{
  "schema_version": 1,
  "checked_at": "2026-10-31",
  "id": "open-cat",
  "title": "路过镜头的小黑猫",
  "subtitle": "CC0 公开示例 · 非热榜",
  "cover": "open-cat.jpg",
  "video": "open-cat.mp4",
  "duration_seconds": 4,
  "width": 960,
  "height": 540,
  "purpose": "Functional local-editor demonstration. Not evidence of current or historical viral popularity.",
  "heat_status": "functional_demo_not_claimed_viral",
  "original_title": "Black Cat walking.webm",
  "author": "Dzkouslavia",
  "author_url": "https://commons.wikimedia.org/wiki/User:Dzkouslavia",
  "source_type": "Own work, explicitly released by uploader on Wikimedia Commons",
  "source_creation_date": "2026-01-28",
  "source_page_url": "https://commons.wikimedia.org/wiki/File:Black_Cat_walking.webm",
  "source_page_permanent_url": "https://commons.wikimedia.org/w/index.php?title=File:Black_Cat_walking.webm&oldid=1278831775",
  "original_download_url": "https://upload.wikimedia.org/wikipedia/commons/e/e0/Black_Cat_walking.webm",
  "original_file_size_bytes": 127644113,
  "original_sha256": "9f83c28163e899214df26c0a8f2d962dc5002153c6242aad8eb2236cd86ef491",
  "license": "CC0-1.0",
  "license_url": "https://creativecommons.org/publicdomain/zero/1.0/",
  "license_check": "Read the primary file-specific Licensing block: copyright holder explicitly dedicates this file under CC0 1.0. This is not the generic Commons page-footer license.",
  "public_reuse_basis": "CC0 dedication on primary source page allows copying, modification, distribution and commercial use without requesting permission.",
  "attribution": "Black Cat walking — Dzkouslavia / Wikimedia Commons, CC0 1.0. Excerpt 1.0–5.0 s, resized, muted and transcoded by isekai-live.",
  "transform": {
    "source_start_seconds": 1.0,
    "source_end_seconds": 5.0,
    "source_duration_seconds": 18.875,
    "output_duration_seconds": 4.0,
    "resize": "1920×1080 to 960×540; original aspect ratio retained",
    "video_codec": "H.264",
    "pixel_format": "yuv420p",
    "fps": 30,
    "audio": "removed",
    "metadata": "original metadata removed",
    "cover": "Extracted from frame zero of the exported MP4; matching size and composition"
  },
  "visual_review": "The downloaded original was inspected at several timestamps. It shows a real black cat walking toward the camera outdoors; the 1.0–5.0 second excerpt retains this action. No substitute or AI-generated cat was used.",
  "files": {
    "open-cat.mp4": "de6148fb6688223f75e3b94dd68018156cd9d61cbc578808b0d0d7e699291f5d",
    "open-cat.jpg": "83dbc7e56f46bcfacf9cb22cbd3134eb168b87eb1bcaeff7188489a67a23ed9d"
  }
}