Interactive Content Overviews for Lecture Recordings

Abstract

Lecture recordings can be a powerful addition to traditional lectures and they can even serve as a main content source in a number of didactic scenarios. If users can quickly locate relevant passages in a recording, the recording combines the ease of search that comes with electronic text based media with the authenticity and wealth of information that is delivered in a live lecture. Locating relevant passages in a time based media such as a recorded lecture is, however, not as easy as searching an electronic text document. This paper advocates for interactive content overviews as an efficient navigation aid and presents an implementation that is based on SVG. It also discusses the feasibility of likewise approaches in other media formats.

Social navigation in web lectures: a study of virtPresenter

“…This kind of social navigation is sometimes called traffic‐based navigation. Starting with pioneer systems Juggler (Dieberger, 1997) and Footprints (Wexelblat and Mayes, 1999), traffic‐based social navigation has been used in a number of projects (Brusilovsky et al , 2004; Dieberger and Guzdial, 2003; Mertens et al , 2006a, b). More recent projects attempted to increase the reliability of social navigation by using user annotation behavior (Farzan and Brusilovsky, 2008a), bookmarking (Farzan and Brusilovsky, 2008b), and ratings (Farzan and Brusilovsky, 2006).…”

“…The next/previous navigation arrows allow stepping to the next or previous slide or animation step respectively. Clickable slide items allow navigating directly to the point in the recording's time when the slide element clicked on appeared on screen during the lecture (Mertens et al , 2006a, b). If the mouse is clicked into the timeline, a preview feature highlights that slide's boundaries in the timeline and also highlights the slide in the thumbnail overview.…”

Vector graphics for web lectures: experiences with Adobe Flash 9 and SVG

“…Structural elements are realized in two ways the simple one of which are next/previous buttons that allow navigating to the next or previous slide or animation step. A more sophisticate realization of structural elements is the interactive slide overview implemented in virtPresenter (Mertens et al, 2006c). In the overview, those parts of a slide that had been animated during the original presentation when the lecture was recorded can be clicked on with the mouse.…”

Operadores de interação multimídia para criação automática de documentos: Interactors

“…Estudos recentes do domínio educacional abordam diferentes enfoques, desde o tema dos sistemas LMS (Nodenot et al, 2006), até as ferramentas para auxiliar na preparação de apresentações pessoais (Kong e Muppala, 2007).Enfoques mais conservadores de trabalhos relacionados com aulas tipo palestras (Mertens et al, 2006;Chen e Li, 2007;Wang et al, 2008), alguns propondo novos paradigmas como aulas fora do contexto da sala e usando dispositivos móveis (Al-Imam e 2.1. APLICAÇÕES DE CAPTURA & ACESSO Lank, 2007;Pimentel et al, 2007a;Behera et al, 2007;Di et al, 2009), e outros mais individuais mediante aulas particulares para o aprendizado de uma língua estrangeira (Chen e Liu, 2006, 2009.…”

“…Uma grande parte dos trabalhos reportados na literatura usa como forma de visualização, softwares específicos (players) para os dados capturados e o contexto em que estava inserido o projeto, como no caso dos trabalhos FaericWorld (Rigamonti et al, 2007), SHALEX (Shakshuki e Halliday, 2008) e o PocketPad (Al-Imam e Lank, 2007). Alguns outros usam as técnicas tradicionais de visualização de dados capturados, como são os vídeos lineais com animações FLASH (Mertens et al, 2006;Garzotto e Forfori, 2006), ou documentos estáticos como documentos web (Wang et al, 2008), SVG (Mertens et al, 2006) ou PDF (Bulcão-Neto et al, 2008a).…”