Implementing multiplexing, streaming, and server interaction for MPEG-4

Abstract

Abstract-We describe the implementation of a streaming client-server system for object-based audio-visual presentations in general and MPEG-4 content in particular. The system augments the MPEG-4 demonstration software implementation (IM1) for PC's by adding network-based operation with full support for the Delivery Multimedia Integration Framework (DMIF) specification, a streaming PC-based server with DMIF support (via Xbind Inc.'s XDMIF suite), and multiplexing software. We describe XDMIF, the first reference implementation of the DMIF specification. The MPEG-4 server is designed for delivering object-based audio-visual presentation. We discuss the issues in the design and implementation of MPEG-4 servers. The system also implements a novel architecture for client-server interaction in object-based audio-visual presentations, using the mechanism of command routes and command descriptors. This new concept of command routes and command descriptors is useful in developing sophisticated interactive applications.Index Terms-Delivery Multimedia Integration Framework (DMIF), interactive presentations, MPEG-4, multimedia delivery, multiplexing.

MPEG-4 systems and applications

“…We intend to demonstrate the MPEG4 Systems functionality along with a few MPEG4 applications including interactive TV. A detailed description of the system can be found in [4].…”

Multiplexing H.264 video with AAC audio bit streams

“…Advanced audio coding (AAC) [17][18][19][20][21] is a standardized lossy compression scheme for audio, used in MPEG-2 [17], and MPEG-4 [22,23]. This codec showed higher coding efficiency and superior performance at both low and high bit rates, as compared to MP3 and AC3.…”

Scaleable GIS data transmission and visualisation

“…Multiplexing, synchronisation of several streams, session control and client-server architecture used by MPEG4 are described for example in [4] and [13]. In this approach, several data channels and one control channel are used.…”