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diff --git a/libavutil/motion_vector.h b/libavutil/motion_vector.h
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+++ b/libavutil/motion_vector.h
@@ -0,0 +1,50 @@
+/*
+ * 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_MOTION_VECTOR_H
+#define AVUTIL_MOTION_VECTOR_H
+
+#include <stdint.h>
+
+typedef struct AVMotionVector {
+    /**
+     * Where the current macroblock comes from; negative value when it comes
+     * from the past, positive value when it comes from the future.
+     * XXX: set exact relative ref frame reference instead of a +/- 1 "direction".
+     */
+    int32_t source;
+    /**
+     * Width and height of the block.
+     */
+    uint8_t w, h;
+    /**
+     * Absolute source position. Can be outside the frame area.
+     */
+    int16_t src_x, src_y;
+    /**
+     * Absolute destination position. Can be outside the frame area.
+     */
+    int16_t dst_x, dst_y;
+    /**
+     * Extra flag information.
+     * Currently unused.
+     */
+    uint64_t flags;
+} AVMotionVector;
+
+#endif /* AVUTIL_MOTION_VECTOR_H */