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diff --git a/media/ffvpx/libavutil/replaygain.h b/media/ffvpx/libavutil/replaygain.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_REPLAYGAIN_H
+#define AVUTIL_REPLAYGAIN_H
+
+#include <stdint.h>
+
+/**
+ * ReplayGain information (see
+ * http://wiki.hydrogenaudio.org/index.php?title=ReplayGain_1.0_specification).
+ * The size of this struct is a part of the public ABI.
+ */
+typedef struct AVReplayGain {
+ /**
+ * Track replay gain in microbels (divide by 100000 to get the value in dB).
+ * Should be set to INT32_MIN when unknown.
+ */
+ int32_t track_gain;
+ /**
+ * Peak track amplitude, with 100000 representing full scale (but values
+ * may overflow). 0 when unknown.
+ */
+ uint32_t track_peak;
+ /**
+ * Same as track_gain, but for the whole album.
+ */
+ int32_t album_gain;
+ /**
+ * Same as track_peak, but for the whole album,
+ */
+ uint32_t album_peak;
+} AVReplayGain;
+
+#endif /* AVUTIL_REPLAYGAIN_H */