> ## Documentation Index
> Fetch the complete documentation index at: https://docs.apimart.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Wan2.7-R2V 参考生视频

>  - 阿里云万相 2.7 参考生视频模型
- 基于一张或多张参考图片/视频，生成与其风格、人物、场景一致的新视频
- 支持角色一致性、风格迁移、多素材组合
- 支持参考音色（reference_voice）控制角色声音 

<RequestExample>
  ```bash cURL theme={null}
  curl --request POST \
    --url https://api.apimart.ai/v1/videos/generations \
    --header 'Authorization: Bearer <token>' \
    --header 'Content-Type: application/json' \
    --data '{
      "model": "wan2.7-r2v",
      "prompt": "这个人走在街上，四周车水马龙",
      "image_with_roles": [{"url": "https://cdn.example.com/character.jpg", "role": "reference_image"}],
      "resolution": "1080P",
      "duration": 8
    }'
  ```

  ```python Python theme={null}
  import requests

  url = "https://api.apimart.ai/v1/videos/generations"

  payload = {
      "model": "wan2.7-r2v",
      "prompt": "这个人走在街上，四周车水马龙",
      "image_with_roles": [{"url": "https://cdn.example.com/character.jpg", "role": "reference_image"}],
      "resolution": "1080P",
      "duration": 8
  }

  headers = {
      "Authorization": "Bearer <token>",
      "Content-Type": "application/json"
  }

  response = requests.post(url, json=payload, headers=headers)

  print(response.json())
  ```

  ```javascript JavaScript theme={null}
  const url = "https://api.apimart.ai/v1/videos/generations";

  const payload = {
    model: "wan2.7-r2v",
    prompt: "这个人走在街上，四周车水马龙",
    image_with_roles: [{ url: "https://cdn.example.com/character.jpg", role: "reference_image" }],
    resolution: "1080P",
    duration: 8
  };

  const headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
  };

  fetch(url, {
    method: "POST",
    headers: headers,
    body: JSON.stringify(payload)
  })
    .then(response => response.json())
    .then(data => console.log(data))
    .catch(error => console.error('Error:', error));
  ```

  ```go Go theme={null}
  package main

  import (
      "bytes"
      "encoding/json"
      "fmt"
      "io/ioutil"
      "net/http"
  )

  func main() {
      url := "https://api.apimart.ai/v1/videos/generations"

      payload := map[string]interface{}{
          "model":  "wan2.7-r2v",
          "prompt": "这个人走在街上，四周车水马龙",
          "image_with_roles": []map[string]string{
              {"url": "https://cdn.example.com/character.jpg", "role": "reference_image"},
          },
          "resolution": "1080P",
          "duration":   8,
      }

      jsonData, _ := json.Marshal(payload)

      req, _ := http.NewRequest("POST", url, bytes.NewBuffer(jsonData))
      req.Header.Set("Authorization", "Bearer <token>")
      req.Header.Set("Content-Type", "application/json")

      client := &http.Client{}
      resp, err := client.Do(req)
      if err != nil {
          panic(err)
      }
      defer resp.Body.Close()

      body, _ := ioutil.ReadAll(resp.Body)
      fmt.Println(string(body))
  }
  ```

  ```java Java theme={null}
  import java.net.http.HttpClient;
  import java.net.http.HttpRequest;
  import java.net.http.HttpResponse;
  import java.net.URI;

  public class Main {
      public static void main(String[] args) throws Exception {
          String url = "https://api.apimart.ai/v1/videos/generations";

          String payload = """
          {
            "model": "wan2.7-r2v",
            "prompt": "这个人走在街上，四周车水马龙",
            "image_with_roles": [{"url": "https://cdn.example.com/character.jpg", "role": "reference_image"}],
            "resolution": "1080P",
            "duration": 8
          }
          """;

          HttpClient client = HttpClient.newHttpClient();
          HttpRequest request = HttpRequest.newBuilder()
              .uri(URI.create(url))
              .header("Authorization", "Bearer <token>")
              .header("Content-Type", "application/json")
              .POST(HttpRequest.BodyPublishers.ofString(payload))
              .build();

          HttpResponse<String> response = client.send(request,
              HttpResponse.BodyHandlers.ofString());

          System.out.println(response.body());
      }
  }
  ```

  ```php PHP theme={null}
  <?php

  $url = "https://api.apimart.ai/v1/videos/generations";

  $payload = [
      "model" => "wan2.7-r2v",
      "prompt" => "这个人走在街上，四周车水马龙",
      "image_with_roles" => [["url" => "https://cdn.example.com/character.jpg", "role" => "reference_image"]],
      "resolution" => "1080P",
      "duration" => 8
  ];

  $ch = curl_init($url);
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
  curl_setopt($ch, CURLOPT_POST, true);
  curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($payload));
  curl_setopt($ch, CURLOPT_HTTPHEADER, [
      "Authorization: Bearer <token>",
      "Content-Type: application/json"
  ]);

  $response = curl_exec($ch);
  curl_close($ch);

  echo $response;
  ?>
  ```

  ```ruby Ruby theme={null}
  require 'net/http'
  require 'json'
  require 'uri'

  url = URI("https://api.apimart.ai/v1/videos/generations")

  payload = {
    model: "wan2.7-r2v",
    prompt: "这个人走在街上，四周车水马龙",
    image_with_roles: [{ url: "https://cdn.example.com/character.jpg", role: "reference_image" }],
    resolution: "1080P",
    duration: 8
  }

  http = Net::HTTP.new(url.host, url.port)
  http.use_ssl = true

  request = Net::HTTP::Post.new(url)
  request["Authorization"] = "Bearer <token>"
  request["Content-Type"] = "application/json"
  request.body = payload.to_json

  response = http.request(request)
  puts response.body
  ```

  ```swift Swift theme={null}
  import Foundation

  let url = URL(string: "https://api.apimart.ai/v1/videos/generations")!

  let payload: [String: Any] = [
      "model": "wan2.7-r2v",
      "prompt": "这个人走在街上，四周车水马龙",
      "image_with_roles": [["url": "https://cdn.example.com/character.jpg", "role": "reference_image"]],
      "resolution": "1080P",
      "duration": 8
  ]

  var request = URLRequest(url: url)
  request.httpMethod = "POST"
  request.setValue("Bearer <token>", forHTTPHeaderField: "Authorization")
  request.setValue("application/json", forHTTPHeaderField: "Content-Type")
  request.httpBody = try? JSONSerialization.data(withJSONObject: payload)

  let task = URLSession.shared.dataTask(with: request) { data, response, error in
      if let error = error {
          print("Error: \(error)")
          return
      }

      if let data = data, let responseString = String(data: data, encoding: .utf8) {
          print(responseString)
      }
  }

  task.resume()
  ```

  ```csharp C# theme={null}
  using System;
  using System.Net.Http;
  using System.Text;
  using System.Threading.Tasks;

  class Program
  {
      static async Task Main(string[] args)
      {
          var url = "https://api.apimart.ai/v1/videos/generations";

          var payload = @"{
              ""model"": ""wan2.7-r2v"",
              ""prompt"": ""这个人走在街上，四周车水马龙"",
              ""image_with_roles"": [{""url"": ""https://cdn.example.com/character.jpg"", ""role"": ""reference_image""}],
              ""resolution"": ""1080P"",
              ""duration"": 8
          }";

          using var client = new HttpClient();
          client.DefaultRequestHeaders.Add("Authorization", "Bearer <token>");

          var content = new StringContent(payload, Encoding.UTF8, "application/json");
          var response = await client.PostAsync(url, content);
          var result = await response.Content.ReadAsStringAsync();

          Console.WriteLine(result);
      }
  }
  ```
</RequestExample>

<ResponseExample>
  ```json 200 theme={null}
  {
    "code": 200,
    "data": [
      {
        "status": "submitted",
        "task_id": "task_01J9HA7JPQ9A0Z6JZ3V8M9W6PZ"
      }
    ]
  }
  ```

  ```json 400 theme={null}
  {
    "error": {
      "code": 400,
      "message": "请求参数无效",
      "type": "invalid_request_error"
    }
  }
  ```

  ```json 401 theme={null}
  {
    "error": {
      "code": 401,
      "message": "身份验证失败，请检查您的API密钥",
      "type": "authentication_error"
    }
  }
  ```

  ```json 402 theme={null}
  {
    "error": {
      "code": 402,
      "message": "账户余额不足，请充值后再试",
      "type": "payment_required"
    }
  }
  ```

  ```json 429 theme={null}
  {
    "error": {
      "code": 429,
      "message": "请求过于频繁，请稍后再试",
      "type": "rate_limit_error"
    }
  }
  ```

  ```json 500 theme={null}
  {
    "error": {
      "code": 500,
      "message": "服务器内部错误，请稍后重试",
      "type": "server_error"
    }
  }
  ```
</ResponseExample>

## 认证

<ParamField header="Authorization" type="string" required>
  所有接口均需要使用 Bearer Token 进行认证

  获取 API Key：

  访问 [API Key 管理页面](https://apimart.ai/keys) 获取您的 API Key

  使用时在请求头中添加：

  ```
  Authorization: Bearer YOUR_API_KEY
  ```
</ParamField>

## 请求参数

<ParamField body="model" type="string" required>
  视频生成模型名称，固定为 `wan2.7-r2v`
</ParamField>

<ParamField body="prompt" type="string" required>
  视频内容描述，最多 5000 字符

  多图/多视频时用"图1"、"图2"、"视频1"等序号指代对应参考素材（按传入顺序）

  示例：`"图1中的人物来到图2的场景中，环顾四周"`
</ParamField>

<ParamField body="image_with_roles" type="array<object>">
  带角色的图片数组，与 `video_urls` 至少传其一

  每个对象字段：

  * `url` (string)：图片 URL
  * `role` (string)：图片角色
    * `reference_image` - 参考图（默认）
    * `first_frame` - 指定首帧（传入后 `size` 参数无效，宽高比以首帧图片为准）
  * `reference_voice` (string，可选)：该参考角色的音色样本音频 URL，用于控制生成视频中角色的声音

  示例：

  ```json theme={null}
  [
    {
      "url": "https://cdn.example.com/character.jpg",
      "role": "reference_image",
      "reference_voice": "https://cdn.example.com/voice_sample.mp3"
    },
    { "url": "https://cdn.example.com/start.jpg", "role": "first_frame" }
  ]
  ```
</ParamField>

<ParamField body="video_urls" type="array<string>">
  参考视频 URL 数组，最多 5 条（图片 + 视频总数 ≤ 5）

  与 `image_with_roles` 至少传其一

  <Note>
    **视频限制：**

    * 格式：mp4、mov
    * 时长：1～30s
    * 分辨率：宽度和高度范围为 \[240, 4096] 像素
    * 宽高比：1:8 \~ 8:1
    * 文件大小：不超过 100MB
  </Note>
</ParamField>

<ParamField body="negative_prompt" type="string">
  反向提示词，描述不希望出现的内容，最多 500 字符
</ParamField>

<ParamField body="resolution" type="string" default="1080P">
  视频分辨率

  可选值：

  * `720P` - 标清
  * `1080P` - 高清（默认）
</ParamField>

<ParamField body="duration" type="integer" default="5">
  视频时长（秒）

  支持范围：`2` \~ `15` 秒

  默认值：`5`

  <Warning>
    当参考素材中包含视频时：取值为 \[2, 10] 之间的整数。

    当参考素材中不包含视频时：取值为 \[2, 15] 之间的整数。
  </Warning>
</ParamField>

<ParamField body="size" type="string" default="16:9">
  画面宽高比

  支持的格式：

  * `16:9` - 横版宽屏（默认）
  * `9:16` - 竖版长屏
  * `1:1` - 正方形
  * `4:3` - 横版
  * `3:4` - 竖版

  <Warning>
    当通过 `image_with_roles` 传入 `first_frame` 时，此参数将被忽略，宽高比以首帧图片为准
  </Warning>
</ParamField>

<ParamField body="prompt_extend" type="boolean" default="true">
  是否开启 prompt 智能改写

  对较短提示词效果提升明显，但会增加耗时

  默认值：`true`
</ParamField>

<ParamField body="watermark" type="boolean" default="false">
  是否在生成的视频上添加 "AI生成" 水印

  * `true`：添加水印
  * `false`：不添加水印（默认）
</ParamField>

<ParamField body="seed" type="integer">
  种子整数，用于控制生成内容的随机性

  取值范围：`≥0` 的整数

  <Note>
    * 相同的请求下，模型收到不同的 seed 值（如：不指定 seed 值），将生成不同的结果
    * 相同的请求下，模型收到相同的 seed 值，会生成类似的结果，但不保证完全一致
  </Note>
</ParamField>

## 响应

<ResponseField name="code" type="integer">
  响应状态码，成功时为 200
</ResponseField>

<ResponseField name="data" type="array">
  返回数据数组

  <Expandable title="数组元素">
    <ResponseField name="status" type="string">
      任务状态，初始提交时为 `submitted`
    </ResponseField>

    <ResponseField name="task_id" type="string">
      任务唯一标识符
    </ResponseField>
  </Expandable>
</ResponseField>

## 使用场景

### 场景 1：单参考图生成（最简）

```json theme={null}
{
  "model": "wan2.7-r2v",
  "prompt": "这个人走在街上，四周车水马龙",
  "image_with_roles": [
    { "url": "https://cdn.example.com/character.jpg", "role": "reference_image" }
  ]
}
```

### 场景 2：多参考图生成

```json theme={null}
{
  "model": "wan2.7-r2v",
  "prompt": "图1中的人物来到图2的场景中，学习图3的动作",
  "image_with_roles": [
    { "url": "https://cdn.example.com/person.jpg", "role": "reference_image" },
    { "url": "https://cdn.example.com/background.jpg", "role": "reference_image" },
    { "url": "https://cdn.example.com/pose.jpg", "role": "reference_image" }
  ],
  "resolution": "1080P",
  "duration": 8,
  "size": "16:9"
}
```

### 场景 3：基于参考视频生成

```json theme={null}
{
  "model": "wan2.7-r2v",
  "prompt": "以参考视频的风格，生成一段海边日落场景",
  "video_urls": ["https://cdn.example.com/style_reference.mp4"],
  "resolution": "720P",
  "duration": 8
}
```

### 场景 4：指定首帧 + 参考图

```json theme={null}
{
  "model": "wan2.7-r2v",
  "prompt": "参考人物从这个位置出发，向前走",
  "image_with_roles": [
    { "url": "https://cdn.example.com/character.jpg", "role": "reference_image" },
    { "url": "https://cdn.example.com/start.jpg", "role": "first_frame" }
  ],
  "resolution": "1080P",
  "duration": 8
}
```

### 场景 5：参考图 + 参考音色（精确方式）

```json theme={null}
{
  "model": "wan2.7-r2v",
  "prompt": "这个人走在街上，边走边说话",
  "image_with_roles": [
    {
      "url": "https://cdn.example.com/character.jpg",
      "role": "reference_image",
      "reference_voice": "https://cdn.example.com/voice_sample.mp3"
    }
  ],
  "resolution": "1080P",
  "duration": 10
}
```

## 图片指代规则

多张参考图时，在 `prompt` 中用数字序号指代：

* 第 1 张图 → "图1" 或 "第一张图"
* 第 1 个视频 → "视频1" 或 "第一个视频"

<Note>
  **查询任务结果**

  视频生成为异步任务，提交后会返回 `task_id`。使用 [获取任务状态](/cn/api-reference/tasks/status) 接口查询生成进度和结果。
</Note>