diff --git a/generic-pc/playback.h b/generic-pc/playback.h
index aad792a..bfe9f9c 100644
--- a/generic-pc/playback.h
+++ b/generic-pc/playback.h
@@ -10,6 +10,7 @@ typedef enum {
 	PLAYMODE_FILE,
 } playmode_t; 
 
+struct AVFormatContext;
 class cPlayback
 {
 	private:
@@ -26,6 +27,7 @@ class cPlayback
 		bool SetSubtitlePid(int pid);
 		bool SetTeletextPid(int pid);
 		int GetAPid(void) { return mAudioStream; }
+		int GetVPid(void);
 		int GetSubtitlePid(void) { return mSubtitleStream; }
 		int GetTeletextPid(void);
 		void SuspendSubtitle(bool);
@@ -49,6 +51,7 @@ class cPlayback
 		void GetMetadata(std::vector<std::string> &keys, std::vector<std::string> &values);
 		//
 		~cPlayback();
+		AVFormatContext *GetAVFormatContext(){ return NULL; }
+		void ReleaseAVFormatContext() {}
 };
-
 #endif
diff --git a/libeplayer3/Makefile.am b/libeplayer3/Makefile.am
index a0da644..e261e68 100644
--- a/libeplayer3/Makefile.am
+++ b/libeplayer3/Makefile.am
@@ -1,3 +1,5 @@
+AUTOMAKE_OPTIONS = subdir-objects
+
 noinst_LTLIBRARIES = libeplayer3.la
 
 AUTOMAKE_OPTIONS = subdir-objects
diff --git a/libeplayer3/writer/h264.cpp b/libeplayer3/writer/h264.cpp
index ebf1825..639a083 100644
--- a/libeplayer3/writer/h264.cpp
+++ b/libeplayer3/writer/h264.cpp
@@ -4,8 +4,6 @@
  * Copyright (C) 2010  konfetti (based on code from libeplayer2)
  * Copyright (C) 2014  martii   (based on code from libeplayer3)
  *
- * Copyright (C) 2014  martii
- *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * as published by the Free Software Foundation; either version 2
diff --git a/libeplayer3/writer/vc1.cpp b/libeplayer3/writer/vc1.cpp
index b0fd743..94d845d 100644
--- a/libeplayer3/writer/vc1.cpp
+++ b/libeplayer3/writer/vc1.cpp
@@ -4,8 +4,6 @@
  * Copyright (C) 2010  konfetti (based on code from libeplayer2)
  * Copyright (C) 2014  martii   (based on code from libeplayer3)
  *
- * Copyright (C) 2014  martii
- *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * as published by the Free Software Foundation; either version 2
diff --git a/libeplayer3/writer/wmv.cpp b/libeplayer3/writer/wmv.cpp
index 22dea64..c20a0d6 100644
--- a/libeplayer3/writer/wmv.cpp
+++ b/libeplayer3/writer/wmv.cpp
@@ -4,8 +4,6 @@
  * Copyright (C) 2010  konfetti (based on code from libeplayer2)
  * Copyright (C) 2014  martii   (based on code from libeplayer3)
  *
- * Copyright (C) 2014  martii
- *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * as published by the Free Software Foundation; either version 2