Amazon Transcribe
Developer Guide


Starts an asynchronous job to transcribe speech to text.

Request Syntax

{ "LanguageCode": "string", "Media": { "MediaFileUri": "string" }, "MediaFormat": "string", "MediaSampleRateHertz": number, "TranscriptionJobName": "string" }

Request Parameters

For information about the parameters that are common to all actions, see Common Parameters.

The request accepts the following data in JSON format.


The language code for the language used in the input media file.

Type: String

Valid Values: en-US | es-US

Required: Yes


An object that describes the input media for a transcription job.

Type: Media object

Required: Yes


The format of the input media file.

Type: String

Valid Values: mp3 | mp4 | wav | flac

Required: Yes


The sample rate, in Hertz, of the audio track in the input media file.

Type: Integer

Valid Range: Minimum value of 8000. Maximum value of 48000.

Required: No


The name of the job. The name must be unique within an AWS account.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 200.

Pattern: ^[0-9a-zA-Z._-]+

Required: Yes

Response Syntax

{ "TranscriptionJob": { "CompletionTime": number, "CreationTime": number, "FailureReason": "string", "LanguageCode": "string", "Media": { "MediaFileUri": "string" }, "MediaFormat": "string", "MediaSampleRateHertz": number, "Transcript": { "TranscriptFileUri": "string" }, "TranscriptionJobName": "string", "TranscriptionJobStatus": "string" } }

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.


An object containing details of the asynchronous transcription job.

Type: TranscriptionJob object


For information about the errors that are common to all actions, see Common Errors.


There is a problem with one of the input fields. Check the S3 bucket name, make sure that the job name is not a duplicate, and confirm that you are using the correct file format. Then resend your request.

HTTP Status Code: 400


The JobName field is a duplicate of a previously entered job name. Resend your request with a different name.

HTTP Status Code: 400


There was an internal error. Check the error message and try your request again.

HTTP Status Code: 500


Either you have sent too many requests or your input file is longer than 2 hours. Wait before you resend your request, or use a smaller file and resend the request.

HTTP Status Code: 400

See Also

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