DroidCamera IP Camera: ERROR FFmpeg prebuffer process exited with error! (null) - http://<IP>:4343/video: End of file - 
**Describe the bug**

When using [DroidCam as an IP Camera](https://play.google.com/store/apps/details?id=com.dev47apps.droidcam), the following errors appear when trying to consume the (RTSP?) stream. Both on the default http non-encrypted :4747 connection and the SSL configuration on port :4343 fail for homebridge-camera-ui: 

```
[8/4/2022, 10:26:31 PM] [CameraUI]  ERROR  Homebridge Nexus 4 Camera: FFmpeg prebuffer process exited with error! (null) - [tcp @ 0xaa641310] Connection to tcp://192.168.1.120:8080?timeout=100000000 failed: Connection refused - rtsp://192.168.1.120:8080/h264_ulaw.sdp: Connection refused -
[8/4/2022, 10:26:31 PM] [CameraUI] Homebridge Nexus 4 Camera: Restart prebuffer session..
[8/4/2022, 10:26:31 PM] [CameraUI]  ERROR  Nexus 4 Camera: FFmpeg prebuffer process exited with error! (null) - http://192.168.1.121:4343/video: End of file -
[8/4/2022, 10:26:31 PM] [CameraUI] Nexus 4 Camera: Restart prebuffer session..
[8/4/2022, 10:26:34 PM] [CameraUI] camera.ui v5.0.27 is listening on port 8081 (http)
[8/4/2022, 10:26:41 PM] [CameraUI]  ERROR  Homebridge Nexus 4 Camera: FFmpeg prebuffer process exited with error! (null) - [tcp @ 0xa9b41790] Connection to tcp://192.168.1.120:8080?timeout=100000000 failed: Connection refused - rtsp://192.168.1.120:8080/h264_ulaw.sdp: Connection refused -
[8/4/2022, 10:26:41 PM] [CameraUI] Homebridge Nexus 4 Camera: Restart prebuffer session..
[8/4/2022, 10:26:41 PM] [CameraUI]  ERROR  Nexus 4 Camera: FFmpeg prebuffer process exited with error! (null) - http://192.168.1.121:4343/video: End of file -
[8/4/2022, 10:26:41 PM] [CameraUI] Nexus 4 Camera: Restart prebuffer session..
[8/4/2022, 10:26:51 PM] [CameraUI]  ERROR  Homebridge Nexus 4 Camera: FFmpeg prebuffer process exited with error! (null) - [tcp @ 0xb08c1410]  - Connection to tcp://192.168.1.120:8080?timeout=100000000 failed: Connection refused -  - rtsp://192.168.1.120:8080/h264_ulaw.sdp: Connection refused -
[8/4/2022, 10:26:51 PM] [CameraUI] Homebridge Nexus 4 Camera: Restart prebuffer session..
[8/4/2022, 10:26:52 PM] [CameraUI]  ERROR  Nexus 4 Camera: FFmpeg prebuffer process exited with error! (null) - http://192.168.1.121:4343/video: End of file -
[8/4/2022, 10:26:52 PM] [CameraUI] Nexus 4 Camera: Restart prebuffer session..
```

**To Reproduce**

1. Install DroidCam on an old android device.
2. Set it up as IP Camera and optionally configure the HTTPS support.
3. Edit `config.json` accordingly at the homebridge side.
4. Error above.

**Expected behavior**

The stream should be consumed transparently by homebridge-camera-ui.

**Environment**

Same as in issue #622
