Interactive web documentaries have the potential to engage people with important topics through innovative storytelling approaches. Understanding how users interact with web documentaries and to what extent they consume their content can help documentary filmmakers reach a broader or more engaged audience. In this article, we provide an in-depth and quantitative analysis of an interactive web documentary called iOtok. The 13 episodes of iOtok were launched on an online portal showcasing a variety of features (chat, souvenirs, animated 360 panoramas, etc.), on a weekly basis. Through the analysis of more than 20 000 sessions, newsletter statistics and one online questionnaire, we discuss the impact of serialization and interactivity on audience reception and user engagement. Data show that in the case of iOtok, serialization had a positive impact (large number of sessions over time, long time on site). However, and somehow unexpectedly, every click led to a considerable amount of users dropping off and quitting the web portal before reaching the core videos. This article also addresses other aspects of web documentaries, such as the efficiency of various media to reach and engage users over time and differences in behaviors between registered and unregistered users.

互动式网络纪录片有可能通过创新的讲故事方法吸引具有重要主题的人们。了解用户与网络纪录片的互动方式以及他们消费内容的程度可以帮助纪录片制片人接触到更多或更广泛的观众。在本文中，我们对称为iOtok的交互式Web纪录片进行了深入和定量的分析。iOtok的13集在每周一次的在线门户网站上发布，展示了各种功能（聊天，纪念品，动画360度全景图等）。通过分析2万多个会话，新闻通讯统计数据和一份在线问卷，我们讨论了序列化和交互性对受众接收和用户参与的影响。数据显示，对于iOtok，序列化产生了积极的影响（随着时间的流逝，大量的会话，很长的现场时间）。但是，某种程度上出乎意料的是，每次点击都会导致大量用户在到达核心视频之前退出并退出Web门户。本文还介绍了Web纪录片的其他方面，例如各种媒体随着时间的推移接触和吸引用户的效率以及已注册和未注册用户之间的行为差​​异。