diff --git a/modules/mux/avi.c b/modules/mux/avi.c
index bb60e2238e..356870ee20 100644
--- a/modules/mux/avi.c
+++ b/modules/mux/avi.c
@@ -2,7 +2,7 @@
  * avi.c
  *****************************************************************************
  * Copyright (C) 2001, 2002 VideoLAN
- * $Id: avi.c,v 1.7 2003/02/24 12:34:29 fenrir Exp $
+ * $Id: avi.c,v 1.8 2003/02/24 14:14:43 fenrir Exp $
  *
  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
  *
@@ -65,7 +65,7 @@
 static int     Open   ( vlc_object_t * );
 static void    Close  ( vlc_object_t * );
 
-static int Capability( int , void *, void * );
+static int Capability(sout_instance_t *, int , void *, void * );
 static int AddStream( sout_instance_t *, sout_input_t * );
 static int DelStream( sout_instance_t *, sout_input_t * );
 static int Mux      ( sout_instance_t * );
@@ -238,7 +238,7 @@ static void Close( vlc_object_t * p_this )
     sout_AccessOutWrite( p_sout->p_access, p_hdr );
 }
 
-static int Capability( int i_query, void *p_args, void *p_answer )
+static int Capability( sout_instance_t *p_sout, int i_query, void *p_args, void *p_answer )
 {
    switch( i_query )
    {
diff --git a/modules/mux/dummy.c b/modules/mux/dummy.c
index 1900c46f4c..6eda7145d4 100644
--- a/modules/mux/dummy.c
+++ b/modules/mux/dummy.c
@@ -2,7 +2,7 @@
  * dummy.c
  *****************************************************************************
  * Copyright (C) 2001, 2002 VideoLAN
- * $Id: dummy.c,v 1.4 2003/02/24 12:34:29 fenrir Exp $
+ * $Id: dummy.c,v 1.5 2003/02/24 14:14:43 fenrir Exp $
  *
  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
  *          Eric Petit <titer@videolan.org>
@@ -50,7 +50,7 @@
 static int     Open   ( vlc_object_t * );
 static void    Close  ( vlc_object_t * );
 
-static int Capability( int, void *, void * );
+static int Capability(sout_instance_t *, int, void *, void * );
 static int AddStream( sout_instance_t *, sout_input_t * );
 static int DelStream( sout_instance_t *, sout_input_t * );
 static int Mux      ( sout_instance_t * );
@@ -92,7 +92,7 @@ static void Close( vlc_object_t * p_this )
     msg_Info( p_sout, "Close" );
 }
 
-static int Capability( int i_query, void *p_args, void *p_answer )
+static int Capability( sout_instance_t *p_sout, int i_query, void *p_args, void *p_answer )
 {
    switch( i_query )
    {
diff --git a/modules/mux/mpeg/ps.c b/modules/mux/mpeg/ps.c
index 7b4ec3ff62..eee5a5f8c0 100644
--- a/modules/mux/mpeg/ps.c
+++ b/modules/mux/mpeg/ps.c
@@ -2,7 +2,7 @@
  * ps.c
  *****************************************************************************
  * Copyright (C) 2001, 2002 VideoLAN
- * $Id: ps.c,v 1.8 2003/02/24 12:34:29 fenrir Exp $
+ * $Id: ps.c,v 1.9 2003/02/24 14:14:43 fenrir Exp $
  *
  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
  *          Eric Petit <titer@videolan.org>
@@ -53,7 +53,7 @@
 static int     Open   ( vlc_object_t * );
 static void    Close  ( vlc_object_t * );
 
-static int Capability( int , void *, void * );
+static int Capability(sout_instance_t *, int, void *, void * );
 static int AddStream( sout_instance_t *, sout_input_t * );
 static int DelStream( sout_instance_t *, sout_input_t * );
 static int Mux      ( sout_instance_t * );
@@ -157,7 +157,7 @@ static void Close( vlc_object_t * p_this )
     p_sout->p_mux_data = NULL;
 }
 
-static int Capability( int i_query, void *p_args, void *p_answer )
+static int Capability( sout_instance_t *p_sout, int i_query, void *p_args, void *p_answer )
 {
    switch( i_query )
    {
diff --git a/modules/mux/mpeg/ts.c b/modules/mux/mpeg/ts.c
index ffb639f5bb..e808afb4d1 100644
--- a/modules/mux/mpeg/ts.c
+++ b/modules/mux/mpeg/ts.c
@@ -2,7 +2,7 @@
  * ts.c
  *****************************************************************************
  * Copyright (C) 2001, 2002 VideoLAN
- * $Id: ts.c,v 1.11 2003/02/24 12:34:29 fenrir Exp $
+ * $Id: ts.c,v 1.12 2003/02/24 14:14:43 fenrir Exp $
  *
  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
  *          Eric Petit <titer@videolan.org>
@@ -115,7 +115,8 @@ typedef struct sout_mux_s
 static int     Open   ( vlc_object_t * );
 static void    Close  ( vlc_object_t * );
 
-static int     Capability( int , void *, void * );
+
+static int     Capability(sout_instance_t *, int, void *, void * );
 static int     AddStream( sout_instance_t *, sout_input_t * );
 static int     DelStream( sout_instance_t *, sout_input_t * );
 static int     Mux      ( sout_instance_t * );
@@ -206,7 +207,7 @@ static void Close( vlc_object_t * p_this )
     p_sout->p_mux_data = NULL;
 }
 
-static int Capability( int i_query, void *p_args, void *p_answer )
+static int Capability( sout_instance_t *p_sout, int i_query, void *p_args, void *p_answer )
 {
    switch( i_query )
    {