diff --git a/build_scripts/Windows/build-libs/Makefile b/build_scripts/Windows/build-libs/Makefile
index 5065d7620..93a845e82 100755
--- a/build_scripts/Windows/build-libs/Makefile
+++ b/build_scripts/Windows/build-libs/Makefile
@@ -4,7 +4,7 @@ MINIUPNPC_VERSION=2.0
 OPENSSL_VERSION=1.0.2k
 SPEEX_VERSION=1.2rc2
 SPEEXDSP_VERSION=1.2rc3
-OPENCV_VERSION=2.4.13
+OPENCV_VERSION=3.2.0
 LIBXML2_VERSION=2.9.3
 LIBXSLT_VERSION=1.1.28
 CURL_VERSION=7.46.0
@@ -97,7 +97,7 @@ libs/miniupnpc-$(MINIUPNPC_VERSION): $(DOWNLOAD_PATH)/miniupnpc-$(MINIUPNPC_VERS
 	rm -r -f libs/miniupnpc-*
 	tar xvf $(DOWNLOAD_PATH)/miniupnpc-$(MINIUPNPC_VERSION).tar.gz
 	# build
-	cd miniupnpc-$(MINIUPNPC_VERSION) && CC=gcc && export CC && make -f Makefile.mingw init libminiupnpc.a miniupnpc.dll
+	cd miniupnpc-$(MINIUPNPC_VERSION) && export CC=gcc && make -f Makefile.mingw init libminiupnpc.a miniupnpc.dll
 	# copy files
 	mkdir -p libs/miniupnpc-$(MINIUPNPC_VERSION).tmp/include/miniupnpc
 	cp miniupnpc-$(MINIUPNPC_VERSION)/*.h libs/miniupnpc-$(MINIUPNPC_VERSION).tmp/include/miniupnpc/
@@ -178,7 +178,7 @@ libs/speexdsp-$(SPEEXDSP_VERSION): $(DOWNLOAD_PATH)/speexdsp-$(SPEEXDSP_VERSION)
 opencv: libs/opencv-$(OPENCV_VERSION)
 
 $(DOWNLOAD_PATH)/opencv-$(OPENCV_VERSION).tar.gz:
-	wget --no-check-certificate https://github.com/Itseez/opencv/archive/$(OPENCV_VERSION).tar.gz -O $(DOWNLOAD_PATH)/opencv-$(OPENCV_VERSION).tar.gz
+	wget --no-check-certificate https://github.com/opencv/opencv/archive/$(OPENCV_VERSION).tar.gz -O $(DOWNLOAD_PATH)/opencv-$(OPENCV_VERSION).tar.gz
 
 libs/opencv-$(OPENCV_VERSION): $(DOWNLOAD_PATH)/opencv-$(OPENCV_VERSION).tar.gz
 	# prepare
@@ -285,7 +285,7 @@ libs/sqlcipher-$(SQLCIPHER_VERSION): $(DOWNLOAD_PATH)/tcl$(TCL_VERSION)-src.tar.
 	mkdir -p tcl$(TCL_VERSION)/lib
 	ln -s `pwd`/tcl$(TCL_VERSION)/library `pwd`/tcl$(TCL_VERSION)/lib/tcl8.6
 	# build
-	cd sqlcipher-$(SQLCIPHER_VERSION) && PATH=.:$$PATH:`pwd`/../tcl$(TCL_VERSION)/build && LIBS="-L`pwd`/../libs/openssl-$(OPENSSL_VERSION)/lib -lgdi32 $$LIBS" && export LIBS && ./configure --disable-shared --enable-static --enable-tempstore=yes CFLAGS="-DSQLITE_HAS_CODEC -I`pwd`/../libs/openssl-$(OPENSSL_VERSION)/include -I`pwd`/../tcl$(TCL_VERSION)/generic" LDFLAGS="-L`pwd`/../libs/openssl-$(OPENSSL_VERSION)/lib -lcrypto -lgdi32" --with-tcl="`pwd`/../tcl$(TCL_VERSION)/build" && make install prefix="`pwd`/install"
+	cd sqlcipher-$(SQLCIPHER_VERSION) && PATH=.:$$PATH:`pwd`/../tcl$(TCL_VERSION)/build && export LIBS="-L`pwd`/../libs/openssl-$(OPENSSL_VERSION)/lib -lgdi32 $$LIBS" && ./configure --disable-shared --enable-static --enable-tempstore=yes CFLAGS="-DSQLITE_HAS_CODEC -I`pwd`/../libs/openssl-$(OPENSSL_VERSION)/include -I`pwd`/../tcl$(TCL_VERSION)/generic" LDFLAGS="-L`pwd`/../libs/openssl-$(OPENSSL_VERSION)/lib -lcrypto -lgdi32" --with-tcl="`pwd`/../tcl$(TCL_VERSION)/build" && make install prefix="`pwd`/install"
 	# copy files
 	mkdir -p libs/sqlcipher-$(SQLCIPHER_VERSION).tmp/include
 	cp -r sqlcipher-$(SQLCIPHER_VERSION)/install/include/* libs/sqlcipher-$(SQLCIPHER_VERSION).tmp/include/
diff --git a/build_scripts/Windows/build-libs/build-libs.bat b/build_scripts/Windows/build-libs/build-libs.bat
index 9dac5c8b5..58b400a2f 100644
--- a/build_scripts/Windows/build-libs/build-libs.bat
+++ b/build_scripts/Windows/build-libs/build-libs.bat
@@ -24,8 +24,7 @@ call "%EnvPath%\env-msys.bat"
 if errorlevel 1 goto error_env
 
 :: Check MSYS environment
-set MSYSSH=%EnvMSYSPath%\msys\1.0\bin\sh.exe
-if not exist "%MSYSSH%" %cecho% error "Please install MSYS first." & exit /B 1
+if not exist "%EnvMSYSSH%" %cecho% error "Please install MSYS first." & exit /B 1
 
 :: Initialize environment
 call "%~dp0env.bat"
@@ -36,7 +35,7 @@ call "%ToolsPath%\msys-path.bat" "%BuildLibsPath%" MSYSBuildLibsPath
 
 if not exist "%BuildLibsPath%" mkdir "%BuildLibsPath%"
 
-"%MSYSSH%" --login -i -c "cd "%MSYSBuildLibsPath%" && make -f %MSYSCurPath%/makefile %MakeParam% %MakeTask%"
+%EnvMSYSCmd% "cd "%MSYSBuildLibsPath%" && make -f %MSYSCurPath%/makefile %MakeParam% %MakeTask%"
 
 exit /B %ERRORLEVEL%
 
diff --git a/build_scripts/Windows/env/env-msys.bat b/build_scripts/Windows/env/env-msys.bat
index 9b5421032..cc92f7495 100644
--- a/build_scripts/Windows/env/env-msys.bat
+++ b/build_scripts/Windows/env/env-msys.bat
@@ -8,7 +8,14 @@ if errorlevel 1 goto error_env
 set EnvMSYSPath=%EnvRootPath%\msys
 
 call "%~dp0tools\prepare-msys.bat" %1
-exit /B %ERRORLEVEL%
+if errorlevel 1 exit /B %ERRORLEVEL%
+
+set EnvMSYSSH=%EnvMSYSPath%\msys\1.0\bin\sh.exe
+if not exist "%EnvMSYSSH%" if errorlevel 1 goto error_env
+
+set EnvMSYSCmd="%EnvMSYSSH%" --login -i -c
+
+exit /B 0
 
 :error_env
 echo Failed to initialize environment.
diff --git a/plugins/VOIP/VOIP.pro b/plugins/VOIP/VOIP.pro
index 5fac6b780..c178332a0 100644
--- a/plugins/VOIP/VOIP.pro
+++ b/plugins/VOIP/VOIP.pro
@@ -35,7 +35,7 @@ win32 {
 	DEPENDPATH += . $$INC_DIR
 	INCLUDEPATH += . $$INC_DIR
 
-	OPENCV_VERSION = "2413"
+	OPENCV_VERSION = "320"
 	USE_PRECOMPILED_LIBS =
 	for(lib, LIB_DIR) {
 #message(Scanning $$lib)
@@ -44,7 +44,7 @@ win32 {
 				message(Get pre-compiled opencv $$OPENCV_VERSION libraries here:)
 				message($$lib)
 				LIBS += -L"$$lib/opencv"
-				LIBS += -lopencv_core$$OPENCV_VERSION -lopencv_highgui$$OPENCV_VERSION -lopencv_imgproc$$OPENCV_VERSION
+				LIBS += -lopencv_core$$OPENCV_VERSION -lopencv_highgui$$OPENCV_VERSION -lopencv_imgproc$$OPENCV_VERSION -lopencv_videoio$$OPENCV_VERSION -lopencv_imgcodecs$$OPENCV_VERSION -llibwebp
 				USE_PRECOMPILED_LIBS = 1
 			}
 		}