Effective Frame Rate Decision by Lagrange Optimization for Frame Skipping Video Transcoding

Authors:
Ching-Ting Hsu;Chia-Hung Yeh;Mei-Juan Chen
Affiliations:
Department of Electrical Engineering, National Dong-Hwa University,;Department of Electrical Engineering, National Sun Yet-Sen University, and Center for Wireless Multimedia Communications, National Sun Yet-Sen University, Taiwan, R.O.C.;Department of Electrical Engineering, National Dong-Hwa University,
Venue:
ISVC '08 Proceedings of the 4th International Symposium on Advances in Visual Computing, Part II
Year:
2008

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Abstract

Video transmission is one of the popular research topics of the multimedia communication. Since various channels have different characteristics, video transcoder can be used to adapt a pre-coded video bitstream to satisfy these channels. A problem faced by the transcoding systems is the way to decide the optimal frame rate for different channels. In this paper, this problem is converted into the constrained optimization problem, and the frame rate decision method is presented based on Lagrange function. Experimental results show that the proposed method can achieve higher coding performance than the conventional algorithm.