[Bug]: 
### What happened?

Doorbell FFmpeg process creation failed    beta 5

sudo npm i ffmpeg-for-homebridge -g
did not help


### Device Type

Doorbell (Supported)

### Plugin Version

beta (Best Effort)

### HomeBridge Version

v1.4.x (Supported)

### NodeJS Version

v16 (Supported)

### Operating System

Mac OS X 11+ (Supported)

### Relevant log output

```shell
[5/8/2022, 3:42:48 PM] [EufySecurity-2.0.0-beta.5] DEBUG: discoveringDevices
[5/8/2022, 3:42:49 PM] [EufySecurity-2.0.0-beta.5] DEBUG: EufyClient connected true
[5/8/2022, 3:42:49 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Refresh data from cloud and schedule next refresh.
[5/8/2022, 3:42:50 PM] [EufySecurity-2.0.0-beta.5] DEBUG: CameraMaxLivestreamDuration: 30
[5/8/2022, 3:42:50 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Found 1 stations.
[5/8/2022, 3:42:50 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Found Station T8200N002109043E Doorbell DOORBELL 10.0.0.17
[5/8/2022, 3:42:50 PM] [EufySecurity-2.0.0-beta.5] INFO:  You're using guest admin account with this plugin! This is recommanded way!
[5/8/2022, 3:42:50 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Found 1 devices.
[5/8/2022, 3:42:50 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Found device T8200N002109043E Doorbell DOORBELL
[5/8/2022, 3:42:50 PM] [EufySecurity-2.0.0-beta.5] DEBUG: This device is not a station. Generating a new UUID to avoid any duplicate issue
[5/8/2022, 3:42:50 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Doorbell UUID: a16cf291-1e14-475b-98cc-1e6960fd77b2
[5/8/2022, 3:42:50 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Doorbell UUID: a2aab2fd-c24c-4db6-97df-becc39762350
[5/8/2022, 3:42:50 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Doorbell has no battery
[5/8/2022, 3:42:50 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Doorbell Constructed Camera
[5/8/2022, 3:42:50 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Doorbell config is: {
  name: 'Doorbell',
  enableButton: true,
  motionButton: true,
  rtsp: false,
  forcerefreshsnap: false,
  videoConfig: {}
}
[5/8/2022, 3:42:50 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Doorbell has a camera
[5/8/2022, 3:42:50 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Doorbell enableButton config: true
[5/8/2022, 3:42:50 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Doorbell Looks like not compatible with isEnabled or this has been disabled within configuration
[5/8/2022, 3:42:50 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Doorbell motionButton config: true
[5/8/2022, 3:42:50 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Doorbell Looks like not compatible with isMotionDetectionEnabled or this has been disabled within configuration
[5/8/2022, 3:42:50 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Doorbell Looks like not compatible with DeviceLight
[5/8/2022, 3:42:50 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Doorbell Constructed Doorbell
[5/8/2022, 3:42:50 PM] [EufySecurity-2.0.0-beta.5] INFO:  Updating accessory: Doorbell
[5/8/2022, 3:42:51 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Push Connected!
[5/8/2022, 3:43:04 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Doorbell GET EventSnapshotsActive: 0
[5/8/2022, 3:43:04 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Doorbell GET HomeKitCameraActive: 0
[5/8/2022, 3:43:04 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Doorbell GET DeviceEnabled: true
[5/8/2022, 3:43:04 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Doorbell GET DeviceStatusLed: true
[5/8/2022, 3:43:04 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Doorbell GET DeviceMotionDetected: false
[5/8/2022, 3:43:26 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Doorbell GET DeviceMotionDetected: false
[5/8/2022, 3:43:26 PM] [EufySecurity-2.0.0-beta.5] DEBUG: handleSnapshotRequest
[5/8/2022, 3:43:26 PM] [EufySecurity-2.0.0-beta.5] DEBUG: snapshotPromise: false
[5/8/2022, 3:43:26 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Snapshot requested: 640 x 360 Doorbell undefined
[5/8/2022, 3:43:26 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Doorbell RTSP rtspStream:false
[5/8/2022, 3:43:26 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Doorbell Looks like not compatible with RTSP
[5/8/2022, 3:43:26 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Doorbell EUFY CLOUD URL: https://cdn-us.eufylife.com/thumb/2022/05/08/station/T8200N002109043E/WgtkElOgYjH0RC1g./video_20220508_150527.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAJYLV2KOLW6PU4FSA%2F20220508%2Fus-west-2%2Fs3%2Faws4_request&X-Amz-Date=20220508T224250Z&X-Amz-Expires=86400&X-Amz-SignedHeaders=host&X-Amz-Signature=eaf216f9cddb99a34b8cc6c57bad23e413eb6e9e6b233643150128c93ec7de77
[5/8/2022, 3:43:26 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Doorbell Snapshot command: ffmpeg -i https://cdn-us.eufylife.com/thumb/2022/05/08/station/T8200N002109043E/WgtkElOgYjH0RC1g./video_20220508_150527.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAJYLV2KOLW6PU4FSA%2F20220508%2Fus-west-2%2Fs3%2Faws4_request&X-Amz-Date=20220508T224250Z&X-Amz-Expires=86400&X-Amz-SignedHeaders=host&X-Amz-Signature=eaf216f9cddb99a34b8cc6c57bad23e413eb6e9e6b233643150128c93ec7de77 -frames:v 1 -f image2 - -hide_banner -loglevel error undefined
[5/8/2022, 3:43:26 PM] [EufySecurity-2.0.0-beta.5] ERROR: Doorbell FFmpeg process creation failed: spawn ffmpeg ENOENT
[Doorbell] Snapshot request handler provided empty image buffer!
[5/8/2022, 3:43:26 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Fetching snapshot took 0.009 seconds. Doorbell undefined
[5/8/2022, 3:43:26 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Doorbell SET HomeKitCameraActive: 1
[5/8/2022, 3:43:26 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Doorbell SET EventSnapshotsActive: 1
[5/8/2022, 3:43:26 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Doorbell SET HomeKitCameraOperatingModeIndicator: true
[5/8/2022, 3:43:29 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Setting snapshotPromise to undefined.
[5/8/2022, 3:43:42 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Doorbell RTSP rtspStream:false
[5/8/2022, 3:43:42 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Doorbell Looks like not compatible with RTSP
[5/8/2022, 3:43:43 PM] [EufySecurity-2.0.0-beta.5] DEBUG: current_path /Users/terning/.homebridge/eufysecurity/2.sock
[5/8/2022, 3:43:43 PM] [EufySecurity-2.0.0-beta.5] DEBUG: parent_dir /usr/local/lib/node_modules/homebridge-eufy-security/dist/accessories
[5/8/2022, 3:43:43 PM] [EufySecurity-2.0.0-beta.5] DEBUG: current_path /Users/terning/.homebridge/eufysecurity/4.sock
[5/8/2022, 3:43:43 PM] [EufySecurity-2.0.0-beta.5] DEBUG: parent_dir /usr/local/lib/node_modules/homebridge-eufy-security/dist/accessories
[5/8/2022, 3:43:43 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Doorbell VIDEOCONFIG: {"stillImageSource":"-i https://cdn-us.eufylife.com/thumb/2022/05/08/station/T8200N002109043E/WgtkElOgYjH0RC1g./video_20220508_150527.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAJYLV2KOLW6PU4FSA%2F20220508%2Fus-west-2%2Fs3%2Faws4_request&X-Amz-Date=20220508T224250Z&X-Amz-Expires=86400&X-Amz-SignedHeaders=host&X-Amz-Signature=eaf216f9cddb99a34b8cc6c57bad23e413eb6e9e6b233643150128c93ec7de77","maxWidth":640,"maxHeight":480,"maxFPS":10,"maxStreams":2,"maxBitrate":99,"vcodec":"libx264","packetSize":188,"source":"-i unix:/Users/terning/.homebridge/eufysecurity/2.sock","acodec":"libfdk_aac","encoderOptions":"-preset ultrafast -tune zerolatency","forceMax":false}
[5/8/2022, 3:43:43 PM] [EufySecurity-2.0.0-beta.5] INFO:  Doorbell Starting video stream: 640x480, 30 fps, 299 kbps 
[5/8/2022, 3:43:43 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Doorbell Stream command: ffmpeg -hide_banner -loglevel level -use_wallclock_as_timestamps 1 -i unix:/Users/terning/.homebridge/eufysecurity/2.sock -an -sn -dn -r 30 -vcodec libx264 -pix_fmt yuv420p -color_range mpeg -f rawvideo -preset ultrafast -tune zerolatency -filter:v scale='min(640,iw)':'min(480,ih)':force_original_aspect_ratio=decrease,scale='trunc(iw/2)*2:trunc(ih/2)*2' -b:v 299k -bufsize 598k -maxrate 299k -payload_type 99 -ssrc 9650611 -f rtp -srtp_out_suite AES_CM_128_HMAC_SHA1_80 -srtp_out_params V7u2SZ2R9/VGY9e+CAlNUO4sC8JJfB8m6VcaG0yk srtp://10.0.0.13:62309?rtcpport=62309&pkt_size=188 -i unix:/Users/terning/.homebridge/eufysecurity/4.sock -vn -sn -dn -codec:a libfdk_aac -profile:a aac_eld -flags +global_header -ar 16k -b:a 24k -ac 1 -payload_type 110 -ssrc 9517417 -f rtp -srtp_out_suite AES_CM_128_HMAC_SHA1_80 -srtp_out_params MNjwbo+Xn5RUe5SUKE4zycZNKR96De6MJlmDWJML srtp://10.0.0.13:59751?rtcpport=59751&pkt_size=188 -progress pipe:1
[5/8/2022, 3:43:43 PM] [EufySecurity-2.0.0-beta.5] ERROR: Doorbell FFmpeg process creation failed: spawn ffmpeg ENOENT
[5/8/2022, 3:43:43 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Stopping session with id: cce21999-d156-4b6d-8cec-ea3fc5cd01c8
[5/8/2022, 3:43:43 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Doorbell_video Closed NamePipeStream
[5/8/2022, 3:43:43 PM] [EufySecurity-2.0.0-beta.5] DEBUG: Doorbell_audio Closed NamePipeStream
[5/8/2022, 3:43:43 PM] [EufySecurity-2.0.0-beta.5] INFO:  Doorbell Stopped video stream.
```
