该算法包括首发视频选择算法，丢包率预测算法，以及自适应视频码率调整算法。
The algorithms, including the choice of the first video algorithm, packet loss rate prediction algorithm, as well as video rate adaptive adjustment algorithm.
对于高效的视频通信，降低原始视频码率是必要的步骤之一：而另一个同等重要的任务是处理通信网络中的差错和损失。
For effective video communications, reduction of raw video data, rates is one of the necessary steps. Another equally important task is how to handle errors and losses in a communication network.
因此，几乎每一个视频标准都相应有自己的一个或者多个码率控制策略。
Therefore, almost every video coding standard has one rate control strategy and even more.
帧间预测是视频压缩的关键技术之一，能有效消除视频编码中的时间冗余，降低编码码率，提高编码效率。
Interframe prediction is key to video compression and can effectively eliminate the time redundancy of video coding, reduce coding rate and enhance coding efficiency.
同时，该算法的计算复杂度低，完全能满足视频服务器实时码率分配的要求。
Simultaneously, the computational complexity of the proposed method is low enough to meet the requirements of the real time rate allocation at the video server.
介绍了因特网上一种端到端的MPEG - 4视频网络传输结构的自适应码率控制方案。
This paper addresses an adaptive rate control scheme for MPEG-4 video based on an end-to-end architecture over Internet.
运动矢量的预测是视频编码技术中的一个重要组成部分，它直接关系到运动估计的精度和码率大小。
Motion Vector prediction forms a key part of video coding technique in that it directly affects the bitrate and performance of motion estimation.
在视频编码中，码率控制的目的是：在满足带宽约束的条件下，提高编码图像的质量。
In video coding, the purpose of rate control is to improve picture quality while subject to the bandwidth constraint.
为提高实时视频编码的图像质量，提出了一种低复杂度单通道视频编码的可变码率(VBR)控制算法。
To improve the image quality of real time video encoder, a low complexity variant bit rate (VBR) control algorithm for single-pass video encoding was proposed.
作为对视频转换编码及码率控制研究的基础，本文首先介绍了几种主要的视频编码标准。
As the basis of the following research on transcoding and rate control, several related video coding standards are introduced in this thesis first.
提出了更新算子的优化设计，以提高低码率下视频编码的可扩展性，并取得改善的重建视频质量。
An optimized update operator in lifting implementation is proposed to improve scalability under low bit rate and the quality of reconstructed video.
在大多数视频压缩标准中，码率控制方法都是针对中高码率情况而设计的，而在较低码率情况下的工作情况都不够理想。
Most of the bit-rate control schemes in video-compression standards are designed for medium and high bit - rate conditions, while do not work well for low bit-rate.
提出一种面向立体视频的比特分配与码率控制算法以提高立体视频的编码效率和码流可靠性。
A new bit-allocation and rate-control algorithm for stereo video coding was proposed to improve its coding efficiency and stream reliability.
为了解决低码率视频完整性认证问题，提出了一种基于脆弱水印的视频认证方案。
In order to solve the problem of integrality authentication for low bit-rate video, a novel video authentication schema based on the fragile watermark is proposed.
提出了一种充分利用人类视觉系统特性的MPEG视频码流码率转换方法。
In this paper, we propose a new bit-rate transcoding method for MPEG video streams, which can utilize human visual system characteristics adequately.
在相同的主观视频质量下，码率减少50％左右。
实验仿真结果显示，本文的算法在有效的控制输出码率稳定的同时，有效的提高的立体视频的立体感。
The experiment results demonstrate that the proposed scheme can improve perspective of the stereo video as well as control the stability of output rate effectively.
首先，本文介绍码率控制算法的应用环境——各种视频编码协议。
Firstly, we introduce the video coding standard where the rate control algorithm is used.
相信所做的这些工作对甚低码率视频图像编码的实际应用和推广将起到推动作用。
Therefore what has been studied should be a promotion to make very low bit rate video coding work in practice and in wide use.
非理想因素一般是使误码率变坏，但有时，如视频波形的限幅，在一定条件下竟能得到比理想情况更好的误码率。
In some cases, however, such as the clipping of the video waveform, the bit error rate under certain conditions can be lower than under ideal conditions.
实验结果表明，与平均码率分配算法相比，该算法可以显著降低视频图像中人眼感兴趣区域重建质量的波动。
The experimental results show that, compared with the conventional average rate allocation algorithm, the proposed algorithm can significantly eliminate the quality fluctuation of ROI.
在低码率或超高清晰度视频特别是数字电影应用中，压缩噪声会影响观看质量。
In low bit rate application or high definition player system such as digital cinema, coding artifacts will be very annoying.
这就需要采用码率控制技术来调整并控制视频源的输出比特率，以获得在质量和带宽利用间的最佳均衡。
Rate control techniques must then be employed to regulate and control the output bit rates of video sources in the network to achieve the best trade-off between quality and bandwidth utilization.
模型基图像编码自80年代初提出后，由于在低码率情况下有高的主观图像质量，作为视频编码的方法得到了广泛的重视。
Since the model based coding being presented from early 80's, it has got extensive attention as a video coding method due to high subject image quality and low bit rates.
为实现卫星自维护遥操作系统中稳定可靠的视频反馈目标，提出一种基于分层码率控制的视频传输策略。
To realize the stable video feedback in the satellite self-servicing telerobotics system, a scheme based on scalable bit rate control is proposed.
模拟结果表明，此项缓存控制技术不仅能准确预测编码码率，而且能自适应视频的场景变化，使解码图像质量比较均匀。
Simulation result shows that the buffer control strategy can not only predict the video coder's output correctly, but also adapt the scene changes in video, get similar decoded image quality.
比较了目前分布式视频系统的各种码率估计算法性能，并提出了改进的码率估计算法。
With a comparison on a few of rate estimation algorithms, an improved methods resided in the decoder is proposed in this paper.
研究发现，基于空域运动补偿小波视频编码的相关帧丢帧补偿机制可以在很大程度上降低码率，提高压缩比，改善图像在极低码率传输中的质量。
Our study finds out that the compensatory system of relevant frame throwing frame can enhance the rate of compression and improve the quality of image transmitted by the lowest code rate.
码率控制是恒定码率视频压缩编码系统的一个关键研究课题。
Bit-rate control is a key topic in the constant bit - rate video compression coding system.
视频转码器可以满足上述需求，将一种压缩格式的视频码流转换为另一种压缩格式，如不同码率、不同分辨率、不同语法格式等。
A video transcoder is a device that converts video from one compressed format into another compressed format with different bitrate, resolution or syntax.
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