摘要： 码流控制是网络多媒体服务中需要解决的主要问题之一。该文依据码流控制的主要影响因素——网络带宽,提出了一种基于网络带宽自适应的缓冲技术方案,先在接收端实时探测网络带宽反馈给网络服务发送端,按照网络带宽选择编码不同的数据分层,并进行了缓冲处理,然后输出传送码流,使得网络服务在适应网络不同带宽需求上具有灵活性。实验表明,使用该文带宽自适应缓冲技术方案,提高了预编码的MPEG视频流的传输质量。

关键词: 码流转换, QoS, 缓冲区, 带宽自适应

Abstract: Stream control is one of the most important problems with multimedia service on network. As network bandwidth is a critical factor of stream control, a bandwidth-adaptive buffer scheme is proposed to smooth stream control. According to the detection bandwidth in real time from the receiver, the sender chooses the different modes of delamination coding, smoothes the stream and transmits it to the receiver. This scheme is flexible to adapt various bandwidth networks. Experiments show that the service quality of MPEG stream is improved efficiently.

中图分类号: 

• TN919.8