# 在 ClassIn 中使用开映虚拟摄像头

1. 打开 ClassIn；
2. 在 ClassIn 中的 【摄像头】 选项中选择 CamIn Virtual Camera。

<figure><img src="/files/mEMn1vH7vDnnBfdM9jfU" alt=""><figcaption></figcaption></figure>

3. 打开 CamIn 即可开始使用。

#### FAQ

1. [CamIn 在 ClassIn 中黑屏怎么办？](/faq/camin-zai-classin-zhong-hei-ping.md)


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://help.camin.cn/features/camin-virtual-camera/how-to-use-camin-virtual-camera-in-classin.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.