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Video API, gRPC: StreamService.Create

Written by
Updated at May 28, 2026

Creates a new stream in the specified channel.
Streams can be created as on-demand (starting when a signal appears)
or scheduled (starting and finishing at specified time).

gRPC request

rpc Create (CreateStreamRequest) returns (operation.Operation)

CreateStreamRequest

{
  "channel_id": "string",
  "line_id": "string",
  "title": "string",
  "description": "string",
  "thumbnail_id": "string",
  "auto_publish": "google.protobuf.BoolValue",
  "labels": "map<string, string>",
  // Includes only one of the fields `on_demand`, `schedule`
  "on_demand": "OnDemandParams",
  "schedule": {
    "start_time": "google.protobuf.Timestamp",
    "finish_time": "google.protobuf.Timestamp"
  }
  // end of the list of possible fields
}

Field

Description

channel_id

string

Required field. ID of the channel where the stream will be created.

The maximum string length in characters is 50.

line_id

string

Required field. ID of the stream line to which this stream will be linked.
Stream lines define the technical configuration for streaming.

The maximum string length in characters is 50.

title

string

Required field. Title of the stream to be displayed in interfaces and players.

The maximum string length in characters is 300.

description

string

Detailed description of the stream content and context.
Optional field that can provide additional information about the stream.

The maximum string length in characters is 4000.

thumbnail_id

string

ID of the thumbnail image to be used for the stream.

The maximum string length in characters is 50.

auto_publish

google.protobuf.BoolValue

Controls whether the stream is automatically published when ready.
When set to true, the stream's status will automatically change from
READY to ONAIR when the streaming infrastructure is prepared,
making it available for viewing without manual intervention.

labels

object (map<string, string>)

Custom user-defined labels as key:value pairs.
Maximum 64 labels per stream.
Keys must be lowercase alphanumeric strings with optional hyphens/underscores.
Values can contain alphanumeric characters and various symbols.

The maximum string length in characters for each value is 63. The maximum string length in characters for each key is 63. Each key must match the regular expression [a-z][-_0-9a-z]*. Each value must match the regular expression [-_.@:/0-9a-zA-Z]*. No more than 64 per resource.

on_demand

OnDemandParams

On-demand stream that starts immediately when a video signal appears.
This type of stream has no predetermined start or end time.

Includes only one of the fields on_demand, schedule.

Specifies the stream scheduling type (exactly one must be chosen).

schedule

ScheduleParams

Scheduled stream that starts and finishes at specified time.
This type of stream has predetermined start and end time.

Includes only one of the fields on_demand, schedule.

Specifies the stream scheduling type (exactly one must be chosen).

OnDemandParams

On-demand streams start automatically when a video signal is detected
and must be manually stopped when no longer needed.

Field

Description

Empty

ScheduleParams

Field

Description

start_time

google.protobuf.Timestamp

Required field. Scheduled time when the stream should automatically start.
The streaming infrastructure will be prepared at this time
and will begin accepting the video signal.

finish_time

google.protobuf.Timestamp

Required field. Scheduled time when the stream should automatically finish.
The streaming infrastructure will be shut down at this time
and the stream will be marked as FINISHED.

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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