avfilter/avf_showspectrum: avoid overwritting text

Signed-off-by: Paul B Mahol <onemda@gmail.com>
7 years ago · 9add1786ad
parent d0bf1aa3c5
commit 9add1786ad
1 changed files with 1 additions and 1 deletions
--- a/libavfilter/avf_showspectrum.c
+++ b/libavfilter/avf_showspectrum.c
@ -1190,7 +1190,7 @@ static int showspectrumpic_request_frame(AVFilterLink *outlink)
                    for (x = 0; x < w; x+=80) {
                        dst[x] = 200;
                    }
-                    for (x = 0; x < w; x += 80) {
+                    for (x = 0; x < w - 79; x += 80) {
                        float hertz = x * (inlink->sample_rate / 2) / (float)(1 << (int)ceil(log2(w)));
                        char *units;