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movsub_bsf: Fix mov2textsub regression

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The mov flavour of timed text uses the first two bytes of the packet as
a length field. And up until 11bef2fe said length field has been read
correctly in the mov2textsub bsf. But since then the next two bytes are
read as if they were the length field. This is fixed in this commit.

Reviewed-by: Philip Langdale <philipl@overt.org>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
(cherry picked from commit 800f618a34)
This commit is contained in:
Andreas Rheinhardt 2019-06-23 06:46:12 +02:00 committed by James Almer
parent 72f03b2af4
commit b5229a0b3e
1 changed files with 1 additions and 1 deletions
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2
libavcodec/movsub_bsf.c
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@ -75,8 +75,8 @@ static int mov2textsub(AVBSFContext *ctx, AVPacket *pkt)
return AVERROR_INVALIDDATA;
}
pkt->data += 2;
pkt->size = FFMIN(pkt->size - 2, AV_RB16(pkt->data));
pkt->data += 2;
return 0;
}