diff -ur a/libavformat/avformat.h b/libavformat/avformat.h
---- a/libavformat/avformat.h 2017-06-06 20:03:55.000000000 -0600
-+++ b/libavformat/avformat.h 2017-07-20 09:10:40.434571231 -0600
+--- a/libavformat/avformat.h 2017-12-10 14:35:10.000000000 -0700
++++ b/libavformat/avformat.h 2017-12-18 11:11:31.791996302 -0700
@@ -504,6 +504,9 @@
The user or muxer can override this through
AVFormatContext.avoid_negative_ts
int flags;
diff -ur a/libavformat/dv.c b/libavformat/dv.c
---- a/libavformat/dv.c 2017-06-06 20:03:55.000000000 -0600
-+++ b/libavformat/dv.c 2017-07-20 09:12:00.277148325 -0600
+--- a/libavformat/dv.c 2017-12-10 14:35:10.000000000 -0700
++++ b/libavformat/dv.c 2017-12-18 11:11:31.792996246 -0700
@@ -632,6 +632,7 @@
AVInputFormat ff_dv_demuxer = {
.name = "dv",
.read_probe = dv_probe,
.read_header = dv_read_header,
diff -ur a/libavformat/matroskadec.c b/libavformat/matroskadec.c
---- a/libavformat/matroskadec.c 2017-06-06 20:03:55.000000000 -0600
-+++ b/libavformat/matroskadec.c 2017-07-20 12:29:39.804273095 -0600
-@@ -3936,6 +3936,7 @@
+--- a/libavformat/matroskadec.c 2017-12-10 14:35:10.000000000 -0700
++++ b/libavformat/matroskadec.c 2017-12-18 11:11:31.793996189 -0700
+@@ -3984,6 +3984,7 @@
AVInputFormat ff_matroska_demuxer = {
.name = "matroska,webm",
.long_name = NULL_IF_CONFIG_SMALL("Matroska / WebM"),
.extensions = "mkv,mk3d,mka,mks",
.priv_data_size = sizeof(MatroskaDemuxContext),
.read_probe = matroska_probe,
-@@ -3949,6 +3950,7 @@
+@@ -3997,6 +3998,7 @@
AVInputFormat ff_webm_dash_manifest_demuxer = {
.name = "webm_dash_manifest",
.long_name = NULL_IF_CONFIG_SMALL("WebM DASH Manifest"),
.priv_data_size = sizeof(MatroskaDemuxContext),
.read_header = webm_dash_manifest_read_header,
.read_packet = webm_dash_manifest_read_packet,
-diff -ur a/libavformat/utils.c b/libavformat/utils.c
---- a/libavformat/utils.c 2017-06-06 20:04:02.000000000 -0600
-+++ b/libavformat/utils.c 2017-07-20 09:53:28.684729516 -0600
-@@ -2412,6 +2412,13 @@
+diff -ur a/libavformat/utils.c ./libavformat/utils.c
+--- a/libavformat/utils.c 2017-12-10 14:35:18.000000000 -0700
++++ b/libavformat/utils.c 2017-12-18 11:11:31.795996077 -0700
+@@ -2416,6 +2416,13 @@
return seek_frame_byte(s, stream_index, timestamp, flags);
}