SPECTOGRAM_HEIGHT   50 libavfilter/avf_showcqt.c #define SPECTOGRAM_START (VIDEO_HEIGHT-SPECTOGRAM_HEIGHT)
SPECTOGRAM_HEIGHT  336 libavfilter/avf_showcqt.c     int spectogram_height = (SPECTOGRAM_HEIGHT/2) * video_scale;
SPECTOGRAM_HEIGHT  539 libavfilter/avf_showcqt.c     int spectogram_height = (SPECTOGRAM_HEIGHT/2) * video_scale;