Starts asynchronous detection of text in a stored video.
Amazon Rekognition Video can detect text in a video stored in an Amazon S3 bucket. Use Video to specify the bucket name and the filename of the video. StartTextDetection returns a job identifier (JobId) which you use to get the results of the operation. When text detection is finished, Amazon Rekognition Video publishes a completion status to the Amazon Simple Notification Service topic that you specify in NotificationChannel.
To get the results of the text detection operation, first check that the status value published to the Amazon SNS topic is SUCCEEDED. if so, call GetTextDetection and pass the job identifier (JobId) from the initial call to StartTextDetection.
Parameters:
-
client_request_token
(Optional[ClientRequestToken], default:
None
)
–
Idempotent token used to identify the start request. If you use the same token with multiple StartTextDetection requests, the same JobId is returned. Use ClientRequestToken to prevent the same job from being accidentaly started more than once.
-
job_tag
(Optional[JobTag], default:
None
)
–
An identifier returned in the completion status published by your Amazon Simple Notification Service topic. For example, you can use JobTag to group related jobs and identify them in the completion notification.
-
filters
(Optional[StartTextDetectionFilters], default:
None
)
–
Optional parameters that let you set criteria the text must meet to be included in your response.
Raises:
-
AccessDeniedException
–
You are not authorized to perform the action.
-
IdempotentParameterMismatchException
–
A ClientRequestToken input parameter was reused with an operation, but at least one of the other input parameters is different from the previous call to the operation.
-
InternalServerError
–
Amazon Rekognition experienced a service issue. Try your call again.
-
InvalidParameterException
–
Input parameter violated a constraint. Validate your parameter before calling the API operation again.
-
InvalidS3ObjectException
–
Amazon Rekognition is unable to access the S3 object specified in the request.
-
LimitExceededException
–
An Amazon Rekognition service limit was exceeded. For example, if you start too many jobs concurrently, subsequent calls to start operations (ex: StartLabelDetection) will raise a LimitExceededException exception (HTTP status code: 400) until the number of concurrently running jobs is below the Amazon Rekognition service limit.
-
ProvisionedThroughputExceededException
–
The number of requests exceeded your throughput limit. If you want to increase this limit, contact Amazon Rekognition.
-
ThrottlingException
–
Amazon Rekognition is temporarily unable to process the request. Try your call again.
-
VideoTooLargeException
–
The file size or duration of the supplied media is too large. The maximum file size is 10GB. The maximum duration is 6 hours.
-
UnknownServiceError
–
The service returned an error code this client does not model.
Source code in docs_src/capo_rekognition/_services/async_rekognition.py
| async def start_text_detection(
self,
video: "capo_rekognition.types.video.Video",
*,
config_overrides: Optional[AsyncRekognitionClientConfig] = None,
client_request_token: Optional[
"capo_rekognition.types.client_request_token.ClientRequestToken"
] = None,
notification_channel: Optional[
"capo_rekognition.types.notification_channel.NotificationChannel"
] = None,
job_tag: Optional["capo_rekognition.types.job_tag.JobTag"] = None,
filters: Optional[
"capo_rekognition.types.start_text_detection_filters.StartTextDetectionFilters"
] = None,
) -> "capo_rekognition.types.start_text_detection_response.StartTextDetectionResponse":
"""<p>Starts asynchronous detection of text in a stored video.</p> <p>Amazon Rekognition Video can detect text in a video stored in an Amazon S3 bucket. Use <a>Video</a> to specify the bucket name and the filename of the video. <code>StartTextDetection</code> returns a job identifier (<code>JobId</code>) which you use to get the results of the operation. When text detection is finished, Amazon Rekognition Video publishes a completion status to the Amazon Simple Notification Service topic that you specify in <code>NotificationChannel</code>.</p> <p>To get the results of the text detection operation, first check that the status value published to the Amazon SNS topic is <code>SUCCEEDED</code>. if so, call <a>GetTextDetection</a> and pass the job identifier (<code>JobId</code>) from the initial call to <code>StartTextDetection</code>. </p>
Args:
client_request_token: <p>Idempotent token used to identify the start request. If you use the same token with multiple <code>StartTextDetection</code> requests, the same <code>JobId</code> is returned. Use <code>ClientRequestToken</code> to prevent the same job from being accidentaly started more than once.</p>
job_tag: <p>An identifier returned in the completion status published by your Amazon Simple Notification Service topic. For example, you can use <code>JobTag</code> to group related jobs and identify them in the completion notification.</p>
filters: <p>Optional parameters that let you set criteria the text must meet to be included in your response.</p>
Raises:
capo_rekognition.errors.access_denied_exception.AccessDeniedException: <p>You are not authorized to perform the action.</p>
capo_rekognition.errors.idempotent_parameter_mismatch_exception.IdempotentParameterMismatchException: <p>A <code>ClientRequestToken</code> input parameter was reused with an operation, but at least one of the other input parameters is different from the previous call to the operation.</p>
capo_rekognition.errors.internal_server_error.InternalServerError: <p>Amazon Rekognition experienced a service issue. Try your call again.</p>
capo_rekognition.errors.invalid_parameter_exception.InvalidParameterException: <p>Input parameter violated a constraint. Validate your parameter before calling the API operation again.</p>
capo_rekognition.errors.invalid_s3_object_exception.InvalidS3ObjectException: <p>Amazon Rekognition is unable to access the S3 object specified in the request.</p>
capo_rekognition.errors.limit_exceeded_exception.LimitExceededException: <p>An Amazon Rekognition service limit was exceeded. For example, if you start too many jobs concurrently, subsequent calls to start operations (ex: <code>StartLabelDetection</code>) will raise a <code>LimitExceededException</code> exception (HTTP status code: 400) until the number of concurrently running jobs is below the Amazon Rekognition service limit. </p>
capo_rekognition.errors.provisioned_throughput_exceeded_exception.ProvisionedThroughputExceededException: <p>The number of requests exceeded your throughput limit. If you want to increase this limit, contact Amazon Rekognition.</p>
capo_rekognition.errors.throttling_exception.ThrottlingException: <p>Amazon Rekognition is temporarily unable to process the request. Try your call again.</p>
capo_rekognition.errors.video_too_large_exception.VideoTooLargeException: <p>The file size or duration of the supplied media is too large. The maximum file size is 10GB. The maximum duration is 6 hours. </p>
capo_rekognition.errors.UnknownServiceError: The service returned an error code this client does not model.
"""
async def _handler(
req: "AsyncOperationRequest[capo_rekognition.types.start_text_detection_request.StartTextDetectionRequest]",
) -> AsyncOperationResponse[
"capo_rekognition.types.start_text_detection_response.StartTextDetectionResponse"
]:
import capo_rekognition._operations.rekognition_service.start_text_detection
(
output,
http_response,
) = await capo_rekognition._operations.rekognition_service.start_text_detection.async_start_text_detection(
req.options, req.input
)
return AsyncOperationResponse(output=output, response=http_response)
interceptors_, options_ = self.operation_options(
config_overrides, OperationLogging("StartTextDetection")
)
input_: capo_rekognition.types.start_text_detection_request.StartTextDetectionRequest = {
"video": video
}
if client_request_token is not None:
input_["client_request_token"] = client_request_token
if notification_channel is not None:
input_["notification_channel"] = notification_channel
if job_tag is not None:
input_["job_tag"] = job_tag
if filters is not None:
input_["filters"] = filters
response = await aexecute_pipeline(
AsyncOperationRequest(input=input_, options=options_),
handler=_handler,
interceptors=list(interceptors_),
)
await response.response.aclose()
return response.output
|