Fixes: CID1403227 Division or modulo by float zero

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
---
 libavfilter/signature_lookup.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libavfilter/signature_lookup.c b/libavfilter/signature_lookup.c
index ab7320d47f4..a3086b38cca 100644
--- a/libavfilter/signature_lookup.c
+++ b/libavfilter/signature_lookup.c
@@ -496,10 +496,10 @@ static MatchingInfo evaluate_parameters(AVFilterContext 
*ctx, SignatureContext *
             continue; /* matching sequence is too short */
         if ((double) goodfcount / (double) fcount < sc->thit)
             continue;
-        if ((double) goodfcount*0.5 < FFMAX(gooda, goodb))
+        if ((double) goodfcount*0.5 <= FFMAX(gooda, goodb))
             continue;
 
-        meandist = (double) goodfcount / (double) distsum;
+        meandist = (double) distsum / (double) goodfcount;
 
         if (meandist < minmeandist ||
                 status == (STATUS_END_REACHED | STATUS_BEGIN_REACHED) ||
-- 
2.25.1

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