可灵专业级视频

具备先进运动控制能力的专业视频生成。提供 v1 至 v2.1 模型，支持标准和专业模式。

身份验证

要通过 Doitong API 访问 可灵 (Kling)，请使用您的 Doitong API 密钥。请将其包含在 GraphQL mutation 或 REST API 请求头中。

// GraphQL Header
{
  "Authorization": "Bearer YOUR_API_KEY"
}

// REST Header
"X-API-Key": "YOUR_API_KEY"

快速开始

只需几分钟即可上手 Kling API。按照以下简单步骤生成您的第一个 text to video。

步骤 1：获取 API 密钥

注册 Doitong 账号并前往控制台生成 API 密钥。

步骤 2：发起首次请求

使用下方的代码示例发起您的第一次 API 调用。

curl -X POST https://api.doitong.com/graphql \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Idempotency-Key: unique-request-id-123" \
  -d '{
    "query": "mutation Generate($input: GenerateInput!) { generate(input: $input) { id status type provider url metadata creditCost } }",
    "variables": {
      "input": {
        "type": "VIDEO",
        "provider": "kling",
        "input": {
          "text": "A serene landscape with mountains and a lake at sunset"
        },
        "options": {
          "duration": 5,
          "aspectRatio": "16:9"
        }
      }
    }
  }'

const response = await fetch('https://api.doitong.com/graphql', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'Authorization': 'Bearer YOUR_API_KEY',
    'Idempotency-Key': 'unique-request-id-123'
  },
  body: JSON.stringify({
    query: `
      mutation Generate($input: GenerateInput!) {
        generate(input: $input) {
          id
          status
          type
          provider
          url
          metadata
          creditCost
        }
      }
    `,
    variables: {
      input: {
        type: 'VIDEO',
        provider: 'kling',
        input: {
          text: 'A serene landscape with mountains and a lake at sunset'
        },
        options: {
          duration: 5,
          aspectRatio: '16:9'
        }
      }
    }
  })
});

const data = await response.json();
console.log('Result:', data.data.generate);

import requests
import json

url = "https://api.doitong.com/graphql"
headers = {
    "Content-Type": "application/json",
    "Authorization": "Bearer YOUR_API_KEY"
}

query = """
mutation Generate($input: GenerateInput!) {
  generate(input: $input) {
    id
    status
    type
    provider
    url
    metadata
    creditCost
  }
}
"""

variables = {
    "input": {
        "type": "VIDEO",
        "provider": "kling",
        "input": {
            "text": "A serene landscape with mountains and a lake at sunset"
        },
        "options": {
            "duration": 5,
            "aspectRatio": "16:9"
        }
    }
}

response = requests.post(url, json={
    "query": query,
    "variables": variables
}, headers=headers)

data = response.json()
print("Result:", data["data"]["generate"])

mutation Generate($input: GenerateInput!) {
  generate(input: $input) {
    id
    status
    type
    provider
    url
    metadata
    creditCost
    createdAt
  }
}

# Variables
{
  "input": {
    "type": "VIDEO",
    "provider": "kling",
    "input": {
      "text": "A serene landscape with mountains and a lake at sunset"
    },
    "options": {
      "duration": 5,
      "aspectRatio": "16:9",
      "version": "2.1-master",
      "quality": "high"
    }
  }
}

价格方案

Kling API 采用基于积分的计费模式。积分消耗取决于生成内容的复杂程度和时长。

API 端点

Kling API 可通过我们的统一 GraphQL 端点访问。

GraphQL 端点

POST https://api.doitong.com/graphql

REST 端点

POST https://api.doitong.com/v1/text_to_video

参数

Kling API 请求的可用参数：

响应格式

所有 API 响应均遵循统一格式：

成功响应

{
  "data": {
    "generatevideo": {
      "id": "abc123xyz",
      "status": "processing",
      "url": null,
      "webhookUrl": "https://your-webhook.com/callback",
      "createdAt": "2024-01-01T00:00:00Z"
    }
  }
}

完成响应

{
  "data": {
    "generatevideo": {
      "id": "abc123xyz",
      "status": "completed",
      "url": "https://cdn.doitong.com/outputs/abc123xyz.mp4",
      "duration": 5,
      "createdAt": "2024-01-01T00:00:00Z"
    }
  }
}

错误处理

API 使用标准 HTTP 状态码并返回详细的错误信息。

常见错误代码

错误响应格式

{
  "errors": [
    {
      "message": "Insufficient credits for this operation",
      "extensions": {
        "code": "INSUFFICIENT_CREDITS",
        "creditsRequired": 100,
        "creditsAvailable": 50
      }
    }
  ]
}

Webhooks

在 text to video 生成完成后接收实时通知。

设置 Webhooks

Include a <code>webhookUrl</code> parameter in your request to receive a POST notification when processing is complete.

Webhook 负载

{
  "id": "abc123xyz",
  "status": "completed",
  "url": "https://cdn.doitong.com/outputs/abc123xyz.mp4",
  "service": "kling",
  "createdAt": "2024-01-01T00:00:00Z",
  "completedAt": "2024-01-01T00:01:00Z",
  "metadata": {
    "duration": 5,
    "width": 1920,
    "height": 1080
  }
}

Webhook 安全

所有 Webhook 请求都包含一个用于验证的签名请求头：

X-Doitong-Signature: sha256=abc123...

速率限制

为确保公平使用和系统稳定性，适用以下速率限制：

最佳实践

1. 优化提示词 (Prompts)

编写清晰、描述性的提示词以获得最佳效果：

• Be specific about visual elements, style, and mood
• Include details about lighting, camera angles, and composition
• Avoid contradictory or impossible requests

2. 处理异步流程

生成过程是异步的。请实现适当的轮询或 Webhook：

// Polling example
async function pollStatus(jobId) {
  let status = 'processing';
  while (status === 'processing') {
    await sleep(2000); // Wait 2 seconds
    const result = await checkJobStatus(jobId);
    status = result.status;
  }
  return result;
}

3. 错误恢复

实现带有指数退避机制的重试逻辑：

async function retryWithBackoff(fn, maxRetries = 3) {
  for (let i = 0; i < maxRetries; i++) {
    try {
      return await fn();
    } catch (error) {
      if (i === maxRetries - 1) throw error;
      await sleep(Math.pow(2, i) * 1000);
    }
  }
}

4. 监控积分使用情况

追踪您的积分消耗以避免服务中断：

• Check credit balance before large batch operations
• Set up alerts for low credit thresholds
• Implement credit-aware request queuing

准备好开始了吗？

加入成千上万名开发者的行列，使用 Kling API 创作精彩内容