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针对媒体云系统媒体资源采集过程中用户端带宽波动问题,提出一种x264编码器参数自适应调整方法。作者从权衡传输和编码时延关系入手,通过比对复杂度调整前后的总时延变化情况,确定后续复杂度调整方向,逐步减小总时延,进而实现包含编码时延和传输时延的总时延最小的目的。实验结果表明,该方法能够为处于不同网络环境下的编码器选取准确的最优参数组合,并且相比编码器初始配置平均减小了4%~14%左右的总时延。
In order to solve the problem of user-side bandwidth fluctuation in the process of collecting media resources in media cloud system, an adaptive adjustment method of x264 encoder parameters is proposed. The author starts with the trade-off between transmission and coding delay, compares the total delay before and after the complexity adjustment, determines the direction of the subsequent complexity adjustment, and gradually reduces the total delay, so as to achieve the coding delay and transmission delay The total delay of the smallest purpose. Experimental results show that this method can select the optimal combination of optimal parameters for encoders in different network environments and reduce the average delay of about 4% ~ 14% compared with the initial configuration of the encoder.