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avcodec/mpeg12dec: Do not choke on extra m704 alpha data

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Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2016-05-01 01:25:20 +02:00
parent a67816bcce
commit 390703fcf5
1 changed files with 4 additions and 0 deletions
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4
libavcodec/mpeg12dec.c
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@ -1896,6 +1896,10 @@ static int mpeg_decode_slice(MpegEncContext *s, int mb_y,
av_log(avctx, AV_LOG_DEBUG, "Invalid MXF data found in video stream\n"); av_log(avctx, AV_LOG_DEBUG, "Invalid MXF data found in video stream\n");
is_d10 = 1; is_d10 = 1;
} }
if (left > 32 && show_bits_long(&gb, 32) == 0x201) {
av_log(avctx, AV_LOG_DEBUG, "skipping m704 alpha (unsupported)\n");
goto eos;
}
} }
if (left < 0 || if (left < 0 ||