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ApsaraVideo Live:SetCasterConfig

Last Updated:Aug 15, 2025

Call this operation to configure a production studio in detail, including the name, transcoding configuration, recording configuration, and other parameters of the production studio.

Operation description

You must call the CreateCaster operation to create a production studio before you call this operation. This operation replaces all existing configurations. If you set a parameter to an empty value, the existing configuration for that parameter is cleared.

QPS limit

The queries per second (QPS) limit for a single user is 10 calls per second. API calls that exceed this limit are throttled, which may affect your business. Plan your calls accordingly.

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RAM authorization

The table below describes the authorization required to call this API. You can define it in a Resource Access Management (RAM) policy. The table's columns are detailed below:

  • Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.

  • API: The API that you can call to perform the action.

  • Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.

  • Resource type: The type of the resource that supports authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.

    • For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding Alibaba Cloud Resource Name (ARN) in the Resource element of the policy.

    • For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.

  • Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys applicable across all RAM-supported services.

  • Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

Action

Access level

Resource type

Condition key

Dependent action

live:SetCasterConfig

update

*Caster

acs:live:*:{#accountId}:caster/{#CasterId}

None None

Request parameters

Parameter

Type

Required

Description

Example

RegionId

string

No

The region ID.

cn-shanghai

CasterId

string

Yes

The ID of the production studio.

  • If you create a production studio by calling the CreateCaster operation, use the CasterId value that is returned in the response.

  • If you create a production studio in the ApsaraVideo Live console, go to the ApsaraVideo Live console > Production Studio > Cloud Production Studio page to view the ID.

Note

The name of the production studio in the list on the Cloud Production Studio page is the production studio ID.

a2b8e671-2fe5-4642-a2ec-bf93880e****

CasterName

string

No

The name of the production studio.

liveCaster****

DomainName

string

No

The streaming domain for the streamer.

Configure the domain name before you start the production studio. If you leave this parameter empty, the domain name configuration of the production studio is cleared.

example.com

TranscodeConfig

string

No

The transcoding configuration.

A JSON string. The fields in the struct must be in UpperCamelCase. If you leave this parameter empty, the transcoding configuration is cleared. If no transcoding template is specified, an error is reported when you start the production studio.

{"casterTemplate": "lp_ld"}

RecordConfig

string

No

The recording configuration. This parameter is a JSON string. The elements are described as follows:

  • endpoint: The API endpoint of the Alibaba Cloud service.

  • ossBucket: The name of the OSS bucket.

  • videoFormat: The file formats of the videos that can be exported. Example: [{\"OssObjectPrefix\":\"record/{AppName}/{StreamName}/{StartTime}_{EndTime}\",\"Format\":\"m3u8\",\"CycleDuration\":21600,\"SliceOssObjectPrefix\":\"record/{AppName}/{StreamName}/{UnixTimestamp}\"},{\"OssObjectPrefix\":\"record/{AppName}/{StreamName}/{StartTime}_{EndTime}\",\"Format\":\"flv\",\"CycleDuration\":21600}].

  • interval: The time interval. Unit: milliseconds (ms).

Note

If you leave this parameter empty, the recording feature is disabled and the existing recording configuration is cleared.

{ "endpoint": "http://oss-cn-********.aliyuncs.com/api", "ossBucket****": "liveBucket****", "VideoFormat":[{\"OssObjectPrefix\":\"record/{AppName}/{StreamName}/{StartTime}_{EndTime}\",\"Format\":\"m3u8\",\"CycleDuration\":21600,\"SliceOssObjectPrefix\":\"record/{AppName}/{StreamName}/{UnixTimestamp}\"},{\"OssObjectPrefix\":\"record/{AppName}/{StreamName}/{StartTime}_{EndTime}\",\"Format\":\"flv\",\"CycleDuration\":21600}] "interval": 5 }

Delay

number

No

The stream delay. Unit: seconds.

  • 0 (default): Disables stream delay.

  • A value greater than 0: Enables stream delay.

  • Empty: Clears the stream delay configuration.

Note

The maximum value is 300.

0

UrgentMaterialId

string

No

The ID of the standby video, which is a media asset. If you leave this parameter empty, the standby video configuration is cleared.

a2b8e671

UrgentLiveStreamUrl

string

No

The URL of the standby live stream.

rtmp://demo.aliyundoc.com

SideOutputUrl

string

No

The custom ingest URL for bypass output from the production studio. If you leave this parameter empty, the system uses the automatically generated ingest URL for the output.

Note

The SideOutputUrl parameter supports only stream ingest over RTMP.

rtmp://****/aliyundoc.com:8000/caster/4a82a3d1b7f0462ea37348366201****?auth_key=1608953344-0-0-53f0758162964516ac850f2ddc3f****

SideOutputUrlList

string

No

The list of ingest URLs for multi-channel stream ingest. The URLs can be ingest URLs of Alibaba Cloud CDN or third-party CDNs. You can add up to 20 RTMP ingest URLs for a production studio.

Note

Specify multiple URLs in an array. Example: ["rtmp://domain/app1/stream1","rtmp://domain/app2/stream2"].

rtmp://domain/app/stream?***

CallbackUrl

string

No

The webhook address. To receive callback notifications, enter a valid address that accepts HTTP requests. If you leave this parameter empty, callback notifications for the production studio are canceled.

Note

For more information about production studio callbacks, see Callback information for production studios.

http://****/aliyundoc.com:8000/caster/4a82a3d1b7f0462ea37348366201****?auth_key=1608953344-0-0-53f0758162964516ac850f2ddc3f****

ProgramEffect

integer

No

The flag that indicates whether the carousel is effective.

  • 0: Not effective.

  • 1: Effective.

1

ProgramName

string

No

The name of the carousel. You can configure this parameter when you use the carousel feature.

program_name

ChannelEnable

integer

No

Specifies whether to enable channels.

  • 0 (default): Disables channels.

  • 1: Enables channels.

Note

By default, this feature is disabled. After you enable this feature, you cannot disable it. If channels are disabled, resources are directly referenced by layouts. To enable channels for the first time, the production studio must be in the Stopped state. Existing layouts are discarded. You must first add resources to channels. New layouts directly reference channels. You can use channels to adjust the playback progress and status of video sources. In this mode, if the video source, Preview (PVW), and Program (PGM) areas reference the same resource, their screens remain synchronized.

1

SyncGroupsConfig

string

No

The configuration for multi-view synchronization, which synchronizes multiple video sources. Multi-view synchronization has two modes:

  • mode: 0 (Streamer mode. Multiple video sources are synchronized based on the specified mode.)

  • mode: 1 (Conference mode. All video sources are synchronized with each other. There is no concept of a streamer video.)

Streamer mode: The hostResourceId parameter specifies the video source of the streamer.

Conference mode: The hostResourceId parameter is not used. You only need to provide the resource IDs in the resourceIds parameter.

"[{\"mode\":0,\"resourceIds\":[\"5a6c1c33-8424-46f6-813c-c152220a****\",\"4e6521dc-a40a-4077-b6bf-1fb12a76****\"],\"hostResourceId\":\"3aa2b39a-fd0e-4b8c-be73-b7af31c4****\"}]"

UrgentImageId

string

No

The ID of the standby image, which is a media asset.

a089175eb5f4427684fc0715159a****

UrgentImageUrl

string

No

The URL of the standby image.

http://learn.aliyundoc.com/AppName/image.jpg

AutoSwitchUrgentOn

boolean

No

Specifies whether to enable automatic switchover to the standby resource.

  • true: Enable.

  • false: Disable.

true

AutoSwitchUrgentConfig

string

No

The configuration for automatic switchover to the standby resource. eofThres: the period of time after which the system automatically switches to the standby resource if the stream is interrupted. Unit: seconds.

{"eofThres":3}

Response parameters

Parameter

Type

Description

Example

object

CasterId

string

The ID of the production studio. You can use this ID to query ingest URLs, start the studio, add video resources, add layouts, query layouts, add components, and add playlists.

b4810848-bcf9-4aef-bd4a-e6bba2d9****

RequestId

string

The request ID.

16A96B9A-F203-4EC5-8E43-CB92E68F4CD8

Examples

Success response

JSON format

{
  "CasterId": "b4810848-bcf9-4aef-bd4a-e6bba2d9****",
  "RequestId": "16A96B9A-F203-4EC5-8E43-CB92E68F4CD8"
}

Error codes

HTTP status code

Error code

Error message

Description

400 InvalidUserId.Malformed %s
400 InvalidCasterId.Malformed %s
400 InvalidParameter.Malformed %s
400 IncorrectCasterStatus.Inuse %s
400 InvalidCaster.ChannelDisableUnsupported %s
400 IncorrectCasterStatus.EnableChannel %s
400 MissingParameter %s
500 InternalError %s
403 PermissionDenied %s
404 InvalidCaster.NotFound %s
404 InvalidDomainName.NotFound %s

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.