Visualization of personal history for video navigation

Figure 1. Our prototype history-based interface called the Video History System (VHS) aids navigation through the management of a user’s personal viewing history. Playback of video is controlled with familiar tools such as play/pause, seek and filmstrip (left)- the VHS records each part of the video viewed by the user. The history is then visualized in one of two ways: as Video Tiles (centre) or as a Video Timeline (right).1 We present an investigation of two different visualizations of video history: Video Timeline and Video Tiles. Video Timeline extends the commonly employed list-based visualization for navigation history by applying size to indicate heuristics and occupying the full screen with a two-sided timeline. Video Tiles visualizes history items in a grid-based layout by follow-ing pre-defined templates based on items ’ heuristics and or-dering, utilizing screen space more effectively at the expense of a clearer temporal location. The visualizations are com-pared against the state-of-the-art method (a filmstrip-based visualization), with ten participants tasked with sharing their previously-seen affective intervals. Our study shows that our visualizations are perceived as intuitive and both outperform and are strongly preferred to the current method. Based on these results, Video Timeline and Video Tiles provide an ef-fective addition to video viewers to help manage the growing quantity of video. They provide users with insight into their navigation patterns, allowing them to quickly find previously-seen intervals, leading to efficient clip sharing, simpler au-thoring and video summarization

Video Navigation with a Personal Viewing History

Abstract. We describe a new video interface based on a recorded personal navigation history which provides simple mechanisms to quickly find and watch previously viewed intervals, highlight segments of video the user found interesting and support other video tasks such as crowd-sourced video popularity measures and consumer-level video editing. Our novel history interface lets users find previously viewed intervals more quickly and provides a more enjoyable video navigation experience, as demonstrated by the study we performed. The user study tasked participants with viewing a pre-defined history of a subset of the video and answering questions about the video content: 83.9 % of questions (average) were answered correctly using the personal navigation history, while 65.5 % were answered using the state-of-art method; they took significantly less time to answer a question using our method. The full video navigation interface received an 82 % average QUIS rating. The results show that our history interface can be an effective part of video players and browsers