FILTER3           325 libavfilter/vf_signalstats.c                 filt = FILTER3(2) && FILTER3(1);
FILTER3           332 libavfilter/vf_signalstats.c                 filt = FILTER3(1);
FILTER3           366 libavfilter/vf_signalstats.c                 filt = FILTER3(2) && FILTER3(1);
FILTER3           373 libavfilter/vf_signalstats.c                 filt = FILTER3(1);