The Enforcement Rules of the Motion Picture Act Article 4

The term “Motion picture advertisement” as referred to in the Act indicates trailers promoting a motion picture and other images that transmit a motion picture’s content.
中文原文 電影法施行細則第4條
本法所稱電影片之廣告片,指宣傳電影片之預告樣片及其他結合電影片內容之影像。

English translation for reference only; the Chinese text prevails. Not legal advice.