Collaborative synchronous video annotation via the watch-and-comment paradigm

  • Authors:

  • Vivian G. Motti;Roberto Fagá, Jr.;Renan G. Catellan;Maria da Graça C. Pimentel;Cesar A.C. Teixeira

  • Affiliations:

  • Universidade de Sao Paulo, Sao Carlos, Brazil;Universidade de Sao Paulo, Sao Carlos, Brazil;Universidade de Sao Paulo, Sao Carlos, Brazil;Universidade de Sao Paulo, Sao Carlos, Brazil;Universidade Federal de Sao Carlos, Sao Carlos, Brazil

  • Venue:
  • Proceedings of the seventh european conference on European interactive television conference
  • Year:
  • 2009

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Abstract

Earlier work has described the WaCTool, which allows a user to perform multimodal annotations (text, digital ink and audio comments) and edit operations on a linear video, producing an interactive video as a result. The fact that the prototype had been extended to allow users to use an integrated chat and share resources in a peer-to-peer-based environment lead users to identify an opportunity to share digital ink notes. The work reported in this paper aims at evaluating a prototype designed to allow the synchronous collaborative editing comments on top of video frames selected by users for annotation. We discuss our aim in allowing this new form of collaboration and present the results of evaluation using four complementary methods: think aloud, heuristics, cognitive walkthrough and questionnaires.