diff --git a/media/libmediatranscoding/aidl/android/media/ITranscodingClientCallback.aidl b/media/libmediatranscoding/aidl/android/media/ITranscodingClientCallback.aidl
index e810f1e..1a42809 100644
--- a/media/libmediatranscoding/aidl/android/media/ITranscodingClientCallback.aidl
+++ b/media/libmediatranscoding/aidl/android/media/ITranscodingClientCallback.aidl
@@ -19,6 +19,7 @@
 import android.media.TranscodingErrorCode;
 import android.media.TranscodingJobParcel;
 import android.media.TranscodingResultParcel;
+import android.os.ParcelFileDescriptor;
 
 /**
  * ITranscodingClientCallback
@@ -28,6 +29,15 @@
  * {@hide}
  */
 interface ITranscodingClientCallback {
+    /**
+    * Called to open a raw file descriptor to access data under a URI
+    *
+    * @param fileUri The path of the filename.
+    * @param mode The file mode to use. Must be one of ("r, "w", "rw")
+    * @return ParcelFileDescriptor if open the file successfully, null otherwise.
+    */
+    ParcelFileDescriptor openFileDescriptor(in @utf8InCpp String fileUri,
+                                            in @utf8InCpp String mode);
 
     /**
     * Called when the transcoding associated with the jobId finished.
diff --git a/media/libmediatranscoding/tests/TranscodingClientManager_tests.cpp b/media/libmediatranscoding/tests/TranscodingClientManager_tests.cpp
index 0ae8035..db171ce 100644
--- a/media/libmediatranscoding/tests/TranscodingClientManager_tests.cpp
+++ b/media/libmediatranscoding/tests/TranscodingClientManager_tests.cpp
@@ -59,6 +59,11 @@
 
     virtual ~TestClientCallback() { ALOGI("TestClientCallback destroyed"); };
 
+    Status openFileDescriptor(const std::string& /*in_fileUri*/, const std::string& /*in_mode*/,
+                              ::ndk::ScopedFileDescriptor* /*_aidl_return*/) override {
+        return Status::ok();
+    }
+
     Status onTranscodingFinished(int32_t in_jobId,
                                  const TranscodingResultParcel& in_result) override {
         EXPECT_EQ(in_jobId, in_result.jobId);
diff --git a/media/libmediatranscoding/tests/TranscodingJobScheduler_tests.cpp b/media/libmediatranscoding/tests/TranscodingJobScheduler_tests.cpp
index 25321e3..d4fd483 100644
--- a/media/libmediatranscoding/tests/TranscodingJobScheduler_tests.cpp
+++ b/media/libmediatranscoding/tests/TranscodingJobScheduler_tests.cpp
@@ -162,6 +162,11 @@
         ALOGD("TestClient Created");
     }
 
+    Status openFileDescriptor(const std::string& /*in_fileUri*/, const std::string& /*in_mode*/,
+                              ::ndk::ScopedFileDescriptor* /*_aidl_return*/) override {
+        return Status::ok();
+    }
+
     Status onTranscodingFinished(int32_t in_jobId,
                                  const TranscodingResultParcel& in_result) override {
         EXPECT_EQ(in_jobId, in_result.jobId);
diff --git a/services/mediatranscoding/tests/mediatranscodingservice_tests.cpp b/services/mediatranscoding/tests/mediatranscodingservice_tests.cpp
index 7f7d509..babcfb5 100644
--- a/services/mediatranscoding/tests/mediatranscodingservice_tests.cpp
+++ b/services/mediatranscoding/tests/mediatranscodingservice_tests.cpp
@@ -211,6 +211,11 @@
 
     virtual ~TestClientCallback() { ALOGI("TestClientCallback %d destroyed", mClientId); }
 
+    Status openFileDescriptor(const std::string& /*in_fileUri*/, const std::string& /*in_mode*/,
+                              ::ndk::ScopedFileDescriptor* /*_aidl_return*/) override {
+        return Status::ok();
+    }
+
     Status onTranscodingFinished(
             int32_t in_jobId,
             const ::aidl::android::media::TranscodingResultParcel& /* in_result */) override {