[Bug]: Doorbell FPS setting ignored
### What happened?

I'm running homebridge on a Raspberry PI 3 B+ so I'm tweaking the video settings because the default one doesn't run smoothly. These are my video settings right now:

"videoConfig": {
    "audio": true,
    "maxWidth": 640,
    "maxHeight": 480,
    "maxFPS": 12
}

The video stream starts the the requested resolution, but the FPS are fixed at 30:

7/23/2022, 7:19:52 PM] [EufySecurity-2.1.0-beta.12] INFO:  Timbre Starting video stream: 640x480, 30 fps, 299 kbps  (AAC-eld)


### Device Type

Doorbell (Supported)

### Plugin Version

beta (Best Effort)

### HomeBridge Version

v1.4.x (Supported)

### NodeJS Version

v16 (Supported)

### Operating System

Raspbian 10+ (Supported)

### Relevant log output

```shell
7/23/2022, 7:19:52 PM] [EufySecurity-2.1.0-beta.12] INFO:  Timbre Starting video stream: 640x480, 30 fps, 299 kbps  (AAC-eld)
```
