{
  "version": 1,
  "format": "lego-music-video",
  "scene": "Complete LegoMusicVideoAdScene; see features/formats/lego-music-video/contract.ts for executable validation.",
  "song": {
    "actualDurationMs": [
      10000,
      30500
    ],
    "sections": 3,
    "maximumSectionMs": 15000,
    "lyrics": "Every complete sung line; chunk.text may include [Hook] or [Verse].",
    "captions": "Section-derived phrase display, not word alignment; directly review timing against the song."
  },
  "story": {
    "recurringHeroObject": "One specific object, present in all three scenes.",
    "shots": "Exactly three numbered shotIndex slots, each with the slot's lyricLine, funMechanism, sceneDescription and motionHint; npm run format:lego -- prompt prints the full schema and scene grammar."
  },
  "media": {
    "song": "relative path or null",
    "reference": "relative path or null",
    "shots": [
      {
        "image": "Full-quality production still, not a storyboard crop",
        "video": "Silent animated shot matching measured section duration"
      }
    ]
  },
  "render": {
    "width": 1080,
    "height": 1920,
    "fps": 30,
    "codec": "h264",
    "audio": "AAC mixed from the supplied/generated song",
    "duration": "Measured song rounded up to the next frame; no added tail",
    "retiming": "Source/target duration ratio must be 0.75–1.35, recorded explicitly; no freeze padding."
  }
}