[FFmpeg-devel] [PATCH 1/2] libavfilter/signature_lookup: fix possible division by zero

[Gerion Entrup]

---
 libavfilter/signature_lookup.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavfilter/signature_lookup.c b/libavfilter/signature_lookup.c
index a0ca818a9b..b39a3e225b 100644
--- a/libavfilter/signature_lookup.c
+++ b/libavfilter/signature_lookup.c
@@ -128,7 +128,7 @@ static int get_jaccarddist(SignatureContext *sc, CoarseSignature *first, CoarseS
     int jaccarddist, i, composdist = 0, cwthcount = 0;
     for (i = 0; i < 5; i++) {
         if ((jaccarddist = intersection_word(first->data[i], second->data[i])) > 0) {
-            jaccarddist /= union_word(first->data[i], second->data[i]);
+            jaccarddist /= FFMAX(union_word(first->data[i], second->data[i]), 1);
         }
         if (jaccarddist >= sc->thworddist) {
             if (++cwthcount > 2) {
-- 
2.43.2