video input

To optimize the usage process of the client video input feature, consider the following improvement suggestions:

**Step 1: Install Virtual Camera**

1. Open the Larkxr-render/RenderServer/runtime/vcam folder on the server.

2. Run the RegVCam.bat script with administrator privileges to ensure that each rendering node performs this operation.

3. Confirm successful installation by referring to the prompt information.

**Step 2: Obtain Video Input Authorization**

- Apply for an authorization code from the developer platform or contact Parallel Cloud Business to obtain video input authorization.

**Step 3: Configure Video-Supporting Applications**

- Ensure that the required application supports video functionality and enable the "Start Client Video Input" option in the settings.

**Step 4: Prepare the Camera**

- The client needs to prepare a camera; no additional preparation is required if the device has a built-in camera.

**Step 5: Enable Video Functionality**

- Once the https environment is set up or after accessing the application via localhost, the video functionality can be enabled.

By implementing the above optimizations, users can better understand the key operations of each step and use the client video input feature more smoothly.

**Note:**

- When locally debugging, you can use OpenSSL to set up a free https environment. Below are brief steps for configuring https on Nginx and example commands for generating certificates (applicable to Windows and Linux systems).

### OpenSSL Certificate Generation Example Commands:

#### Windows Certificate Generation:

```html
openssl genpkey -algorithm RSA -out mykey.pem -pkeyopt rsa_keygen_bits:2048
openssl req -new -x509 -days 3650 -key mykey.pem -out mycert.pem -subj "/C=US/ST=State/L=City/O=Organization/OU=Department/CN=CommonName"
```

#### Linux Certificate Generation:

```html
openssl genpkey -algorithm RSA -out private_key.pem -pkeyopt rsa_keygen_bits:2048
openssl req -new -x509 -key private_key.pem -out certificate.pem -days 365

```

#### Nginx https Configuration Example:

```html
server {
    listen       {{port}} ssl;
    server_name localhost;
    ssl_certificate      /path/to/cert.pem;  # Certificate file path
    ssl_certificate_key  /path/to/key.pem;   # Private key file path
    ssl_session_cache shared:SSL:1m;
    ssl_session_timeout 5m;
    ssl_protocols SSLv2 SSLv3 TLSv1 TLSv1.2;
    ...
}
```