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avcodec/vc1: FIELDTX is only present in interlaced frame I/BI pictures

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If v->fieldtx_is_raw is not reset to zero, it may spill over from a previous
interlaced frame I/BI picture.

Signed-off-by: Jerome Borsboom <jerome.borsboom@carpalis.nl>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Jerome Borsboom 2018-05-20 13:45:56 +02:00 committed by Michael Niedermayer
parent cadf7a7f39
commit fac5849915
1 changed files with 2 additions and 1 deletions
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3
libavcodec/vc1.c
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@ -1010,7 +1010,8 @@ int ff_vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
return -1;
av_log(v->s.avctx, AV_LOG_DEBUG, "FIELDTX plane encoding: "
"Imode: %i, Invert: %i\n", status>>1, status&1);
}
} else
v->fieldtx_is_raw = 0;
status = bitplane_decoding(v->acpred_plane, &v->acpred_is_raw, v);
if (status < 0)
return -1;