Prebuffering failed 
**Describe the bug**
I have 2 cameras: RLC-511-5MP (both the same). The configuration is also both the same. 
Only the frontcamera don't work the prebuffering.
Following tests are done: 
- Reconfig the frontcamere
- deleting the Plugin and reinstall + reconfig of both cameras
- Adding the option "force prebuffering"
-> Nothing work. All the time online the frontcame "Einfahrt 2" don't work with the prebuffering.
Hope you can help me :-). 

Following the setup: 
Hombridge running on Proxmox
Proxmox Version: pve-manager/7.2-3/c743d6c1
Homebridge on LXC: 
Ubuntu Focal Fossa (20.04.5 LTS)
Nodejs V16.18.0
Homebridge 1.5.1
Camera UI v5.0.27
Cameras are both: RLC-511-5MP

**Logs**
[11/9/2022, 10:08:37 AM] [CameraUI] Garten 2: Starting video stream: native
[11/9/2022, 10:08:44 AM] [CameraUI] Garten 2: Stopped video stream.
[11/9/2022, 10:08:45 AM] [CameraUI]  WARNING  Einfahrt 2: Can not access prebuffer stream, skipping: Error: Prebuffer process not started!
[11/9/2022, 10:08:45 AM] [CameraUI] Einfahrt 2: Starting video stream: native
[11/9/2022, 10:08:53 AM] [CameraUI] camera.ui v5.0.27 is listening on port 8081 (http)
[11/9/2022, 10:08:53 AM] [CameraUI] Einfahrt 2: Restart prebuffer session..
[11/9/2022, 10:09:21 AM] [CameraUI] Einfahrt 2: Stopped video stream.
[11/9/2022, 10:09:24 AM] [CameraUI]  WARNING  Einfahrt 2: Can not access prebuffer stream, skipping: Error: Prebuffer process not started!
[11/9/2022, 10:09:24 AM] [CameraUI] Einfahrt 2: Starting video stream: native
[11/9/2022, 10:09:33 AM] [CameraUI] Einfahrt 2: Restart prebuffer session..
[11/9/2022, 10:09:37 AM] [CameraUI] Einfahrt 2: Stopped video stream.
[11/9/2022, 10:09:38 AM] [CameraUI] Garten 2: Starting video stream: native
[11/9/2022, 10:09:41 AM] [CameraUI] Garten 2: Stopped video stream.
[11/9/2022, 10:10:13 AM] [CameraUI] Einfahrt 2: Restart prebuffer session..
[11/9/2022, 10:10:53 AM] [CameraUI] Einfahrt 2: Restart prebuffer session..
[11/9/2022, 10:11:33 AM] [CameraUI] Einfahrt 2: Restart prebuffer session..
[11/9/2022, 10:12:14 AM] [CameraUI] Einfahrt 2: Restart prebuffer session..
[11/9/2022, 10:12:54 AM] [CameraUI] Einfahrt 2: Restart prebuffer session..

[11/9/2022, 2:24:24 PM] [CameraUI] Einfahrt 2: Starting video stream: native
[11/9/2022, 2:24:32 PM] [CameraUI] Einfahrt 2: Stopped video stream.
[11/9/2022, 2:24:33 PM] [homebridge-camera-ui] This plugin slows down Homebridge. The write handler for the characteristic 'Selected RTP Stream Configuration' on the accessory 'Einfahrt 2 0A7A' didn't respond at all!. Please check that you properly call the callback! See https://homebridge.io/w/JtMGR for more info.


**Configuration**
{
    "name": "CameraUI",
    "port": 8081,
    "atHomeSwitch": false,
    "logLevel": "info",
    "mqtt": {
        "active": false,
        "tls": false,
        "port": 1883
    },
    "http": {
        "active": false,
        "port": 7272,
        "localhttp": false
    },
    "smtp": {
        "active": false,
        "port": 2727,
        "space_replace": "+"
    },
    "ftp": {
        "active": false,
        "useFile": false,
        "port": 5050
    },
    "ssl": {
        "active": false
    },
    "options": {
        "videoProcessor": "/var/lib/homebridge/node_modules/homebridge-camera-ui/node_modules/ffmpeg-for-homebridge/ffmpeg"
    },
    "cameras": [
        {
            "name": "Garten 2",
            "motion": false,
            "motionTimeout": 15,
            "unbridge": true,
            "hsv": false,
            "prebuffering": true,
            "prebufferLength": 4,
            "videoConfig": {
                "source": "-i rtsp://aReoGa...../h264Preview_01_main",
                "subSource": "-i rtsp://aReoGa...../h264Preview_01_main",
                "stillImageSource": "-i rtsp://aReoGar.../h264Preview_01_main",
                "vcodec": "copy",
                "acodec": "libfdk_aac",
                "audio": true
            },
            "smtp": {
                "email": "Garten 2"
            },
            "videoanalysis": {
                "active": false
            },
            "mqtt": {}
        },
        {
            "name": "Einfahrt 2",
            "motion": false,
            "doorbell": true,
            "switches": true,
            "motionTimeout": 15,
            "unbridge": true,
            "hsv": true,
            "prebuffering": false,
            "forcePrebuffering": false,
            "prebufferLength": 4,
            "videoConfig": {
              "source": "-i rtsp://aReoEi...../h264Preview_01_main",
                "subSource": "-i rtsp://aReoEi...../h264Preview_01_main",
                "stillImageSource": "-i rtsp://aReoEi.../h264Preview_01_main",
                "vcodec": "copy",
                "acodec": "libfdk_aac",
                "audio": true
            },
            "smtp": {
                "email": "Einfahrt 2"
            },
            "videoanalysis": {
                "active": false
            },
            "mqtt": {}
        }
    ],
    "platform": "CameraUI"