{
  "requested_second": 104,
  "exact_baseline_frame": {
    "id": "f3120",
    "source_frame_index": 3120,
    "timestamp_seconds": 104.0,
    "source_pts_seconds": 104.0,
    "timestamp": "104.000000",
    "reasons": [
      "baseline_1fps"
    ],
    "image": "https://ai-video-relay-check-20261027.pages.dev/frames/frame-00003120.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-00003120.webp"
  },
  "nearby_frames": [
    {
      "id": "f3090",
      "source_frame_index": 3090,
      "timestamp_seconds": 103.0,
      "source_pts_seconds": 103.0,
      "timestamp": "103.000000",
      "reasons": [
        "baseline_1fps",
        "motion_dense"
      ],
      "image": "https://ai-video-relay-check-20261027.pages.dev/frames/frame-00003090.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-00003090.webp"
    },
    {
      "id": "f3120",
      "source_frame_index": 3120,
      "timestamp_seconds": 104.0,
      "source_pts_seconds": 104.0,
      "timestamp": "104.000000",
      "reasons": [
        "baseline_1fps"
      ],
      "image": "https://ai-video-relay-check-20261027.pages.dev/frames/frame-00003120.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-00003120.webp"
    },
    {
      "id": "f3150",
      "source_frame_index": 3150,
      "timestamp_seconds": 105.0,
      "source_pts_seconds": 105.0,
      "timestamp": "105.000000",
      "reasons": [
        "baseline_1fps",
        "motion_dense"
      ],
      "image": "https://ai-video-relay-check-20261027.pages.dev/frames/frame-00003150.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-00003150.webp"
    }
  ],
  "screen_observation": {
    "time": 104.0,
    "source_frame_index": 3120,
    "raw_ocr": "当兄弟打游戏我把他键盘砸了刚给你买的EV63",
    "raw_caption": "刚给你买的EV63",
    "raw_title": "当兄弟打游戏我把他键盘砸了",
    "screen_caption": "刚给你买的EV63",
    "screen_title": "当兄弟打游戏我把他键盘砸了",
    "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": [
    {
      "start": 102.86,
      "end": 104.08,
      "text": "刚给你买的一位露餐",
      "confidence": {
        "no_speech_prob": 7.329688245238941e-11,
        "avg_logprob": -0.6132927674513596
      }
    }
  ],
  "content_section": {
    "index": 7,
    "start": 94.966667,
    "end": 105.533333,
    "title": "电脑、键盘与人物反应",
    "visual_observation": "第一视角接近电脑桌，手伸向键盘；镜头随后下移，地上出现键帽或碎片。黑衣人蹲下又起身，镜头前再递近一个键盘状物体，人物面部表情明显变化。",
    "camera": "手持俯仰与快速转向，需连续预览确认过程。",
    "uncertainty": "标题“当兄弟打游戏我把他键盘砸了”为覆盖标题；不能只靠标题断言每次撞击方式。",
    "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"
  ]
}