X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fvc1_pred.c;h=f70956e7392952b7161d059f564dbc305dbd91e3;hb=e5bcda6473a2d6984216004506374669501fcf3b;hp=9e29b44a1f0a891844263e18061a1e6cf42a728d;hpb=1811b7d1f5330e04a48b1d6425cf1ef6ed776ed1;p=ffmpeg

diff --git a/libavcodec/vc1_pred.c b/libavcodec/vc1_pred.c
index 9e29b44a1f0..f70956e7392 100644
--- a/libavcodec/vc1_pred.c
+++ b/libavcodec/vc1_pred.c
@@ -178,7 +178,7 @@ static av_always_inline int scaleforsame(VC1Context *v, int i, int n /* MV */,
     brfd      = FFMIN(v->brfd, 3);
     scalesame = ff_vc1_b_field_mvpred_scales[0][brfd];
 
-    n = (n * scalesame >> 8) << hpel;
+    n = (n * scalesame >> 8) * (1 << hpel);
     return n;
 }
 
@@ -191,15 +191,16 @@ static av_always_inline int scaleforopp(VC1Context *v, int n /* MV */,
     n >>= hpel;
     if (v->s.pict_type == AV_PICTURE_TYPE_B && !v->second_field && dir == 1) {
         if (dim)
-            n = scaleforopp_y(v, n, dir) << hpel;
+            n = scaleforopp_y(v, n, dir) * (1 << hpel);
         else
-            n = scaleforopp_x(v, n) << hpel;
+            n = scaleforopp_x(v, n)      * (1 << hpel);
         return n;
     }
     if (v->s.pict_type != AV_PICTURE_TYPE_B)
-        refdist = FFMIN(v->refdist, 3);
+        refdist = v->refdist;
     else
         refdist = dir ? v->brfd : v->frfd;
+    refdist = FFMIN(refdist, 3);
     scaleopp = ff_vc1_field_mvpred_scales[dir ^ v->second_field][0][refdist];
 
     n = (n * scaleopp >> 8) * (1 << hpel);