DescribeLiveStreamTranscodeInfo - ApsaraVideo Live - Alibaba Cloud Documentation Center

Usage notes

Obtain the main streaming domain, and then call this operation to query the transcoding configurations.

QPS limit

You can call this operation up to 60 times per second per account. Requests that exceed this limit are dropped and you will experience service interruptions. We recommend that you take note of this limit when you call this operation. For more information, see QPS limits.

Debugging

OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer. OpenAPI Explorer dynamically generates the sample code of the operation for different SDKs.

Request parameters

Parameter	Type	Required	Example	Description
Action	String	Yes	DescribeLiveStreamTranscodeInfo	The operation that you want to perform. Set the value to DescribeLiveStreamTranscodeInfo.
DomainTranscodeName	String	Yes	example.com	The main streaming domain.
AppName	String	No	myapp	The name of the application to which the live stream belongs.

Response parameters

Parameter	Type	Example	Description
RequestId	String	62136AE6-7793-45ED-B14A-60D19A9486D3	The request ID.
DomainTranscodeList	Array of DomainTranscodeInfo		The transcoding configurations.
DomainTranscodeInfo
TranscodeApp	String	liveApp****	The application name.
TranscodeTemplate	String	lld	The transcoding template ID. Valid values: Standard transcoding: lld: low definition lsd: standard definition lhd: high definition lud: ultra-high definition Narrowband HD™ transcoding: ld: low definition sd: standard definition hd: high definition ud: ultra-high definition
IsLazy	Boolean	true	Indicates whether forcible transcoding is used. Valid values: true: Delayed transcoding is used. false: Forcible transcoding is used.
TranscodeName	String	example.com	The main streaming domain.
CustomTranscodeParameters	Object		The custom transcoding configuration.
BitrateWithSource	Map		The source-based bitrate settings.
VideoProfile	String	high	The video encoding profile. Valid values: baseline: suitable for mobile devices. main: suitable for standard-definition devices. high: suitable for high-definition devices.
AudioBitrate	Integer	64	The bitrate of the output audio. Unit: Kbit/s. Valid values: 1 to 1000.
Height	Integer	1200	The height of the output video.
RtsFlag	String	true	The Real-Time Transcoding (RTS) flag. Fixed value: true. Note This parameter is returned only if RTS is used for transcoding.
TemplateType	String	h264	The type of the custom transcoding template. Valid values: h264: custom H.264 standard transcoding h264-nbhd: custom H.264 Narrowband HD™ transcoding h265: custom H.265 standard transcoding h265-nbhd: custom H.265 Narrowband HD™ transcoding audio: audio-only transcoding
Bframes	String	0	Indicates whether B-frame removal is enabled. Fixed value: 0.
ExtWithSource	Map		Other source-based settings.
AudioRate	Integer	44100	The audio sampling rate. Valid values: 22050 to 96000. Note If the value of AudioProfile is aac_ld, the audio sampling rate cannot exceed 44100.
FpsWithSource	Map		The source-based frame rate settings.
AudioCodec	String	ACC	The audio encoding format.
FPS	Integer	15	The frame rate of the output video. Unit: frames per second (FPS).
Gop	String	10	The group of pictures (GOP) size of the output video. Unit: frames. Valid values: 1 to 3000.
Width	Integer	1000	The width of the output video.
VideoBitrate	Integer	3000	The bitrate of the output video. Unit: Kbit/s.
AudioChannelNum	Integer	2	The number of sound channels. Valid values: 1: mono 2: binaural
AudioProfile	String	aac_low	The audio encoding profile. Valid values: aac_low aac_he aac_he_v2 aac_ld
ResWithSource	Map		The source-based resolution settings.
EncryptParameters	Object		The encryption settings.
EncryptType	String	aliyun	The type of encryption. Set the value to aliyun.
KmsKeyID	String	afce5722-81d2-43c3-9930-7601da11****	The ID of the customer master key (CMK) in Key Management Service (KMS).
KmsKeyExpireInterval	String	3600	The rotation period of the CMK. Valid values: 60 to 3600. Unit: seconds.

Examples

Sample requests

http(s)://live.aliyuncs.com/?Action=DescribeLiveStreamTranscodeInfo
&DomainTranscodeName=example.com
&AppName=myapp
&<Common request parameters>

Sample success responses

XML format

HTTP/1.1 200 OK
Content-Type:application/xml

<DescribeLiveStreamTranscodeInfoResponse>
    <RequestId>62136AE6-7793-45ED-B14A-60D19A9486D3</RequestId>
    <DomainTranscodeList>
        <TranscodeApp>liveApp****</TranscodeApp>
        <TranscodeTemplate>lld</TranscodeTemplate>
        <IsLazy>true</IsLazy>
        <TranscodeName>example.com</TranscodeName>
        <CustomTranscodeParameters>
            <VideoProfile>high</VideoProfile>
            <AudioBitrate>64</AudioBitrate>
            <Height>1200</Height>
            <RtsFlag>true</RtsFlag>
            <TemplateType>h264</TemplateType>
            <Bframes>0</Bframes>
            <AudioRate>44100</AudioRate>
            <AudioCodec>ACC</AudioCodec>
            <FPS>15</FPS>
            <Gop>10</Gop>
            <Width>1000</Width>
            <VideoBitrate>3000</VideoBitrate>
            <AudioChannelNum>2</AudioChannelNum>
            <AudioProfile>aac_low</AudioProfile>
        </CustomTranscodeParameters>
        <EncryptParameters>
            <EncryptType>aliyun</EncryptType>
            <KmsKeyID>afce5722-81d2-43c3-9930-7601da11****</KmsKeyID>
            <KmsKeyExpireInterval>3600</KmsKeyExpireInterval>
        </EncryptParameters>
    </DomainTranscodeList>
</DescribeLiveStreamTranscodeInfoResponse>

JSON format

HTTP/1.1 200 OK
Content-Type:application/json

{
  "RequestId" : "62136AE6-7793-45ED-B14A-60D19A9486D3",
  "DomainTranscodeList" : {
    "TranscodeApp" : "liveApp****",
    "TranscodeTemplate" : "lld",
    "IsLazy" : true,
    "TranscodeName" : "example.com",
    "CustomTranscodeParameters" : {
      "VideoProfile" : "high",
      "AudioBitrate" : 64,
      "Height" : 1200,
      "RtsFlag" : true,
      "TemplateType" : "h264",
      "Bframes" : 0,
      "AudioRate" : 44100,
      "AudioCodec" : "ACC",
      "FPS" : 15,
      "Gop" : 10,
      "Width" : 1000,
      "VideoBitrate" : 3000,
      "AudioChannelNum" : 2,
      "AudioProfile" : "aac_low"
    },
    "EncryptParameters" : {
      "EncryptType" : "aliyun",
      "KmsKeyID" : "afce5722-81d2-43c3-9930-7601da11****",
      "KmsKeyExpireInterval" : 3600
    }
  }
}

Error codes

For a list of error codes, see Service error codes.