Index: apps/app_mixmonitor.c
===================================================================
--- apps/app_mixmonitor.c	(revision 69470)
+++ apps/app_mixmonitor.c	(working copy)
@@ -41,6 +41,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <unistd.h>
+#include <libgen.h>
 
 #include "asterisk/file.h"
 #include "asterisk/logger.h"
@@ -305,6 +306,7 @@
 	struct ast_module_user *u;
 	struct ast_flags flags = {0};
 	char *parse;
+	char tmp[256];
 	AST_DECLARE_APP_ARGS(args,
 		AST_APP_ARG(filename);
 		AST_APP_ARG(options);
@@ -372,6 +374,8 @@
 		sprintf(build, "%s/%s", ast_config_AST_MONITOR_DIR, args.filename);
 		args.filename = build;
 	}
+	snprintf (tmp, sizeof(tmp), "mkdir -p \"%s\"", dirname(ast_strdupa(args.filename)));
+	ast_safe_system(tmp);
 
 	pbx_builtin_setvar_helper(chan, "MIXMONITOR_FILENAME", args.filename);
 	launch_monitor_thread(chan, args.filename, flags.flags, readvol, writevol, args.post_process);