Composer: Authoring Tool for iTV Programs

Authors:
Rodrigo Laiola Guimarães;Romualdo Monteiro De Resende Costa;Luiz Fernando Gomes Soares
Affiliations:
CWI: Centrum voor Wiskunde en Informatica, Amsterdam, The Netherlands 1098 SJ;PUC-Rio: Pontifícia Universidade Católica do Rio de Janeiro, Rio de Janeiro, Brazil 22453-900;PUC-Rio: Pontifícia Universidade Católica do Rio de Janeiro, Rio de Janeiro, Brazil 22453-900
Venue:
EUROITV '08 Proceedings of the 6th European conference on Changing Television Environments
Year:
2008

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Abstract

This paper presents Composer, an authoring tool to help creating interactive TV programs for the Brazilian Terrestrial Digital TV System. In Composer, several abstractions are defined creating different document views (structural, temporal, layout and textual). One of these views, the temporal view, preserves as much as possible the timeline paradigm, so popular in TV program editing. Using this view, authoring can be done by placing media objects on a time axis, however, preserving the relative relationships among them. Moreover, non-deterministic time events, like viewer interactions and content adaptations, can also be represented in the temporal view. In addition, the occurrence of these unpredictable events can be simulated, and the resulting TV program played, from any starting point. Besides other facilities provided by its four views, Composer also supports third-party views created as add-ons, and live program editing.