Rate-distortion optimized SVC bitstream extraction for heterogeneous devices: A preliminary investigation

Wen-Hsiao Peng*, Lin Shung Huang, John K. Zao, Jiun Shien Lu, Tse Wei Wang, Hsueh Ting Huang, Lun Chia Kuo

*Corresponding author for this work

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

5 Scopus citations

Abstract

The emerging SVC standard enables partial extraction and decoding of video bitstreams, and thus allows various viewing devices to adapt their video reception and playback according to devices capability and network performance. This desirable feature, however, comes with a caveat: the parts of a bitstream needed for providing good quality playback at different devices may differ significantly depending on the visual characteristics of video programs, the quantization and dependency settings of SVC encoders as well as the display formats of viewing devices. In this paper, we present the results of our preliminary investigation on the intricate relations among these factors. We discovered a set of constraints on the setting of quantization parameters and the choices of reference layers for inter-layer dependencies that ensures good rate-distortion trade-offs and regular bitstream extraction paths. We called these constraints, the adaptation rules for inter-layer encoding, and their resulting outputs, the well-adapted layers/bitstreams. We further discovered that bitstream extraction by different viewing devices follow predictable paths if the SVC bitstream is well-adapted and the playback process extracts a complete set of interdependent network abstraction layer (NAL) units in every refinement step. These regular extraction paths enabled us to develop an efficient bitstream extraction algorithm based on local optimization of rate-distortion ratios. The experimental results using standard testing sequences confirmed our findings.

Original languageEnglish
Title of host publicationProceedings ISM Workshops 2007 - 9th IEEE International Symposium on Multimedia - Workshops
Pages407-412
Number of pages6
DOIs
StatePublished - 1 Dec 2007
EventISM Workshops 2007 - 9th IEEE International Symposium on Multimedia - Workshops - Taichung, Taiwan
Duration: 10 Dec 200712 Dec 2007

Publication series

NameProceedings ISM Workshops 2007 9th IEEE International Symposium on Multimedia - Workshops

Conference

ConferenceISM Workshops 2007 - 9th IEEE International Symposium on Multimedia - Workshops
CountryTaiwan
CityTaichung
Period10/12/0712/12/07

Keywords

  • Bitstream extraction
  • Rate-distortion optimization
  • Scalable video coding

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    Peng, W-H., Huang, L. S., Zao, J. K., Lu, J. S., Wang, T. W., Huang, H. T., & Kuo, L. C. (2007). Rate-distortion optimized SVC bitstream extraction for heterogeneous devices: A preliminary investigation. In Proceedings ISM Workshops 2007 - 9th IEEE International Symposium on Multimedia - Workshops (pp. 407-412). [4476003] (Proceedings ISM Workshops 2007 9th IEEE International Symposium on Multimedia - Workshops). https://doi.org/10.1109/ISMW.2007.4476003