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，旨在激发观众对完整播客剧集的兴趣。这些预告片帮助长视频播客主触达新受众、获得新关注者。然而，从时长一小时的剧集中创作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，而将选中的片段剪辑成连贯、精美的预告片则耗时费力。为支持视频播客预告片的创作，我们首先探究了优质预告片的构成要素。通过结合观众评论与创作者访谈的洞察，我们归纳出一组核心要素，并识别出创作者在该过程中共享的通用工作流。基于这些发现，我们推出了一款名为PodReels的人机协同创作工具，旨在辅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担，并提升了其制作视频播客预告片的效率。