From 1a266a1ef91d0329936ab75389102017cb48f45f Mon Sep 17 00:00:00 2001
From: Paul B Mahol <onemda@gmail.com>
Date: Sun, 2 Jun 2019 12:58:07 +0200
Subject: avfilter/af_anlmdn: try to recover when cache becomes negative

---
 libavfilter/af_anlmdn.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'libavfilter')

diff --git a/libavfilter/af_anlmdn.c b/libavfilter/af_anlmdn.c
index 06e9736cc2..5c881f6fd2 100644
--- a/libavfilter/af_anlmdn.c
+++ b/libavfilter/af_anlmdn.c
@@ -224,7 +224,10 @@ static int filter_channel(AVFilterContext *ctx, void *arg, int ch, int nb_jobs)
             unsigned weight_lut_idx;
             float w;
 
-            av_assert2(distance >= 0.f);
+            if (distance < 0.f) {
+                cache[j] = 0.f;
+                continue;
+            }
             w = distance * sw;
             if (w >= smooth)
                 continue;
-- 
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