Expanding network video capacity with delay-cognizant video coding

Yuan-Chi Chang; David G. Messerschmitt; Thom Carney

doi:10.1117/12.334730

28 December 1998 Expanding network video capacity with delay-cognizant video coding

Yuan-Chi Chang, David G. Messerschmitt, Thom Carney

Proceedings Volume 3653, Visual Communications and Image Processing '99; (1998) https://doi.org/10.1117/12.334730
Event: Electronic Imaging '99, 1999, San Jose, CA, United States

Abstract

Prior work on statistical multiplexing of variable-bit-rate network video shows higher video capacity (more video connections) can be supported if connections have smoother traffic profiles. For delay critical applications like videoconferencing, smoothing a compressed bit stream indiscriminately is not an option because excess delay would be introduced. In this paper, we presented an application of delay cognizant video coding (DCVC) to expand the network video capacity by performing traffic smoothing discriminatively. DCVC segments the raw video data and generates two compressed video flows with differential delay requirements, a delay-critical flow and a delay-relaxed flow. The delay-critical flow carries less video information and is thus less bursty. The delay-relaxed flow complements the first flow and the magnitude of its bursts can be reduced by traffic smoothing. We demonstrated that at equal visual quality measured in PSNR, the network video capacity could be increased by as mush as 50 percent through the two-flow discriminative traffic smoothing.

Citation Download Citation

Yuan-Chi Chang, David G. Messerschmitt, and Thom Carney "Expanding network video capacity with delay-cognizant video coding", Proc. SPIE 3653, Visual Communications and Image Processing '99, (28 December 1998); https://doi.org/10.1117/12.334730

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available