基于FGS编码视频的P2P流媒体及应用

P2P Media Streaming Summary and Application Based on FGS

研究了将FGS编码技术与P2P流媒体的最佳结合。FGS将信源编码成基本层和增强层;通过增强层的伸缩性来增强基本层信息,其可伸缩性体现在可以根据传输带宽传输任意长度的编码流,而接收端解码器则能做到收多少就解码多少。被裁减的比特数只影响显示质量,对解码器无其他影响,传输流的比特数越多,则视频显示质量越好。从而可以极大地提高每个用户所接受的视频质量,并通过列举,更好地阐述了如何解决目前网络中的异步和异构。

This paper studies will FGS coding technology and P2P streaming media best combination. FGS will be a.basie source cod- ing layer and enhancement layer. Strengthens the basic layer information through the enhancement layer. Its expandable manifests in may act according to the transmission band width transmission random length the code class, but the receiving end decoder can achieve receives how many to decode how many, bit several which reduces is affected the demonstration quality, does not have other influences to the decoder, a transmission class bit number are more, then the video frequency demonstration quality is better. Thus each user can be greatly enhanced by the acceptance of video quality, at last, through exemplification, we describe a better method to solve the asynchronism and heterogeneity.