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Meidede - Video Low-Light Denoising and Quality Adjustment

Description

This API provides video low-light denoising and image quality adjustment. It reduces noise and adjusts brightness in low-light videos to improve visual quality, returning the processed video.

Version

1.0

Media Requirements

The input media must be a video. The source documentation does not specify restrictions on video format, dimensions, file size, or duration.

API URL

Production environment: https://openapi.meitu.com Task submission endpoint: https://openapi.meitu.com/api/v1/sdk/sync/push Task name (task): /v1/lowlightvideo/491339 Task type (task_type): formula

Method

POST

Content-Type: application/json

Authentication

Open Platform API Signature

Request Parameters

RequiredParameterTypeDescription
YesparamsstringAlgorithm parameters as a JSON string
Yesinit_imagesobject[]List of media files; this API accepts one video
YestaskstringFixed value: /v1/lowlightvideo/491339
Yestask_typestringFixed value: formula
Nosync_timeoutintSynchronization timeout; default: 30

The init_images media file parameters are described below.

RequiredParameterTypeDescription
YesurlstringVideo URL or base64-encoded data
YesprofileobjectMedia attribute description

The profile attributes are described below.

RequiredParameterTypeDescription
Yesmedia_profilesobjectMedia attribute information
YesversionstringFixed value: v1

The media_profiles attributes are described below.

RequiredParameterTypeDescription
Yesmedia_data_typestringurl indicates a URL; the corresponding media type indicates base64-encoded data

The params inference parameter is a JSON string with the following structure.

RequiredFieldTypeDescription
Norsp_media_typestringDefault: url, indicating that the response media is returned as a URL
YesparameterobjectCore algorithm parameters object

Details of the parameter algorithm parameters:

The source documentation does not provide any additional core algorithm parameters. Pass an empty object {} as parameter.

Request Example

{
  "task": "/v1/lowlightvideo/491339",
  "task_type": "formula",
  "init_images": [
    {
      "url": "https://obs.mtlab.meitu.com/public/EtRGxLI8ulQ43pGhuZfym9aYUD2PUbMP/MTc1MDY1ODQwMA==/84d6e060-4ff2-49ba-5248-0a93d661b9d2.mp4",
      "profile": {
        "media_profiles": {
          "media_data_type": "url"
        },
        "version": "v1"
      }
    }
  ],
  "params": "{\"rsp_media_type\":\"url\",\"parameter\":{}}",
  "sync_timeout": 30
}

Response Fields

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FieldTypeDescription
request_idstringRequest identifier
trace_idstringTrace identifier
codeintBusiness status code; 0 indicates that the request was accepted successfully
error_codeintError code; 0 indicates success
messagestringBusiness message
tipsanyAdditional information; may be null
dataobjectTask status and algorithm results

Fields in the data object:

FieldTypeDescription
statusintStatus code: -1, task not found; 0, created successfully; 1, processing; 2, failed; 9, timed out—use the Query API; 10, succeeded
resultobjectAlgorithm result
progressnumberTask progress
predict_elapsedintEstimated processing time in milliseconds
create_timeint64Creation timestamp in milliseconds
task_idstringTask ID
custom_task_idstringClient-defined task ID
trace_idstringTrace identifier
client_infostringClient information
init_imagesobject[]/nullEcho of the input media

Fields in the result object:

FieldTypeDescription
idstringUnique task identifier
urlsstring[]List of output media URLs
imagesstring[]List of output media; equivalent to urls
parametersobjectAlgorithm parameter information
dataobjectDetailed data returned by the algorithm
msgstringResponse message
msg_idstringMessage ID
mtlab_resobjectUnderlying algorithm result
media_info_listobject[]List of output media information

Fields in result.data:

FieldTypeDescription
durationobjectProcessing-time statistics for each stage
error_codenumberAlgorithm error code; 0 indicates success and 20001 indicates a processing error
error_msgstringAlgorithm error message; PROCESS_ERROR indicates a processing error
extraobjectExtended fields
media_info_listobject[]List of media information
msg_idstringMessage ID
parameterobjectEcho of the parameters

Fields in duration:

FieldTypeDescription
alg_process_timenumberAlgorithm processing time in milliseconds
created_timestampnumberTask creation timestamp in seconds
pull_timestampnumberResource retrieval timestamp in seconds
repost_timenumberRetry time
upload_timenumberUpload time in milliseconds
waiting_timenumberQueue wait time in milliseconds

Fields in extra:

FieldTypeDescription
algo_msgobjectAlgorithm processing information
sale_pathstringBusiness path identifier
trans_metaobjectTranscoding metadata

Fields in algo_msg:

FieldTypeDescription
alg_timenumberInternal algorithm processing time in seconds

Fields in trans_meta:

FieldTypeDescription
req_metaobject[]List of request metadata
rsp_metaobject[]List of response metadata

Fields in the req_meta and rsp_meta array elements:

FieldTypeDescription
durationnumberMedia duration in milliseconds
media_typestringMedia type, such as video
data_ratenumberBit rate; included only in rsp_meta
frame_numnumberFrame count; included only in rsp_meta
frame_ratenumberFrame rate; included only in rsp_meta
heightnumberVideo height; included only in rsp_meta
widthnumberVideo width; included only in rsp_meta
sizenumberFile size; included only in rsp_meta
resolutionstringResolution tier; included only in rsp_meta

Fields in media_info_list:

FieldTypeDescription
media_datastringMedia data URL
media_extraobject/nullAdditional media information
media_profilesobjectMedia attributes

Fields in media_profiles:

FieldTypeDescription
media_data_typestringMedia data type; url indicates that the media data is a URL
media_data_widthnumberMedia width for video
media_data_heightnumberMedia height for video
media_data_fpsnumberVideo frame rate
media_data_sizenumberMedia file size in bytes
denoise_levelstringDenoising level, such as median

Fields in parameter and parameters:

FieldTypeDescription
rsp_media_typestringResponse media type; url indicates that a media URL is returned
versionstringVersion number

Fields in mtlab_res:

FieldTypeDescription
ErrorCodenumberUnderlying error code
ErrorMsgstringUnderlying error message
error_codenumberError code for compatibility
error_msgstringError message for compatibility
media_info_listobject[]/nullList of media information
msg_idstringMessage ID
parameterobject/nullParameter information

Response Examples

Successful Response Example

{
  "request_id": "",
  "trace_id": "",
  "code": 0,
  "error_code": 0,
  "message": "success",
  "tips": null,
  "data": {
    "status": 10,
    "result": {
      "id": "t_mt1a3i5n7bbcf05182-0838-4ca3-a0a3-b3b97135bf71",
      "urls": [
        "https://obs-large.mtlab.meitu.com/mtopen/ff56d688358849259556be0f50065a60/21ded4f9-9f09-44cb-7940-905d3973d314.mp4"
      ],
      "parameters": {
        "rsp_media_type": "url",
        "version": "LowLight version: 1.2.6 - hdvideov3环境"
      },
      "data": {
        "duration": {
          "alg_process_time": 14781,
          "created_timestamp": 1779438857,
          "pull_timestamp": 1779438857,
          "repost_time": 0,
          "upload_time": 212,
          "waiting_time": 22
        },
        "error_code": 0,
        "error_msg": "success",
        "extra": {
          "algo_msg": {
            "alg_time": 14.454841136932373
          },
          "sale_path": "/v1/videodenoise_async",
          "trans_meta": {
            "req_meta": [
              {
                "duration": 3440,
                "media_type": "video"
              }
            ],
            "rsp_meta": [
              {
                "data_rate": 17062.56118477858,
                "duration": 3440,
                "frame_num": 172,
                "frame_rate": 50,
                "height": 1080,
                "media_type": "video",
                "resolution": "1080P",
                "size": 7349492,
                "width": 1920
              }
            ]
          }
        },
        "media_info_list": [
          {
            "media_data": "https://obs-large.mtlab.meitu.com/mtopen/ff56d688358849259556be0f50065a60/21ded4f9-9f09-44cb-7940-905d3973d314.mp4",
            "media_extra": null,
            "media_profiles": {
              "denoise_level": "median",
              "media_data_fps": 50,
              "media_data_height": 1080,
              "media_data_size": 7349492,
              "media_data_type": "url",
              "media_data_width": 1920
            }
          }
        ],
        "msg_id": "33981341-2be6-4b4e-6637-r0094ba79502",
        "parameter": {
          "rsp_media_type": "url",
          "version": "LowLight version: 1.2.6 - hdvideov3环境"
        }
      },
      "msg": "success",
      "msg_id": "33981341-2be6-4b4e-6637-r0094ba79502",
      "images": [
        "https://obs-large.mtlab.meitu.com/mtopen/ff56d688358849259556be0f50065a60/21ded4f9-9f09-44cb-7940-905d3973d314.mp4"
      ],
      "mtlab_res": {
        "ErrorCode": 0,
        "ErrorMsg": "",
        "error_code": 0,
        "error_msg": "",
        "media_info_list": null,
        "msg_id": "33981341-2be6-4b4e-6637-r0094ba79502",
        "parameter": null
      },
      "media_info_list": [
        {
          "media_data": "https://obs-large.mtlab.meitu.com/mtopen/ff56d688358849259556be0f50065a60/21ded4f9-9f09-44cb-7940-905d3973d314.mp4",
          "media_extra": null,
          "media_profiles": {
            "denoise_level": "median",
            "media_data_fps": 50,
            "media_data_height": 1080,
            "media_data_size": 7349492,
            "media_data_type": "url",
            "media_data_width": 1920
          }
        }
      ]
    },
    "progress": 1,
    "predict_elapsed": 10000,
    "create_time": 1779438857660,
    "task_id": "t_mt1a3i5n7bbcf05182-0838-4ca3-a0a3-b3b97135bf71",
    "custom_task_id": "",
    "trace_id": "",
    "client_info": "",
    "init_images": null
  }
}

Polling Required Response Example

Use the Query API to retrieve the result.

Response Status: 200

content-type: application/json; charset=utf-8

{
  "request_id": "",
  "trace_id": "",
  "code": 0,
  "error_code": 0,
  "message": "success",
  "tips": null,
  "data": {
    "status": 9,
    "result": {},
    "progress": 0,
    "predict_elapsed": 10000,
    "create_time": 1779438857660,
    "task_id": "t_mt1a3i5n7bbcf05182-0838-4ca3-a0a3-b3b97135bf71",
    "custom_task_id": "",
    "trace_id": "",
    "client_info": "",
    "init_images": null
  }
}

Failed Response Example

Response Status: 400

content-type: application/json; charset=utf-8

{
  "request_id": "",
  "trace_id": "",
  "code": 0,
  "error_code": 0,
  "message": "success",
  "tips": null,
  "data": {
    "status": 2,
    "result": {
      "error_code": 20001,
      "error_msg": "PROCESS_ERROR"
    },
    "progress": 0,
    "predict_elapsed": 0,
    "create_time": 1779438857660,
    "task_id": "t_mt1a3i5n7bbcf05182-0838-4ca3-a0a3-b3b97135bf71",
    "custom_task_id": "",
    "trace_id": "",
    "client_info": "",
    "init_images": null
  }
}

General Error Codes

See API Error Codes for details.

SDK Examples

Python

import json

import requests
from sign_sdk import sign

def api_call_example():
    key = "your_api_key"
    secret = "your_api_secret"
    url = "https://openapi.meitu.com/api/v1/sdk/sync/push"
    method = "POST"

    headers = {
        "Content-Type": "application/json",
        sign.HeaderHost: "openapi.meitu.com",
    }
    inner_params = {
        "rsp_media_type": "url",
        "parameter": {},
    }
    payload = {
        "task": "/v1/lowlightvideo/491339",
        "task_type": "formula",
        "init_images": [
            {
                "url": "https://obs.mtlab.meitu.com/public/EtRGxLI8ulQ43pGhuZfym9aYUD2PUbMP/MTc1MDY1ODQwMA==/84d6e060-4ff2-49ba-5248-0a93d661b9d2.mp4",
                "profile": {
                    "media_profiles": {"media_data_type": "url"},
                    "version": "v1",
                },
            }
        ],
        "params": json.dumps(inner_params, ensure_ascii=False),
        "sync_timeout": 30,
    }
    body = json.dumps(payload, ensure_ascii=False)

    signer = sign.Signer(key, secret)
    signed_request = signer.sign(url, method, headers, body)
    response = requests.Session().send(signed_request)
    print(f"Status: {response.status_code}")
    print(f"Response: {response.text}")

if __name__ == "__main__":
    api_call_example()

Go

package main

import (
	"fmt"
	"io"
	"net/http"

	"github.com/mtlab/api/signer"
)

func main() {
	key := "your_api_key"
	secret := "your_api_secret"
	signObj := signer.NewSigner(key, secret)

	url := "https://openapi.meitu.com/api/v1/sdk/sync/push"
	method := http.MethodPost
	headers := make(http.Header)
	headers.Set(signer.HeaderHost, "openapi.meitu.com")
	headers.Set("Content-Type", "application/json")

	body := `{
  "task": "/v1/lowlightvideo/491339",
  "task_type": "formula",
  "init_images": [{
    "url": "https://obs.mtlab.meitu.com/public/EtRGxLI8ulQ43pGhuZfym9aYUD2PUbMP/MTc1MDY1ODQwMA==/84d6e060-4ff2-49ba-5248-0a93d661b9d2.mp4",
    "profile": {
      "media_profiles": {"media_data_type": "url"},
      "version": "v1"
    }
  }],
  "params": "{\"rsp_media_type\":\"url\",\"parameter\":{}}",
  "sync_timeout": 30
}`

	req, err := signObj.Sign(url, method, headers, body)
	if err != nil {
		fmt.Println("Failed to sign request:", err)
		return
	}

	resp, err := http.DefaultClient.Do(req)
	if err != nil {
		fmt.Println("Failed to send request:", err)
		return
	}
	defer resp.Body.Close()

	responseBody, err := io.ReadAll(resp.Body)
	if err != nil {
		fmt.Println("Read response failed:", err)
		return
	}
	fmt.Println("Response:", resp.StatusCode, string(responseBody))
}

PHP

<?php
require 'signer.php';

$key = 'your_api_key';
$secret = 'your_api_secret';
$signer = new Signer($key, $secret);

$url = 'https://openapi.meitu.com/api/v1/sdk/sync/push';
$method = 'POST';
$headers = ['Content-Type' => 'application/json'];

$innerParams = json_encode([
    'rsp_media_type' => 'url',
    'parameter' => new stdClass(),
]);

$body = json_encode([
    'task' => '/v1/lowlightvideo/491339',
    'task_type' => 'formula',
    'init_images' => [
        [
            'url' => 'https://obs.mtlab.meitu.com/public/EtRGxLI8ulQ43pGhuZfym9aYUD2PUbMP/MTc1MDY1ODQwMA==/84d6e060-4ff2-49ba-5248-0a93d661b9d2.mp4',
            'profile' => [
                'media_profiles' => ['media_data_type' => 'url'],
                'version' => 'v1',
            ],
        ],
    ],
    'params' => $innerParams,
    'sync_timeout' => 30,
]);

$curl = $signer->sign($url, $method, $headers, $body);
$response = curl_exec($curl);
$status = curl_getinfo($curl, CURLINFO_HTTP_CODE);

if ($status === 0) {
    echo 'Error: ' . curl_error($curl);
} else {
    echo "Status: {$status}\n";
    echo "Response: {$response}\n";
}
curl_close($curl);
?>

Java

package com.meitu.openai.common;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.nio.charset.StandardCharsets;
import java.util.HashMap;
import java.util.Map;

public class Main {
    public static void main(String[] args) throws Exception {
        Signer signer = new Signer("your_api_key", "your_api_secret");
        String url = "https://openapi.meitu.com/api/v1/sdk/sync/push";
        String method = "POST";

        Map<String, String> headers = new HashMap<>();
        headers.put("Content-Type", "application/json");
        headers.put(Signer.HeaderHost, "openapi.meitu.com");

        String body = "{\n" +
                "  \"task\": \"/v1/lowlightvideo/491339\",\n" +
                "  \"task_type\": \"formula\",\n" +
                "  \"init_images\": [{\n" +
                "    \"url\": \"https://obs.mtlab.meitu.com/public/EtRGxLI8ulQ43pGhuZfym9aYUD2PUbMP/MTc1MDY1ODQwMA==/84d6e060-4ff2-49ba-5248-0a93d661b9d2.mp4\",\n" +
                "    \"profile\": {\n" +
                "      \"media_profiles\": {\"media_data_type\": \"url\"},\n" +
                "      \"version\": \"v1\"\n" +
                "    }\n" +
                "  }],\n" +
                "  \"params\": \"{\\\"rsp_media_type\\\":\\\"url\\\",\\\"parameter\\\":{}}\",\n" +
                "  \"sync_timeout\": 30\n" +
                "}";

        Map<String, String> signedHeaders = signer.sign(url, method, headers, body);
        HttpURLConnection connection = (HttpURLConnection) new URL(url).openConnection();
        connection.setRequestMethod(method);
        for (Map.Entry<String, String> entry : signedHeaders.entrySet()) {
            connection.setRequestProperty(entry.getKey(), entry.getValue());
        }
        connection.setDoOutput(true);
        connection.getOutputStream().write(body.getBytes(StandardCharsets.UTF_8));

        int status = connection.getResponseCode();
        InputStream stream = status >= 400
                ? connection.getErrorStream()
                : connection.getInputStream();
        try (BufferedReader reader = new BufferedReader(new InputStreamReader(stream))) {
            StringBuilder response = new StringBuilder();
            String line;
            while ((line = reader.readLine()) != null) {
                response.append(line);
            }
            System.out.println("Response: " + status + " " + response);
        }
    }
}