Amazon Rekognition
Developer Guide

GetContentModeration

Gets the content moderation analysis results for a Amazon Rekognition Video analysis started by StartContentModeration.

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

For more information, see Working with Stored Videos.

GetContentModeration returns detected content moderation labels, and the time they are detected, in an array, ModerationLabels, of ContentModerationDetection objects.

By default, the moderated labels are returned sorted by time, in milliseconds from the start of the video. You can also sort them by moderated label by specifying NAME for the SortBy input parameter.

Since video analysis can return a large number of results, use the MaxResults parameter to limit the number of labels returned in a single call to GetContentModeration. If there are more results than specified in MaxResults, the value of NextToken in the operation response contains a pagination token for getting the next set of results. To get the next page of results, call GetContentModeration and populate the NextToken request parameter with the value of NextToken returned from the previous call to GetContentModeration.

For more information, see Detecting Unsafe Content.

Request Syntax

{ "JobId": "string", "MaxResults": number, "NextToken": "string", "SortBy": "string" }

Request Parameters

The request accepts the following data in JSON format.

JobId

The identifier for the content moderation job. Use JobId to identify the job in a subsequent call to GetContentModeration.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 64.

Pattern: ^[a-zA-Z0-9-_]+$

Required: Yes

MaxResults

Maximum number of results to return per paginated call. The largest value you can specify is 1000. If you specify a value greater than 1000, a maximum of 1000 results is returned. The default value is 1000.

Type: Integer

Valid Range: Minimum value of 1.

Required: No

NextToken

If the previous response was incomplete (because there is more data to retrieve), Amazon Rekognition returns a pagination token in the response. You can use this pagination token to retrieve the next set of content moderation labels.

Type: String

Length Constraints: Maximum length of 255.

Required: No

SortBy

Sort to use for elements in the ModerationLabelDetections array. Use TIMESTAMP to sort array elements by the time labels are detected. Use NAME to alphabetically group elements for a label together. Within each label group, the array element are sorted by detection confidence. The default sort is by TIMESTAMP.

Type: String

Valid Values: NAME | TIMESTAMP

Required: No

Response Syntax

{ "JobStatus": "string", "ModerationLabels": [ { "ModerationLabel": { "Confidence": number, "Name": "string", "ParentName": "string" }, "Timestamp": number } ], "NextToken": "string", "StatusMessage": "string", "VideoMetadata": { "Codec": "string", "DurationMillis": number, "Format": "string", "FrameHeight": number, "FrameRate": number, "FrameWidth": number } }

Response Elements

If the action is successful, the service sends back an HTTP 200 response.

The following data is returned in JSON format by the service.

JobStatus

The current status of the content moderation job.

Type: String

Valid Values: IN_PROGRESS | SUCCEEDED | FAILED

ModerationLabels

The detected moderation labels and the time(s) they were detected.

Type: Array of ContentModerationDetection objects

NextToken

If the response is truncated, Amazon Rekognition Video returns this token that you can use in the subsequent request to retrieve the next set of moderation labels.

Type: String

Length Constraints: Maximum length of 255.

StatusMessage

If the job fails, StatusMessage provides a descriptive error message.

Type: String

VideoMetadata

Information about a video that Amazon Rekognition analyzed. Videometadata is returned in every page of paginated responses from GetContentModeration.

Type: VideoMetadata object

Errors

AccessDeniedException

You are not authorized to perform the action.

HTTP Status Code: 400

InternalServerError

Amazon Rekognition experienced a service issue. Try your call again.

HTTP Status Code: 500

InvalidPaginationTokenException

Pagination token in the request is not valid.

HTTP Status Code: 400

InvalidParameterException

Input parameter violated a constraint. Validate your parameter before calling the API operation again.

HTTP Status Code: 400

ProvisionedThroughputExceededException

The number of requests exceeded your throughput limit. If you want to increase this limit, contact Amazon Rekognition.

HTTP Status Code: 400

ResourceNotFoundException

The collection specified in the request cannot be found.

HTTP Status Code: 400

ThrottlingException

Amazon Rekognition is temporarily unable to process the request. Try your call again.

HTTP Status Code: 500

See Also

For more information about using this API in one of the language-specific AWS SDKs, see the following: