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  dependencies {
      // ... other dependencies

      compile 'com.afollestad:material-camera:0.2.14'
  }

  <activity
      android:name="com.afollestad.materialcamera.CaptureActivity"
      android:theme="@style/MaterialCamera.CaptureActivity" />
  <activity
      android:name="com.afollestad.materialcamera.CaptureActivity2"
      android:theme="@style/MaterialCamera.CaptureActivity" />

  private final static int CAMERA_RQ = 6969;

  File saveFolder = new File(Environment.getExternalStorageDirectory(), "MaterialCamera Sample");
  if (!saveFolder.mkdirs())
      throw new RuntimeException("Unable to create save directory, make sure WRITE_EXTERNAL_STORAGE permission is granted.");

  new MaterialCamera(this)                               // Constructor takes an Activity
      .allowRetry(true)                                  // Whether or not 'Retry' is visible during playback
      .autoSubmit(false)                                 // Whether or not user is allowed to playback videos after recording. This can affect other things, discussed in the next section.
      .saveDir(saveFolder)                               // The folder recorded videos are saved to
      .primaryColorAttr(R.attr.colorPrimary)             // The theme color used for the camera, defaults to colorPrimary of Activity in the constructor
      .showPortraitWarning(true)                         // Whether or not a warning is displayed if the user presses record in portrait orientation
      .defaultToFrontFacing(false)                       // Whether or not the camera will initially show the front facing camera
      .retryExits(false)                                 // If true, the 'Retry' button in the playback screen will exit the camera instead of going back to the recorder
      .restartTimerOnRetry(false)                        // If true, the countdown timer is reset to 0 when the user taps 'Retry' in playback
      .continueTimerInPlayback(false)                    // If true, the countdown timer will continue to go down during playback, rather than pausing.
      .videoEncodingBitRate(1024000)                     // Sets a custom bit rate for video recording.
      .audioEncodingBitRate(50000)                       // Sets a custom bit rate for audio recording.
      .videoFrameRate(24)                                // Sets a custom frame rate (FPS) for video recording.
      .qualityProfile(MaterialCamera.QUALITY_HIGH)       // Sets a quality profile, manually setting bit rates or frame rates with other settings will overwrite individual quality profile settings
      .videoPreferredHeight(720)                         // Sets a preferred height for the recorded video output.
      .videoPreferredAspect(4f / 3f)                     // Sets a preferred aspect ratio for the recorded video output.
      .maxAllowedFileSize(1024 * 1024 * 5)               // Sets a max file size of 5MB, recording will stop if file reaches this limit. Keep in mind, the FAT file system has a file size limit of 4GB.
      .iconRecord(R.drawable.mcam_action_play)           // Sets a custom icon for the button used to start recording
      .iconStop(R.drawable.mcam_action_stop)             // Sets a custom icon for the button used to stop recording
      .iconFrontCamera(R.drawable.mcam_camera_front)     // Sets a custom icon for the button used to switch to the front camera
      .iconRearCamera(R.drawable.mcam_camera_rear)       // Sets a custom icon for the button used to switch to the rear camera
      .iconPlay(R.drawable.evp_action_play)              // Sets a custom icon used to start playback
      .iconPause(R.drawable.evp_action_pause)            // Sets a custom icon used to pause playback
      .iconRestart(R.drawable.evp_action_restart)        // Sets a custom icon used to restart playback
      .labelRetry(R.string.mcam_retry)                   // Sets a custom button label for the button used to retry recording, when available
      .labelUseVideo(R.string.mcam_use_video)            // Sets a custom button label for the button used to confirm a recording
      .start(CAMERA_RQ);                                 // Starts the camera activity, the result will be sent back to the current Activity

  new MaterialCamera(this)
      .countdownMinutes(2.5f)
      .start(CAMERA_RQ);

  new MaterialCamera(this)
      .countdownMinutes(2.5f)
      .countdownImmediately(true)
      .start(CAMERA_RQ);

  public class MainActivity extends AppCompatActivity {

      private final static int CAMERA_RQ = 6969;

      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_main);

          new MaterialCamera(this)
              .start(CAMERA_RQ);
      }

      @Override
      protected void onActivityResult(int requestCode, int resultCode, Intent data) {
          super.onActivityResult(requestCode, resultCode, data);

          // Received recording or error from MaterialCamera
          if (requestCode == CAMERA_RQ) {

              if (resultCode == RESULT_OK) {
                  Toast.makeText(this, "Saved to: " + data.getDataString(), Toast.LENGTH_LONG).show();
              } else if(data != null) {
                  Exception e = (Exception) data.getSerializableExtra(MaterialCamera.ERROR_EXTRA);
                  e.printStackTrace();
                  Toast.makeText(this, e.getMessage(), Toast.LENGTH_LONG).show();
              }
          }
      }
  }