DescribeCasterVideoResources - ApsaraVideo Live - Alibaba Cloud Documentation Center

Queries the input sources of a production studio.

Usage notes

You can call the CreateCaster operation to create a production studio and then call this operation to query the input sources of the production studio.

QPS limit

You can call this operation up to 15 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 limit on an API operation in ApsaraVideo Live.

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	DescribeCasterVideoResources	The operation that you want to perform. Set the value to DescribeCasterVideoResources.
CasterId	String	Yes	LIVEPRODUCER_POST-cn-0pp1czt****	The ID of the production studio. If the production studio was created by calling the CreateCaster operation, check the value of the response parameter CasterId to obtain the ID. If the production studio was created by using the ApsaraVideo Live console, obtain the ID on the Production Studio Management page. To go to the page, log on to the ApsaraVideo Live console and click Production Studios in the left-side navigation pane. Note You can find the ID of the production studio in the Instance Name column.

Response parameters


Parameter	Type	Example	Description
Total	Integer	2	The total number of entries returned.
RequestId	String	CF60DB6A-7FD6-426E-9288-122CC1A52FA7	The ID of the request.
VideoResources	Array of VideoResource		Details about the input sources.
VideoResource
EndOffset	Integer	10000	The offset of the position where the system stops reading the video file. This parameter takes effect only if the input source is a video file. Unit: milliseconds. A value greater than 0 indicates an offset from the first frame. A value smaller than 0 indicates an offset from the last frame.
FlvUrl	String	http://guide.aliyundoc.com/example.org	The source URL.
BeginOffset	Integer	1000	The offset of the position where the system starts to read the video file. This parameter takes effect only if the input source is a video file. Unit: milliseconds. A value greater than 0 indicates an offset from the first frame.
PtsCallbackInterval	Integer	0	The interval between presentation timestamp (PTS) callbacks. If you set the value to 0, no PTS callbacks are returned. This parameter takes effect only if the input source is a video-on-demand (VOD) file.
MaterialId	String	d2c429cd907742ee8f6e76465ad3****	The ID of the material.
LocationId	String	RV01	The location of the input source.
LiveStreamUrl	String	rtmp://abcLive/appName/b5447c21fcfe444c9e9b6f7ba208****	The URL of the live stream.
VodUrl	String	http://developer.aliyundoc.com/caster1.flv	The URL of the VOD file. This parameter is returned only when the input source is an MP4, FLV, or TS file that is not from the media library.
ResourceId	String	b5f8c837-ceeb-424f-b30b-68e94e86****	The ID of the resource.
RepeatNum	Integer	0	The number of playback times after the first playback is complete. This parameter takes effect only when the input source is a video file. Valid values: 0 (default): The video file is played only once. -1: The video file is played in loop mode.
ResourceName	String	resource-Name1	The name of the resource.
ImageId	String	a089175eb5f4427684fc0715159a****	The ID of the image in the media library.
ImageUrl	String	http://learn.aliyundoc.com/AppName/image.jpg	The URL of the image.

Examples

Sample requests

http(s)://live.aliyuncs.com/?Action=DescribeCasterVideoResources
&CasterId=LIVEPRODUCER_POST-cn-0pp1czt****
&<Common request parameters>

Sample success responses

XML format

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

<?xml version="1.0" encoding="UTF-8" ?>
<DescribeCasterVideoResourcesResponse>
<RequestId>CF60DB6A-7FD6-426E-9288-122CC1A52FA7</RequestId>
<Total>2</Total>
<VideoResources>
    <VideoResource>
        <EndOffset>10000</EndOffset>
        <BeginOffset>1000</BeginOffset>
        <MaterialId>d2c429cd907742ee8f6e76465ad3****</MaterialId>
        <FlvUrl>http://guide.aliyundoc.com/example.org</FlvUrl>
        <ResourceId>b5f8c837-ceeb-424f-b30b-68e94e86****</ResourceId>
        <ResourceName>resource-Name1</ResourceName>
        <LocationId>RV01</LocationId>
        <RepeatNum>0</RepeatNum>
        <LiveStreamUrl>rtmp://abcLive/appName/b5447c21fcfe444c9e9b6f7ba208****</LiveStreamUrl>
        <PtsCallbackInterval>0</PtsCallbackInterval>
        <VodUrl>http://developer.aliyundoc.com/caster1.flv</VodUrl>
    </VideoResource>
</VideoResources>
</DescribeCasterVideoResourcesResponse>

JSON format

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

{
  "DescribeCasterVideoResourcesResponse" : {
    "RequestId" : "CF60DB6A-7FD6-426E-9288-122CC1A52FA7",
    "Total" : 2,
    "VideoResources" : {
      "VideoResource" : {
        "EndOffset" : 10000,
        "BeginOffset" : 1000,
        "MaterialId" : "d2c429cd907742ee8f6e76465ad3****",
        "FlvUrl" : "http://guide.aliyundoc.com/example.org",
        "ResourceId" : "b5f8c837-ceeb-424f-b30b-68e94e86****",
        "ResourceName" : "resource-Name1",
        "LocationId" : "RV01",
        "RepeatNum" : 0,
        "LiveStreamUrl" : "rtmp://abcLive/appName/b5447c21fcfe444c9e9b6f7ba208****",
        "PtsCallbackInterval" : 0,
        "VodUrl" : "http://developer.aliyundoc.com/caster1.flv"
      }
    }
  }
}

Error codes

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