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.rheinha...@gmail.com>
---
libavformat/matroskadec.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/libavformat/matroskadec.c b/libavformat/matroskadec.c
index b1da40983f..1846b1f93c 100644
--- a/libavformat/matroskadec.c
+++ b/libavformat/matroskadec.c
@@ -3568,7 +3568,8 @@ 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;
--
2.20.1
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