Optimal multi-layer adaptation of SVC video over heterogeneous environments

  • Authors:

  • Truong Cong Thang;Dong Su Lee;Jung Won Kang;Yong Man Ro

  • Affiliations:

  • Information and Communications University, Daejeon, South Korea and Electronics and Telecommunications Research Institute, Daejeon, South Korea;Information and Communications University, Daejeon, South Korea;Electronics and Telecommunications Research Institute, Daejeon, South Korea;Information and Communications University, Daejeon, South Korea

  • Venue:
  • IWCMC '07 Proceedings of the 2007 international conference on Wireless communications and mobile computing
  • Year:
  • 2007

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Abstract

Scalable video coding (SVC) is a new video coding format which provides scalability in three dimensional (SNR-spatio-temporal) space. In this paper, we focus on the adaptation in SNR dimension. Usually, a SVC bitstream may contain multiple spatial layers, and each spatial layer may be enhanced by up to 3 FGS layers. To meet a bitrate constraint, the FGS data of different spatial layers can be truncated in various manners. However the contributions of FGS layers to the overall/collective video quality are different. In this work, we propose an optimized framework to control the SNR scalability across multiple spatial layers. Our proposed framework has the flexibility in allocating the resource (i.e. bitrate) among spatial layers, where the overall quality is defined as a function of all spatial layers' qualities and can be modified on the fly.