From 9214855006ab4f016498d1998a6d78130e1d008a Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Sun, 12 Jan 2003 12:16:36 +0000
Subject: [PATCH] average motion vector rounding like the reference says and
 not what the standard says

Originally committed as revision 1453 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavcodec/h263.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/libavcodec/h263.c b/libavcodec/h263.c
index bc21e0cd86..64b2e18bda 100644
--- a/libavcodec/h263.c
+++ b/libavcodec/h263.c
@@ -2654,8 +2654,7 @@ static inline int get_amv(MpegEncContext *s, int n){
                 v+= dx;
             }
         }
-        sum /= 256;
-        sum= RSHIFT(sum<<s->quarter_sample, a);
+        sum= RSHIFT(sum, a+8-s->quarter_sample);
     }
 
     if      (sum < -len) sum= -len;