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

# 结合 Comfy Router 使用 P Video 2

> 通过 Comfy Router 调用 pruna/p-video-2:介绍端点、请求结构以及 Router 返回的响应。

`pruna/p-video-2` 的 API 参考文档，由 Pruna 通过 Comfy Router 提供。

## 快速开始

在[你的 Comfy 工作区](https://platform.comfy.org/profile/api-keys)中创建一个密钥，并将其导出为 `COMFY_API_KEY`。Python 和 TypeScript 代码片段使用 Comfy SDK（`pip install comfy-sdk`、`npm install @comfyorg/sdk`）；cURL 代码片段是通过原始 HTTP 进行的同一调用。

**模型 ID：** `pruna/p-video-2`

**端点：** `POST https://api.comfy.org/v2/models/pruna/p-video-2`

<Tabs>
  <Tab title="Wait for the result">
    <CodeGroup>
      ```python Python theme={null}
      from comfy_sdk import Comfy

      # Reads COMFY_API_KEY from the environment.
      # The SDK automatically creates an idempotency key and reuses it for automatic retries.
      with Comfy() as client:
          result = client.models.run(
              "pruna/p-video-2",
              {
                  "input": {
                      "aspect_ratio": "16:9",
                      "draft": False,
                      "duration": 2,
                      "fps": 24,
                      "prompt": "A single red maple leaf resting on a plain white background.",
                      "resolution": "720p",
                  },
              },
          )

      print(result)
      ```

      ```typescript TypeScript theme={null}
      import { comfy } from "@comfyorg/sdk";

      // Reads COMFY_API_KEY from the environment.
      // The SDK automatically creates an idempotency key and reuses it for automatic retries.
      const { data } = await comfy.models.run("pruna/p-video-2", {
        input: {
          aspect_ratio: "16:9",
          draft: false,
          duration: 2,
          fps: 24,
          prompt: "A single red maple leaf resting on a plain white background.",
          resolution: "720p",
        },
      });

      console.log(data);
      ```

      ```bash cURL theme={null}
      curl https://api.comfy.org/v2/models/pruna/p-video-2 \
        -H "X-API-Key: $COMFY_API_KEY" \
        -H "Idempotency-Key: $(uuidgen)" \
        -H "Content-Type: application/json" \
        -d "{\"input\": {\"aspect_ratio\":\"16:9\",\"draft\":false,\"duration\":2,\"fps\":24,\"prompt\":\"A single red maple leaf resting on a plain white background.\",\"resolution\":\"720p\"}}"
      ```
    </CodeGroup>
  </Tab>

  <Tab title="Queue and collect later">
    <CodeGroup>
      ```python Python theme={null}
      from comfy_sdk import Comfy

      # Reads COMFY_API_KEY from the environment.
      # Each submit() call mints its own Idempotency-Key and reuses it for automatic retries.
      with Comfy() as client:
          handle = client.models.submit(
              "pruna/p-video-2",
              {
                  "input": {
                      "aspect_ratio": "16:9",
                      "draft": False,
                      "duration": 2,
                      "fps": 24,
                      "prompt": "A single red maple leaf resting on a plain white background.",
                      "resolution": "720p",
                  },
              },
          )
          print("request_id:", handle.request_id)  # with the model ID, all another process needs

          # Poll until the request completes, waiting the Retry-After the server names.
          for update in handle.iter_events():
              print(update.status, update.queue_position)

          # The provider's own payload, the same value models.run() returns.
          # A request that failed or was cancelled raises the typed Router error here.
          result = handle.get()

      print(result)
      ```

      ```typescript TypeScript theme={null}
      import { comfy } from "@comfyorg/sdk";

      // Reads COMFY_API_KEY from the environment.
      // Each submit() call mints its own Idempotency-Key and reuses it for automatic retries.
      const handle = await comfy.models.submit("pruna/p-video-2", {
        input: {
          aspect_ratio: "16:9",
          draft: false,
          duration: 2,
          fps: 24,
          prompt: "A single red maple leaf resting on a plain white background.",
          resolution: "720p",
        },
      });
      console.log("requestId:", handle.requestId); // with the model ID, all another process needs

      // Poll until the request completes, waiting the Retry-After the server names.
      for await (const update of handle.events()) {
        console.log(update.status, update.queuePosition);
      }

      // The same result models.run() returns. A request that failed or was cancelled rejects here.
      const result = await handle.get();

      console.log(result.data);
      ```

      ```bash cURL theme={null}
      # 1. Submit. Router answers 201 with request_id, status_url, response_url and cancel_url.
      curl https://api.comfy.org/v2/models/pruna/p-video-2/requests \
        -H "X-API-Key: $COMFY_API_KEY" \
        -H "Idempotency-Key: $(uuidgen)" \
        -H "Content-Type: application/json" \
        -d "{\"input\": {\"aspect_ratio\":\"16:9\",\"draft\":false,\"duration\":2,\"fps\":24,\"prompt\":\"A single red maple leaf resting on a plain white background.\",\"resolution\":\"720p\"}}"

      # 2. Poll until status is COMPLETED, waiting the Retry-After seconds each response names.
      REQUEST_ID="<request_id from the 201 body>"
      curl -i https://api.comfy.org/v2/models/pruna/p-video-2/requests/$REQUEST_ID/status \
        -H "X-API-Key: $COMFY_API_KEY"

      # 3. Collect. 200 with the model's native output, 202 with the status body while it is still running.
      curl https://api.comfy.org/v2/models/pruna/p-video-2/requests/$REQUEST_ID \
        -H "X-API-Key: $COMFY_API_KEY"
      ```
    </CodeGroup>
  </Tab>
</Tabs>

## Schema

### 输入

<ParamField body="input" type="object" required>
  P-Video-2 生成参数。生成按已完成视频的秒数计费，以返回的文件为准，费率由 `resolution` 和 `draft` 决定。安全过滤始终开启；请求中的 `disable_safety_filter` 值会被忽略。
</ParamField>

<ParamField body="input.aspect_ratio" type="string" default="&#x22;16:9&#x22;">
  宽高比：16:9、9:16、4:3、3:4、3:2、2:3 或 1:1。当设置了 `image` 时忽略。
</ParamField>

<ParamField body="input.audio" type="string">
  用于条件化生成的输入音频 URI（flac、mp3 或 wav）。输出时长跟随音频。
</ParamField>

<ParamField body="input.draft" type="boolean" default="false">
  更快、质量更低的预览，按 draft 费率计费。
</ParamField>

<ParamField body="input.duration" type="integer">
  所生成视频的时长，单位为秒（1-20）。省略时，模型会根据提示词选择长度，最长 20 秒。当设置了 `audio` 时忽略。

  范围：`1` 到 `20`
</ParamField>

<ParamField body="input.fps" type="integer" default="24">
  帧率：24 或 48。
</ParamField>

<ParamField body="input.image" type="string">
  用于图生视频的输入图像 URI（jpg、jpeg、png 或 webp）。
</ParamField>

<ParamField body="input.last_frame_image" type="string">
  最后一帧的参考图像 URI。
</ParamField>

<ParamField body="input.prompt" type="string" required>
  用于视频生成的文本提示词。
</ParamField>

<ParamField body="input.prompt_upsampling" type="boolean" default="true">
  在生成之前重写提示词。当需要通过 `seed` 复现结果时，请将其禁用。
</ParamField>

<ParamField body="input.resolution" type="string" default="&#x22;720p&#x22;">
  输出分辨率：720p 或 1080p。
</ParamField>

<ParamField body="input.save_audio" type="boolean" default="true">
  保存带音频的视频。
</ParamField>

<ParamField body="input.seed" type="integer">
  用于可复现生成的随机种子。省略时随机。
</ParamField>

由 Router 在 `GET /v2/models/pruna/p-video-2/openapi.json` 提供的 schema 生成，这也是请求到达提供商之前 Router 用于校验调用的同一份文档。

### 输出

<ResponseField name="error" type="string">
  报错信息。当状态为 failed 时存在。
</ResponseField>

<ResponseField name="generation_url" type="string">
  已完成视频的 URL。当状态为 succeeded 时存在。
</ResponseField>

<ResponseField name="message" type="string">
  人类可读的进度信息。
</ResponseField>

<ResponseField name="status" type="string">
  预测状态：starting、processing、succeeded、failed 或 canceled。
</ResponseField>

## 示例

### 输入

```json theme={null}
{
  "input": {
    "aspect_ratio": "16:9",
    "draft": false,
    "duration": 2,
    "fps": 24,
    "prompt": "A single red maple leaf resting on a plain white background.",
    "resolution": "720p"
  }
}
```

### 输出

```json theme={null}
{
  "generation_url": "https://example.invalid/pruna/p-video-2/output.mp4",
  "status": "succeeded"
}
```

## 发布前须知

SDK 会生成 `Idempotency-Key` 并在自动重试中复用它。手动重试时，请复用原始 key。Router 最长可保持连接 10 分钟。

请求失败时，Router 会发送 `X-Comfy-Error-Type` 响应头说明原因。`422` 表示 Router 在调用提供商之前就拒绝了输入。生成的资源请及时下载，因为[结果链接会过期](/zh/development/comfy-router/reference#结果资产)。

<CardGroup cols={3}>
  <Card title="请求头" icon="list" href="/zh/development/comfy-router/quickstart">
    身份验证、幂等性、请求 ID、错误分类、重试节奏、消费限额。
  </Card>

  <Card title="使用 Router API" icon="code" href="/zh/development/comfy-router/quickstart">
    模型发现、校验错误、重试与计费。
  </Card>

  <Card title="限制" icon="triangle-exclamation" href="/zh/development/comfy-router/limitations">
    Router 目前不支持的功能，以及替代方案。
  </Card>
</CardGroup>