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ApsaraVideo Live:DescribeCasterComponents

Last Updated:Jun 10, 2026

Mengkueri daftar komponen untuk studio produksi.

Deskripsi operasi

Call the AddCasterComponent operation to add components to a production studio. You can then call this operation to query the list of components.

QPS limit

The queries per second (QPS) limit for a single user is 15. If you exceed the limit, API calls are throttled. This may affect your business, so ensure that you call this operation within the limit.

Coba sekarang

Coba API ini di OpenAPI Explorer tanpa perlu penandatanganan manual. Panggilan yang berhasil akan secara otomatis menghasilkan contoh kode SDK sesuai dengan parameter Anda. Unduh kode tersebut dengan kredensial bawaan yang aman untuk penggunaan lokal.

Test

RAM authorization

Tabel berikut menjelaskan otorisasi yang diperlukan untuk memanggil API ini. Anda dapat menentukannya dalam kebijakan Resource Access Management (RAM). Kolom pada tabel dijelaskan sebagai berikut:

  • Action: Aksi yang dapat digunakan dalam elemen Action pada pernyataan kebijakan izin RAM untuk memberikan izin guna melakukan operasi tersebut.

  • API: API yang dapat Anda panggil untuk melakukan aksi tersebut.

  • Access level: Tingkat akses yang telah ditentukan untuk setiap API. Nilai yang valid: create, list, get, update, dan delete.

  • Resource type: Jenis resource yang mendukung otorisasi untuk melakukan aksi tersebut. Ini menunjukkan apakah aksi tersebut mendukung izin tingkat resource. Resource yang ditentukan harus kompatibel dengan aksi tersebut. Jika tidak, kebijakan tersebut tidak akan berlaku.

    • Untuk API dengan izin tingkat resource, jenis resource yang diperlukan ditandai dengan tanda bintang (*). Tentukan Nama Sumber Daya Alibaba Cloud (ARN) yang sesuai dalam elemen Resource pada kebijakan.

    • Untuk API tanpa izin tingkat resource, ditampilkan sebagai All Resources. Gunakan tanda bintang (*) dalam elemen Resource pada kebijakan.

  • Condition key: Kunci kondisi yang didefinisikan oleh layanan. Kunci ini memungkinkan kontrol granular, berlaku baik hanya untuk aksi maupun untuk aksi yang terkait dengan resource tertentu. Selain kunci kondisi spesifik layanan, Alibaba Cloud menyediakan serangkaian common condition keys yang berlaku di semua layanan yang didukung RAM.

  • Dependent action: Aksi dependen yang diperlukan untuk menjalankan aksi tersebut. Untuk menyelesaikan aksi tersebut, pengguna RAM atau role RAM harus memiliki izin untuk melakukan semua aksi dependen.

Action

Access level

Resource type

Condition key

Dependent action

live:DescribeCasterComponents

get

*Caster

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

None None

Parameter permintaan

Parameter

Type

Required

Description

Example

RegionId

string

No

ID wilayah.

cn-shanghai

CasterId

string

Yes

ID studio produksi.

  • Jika Anda membuat studio produksi dengan memanggil operasi CreateCaster, dapatkan ID dari parameter CasterId di tanggapan.

  • Jika Anda membuat studio produksi di konsol LIVE, buka halaman Cloud Production Studio dengan memilih Konsol LIVE > Production Studio > Cloud Production Studio.

Catatan

Nama studio produksi dalam daftar di halaman Cloud Production Studio adalah ID studio produksi.

LIVEPRODUCER_POST-cn-0pp1czt****

ComponentId

string

No

ID komponen. Jika Anda menambahkan komponen dengan memanggil operasi AddCasterComponent, dapatkan ID dari parameter ComponentId di tanggapan.

21926b36-7dd2-4fde-ae25-51b5bc8e****

Elemen respons

Element

Type

Description

Example

object

Components

object

Component

array<object>

The list of components.

array<object>

CaptionLayerContent

object

The properties of the caption element.

BorderColor

string

The color of the text border.

Valid values: 0x000000 to 0xffffff. The default value is an empty string (""), which means this parameter is not used.

0x000000

BorderWidthNormalized

number

The normalized width of the text border. The value is calculated based on the font size: BorderWidth/FontSize.

If the calculated value exceeds 16, the value 16 is used. Default value: 0.

0

Color

string

The color of the text. Valid values: 0x000000 to 0xffffff.

0x000000

FontName

string

The font. The value must be a preset value. Valid values:

  • KaiTi: KaiTi

  • AlibabaPuHuiTi-Regular: Alibaba PuHuiTi Regular

  • AlibabaPuHuiTi-Bold: Alibaba PuHuiTi Bold

  • NAlibabaPuHuiTi-Light: Alibaba PuHuiTi Light

  • NotoSansHans-Regular: Noto Sans CJK Regular

  • NotoSansHans-Bold: Noto Sans CJK Bold

  • NotoSansHans-Light: Noto Sans CJK Light

Default value: KaiTi.

KaiTi

LineSpaceNormalized

number

The line spacing. This parameter specifies the space between two lines of text. Default value: 0.

0

LocationId

string

If the component type is caption, this parameter specifies the location of the referenced video source (the channel ID).

RV01

PtsOffset

integer

The value used to correct the drift between the presentation timestamp (PTS) of the caption and the PTS of the audio.

Valid values: -10000 to +10000. Default value: 0.

0

ShowSourceLan

boolean

Specifies whether to display the source language. Valid values:

  • true: The source language is displayed.

  • false (default): The source language is not displayed.

false

SizeNormalized

number

The normalized font size. The font size is set to [font_size,output_height].

If the calculated font size is greater than 1024, the value 1024 is used. The default value is -1, which means this parameter is not used.

0.1

SourceLan

string

The source language of the video source audio. Valid values:

  • en: English

  • cn (default): Chinese

  • es: Spanish

  • ru: Russian

cn

TargetLan

string

The target language of the video source audio. Valid values:

  • en: English

  • cn (default): Chinese

  • es: Spanish

  • ru: Russian

cn

WordCountPerLine

integer

The maximum number of characters to display per line.

15

WordSpaceNormalized

number

The character spacing. This parameter specifies the space between two characters. Default value: 0.

0

WordsCount

integer

The number of characters to display. You can adjust this value along with the font size.

Valid values: 10 to 50. Default value: 35.

35

ComponentId

string

The component ID.

72d2ec7a-4cd7-4a01-974b-7cd53947****

ComponentLayer

object

The size, layout, and other information of the component layer.

HeightNormalized

number

The normalized height of the layer element. The width of the element is scaled proportionally based on this height.

The default value is 0, which means the element is displayed in its original size.

0.5

PositionNormalizeds

object

Position

array

The normalized coordinates of the layer element, in the format [x,y]. Default value: [0,0].

Catatan

The values of x and y must be normalized.

number

The value.

0.3

PositionRefer

string

The reference point for the element's position. Valid values:

  • topLeft (default): The top-left corner.

  • topRight: The top-right corner.

  • bottomLeft: The bottom-left corner.

  • bottomRight: The bottom-right corner.

topLeft

Transparency

integer

The transparency of the layer. Valid values: 0 to 255.

A value of 0 indicates that the layer is fully transparent. A value of 255 (default) indicates that the layer is fully opaque.

200

WidthNormalized

number

The normalized width of the layer element. The height of the element is scaled proportionally based on this width. The default value is 0, which means the element is displayed in its original size.

Catatan

This parameter conflicts with HeightNormalized. If both are set, only HeightNormalized takes effect. If you set only one, the value set later overrides the previous one.

0.5

ComponentName

string

The component name. The default value is the component ID.

component_name

ComponentType

string

The component type. Valid values:

  • text: Text component.

  • image: Image component.

  • caption: Translated caption component.

text

Effect

string

The display effect of the component. Valid values:

  • none: No effect.

  • animateH: Horizontal scroll.

  • animateV: Vertical scroll.

animateV

ImageLayerContent

object

The properties of the image element.

MaterialId

string

The ID of the media asset.

6cf724c6ebfd4a59b5b3cec6f10d****

LocationId

string

The position of the component.

You can set only one component for each position. The format must be "RC01" to "RC12".

RC01

TextLayerContent

object

The properties of the text element.

BorderColor

string

The color of the text border. Valid values: 0x000000 to 0xffffff. The default value is an empty string (""), which means this parameter is not used.

0x000000

BorderWidthNormalized

number

The normalized width of the text border. The value is calculated based on the font size: BorderWidth/FontSize.

If the calculated value exceeds 16, the value 16 is used. Default value: 0.

0

Color

string

The color of the text. Valid values: 0x000000 to 0xffffff.

0xff0000

FontName

string

The font. The value must be a preset value. Valid values:

  • KaiTi: KaiTi

  • AlibabaPuHuiTi-Regular: Alibaba PuHuiTi Regular

  • AlibabaPuHuiTi-Bold: Alibaba PuHuiTi Bold

  • NAlibabaPuHuiTi-Light: Alibaba PuHuiTi Light

  • NotoSansHans-Regular: Noto Sans CJK Regular

  • NotoSansHans-Bold: Noto Sans CJK Bold

  • NotoSansHans-Light: Noto Sans CJK Light

Default value: KaiTi.

KaiTi

SizeNormalized

number

The normalized font size.

The size is set to font_size/output_height. If the calculated font size is greater than 1024, the value 1024 is used. The default value is -1, which means this parameter is not used.

16

Text

string

The text content.

hello world

RequestId

string

The request ID.

3be7ade8-d907-483c-b24a-0dad45******

Total

integer

The total number of records.

3

Contoh

Respons sukses

JSONformat

{
  "Components": {
    "Component": [
      {
        "CaptionLayerContent": {
          "BorderColor": "0x000000",
          "BorderWidthNormalized": 0,
          "Color": "0x000000",
          "FontName": "KaiTi",
          "LineSpaceNormalized": 0,
          "LocationId": "RV01",
          "PtsOffset": 0,
          "ShowSourceLan": false,
          "SizeNormalized": 0.1,
          "SourceLan": "cn",
          "TargetLan": "cn",
          "WordCountPerLine": 15,
          "WordSpaceNormalized": 0,
          "WordsCount": 35
        },
        "ComponentId": "72d2ec7a-4cd7-4a01-974b-7cd53947****",
        "ComponentLayer": {
          "HeightNormalized": 0.5,
          "PositionNormalizeds": {
            "Position": [
              0.3
            ]
          },
          "PositionRefer": "topLeft",
          "Transparency": 200,
          "WidthNormalized": 0.5
        },
        "ComponentName": "component_name",
        "ComponentType": "text",
        "Effect": "animateV",
        "ImageLayerContent": {
          "MaterialId": "6cf724c6ebfd4a59b5b3cec6f10d****"
        },
        "LocationId": "RC01",
        "TextLayerContent": {
          "BorderColor": "0x000000",
          "BorderWidthNormalized": 0,
          "Color": "0xff0000",
          "FontName": "KaiTi",
          "SizeNormalized": 16,
          "Text": "hello world"
        }
      }
    ]
  },
  "RequestId": "3be7ade8-d907-483c-b24a-0dad45******",
  "Total": 3
}

Kode kesalahan

HTTP status code

Error code

Error message

Description

400 InvalidCasterId.Malformed %s, please check and try again later.
401 IllegalOperation %s, please check and try again later.
500 InternalError %s, please try again later.
404 InvalidCaster.NotFound %s, please check and try again later.

Lihat Error Codes untuk daftar lengkap.

Catatan rilis

Lihat Release Notes untuk daftar lengkap.