{
    "bandwidthProfile": {
      "video": {
        "dominantSpeakerPriority": "high",
        "mode": "collaboration",
        "renderDimensions": {
          "high": { "height": 720, "width": 1280 },
          "standard": { "height": 90, "width": 160 }
        }
      }
    },
    "dominantSpeaker": true,
    "logLevel": "debug",
    "maxAudioBitrate": 16000,
    "preferredVideoCodecs": [{ "codec": "VP8", "simulcast": true }],
  "video": {
    "height": 720,
    "frameRate": 24,
    "width": 1280
  },
    "audio" : {} 
    }