Live and pre-recorded video tutorials are an effective means for teaching physical skills such as cooking or prototyping electronics. A dedicated cameraperson following an instructor's activities can improve production quality. However, instructors who do not have access to a cameraperson's help often have to work within the constraints of static cameras. We present Stargazer, a novel approach for assisting with tutorial content creation with a camera robot that autonomously tracks regions of interest based on instructor actions to capture dynamic shots. Instructors can adjust the camera behaviors of Stargazer with subtle cues, including gestures and speech, allowing them to fluidly integrate camera control commands into instructional activities. Our user study with six instructors, each teaching a distinct skill, showed that participants could create dynamic tutorial videos with a diverse range of subjects, camera framing, and camera angle combinations using Stargazer.

翻译：直播或预录的视频教程是传授烹饪、电子原型制作等动手技能的有效手段。由专属摄像师跟随讲师动作进行拍摄可提升制作质量。然而，无法获得摄像师支持的讲师常需受限于固定摄像机的使用范围。我们提出Stargazer——一种新型教学视频内容创作辅助方案，该方案采用自主追踪讲师动作所指示区域的摄像机机器人，以捕获动态画面。讲师可通过手势与语音等细微指令调整Stargazer的摄像行为，从而将摄像机控制指令自然融入教学活动。我们邀请六位讲师（各教授一项独特技能）开展用户研究，结果表明参与者能够使用Stargazer制作涵盖多种主题、画面构图与机位角度组合的动态教学视频。