{
  "name": "speaker-layout-stream",
  "sources": [
    {
      "name": "room_src",
      "type": "livekit",
      "config": {
        "serverUrl": "wss://your-project.livekit.cloud",
        "token": "eyJ..."
      }
    }
  ],
  "nodes": [
    {
      "name": "mix_video",
      "type": "video_mixer",
      "inputs": ["room_src"],
      "config": {
        "canvas": { "width": 1920, "height": 1080, "bgColor": "#0d1117" },
        "layout": {
          "mode": "speaker",
          "common": {
            "gap": 6,
            "borderRadius": 12,
            "nameLabel": { "enabled": true, "position": "bottom-left" },
            "avatar": { "enabled": true }
          },
          "speaker": {
            "mainPriority": ["screen_share", "active_speaker"],
            "mainRatio": 0.75,
            "thumbnailPosition": "bottom",
            "maxThumbnails": 6,
            "mainFit": "auto",
            "thumbnailFit": "cover"
          }
        }
      }
    },
    {
      "name": "mix_audio",
      "type": "audio_mixer",
      "inputs": ["room_src"],
      "config": {}
    }
  ],
  "sinks": [
    {
      "name": "rtmp_out",
      "type": "rtmp_push",
      "inputs": ["mix_video", "mix_audio"],
      "config": { "urls": ["rtmp://live.example.com/app/webinar-key"] }
    }
  ]
}