{
  "id": "C06-N01",
  "title": "多屏同步验收怎样拍：用帧号样片记录偏差与测量限制",
  "schema_version": "1.0",
  "evidence_kind": "合成输入与协议；非现场测试结果",
  "tool_versions": {
    "generator": "Python 3.12.4",
    "ffmpeg": "8.0.1（仅实际媒体生成与解码）"
  },
  "required_delivery": "帧号样片、固定拍摄条件、抽帧记录及误差说明",
  "input": {
    "content_fps": 30,
    "samples": [
      {
        "left": 12,
        "right": 13,
        "readable": true
      },
      {
        "left": null,
        "right": 14,
        "readable": false
      },
      {
        "left": 20,
        "right": 20,
        "readable": true
      }
    ]
  },
  "expected": {
    "readable_deltas": [
      1,
      0
    ],
    "content_frame_ms": 33.333333333333336,
    "hardware_lock_verified": false
  },
  "measurement": null,
  "unmeasured": [
    "实体播放硬件",
    "显示刷新相位",
    "现场拍摄",
    "实际Windows目标机配置"
  ],
  "record_fields": [
    "capture_id",
    "camera_fps",
    "shutter",
    "left_frame",
    "right_frame",
    "readable",
    "mixed_exposure",
    "delta_frames"
  ]
}