本文在速率失真函数的基础上，提出了适合精细可分级编码视频流的最优的速率分配方法。

An optimal rate allocation method for fine granularity scalable video streaming based on rate-distortion function was presented.

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提出了一个基于MPEG 4精细可分级编码技术的视频流式传输系统。

A video streaming system based on MPEG4 fine granularity scalability (FGS) is presented.

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首先，详细介绍了它支持的时域、空域、SNR粗粒度可分级(CGS)和SNR精细粒度可分级(FGS)编码的原理和实现；最后，对视频可分级编码技术的应用前景进行了总结。

Firstly, the principle and implementation of temporal Scalability, spatial Scalability, SNR Coarse-grain Scalability (CGS) and SNR Fine-grain Scalability (FGS) Video Coding are introduced in detail.

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首先，详细介绍了它支持的时域、空域、SNR粗粒度可分级(CGS)和SNR精细粒度可分级(FGS)编码的原理和实现；最后，对视频可分级编码技术的应用前景进行了总结。

Firstly, the principle and implementation of temporal Scalability, spatial Scalability, SNR Coarse-grain Scalability (CGS) and SNR Fine-grain Scalability (FGS) Video Coding are introduced in detail.

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