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请问如何在capture link 中虚拟出一帧数据?



 DM8168 , DVRRDK 4.0

 

 请问如何在capture link 中虚拟出一帧数据?

 当capture 的前端摄像头拔出的时候,capture link 不能采集到数据,不会再向下一个 link 推送数据了;

 我现在想实现,当检测到前端视频解码芯片没有接入视频的视频,hdvpss中可以虚拟出一帧数据?

 

 请问应当如何来实现 ?  谢谢!