> ## Documentation Index
> Fetch the complete documentation index at: https://docs.happycapy.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# 生成短影片廣告

> 用 Happycapy 從產品 brief 生成直式 MP4 廣告、封面圖和短腳本。

export function ConversationPreview({url, label, linkLabel = "Open full conversation", fit = "content"}) {
  const isContentFit = fit === "content";
  return <div className={`hc-conversation-preview${isContentFit ? " hc-preview-content" : ""}`} style={{
    width: isContentFit ? "100%" : "clamp(320px, calc(100vw - 640px), 960px)",
    margin: isContentFit ? "18px 0 32px" : "18px 0 32px 50%",
    transform: isContentFit ? "none" : "translateX(-50%)",
    border: "1px solid rgba(46, 41, 41, 0.1)",
    borderRadius: "10px",
    overflow: "hidden",
    background: "rgba(255, 255, 255, 0.55)",
    boxShadow: "0 18px 45px rgba(46, 41, 41, 0.08)"
  }}>
      <style>{`
        .hc-conversation-preview-clip {
          position: relative;
          container-type: inline-size;
          aspect-ratio: 16 / 10;
          height: auto;
          overflow: hidden;
          background: white;
        }

        .hc-conversation-preview-frame {
          position: absolute;
          left: 0;
          top: 0;
          width: 1280px !important;
          height: 800px !important;
          max-width: none !important;
          border: 0;
          background: white;
          display: block;
          transform: scale(calc(100cqw / 1280px));
          transform-origin: top left;
        }

        @media (max-width: 1279px) {
          .hc-conversation-preview:not(.hc-preview-content) {
            width: 100% !important;
            margin-left: 0 !important;
            transform: none !important;
          }

          .hc-conversation-preview:not(.hc-preview-content) .hc-conversation-preview-clip {
            height: min(70vh, 560px);
          }

          .hc-conversation-preview:not(.hc-preview-content) .hc-conversation-preview-frame {
            width: 100%;
            height: 100%;
            transform: none;
          }
        }
      `}</style>
      <div style={{
    display: "flex",
    alignItems: "center",
    gap: "8px",
    padding: "10px 12px",
    borderBottom: "1px solid rgba(46, 41, 41, 0.08)",
    background: "rgba(46, 41, 41, 0.035)"
  }}>
        <span style={{
    width: "8px",
    height: "8px",
    borderRadius: "999px",
    background: "#F8A963"
  }} />
        <span style={{
    width: "8px",
    height: "8px",
    borderRadius: "999px",
    background: "rgba(46, 41, 41, 0.18)"
  }} />
        <span style={{
    width: "8px",
    height: "8px",
    borderRadius: "999px",
    background: "rgba(46, 41, 41, 0.18)"
  }} />
        <span style={{
    marginLeft: "8px",
    color: "rgba(46, 41, 41, 0.58)",
    fontSize: "0.82rem",
    overflow: "hidden",
    textOverflow: "ellipsis",
    whiteSpace: "nowrap"
  }}>{label}</span>
      </div>
      <div className="hc-conversation-preview-clip">
        <iframe className="hc-conversation-preview-frame" src={url} title={label} loading="lazy" style={{
    margin: 0,
    maxWidth: "none"
  }} />
      </div>
      <div style={{
    padding: "12px 14px",
    borderTop: "1px solid rgba(46, 41, 41, 0.08)",
    background: "rgba(255, 255, 255, 0.72)"
  }}>
        <a href={url} target="_blank" rel="noreferrer">{linkLabel}</a>
      </div>
    </div>;
}

export function LivePreview({url, label, linkLabel = "Open live result", fit = "content"}) {
  const isContentFit = fit === "content";
  return <div className={`hc-live-preview${isContentFit ? " hc-preview-content" : ""}`} style={{
    width: isContentFit ? "100%" : "clamp(320px, calc(100vw - 640px), 960px)",
    margin: isContentFit ? "18px 0 32px" : "18px 0 32px 50%",
    transform: isContentFit ? "none" : "translateX(-50%)",
    border: "1px solid rgba(46, 41, 41, 0.1)",
    borderRadius: "10px",
    overflow: "hidden",
    background: "rgba(255, 255, 255, 0.55)",
    boxShadow: "0 18px 45px rgba(46, 41, 41, 0.08)"
  }}>
      <style>{`
        .hc-live-preview-clip {
          position: relative;
          container-type: inline-size;
          aspect-ratio: 16 / 10;
          height: auto;
          overflow: hidden;
          background: white;
        }

        .hc-live-preview-frame {
          position: absolute;
          left: 0;
          top: 0;
          width: 1280px !important;
          height: 800px !important;
          max-width: none !important;
          border: 0;
          background: white;
          display: block;
          transform: scale(calc(100cqw / 1280px));
          transform-origin: top left;
        }

        @media (max-width: 1279px) {
          .hc-live-preview:not(.hc-preview-content) {
            width: 100% !important;
            margin-left: 0 !important;
            transform: none !important;
          }

          .hc-live-preview:not(.hc-preview-content) .hc-live-preview-clip {
            height: min(70vh, 520px);
          }

          .hc-live-preview:not(.hc-preview-content) .hc-live-preview-frame {
            width: 100%;
            height: 100%;
            transform: none;
          }
        }
      `}</style>
      <div style={{
    display: "flex",
    alignItems: "center",
    gap: "8px",
    padding: "10px 12px",
    borderBottom: "1px solid rgba(46, 41, 41, 0.08)",
    background: "rgba(46, 41, 41, 0.035)"
  }}>
        <span style={{
    width: "8px",
    height: "8px",
    borderRadius: "999px",
    background: "#F8A963"
  }} />
        <span style={{
    width: "8px",
    height: "8px",
    borderRadius: "999px",
    background: "rgba(46, 41, 41, 0.18)"
  }} />
        <span style={{
    width: "8px",
    height: "8px",
    borderRadius: "999px",
    background: "rgba(46, 41, 41, 0.18)"
  }} />
        <span style={{
    marginLeft: "8px",
    color: "rgba(46, 41, 41, 0.58)",
    fontSize: "0.82rem",
    overflow: "hidden",
    textOverflow: "ellipsis",
    whiteSpace: "nowrap"
  }}>{label}</span>
      </div>
      <div className="hc-live-preview-clip">
        <iframe className="hc-live-preview-frame" src={url} title={label} loading="lazy" style={{
    margin: 0,
    maxWidth: "none"
  }} />
      </div>
      <div style={{
    padding: "12px 14px",
    borderTop: "1px solid rgba(46, 41, 41, 0.08)",
    background: "rgba(255, 255, 255, 0.72)"
  }}>
        <a href={url} target="_blank" rel="noreferrer">{linkLabel}</a>
      </div>
    </div>;
}

當你需要的是完整短影片，而不只是腳本或分鏡時，可以使用這個流程。Happycapy 可以規劃創意、選擇影片模型、生成 MP4、建立封面圖，並驗證輸出文件。

## 範例結果

<LivePreview label="happycapy.ai/share/.../pocketgarden-short-video-ad.mp4" url="https://happycapy.ai/share/ecadeba9-8e0c-4a19-94fc-16bd38167312#f=outputs%2Fpocketgarden-short-video-ad.mp4" linkLabel="打開 MP4" />

## 你可以做什麼

* 9:16 直式 MP4 影片廣告
* 生成封面圖或縮圖
* 短腳本和鏡頭清單
* 可複用到其他產品或平台的提示詞

## 需要準備什麼

* 產品或推廣 brief
* 目標平台和影片時長
* 情緒、場景想法和 CTA
* 必要時指定影片模型

## 可以這樣提問

```text theme={null}
為 PocketGarden 建立一個完整短影片廣告。PocketGarden 是一款幫助公寓租客在室內種香草的應用。請使用 Seedance 2.0 生成真實影片，輸出 8-12 秒直式 MP4、封面圖和包含鏡頭清單的短腳本。影片要溫暖、樂觀、適合公寓生活，包含小廚房、香草生長、App 提醒和最終 CTA：「Start your windowsill garden today.」請保存 MP4、PNG 和 Markdown 文件，並驗證每個文件都存在且非空。
```

### 完整對話

<ConversationPreview label="happycapy.ai/share/.../full-conversation" url="https://happycapy.ai/share/ecadeba9-8e0c-4a19-94fc-16bd38167312" linkLabel="開啟完整對話" />

## Happycapy 會做什麼

1. 把 brief 轉成緊湊的影片創意。
2. 確認影片模型和生成設定。
3. 在雲端沙盒生成 MP4。
4. 建立封面圖和配套腳本。
5. 驗證文件大小，並保留完整製作過程。

## 檢查清單

* 第一秒是否傳達了 hook？
* 輸出是否真的是 MP4，而不是預覽頁？
* 畫面比例是否匹配目標平台？
* 封面圖和腳本是否能用於發布？
* 同一 brief 是否能 remix 成其他平台版本？

## 下一步

繼續讓 Happycapy 為 Reels、TikTok、YouTube Shorts 或另一個產品賣點生成不同版本。
