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Efficient Video Transcoding from H.263 to H.264/AVC Standard with Enhanced Rate Control

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A new video coding standard H.264/AVC has been recently developed and standardized. The standard represents a number of advances in video coding technology in terms of both coding efficiency and flexibility and is expected to replace the existing standards such as H.263 and MPEG-1/2/4 in many possible applications. In this paper we investigate and present efficient syntax transcoding and downsizing transcoding methods from H.263 to H.264/AVC standard. Specifically, we propose an efficient motion vector reestimation scheme using vector median filtering and a fast intraprediction mode selection scheme based on coarse edge information obtained from integer-transform coefficients. Furthermore, an enhanced rate control method based on a quadratic model is proposed for selecting quantization parameters at the sequence and frame levels together with a new frame-layer bit allocation scheme based on the side information in the precoded video. Extensive experiments have been conducted and the results show the efficiency and effectiveness of the proposed methods.


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Correspondence to Viet-Anh Nguyen.

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Nguyen, V., Tan, Y. Efficient Video Transcoding from H.263 to H.264/AVC Standard with Enhanced Rate Control. EURASIP J. Adv. Signal Process. 2006, 083563 (2006).

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  • Quantum Information
  • Selection Scheme
  • Motion Vector
  • Allocation Scheme
  • Quadratic Model