A study on the rate control method for MPEG transcoder considering drift-error propagation
A study on the rate control method for MPEG transcoder considering drift-error propagation
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考虑漂移误差传播的MPEG转码码率控制方法研究
DOI：
10.1109/icip.2000.901120
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
H. Tominaga
中科院分区：
文献类型：
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作者：
Isao Nagayoshi;H. Kasai;H. Tominaga
视频转码器作为将视频码流转换成所需码流格式的方法，已经被广泛应用。在本文中，我们专注于MPEG视频转码器，可以减少所需的比特率，通过使用在DCT域的再量化。此外，我们提出了一个速率控制方法，这个MPEG视频转码器，考虑到漂移误差传播的估计。其次，通过仿真实验，我们比较了所提出的码率控制方法和传统的码率控制方法在复杂度、所需的缓冲区大小和图像质量方面的差异。
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. Next, 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.