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Mathematical Problems in Engineering
Volume 2013 (2013), Article ID 373689, 6 pages
http://dx.doi.org/10.1155/2013/373689
Research Article

Adaptive Rate Control Algorithm for H.264/AVC Considering Scene Change

School of Electronic and Information Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China

Received 2 November 2012; Revised 1 January 2013; Accepted 1 January 2013

Academic Editor: Ming Li

Copyright © 2013 Xiao Chen and Feifei Lu. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Scene change in H.264 video sequences has significant impact on the video communication quality. This paper presents a novel adaptive rate control algorithm with little additional calculation for H.264/AVC based on the scene change expression. According to the frame complexity quotiety, we define a scene change factor. It is used to allocate bits for each frame adaptively. Experimental results show that it can handle the scene change effectively. Our algorithm, in comparison to the JVT-G012 algorithm, reduces rate error and improves average peak signal-noise ratio with smaller deviation. It cannot only control bit rate accurately, but also get better video quality with the lower encoder buffer fullness to improve the quality of service.