diff --git a/ports/assimp/CONTROL b/ports/assimp/CONTROL
index 9666a06b3be..f6e6eaaff2f 100644
--- a/ports/assimp/CONTROL
+++ b/ports/assimp/CONTROL
@@ -1,4 +1,4 @@
 Source: assimp
-Version: 4.0.1-2
+Version: 4.0.1-3
 Description: The Open Asset import library
 Build-Depends: zlib
diff --git a/ports/assimp/portfile.cmake b/ports/assimp/portfile.cmake
index 49630024084..583738e16a2 100644
--- a/ports/assimp/portfile.cmake
+++ b/ports/assimp/portfile.cmake
@@ -16,6 +16,8 @@ vcpkg_apply_patches(
 )
 
 file(REMOVE ${SOURCE_PATH}/cmake-modules/FindZLIB.cmake)
+set(VCPKG_C_FLAGS "${VCPKG_C_FLAGS} -D_CRT_SECURE_NO_WARNINGS")
+set(VCPKG_CXX_FLAGS "${VCPKG_CXX_FLAGS} -D_CRT_SECURE_NO_WARNINGS")
 
 vcpkg_configure_cmake(
     SOURCE_PATH ${SOURCE_PATH}
diff --git a/ports/ffmpeg/CONTROL b/ports/ffmpeg/CONTROL
index 658c4b1f2c2..0b9d22dba8a 100644
--- a/ports/ffmpeg/CONTROL
+++ b/ports/ffmpeg/CONTROL
@@ -1,4 +1,8 @@
 Source: ffmpeg
-Version: 3.3.3
+Version: 3.3.3-1
 Description: a library to decode, encode, transcode, mux, demux, stream, filter and play pretty much anything that humans and machines have created.
   FFmpeg is the leading multimedia framework, able to decode, encode, transcode, mux, demux, stream, filter and play pretty much anything that humans and machines have created. It supports the most obscure ancient formats up to the cutting edge. No matter if they were designed by some standards committee, the community or a corporation. It is also highly portable: FFmpeg compiles, runs, and passes our testing infrastructure FATE across Linux, Mac OS X, Microsoft Windows, the BSDs, Solaris, etc. under a wide variety of build environments, machine architectures, and configurations.
+
+Feature: openssl
+Build-Depends: openssl
+Description: openssl support in ffmpeg
diff --git a/ports/ffmpeg/detect-openssl.patch b/ports/ffmpeg/detect-openssl.patch
new file mode 100644
index 00000000000..cb8a77e0ab9
--- /dev/null
+++ b/ports/ffmpeg/detect-openssl.patch
@@ -0,0 +1,25 @@
+From 18de5c60ae0a987680681d5a0602009b428504fa Mon Sep 17 00:00:00 2001
+From: Gilles Khouzam <gillesk@microsoft.com>
+Date: Mon, 19 Jun 2017 16:33:38 -0700
+Subject: [PATCH] Add better detection for Openssl on Windows.
+
+Look for libeay32 and ssleay32 as another detection mechanism
+---
+ configure | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/configure b/configure
+index a1818dc..1cf2a7c 100755
+--- a/configure
++++ b/configure
+@@ -5836,6 +5836,7 @@ enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init
+                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
+                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
+                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
++                               check_lib openssl/ssl.h SSL_library_init -llibeay32 -lssleay32 ||
+                                die "ERROR: openssl not found"; }
+ enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
+ 
+-- 
+2.10.1.windows.1
+
diff --git a/ports/ffmpeg/portfile.cmake b/ports/ffmpeg/portfile.cmake
index 8bd7abab0fd..0b3002c8705 100644
--- a/ports/ffmpeg/portfile.cmake
+++ b/ports/ffmpeg/portfile.cmake
@@ -11,6 +11,10 @@ vcpkg_download_distfile(ARCHIVE
     SHA512  1cc63bf73356f4e618c0d3572a216bdf5689f10deff56b4262f6d740b0bee5a4b3eac234f45fca3d4d2da77903a507b4fba725b76d2d2070f31b6dae9e7a2dab
 )
 vcpkg_extract_source_archive(${ARCHIVE})
+vcpkg_apply_patches(
+    SOURCE_PATH ${SOURCE_PATH}
+    PATCHES ${CMAKE_CURRENT_LIST_DIR}/detect-openssl.patch
+)
 
 vcpkg_find_acquire_program(YASM)
 get_filename_component(YASM_EXE_PATH ${YASM} DIRECTORY)
@@ -18,6 +22,8 @@ set(ENV{PATH} "$ENV{PATH};${YASM_EXE_PATH}")
 
 vcpkg_acquire_msys(MSYS_ROOT)
 set(BASH ${MSYS_ROOT}/usr/bin/bash.exe)
+set(ENV{INCLUDE} "${CURRENT_INSTALLED_DIR}/include;$ENV{INCLUDE}")
+set(ENV{LIB} "${CURRENT_INSTALLED_DIR}/lib;$ENV{LIB}")
 
 set(_csc_PROJECT_PATH ffmpeg)
 
@@ -25,8 +31,14 @@ file(REMOVE_RECURSE ${CURRENT_BUILDTREES_DIR}/${TARGET_TRIPLET}-dbg ${CURRENT_BU
 
 set(OPTIONS "--disable-ffmpeg --disable-ffprobe --disable-doc --enable-debug")
 set(OPTIONS "${OPTIONS} --enable-runtime-cpudetect")
+if("openssl" IN_LIST FEATURES)
+    set(OPTIONS "${OPTIONS} --enable-openssl")
+else()
+    set(OPTIONS "${OPTIONS} --disable-openssl")
+endif()
 
 if(VCPKG_CMAKE_SYSTEM_NAME STREQUAL "WindowsStore")
+    set(ENV{LIBPATH} "$ENV{LIBPATH};$ENV{_WKITS10}references\\windows.foundation.foundationcontract\\2.0.0.0\\;$ENV{_WKITS10}references\\windows.foundation.universalapicontract\\3.0.0.0\\")
     set(OPTIONS "${OPTIONS} --disable-programs --enable-cross-compile --target-os=win32 --arch=${VCPKG_TARGET_ARCHITECTURE}")
     set(OPTIONS "${OPTIONS} --extra-cflags=-DWINAPI_FAMILY=WINAPI_FAMILY_APP --extra-cflags=-D_WIN32_WINNT=0x0A00")
 
@@ -54,6 +66,8 @@ endif()
 set(OPTIONS_DEBUG "") # Note: --disable-optimizations can't be used due to http://ffmpeg.org/pipermail/libav-user/2013-March/003945.html
 set(OPTIONS_RELEASE "")
 
+set(OPTIONS "${OPTIONS} --extra-cflags=-DHAVE_UNISTD_H=0")
+
 if(VCPKG_LIBRARY_LINKAGE STREQUAL "dynamic")
     set(OPTIONS "${OPTIONS} --disable-static --enable-shared")
     if (VCPKG_CMAKE_SYSTEM_NAME STREQUAL "WindowsStore")