Title :
A study of the host-network interface for MPEG based desktop video conferencing
Author :
Anirudhan, P.N. ; Chang, Helen S. ; Izzard, Martin J.
Author_Institution :
Integrated Syst. Lab., Texas Instrum. Inc., Dallas, TX, USA
Abstract :
This paper describes the experimental transport of a full motion MPEG-1 system stream (combines audio, video and timing information) over an ATM network. We analysed the factors related to the host interface that affected the video and audio quality. We found that in order to achieve high resolution video conferencing at the desktop, a dedicated hardware decoder is needed. Furthermore, software handling of the MPEG-1 packets introduces jitter greater than 250 ms due to the underlying non-real time operating system. We plan to use the results to define and develop a dedicated network-interface and audio-video decoder-encoder subsystem that unloads the PC and facilitates video conferencing and video playback
Keywords :
audio coding; code standards; decoding; jitter; local area networks; network interfaces; telecommunication standards; teleconferencing; video coding; 250 ms; ATM LAN; ATM network; MPEG based desktop video conferencing; audio information; audio quality; audio-video decoder-encoder subsystem; experimental transport; full motion MPEG-1 system stream; hardware decoder; high resolution video conferencing; host-network interface; jitter; timing information; video information; video playback; video quality; Asynchronous transfer mode; Bandwidth; Decoding; Hardware; Jitter; Protocols; Streaming media; Timing; Video on demand; Videoconference;
Conference_Titel :
Global Telecommunications Conference, 1995. GLOBECOM '95., IEEE
Print_ISBN :
0-7803-2509-5
DOI :
10.1109/GLOCOM.1995.502743
