{
  "taskId": "expansion-041",
  "slug": "watch-second-hand-single-step",
  "language": "zh",
  "mode": "image-to-video",
  "modelId": "MiniMax-H3",
  "evidenceClass": "original-practice-method-not-model-tested",
  "input": {
    "path": "/learning-assets/pseo-expansion70-20261014/watch-second-hand-single-step/first-frame.png",
    "editableSource": "/learning-assets/pseo-expansion70-20261014/watch-second-hand-single-step/first-frame.svg",
    "role": "first_frame",
    "sourceType": "original-illustration"
  },
  "intent": {
    "cluster": "Historical prompt templates and image-to-video family",
    "historicalQueries": [
      "minimax h3提示词模板",
      "minimax h3 image to video",
      "minimax h3 prompt guide"
    ],
    "evidenceRef": "docs/research/pseo-keyword-gap-2026-10-05/evidence/bing-live-keywords.csv",
    "distinctValue": "A one-tick second-hand exercise with a stationary watch body, dial print and other hands; includes visual tick checkpoints rather than promises of accurate timekeeping.",
    "existingOwnerBoundary": [
      {
        "path": "/blog/product-shape-consistency-video",
        "difference": "This downloadable watch test separates a moving thin hand from the dial markers and case; the broad article has no single-tick input or hand-by-hand inspection sheet."
      },
      {
        "path": "/blog/product-video-shot-list",
        "difference": "The task covers one bounded hand motion, not a collection of product shots."
      }
    ],
    "demandClass": "historical-parent-query; exact long-tail demand unmeasured"
  },
  "title": "表针单步：只跳一次，表盘印刷保持不动",
  "description": "用清楚的表盘首帧练习秒针向相邻刻度跳一步，独立检查时针、分针、印刷刻度和表壳是否稳定。",
  "goal": "描述一次顺时针秒针跳动并停住。原创素材用于视觉连续性练习，不是H3已测结果，也不能证明计时准确。",
  "preparation": [
    "首帧正对表盘，时针、分针和秒针可分辨。练习图使用图形刻度，避免细小文字妨碍观察。",
    "用珊瑚色识别秒针，深色识别另外两根针；不要同时要求整只表切换到新时间。",
    "以相邻小刻度作为起止参照。一步是视觉目标，不是精确角度控制参数。",
    "真实品牌表盘印刷必须准确时，保留干净静帧叠加，或用实拍运动；不能把生成文字稳定性当成可靠保真流程。"
  ],
  "prompt": "从上传的正面手表图开始。表壳、表带、表盘印刷和所有刻度保持静止。深色时针与分针保持起始位置。只有细长的珊瑚色秒针顺时针跳动一小步，从起始刻度转到紧邻的下一条小刻度，整根笔直地绕中央轴针转动。随后停在该刻度，保持到镜头结束。秒针长度、颜色与中央连接保持连贯。机位和灯光固定，不缩放，不连续扫动，不重复跳动，不新增数字。",
  "steps": [
    {
      "title": "辨认三根针",
      "body": "开始前确认珊瑚色秒针与两根深色针能分开看清。多根针严重重合时，更换清楚的起始素材，不让提示词猜哪根应该动。"
    },
    {
      "title": "明确相邻的停止位置",
      "body": "终点写成顺时针下一条小刻度，不要同时加入连续延时、循环时钟等描述，那会指向另一种动作。"
    },
    {
      "title": "先看中心再看针尖",
      "body": "先检查秒针是否始终连接同一个中央轴，再追踪针尖到相邻刻度。弯曲或整体平移不属于转轴跳动。"
    },
    {
      "title": "停住后核对表盘",
      "body": "对比上、右、下三处刻度及两根深色针。印刷或静止表针变化时，保留单步动作，简化表盘来源，或在后期合成固定表面。"
    }
  ],
  "acceptance": [
    "表壳与表带的形状、位置保持稳定。",
    "珊瑚色秒针始终连接中央轴。",
    "秒针只顺时针移向相邻一条小刻度。",
    "秒针保持单根笔直，长度不变。",
    "深色时针、分针保持起始朝向。",
    "表盘刻度没有增生、消失或沿圆周漂移。",
    "终点稳定停住，没有第二次跳动或反向回弹。"
  ],
  "troubleshooting": [
    {
      "symptom": "秒针变成连续扫动",
      "change": "只修改结尾要求，写清一步后停住，去掉扫动、延时和循环措辞。"
    },
    {
      "symptom": "三根针一起移动",
      "change": "只修改职责分配，明确珊瑚色秒针可动，两根深色针固定，保留同样一步幅度。"
    },
    {
      "symptom": "秒针与中心脱开",
      "change": "只减小动作幅度，再检查中央连接，整体平移或弯曲都应判为失败。"
    },
    {
      "symptom": "表盘印刷不断变化",
      "change": "练习时只把来源改成更简单的图形表盘；真实印刷需准确时在后期保留原表面或改用实拍。"
    }
  ],
  "ending": "结尾停在下一条小刻度，留出足够静止画面比较表盘。记录实际观察到的跳动次数，不把视频标成准确时钟仿真。",
  "assetCaption": "原创图形表盘输入，珊瑚色秒针与深色时分针分开；这是插画练习素材，不是生成结果或计时测量。"
}