首页> 外文会议>Broadband Multimedia Systems and Broadcasting, 2009. BMSB '09 >One-pass bitrate control for MPEG-4 Scalable Video Coding using ρ-domain
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One-pass bitrate control for MPEG-4 Scalable Video Coding using ρ-domain

机译:使用ρ域的MPEG-4可伸缩视频编码的一遍比特率控制

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This paper presents an attractive rate control scheme for the new MPEG-4 Scalable Video Coding standard. Our scheme enables us to control the bitrate at the output of the encoder on each video layer with great accuracy. Each frame is encoded only once, so that the computational complexity of the whole scheme is very low. The three spatial, temporal and quality scalabilities are handled correctly, as well as inter layer prediction and hierarchical B frames. A linear bitrate model is used to predict the output bitrate for a frame, based on a simple and effective framework called rho-domain. A coding-complexity measure is also introduced to dispatch the available bits among the frames, in order to get smooth quality variations throughout the encoded video stream. To attest the performances of our rate control scheme, we present comprehensive results on some representative scalable video set-ups.
机译:本文为新的MPEG-4可扩展视频编码标准提出了一种有吸引力的速率控制方案。我们的方案使我们能够以很高的精度控制每个视频层上编码器输出的比特率。每个帧仅被编码一次,因此整个方案的计算复杂度非常低。正确处理了三个空间,时间和质量可伸缩性,以及层间预测和分层B帧。基于称为rho域的简单有效的框架,线性比特率模型用于预测帧的输出比特率。还引入了编码复杂性度量以在帧之间分配可用位,以便在整个编码视频流中获得平滑的质量变化。为了证明我们的速率控制方案的性能,我们在一些具有代表性的可伸缩视频设置上给出了全面的结果。

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