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| author | Andreas Rheinhardt <andreas.rheinhardt@gmail.com> | 2019-09-04 00:50:11 +0200 |
|---|---|---|
| committer | Andreas Rheinhardt <andreas.rheinhardt@gmail.com> | 2020-07-01 21:32:56 +0200 |
| commit | 13437c338e66fb864c85efa81b7dbc08e66cf90a (patch) | |
| tree | 04c9ae501afe075d3142d82607285427832c38a4 | |
| parent | 2b2358f595523ab916d1e437d52e01f463afcc00 (diff) | |
| download | ffmpeg-13437c338e66fb864c85efa81b7dbc08e66cf90a.tar.gz | |
avformat/matroskadec: Fix handling gigantic durations
matroska_parse_block currently asserts that the duration is not equal to
AV_NOPTS_VALUE, but there is nothing that actually guarantees this. It
is easy to create (spec-compliant) files which run into this assert;
so replace it and instead cap the duration to INT64_MAX, as the duration
field of an AVPacket is an int64_t.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
(cherry picked from commit 3714d452b894821591a2fbafdd1b8ef15abe4be6)
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
| -rw-r--r-- | libavformat/matroskadec.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/libavformat/matroskadec.c b/libavformat/matroskadec.c index 938ba2cdb2..4dc87fb7b7 100644 --- a/libavformat/matroskadec.c +++ b/libavformat/matroskadec.c @@ -3575,7 +3575,8 @@ static int matroska_parse_block(MatroskaDemuxContext *matroska, AVBufferRef *buf if (st->discard >= AVDISCARD_ALL) return res; - av_assert1(block_duration != AV_NOPTS_VALUE); + if (block_duration > INT64_MAX) + block_duration = INT64_MAX; block_time = sign_extend(AV_RB16(data), 16); data += 2; |