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ApsaraVideo Live:DescribeCasterConfig

Last Updated:Aug 05, 2026

Queries the configuration information of a production studio.

Operation description

Create a production studio by calling the CreateCaster operation, and then call this operation to query the configuration information of the production studio.

QPS limit

The single-user QPS limit for this operation is 15 calls per second. If the limit is exceeded, the API call is throttled, which may affect your business. Call this operation appropriately.

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Test

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:DescribeCasterConfig

get

*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 production studio ID.

  • If you created the production studio by calling the CreateCaster operation, check the CasterId parameter value returned by the CreateCaster operation.

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

Note

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

LIVEPRODUCER_POST-cn-0pp1czt****

Response elements

Element

Type

Description

Example

object

The configuration information of the production studio.

AutoSwitchUrgentConfig

string

The automatic standby video switching configuration. eofThres: specifies the duration of stream interruption before automatically switching to the standby video. Unit: seconds.

{"eofThres":3}

AutoSwitchUrgentOn

string

Indicates whether automatic switchover to the standby video upon stream interruption is enabled.

  • true: Enabled.

  • false: Shutdown.

true

CallbackUrl

string

The user callback URL.

http://learn.aliyundoc.com/callBackLive

CasterId

string

The production studio ID.

LIVEPRODUCER_POST-cn-0pp1czt****

CasterName

string

The production studio name.

coco-caster10

ChannelEnable

integer

Indicates whether Channel is enabled. Valid values:

  • 0: Disabled.

  • 1: Enabled.

1

Delay

number

The stream delay. Unit: seconds.

  • 0: Stream delay is disabled.

  • Greater than 0: Stream delay is enabled.

0

DomainName

string

The primary streaming domain.

example.com

ProgramEffect

integer

The playlist effective flag. Valid values:

  • 0: Not effective.

  • 1: Effective.

0

ProgramName

string

The playlist name.

program_name

RecordConfig

object

The recording configuration. If this parameter is empty, the recording feature is not enabled.

OnDemand

integer

The on-demand recording mode. Valid values:

  • 0: Disabled.

  • 1: HTTP callback-based.

  • 2: On-demand recording by parsing stream ingest parameters.

  • 7: Not recorded by default.

0

OssBucket

string

The storage location.

liveBucket****

OssEndpoint

string

The OSS endpoint of the storage location.

oss-cn-shanghai.aliyundoc.com

RecordFormat

object

RecordFormat

array<object>

The recording format configuration.

object

The recording length information.

CycleDuration

integer

The recording length.

3600

Format

string

The recording format.

M3U8

OssObjectPrefix

string

The name of the recording file.

record/{liveApp****}/{liveStream****}

SliceOssObjectPrefix

string

The name of the segment.

record/{liveApp****}/{liveStream****}/{UnixTimestamp****}

RequestId

string

The request ID.

97df6b7f-3490-47d2-ac50-8833e1b64597

SideOutputUrl

string

The custom side output URL of the production studio.

rtmp://sophon-developer.aliyundoc.com/caster/4a82a3d1b7f0462ea37348366201****?auth_key=1608953344-0-0-ac8c628078541d7055a170ec59a5****

SideOutputUrlList

string

The list of custom side output URLs of the production studio.

["rtmp://domain/app1/stream1","rtmp://domain/app2/stream2"]

SyncGroupsConfig

object

SyncGroup

array<object>

The storage configuration.

array<object>

The storage configuration.

HostResourceId

string

The resource ID of the production studio.

28768383240243****

Mode

integer

The caching mode for static pages. Valid values:

  • 0: Standard mode.

  • 1: Strong Mode.

  • 2: No caching.

0

ResourceIds

object

ResourceId

array

The list of IDs of the cloud resources whose resource group you want to change. You can specify from 1 to 50 resource IDs.

string

The list of IDs of the cloud resources whose resource group you want to change. You can specify from 1 to 50 resource IDs.

1

TranscodeConfig

object

The transcoding configuration.

CasterTemplate

string

The production studio transcoding template. Valid values:

  • lp_ld: low definition.

  • lp_sd: standard definition.

  • lp_hd: high definition.

  • lp_ud: ultra-high definition.

  • lp_ld_v: portrait low definition.

  • lp_sd_v: portrait standard definition.

  • lp_hd_v: portrait high definition.

  • lp_ud_v: portrait ultra-high definition.

lp_hd

LiveTemplateIds

object

LocationId

array

The live stream transcoding configuration.

string

The live stream transcoding configuration. Valid values:

  • lsd: Standard definition.

  • lld: Low definition.

  • lud: Ultra-high definition.

  • lhd: High-definition adaptive transcoding template.

  • daobo-lsd: Standard definition.

  • daobo-lld: Low definition.

  • daobo-lud: Ultra-high definition.

  • daobo-lhd: High definition.

lld

CustomParams

object

The custom configuration.

video

object

Video parameters

fps

integer

Video frame rate

300

bitrate

integer

Video bitrate

300

width

integer

The video width in pixels (px).

1080

height

integer

The video height in pixels (px).

720

UrgentImageId

string

The media library asset ID of the standby image.

a089175eb5f4427684fc0715159a****

UrgentImageUrl

string

The URL of the standby image.

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

UrgentLiveStreamUrl

string

The URL of the standby live stream.

rtmp://demo.aliyundoc.com

UrgentMaterialId

string

The media library asset ID of the standby video.

98646538-bcf9-4aef-bd4a-e6bb76588****

AudioMixerMode

string

Examples

Success response

JSON format

{
  "AutoSwitchUrgentConfig": "{\"eofThres\":3}",
  "AutoSwitchUrgentOn": "true",
  "CallbackUrl": "http://learn.aliyundoc.com/callBackLive",
  "CasterId": "LIVEPRODUCER_POST-cn-0pp1czt****",
  "CasterName": "coco-caster10",
  "ChannelEnable": 1,
  "Delay": 0,
  "DomainName": "example.com",
  "ProgramEffect": 0,
  "ProgramName": "program_name",
  "RecordConfig": {
    "OnDemand": 0,
    "OssBucket": "liveBucket****",
    "OssEndpoint": "oss-cn-shanghai.aliyundoc.com",
    "RecordFormat": {
      "RecordFormat": [
        {
          "CycleDuration": 3600,
          "Format": "M3U8",
          "OssObjectPrefix": "record/{liveApp****}/{liveStream****}",
          "SliceOssObjectPrefix": "record/{liveApp****}/{liveStream****}/{UnixTimestamp****}"
        }
      ]
    }
  },
  "RequestId": "97df6b7f-3490-47d2-ac50-8833e1b64597",
  "SideOutputUrl": "rtmp://sophon-developer.aliyundoc.com/caster/4a82a3d1b7f0462ea37348366201****?auth_key=1608953344-0-0-ac8c628078541d7055a170ec59a5****",
  "SideOutputUrlList": "[\"rtmp://domain/app1/stream1\",\"rtmp://domain/app2/stream2\"]",
  "SyncGroupsConfig": {
    "SyncGroup": [
      {
        "HostResourceId": "28768383240243****",
        "Mode": 0,
        "ResourceIds": {
          "ResourceId": [
            "1"
          ]
        }
      }
    ]
  },
  "TranscodeConfig": {
    "CasterTemplate": "lp_hd",
    "LiveTemplateIds": {
      "LocationId": [
        "lld"
      ]
    },
    "CustomParams": {
      "video": {
        "fps": 300,
        "bitrate": 300,
        "width": 1080,
        "height": 720
      }
    }
  },
  "UrgentImageId": "a089175eb5f4427684fc0715159a****",
  "UrgentImageUrl": "http://learn.aliyundoc.com/AppName/image.jpg",
  "UrgentLiveStreamUrl": "rtmp://demo.aliyundoc.com",
  "UrgentMaterialId": "98646538-bcf9-4aef-bd4a-e6bb76588****",
  "AudioMixerMode": ""
}

Error codes

HTTP status code

Error code

Error message

Description

400 InvalidCasterId.Malformed %s, please check and try again later. The parameter CasterId is invalid, please check and try again.
401 IllegalOperation %s, please check and try again later. Operation not allowed, please check and try again.
500 InternalError %s, please try again later. Internal error, please try again later.
404 InvalidCaster.NotFound %s, please check and try again later. The guide station does not exist, please check and try again.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.