avfilter/avf_showspectrum: set hop_size for showspectrumpic

Fixes invalid spikes in video output.
2 years ago · 3e288dbf56
parent 459527108a
commit 3e288dbf56
1 changed files with 1 additions and 0 deletions
--- a/libavfilter/avf_showspectrum.c
+++ b/libavfilter/avf_showspectrum.c
@ -1770,6 +1770,7 @@ static int showspectrumpic_request_frame(AVFilterLink *outlink)

        spf = s->win_size * (s->samples / ((s->win_size * sz) * ceil(s->samples / (float)(s->win_size * sz))));
        spf = FFMAX(1, spf);
+        s->hop_size = spf;

        spb = (s->samples / (spf * sz)) * spf;