1 files changed, 4 insertions, 0 deletions
diff --git a/src/libffmpeg/libavcodec/mpegvideo.c b/src/libffmpeg/libavcodec/mpegvideo.c
index f49b1c2b5..31535c263 100644
--- a/src/libffmpeg/libavcodec/mpegvideo.c
+++ b/src/libffmpeg/libavcodec/mpegvideo.c
@@ -1684,6 +1684,10 @@ static inline void qpel_motion(MpegEncContext *s,
     if(field_based){
         mx= motion_x/2;
         my= motion_y>>1;
+    }else if(s->workaround_bugs&FF_BUG_QPEL_CHROMA2){
+        static const int rtab[8]= {0,0,1,1,0,0,0,1};
+        mx= (motion_x>>1) + rtab[motion_x&7];
+        my= (motion_y>>1) + rtab[motion_y&7];
     }else if(s->workaround_bugs&FF_BUG_QPEL_CHROMA){
         mx= (motion_x>>1)|(motion_x&1);
         my= (motion_y>>1)|(motion_y&1);