[FFmpeg-cvslog] avcodec/motion_est: Fix score squaring overflow

Michael Niedermayer git at videolan.org
Sat Jul 13 00:05:01 EEST 2024


ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Fri Jul  5 02:21:55 2024 +0200| [f18b442370d714b930e3e983c2e5d789229f3356] | committer: Michael Niedermayer

avcodec/motion_est: Fix score squaring overflow

Fixes: CID1604552 Overflowed constant

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=f18b442370d714b930e3e983c2e5d789229f3356
---

 libavcodec/motion_est.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/motion_est.c b/libavcodec/motion_est.c
index 554fc9780e..e4f17fb2d8 100644
--- a/libavcodec/motion_est.c
+++ b/libavcodec/motion_est.c
@@ -1454,7 +1454,7 @@ static inline int direct_search(MpegEncContext * s, int mb_x, int mb_y)
         s->b_direct_mv_table[mot_xy][0]= 0;
         s->b_direct_mv_table[mot_xy][1]= 0;
 
-        return 256*256*256*64;
+        return 256*256*256*64-1;
     }
 
     c->xmin= xmin;



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