From dc71f1958846bb1d96de43a4603983dc8450cfcc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bernhard=20=C3=9Cbelacker?= <bernhardu@vr-web.de>
Date: Sun, 27 Jul 2014 08:38:59 -0700
Subject: [PATCH] video4linux2: Avoid a floating point exception
This avoids a segfault in avconv_opt.c:opt_target when trying to
determine the norm.
---
avconv_opt.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/avconv_opt.c b/avconv_opt.c
index f8c524568ce..434ba0b2e7e 100644
--- a/avconv_opt.c
+++ b/avconv_opt.c
@@ -1757,7 +1757,8 @@ static int opt_target(void *optctx, const char *opt, const char *arg)
for (j = 0; j < nb_input_files; j++) {
for (i = 0; i < input_files[j]->nb_streams; i++) {
AVCodecContext *c = input_files[j]->ctx->streams[i]->codec;
- if (c->codec_type != AVMEDIA_TYPE_VIDEO)
+ if (c->codec_type != AVMEDIA_TYPE_VIDEO ||
+ !c->time_base.num)
continue;
fr = c->time_base.den * 1000 / c->time_base.num;
if (fr == 25000) {
--
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