diff --git a/CHANGELOG b/CHANGELOG
index cc057a904..528ab3dbd 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,6 @@
+2020-10-13 Version: patch
+- Generated 2018-01-11 for `rtc`.
+
 2020-10-13 Version: patch
 - Release DetectSkinDisease RunMedQA.
 
diff --git a/rtc/include/alibabacloud/rtc/model/StartMPUTaskRequest.h b/rtc/include/alibabacloud/rtc/model/StartMPUTaskRequest.h
index 3d55ee8ca..764d7b256 100644
--- a/rtc/include/alibabacloud/rtc/model/StartMPUTaskRequest.h
+++ b/rtc/include/alibabacloud/rtc/model/StartMPUTaskRequest.h
@@ -36,6 +36,49 @@ namespace AlibabaCloud
 					int paneId;
 					std::string userId;
 					std::string sourceType;
+					struct Images
+					{
+						std::string url;
+						int display;
+						float x;
+						float y;
+						float width;
+						float height;
+						int zOrder;
+					};
+					std::vector<Images> images;
+					struct Texts
+					{
+						std::string text;
+						float x;
+						float y;
+						int fontType;
+						int fontSize;
+						int fontColor;
+						int zOrder;
+					};
+					std::vector<Texts> texts;
+				};
+				struct Watermarks
+				{
+					std::string url;
+					float alpha;
+					int display;
+					float x;
+					float y;
+					float width;
+					float height;
+					int zOrder;
+				};
+				struct Backgrounds
+				{
+					std::string url;
+					int display;
+					float x;
+					float y;
+					float width;
+					float height;
+					int zOrder;
 				};
 
 			public:
@@ -66,12 +109,16 @@ namespace AlibabaCloud
 				void setStreamURL(const std::string& streamURL);
 				long getVadInterval()const;
 				void setVadInterval(long vadInterval);
+				std::vector<Watermarks> getWatermarks()const;
+				void setWatermarks(const std::vector<Watermarks>& watermarks);
 				long getOwnerId()const;
 				void setOwnerId(long ownerId);
 				std::vector<std::string> getSubSpecUsers()const;
 				void setSubSpecUsers(const std::vector<std::string>& subSpecUsers);
 				std::string getAppId()const;
 				void setAppId(const std::string& appId);
+				std::vector<Backgrounds> getBackgrounds()const;
+				void setBackgrounds(const std::vector<Backgrounds>& backgrounds);
 				long getTimeStampRef()const;
 				void setTimeStampRef(long timeStampRef);
 				int getMediaEncode()const;
@@ -92,9 +139,11 @@ namespace AlibabaCloud
 				std::string showLog_;
 				std::string streamURL_;
 				long vadInterval_;
+				std::vector<Watermarks> watermarks_;
 				long ownerId_;
 				std::vector<std::string> subSpecUsers_;
 				std::string appId_;
+				std::vector<Backgrounds> backgrounds_;
 				long timeStampRef_;
 				int mediaEncode_;
 				std::string channelId_;
diff --git a/rtc/include/alibabacloud/rtc/model/UpdateMPULayoutRequest.h b/rtc/include/alibabacloud/rtc/model/UpdateMPULayoutRequest.h
index 858dc2f62..a90fe1963 100644
--- a/rtc/include/alibabacloud/rtc/model/UpdateMPULayoutRequest.h
+++ b/rtc/include/alibabacloud/rtc/model/UpdateMPULayoutRequest.h
@@ -36,6 +36,49 @@ namespace AlibabaCloud
 					int paneId;
 					std::string userId;
 					std::string sourceType;
+					struct Images
+					{
+						std::string url;
+						int display;
+						float x;
+						float y;
+						float width;
+						float height;
+						int zOrder;
+					};
+					std::vector<Images> images;
+					struct Texts
+					{
+						std::string text;
+						float x;
+						float y;
+						int fontType;
+						int fontSize;
+						int fontColor;
+						int zOrder;
+					};
+					std::vector<Texts> texts;
+				};
+				struct Watermarks
+				{
+					std::string url;
+					float alpha;
+					int display;
+					float x;
+					float y;
+					float width;
+					float height;
+					int zOrder;
+				};
+				struct Backgrounds
+				{
+					std::string url;
+					int display;
+					float x;
+					float y;
+					float width;
+					float height;
+					int zOrder;
 				};
 
 			public:
@@ -54,10 +97,14 @@ namespace AlibabaCloud
 				void setTaskId(const std::string& taskId);
 				std::string getShowLog()const;
 				void setShowLog(const std::string& showLog);
+				std::vector<Watermarks> getWatermarks()const;
+				void setWatermarks(const std::vector<Watermarks>& watermarks);
 				long getOwnerId()const;
 				void setOwnerId(long ownerId);
 				std::string getAppId()const;
 				void setAppId(const std::string& appId);
+				std::vector<Backgrounds> getBackgrounds()const;
+				void setBackgrounds(const std::vector<Backgrounds>& backgrounds);
 
             private:
 				std::vector<UserPanes> userPanes_;
@@ -66,8 +113,10 @@ namespace AlibabaCloud
 				std::vector<long> layoutIds_;
 				std::string taskId_;
 				std::string showLog_;
+				std::vector<Watermarks> watermarks_;
 				long ownerId_;
 				std::string appId_;
+				std::vector<Backgrounds> backgrounds_;
 
 			};
 		}
diff --git a/rtc/src/model/StartMPUTaskRequest.cc b/rtc/src/model/StartMPUTaskRequest.cc
index 0d3d9c108..dc1d5f5b3 100644
--- a/rtc/src/model/StartMPUTaskRequest.cc
+++ b/rtc/src/model/StartMPUTaskRequest.cc
@@ -52,6 +52,28 @@ void StartMPUTaskRequest::setUserPanes(const std::vector<UserPanes>& userPanes)
 		setParameter(userPanesObjStr + ".PaneId", std::to_string(userPanesObj.paneId));
 		setParameter(userPanesObjStr + ".UserId", userPanesObj.userId);
 		setParameter(userPanesObjStr + ".SourceType", userPanesObj.sourceType);
+		for(int dep2 = 0; dep2!= userPanesObj.images.size(); dep2++) {
+			auto imagesObj = userPanesObj.images.at(dep2);
+			std::string imagesObjStr = userPanesObjStr + "Images." + std::to_string(dep2 + 1);
+			setParameter(imagesObjStr + ".Url", imagesObj.url);
+			setParameter(imagesObjStr + ".Display", std::to_string(imagesObj.display));
+			setParameter(imagesObjStr + ".X", std::to_string(imagesObj.x));
+			setParameter(imagesObjStr + ".Y", std::to_string(imagesObj.y));
+			setParameter(imagesObjStr + ".Width", std::to_string(imagesObj.width));
+			setParameter(imagesObjStr + ".Height", std::to_string(imagesObj.height));
+			setParameter(imagesObjStr + ".ZOrder", std::to_string(imagesObj.zOrder));
+		}
+		for(int dep2 = 0; dep2!= userPanesObj.texts.size(); dep2++) {
+			auto textsObj = userPanesObj.texts.at(dep2);
+			std::string textsObjStr = userPanesObjStr + "Texts." + std::to_string(dep2 + 1);
+			setParameter(textsObjStr + ".Text", textsObj.text);
+			setParameter(textsObjStr + ".X", std::to_string(textsObj.x));
+			setParameter(textsObjStr + ".Y", std::to_string(textsObj.y));
+			setParameter(textsObjStr + ".FontType", std::to_string(textsObj.fontType));
+			setParameter(textsObjStr + ".FontSize", std::to_string(textsObj.fontSize));
+			setParameter(textsObjStr + ".FontColor", std::to_string(textsObj.fontColor));
+			setParameter(textsObjStr + ".ZOrder", std::to_string(textsObj.zOrder));
+		}
 	}
 }
 
@@ -167,6 +189,28 @@ void StartMPUTaskRequest::setVadInterval(long vadInterval)
 	setParameter("VadInterval", std::to_string(vadInterval));
 }
 
+std::vector<StartMPUTaskRequest::Watermarks> StartMPUTaskRequest::getWatermarks()const
+{
+	return watermarks_;
+}
+
+void StartMPUTaskRequest::setWatermarks(const std::vector<Watermarks>& watermarks)
+{
+	watermarks_ = watermarks;
+	for(int dep1 = 0; dep1!= watermarks.size(); dep1++) {
+		auto watermarksObj = watermarks.at(dep1);
+		std::string watermarksObjStr = "Watermarks." + std::to_string(dep1 + 1);
+		setParameter(watermarksObjStr + ".Url", watermarksObj.url);
+		setParameter(watermarksObjStr + ".Alpha", std::to_string(watermarksObj.alpha));
+		setParameter(watermarksObjStr + ".Display", std::to_string(watermarksObj.display));
+		setParameter(watermarksObjStr + ".X", std::to_string(watermarksObj.x));
+		setParameter(watermarksObjStr + ".Y", std::to_string(watermarksObj.y));
+		setParameter(watermarksObjStr + ".Width", std::to_string(watermarksObj.width));
+		setParameter(watermarksObjStr + ".Height", std::to_string(watermarksObj.height));
+		setParameter(watermarksObjStr + ".ZOrder", std::to_string(watermarksObj.zOrder));
+	}
+}
+
 long StartMPUTaskRequest::getOwnerId()const
 {
 	return ownerId_;
@@ -202,6 +246,27 @@ void StartMPUTaskRequest::setAppId(const std::string& appId)
 	setParameter("AppId", appId);
 }
 
+std::vector<StartMPUTaskRequest::Backgrounds> StartMPUTaskRequest::getBackgrounds()const
+{
+	return backgrounds_;
+}
+
+void StartMPUTaskRequest::setBackgrounds(const std::vector<Backgrounds>& backgrounds)
+{
+	backgrounds_ = backgrounds;
+	for(int dep1 = 0; dep1!= backgrounds.size(); dep1++) {
+		auto backgroundsObj = backgrounds.at(dep1);
+		std::string backgroundsObjStr = "Backgrounds." + std::to_string(dep1 + 1);
+		setParameter(backgroundsObjStr + ".Url", backgroundsObj.url);
+		setParameter(backgroundsObjStr + ".Display", std::to_string(backgroundsObj.display));
+		setParameter(backgroundsObjStr + ".X", std::to_string(backgroundsObj.x));
+		setParameter(backgroundsObjStr + ".Y", std::to_string(backgroundsObj.y));
+		setParameter(backgroundsObjStr + ".Width", std::to_string(backgroundsObj.width));
+		setParameter(backgroundsObjStr + ".Height", std::to_string(backgroundsObj.height));
+		setParameter(backgroundsObjStr + ".ZOrder", std::to_string(backgroundsObj.zOrder));
+	}
+}
+
 long StartMPUTaskRequest::getTimeStampRef()const
 {
 	return timeStampRef_;
diff --git a/rtc/src/model/UpdateMPULayoutRequest.cc b/rtc/src/model/UpdateMPULayoutRequest.cc
index 63097ebe3..40021aa75 100644
--- a/rtc/src/model/UpdateMPULayoutRequest.cc
+++ b/rtc/src/model/UpdateMPULayoutRequest.cc
@@ -41,6 +41,28 @@ void UpdateMPULayoutRequest::setUserPanes(const std::vector<UserPanes>& userPane
 		setParameter(userPanesObjStr + ".PaneId", std::to_string(userPanesObj.paneId));
 		setParameter(userPanesObjStr + ".UserId", userPanesObj.userId);
 		setParameter(userPanesObjStr + ".SourceType", userPanesObj.sourceType);
+		for(int dep2 = 0; dep2!= userPanesObj.images.size(); dep2++) {
+			auto imagesObj = userPanesObj.images.at(dep2);
+			std::string imagesObjStr = userPanesObjStr + "Images." + std::to_string(dep2 + 1);
+			setParameter(imagesObjStr + ".Url", imagesObj.url);
+			setParameter(imagesObjStr + ".Display", std::to_string(imagesObj.display));
+			setParameter(imagesObjStr + ".X", std::to_string(imagesObj.x));
+			setParameter(imagesObjStr + ".Y", std::to_string(imagesObj.y));
+			setParameter(imagesObjStr + ".Width", std::to_string(imagesObj.width));
+			setParameter(imagesObjStr + ".Height", std::to_string(imagesObj.height));
+			setParameter(imagesObjStr + ".ZOrder", std::to_string(imagesObj.zOrder));
+		}
+		for(int dep2 = 0; dep2!= userPanesObj.texts.size(); dep2++) {
+			auto textsObj = userPanesObj.texts.at(dep2);
+			std::string textsObjStr = userPanesObjStr + "Texts." + std::to_string(dep2 + 1);
+			setParameter(textsObjStr + ".Text", textsObj.text);
+			setParameter(textsObjStr + ".X", std::to_string(textsObj.x));
+			setParameter(textsObjStr + ".Y", std::to_string(textsObj.y));
+			setParameter(textsObjStr + ".FontType", std::to_string(textsObj.fontType));
+			setParameter(textsObjStr + ".FontSize", std::to_string(textsObj.fontSize));
+			setParameter(textsObjStr + ".FontColor", std::to_string(textsObj.fontColor));
+			setParameter(textsObjStr + ".ZOrder", std::to_string(textsObj.zOrder));
+		}
 	}
 }
 
@@ -101,6 +123,28 @@ void UpdateMPULayoutRequest::setShowLog(const std::string& showLog)
 	setParameter("ShowLog", showLog);
 }
 
+std::vector<UpdateMPULayoutRequest::Watermarks> UpdateMPULayoutRequest::getWatermarks()const
+{
+	return watermarks_;
+}
+
+void UpdateMPULayoutRequest::setWatermarks(const std::vector<Watermarks>& watermarks)
+{
+	watermarks_ = watermarks;
+	for(int dep1 = 0; dep1!= watermarks.size(); dep1++) {
+		auto watermarksObj = watermarks.at(dep1);
+		std::string watermarksObjStr = "Watermarks." + std::to_string(dep1 + 1);
+		setParameter(watermarksObjStr + ".Url", watermarksObj.url);
+		setParameter(watermarksObjStr + ".Alpha", std::to_string(watermarksObj.alpha));
+		setParameter(watermarksObjStr + ".Display", std::to_string(watermarksObj.display));
+		setParameter(watermarksObjStr + ".X", std::to_string(watermarksObj.x));
+		setParameter(watermarksObjStr + ".Y", std::to_string(watermarksObj.y));
+		setParameter(watermarksObjStr + ".Width", std::to_string(watermarksObj.width));
+		setParameter(watermarksObjStr + ".Height", std::to_string(watermarksObj.height));
+		setParameter(watermarksObjStr + ".ZOrder", std::to_string(watermarksObj.zOrder));
+	}
+}
+
 long UpdateMPULayoutRequest::getOwnerId()const
 {
 	return ownerId_;
@@ -123,3 +167,24 @@ void UpdateMPULayoutRequest::setAppId(const std::string& appId)
 	setParameter("AppId", appId);
 }
 
+std::vector<UpdateMPULayoutRequest::Backgrounds> UpdateMPULayoutRequest::getBackgrounds()const
+{
+	return backgrounds_;
+}
+
+void UpdateMPULayoutRequest::setBackgrounds(const std::vector<Backgrounds>& backgrounds)
+{
+	backgrounds_ = backgrounds;
+	for(int dep1 = 0; dep1!= backgrounds.size(); dep1++) {
+		auto backgroundsObj = backgrounds.at(dep1);
+		std::string backgroundsObjStr = "Backgrounds." + std::to_string(dep1 + 1);
+		setParameter(backgroundsObjStr + ".Url", backgroundsObj.url);
+		setParameter(backgroundsObjStr + ".Display", std::to_string(backgroundsObj.display));
+		setParameter(backgroundsObjStr + ".X", std::to_string(backgroundsObj.x));
+		setParameter(backgroundsObjStr + ".Y", std::to_string(backgroundsObj.y));
+		setParameter(backgroundsObjStr + ".Width", std::to_string(backgroundsObj.width));
+		setParameter(backgroundsObjStr + ".Height", std::to_string(backgroundsObj.height));
+		setParameter(backgroundsObjStr + ".ZOrder", std::to_string(backgroundsObj.zOrder));
+	}
+}
+