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Video API, gRPC: SubtitleService.Create

Written by
Updated at May 28, 2026

Creates a new subtitle record for a specific video.
This method only creates the metadata record; the actual subtitle file must be uploaded
using the URL obtained from the GenerateUploadURL method.

gRPC request

rpc Create (CreateSubtitleRequest) returns (operation.Operation)

CreateSubtitleRequest

{
  "language": "string",
  "label": "string",
  // Includes only one of the fields `video_id`
  "video_id": "string",
  // end of the list of possible fields
  // Includes only one of the fields `upload`
  "upload": {
    "filename": "string"
  }
  // end of the list of possible fields
}

Field

Description

language

string

Subtitle language represented as a three-letter code according to ISO 639-2/T.

Value must match the regular expression ara|deu|eng|fra|ita|jpn|kaz|kor|rus|spa|tur|ukr|zho.

label

string

Contains the subtitle label (or title) that will be displayed on screen during video playback.
Should provide a concise and accurate representation of the spoken content.
If not provided, it will be auto-generated based on the specified language.

The maximum string length in characters is 50.

video_id

string

ID of the video.

The maximum string length in characters is 50.

Includes only one of the fields video_id.

upload

SubtitleUploadParams

Upload subtitle.

Includes only one of the fields upload.

Source type.

SubtitleUploadParams

Field

Description

filename

string

Required field. Original filename of the subtitle file being uploaded.

operation.Operation

{
  "id": "string",
  "description": "string",
  "created_at": "google.protobuf.Timestamp",
  "created_by": "string",
  "modified_at": "google.protobuf.Timestamp",
  "done": "bool",
  "metadata": "google.protobuf.Any",
  // Includes only one of the fields `error`, `response`
  "error": "google.rpc.Status",
  "response": "google.protobuf.Any"
  // end of the list of possible fields
}

An Operation resource. For more information, see Operation.

Field

Description

id

string

ID of the operation.

description

string

Description of the operation. 0-256 characters long.

created_at

google.protobuf.Timestamp

Creation timestamp.

created_by

string

ID of the user or service account who initiated the operation.

modified_at

google.protobuf.Timestamp

The time when the Operation resource was last modified.

done

bool

If the value is false, it means the operation is still in progress.
If true, the operation is completed, and either error or response is available.

metadata

google.protobuf.Any

Service-specific metadata associated with the operation.
It typically contains the ID of the target resource that the operation is performed on.
Any method that returns a long-running operation should document the metadata type, if any.

error

google.rpc.Status

The error result of the operation in case of failure or cancellation.

Includes only one of the fields error, response.

The operation result.
If done == false and there was no failure detected, neither error nor response is set.
If done == false and there was a failure detected, error is set.
If done == true, exactly one of error or response is set.

response

google.protobuf.Any

The normal response of the operation in case of success.
If the original method returns no data on success, such as Delete,
the response is google.protobuf.Empty.
If the original method is the standard Create/Update,
the response should be the target resource of the operation.
Any method that returns a long-running operation should document the response type, if any.

Includes only one of the fields error, response.

The operation result.
If done == false and there was no failure detected, neither error nor response is set.
If done == false and there was a failure detected, error is set.
If done == true, exactly one of error or response is set.
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