Interactive MPEG-4 low-bit-rate speech/audio transmission over the Internet

Fang Liu; JongWon Kim; C.-C. Jay Kuo

doi:10.1117/12.371205

22 November 1999 Interactive MPEG-4 low-bit-rate speech/audio transmission over the Internet

Fang Liu, JongWon Kim, C.-C. Jay Kuo

Proceedings Volume 3845, Multimedia Systems and Applications II; (1999) https://doi.org/10.1117/12.371205
Event: Photonics East '99, 1999, Boston, MA, United States

Abstract

The recently developed MPEG-4 technology enables the coding and transmission of natural and synthetic audio-visual data in the form of objects. In an effort to extend the object-based functionality of MPEG-4 to real-time Internet applications, architectural prototypes of multiplex layer and transport layer tailored for transmission of MPEG-4 data over IP are under debate among Internet Engineering Task Force (IETF), and MPEG-4 systems Ad Hoc group. In this paper, we present an architecture for interactive MPEG-4 speech/audio transmission system over the Internet. It utilities a framework of Real Time Streaming Protocol (RTSP) over Real-time Transport Protocol (RTP) to provide controlled, on-demand delivery of real time speech/audio data. Based on a client-server model, a couple of low bit-rate bit streams (real-time speech/audio, pre- encoded speech/audio) are multiplexed and transmitted via a single RTP channel to the receiver. The MPEG-4 Scene Description (SD) and Object Descriptor (OD) bit streams are securely sent through the RTSP control channel. Upon receiving, an initial MPEG-4 audio- visual scene is constructed after de-multiplexing, decoding of bit streams, and scene composition. A receiver is allowed to manipulate the initial audio-visual scene presentation locally, or interactively arrange scene changes by sending requests to the server. A server may also choose to update the client with new streams and list of contents for user selection.

Citation Download Citation

Fang Liu, JongWon Kim, and C.-C. Jay Kuo "Interactive MPEG-4 low-bit-rate speech/audio transmission over the Internet", Proc. SPIE 3845, Multimedia Systems and Applications II, (22 November 1999); https://doi.org/10.1117/12.371205

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KEYWORDS

Multiplexing

Internet

Receivers

Computer programming

Prototyping

Feedback control

Computer architecture

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