Configure homebridge-camera-ffmpeg homebridge plugin for USB-attached webcam

homebridge-camera-ffmpeg snippet config.json

    {
      "platform": "Camera-ffmpeg",
      "videoProcessor": "/usr/local/bin/ffmpeg",
      "cameras": [
        {
          "name": "BasementCam",
          "videoConfig": {
            "source": "-re -f v4l2 -video_size 1280x720 -i /dev/video0",
            "stillImageSource": "-f video4linux2 -input_format mjpeg -video_size 1280x720 -ss 0.9 -i /dev/video0 -frames:v 1",
            "maxStreams": 2,
            "maxWidth": 1280,
            "maxHeight": 720,
            "audio": false,
            "vcodec": "h264_omx",
            "debug": false
          }
        }
      ]
    }