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-rw-r--r--libavfilter/avf_ahistogram.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libavfilter/avf_ahistogram.c b/libavfilter/avf_ahistogram.c
index a716a96f2d..ff94ad47df 100644
--- a/libavfilter/avf_ahistogram.c
+++ b/libavfilter/avf_ahistogram.c
@@ -165,7 +165,7 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
const int H = s->histogram_h;
const int w = s->w;
int c, y, n, p, bin;
- uint64_t acmax = 0;
+ uint64_t acmax = 1;
if (!s->out || s->out->width != outlink->w ||
s->out->height != outlink->h) {