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Video API, gRPC: ThumbnailService.Create

Written by
Updated at November 25, 2025

Creates a new thumbnail record for a specific resource.
This method only creates the metadata record; the actual image must be uploaded
using the URL obtained from the GenerateUploadURL method.

gRPC request

rpc Create (CreateThumbnailRequest) returns (operation.Operation)

CreateThumbnailRequest

{
  "channel_id": "string",
  // Includes only one of the fields `episode_id`, `video_id`
  "episode_id": "string",
  "video_id": "string"
  // end of the list of possible fields
}

Field

Description

channel_id

string

[Deprecated] ID of the channel.

The maximum string length in characters is 50.

episode_id

string

ID of the episode to associate the thumbnail with.

The maximum string length in characters is 50.

Includes only one of the fields episode_id, video_id.

video_id

string

ID of the video to associate the thumbnail with.

The maximum string length in characters is 50.

Includes only one of the fields episode_id, video_id.

operation.Operation

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

CreateThumbnailMetadata

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

Thumbnail

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.

CreateThumbnailMetadata

Field

Description

thumbnail_id

string

ID of the thumbnail being created.

Thumbnail

Entity representing an image used as a visual representation for various content entities.
Thumbnails provide preview images for channels, streams, episodes, videos, and stream lines.

Field

Description

id

string

Unique identifier of the thumbnail.

channel_id

string

Identifier of the channel where the thumbnail is created and managed.

episode_id

string

ID of the episode which the thumbnail is associated with.

Includes only one of the fields episode_id, video_id.

video_id

string

ID of the video which the thumbnail is associated with.

Includes only one of the fields episode_id, video_id.

created_at

google.protobuf.Timestamp

Timestamp when the thumbnail was initially created in the system.
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