diff --git a/.github/ci/build/build_ios.sh b/.github/ci/build/build_ios.sh
index 6cfc26eb0..619315616 100644
--- a/.github/ci/build/build_ios.sh
+++ b/.github/ci/build/build_ios.sh
@@ -53,6 +53,11 @@ echo short_version: $short_version
 echo pwd: `pwd`
 echo sdk_url: $sdk_url
 
+export https_proxy=10.10.114.55:1080
+export http_proxy=10.10.114.55:1080
+export all_proxy=10.10.114.55:1080
+export LANG=en_US.UTF-8
+
 unzip_name=Agora_Native_SDK_for_iOS_FULL
 zip_name=output.zip
 sdk_url_flag=false
diff --git a/.github/ci/build/build_mac.sh b/.github/ci/build/build_mac.sh
index e0d163db8..5c48c25f3 100644
--- a/.github/ci/build/build_mac.sh
+++ b/.github/ci/build/build_mac.sh
@@ -51,6 +51,11 @@ echo short_version: $short_version
 echo pwd: `pwd`
 echo sdk_url: $sdk_url
 
+export https_proxy=10.10.114.55:1080
+export http_proxy=10.10.114.55:1080
+export all_proxy=10.10.114.55:1080
+export LANG=en_US.UTF-8
+
 unzip_name=Agora_Native_SDK_for_iOS_FULL
 zip_name=output.zip
 sdk_url_flag=false
@@ -60,7 +65,7 @@ if [ -z "$sdk_url" ]; then
    sdk_url_flag=false
    echo "sdk_url is empty"
    echo unzip_name: $unzip_name 
-   mkdir ./$unzip_name/samples
+   mkdir -p ./$unzip_name/samples
    cp -rf ./macOS ./$unzip_name/samples/APIExample || exit 1
    ls -al ./$unzip_name/samples/API-Example/
 else 
diff --git a/.gitignore b/.gitignore
index b27e7ef9b..606b91bdf 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@ xcuserdata
 .DS_Store
 AgoraRtcKit.framework
 */libs
+/sdk
diff --git a/Android/APIExample-Audio/app/src/main/java/io/agora/api/example/examples/advanced/ProcessAudioRawData.java b/Android/APIExample-Audio/app/src/main/java/io/agora/api/example/examples/advanced/ProcessAudioRawData.java
index b9c7b0001..fa2112fe8 100644
--- a/Android/APIExample-Audio/app/src/main/java/io/agora/api/example/examples/advanced/ProcessAudioRawData.java
+++ b/Android/APIExample-Audio/app/src/main/java/io/agora/api/example/examples/advanced/ProcessAudioRawData.java
@@ -328,7 +328,7 @@ public boolean onEarMonitoringAudioFrame(int type, int samplesPerChannel, int by
         }
 
         @Override
-        public boolean onPlaybackAudioFrameBeforeMixing(String channelId, int uid, int type, int samplesPerChannel, int bytesPerSample, int channels, int samplesPerSec, ByteBuffer buffer, long renderTimeMs, int avsync_type, int rtpTimestamp) {
+        public boolean onPlaybackAudioFrameBeforeMixing(String channelId, int uid, int type, int samplesPerChannel, int bytesPerSample, int channels, int samplesPerSec, ByteBuffer buffer, long renderTimeMs, int avsync_type, int rtpTimestamp, long presentationMs) {
             return false;
         }
 
diff --git a/Android/APIExample-Audio/gradle.properties b/Android/APIExample-Audio/gradle.properties
index ae0306701..7c1f8e00f 100644
--- a/Android/APIExample-Audio/gradle.properties
+++ b/Android/APIExample-Audio/gradle.properties
@@ -21,4 +21,4 @@ android.enableJetifier=true
 # read enable simple filter section on README first before set this flag to TRUE
 simpleFilter = false
 
-rtc_sdk_version = 4.5.0
\ No newline at end of file
+rtc_sdk_version = 4.5.1
\ No newline at end of file
diff --git a/Android/APIExample-Compose/app/src/main/java/io/agora/api/example/compose/samples/OriginAudioData.kt b/Android/APIExample-Compose/app/src/main/java/io/agora/api/example/compose/samples/OriginAudioData.kt
index dce16b412..b67566201 100644
--- a/Android/APIExample-Compose/app/src/main/java/io/agora/api/example/compose/samples/OriginAudioData.kt
+++ b/Android/APIExample-Compose/app/src/main/java/io/agora/api/example/compose/samples/OriginAudioData.kt
@@ -354,7 +354,8 @@ private class OriginAudioDataRewriter(
         buffer: ByteBuffer?,
         renderTimeMs: Long,
         avsync_type: Int,
-        rtpTimestamp: Int
+        rtpTimestamp: Int,
+        presentationMs: Long
     ) = false
 
     override fun getObservedAudioFramePosition() =
diff --git a/Android/APIExample-Compose/gradle.properties b/Android/APIExample-Compose/gradle.properties
index 58fe9e1a3..b50d3a2b9 100644
--- a/Android/APIExample-Compose/gradle.properties
+++ b/Android/APIExample-Compose/gradle.properties
@@ -22,4 +22,4 @@ kotlin.code.style=official
 # thereby reducing the size of the R class for that library
 android.nonTransitiveRClass=true
 
-rtc_sdk_version = 4.5.0
\ No newline at end of file
+rtc_sdk_version = 4.5.1
\ No newline at end of file
diff --git a/Android/APIExample-Compose/gradle/libs.versions.toml b/Android/APIExample-Compose/gradle/libs.versions.toml
index 0a90ebb75..a80f21448 100644
--- a/Android/APIExample-Compose/gradle/libs.versions.toml
+++ b/Android/APIExample-Compose/gradle/libs.versions.toml
@@ -12,7 +12,7 @@ composeBom = "2023.08.00"
 loggingInterceptor = "4.10.0"
 materialIconsExtended = "1.6.0"
 navigationCompose = "2.7.7"
-#agoraSdk = "4.5.0"
+#agoraSdk = "4.5.1"
 okhttp = "4.10.0"
 
 [libraries]
diff --git a/Android/APIExample/agora-simple-filter/src/main/cpp/AgoraRtcKit/AgoraBase.h b/Android/APIExample/agora-simple-filter/src/main/cpp/AgoraRtcKit/AgoraBase.h
index c3bfa34cb..9f106238d 100644
--- a/Android/APIExample/agora-simple-filter/src/main/cpp/AgoraRtcKit/AgoraBase.h
+++ b/Android/APIExample/agora-simple-filter/src/main/cpp/AgoraRtcKit/AgoraBase.h
@@ -427,6 +427,10 @@ enum WARN_CODE_TYPE {
    * 1053: Audio Device Module: The settings are improper.
    */
   WARN_ADM_IMPROPER_SETTINGS = 1053,
+  /**
+   * 1055: Audio Device Module: The audio device is in a pop state.
+   */
+  WARN_ADM_POP_STATE = 1055,
   /**
    * 1322: No recording device.
    */
@@ -2701,9 +2705,17 @@ enum AUDIO_SCENARIO_TYPE {
    */
   AUDIO_SCENARIO_MEETING = 8,
   /**
-   * 9: The number of enumerations.
+   * 9: AI Server.
+   */
+  AUDIO_SCENARIO_AI_SERVER = 9,
+  /**
+   * 10: AI Client.
+   */
+  AUDIO_SCENARIO_AI_CLIENT = 10,
+  /**
+   * 11: The number of enumerations.
    */
-  AUDIO_SCENARIO_NUM = 9,
+  AUDIO_SCENARIO_NUM = 11,
 };
 
 /**
diff --git a/Android/APIExample/agora-simple-filter/src/main/cpp/AgoraRtcKit/NGIAgoraLocalUser.h b/Android/APIExample/agora-simple-filter/src/main/cpp/AgoraRtcKit/NGIAgoraLocalUser.h
index debc52706..86b423b76 100644
--- a/Android/APIExample/agora-simple-filter/src/main/cpp/AgoraRtcKit/NGIAgoraLocalUser.h
+++ b/Android/APIExample/agora-simple-filter/src/main/cpp/AgoraRtcKit/NGIAgoraLocalUser.h
@@ -1577,7 +1577,7 @@ class ILocalUserObserver {
   /**
    * datastream from this connection.
    */
-  virtual void onStreamMessage(user_id_t userId, int streamId, const char* data, size_t length) {}
+  virtual void onStreamMessage(user_id_t userId, int streamId, const char* data, size_t length, uint64_t sendTs = 0) {}
 
   /**
    * Occurs when the remote user state is updated.
diff --git a/Android/APIExample/agora-stream-encrypt/src/main/cpp/include/agora/AgoraBase.h b/Android/APIExample/agora-stream-encrypt/src/main/cpp/include/agora/AgoraBase.h
index c3bfa34cb..9f106238d 100644
--- a/Android/APIExample/agora-stream-encrypt/src/main/cpp/include/agora/AgoraBase.h
+++ b/Android/APIExample/agora-stream-encrypt/src/main/cpp/include/agora/AgoraBase.h
@@ -427,6 +427,10 @@ enum WARN_CODE_TYPE {
    * 1053: Audio Device Module: The settings are improper.
    */
   WARN_ADM_IMPROPER_SETTINGS = 1053,
+  /**
+   * 1055: Audio Device Module: The audio device is in a pop state.
+   */
+  WARN_ADM_POP_STATE = 1055,
   /**
    * 1322: No recording device.
    */
@@ -2701,9 +2705,17 @@ enum AUDIO_SCENARIO_TYPE {
    */
   AUDIO_SCENARIO_MEETING = 8,
   /**
-   * 9: The number of enumerations.
+   * 9: AI Server.
+   */
+  AUDIO_SCENARIO_AI_SERVER = 9,
+  /**
+   * 10: AI Client.
+   */
+  AUDIO_SCENARIO_AI_CLIENT = 10,
+  /**
+   * 11: The number of enumerations.
    */
-  AUDIO_SCENARIO_NUM = 9,
+  AUDIO_SCENARIO_NUM = 11,
 };
 
 /**
diff --git a/Android/APIExample/app/src/main/java/io/agora/api/example/examples/advanced/PictureInPicture.java b/Android/APIExample/app/src/main/java/io/agora/api/example/examples/advanced/PictureInPicture.java
index 4c21e0082..87913abe3 100644
--- a/Android/APIExample/app/src/main/java/io/agora/api/example/examples/advanced/PictureInPicture.java
+++ b/Android/APIExample/app/src/main/java/io/agora/api/example/examples/advanced/PictureInPicture.java
@@ -210,6 +210,10 @@ public void onPermissionsResult(boolean allPermissionsGranted, String[] permissi
                 fl_remote3.removeAllViews();
             }
         } else if (v.getId() == switch_float_window.getId()) {
+            if (Build.VERSION.SDK_INT >= 26 && requireActivity().isInPictureInPictureMode()) {
+                showLongToast("Please exit Picture-in-Picture mode first");
+                return;
+            }
             showFloatWindow();
         } else if (v.getId() == R.id.btn_pip) {
             if (checkPipSupported()) {
@@ -500,7 +504,7 @@ private VideoReportLayout getRemoteView(int uid) {
     private void showFloatWindow() {
         FragmentActivity context = requireActivity();
         if (FloatWindowHelper.checkPermission(context)) {
-            if (isFloatWindowShowing()) {
+            if (isFloatWindowShowing() || (Build.VERSION.SDK_INT >= 26 && requireActivity().isInPictureInPictureMode())) {
                 return;
             }
             floatWindowView = FloatWindowHelper.createFloatView(context, 50, 50);
@@ -563,6 +567,11 @@ private void enterPip() {
         if (android.os.Build.VERSION.SDK_INT < 26) {
             return;
         }
+        
+        if(isFloatWindowShowing()) {
+            dismissFloatWindow();
+        }
+        
         requireActivity().enterPictureInPictureMode(pictureInPictureParamsBuilder
                 .setAspectRatio(new Rational(video_layout_container.getWidth(), video_layout_container.getHeight()))
                 .build());
diff --git a/Android/APIExample/app/src/main/java/io/agora/api/example/examples/advanced/ProcessAudioRawData.java b/Android/APIExample/app/src/main/java/io/agora/api/example/examples/advanced/ProcessAudioRawData.java
index ec4d0dd86..c71801453 100644
--- a/Android/APIExample/app/src/main/java/io/agora/api/example/examples/advanced/ProcessAudioRawData.java
+++ b/Android/APIExample/app/src/main/java/io/agora/api/example/examples/advanced/ProcessAudioRawData.java
@@ -340,7 +340,7 @@ public boolean onEarMonitoringAudioFrame(int type, int samplesPerChannel, int by
         }
 
         @Override
-        public boolean onPlaybackAudioFrameBeforeMixing(String channelId, int uid, int type, int samplesPerChannel, int bytesPerSample, int channels, int samplesPerSec, ByteBuffer buffer, long renderTimeMs, int avsync_type, int rtpTimestamp) {
+        public boolean onPlaybackAudioFrameBeforeMixing(String channelId, int uid, int type, int samplesPerChannel, int bytesPerSample, int channels, int samplesPerSec, ByteBuffer buffer, long renderTimeMs, int avsync_type, int rtpTimestamp, long presentationMs) {
             return false;
         }
 
diff --git a/Android/APIExample/gradle.properties b/Android/APIExample/gradle.properties
index 903fe7611..3b22c9c75 100644
--- a/Android/APIExample/gradle.properties
+++ b/Android/APIExample/gradle.properties
@@ -23,4 +23,4 @@ simpleFilter = false
 # read enable stream encrypt section on README first before set this flag to TRUE
 streamEncrypt = false
 
-rtc_sdk_version = 4.5.0
+rtc_sdk_version = 4.5.1
diff --git a/iOS/APIExample-Audio/Podfile b/iOS/APIExample-Audio/Podfile
index 5f8a873f1..0e9cc76be 100644
--- a/iOS/APIExample-Audio/Podfile
+++ b/iOS/APIExample-Audio/Podfile
@@ -7,10 +7,10 @@ target 'APIExample-Audio' do
   
   pod 'Floaty', '~> 4.2.0'
   pod 'AGEVideoLayout', '~> 1.0.2'
-  pod 'AgoraAudio_iOS', '4.5.0'
+  pod 'AgoraAudio_iOS', '4.5.1'
 #  pod 'sdk', :path => 'sdk.podspec'
 end
 
 pre_install do |installer|
-  # system("sh .download_script.sh 4.5.0 true")
+  # system("sh .download_script.sh 4.5.1 true")
 end
diff --git a/iOS/APIExample-OC/APIExample-OC/Examples/Advanced/CustomAudioRender/CustomAudioRender.m b/iOS/APIExample-OC/APIExample-OC/Examples/Advanced/CustomAudioRender/CustomAudioRender.m
index 85989534d..8264d3f13 100644
--- a/iOS/APIExample-OC/APIExample-OC/Examples/Advanced/CustomAudioRender/CustomAudioRender.m
+++ b/iOS/APIExample-OC/APIExample-OC/Examples/Advanced/CustomAudioRender/CustomAudioRender.m
@@ -94,7 +94,8 @@ - (void)viewDidLoad {
     NSString *channelName = [self.configs objectForKey:@"channelName"];
     // enable video module and set up video encoding configs
     [self.agoraKit enableAudio];
-    
+    [self.agoraKit setAudioScenario:AgoraAudioScenarioGameStreaming];
+
     // set up local video to render your local camera preview
     AgoraRtcVideoCanvas *videoCanvas = [[AgoraRtcVideoCanvas alloc] init];
     videoCanvas.uid = 0;
@@ -113,7 +114,7 @@ - (void)viewDidLoad {
     // when joining channel. The channel name and uid used to calculate
     // the token has to match the ones used for channel join
     AgoraRtcChannelMediaOptions *options = [[AgoraRtcChannelMediaOptions alloc] init];
-    options.publishMicrophoneTrack = NO;
+    options.publishMicrophoneTrack = YES;
     options.publishCameraTrack = NO;
     options.autoSubscribeAudio = YES;
     options.autoSubscribeVideo = NO;
diff --git a/iOS/APIExample-OC/APIExample-OC/Examples/Advanced/StreamEncryption/StreamEncryption.m b/iOS/APIExample-OC/APIExample-OC/Examples/Advanced/StreamEncryption/StreamEncryption.m
index 4d880ca67..4b2df6ce2 100644
--- a/iOS/APIExample-OC/APIExample-OC/Examples/Advanced/StreamEncryption/StreamEncryption.m
+++ b/iOS/APIExample-OC/APIExample-OC/Examples/Advanced/StreamEncryption/StreamEncryption.m
@@ -116,7 +116,7 @@ - (void)viewDidLoad {
     NSString *channelName = [self.configs objectForKey:@"channelName"];
     NSString *secret = [self.configs objectForKey:@"secret"];
     AgoraEncryptionMode mode = ((NSNumber *)[self.configs objectForKey:@"mode"]).integerValue;
-    BOOL useCustom = ((NSNumber *)[self.configs objectForKey:@"useCustom"]).boolValue;
+    BOOL useCustom = ((NSNumber *)[self.configs objectForKey:@"userCustom"]).boolValue;
     // make myself a broadcaster
     [self.agoraKit setClientRole:(AgoraClientRoleBroadcaster)];
     // enable video module and set up video encoding configs
diff --git a/iOS/APIExample-OC/Podfile b/iOS/APIExample-OC/Podfile
index 8bdb605ed..29e36733d 100644
--- a/iOS/APIExample-OC/Podfile
+++ b/iOS/APIExample-OC/Podfile
@@ -2,7 +2,7 @@
 # platform :ios, '9.0'
 
 def common_pods
-  pod 'AgoraRtcEngine_iOS', '4.5.0'
+  pod 'AgoraRtcEngine_iOS', '4.5.1'
 #  pod 'sdk', :path => 'sdk.podspec'
 end
 
@@ -26,5 +26,5 @@ target 'SimpleFilter' do
 end
 
 pre_install do |installer|
-  # system("sh .download_script.sh 4.5.0 true")
+  # system("sh .download_script.sh 4.5.1 true")
 end
diff --git a/iOS/APIExample-SwiftUI/APIExample-SwiftUI/Examples/Advanced/PictureInPicture/CustomRender/CustomRenderExample.swift b/iOS/APIExample-SwiftUI/APIExample-SwiftUI/Examples/Advanced/PictureInPicture/CustomRender/CustomRenderExample.swift
index 29f2aa4ba..1663b9b0d 100644
--- a/iOS/APIExample-SwiftUI/APIExample-SwiftUI/Examples/Advanced/PictureInPicture/CustomRender/CustomRenderExample.swift
+++ b/iOS/APIExample-SwiftUI/APIExample-SwiftUI/Examples/Advanced/PictureInPicture/CustomRender/CustomRenderExample.swift
@@ -49,7 +49,7 @@ struct CustomRenderExample: View {
         VStack(spacing: 30) {
             PIPDisplayView(viewModel: pipViewModel)
                 .frame(maxWidth: .infinity, maxHeight: 200)
-        
+            
             Button {
                 pipViewModel.togglePiP()
             } label: {
@@ -78,7 +78,6 @@ struct CustomRenderExample: View {
             customRenderViewModel.cleanRtc()
         }
         .frame(maxWidth: .infinity, maxHeight: .infinity)
-        .adaptiveBackground(Color.orange)
     }
 }
 
diff --git a/iOS/APIExample-SwiftUI/APIExample-SwiftUI/Examples/Advanced/PictureInPicture/PIPCommon/PIPDisplayView.swift b/iOS/APIExample-SwiftUI/APIExample-SwiftUI/Examples/Advanced/PictureInPicture/PIPCommon/PIPDisplayView.swift
index a0782f96b..7ad1f0147 100644
--- a/iOS/APIExample-SwiftUI/APIExample-SwiftUI/Examples/Advanced/PictureInPicture/PIPCommon/PIPDisplayView.swift
+++ b/iOS/APIExample-SwiftUI/APIExample-SwiftUI/Examples/Advanced/PictureInPicture/PIPCommon/PIPDisplayView.swift
@@ -100,7 +100,14 @@ extension PIPViewModel: AVPictureInPictureControllerDelegate {
         guard let vc = pictureInPictureController.contentSource?.activeVideoCallContentViewController, let pipSourceView = backgroundView.pipSourceView else { return }
         
         vc.view.addSubview(pipSourceView)
-        pipSourceView.frame = vc.view.bounds
+        pipSourceView.translatesAutoresizingMaskIntoConstraints = false
+        NSLayoutConstraint.activate([
+            pipSourceView.leadingAnchor.constraint(equalTo: vc.view.leadingAnchor),
+            pipSourceView.trailingAnchor.constraint(equalTo: vc.view.trailingAnchor),
+            pipSourceView.topAnchor.constraint(equalTo: vc.view.topAnchor),
+            pipSourceView.bottomAnchor.constraint(equalTo: vc.view.bottomAnchor)
+        ])
+        vc.view.layoutIfNeeded()
     }
     
     func pictureInPictureControllerDidStopPictureInPicture(_ pictureInPictureController: AVPictureInPictureController) {
@@ -108,6 +115,9 @@ extension PIPViewModel: AVPictureInPictureControllerDelegate {
         
         pipSourceView.removeFromSuperview()
         backgroundView.addSubview(pipSourceView)
+        pipSourceView.frame = backgroundView.bounds
+        pipSourceView.setNeedsLayout()
+        pipSourceView.layoutIfNeeded()
     }
 }
 
diff --git a/iOS/APIExample-SwiftUI/APIExample-SwiftUI/Examples/Advanced/PictureInPicture/SDKRender/SDKRenderExample.swift b/iOS/APIExample-SwiftUI/APIExample-SwiftUI/Examples/Advanced/PictureInPicture/SDKRender/SDKRenderExample.swift
index 2e35b343e..64641b951 100644
--- a/iOS/APIExample-SwiftUI/APIExample-SwiftUI/Examples/Advanced/PictureInPicture/SDKRender/SDKRenderExample.swift
+++ b/iOS/APIExample-SwiftUI/APIExample-SwiftUI/Examples/Advanced/PictureInPicture/SDKRender/SDKRenderExample.swift
@@ -13,7 +13,7 @@ struct SDKRenderMockContainerView: View {
     
     var body: some View {
         HStack {
-            localView.frame(maxWidth: 200)
+            localView
             ForEach(viewModel.remoteRenderViews) { view in
                 view
             }
@@ -77,7 +77,6 @@ struct SDKRenderExample: View {
             sdkRenderViewModel.cleanRtc()
         }
         .frame(maxWidth: .infinity, maxHeight: .infinity)
-        .adaptiveBackground(Color.orange)
     }
 }
 
diff --git a/iOS/APIExample-SwiftUI/Podfile b/iOS/APIExample-SwiftUI/Podfile
index 60484cca8..f7f1d4320 100644
--- a/iOS/APIExample-SwiftUI/Podfile
+++ b/iOS/APIExample-SwiftUI/Podfile
@@ -2,7 +2,7 @@
 # platform :ios, '9.0'
 
 def common_pods
-  pod 'AgoraRtcEngine_iOS', '4.5.0'
+  pod 'AgoraRtcEngine_iOS', '4.5.1'
 #  pod 'sdk', :path => 'sdk.podspec'
 end
 
@@ -33,5 +33,5 @@ end
 #end
 
 pre_install do |installer|
-#  system("sh .download_script.sh 4.5.0 true")
+#  system("sh .download_script.sh 4.5.1 true")
 end
diff --git a/iOS/APIExample/APIExample/Examples/Advanced/LiveStreaming/Base.lproj/LiveStreaming.storyboard b/iOS/APIExample/APIExample/Examples/Advanced/LiveStreaming/Base.lproj/LiveStreaming.storyboard
index d433b379b..e70aad271 100644
--- a/iOS/APIExample/APIExample/Examples/Advanced/LiveStreaming/Base.lproj/LiveStreaming.storyboard
+++ b/iOS/APIExample/APIExample/Examples/Advanced/LiveStreaming/Base.lproj/LiveStreaming.storyboard
@@ -42,7 +42,7 @@
                                         </connections>
                                     </switch>
                                     <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="system" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="Q0N-nV-bez">
-                                        <rect key="frame" x="28" y="82" width="119.5" height="34.5"/>
+                                        <rect key="frame" x="28" y="82" width="119.5" height="40.5"/>
                                         <state key="normal" title="Button"/>
                                         <buttonConfiguration key="configuration" style="plain" title="default color"/>
                                         <connections>
@@ -50,7 +50,7 @@
                                         </connections>
                                     </button>
                                     <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="system" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="S19-UR-C2c">
-                                        <rect key="frame" x="28" y="184" width="146" height="34.5"/>
+                                        <rect key="frame" x="28" y="184" width="146" height="40.5"/>
                                         <state key="normal" title="Button"/>
                                         <buttonConfiguration key="configuration" style="plain" title="preload channel"/>
                                         <connections>
@@ -65,7 +65,7 @@
                                         </connections>
                                     </button>
                                     <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="leading" contentVerticalAlignment="center" buttonType="system" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="ug1-fz-GYz">
-                                        <rect key="frame" x="30" y="235" width="166" height="35"/>
+                                        <rect key="frame" x="30" y="241" width="166" height="35"/>
                                         <constraints>
                                             <constraint firstAttribute="height" constant="35" id="2n6-ch-vfJ"/>
                                             <constraint firstAttribute="width" constant="166" id="6sx-zg-CJ4"/>
@@ -77,7 +77,7 @@
                                         </connections>
                                     </button>
                                     <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="system" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="ZB2-jf-zOV">
-                                        <rect key="frame" x="179" y="235" width="139" height="35"/>
+                                        <rect key="frame" x="179" y="235" width="139" height="40.5"/>
                                         <state key="normal" title="Button"/>
                                         <buttonConfiguration key="configuration" style="plain" title="Video Scenario"/>
                                         <connections>
@@ -158,14 +158,6 @@
                                     <action selector="onTapCodingSegment:" destination="jxp-ZN-2yG" eventType="valueChanged" id="Bbt-xf-zZg"/>
                                 </connections>
                             </segmentedControl>
-                            <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="system" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="dZm-Rf-imt">
-                                <rect key="frame" x="202" y="433.5" width="124.5" height="34.5"/>
-                                <state key="normal" title="Button"/>
-                                <buttonConfiguration key="configuration" style="filled" title="CameraFocal"/>
-                                <connections>
-                                    <action selector="onTapCameraFocalButton:" destination="jxp-ZN-2yG" eventType="touchUpInside" id="SK3-MU-0lJ"/>
-                                </connections>
-                            </button>
                             <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="eGT-sd-I3g">
                                 <rect key="frame" x="141" y="512" width="183" height="36"/>
                                 <subviews>
@@ -194,7 +186,7 @@
                                 </constraints>
                             </view>
                             <view alpha="0.80000001192092896" contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="CN0-n0-1Gh" userLabel="B帧">
-                                <rect key="frame" x="21" y="479.5" width="108" height="35"/>
+                                <rect key="frame" x="21" y="473.5" width="108" height="35"/>
                                 <subviews>
                                     <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" misplaced="YES" text="B帧" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="m3M-Tw-nzd">
                                         <rect key="frame" x="8" y="-2" width="37" height="40"/>
@@ -224,7 +216,7 @@
                                 </constraints>
                             </view>
                             <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="system" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="pha-4w-IfR">
-                                <rect key="frame" x="21" y="388" width="372" height="35"/>
+                                <rect key="frame" x="21" y="382" width="372" height="35"/>
                                 <constraints>
                                     <constraint firstAttribute="height" constant="35" id="LLi-Kw-ErI"/>
                                 </constraints>
@@ -235,7 +227,7 @@
                                 </connections>
                             </button>
                             <view alpha="0.80000001192092896" contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="v58-rP-HKa" userLabel="CenterStage">
-                                <rect key="frame" x="21" y="434.5" width="170.5" height="35"/>
+                                <rect key="frame" x="21" y="428.5" width="170.5" height="35"/>
                                 <subviews>
                                     <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" horizontalCompressionResistancePriority="751" text="CenterStage" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="7gz-OE-0O4">
                                         <rect key="frame" x="7" y="-2" width="91.5" height="40"/>
@@ -319,7 +311,7 @@
                                 </constraints>
                             </view>
                             <view alpha="0.80000001192092896" contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="i5U-ta-1hj" userLabel="watermark">
-                                <rect key="frame" x="20" y="524.5" width="108" height="35"/>
+                                <rect key="frame" x="20" y="518.5" width="108" height="35"/>
                                 <subviews>
                                     <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" misplaced="YES" text="水印" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="nSq-Vu-o9H">
                                         <rect key="frame" x="8" y="-2" width="37" height="40"/>
@@ -376,7 +368,7 @@
                                 </constraints>
                             </view>
                             <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="system" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="w4q-aT-JBc">
-                                <rect key="frame" x="20" y="569.5" width="93.5" height="34.5"/>
+                                <rect key="frame" x="20" y="563.5" width="93.5" height="40.5"/>
                                 <color key="backgroundColor" name="btnPanelBackground"/>
                                 <constraints>
                                     <constraint firstAttribute="width" relation="greaterThanOrEqual" constant="80" id="Xdc-MD-QxT"/>
@@ -394,7 +386,7 @@
                                 </connections>
                             </button>
                             <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="system" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="lpn-6Z-VV3">
-                                <rect key="frame" x="127" y="569" width="93.5" height="35"/>
+                                <rect key="frame" x="127" y="563" width="93.5" height="35"/>
                                 <color key="backgroundColor" name="btnPanelBackground"/>
                                 <constraints>
                                     <constraint firstAttribute="height" constant="35" id="EJL-Hg-zEY"/>
@@ -484,16 +476,13 @@
                             <constraint firstItem="Uwe-Fi-04a" firstAttribute="leading" secondItem="CeS-QQ-Djo" secondAttribute="leading" constant="20" id="0oI-Iz-1eG"/>
                             <constraint firstItem="w4q-aT-JBc" firstAttribute="leading" secondItem="CeS-QQ-Djo" secondAttribute="leading" constant="20" id="0za-L8-AHw"/>
                             <constraint firstItem="XSO-cE-x5n" firstAttribute="top" secondItem="CeS-QQ-Djo" secondAttribute="top" constant="10" id="1HU-w7-YYi"/>
-                            <constraint firstItem="dZm-Rf-imt" firstAttribute="top" secondItem="pha-4w-IfR" secondAttribute="bottom" constant="10.5" id="66O-Xr-Aml"/>
                             <constraint firstItem="q9v-1n-ZYf" firstAttribute="top" secondItem="CeS-QQ-Djo" secondAttribute="top" id="7Ra-XK-uPS"/>
-                            <constraint firstItem="b7R-QN-CCh" firstAttribute="top" secondItem="dZm-Rf-imt" secondAttribute="bottom" constant="7" id="AdA-I4-fg9"/>
                             <constraint firstItem="v58-rP-HKa" firstAttribute="top" secondItem="pha-4w-IfR" secondAttribute="bottom" constant="11.5" id="Avv-nK-e5T"/>
                             <constraint firstItem="pha-4w-IfR" firstAttribute="top" secondItem="tOf-AP-HSe" secondAttribute="bottom" constant="15" id="B1H-mT-8wd"/>
                             <constraint firstItem="sOi-ZR-6Oj" firstAttribute="top" secondItem="b7R-QN-CCh" secondAttribute="bottom" constant="45" id="Fn8-02-ePb"/>
                             <constraint firstItem="w4q-aT-JBc" firstAttribute="top" secondItem="i5U-ta-1hj" secondAttribute="bottom" constant="10" id="GpK-P5-Dz2"/>
                             <constraint firstItem="Uwe-Fi-04a" firstAttribute="top" secondItem="Wts-5Z-p7a" secondAttribute="bottom" constant="10" id="JJa-xD-z27"/>
                             <constraint firstItem="lpn-6Z-VV3" firstAttribute="leading" secondItem="w4q-aT-JBc" secondAttribute="trailing" constant="13.5" id="JOL-0B-Kgk"/>
-                            <constraint firstItem="dZm-Rf-imt" firstAttribute="leading" secondItem="v58-rP-HKa" secondAttribute="trailing" constant="10.5" id="LaR-vk-DTf"/>
                             <constraint firstItem="q9v-1n-ZYf" firstAttribute="leading" secondItem="CeS-QQ-Djo" secondAttribute="leading" id="LsZ-af-6Wt"/>
                             <constraint firstItem="q9v-1n-ZYf" firstAttribute="leading" secondItem="UFF-wU-Wze" secondAttribute="trailing" constant="-323" id="M4O-C8-oP4"/>
                             <constraint firstItem="CeS-QQ-Djo" firstAttribute="bottom" secondItem="q9v-1n-ZYf" secondAttribute="bottom" id="Ne5-if-Q54"/>
@@ -529,7 +518,6 @@
                         </constraints>
                     </view>
                     <connections>
-                        <outlet property="CameraFocalButton" destination="dZm-Rf-imt" id="owk-Ou-NSb"/>
                         <outlet property="bFrameContainer" destination="CN0-n0-1Gh" id="ILN-XR-Efd"/>
                         <outlet property="backgroundVideoContainer" destination="q9v-1n-ZYf" id="ADa-RX-kZg"/>
                         <outlet property="cameraStabilizationButton" destination="pha-4w-IfR" id="5Q8-iF-7uG"/>
@@ -578,7 +566,7 @@
             <color white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
         </systemColor>
         <systemColor name="systemGray6Color">
-            <color red="0.94901960780000005" green="0.94901960780000005" blue="0.96862745100000003" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+            <color red="0.94901960784313721" green="0.94901960784313721" blue="0.96862745098039216" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
         </systemColor>
     </resources>
 </document>
diff --git a/iOS/APIExample/APIExample/Examples/Advanced/LiveStreaming/LiveStreaming.swift b/iOS/APIExample/APIExample/Examples/Advanced/LiveStreaming/LiveStreaming.swift
index afe8e60db..5a28cd15d 100644
--- a/iOS/APIExample/APIExample/Examples/Advanced/LiveStreaming/LiveStreaming.swift
+++ b/iOS/APIExample/APIExample/Examples/Advanced/LiveStreaming/LiveStreaming.swift
@@ -197,7 +197,6 @@ class LiveStreamingMain: BaseViewController {
     @IBOutlet weak var codingSegment: UISegmentedControl!
     @IBOutlet weak var videoImageContainer: UIView!
     @IBOutlet weak var centerStageContainerView: UIView!
-    @IBOutlet weak var CameraFocalButton: UIButton!
     @IBOutlet weak var cameraStabilizationButton: UIButton?
     @IBOutlet weak var localRenderTextField: UITextField?
     @IBOutlet weak var remoteRenderTextField: UITextField?
@@ -216,7 +215,6 @@ class LiveStreamingMain: BaseViewController {
             codingSegment.isHidden = role == .audience
             videoImageContainer.isHidden = role == .audience
             centerStageContainerView.isHidden = role == .audience
-            CameraFocalButton.isHidden = role == .audience
             localRenderTextField?.isHidden = role == .audience
             cameraStabilizationButton?.isHidden = role == .audience
             takeLocalSnapshot.isHidden = role == .audience
@@ -262,10 +260,6 @@ class LiveStreamingMain: BaseViewController {
             agoraKit.delegate = self
         }
         
-        if let key = configs["cameraKey"] as? String, key.isEmpty == false {
-            CameraFocalButton.setTitle(key, for: .normal)
-        }
-        
         if let isFirstFrame = configs["isFirstFrame"] as? Bool, isFirstFrame == true {
             agoraKit.enableInstantMediaRendering()
             agoraKit.startMediaRenderingTracing()
@@ -368,27 +362,6 @@ class LiveStreamingMain: BaseViewController {
         self.view.endEditing(true)
     }
     
-    @IBAction func onTapCameraFocalButton(_ sender: UIButton) {
-        let infos = agoraKit.queryCameraFocalLengthCapability()
-        let pickerView = PickerView()
-        let params = infos?.flatMap({ $0.value })
-        pickerView.dataArray = params?.map({ $0.key })
-        AlertManager.show(view: pickerView, alertPostion: .bottom)
-        pickerView.pickerViewSelectedValueClosure = { [weak self] key in
-            guard let self = self else { return }
-            let type = params?.first(where: { $0.key == key })?.value ?? .default
-            let config = AgoraCameraCapturerConfiguration()
-            config.cameraFocalLengthType = type
-            config.cameraDirection = key.contains("Front camera".localized) ? .front : .rear
-            if config.cameraDirection != self.cameraDirection {
-                self.agoraKit.switchCamera()
-            }
-            sender.setTitle(key, for: .normal)
-            self.agoraKit.setCameraCapturerConfiguration(config)
-            self.cameraDirection = config.cameraDirection
-        }
-    }
-    
     @IBAction func onTapCenterStage(_ sender: UISwitch) {
         if agoraKit.isCameraCenterStageSupported() {
             agoraKit.enableCameraCenterStage(sender.isOn)
diff --git a/iOS/APIExample/Podfile b/iOS/APIExample/Podfile
index 54f98ffb2..1368b5569 100644
--- a/iOS/APIExample/Podfile
+++ b/iOS/APIExample/Podfile
@@ -4,7 +4,7 @@
 #source 'https://mirrors.tuna.tsinghua.edu.cn/git/CocoaPods/Specs.git'
 
 def common_pods
-  pod 'AgoraRtcEngine_iOS', '4.5.0'
+  pod 'AgoraRtcEngine_iOS', '4.5.1'
   #pod 'sdk', :path => 'sdk.podspec'
 end
   
@@ -22,9 +22,9 @@ target 'APIExample' do
   pod 'SwiftLint', '~> 0.53.0'
   pod 'SnapKit', '~> 5.7.0'
 
-#  pod 'SenseLib', :path => 'sense.podspec'
-#  pod 'bytedEffect', :path => 'bytedEffect.podspec'
-#  pod 'fuLib', :path => 'fu.podspec'
+  #pod 'SenseLib', :path => 'sense.podspec'
+  #pod 'bytedEffect', :path => 'bytedEffect.podspec'
+  #pod 'fuLib', :path => 'fu.podspec'
 end
 
 target 'Agora-ScreenShare-Extension' do
@@ -39,5 +39,5 @@ target 'SimpleFilter' do
 end
 
 pre_install do |installer|
-#  system("sh .download_script.sh 4.5.0 true")
+#  system("sh .download_script.sh 4.5.1 true")
 end
diff --git a/macOS/Podfile b/macOS/Podfile
index f4319d337..f4e190690 100644
--- a/macOS/Podfile
+++ b/macOS/Podfile
@@ -2,7 +2,7 @@
 
 
 def common_pods
-  pod 'AgoraRtcEngine_macOS', '4.5.0'
+  pod 'AgoraRtcEngine_macOS', '4.5.1'
 #  pod 'sdk', :path => 'sdk.podspec'
 end
 
diff --git a/windows/APIExample/install.ps1 b/windows/APIExample/install.ps1
index 5218ed440..369c9526e 100644
--- a/windows/APIExample/install.ps1
+++ b/windows/APIExample/install.ps1
@@ -1,4 +1,4 @@
-$agora_sdk = 'https://download.agora.io/sdk/release/Agora_Native_SDK_for_Windows_v4.5.0_FULL.zip'
+$agora_sdk = 'https://download.agora.io/sdk/release/Agora_Native_SDK_for_Windows_v4.5.1_FULL.zip'
 $ThirdPartysrc = 'https://fullapp.oss-cn-beijing.aliyuncs.com/API-Examples/ThirdParty.zip'
 $ThirdPartydes = 'ThirdParty.zip'
 $agora_des = 'AgoraSdk.zip'