In this paper, we propose a new online content editing system to edit the broadcasting and personal contents. The proposed editing system consists of the content management server and the content editor, in which the content management server is used for storing the contents, while the content editor is used for editing the contents via the user interface. Unlike the existing content editing methods which edit the downloaded contents, the proposed editing system edits the contents stored in the content management server while the content editor plays them by using the streaming technology. However, it is not effective to edit the whole segments of contents while playing them by using the streaming technology. To resolve the problem, the proposed editing system performs the scene detection of the contents, and the detected scene information is used for playing and editing of contents. After completing the content editing, the edited information is uploaded to the content management server as a metadata format. In the proposed editing system, both scene and edited information are represented only as the metadata format, and the physical content segmentation according to the scene and edited information is not performed. The implementation results show that the proposed editing system provides similar performances with the existing content editing methods which use the content download and editing methods.Keyword : Online, Content Editing, Editing System, Broadcasting Contents, Personal Contents 정규논문 (Regular Paper) 방송공학회논문지 제20권 제4호, 2015년 7월 (JBE Vol. 20, No. 4, July 2015) http://dx.doi.org/10. 5909/JBE.2015.20.4.619 ISSN 2287-9137 (Online) ISSN 1226 620 방송공학회논문지 제20권 제4호, 2015년 7월 (JBE Vol. 20, No. 4, July 2015) Ⅰ. 서 론