eufy indoor camera audio and motion sensor
**Describe The Problem:**
Unable to get Audio working and Motion sensor does not detect anything.

I have tried to find in Wiki but could not find anything. Is there anything else i have to do to get audio working beside adding the audio and audio codec in config.

Also, i can see the motions sensors in homebridge and homekit but it does not detect anything. any reason why?

thank you.


Homebridge logs

```
[10/12/2020, 3:33:54 PM] [Camera FFmpeg] [Corner Camera] Starting video stream: 1280 x 720, 30 fps, 299 kbps
[10/12/2020, 3:33:55 PM] [Camera FFmpeg] [Corner Camera] FFmpeg exited with code: 1 and signal: null (Error)
[10/12/2020, 3:33:55 PM] [Camera FFmpeg] [Corner Camera] Stopped video stream.
[10/12/2020, 3:34:12 PM] [Camera FFmpeg] [Corner Camera] Starting video stream: 1280 x 720, 30 fps, 299 kbps
[10/12/2020, 3:34:13 PM] [Camera FFmpeg] [Corner Camera] FFmpeg exited with code: 1 and signal: null (Error)
[10/12/2020, 3:34:13 PM] [Camera FFmpeg] [Corner Camera] Stopped video stream.
```
**Homebridge Config:**

```
                {
                    "name": "Corner Camera",
                    "manufacturer": "Eufy",
                    "model": "Indoor Cam",
                    "serialNumber": "",
                    "firmwareRevision": "2.0.8.9",
                    "motion": true,
                    "videoConfig": {
                        "source": "",
                        "maxStreams": 2,
                        "audio": true,
                        "acodec": "libopus",
                        "maxWidth": 1920,
                        "maxHeight": 1080,
                        "videoFilter": "scale=1280:720"
                    }
                }
```


**Environment:**

* **Node.js Version**:  v12.16.1
* **NPM Version**: 3.0.3
* **Homebridge Version**: 1.2.2
* **Homebridge Camera FFmpeg Version**: ffmpeg-20200403-52523b6-win32-static
* **Homebridge Config UI X Plugin Version**: 4.27.1
* **Operating System**:  Windows


