diff --git a/libeplayer3/include/input.h b/libeplayer3/include/input.h
index 7343dde..9fef39c 100644
--- a/libeplayer3/include/input.h
+++ b/libeplayer3/include/input.h
@@ -61,6 +61,8 @@ class Input
 		Player *player;
 		AVFormatContext *avfc;
 		uint64_t readCount;
+		int64_t calcPts(AVStream * stream, int64_t pts);
+
 	public:
 		Input();
 		~Input();