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vc1: Reset numref if fieldmode is not set 

There are samples in the wild with B-frames and P-frames with different
interlace mode.

CC: libav-stable@libav.org
Reported-by: Jean-Baptiste Kempf <jb@videolan.org>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
This commit is contained in:
Kostya Shishkov 2013-11-25 14:04:41 +01:00 committed by Luca Barbato
parent 5145ccf02b
commit de44dfc7c0
1 changed files with 2 additions and 0 deletions
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2
libavcodec/vc1.c
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@ -1005,6 +1005,8 @@ int ff_vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
v->reffield = get_bits1(gb);
v->ref_field_type[0] = v->reffield ^ !v->cur_field_type;
}
} else {
v->numref = 0;
}
if (v->extended_mv)
v->mvrange = get_unary(gb, 0, 3);