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DM8168 DVRRDK 4.0,NSF什么情况会导致m3 core down?

我用DM8168 CCYG2,DVRRDK 04.00.00.03,之前NSF一直没问题,最近修改LINK,简单描述如下:

swms(1080P30 output yuv422)--------->|            |       

                                                                       |merge|---->DUP-------->NSF------>(H.264编码那些LInk)

select(1080P30 output yuv422 1ch)--->|            |                                |---------->Merge。。。后面是显示的Link

但是NSF创建时会出现slave core m3 vpss down一类的提示。

因为牵扯太多,就想问,NSF一个Link ID,2路1080P30 YUV422输入,2路 1080P30 YUV420输出,这种是否可行?