Real-Time Video and Audio IN THE World Wide Web

Zhigang Chen, See Mong Tan, Roy H. Campbell, Yongcheng Li

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The architecture of World Wide Web (WWW) browsers and servers supports full-file transferfor document retrieval. TCP is usedfor data transfers by Web browsers and their associated Hypertext Transfer Protocol (HTTP) servers. Full-file transfer and TCP are unsuitable for continuous media, such as realtime audio and video. In orderfor the WWW to support continuous media, we require the transmission of video and audio on demand and in real time, as well as new protocolsfor real-time data. We extend the architecture of the WWW to encompass the dynamic, real-time information space of video and audio. Our WWW browser Vosaic, shortfor Video Mosaic, incorporates real-time video and audio into standard hypertext pages that are displayed in place. Video and audio transfers occur in real time; there is no file-retrieval latency. The video and audio result in compelling Web pages. Real-time video and audio data can be effectively served over the present day Internet with the proper transmission protocol. We have developed a real-time protocol called VDP that we specialized for handling real-time video over the WWW.- VDP reduces inter-frame jitter and dynamically adapts to the client CPU load and network congestion. Our WWW server dynamically changes transfer protocols, adapting to the request stream and the metainformation in requested documents. Experiments show a 44-fold increase in received video-frame rate (0.2 frames-per-second (Jps) to 9 fps) with the use of VDP in lieu of TCP, with a commensurate improvement in observed video quality. Our work enables a video-enhanced Web.

Original languageEnglish (US)
Title of host publication4th International World Wide Web Conference
Subtitle of host publicationThe Web Revolution, WWW 1995 - Conference Proceedings
PublisherAssociation for Computing Machinery
Number of pages16
ISBN (Electronic)1565921690, 9781565921696
StatePublished - Dec 11 1995
Event4th International World Wide Web Conference: The Web Revolution, WWW 1995 - Boston, United States
Duration: Dec 11 1995Dec 14 1995

Publication series

Name4th International World Wide Web Conference: The Web Revolution, WWW 1995 - Conference Proceedings


Conference4th International World Wide Web Conference: The Web Revolution, WWW 1995
Country/TerritoryUnited States


  • Video
  • audio. World Wide Web
  • networkprotocols
  • real time

ASJC Scopus subject areas

  • Computer Networks and Communications


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