PERFORMANCE ANALYSIS OF AVS-M AND ITS APPLICATION IN MOBILE ENVIRONMENT By Vidur Vajani ( ) Under the guidance of Dr. K R. Rao

Introduction AVS stands for the Audio Video coding Standard Workgroup of China, who develops audio/video coding standards as well as system and digital right management standards AVS-M is the AVS video coding standard targeting for mobile multimedia applications AVS M is a Jiben Profile (7 th profile) out of the 10 different profiles of AVS.

Objective:  This project will provide an insight into the AVS-M video standard, architecture of AVS-M codec, features it offers and various data formats it supports  A study will be done on the key techniques such as transform and quantization, intra prediction, quarter-pixel interpolation, motion compensation modes, entropy coding and in-loop de-blocking filter.

History[17] Figure 1 : History of audio video coding standards [17]

Coding and Decoding Process [1] Figure 2 : Basic block diagram of encoder and decoder [1]

AVS Structure[2] Figure 3 : layered structure [2]

Profile Comparison[4] Table 1 : Comparing differenct profiles of AVS China [4]

AVS China Profiles[3] Table 2 : Profies and their applications [3]

AVS-M Encoder[8] Figuer : 4 AVS-M encoder [8]

AVS-M Decoder[8] Figure 5 : AVS-M decoder [8]

Applications Jiben Profile Record and local playback on mobile devices Multimedia Message Service (MMS) Streaming and broadcasting Real-time video conversation

References:  [1] J.Ostermann et al, “Video coding with H.264/AVC: Tools, Performance, and Complexity”, IEEE Circuits and Systems Magazine, vol. 4, Issue:1, pp. 7 – 28, Aug  [2]B. Tang, Y. Chen and W. Ji “AVS Encoder Performance and Complexity Analysis Based on Mobile Video Communication”, DOI /CMC , 2009 International Conference on Communications and Mobile Computing  [3 ]AVS working group official website,  [4]Sahana Devaraju and K.R. Rao, “A Study on AVS-M Video Standard”, M.S. Thesis, Electrical Engineering Department, University of Texas at Arlington, Arlington, TX  [5] W. Gao et al., “AVS– the Chinese next-generation video coding standard,” National Association of Broadcasters, Las Vegas,  [6] K. R. Rao and D.N. Kim, “Current Video Coding Standards: H.264/AVC, Dirac, AVS China and VC-1”, IEEE 42nd Southeastern symposium on system theory (SSST), pp. 1-8,March  [7] W.Gao and T.Huang “AVS Standard -Status and Future Plan”, Workshop on Multimedia New Technologies and Application, Shenzhen, China, Oct  [8] L.Fan, “Mobile Multimedia Broadcasting Standards”, ISBN: , Springer US,  [9] W. Gao, K.N. Ngan and L. Yu, “Special issue on AVS and its applications: Guest editorial”, Signal Process: Image Commun, vol. 24, Issue 4, pp , April  [10] Audio Video Coding Standard (AVS) of China, Ki. N. Ngan, Department of Electronic Engineering, The Chinese University of Hong Kong, 11/19/2009.  [11] M. Liu and Z. Wei, “A fast mode decision algorithm for intra prediction in AVS-M video coding” Vol 1, ICWAPR apos;07, Issue, 2-4, pp.326 –331, Nov  [12] Y. Cheng et al, “Analysis and application of error concealment tools in AVS-M decoder”, Journal of Zhejiang University – Science A, vol. 7, pp , Jan  [13] S.Hu, X.Zhang and Z.Yang, “Efficient Implementation of Interpolation for AVS”, Image and Signal Processing, Congress on Vol 3, pp133 –138, May 2008

References(contd.) [14] R. Schafer and T. Sikora, “Digital video coding standards and their role in video communications”, Proc. of the IEEE, vol. 83, pp , June [15] W.Gaoet al., “AVS–the Chinese next-generation video coding standard,” National Association of Broadcasters, Las Vegas, [16] B. Lei et al, “Optimization and Implementation of AVS-M Decoder on ARM”, DOI /ICIG , IEEE 2007 [17] L. Yu, “AVS Project and AVS-Video Techniques”, Dec.13, 2005http://www-ee.uta.edu/dip/Courses/EE5351/ISPACSAVS.pdf ISPACS 2005