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.
|Proceedings of SPIE - The International Society for Optical Engineering
|Published - 2000
|Visual Communications and Image Processing 2000 - Perth, Aust
継続期間: 2000 6月 20 → 2000 6月 23
ASJC Scopus subject areas
- コンピュータ サイエンスの応用