diff --git a/include/ndk/NdkMediaMuxer.h b/include/ndk/NdkMediaMuxer.h
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+++ b/include/ndk/NdkMediaMuxer.h
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+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+/*
+ * This file defines an NDK API.
+ * Do not remove methods.
+ * Do not change method signatures.
+ * Do not change the value of constants.
+ * Do not change the size of any of the classes defined in here.
+ * Do not reference types that are not part of the NDK.
+ * Do not #include files that aren't part of the NDK.
+ */
+
+#ifndef _NDK_MEDIA_MUXER_H
+#define _NDK_MEDIA_MUXER_H
+
+#include <sys/types.h>
+
+#include "NdkMediaFormat.h"
+#include "NdkMediaCodec.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct AMediaMuxer;
+typedef struct AMediaMuxer AMediaMuxer;
+
+typedef enum {
+    AMEDIAMUXER_OUTPUT_FORMAT_MPEG_4 = 0,
+    AMEDIAMUXER_OUTPUT_FORMAT_WEBM   = 1,
+} OutputFormat;
+
+/**
+ * Create new media muxer
+ */
+AMediaMuxer* AMediaMuxer_new(int fd, OutputFormat format);
+
+/**
+ * Delete a previously created media muxer
+ */
+int AMediaMuxer_delete(AMediaMuxer*);
+
+int AMediaMuxer_setLocation(AMediaMuxer*, float latitude, float longtitude);
+
+int AMediaMuxer_setOrientationHint(AMediaMuxer*, int degrees);
+
+ssize_t AMediaMuxer_addTrack(AMediaMuxer*, const AMediaFormat* format);
+
+int AMediaMuxer_start(AMediaMuxer*);
+
+int AMediaMuxer_stop(AMediaMuxer*);
+
+int AMediaMuxer_writeSampleData(AMediaMuxer *muxer,
+        size_t trackIdx, const uint8_t *data, const AMediaCodecBufferInfo &info);
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif // _NDK_MEDIA_MUXER_H