NB_SLIDES          33 libavfilter/avf_ahistogram.c enum SlideMode      { REPLACE, SCROLL, NB_SLIDES };
NB_SLIDES          51 libavfilter/avf_showspectrum.c enum SlideMode    { REPLACE, SCROLL, FULLFRAME, RSCROLL, NB_SLIDES };
NB_SLIDES          41 libavfilter/vaf_spectrumsynth.c enum SlideMode      { REPLACE, SCROLL, FULLFRAME, RSCROLL, NB_SLIDES };