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Proceedings Paper

Rate control scheme for MPEG transcoder considering drift-error propagation
Author(s): Isao Nagayoshi; Hiroyuki Kasai; Hideyoshi Tominaga
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Paper Abstract

As the transform method of video bit stream to the required bit stream format, the video transcoder has been adopted in various applications. In this paper, we focus on a MPEG video transcoder that can reduce the required bit rate by using re-quantization in the DCT domain. Furthermore, we propose a rate control method for this MPEG video transcoder that takes into consideration the estimation of drift-error propagation. First, we show the transcoder architecture with calculation of `Drift-Error Propagation Ratio'. Next, we explain the proposed rate control method that uses minimization of the sum of re-quantization Error and drift- error. Finally, from simulation experiments, we compare the proposed rate control method to the traditional rate control method in terms of complexity, required buffer size and picture quality.

Paper Details

Date Published: 30 May 2000
PDF: 12 pages
Proc. SPIE 4067, Visual Communications and Image Processing 2000, (30 May 2000); doi: 10.1117/12.386583
Show Author Affiliations
Isao Nagayoshi, Waseda Univ. (Japan)
Hiroyuki Kasai, Waseda Univ. (Japan)
Hideyoshi Tominaga, Waseda Univ. (Japan)


Published in SPIE Proceedings Vol. 4067:
Visual Communications and Image Processing 2000
King N. Ngan; Thomas Sikora; Ming-Ting Sun, Editor(s)

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