From 11d058b7b351db8fb73104c847c5cc43b91735c6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Reimar=20D=C3=B6ffinger?= <Reimar.Doeffinger@gmx.de>
Date: Fri, 3 Jul 2009 11:31:09 +0000
Subject: [PATCH] Replace invalid Theora frame rate by 25 FPS. Avoids division
by 0 due to e.g. time_base denominator being 0.
Originally committed as revision 19334 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
libavformat/oggparsetheora.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/libavformat/oggparsetheora.c b/libavformat/oggparsetheora.c
index e62f288a7d2..0d74116d178 100644
--- a/libavformat/oggparsetheora.c
+++ b/libavformat/oggparsetheora.c
@@ -86,6 +86,11 @@ theora_header (AVFormatContext * s, int idx)
}
st->codec->time_base.den = get_bits_long(&gb, 32);
st->codec->time_base.num = get_bits_long(&gb, 32);
+ if (!(st->codec->time_base.num > 0 && st->codec->time_base.den > 0)) {
+ av_log(s, AV_LOG_WARNING, "Invalid time base in theora stream, assuming 25 FPS\n");
+ st->codec->time_base.num = 1;
+ st->codec->time_base.den = 25;
+ }
st->time_base = st->codec->time_base;
st->sample_aspect_ratio.num = get_bits_long(&gb, 24);
--
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