Module: libav
Branch: release/9
Commit: 17e7edf75b451edd7dde4816c3225fd1557517c7

Author:    Martin Storsjö <[email protected]>
Committer: Luca Barbato <[email protected]>
Date:      Fri Sep 20 12:20:06 2013 +0300

lavf: Avoid setting avg_frame_rate if delta_dts is negative

This avoids setting avg_frame_rate to invalid (negative)
values.

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: [email protected]
Signed-off-by: Martin Storsjö <[email protected]>
(cherry picked from commit ce67f442be0f6c4a8794272873852e256b5b8ee4)
Signed-off-by: Luca Barbato <[email protected]>

---

 libavformat/utils.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libavformat/utils.c b/libavformat/utils.c
index 4f73dfe..b0bfea2 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -2499,7 +2499,8 @@ int avformat_find_stream_info(AVFormatContext *ic, 
AVDictionary **options)
                 double best_error = 0.01;
 
                 if (delta_dts     >= INT64_MAX / st->time_base.num ||
-                    delta_packets >= INT64_MAX / st->time_base.den)
+                    delta_packets >= INT64_MAX / st->time_base.den ||
+                    delta_dts < 0)
                     continue;
                 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
                           delta_packets*(int64_t)st->time_base.den,

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