In this paper, we describe an interface for browsing and skipping digital video content in a consumer setting; that is, sitting and watching television from a couch using a standard remote control. We compare this interface with two other interfaces that are in common use today and found that subjective satisfaction was statistically better with the new interface. Performance metrics however, like time to task completion and number of clicks were worse.

Silver is an authoring tool that aims to allow novice users to edit digital video. The goal is to make editing of digital video as easy as text editing. Silver provides multiple coordinated views, including project, outline, subject, storyboard, textual transcript and timeline views. Selections and edits in any view are synchronized with all other views. A variety of recognition algorithms are applied to the video and audio content and then are used to aid in the editing tasks. The recognition algorithms and metadata used to support intelligent editing are supplied by the Informedia Digital Library, which also serves as the repository and search mechanism. The metadata includes shot boundaries and a time-synchronized transcript, which are used to support intelligent selection and intelligent cut/copy/paste. Keywords Digital video editing, multimedia authoring, video library, Silver, Informedia. 1. INTRODUCTION Digital video is becoming increasingly ubiquitous. Most camcorders today...

Webcast systems support real-time webcasting, and may also support access to the stored webcasts. Yet, research rarely examines issues concerning the interface to webcast systems, another form of multimedia system. This paper focuses specifically on how stored webcasts are re-used. Sixteen participants performed three typical information tasks using ePresence, a webcasting system that handles both live and stored video, and contains several tools: a video window, a timeline of the webcast, slides used by the presenter, and a moderator-generated table of contents, that facilitate user access to the intellectual content of a stored video. Use takes place at the level of the webcast, and our analysis assessed user interactivity. The results showed that different types of tasks need different strategies and tools.

Introduction. Having information available in digital format has many clear advantages including fast and cheap transfer of information, free and unlimited ridership, easy versioning and the capacity for easy and cheap storage of large amounts of information. Effective and fast content based access to information is something that has not been easy with analogue information but since practically all of the information we use in our daily lives is in digital format, or soon will be, contentbased operations are an important goal. This will open up the prospects of content based operations such as search, filtering, alerting, summarisation and so on, which could not have been achieved heretofore. In this chapter we concentrate on content based operations on information stored in continuous media such as audio and video. Although the techniques we outline can be applied to other content-based operations besides retrieval we restrict our discussion to the searching task which we re

This paper describes the organisational and playback features of Fschlr, a digital video library that allows users to record, browse and watch television programmes online. Programmes that can be watched and recorded are organised by personal recommendations, genre classifications, name and other attributes for access by general television users. Motivations and interactions of users with online television libraries are outlined and they are also supported by personalised library access, categorised programmes, a combined player browser with content viewing history and content marks. The combined player browser supports a user who watches a programme on different occasions in a non-sequential order. Keywords: Digital video library, Content browsing, Library organisation, Recommendation systems, Personalisation 1.

Video content becomes increasingly important in WWW applications as the emerging global cyber infrastructure develops. Improvements in hardware (e.g., fast CPUs, graphics chips, inexpensive mass storage, inexpensive video cameras, cell phones), software (e.g., video editors, video player extensions to web browsers and other general-purpose applications, web development environments), and networking

Abstract. Content-based video navigation is an efficient method for browsing video information. A common approach is to cluster shots into groups and visualize them afterwards. In this paper, we present a prototype that follows in general this approach. The clustering ignores temporal information and is based on a growing self-organizing map algorithm. They provide some inherent visualization properties such as similar elements can be found easily in adjacent cells. We focus on studying the applicability of SOMs for video navigation support. We complement our interface with an original time bar control providing – at the same time – an integrated view of time and content based information. The aim is to supply the user with as much information as possible on one single screen, without overwhelming him. 1

A flexible image browsing interface tester: Design, implementation and preliminary results in a face recognition test.

ications for TV programme notification, alerting, recording request, etc. 2. USER INTERFACE FRAMEWORK To be able to design and provide many alternative browsing interfaces to users, we have developed an interface design framework for keyframe browsing (full details can be found in [Lee 00b]) which we later use to design interfaces for handheld devices. In summary, by analysing the essential elements of keyframe browsing interfaces, we came up with three "dimensions" and possible "values" for each dimension: (1) Layeredness - consideration about different details or granularity of the browsable keyframe space. Design options (or values) for this dimension are Single layer, Multiple layer with/without navigational link, etc. (2) Temporal orientation - what kind of time information to be provided on the interface. Values for this dimension are Absolute time (e.g. timestamp in each keyframe), Relative time (e.g. timeline bar), etc. (3) Spatial vs. temporal presentation

. Fschlr is a shared video retrieval system that lets users record, browse and watch television programmes using their web browser. In Fschlr, the programmes users can watch and record are organised by channel, by theme and by personal recommendation as provided by the ChangingWorlds' ClixSmart personalisation engine. Our initial results from user trials illustrate the usage of each of these features. 1