From 52767d891c665ab1124fe4ce82d99b59673de7d2 Mon Sep 17 00:00:00 2001 From: Mans Rullgard Date: Tue, 15 Nov 2011 22:33:49 +0000 Subject: [PATCH] lavf: fix multiplication overflow in avformat_find_stream_info() Converting to double before the multiplication rather than after avoids an integer overflow in some cases. Signed-off-by: Mans Rullgard --- libavformat/utils.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavformat/utils.c b/libavformat/utils.c index 2dc7623dff..11cb4f8b8e 100644 --- a/libavformat/utils.c +++ b/libavformat/utils.c @@ -2409,7 +2409,7 @@ int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options) for (i=1; iinfo->duration_error); i++) { int framerate= get_std_framerate(i); int ticks= lrintf(dur*framerate/(1001*12)); - double error= dur - ticks*1001*12/(double)framerate; + double error = dur - (double)ticks*1001*12 / framerate; st->info->duration_error[i] += error*error; } st->info->duration_count++;