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Optimal Parameter Selection of H.264 Encoder For Mobile Devices

모바일 기기를 위한 H.264 인코더의 최적 매개변수의 결정

  • Ryu, Minhee (Department of Computer Science and Engineering, Chungnam National University) ;
  • Kim, Hyungshin (Department of Computer Science and Engineering, Chungnam National University)
  • 류민희 (충남대학교 컴퓨터공학과) ;
  • 김형신 (충남대학교 컴퓨터공학과)
  • Received : 2012.07.20
  • Accepted : 2012.10.11
  • Published : 2012.10.31

Abstract

As many mobile devices such as smart phones and tablets are widely spread, optimized mobile video encoder used during video recording application is needed. In this paper, we implemented H.264/AVC base profile video encoder on a mobile device and empirically optimized control parameters of the encoder. As the experiment, we more than 100 test cases were designed with varying Lagrangian optimization, Hadamard Transform, search range, I-frame period, and reference frames. During the experiment, we measured picture quality, bit-rate, encoding time, motion estimation time, and power consumption. From the result, we can determine optimal values for the H.264 control parameters.

Keywords

Video encoder;Mobile video;H.264;Encoder optimization;Energy consumption

Acknowledgement

Supported by : 한국연구재단

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