Use av_guess_frame_rate rather than av_stream_get_r_frame_rate;

helps with #1030.  I hope this isn't a bad idea; this commit
should be reverted if there any hints of misread video frame rates.

1 files changed, 3 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 9cbc2b58d..ee13dcf41 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,8 @@
 2018-02-10  Carl Hetherington  <cth@carlh.net>
 
+	* Use a different way of getting frame rate from video content; may
+	fix #1030.
+
 	* Version 2.11.53 released.
 
 2018-02-09  Carl Hetherington  <cth@carlh.net>