FFMpeg log level is incorrect, causing crash
**Describe the bug**
When viewing a camera live stream from Apple Home (that works in the camera.ui app), a call is made to ffmpeg with a logLevel of `level` when not in debug mode and `level+verbose` when in debug mode. This is an invalid log level as shown in the log below.

I installed ffmpeg on Ubuntu 18.04 from apt.

```
ffmpeg -version
ffmpeg version 3.4.8-0ubuntu0.2 Copyright (c) 2000-2020 the FFmpeg developers
built with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04)
```

**Logs**
[2/12/2022, 10:43:50 PM] [CameraUI] Front Porch: Pinging 192.168.1.182:554
[2/12/2022, 10:43:50 PM] [CameraUI] Front Porch: Pinging 192.168.1.182:554 - successful
[2/12/2022, 10:43:50 PM] [CameraUI] Front Porch: Setting prebuffer stream as input
[2/12/2022, 10:43:50 PM] [CameraUI] Front Porch: Starting video stream: native
[2/12/2022, 10:43:50 PM] [CameraUI] Front Porch: Stream command: ffmpeg -hide_banner -loglevel level+verbose -analyzeduration 0 -probesize 1800476 -f mpegts -i tcp://127.0.0.1:16684 -f lavfi -i anullsrc=cl=1 -shortest -an -sn -dn -vcodec copy -pix_fmt yuv420p -color_range mpeg -f rawvideo -payload_type 99 -ssrc 4496907 -f rtp -srtp_out_suite AES_CM_128_HMAC_SHA1_80 -srtp_out_params duai3iuhadiufs78a0sdfhasdkfsdufank3un srtp://192.168.1.213:65360?rtcpport=65360&pkt_size=1318 -progress pipe:1
[2/12/2022, 10:43:50 PM] [CameraUI] Front Porch: Invalid loglevel "level+verbose". Possible levels are numbers or:
[2/12/2022, 10:43:50 PM] [CameraUI] Front Porch: "quiet"
[2/12/2022, 10:43:50 PM] [CameraUI] Front Porch: "panic"
[2/12/2022, 10:43:50 PM] [CameraUI] Front Porch: "fatal"
[2/12/2022, 10:43:50 PM] [CameraUI] Front Porch: "error"
[2/12/2022, 10:43:50 PM] [CameraUI] Front Porch: "warning"
[2/12/2022, 10:43:50 PM] [CameraUI] Front Porch: "info"
[2/12/2022, 10:43:50 PM] [CameraUI] Front Porch: "verbose"
[2/12/2022, 10:43:50 PM] [CameraUI] Front Porch: "debug"
[2/12/2022, 10:43:50 PM] [CameraUI] Front Porch: "trace"
[2/12/2022, 10:43:50 PM] [CameraUI] Front Porch: FFmpeg exited with code: 1 and signal: null
[2/12/2022, 10:43:50 PM] [CameraUI] Front Porch: Stopped video stream.

**Environment**
- Node.js Version:v16.14.0
- Homebridge Version: latest
- Camera UI Version: 5.0.16-latest
- Operating System: Ubuntu 18.04
- Browser: Chrome
