{
  "requested_second": 58,
  "exact_baseline_frame": {
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    "timestamp_seconds": 58.0,
    "source_pts_seconds": 58.0,
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    "reasons": [
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    "image": "https://ai-video-relay-check-20261027.pages.dev/frames/frame-00001740.webp",
    "width": 405,
    "height": 720,
    "selection_reasons": [
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    ],
    "source_width": 720,
    "source_height": 1280,
    "image_url": "https://ai-video-relay-check-20261027.pages.dev/frames/frame-00001740.webp"
  },
  "nearby_frames": [
    {
      "id": "f1710",
      "source_frame_index": 1710,
      "timestamp_seconds": 57.0,
      "source_pts_seconds": 57.0,
      "timestamp": "57.000000",
      "reasons": [
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      "image": "https://ai-video-relay-check-20261027.pages.dev/frames/frame-00001710.webp",
      "width": 405,
      "height": 720,
      "selection_reasons": [
        "baseline_1fps_or_last"
      ],
      "source_width": 720,
      "source_height": 1280,
      "image_url": "https://ai-video-relay-check-20261027.pages.dev/frames/frame-00001710.webp"
    },
    {
      "id": "f1725",
      "source_frame_index": 1725,
      "timestamp_seconds": 57.5,
      "source_pts_seconds": 57.5,
      "timestamp": "57.500000",
      "reasons": [
        "scene_context"
      ],
      "image": "https://ai-video-relay-check-20261027.pages.dev/frames/frame-00001725.webp",
      "width": 405,
      "height": 720,
      "selection_reasons": [
        "interval_last"
      ],
      "source_width": 720,
      "source_height": 1280,
      "image_url": "https://ai-video-relay-check-20261027.pages.dev/frames/frame-00001725.webp"
    },
    {
      "id": "f1726",
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      "source_pts_seconds": 57.53333333333333,
      "timestamp": "57.533333",
      "reasons": [
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      "image": "https://ai-video-relay-check-20261027.pages.dev/frames/frame-00001726.webp",
      "width": 405,
      "height": 720,
      "selection_reasons": [
        "interval_first"
      ],
      "source_width": 720,
      "source_height": 1280,
      "image_url": "https://ai-video-relay-check-20261027.pages.dev/frames/frame-00001726.webp"
    },
    {
      "id": "f1740",
      "source_frame_index": 1740,
      "timestamp_seconds": 58.0,
      "source_pts_seconds": 58.0,
      "timestamp": "58.000000",
      "reasons": [
        "baseline_1fps",
        "motion_dense"
      ],
      "image": "https://ai-video-relay-check-20261027.pages.dev/frames/frame-00001740.webp",
      "width": 405,
      "height": 720,
      "selection_reasons": [
        "baseline_1fps_or_last"
      ],
      "source_width": 720,
      "source_height": 1280,
      "image_url": "https://ai-video-relay-check-20261027.pages.dev/frames/frame-00001740.webp"
    },
    {
      "id": "f1770",
      "source_frame_index": 1770,
      "timestamp_seconds": 59.0,
      "source_pts_seconds": 59.0,
      "timestamp": "59.000000",
      "reasons": [
        "baseline_1fps"
      ],
      "image": "https://ai-video-relay-check-20261027.pages.dev/frames/frame-00001770.webp",
      "width": 405,
      "height": 720,
      "selection_reasons": [
        "baseline_1fps_or_last"
      ],
      "source_width": 720,
      "source_height": 1280,
      "image_url": "https://ai-video-relay-check-20261027.pages.dev/frames/frame-00001770.webp"
    }
  ],
  "screen_observation": {
    "time": 58.0,
    "source_frame_index": 1740,
    "raw_ocr": "",
    "raw_caption": "",
    "raw_title": "",
    "screen_caption": "",
    "screen_title": "",
    "reviewed_changes": [],
    "verification": "automatic OCR; not independently verified",
    "timing": "observed frame time; onset/offset not known to subsecond precision",
    "is_confirmed_speech": false
  },
  "raw_ASR_at_estimated_time": [],
  "content_section": {
    "index": 1,
    "start": 57.533333,
    "end": 68.333333,
    "title": "遮眼口罩与盘中鸡蛋恶搞",
    "visual_observation": "两人坐在桌边，用口罩遮眼并持叉。左侧人物取下或调整口罩，随后手靠近嘴部并再次遮眼；后段右侧人物也移开口罩、转头，盘中鸡蛋不再可见。",
    "camera": "固定机位为主，动作发生在人物手、脸与餐盘附近。",
    "uncertainty": "稀疏画面不充分证明鸡蛋被吞下或藏在哪里，需看连续预览。",
    "provenance": "assistant visual review of source-frame sheets; not an independent human or automatic semantic-model benchmark"
  },
  "unknowns": [
    "ASR not a verified listening transcript",
    "Caption display time can differ from speech time",
    "Assistant observation must be cross-checked by actually opening image"
  ]
}