diff --git a/media/libmediatranscoding/NdkCommon.cpp b/media/libmediatranscoding/NdkCommon.cpp
new file mode 100644
index 0000000..0461a90
--- /dev/null
+++ b/media/libmediatranscoding/NdkCommon.cpp
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2020 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.
+ */
+//#define LOG_NDEBUG 0
+#define LOG_TAG "NdkCommon"
+#include <log/log.h>
+#include <media/NdkCommon.h>
+
+#include <cstdio>
+#include <cstring>
+#include <utility>
+
+/* TODO(b/153592281)
+ * Note: constants used by the native media tests but not available in media ndk api
+ */
+const char* AMEDIA_MIMETYPE_VIDEO_VP8 = "video/x-vnd.on2.vp8";
+const char* AMEDIA_MIMETYPE_VIDEO_VP9 = "video/x-vnd.on2.vp9";
+const char* AMEDIA_MIMETYPE_VIDEO_AV1 = "video/av01";
+const char* AMEDIA_MIMETYPE_VIDEO_AVC = "video/avc";
+const char* AMEDIA_MIMETYPE_VIDEO_HEVC = "video/hevc";
+const char* AMEDIA_MIMETYPE_VIDEO_MPEG4 = "video/mp4v-es";
+const char* AMEDIA_MIMETYPE_VIDEO_H263 = "video/3gpp";
+
+/* TODO(b/153592281) */
+const char* TBD_AMEDIACODEC_PARAMETER_KEY_REQUEST_SYNC_FRAME = "request-sync";
+const char* TBD_AMEDIACODEC_PARAMETER_KEY_VIDEO_BITRATE = "video-bitrate";
+const char* TBD_AMEDIACODEC_PARAMETER_KEY_MAX_B_FRAMES = "max-bframes";
+const char* TBD_AMEDIAFORMAT_KEY_BIT_RATE_MODE = "bitrate-mode";