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首页> 外文期刊>IEEE Transactions on Consumer Electronics >A joint rate control scheme for H.264 encoding of multiple video sequences
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A joint rate control scheme for H.264 encoding of multiple video sequences

机译：用于多个视频序列的H.264编码的联合速率控制方案

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摘要

The objective of joint rate control is to dynamically distribute the channel capacity among video sequences according to their respective complexities, thus a more uniform picture quality and a more efficient utilization of channel capacity are achieved. Most existing approaches are based on MPEG2 coding platform. This paper presents a novel joint rate control scheme for multiple video sequences coding based on H.264 standard. The joint rate control is performed hierarchically from a group of pictures of all sequences down to each picture of every sequence, depending on both the complexity of frames and the buffer occupancy. A novel complexity measure that adapts to the characteristics of H.264 video coding is proposed. An improved joint buffer control strategy, which is extended from that in the single sequence rate control scheme, is applied. Experimental results show that the proposed scheme maintains a good balance in picture quality among the sequences as well as within a sequence.
机译：联合速率控制的目的是根据各自的复杂度在视频序列之间动态分配信道容量，从而实现更均匀的图像质量和信道容量的更有效利用。现有的大多数方法都基于MPEG2编码平台。本文提出了一种新的基于H.264标准的多视频序列编码联合速率控制方案。根据帧的复杂度和缓冲区占用率，从所有序列的图片组到每个序列的每个图片分层执行联合速率控制。提出了一种适应H.264视频编码特性的复杂度度量方法。应用了一种改进的联合缓冲区控制策略，该策略是从单序列速率控制方案中扩展而来的。实验结果表明，该方案在序列间以及序列内均保持了良好的图像质量平衡。

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