대화형 멀티미디어 서비스를 위한 차세대 멀티미디어 콘텐츠의 국제 표준 규격인 MPEC-4에서는 저작된 콘텐츠를 저장하기 위한 포맷으로 XMT (extensible MPEG-4 Textual format)와 MPEG-4 파일 포맷 (MP4)를 제공하고 있다. XMT와 MP4는 각각 텍스트 형식과 이진 형식이며 각기 장단점을 가지고 있으므로, 콘텐츠의 효율적인 저작, 관리 및 스트리밍을 위해서는 두 포맷간의 상호 변환을 수행할 구 있는 컨버터가 필요하다. 또한 나날이 콘텐츠의 종류와 수가 증가됨에 따라 MPEG-4 콘텐츠의 용이한 검색도 필요하다. 따라서 본 논문에서는 MPEG-4에 기반을 둔 대화형 콘텐츠를 저작하고 검색하기 위한 XMT-A to/from MP4 컨버터를 설계하고 구현하였다.
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