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diff --git a/libavutil/parseutils.h b/libavutil/parseutils.h
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+/*
+ * 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 AVUTIL_PARSEUTILS_H
+#define AVUTIL_PARSEUTILS_H
+
+#include "libavutil/rational.h"
+
+/**
+ * @file
+ * misc parsing utilities
+ */
+
+/**
+ * Parse str and put in width_ptr and height_ptr the detected values.
+ *
+ * @param[in,out] width_ptr pointer to the variable which will contain the detected
+ * width value
+ * @param[in,out] height_ptr pointer to the variable which will contain the detected
+ * height value
+ * @param[in] str the string to parse: it has to be a string in the format
+ * width x height or a valid video size abbreviation.
+ * @return >= 0 on success, a negative error code otherwise
+ */
+int av_parse_video_size(int *width_ptr, int *height_ptr, const char *str);
+
+/**
+ * Parse str and store the detected values in *rate.
+ *
+ * @param[in,out] rate pointer to the AVRational which will contain the detected
+ * frame rate
+ * @param[in] str the string to parse: it has to be a string in the format
+ * rate_num / rate_den, a float number or a valid video rate abbreviation
+ * @return >= 0 on success, a negative error code otherwise
+ */
+int av_parse_video_rate(AVRational *rate, const char *str);
+
+/**
+ * Put the RGBA values that correspond to color_string in rgba_color.
+ *
+ * @param color_string a string specifying a color. It can be the name of
+ * a color (case insensitive match) or a [0x|#]RRGGBB[AA] sequence,
+ * possibly followed by "@" and a string representing the alpha
+ * component.
+ * The alpha component may be a string composed by "0x" followed by an
+ * hexadecimal number or a decimal number between 0.0 and 1.0, which
+ * represents the opacity value (0x00/0.0 means completely transparent,
+ * 0xff/1.0 completely opaque).
+ * If the alpha component is not specified then 0xff is assumed.
+ * The string "random" will result in a random color.
+ * @param slen length of the initial part of color_string containing the
+ * color. It can be set to -1 if color_string is a null terminated string
+ * containing nothing else than the color.
+ * @return >= 0 in case of success, a negative value in case of
+ * failure (for example if color_string cannot be parsed).
+ */
+int av_parse_color(uint8_t *rgba_color, const char *color_string, int slen,
+                   void *log_ctx);
+
+#endif /* AVUTIL_PARSEUTILS_H */