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DM8148采集显示延时问题



在自行开发的DM8148系统板上,采用DVRRDK4.0开发包,运行最简单的视频采集-显示链路,打印统计信息:

[M3VPSS] 34361:DISPLAY: SDDAC(SEC1):24fps,Latency(Min/Max)=(123/159),Callback Interval(min/max)=(40/40) ......

[M3VPSS] 34362:DISPLAY DRV: SDDAC(SEC1):Q:[618],Display:[617],Repeat:[1],DQ:[615]

请问,Latency是表示从采集到1帧视频到显示的延时时间吗?如何可以减小该时间?能否减少到40内?