DetectVideoSubtitleArea

Last updated: 2026-07-02 11:34:01Download PDF

1. API Description

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

This API is used to quickly detect the hard subtitle area in a video file.

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: DetectVideoSubtitleArea.
Version	Yes	String	Common Params. The value used for this API: 2019-06-12.
Region	No	String	Common Params. This parameter is not required for this API.
InputInfo	Yes	MediaInputInfo	Input information, which supports only URL and COS.
VideoLanguage	No	String	Video language. If you know the language of the video, you can specify this parameter to improve the recognition accuracy. Enumeration values: zh_en: Chinese and English en: English ja: Japanese ko: Korean
UserExtPara	No	String	Extended parameter. This is left empty by default.

3. Output Parameters

Parameter Name	Type	Description
Width	Integer	Video width. Unit: px.
Height	Integer	Video height. Unit: px.
Result	Array of SubtitleArea	Detected subtitle box. If nothing is detected, the value is empty.
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 Triggering Subtitle Box Detection

Input Example

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

{
    "InputInfo": {
        "Type": "URL",
        "UrlInputInfo": {
            "Url": "http://*********************************************************************************************************************************************.mp4"
        }
    },
    "VideoLanguage": "zh_en",
    "UserExtPara": ""
}

Output Example

{
    "Response": {
        "Height": 1280,
        "Result": [
            {
                "Area": {
                    "LeftTopX": 64,
                    "LeftTopY": 748,
                    "RightBottomX": 576,
                    "RightBottomY": 791,
                    "Unit": 2
                },
                "Confidence": 70
            }
        ],
        "Width": 720,
        "RequestId": "4af4d815-d608-4aff-afb3-45f3b46563b0"
    }
}

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

Tencent Cloud CLI 3.0

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.GenerateResource	Resource generation failed.
InternalError	Internal error.
InternalError.RecognitionError	Recognition error.
InvalidParameter.InputInfo	Illegal input.
ResourceNotFound.DownloadError	Download failed.
ResourceNotFound.UserUnregister	The user is not registered.