diff --git a/Fonderie/single.c b/Fonderie/single.c
index a7caacd..fdfbbb3 100644
--- a/Fonderie/single.c
+++ b/Fonderie/single.c
@@ -20,20 +20,22 @@
 /*
  *		singleton/private variables
  */
-
 static int		nextpng, counter;
 static char		*destination;
 static int		chainfilter;
 
+/*		and the classic global var			*/
+extern int		verbosity;
+
 /* -------------------------------------------------------------- */
-int single_init(int next, char *dest, int fxchain)
+int single_init(int next, char *dest, int fxchain, int outfmt)
 {
 int			foo;
 struct stat		stbuf;
 
 #if DEBUG_LEVEL
-fprintf(stderr, ">>> %s ( %d '%s' %d )\n", __func__,
-			next, dest, fxchain);
+fprintf(stderr, ">>> %s ( %d '%s' %d %d )\n", __func__,
+			next, dest, fxchain, outfmt);
 #endif
 
 nextpng = next;
diff --git a/Fonderie/single.h b/Fonderie/single.h
index 7f2cea4..d197ac7 100644
--- a/Fonderie/single.h
+++ b/Fonderie/single.h
@@ -6,7 +6,7 @@
 
 /* -------------------------------------------------------------- */
 
-int single_init(int next, char *dest, int fxchain);
+int single_init(int next, char *dest, int fxchain, int outfmt);
 int single_push_picture(FloatImg *pimg);
 
 int single_print_state(char *title, int k);
diff --git a/Fonderie/singlepass.c b/Fonderie/singlepass.c
index c3154b2..eb0be50 100644
--- a/Fonderie/singlepass.c
+++ b/Fonderie/singlepass.c
@@ -23,7 +23,8 @@
 int		verbosity;
 
 /* ----------------------------------------------------------- */
-int run_the_singlepass(char *globber, char *destdir, int fchain)
+int run_the_singlepass(char *globber, char *destdir,
+					int fchain, int outfmt)
 {
 FloatImg	image = { 0 };
 int		idx, foo;
@@ -32,15 +33,15 @@ char		*fname;
 double		elapsed;
 
 #if DEBUG_LEVEL
-fprintf(stderr, ">>> %s ( '%s' '%s' %d )\n", __func__,
-				globber, destdir, fchain);
+fprintf(stderr, ">>> %s ( '%s' '%s' %d %d )\n", __func__,
+				globber, destdir, fchain, outfmt);
 #endif
 
 // filterstack_list(fchain, "Run the single pass");
 
 (void)fimg_timer_set(0);
 
-foo = single_init(0, destdir, fchain);
+foo = single_init(0, destdir, fchain, outfmt);
 if (foo) {
 	fprintf(stderr, "erreur %d single_init\n", foo);
 	return foo;
@@ -106,8 +107,10 @@ for (idx=0; idx<globbuf.gl_pathc; idx++) {
 
 fprintf(stderr, "\n");
 
+globfree(&globbuf);
+
 fimg_destroy(&image);
-single_print_state("end of run :)", 0);
+single_print_state("end of run", 0);
 
 elapsed = fimg_timer_get(0);
 fprintf(stderr, "%s: %ld frames, elapsed %.3f s, %.3f fps\n",
@@ -139,12 +142,18 @@ int		foo, opt;
 char		*filterchain =   "none";
 char		*globbing    =   "./capture/?????.fimg";
 char		*outdir      =   "./p8";
+char		*outtype     =   ".png";
 int		do_xper = 0;
 
 fprintf(stderr, "*** %s : compiled %s %s\n", __FILE__,
                         __DATE__, __TIME__);
 fimg_print_version(2);
 
+if (argc < 2) {
+	fprintf(stderr, "\t/!\\ %s is option driven\n", argv[0]);
+	help();
+	}
+
 while ((opt = getopt(argc, argv, "hF:g:LO:svx")) != -1) {
 	switch (opt) {
 		case 'h':	help();			break;
@@ -179,11 +188,11 @@ if (verbosity) {
 	fprintf(stderr, "\tpid               %d\n", getpid());
 	fprintf(stderr, "\tinput glob        %s\n", globbing);
 	fprintf(stderr, "\tfilter chain      %s\n", filterchain);
-	fprintf(stderr, "\tourput dir        %s\n", outdir);
+	fprintf(stderr, "\toutput dir        %s\n", outdir);
 	fprintf(stderr, "\tdo xper           %d\n", do_xper);
 	}
 
-foo = run_the_singlepass(globbing, outdir, FILTERS);
+foo = run_the_singlepass(globbing, outdir, FILTERS, -1);
 fprintf(stderr, "\n\tRun the single pass --> %d\n", foo);
 
 return 0;
diff --git a/Fonderie/t.c b/Fonderie/t.c
index 8d45b2c..288cc1e 100644
--- a/Fonderie/t.c
+++ b/Fonderie/t.c
@@ -89,7 +89,7 @@ fprintf(stderr, ">>> %s ( '%s' '%s' %d )\n", __func__,
 
 filterstack_list(chain, "essai du single");
 
-foo = single_init(0, destdir, chain);
+foo = single_init(0, destdir, chain, -1);
 if (foo) {
 	fprintf(stderr, "erreur %d single_init\n", foo);
 	return foo;