[ aws . rekognition ]



Starts processing a stream processor. You create a stream processor by calling CreateStreamProcessor . To tell StartStreamProcessor which stream processor to start, use the value of the Name field specified in the call to CreateStreamProcessor .

If you are using a label detection stream processor to detect labels, you need to provide a Start selector and a Stop selector to determine the length of the stream processing time.

See also: AWS API Documentation

See ‘aws help’ for descriptions of global parameters.


--name <value>
[--start-selector <value>]
[--stop-selector <value>]
[--cli-input-json | --cli-input-yaml]
[--generate-cli-skeleton <value>]


--name (string)

The name of the stream processor to start processing.

--start-selector (structure)

Specifies the starting point in the Kinesis stream to start processing. You can use the producer timestamp or the fragment number. For more information, see Fragment .

This is a required parameter for label detection stream processors and should not be used to start a face search stream processor.

KVSStreamStartSelector -> (structure)

Specifies the starting point in the stream to start processing. This can be done with a timestamp or a fragment number in a Kinesis stream.

ProducerTimestamp -> (long)

The timestamp from the producer corresponding to the fragment.

FragmentNumber -> (string)

The unique identifier of the fragment. This value monotonically increases based on the ingestion order.

Shorthand Syntax:


JSON Syntax:

  "KVSStreamStartSelector": {
    "ProducerTimestamp": long,
    "FragmentNumber": "string"

--stop-selector (structure)

Specifies when to stop processing the stream. You can specify a maximum amount of time to process the video.

This is a required parameter for label detection stream processors and should not be used to start a face search stream processor.

MaxDurationInSeconds -> (long)

Specifies the maximum amount of time in seconds that you want the stream to be processed. The largest amount of time is 2 minutes. The default is 10 seconds.

Shorthand Syntax:


JSON Syntax:

  "MaxDurationInSeconds": long

--cli-input-json | --cli-input-yaml (string) Reads arguments from the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, those values will override the JSON-provided values. It is not possible to pass arbitrary binary values using a JSON-provided value as the string will be taken literally. This may not be specified along with --cli-input-yaml.

--generate-cli-skeleton (string) Prints a JSON skeleton to standard output without sending an API request. If provided with no value or the value input, prints a sample input JSON that can be used as an argument for --cli-input-json. Similarly, if provided yaml-input it will print a sample input YAML that can be used with --cli-input-yaml. If provided with the value output, it validates the command inputs and returns a sample output JSON for that command.

See ‘aws help’ for descriptions of global parameters.


To start a stream processor

The following start-stream-processor command starts the specified video stream processor.

aws rekognition start-stream-processor \
    --name my-stream-processor

This command produces no output.

For more information, see Working with Streaming Videos in the Amazon Rekognition Developer Guide.


SessionId -> (string)

A unique identifier for the stream processing session.