diff --git a/Android/APIExample/app/src/main/java/io/agora/api/example/examples/advanced/LocalVideoTranscoding.java b/Android/APIExample/app/src/main/java/io/agora/api/example/examples/advanced/LocalVideoTranscoding.java
index 7852f5d6d..8e64a1256 100644
--- a/Android/APIExample/app/src/main/java/io/agora/api/example/examples/advanced/LocalVideoTranscoding.java
+++ b/Android/APIExample/app/src/main/java/io/agora/api/example/examples/advanced/LocalVideoTranscoding.java
@@ -6,7 +6,6 @@
 
 import android.annotation.SuppressLint;
 import android.content.Context;
-import android.graphics.Color;
 import android.os.Bundle;
 import android.util.DisplayMetrics;
 import android.util.Log;
@@ -472,7 +471,7 @@ public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
         if (buttonView == switchTransparentBackground) {
             engine.enableVirtualBackground(isChecked,
                     new VirtualBackgroundSource(VirtualBackgroundSource.BACKGROUND_COLOR,
-                            Color.TRANSPARENT, "",
+                            0x00000000, "",
                             VirtualBackgroundSource.BLUR_DEGREE_HIGH),
                     new SegmentationProperty());
         }
diff --git a/Android/APIExample/app/src/main/java/io/agora/api/example/examples/advanced/TransparentRendering.java b/Android/APIExample/app/src/main/java/io/agora/api/example/examples/advanced/TransparentRendering.java
index afab73e38..1583744b8 100644
--- a/Android/APIExample/app/src/main/java/io/agora/api/example/examples/advanced/TransparentRendering.java
+++ b/Android/APIExample/app/src/main/java/io/agora/api/example/examples/advanced/TransparentRendering.java
@@ -239,6 +239,7 @@ private void joinChannel(String channelId) {
                 STANDARD_BITRATE,
                 VideoEncoderConfiguration.ORIENTATION_MODE.valueOf(((MainApplication) getActivity().getApplication()).getGlobalSettings().getVideoEncodingOrientation())
         );
+        config.advanceOptions.encodeAlpha = true;
         engine.setVideoEncoderConfiguration(config);
 
         engine.setExternalVideoSource(true, true, Constants.ExternalVideoSourceType.VIDEO_FRAME);