diff --git a/Live/src/main/java/com/frank/live/camera/Camera2Helper.java b/Live/src/main/java/com/frank/live/camera/Camera2Helper.java
index d13cfde..77c7354 100644
--- a/Live/src/main/java/com/frank/live/camera/Camera2Helper.java
+++ b/Live/src/main/java/com/frank/live/camera/Camera2Helper.java
@@ -86,32 +86,32 @@ public class Camera2Helper {
         start();
     }
 
-    private int getCameraOri(int rotation, String cameraId) {
-        int degrees = rotation * 90;
+    private int getCameraOrientation(int rotation, String cameraId) {
+        int degree = rotation * 90;
         switch (rotation) {
             case Surface.ROTATION_0:
-                degrees = 0;
+                degree = 0;
                 break;
             case Surface.ROTATION_90:
-                degrees = 90;
+                degree = 90;
                 break;
             case Surface.ROTATION_180:
-                degrees = 180;
+                degree = 180;
                 break;
             case Surface.ROTATION_270:
-                degrees = 270;
+                degree = 270;
                 break;
             default:
                 break;
         }
         int result;
         if (CAMERA_ID_FRONT.equals(cameraId)) {
-            result = (mSensorOrientation + degrees) % 360;
+            result = (mSensorOrientation + degree) % 360;
             result = (360 - result) % 360;
         } else {
-            result = (mSensorOrientation - degrees + 360) % 360;
+            result = (mSensorOrientation - degree + 360) % 360;
         }
-        Log.i(TAG, "getCameraOri: " + rotation + " " + result + " " + mSensorOrientation);
+        Log.i(TAG, "getCameraOrientation, result=" + result);
         return result;
     }
 
@@ -120,19 +120,19 @@ public class Camera2Helper {
 
         @Override
         public void onSurfaceTextureAvailable(SurfaceTexture texture, int width, int height) {
-            Log.i(TAG, "onSurfaceTextureAvailable: ");
+            Log.i(TAG, "onSurfaceTextureAvailable...");
             openCamera();
         }
 
         @Override
         public void onSurfaceTextureSizeChanged(SurfaceTexture texture, int width, int height) {
-            Log.i(TAG, "onSurfaceTextureSizeChanged: ");
+            Log.i(TAG, "onSurfaceTextureSizeChanged, width=" + width + "--height=" + height);
             configureTransform(width, height);
         }
 
         @Override
         public boolean onSurfaceTextureDestroyed(SurfaceTexture texture) {
-            Log.i(TAG, "onSurfaceTextureDestroyed: ");
+            Log.i(TAG, "onSurfaceTextureDestroyed...");
             return true;
         }
 
@@ -151,7 +151,7 @@ public class Camera2Helper {
             mCameraDevice = cameraDevice;
             createCameraPreviewSession();
             if (camera2Listener != null) {
-                camera2Listener.onCameraOpened(mPreviewSize, getCameraOri(rotation, mCameraId));
+                camera2Listener.onCameraOpened(mPreviewSize, getCameraOrientation(rotation, mCameraId));
             }
         }
 
@@ -179,6 +179,7 @@ public class Camera2Helper {
         }
 
     };
+
     private final CameraCaptureSession.StateCallback mCaptureStateCallback = new CameraCaptureSession.StateCallback() {
 
         @Override
@@ -286,7 +287,7 @@ public class Camera2Helper {
         context = null;
     }
 
-    private void setUpCameraOutputs(CameraManager cameraManager) {
+    private void setUpCameraOutput(CameraManager cameraManager) {
         try {
             if (configCameraParams(cameraManager, specificCameraId)) {
                 return;
@@ -330,7 +331,7 @@ public class Camera2Helper {
 
     private void openCamera() {
         CameraManager cameraManager = (CameraManager) context.getSystemService(Context.CAMERA_SERVICE);
-        setUpCameraOutputs(cameraManager);
+        setUpCameraOutput(cameraManager);
         configureTransform(mTextureView.getWidth(), mTextureView.getHeight());
         try {
             if (!mCameraOpenCloseLock.tryAcquire(2500, TimeUnit.MILLISECONDS)) {
@@ -463,7 +464,6 @@ public class Camera2Helper {
         } else if (Surface.ROTATION_180 == rotation) {
             matrix.postRotate(180, centerX, centerY);
         }
-        Log.i(TAG, "configureTransform: " + getCameraOri(rotation, mCameraId) + "  " + rotation * 90);
         mTextureView.setTransform(matrix);
     }
 
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index e766a9d..172c5a6 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -20,7 +20,6 @@
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:roundIcon="@mipmap/ic_launcher_round"
-        android:screenOrientation="landscape"
         android:supportsRtl="true"
         android:theme="@style/AppTheme"
         tools:replace="android:name">
@@ -39,7 +38,7 @@
         <activity android:name=".activity.PushActivity" />
         <activity
             android:name=".activity.LiveActivity"
-            android:screenOrientation="landscape" />
+            android:configChanges="orientation" />
         <activity
             android:name=".activity.FilterActivity"
             android:screenOrientation="landscape" />
diff --git a/app/src/main/java/com/frank/ffmpeg/activity/LiveActivity.kt b/app/src/main/java/com/frank/ffmpeg/activity/LiveActivity.kt
index 392a2a1..5b235bc 100644
--- a/app/src/main/java/com/frank/ffmpeg/activity/LiveActivity.kt
+++ b/app/src/main/java/com/frank/ffmpeg/activity/LiveActivity.kt
@@ -2,6 +2,7 @@ package com.frank.ffmpeg.activity
 
 import android.annotation.SuppressLint
 import android.content.IntentFilter
+import android.content.res.Configuration
 import android.media.AudioFormat
 import android.net.ConnectivityManager
 import android.os.Bundle
@@ -153,6 +154,11 @@ open class LiveActivity : BaseActivity(), CompoundButton.OnCheckedChangeListener
         }
     }
 
+    override fun onConfigurationChanged(newConfig: Configuration) {
+        super.onConfigurationChanged(newConfig)
+        Log.i(TAG, "onConfigurationChanged, orientation=" + newConfig.orientation)
+    }
+
     companion object {
 
         private val TAG = LiveActivity::class.java.simpleName