From 138581c41a129bdc86b97230d63dfc7fc98271a4 Mon Sep 17 00:00:00 2001
From: "Ronald S. Bultje" <rsbultje@gmail.com>
Date: Mon, 1 Jun 2015 11:17:44 -0400
Subject: vp9: clamp final zero MV if find_ref_mvs() found no suitable
 candidates.

This may actually result in a non-zero MV. Fixes ticket 4583.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
---
 libavcodec/vp9.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libavcodec/vp9.c b/libavcodec/vp9.c
index 93b3c96e23..c4efd42baf 100644
--- a/libavcodec/vp9.c
+++ b/libavcodec/vp9.c
@@ -1273,6 +1273,7 @@ static void find_ref_mvs(VP9Context *s,
     }
 
     AV_ZERO32(pmv);
+    clamp_mv(pmv, pmv, s);
 #undef INVALID_MV
 #undef RETURN_MV
 #undef RETURN_SCALE_MV
-- 
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