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基于主动抛弃的MPEG―2TS流速率控制算法

DOI: 10.11834/jig.20020394

Keywords: MPEG-2,TS流,速率控制,视频压缩,图像处理,图像编码,IP网络,网络传输

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Abstract:

在网络传输能力不足以实时传输MPEG-2码流时,接收端的图象恢复质量会因为在网络传送中不可避免的、随机的数据丢失而严重下降,为了解决这一问题,提出了一种基于主动抛弃的MPEG-2TS流速率控制算法,即在原始码流输送到网络前,根据预测的网络传输阻塞状况,预先主动抛弃部分不太重要的数据,从而使实际输出码率与可用网络带宽匹配,以保护重要数据和改善接收端的图象恢复质量,并提高网络带宽的利用率,经实验测试证明,此算法简单、实用、有效、且接收端的图象恢复质量比任凭网络随机丢失的情况有明显改善。

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