5.0.20 not working
**Describe the bug**
Can't start the Stream / stillimage


**Logs**
```
[18/04/2022, 09:34:15] [CameraUI] Starting interface...
[18/04/2022, 09:34:15] [CameraUI] camera.ui v5.0.20 is listening on port 8583 (http)
[18/04/2022, 09:34:43] [CameraUI] Entry: Start stream requested: 1280x720, 30 fps, 299 kbps
[18/04/2022, 09:34:43] [CameraUI] Entry: Incoming ping request for: rtsp://xxxx:xxxx@192.168.178.191/11 - Timeout: 1s
[18/04/2022, 09:34:43] [CameraUI] Entry: Pinging 192.168.178.191:80
[18/04/2022, 09:34:43] [CameraUI] Entry: Pinging 192.168.178.191:80 - successful
[18/04/2022, 09:34:43] [CameraUI] Entry: Setting prebuffer stream as input
[18/04/2022, 09:34:43] [CameraUI] Entry: Starting video stream: native
[18/04/2022, 09:34:43] [CameraUI] Entry: Stream command: /usr/lib/node_modules/homebridge-camera-ui/node_modules/ffmpeg-for-homebridge/ffmpeg -hide_banner -loglevel verbose -analyzeduration 0 -probesize 500000 -f mpegts -i tcp://127.0.0.1:26168 -an -sn -dn -vcodec copy -pix_fmt yuv420p -color_range mpeg -f rawvideo -payload_type 99 -ssrc 14173248 -f rtp -srtp_out_suite AES_CM_128_HMAC_SHA1_80 -srtp_out_params WM6f4x7HjdPsHxrpEHxx3c6fO6QDpt9Z9rwutHVM srtp://192.168.178.64:61102?rtcpport=61102&pkt_size=1318 -progress pipe:1
[18/04/2022, 09:34:43] [CameraUI] Entry: [tcp @ 0x294afb0] Starting connection attempt to 127.0.0.1 port 26168
[18/04/2022, 09:34:43] [CameraUI] Entry: [tcp @ 0x294afb0] Successfully connected to 127.0.0.1 port 26168
[18/04/2022, 09:35:14] [CameraUI] Entry: Stop stream requested
[18/04/2022, 09:35:14] [CameraUI] Entry: Stopped video stream.
[18/04/2022, 09:35:14] [CameraUI] Entry: Prebuffer request ended
[18/04/2022, 09:35:14] [CameraUI] Entry: FFmpeg exited with code: null and signal: SIGKILL (Expected)
[18/04/2022, 09:35:18] [CameraUI] Garden: Snapshot requested: 640 x 360
[18/04/2022, 09:35:18] [CameraUI] Garden: Snapshot command: /usr/lib/node_modules/homebridge-camera-ui/node_modules/ffmpeg-for-homebridge/ffmpeg -hide_banner -loglevel error -analyzeduration 0 -probesize 500000 -f mpegts -i tcp://127.0.0.1:18911 -frames:v 1 -f image2 -
[18/04/2022, 09:35:18] [CameraUI] Entry: Snapshot requested: 640 x 360
[18/04/2022, 09:35:18] [CameraUI] Entry: Snapshot command: /usr/lib/node_modules/homebridge-camera-ui/node_modules/ffmpeg-for-homebridge/ffmpeg -hide_banner -loglevel error -analyzeduration 0 -probesize 500000 -f mpegts -i tcp://127.0.0.1:21493 -frames:v 1 -f image2 -
[Garden A659] The image snapshot handler for the given accessory is slow to respond! See https://git.io/JtMGR for more info.
[Entry 3737] The image snapshot handler for the given accessory is slow to respond! See https://git.io/JtMGR for more info.
[Entry 3737] The image snapshot handler for the given accessory didn't respond at all! See https://git.io/JtMGR for more info.
[Garden A659] The image snapshot handler for the given accessory didn't respond at all! See https://git.io/JtMGR for more info.
```


**Environment**
- Node.js Version: v14.19.1
- Homebridge Version: v1.4.0
- Camera UI Version: v5.20.0
- Operating System: PI 4
- Browser: Safari
