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-rw-r--r--libavformat/utils.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libavformat/utils.c b/libavformat/utils.c
index b7506dea98..ee7de674f3 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -2884,7 +2884,7 @@ int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
// ipmovie.c produces.
if (tb_unreliable(st->codec) && st->info->duration_count > 15 && st->info->duration_gcd > FFMAX(1, st->time_base.den/(500LL*st->time_base.num)) && !st->r_frame_rate.num)
av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, st->time_base.den, st->time_base.num * st->info->duration_gcd, INT_MAX);
- if (st->info->duration_count && !st->r_frame_rate.num
+ if (st->info->duration_count>1 && !st->r_frame_rate.num
&& tb_unreliable(st->codec)) {
int num = 0;
double best_error= 0.01;