---
libavcodec/vc1dec.c | 14 ++++++++++----
1 file changed, 10 insertions(+), 4 deletions(-)
diff --git a/libavcodec/vc1dec.c b/libavcodec/vc1dec.c
index a9043a5..58e106a 100644
--- a/libavcodec/vc1dec.c
+++ b/libavcodec/vc1dec.c
@@ -1458,10 +1458,16 @@ static inline void vc1_pred_mv(VC1Context *v, int n,
int dmv_x, int dmv_y,
}
if (v->field_mode) {
- if (num_samefield <= num_oppfield)
- opposite = 1 - pred_flag;
- else
- opposite = pred_flag;
+ if (!v->numref)
+ // REFFIELD determines if the last field or the second-last field
is
+ // to be used as reference
+ opposite = 1 - v->reffield;
+ else {
+ if (num_samefield <= num_oppfield)
+ opposite = 1 - pred_flag;
+ else
+ opposite = pred_flag;
+ }
} else
opposite = 0;
if (opposite) {
--
1.7.9.5
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