{
  "seqNum": 820263768,
  "type": "ANSWER",
  "result": "ok",
  "answer": {
    "castMode": "mirroring",
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    "sendIndexes": [1, 3],
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        "maxChannels": 5,
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        "maxBitRate": 320000,
        "maxDelay": 4000
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      "video": {
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        "minDimensions": {"width": 320, "height": 240, "frameRate": "23/3"},
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    },
    "display": {
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      "aspectRatio": "64:27",
      "scaling": "sender"
    },
    "receiverRtcpEventLog": [0, 1],
    "receiverRtcpDscp": [234, 567],
    "receiverGetStatus": true,
    "rtpExtensions": ["adaptive_playout_delay"]
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}