Abstract
Digital video is becoming increasingly ubiquitous. However, editing video remains difficult for several reasons: it is a time-based medium, it has dual tracks of audio and video, and current tools force users to work at the smallest level of detail. Based on interviews with professional video editors, we developed a video editor, called Silver, that uses metadata to make digital video editing more accessible to novices. To help users visualize video, Silver provides multiple views with different semantic content and at different levels of abstraction, including storyboard, editable transcript, and timeline views. Silver offers smart editing operations that help users resolve the inconsistencies that arise because of the different boundaries in audio and video. We conducted a preliminary user study to investigate the effectiveness of the Silver smart editing. Participants successfully edited video after only a short tutorial, both with and without smart editing assistance. Our research suggests several ways in which video editing tools could use metadata to assist users in the reuse and composition of video.
Highlights
We start with systems that use metadata for video editing
We describe Informedia, which is our source of video and its corresponding metadata
To address the problems of video editing mentioned above, we developed Silver, a digital video editor
Summary
Many exciting research projects are investigating how to search, visualize, and summarize digital video, there is little work on new ways to support the use of the video beyond just playing it. This is unfortunate, because video editing has several unique challenges not found with other media. Republish, to post on servers or to redistribute to lists, requires specific permission and/or a fee Another challenge for editing video is that it is a dual medium. Finding a specific word or sentence using a waveform is tedious.1 These problems make editing video a difficult, tedious, and errorprone activity.
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