Video API, gRPC: SubtitleService.Create

Written by

Updated at August 8, 2025

gRPC request
CreateSubtitleRequest
SubtitleUploadParams
operation.Operation
CreateSubtitleMetadata
Subtitle

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.
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.
video_id	string ID of the video. 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": {
    "subtitle_id": "string"
  },
  // Includes only one of the fields `error`, `response`
  "error": "google.rpc.Status",
  "response": {
    "id": "string",
    "language": "string",
    "label": "string",
    "status": "SubtitleStatus",
    "source_type": "SubtitleSourceType",
    "filename": "string",
    "created_at": "google.protobuf.Timestamp",
    "updated_at": "google.protobuf.Timestamp",
    // Includes only one of the fields `video_id`
    "video_id": "string"
    // end of the list of possible fields
  }
  // 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	CreateSubtitleMetadata 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	Subtitle 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.

CreateSubtitleMetadata

Field

Description

subtitle_id

string

ID of the subtitle being created.

Subtitle

Entity representing a subtitle track that can be associated with a video.
Subtitles provide text versions of the audio content, enabling accessibility
and multilingual support for video content.

Field	Description
id	string Unique identifier of the subtitle track.
language	string Language of the subtitle content according to ISO 639-2/T.
label	string Display label for the subtitle track shown in the video player's subtitle selection menu.
status	enum SubtitleStatus Current processing status of the subtitle. `SUBTITLE_STATUS_UNSPECIFIED`: The subtitle status is not specified. `WAIT_UPLOADING`: The subtitle file upload is in progress, waiting for all bytes to be received. `UPLOADED`: The subtitle file has been fully uploaded and is ready for use.
source_type	enum SubtitleSourceType Indicates how the subtitle was created or obtained. `SUBTITLE_SOURCE_TYPE_UNSPECIFIED`: The subtitle source type is not specified. `MANUAL`: The subtitle was manually created and uploaded by a user. `GENERATED`: The subtitle was automatically generated through speech recognition.
filename	string Original filename of the subtitle file.
created_at	google.protobuf.Timestamp Timestamp when the subtitle was initially created in the system.
updated_at	google.protobuf.Timestamp Timestamp of the last modification to the subtitle or its metadata.
video_id	string Identifier of the video this subtitle belongs to. Includes only one of the fields `video_id`. Specifies the parent content this subtitle is associated with.

Video API, gRPC: SubtitleService.Create

gRPC requestgRPC request

CreateSubtitleRequestCreateSubtitleRequest

SubtitleUploadParamsSubtitleUploadParams

operation.Operationoperation.Operation

CreateSubtitleMetadataCreateSubtitleMetadata

SubtitleSubtitle