Support for video file instead of camera and output video out to file

webrtc/api/android/java/src/org/webrtc/FileVideoCapturerTimer.java

Index: webrtc/api/android/java/src/org/webrtc/FileVideoCapturerTimer.java
diff --git a/webrtc/api/android/java/src/org/webrtc/FileVideoCapturerTimer.java b/webrtc/api/android/java/src/org/webrtc/FileVideoCapturerTimer.java
new file mode 100644
index 0000000000000000000000000000000000000000..ed24471cd9cd8f9c14ccf286daa6ca1f0022409b
--- /dev/null
+++ b/webrtc/api/android/java/src/org/webrtc/FileVideoCapturerTimer.java
@@ -0,0 +1,82 @@
+/*
+ *  Copyright 2016 The WebRTC Project Authors. All rights reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+package org.webrtc;
+
+import android.content.Context;
+
+import java.util.List;
+import java.util.Timer;
+import java.util.TimerTask;
+
+import java.io.File;
+import java.io.RandomAccessFile;
+import java.io.IOException;
+import android.os.Handler;
+
+public class FileVideoCapturerTimer implements CameraVideoCapturer {
+  private final static String TAG = "FileVideoCapturerTimer";
+
+  private FileVideoCapturer fileVideoCapturer;
+  private CapturerObserver capturerObserver;
+  private volatile boolean isCapturing = false;
+  private Timer timer = new Timer();
+  private TimerTask tickTask = new TimerTask() {
+      @Override
+      public void run() {
+        fileVideoCapturer.tick(capturerObserver);
+      }
+    };
+
+  public FileVideoCapturerTimer(FileVideoCapturer fileVideoCapturer) {
+    this.fileVideoCapturer = fileVideoCapturer;
+  }
+
+  @Override
+  public void initialize(SurfaceTextureHelper surfaceTextureHelper, Context applicationContext,
+      CapturerObserver capturerObserver) {
+    this.capturerObserver = capturerObserver;
+  }
+
+  @Override
+  public void startCapture(
+      int width, int height, int framerate) {
+    timer.schedule(tickTask, 0, 33);
+  }
+
+  @Override
+  public void stopCapture() throws InterruptedException {
+    timer.cancel();
+  }
+
+  @Override
+  public void onOutputFormatRequest(int width, int height, int framerate) {
+    // Empty on purpose
+  }
+
+  @Override
+  public void changeCaptureFormat(int width, int height, int framerate) {
+    // Empty on purpose
+  }
+
+  @Override
+  public void dispose() {
+    fileVideoCapturer.dispose();
+  }
+
+  @Override
+  public void switchCamera(CameraSwitchHandler switchEventsHandler) {
+    // Empty on purpose
+  }
+
+  @Override
+  public boolean isScreencast() {
+    return false;
+  }
+}