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diff --git a/contrib/ffmpeg/cmdutils.h b/contrib/ffmpeg/cmdutils.h
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+/*
+ * Various utilities for command line tools
+ * copyright (c) 2003 Fabrice Bellard
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef FFMPEG_CMDUTILS_H
+#define FFMPEG_CMDUTILS_H
+
+#include <inttypes.h>
+
+/**
+ * Parses a string and returns its corresponding value as a double.
+ * Exits from the application if the string cannot be correctly
+ * parsed or the corresponding value is invalid.
+ *
+ * @param context the context of the value to be set (e.g. the
+ * corresponding commandline option name)
+ * @param numstr the string to be parsed
+ * @param type the type (OPT_INT64 or OPT_FLOAT) as which the
+ * string should be parsed
+ * @param min the minimum valid accepted value
+ * @param max the maximum valid accepted value
+ */
+double parse_number_or_die(const char *context, const char *numstr, int type, double min, double max);
+
+typedef struct {
+    const char *name;
+    int flags;
+#define HAS_ARG    0x0001
+#define OPT_BOOL   0x0002
+#define OPT_EXPERT 0x0004
+#define OPT_STRING 0x0008
+#define OPT_VIDEO  0x0010
+#define OPT_AUDIO  0x0020
+#define OPT_GRAB   0x0040
+#define OPT_INT    0x0080
+#define OPT_FLOAT  0x0100
+#define OPT_SUBTITLE 0x0200
+#define OPT_FUNC2  0x0400
+#define OPT_INT64  0x0800
+     union {
+        void (*func_arg)(const char *); //FIXME passing error code as int return would be nicer then exit() in the func
+        int *int_arg;
+        char **str_arg;
+        float *float_arg;
+        int (*func2_arg)(const char *, const char *);
+        int64_t *int64_arg;
+    } u;
+    const char *help;
+    const char *argname;
+} OptionDef;
+
+void show_help_options(const OptionDef *options, const char *msg, int mask, int value);
+
+/**
+ * Parses the command line arguments.
+ * @param options Array with the definitions required to interpret every
+ * option of the form: -<option_name> [<argument>]
+ * @param parse_arg_function Name of the function called to process every
+ * argument without a leading option name flag. NULL if such arguments do
+ * not have to be processed.
+ */
+void parse_options(int argc, char **argv, const OptionDef *options,
+                   void (* parse_arg_function)(const char*));
+
+void print_error(const char *filename, int err);
+
+/**
+ * Prints the program banner to stderr. The banner contents depend on the
+ * current version of the repository and of the libav* libraries used by
+ * the program.
+ * @param program_name name of the program
+ * @param program_birth_year year of birth of the program
+ */
+void show_banner(const char *program_name, int program_birth_year);
+
+/**
+ * Prints the version of the program to stdout. The version message
+ * depends on the current versions of the repository and of the libav*
+ * libraries.
+ * @param program_name name of the program
+ */
+void show_version(const char *program_name);
+
+/**
+ * Prints the license of the program to stdout. The license depends on
+ * the license of the libraries compiled into the program.
+ */
+void show_license(void);
+
+#endif /* FFMPEG_CMDUTILS_H */