{
  "source_url": "https://ugchdrmturk.s3.us-east-2.amazonaws.com/videos/3580e78fdfeaf3b619a10b32a4e06579.mp4",
  "source_metadata": {
    "file": "_drafts/hdr-vqa-research/new-media/beyond8bits-neon.mp4",
    "format": "yuv420p10le",
    "size": [
      1920,
      1080
    ],
    "fps": "30",
    "source_sha256": "61006711d7119606b4c6ac4bcf7aeea3a86f297ec5052f3fc407fe5fc685d07f",
    "luminance_quantiles": [
      0.0006927959400421035,
      0.03385887456720966,
      0.22862680220620107,
      19.1054473586213,
      322.622054107429,
      1419.2706548306487
    ],
    "fraction_outside709": 0.22514226466049383,
    "transfer": "PQ",
    "primaries": "BT.2020",
    "matrix": "BT.2020nc",
    "range": "limited"
  },
  "sdr": "1920x1080 30fps 180 frames; H264 CRF16 limited BT.709, 100-nit zero-black BT.1886 reference",
  "conversion": "Ld=100 L/(L+100), then luminance-preserving desaturation into BT.709. Same fixed map on all frames; 2x2 chroma box downsampling.",
  "roi_xywh": [
    0.25,
    0.25,
    0.4,
    0.4
  ],
  "source_sha256": "61006711d7119606b4c6ac4bcf7aeea3a86f297ec5052f3fc407fe5fc685d07f",
  "sdr_sha256": "be528fae399c1a3d8286fabfa6445feb32aceff39df79f6f533ac6549f2f7d6e",
  "interpretation": "Constructed SDR input and native HDR target; no inverse reconstruction or model prediction."
}