Investigation and Improved Configuration Settings for H.264 CGS/MGS Quality Scalable Coding

  • Shih-Hsuan Yang
  • Wei-Lune Tang
Part of the Communications in Computer and Information Science book series (CCIS, volume 314)


The H.264/AVC scalable video coding (SVC) includes three kinds of video scalability, namely spatial scalability, temporal scalability, and quality scalability. Two options of quality scalability, CGS and MGS, may be used in combinations to achieve various quality layers. Using the CGS alone may incur high encoding complexity. Although the use of MGS may degrade the coding efficiency, it provides higher adaptation flexibility and reduces the coding complexity. In this paper, we investigate the CGS/MGS configurations that lead to good performance. From extensive experiments using the JSVM reference software, we suggest that MGS should be carefully employed. Although MGS always reduces the encoding complexity as compared to using CGS alone, its rate-distortion performance is unstable. Some configurations may cause an unexpected PSNR decrease with an increased bit rate. We investigate the reason and resolve the anomaly by a new CGS/MGS configuration scheme that restricts motion estimation to larger matching blocks.


Scalable video coding (SVC) Rate-distortion optimization Coding complexity H.264/AVC 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    Ohm, J.-R.: Advances in Scalable Video Coding. Proceedings of the IEEE 93, 42–54 (2005)CrossRefGoogle Scholar
  2. 2.
    ITU-T Rec. H.264 (MPEG-4 AVC), Fifth Edition (including SVC and MVC extensions) (2009) Google Scholar
  3. 3.
    Schwarz, H., Marpe, D.: Overview of the Scalable Video Coding Extension of the H.264/AVC Standard. IEEE Trans. Circuits Syst. Video Technol. 17, 1102–1103 (2007)CrossRefGoogle Scholar
  4. 4.
    Pulipaka, A., Seeling, P., Reisslein, M., Karam, L.J.: Overview and Traffic Characterization of Coarse-Grain Quality Scalable (CGS) H.264 SVC Encoded Video. In: Consumer Communications and Networking Conference, pp. 1–5 (2010)Google Scholar
  5. 5.
    Görkemli, B., Şadi, Y., Tekalp, A.M.: Effects of MGS Fragmentation, Slice Mode and Extraction Strategies on the Performance of SVC with Medium-Grained Scalability. In: IEEE International Conference on Image Processing, pp. 4201–4204 (2010)Google Scholar
  6. 6.
    JSVM Software Manual, Version 9.19.9 and Version 9.19.13 (2010/2011)Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Shih-Hsuan Yang
    • 1
  • Wei-Lune Tang
    • 1
  1. 1.Department of Computer Science and Information EngineeringNational Taipei University of TechnologyTaipeiTaiwan

Personalised recommendations