Advanced Content Authoring and Viewing Tools Using Aggregated Video and Slide Synchronization by Key Marking for Web-Based e-Learning System in Higher Education

Sila CHUNWIJITRA, Arjulie JOHN BERENA, Hitoshi OKADA, Haruki UENO

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Summary :

In this paper, we propose a new online authoring tool for e-Learning system to meet the social demands for internationalized higher education. The tool includes two functions – an authoring function for creating video-based content by the instructor, and a viewing function for self-learning by students. In the authoring function, an instructor creates key markings onto the raw video stream to produce virtual video clips related to each slide. With key markings, some parts of the raw video stream can be easily skipped. The virtual video clips form an aggregated video stream that is used to synchronize with the slide presentation to create learning content. The synchronized content can be previewed immediately at the client computer prior to saving at the server. The aggregated video becomes the baseline for the viewing function. Based on aggregated video stream methodology, content editing requires only the changing of key markings without editing the raw video file. Furthermore, video and pointer synchronization is also proposed for enhancing the students' learning efficiency. In viewing function, video quality control and an adaptive video buffering method are implemented to support usage in various network environments. The total system is optimized to support cross-platform and cloud computing to break the limitation of various usages. The proposed method can provide simple authoring processes with clear user interface design for instructors, and help students utilize learning contents effectively and efficiently. In the user acceptance evaluation, most respondents agree with the usefulness, ease-of-use, and user satisfaction of the proposed system. The overall results show that the proposed authoring and viewing tools have higher user acceptance as a tool for e-Learning.

Publication
IEICE TRANSACTIONS on Information Vol.E96-D No.8 pp.1754-1765
Publication Date
2013/08/01
Publicized
Online ISSN
1745-1361
DOI
10.1587/transinf.E96.D.1754
Type of Manuscript
PAPER
Category
Educational Technology

Authors

Sila CHUNWIJITRA
  Graduate University of Advanced Studies
Arjulie JOHN BERENA
  National Institute of Informatics
Hitoshi OKADA
  National Institute of Informatics
Haruki UENO
  National Institute of Informatics

Keyword

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