From 3714d452b894821591a2fbafdd1b8ef15abe4be6 Mon Sep 17 00:00:00 2001 From: Andreas Rheinhardt Date: Wed, 4 Sep 2019 00:50:11 +0200 Subject: [PATCH] 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 --- 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;