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Video on Demand

ドキュメントVideo on Demand

DescribeFileAttributes

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最終更新日: 2026-05-19 11:51:25

1. API Description

Domain name for API request: vod.intl.tencentcloudapi.com.

This API is used to get file attributes asynchronously.

  • Currently, this API can only get the MD5 hash of a file.
  • If the file queried is in HLS or DASH format, the attributes of the index file will be returned.

A maximum of 20 requests can be initiated per second for this API.

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2. Input Parameters

The following request parameter list only provides API request parameters and some common parameters. For the complete common parameter list, see Common Request Parameters.

Parameter Name Required Type Description
Action Yes String Common Params. The value used for this API: DescribeFileAttributes.
Version Yes String Common Params. The value used for this API: 2018-07-17.
Region No String Common Params. This parameter is not required.
FileId Yes String media file ID
SubAppId No Integer VOD application ID. For customers who activate on-demand services after December 25, 2023, they must fill this field with the application ID when accessing resources in on-demand applications (whether it's the default application or a newly created application).
SessionId No String An identifier for deduplication. If there has been a request with the same identifier within the past 3 days, an error will be returned for the current request. The maximum length is 50 characters. Leaving it blank or using an empty string indicates no deduplication.
SessionContext No String Source context, which is used to pass through the user request information. The callback for task flow status changes will return the value of this field. The maximum length is 1,000 characters.
TasksPriority No Integer Task priority. The higher the value, the higher the priority. The value range is from -10 to 10. If left blank, the default value is 0.
ExtInfo No String Reserved field, used for special purpose.

3. Output Parameters

Parameter Name Type Description
TaskId String Task ID.
RequestId String The unique request ID, generated by the server, will be returned for every request (if the request fails to reach the server for other reasons, the request will not obtain a RequestId). RequestId is required for locating a problem.

4. Example

Example1 Initiating a task to get the attributes of a file

This example shows you how to initiate a task to get the attributes of the file whose file ID is 5285485487985271487.

Input Example

POST / HTTP/1.1
Host: vod.intl.tencentcloudapi.com
Content-Type: application/json
X-TC-Action: DescribeFileAttributes
<Common request parameters>

{
    "FileId": "5285485487985271487"
}

Output Example

{
    "Response": {
        "RequestId": "6ca31e3a-6b8e-4b4e-9256-fdc700064ef3",
        "TaskId": "125xxx65-DescribeFileAttributes-bffb15f07530b57bc1aabb01fac74bca"
    }
}

5. Developer Resources

SDK

TencentCloud API 3.0 integrates SDKs that support various programming languages to make it easier for you to call APIs.

Command Line Interface

6. Error Code

The following only lists the error codes related to the API business logic. For other error codes, see Common Error Codes.

Error Code Description
FailedOperation Operation failed.
FailedOperation.InvalidVodUser The VOD service is not activated.
FailedOperation.TaskDuplicate Operation failed: the task already exists.
InternalError Internal error.
InternalError.GetFileInfoError Internal error: an error occurred while getting media file information.
InvalidParameter Invalid parameter.
InvalidParameterValue Incorrect parameter value.
InvalidParameterValue.FileId The FileId does not exist.
InvalidParameterValue.SessionContextTooLong SessionContext is too long.
InvalidParameterValue.SessionId The deduplication ID already exists. The request is removed due to duplication.
InvalidParameterValue.SessionIdTooLong SessionId is too long.
InvalidParameterValue.SubAppId Incorrect parameter value: application id.
UnauthorizedOperation Unauthorized operation.

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