diff --git a/3rdparty/CMakeLists.txt b/3rdparty/CMakeLists.txt
--- a/3rdparty/CMakeLists.txt
+++ b/3rdparty/CMakeLists.txt
@@ -163,12 +163,14 @@
 
 # this list must be dependency-ordered
 if (ENABLE_PYTHON_DEPS OR NOT MINGW)
-	add_subdirectory( ext_python )
+	#add_subdirectory( ext_python )
 endif ()
 if (MINGW)
     add_subdirectory( ext_patch )
     add_subdirectory( ext_png2ico )
 endif ()
+add_subdirectory( ext_de265 )
+add_subdirectory( ext_heif )
 add_subdirectory( ext_lzma )
 add_subdirectory( ext_iconv )
 add_subdirectory( ext_gettext )
diff --git a/3rdparty/ext_de265/CMakeLists.txt b/3rdparty/ext_de265/CMakeLists.txt
new file mode 100644
--- /dev/null
+++ b/3rdparty/ext_de265/CMakeLists.txt
@@ -0,0 +1,14 @@
+SET(PREFIX_ext_de265 "${EXTPREFIX}" )
+ExternalProject_Add( ext_de265
+	DOWNLOAD_DIR ${EXTERNALS_DOWNLOAD_DIR}
+	URL https://github.com/strukturag/libde265/releases/download/v1.0.3/libde265-1.0.3.tar.gz
+
+	INSTALL_DIR ${PREFIX_ext_de265}
+
+	PATCH_COMMAND ${PATCH_COMMAND} -p1 -i ${CMAKE_CURRENT_SOURCE_DIR}/libde265.diff
+	CMAKE_ARGS -DCMAKE_INSTALL_PREFIX=${PREFIX_ext_de265} -DCMAKE_BUILD_TYPE=${GLOBAL_BUILD_TYPE} ${GLOBAL_PROFILE} -DBUILD_utils=OFF
+
+        
+	UPDATE_COMMAND ""
+	BUILD_IN_SOURCE 1
+)
diff --git a/3rdparty/ext_de265/libde265.diff b/3rdparty/ext_de265/libde265.diff
new file mode 100644
--- /dev/null
+++ b/3rdparty/ext_de265/libde265.diff
@@ -0,0 +1,21 @@
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index af2001d7..b06c2a9e 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -67,6 +67,16 @@ else()
+   set(LIBDE265_LIBRARY_NAME libde265)
+ endif()
+ 
++# Generate pkg-config file
++set(prefix "${CMAKE_INSTALL_PREFIX}")
++set(exec_prefix "${CMAKE_INSTALL_PREFIX}")
++set(libdir "${CMAKE_INSTALL_FULL_LIBDIR}")
++set(includedir "${CMAKE_INSTALL_FULL_INCLUDEDIR}")
++configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libde265.pc.in
++               ${CMAKE_CURRENT_BINARY_DIR}/libde265.pc)
++install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libde265.pc
++        DESTINATION "${CMAKE_INSTALL_FULL_LIBDIR}/pkgconfig")
++
+ add_subdirectory (libde265)
+ add_subdirectory (dec265)
+ add_subdirectory (enc265)
diff --git a/3rdparty/ext_heif/CMakeLists.txt b/3rdparty/ext_heif/CMakeLists.txt
new file mode 100644
--- /dev/null
+++ b/3rdparty/ext_heif/CMakeLists.txt
@@ -0,0 +1,15 @@
+SET(PREFIX_ext_heif "${EXTPREFIX}" )
+ExternalProject_Add( ext_heif
+	DOWNLOAD_DIR ${EXTERNALS_DOWNLOAD_DIR}
+	URL https://github.com/strukturag/libheif/releases/download/v1.4.0/libheif-1.4.0.tar.gz
+
+	INSTALL_DIR ${PREFIX_ext_heif}
+
+	PATCH_COMMAND ${PATCH_COMMAND} -p1 -i ${CMAKE_CURRENT_SOURCE_DIR}/libheif.diff
+	CMAKE_ARGS -DCMAKE_INSTALL_PREFIX=${PREFIX_ext_heif} -DCMAKE_BUILD_TYPE=${GLOBAL_BUILD_TYPE} ${GLOBAL_PROFILE} -DBUILD_utils=OFF
+
+        
+	UPDATE_COMMAND ""
+
+	DEPENDS ext_de265
+)
diff --git a/3rdparty/ext_heif/libheif.diff b/3rdparty/ext_heif/libheif.diff
new file mode 100644
--- /dev/null
+++ b/3rdparty/ext_heif/libheif.diff
@@ -0,0 +1,21 @@
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 4f5c49c..d74b23c 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -61,6 +61,16 @@ else()
+   set(LIBHEIF_LIBRARY_NAME libheif)
+ endif()
+ 
++# Generate pkg-config file
++set(prefix "${CMAKE_INSTALL_PREFIX}")
++set(exec_prefix "${CMAKE_INSTALL_PREFIX}")
++set(libdir "${CMAKE_INSTALL_FULL_LIBDIR}")
++set(includedir "${CMAKE_INSTALL_FULL_INCLUDEDIR}")
++configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libheif.pc.in
++               ${CMAKE_CURRENT_BINARY_DIR}/libheif.pc)
++install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libheif.pc
++        DESTINATION "${CMAKE_INSTALL_FULL_LIBDIR}/pkgconfig")
++
+ add_subdirectory (examples)
+ add_subdirectory (libheif)
+ add_subdirectory (gdk-pixbuf)