Video podcast teasers are short videos that can be shared on social media platforms to capture interest in the full episodes of a video podcast. These teasers enable long-form podcasters to reach new audiences and gain new followers. However, creating a compelling teaser from an hour-long episode is challenging. Selecting interesting clips requires significant mental effort; editing the chosen clips into a cohesive, well-produced teaser is time-consuming. To support the creation of video podcast teasers, we first investigate what makes a good teaser. We combine insights from both audience comments and creator interviews to determine a set of essential ingredients. We also identify a common workflow shared by creators during the process. Based on these findings, we introduce a human-AI co-creative tool called PodReels to assist video podcasters in creating teasers. Our user study shows that PodReels significantly reduces creators' mental demand and improves their efficiency in producing video podcast teasers.

翻译：视频播客预告片是可在社交媒体平台分享的短视频，旨在吸引观众观看播客完整剧集。这类预告片能帮助长篇播客主触达新受众并获取新粉丝。然而，从长达一小时的剧集中创作出引人入胜的预告片颇具挑战。筛选精彩片段需要大量脑力劳动，将所选片段剪辑成节奏连贯、制作精良的预告片更是耗时费力。为支持视频播客预告片创作，我们首先探究了优质预告片的构成要素——通过整合观众评论与创作者访谈中的洞见，提炼出必备元素集，并识别出创作者在此过程中的通用工作流。基于这些发现，我们提出名为PodReels的人机协同创作工具，旨在协助视频播客主制作预告片。用户研究表明，PodReels显著降低了创作者的心智负荷，并提升了其视频播客预告片的制作效率。