPersonMatch element contains details about the matching faces in the input collection, person information (facial attributes, bounding boxes, and person identifer) for the matched person, and the time the person was matched in the video.

GetFaceSearch only returns the default facial attributes (BoundingBox, Confidence, Landmarks, Pose, and Quality). The other facial attributes listed in the Face object of the following response syntax are not returned. For more information, see FaceDetail in the Amazon Rekognition Developer Guide.

By default, the Persons array is sorted by the time, in milliseconds from the start of the video, persons are matched. You can also sort by persons by specifying INDEX for the SORTBY input parameter.


For .NET Core and PCL this operation is only available in asynchronous form. Please refer to GetFaceSearchAsync.

Namespace: Amazon.Rekognition
Assembly: AWSSDK.Rekognition.dll
Version: 3.x.y.z


public virtual GetFaceSearchResponse GetFaceSearch(
         GetFaceSearchRequest request
Type: Amazon.Rekognition.Model.GetFaceSearchRequest

Container for the necessary parameters to execute the GetFaceSearch service method.

Return Value
The response from the GetFaceSearch service method, as returned by Rekognition.


AccessDeniedException You are not authorized to perform the action.
InternalServerErrorException Amazon Rekognition experienced a service issue. Try your call again.
InvalidPaginationTokenException Pagination token in the request is not valid.
InvalidParameterException Input parameter violated a constraint. Validate your parameter before calling the API operation again.
ProvisionedThroughputExceededException The number of requests exceeded your throughput limit. If you want to increase this limit, contact Amazon Rekognition.
ResourceNotFoundException The collection specified in the request cannot be found.
ThrottlingException Amazon Rekognition is temporarily unable to process the request. Try your call again.

Version Information

.NET Framework:
Supported in: 4.5, 4.0, 3.5

Portable Class Library:
Supported in: Windows Store Apps
Supported in: Windows Phone 8.1
Supported in: Xamarin Android
Supported in: Xamarin iOS (Unified)
Supported in: Xamarin.Forms

See Also