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，旨在吸引观众对完整视频播客剧集的兴趣。这类预告片能帮助长视频播客创作者拓展受众群体、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，将选定片段剪辑成连贯精致的预告片则耗费时间。为支持视频播客预告片创作，我们首先探究优秀预告片的核心要素。通过整合观众评论与创作者访谈的洞察，我们确定了系列关键要素，并识别出创作者在此过程中共享的典型工作流程。基于这些发现，我们提出名为PodReels的人机协同创作工具，用于辅助视频播客创作者制作预告片。用户研究表明，PodReels能显著降低创作者的心智负担，提升其视频播客预告片制作效率。