diff --git a/doc/APIchanges b/doc/APIchanges
index aadf164254..eccfb70899 100644
--- a/doc/APIchanges
+++ b/doc/APIchanges
@@ -15,6 +15,9 @@ libavutil:     2015-08-28
 
 API changes, most recent first:
 
+2017-03-21 - xxxxxxx - lavf 57.67.100 / 57.08.0 - avio.h
+  Add AVIO_SEEKABLE_TIME flag.
+
 2017-03-21 - xxxxxxx - lavf 57.66.105, lavc 57.83.101 - avformat.h, avcodec.h
   Deprecate AVFMT_FLAG_KEEP_SIDE_DATA. It will be ignored after the next major
   bump, and libavformat will behave as if it were always set.
diff --git a/libavformat/avio.h b/libavformat/avio.h
index cec7fd74d9..6f4ed8440d 100644
--- a/libavformat/avio.h
+++ b/libavformat/avio.h
@@ -39,6 +39,11 @@
  */
 #define AVIO_SEEKABLE_NORMAL (1 << 0)
 
+/**
+ * Seeking by timestamp with avio_seek_time() is possible.
+ */
+#define AVIO_SEEKABLE_TIME   (1 << 1)
+
 /**
  * Callback for checking whether to abort blocking functions.
  * AVERROR_EXIT is returned in this case by the interrupted
diff --git a/libavformat/aviobuf.c b/libavformat/aviobuf.c
index 5f58ab064b..ef6a0d4e9b 100644
--- a/libavformat/aviobuf.c
+++ b/libavformat/aviobuf.c
@@ -934,6 +934,9 @@ int ffio_fdopen(AVIOContext **s, URLContext *h)
     if(h->prot) {
         (*s)->read_pause = io_read_pause;
         (*s)->read_seek  = io_read_seek;
+
+        if (h->prot->url_read_seek)
+            (*s)->seekable |= AVIO_SEEKABLE_TIME;
     }
     (*s)->short_seek_get = io_short_seek;
     (*s)->av_class = &ff_avio_class;
diff --git a/libavformat/version.h b/libavformat/version.h
index bfc42e3f15..dd4c680803 100644
--- a/libavformat/version.h
+++ b/libavformat/version.h
@@ -32,8 +32,8 @@
 // Major bumping may affect Ticket5467, 5421, 5451(compatibility with Chromium)
 // Also please add any ticket numbers that you believe might be affected here
 #define LIBAVFORMAT_VERSION_MAJOR  57
-#define LIBAVFORMAT_VERSION_MINOR  66
-#define LIBAVFORMAT_VERSION_MICRO 105
+#define LIBAVFORMAT_VERSION_MINOR  67
+#define LIBAVFORMAT_VERSION_MICRO 100
 
 #define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
                                                LIBAVFORMAT_VERSION_MINOR, \