sws_printVec2    2881 libswscale/swscale.c     if (verbose) sws_printVec2(filter->chrH, NULL, AV_LOG_DEBUG);
sws_printVec2    2882 libswscale/swscale.c     if (verbose) sws_printVec2(filter->lumH, NULL, AV_LOG_DEBUG);
sws_printVec2    3094 libswscale/swscale.c     sws_printVec2(a, NULL, AV_LOG_DEBUG);