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-rw-r--r--libavcodec/vc1.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/libavcodec/vc1.c b/libavcodec/vc1.c
index b04d570602..c7edc25a25 100644
--- a/libavcodec/vc1.c
+++ b/libavcodec/vc1.c
@@ -1223,6 +1223,11 @@ int ff_vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
break;
}
+ if (v->fcm != PROGRESSIVE && !v->s.quarter_sample) {
+ v->range_x <<= 1;
+ v->range_y <<= 1;
+ }
+
/* AC Syntax */
v->c_ac_table_index = decode012(gb);
if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI) {