> For the complete documentation index, see [llms.txt](https://help.livebuy.tv/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.livebuy.tv/product-tour/videos/sales-video/video-trailer.md).
# 預告片
## 置入前導預告片
為您的每一部銷售正片開始之前，置入有助於您推廣個人或品牌形象之前導預告片。
每一場銷售影片都可單獨管理預告片設定，當您有事前設定好 「 通用預告片 」 時，系統將自動預設套用設定，從右側 「 預告片 」 功能區塊點選可編輯內容，上傳或選取一部影片並 「 儲存 」 即可生效。
若您希望某單一場次不啟用預告片時，同樣請清除內容、保持留空再點選 「 儲存 」 按鈕，並於系統提示畫面內再次選擇 「 確認 」 儲存即可完成設定。
銷售影片廣裡 - 預告片設定
### 點播間的預告片
設定成功之後，於前台點播間的銷售正片開始之前，將會優先播放預告片，當顧客點選 「 略過介紹 」 可直接從 「 影片開始時間 」 觀看銷售正片。
預告片播放模式下，您的顧客仍可從購物袋正常使用 「 商品跳轉 」 功能，不僅保留影音銷售之目的，更有助於您的個人或品牌形象之推廣。
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# Agent Instructions
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## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:
```
GET https://help.livebuy.tv/product-tour/videos/sales-video/video-trailer.md?ask=&goal=
```
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