diff --git a/libavformat/dv.c b/libavformat/dv.c
index 7a1f5a48a9..58a70b023c 100644
--- a/libavformat/dv.c
+++ b/libavformat/dv.c
@@ -921,7 +921,7 @@ static AVInputFormat dv_iformat = {
     dv_read_packet,
     dv_read_close,
     dv_read_seek,
-    .extensions = "dv",
+    .extensions = "dv,dif",
 };
 
 static AVOutputFormat dv_oformat = {