From 390703fcf5cdd54e728f97499a0747a941330d45 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sun, 1 May 2016 01:25:20 +0200 Subject: [PATCH] avcodec/mpeg12dec: Do not choke on extra m704 alpha data Signed-off-by: Michael Niedermayer --- libavcodec/mpeg12dec.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/libavcodec/mpeg12dec.c b/libavcodec/mpeg12dec.c index f6089e4eb4..4c96a1a01c 100644 --- a/libavcodec/mpeg12dec.c +++ b/libavcodec/mpeg12dec.c @@ -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"); 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 ||