PostScript (37 KB)
Word (19 KB)A Proposed Architecture for an Object-Based Audio-Visual Bitstream and Terminal
Contribution M1619, 38th MPEG Meeting, Seville, Spain, February 1997
Abstract
This document describes an architecture for an object-based audio-visual terminal, expanding on the current design of the MPEG-4 System WD. The architecture assumes an object-oriented bitstream structure consisting of objects, composition information, and scene demarcation, which is described in detail in this document. The bitstream architecture allows on-line editing (cut and paste, insertions/deletions, grouping, special effects), and takes into account video-specific object structures (namely, predictive and interpolative object coding). This proposal eliminates the need to describe scenes by Java classes, thus decoupling the representation from any programmability requirements at the decoder.