diff --git a/aegisub/build/Aegisub/Aegisub.xml b/aegisub/build/Aegisub/Aegisub.xml
index d01cd8af7..a081280cb 100644
--- a/aegisub/build/Aegisub/Aegisub.xml
+++ b/aegisub/build/Aegisub/Aegisub.xml
@@ -248,4 +248,12 @@
     DisplayName="libass source path"
     Description="Location of libass source code."
     />
+
+  <StringProperty
+    Subtype="folder"
+    Name="ZlibSrcDir"
+    Category="Paths"
+    DisplayName="zlib source path"
+    Description="Location of zlib source code. Required for FFMS2."
+    />
 </Rule>
diff --git a/aegisub/build/zlib/zlib.vcxproj b/aegisub/build/zlib/zlib.vcxproj
new file mode 100644
index 000000000..3e9a4ee2b
--- /dev/null
+++ b/aegisub/build/zlib/zlib.vcxproj
@@ -0,0 +1,55 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <!-- VC boilerplate -->
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{10F22A5A-DD9E-44A1-BA2E-2A9A7C78B0EE}</ProjectGuid>
+    <RootNamespace>zlib</RootNamespace>
+  </PropertyGroup>
+
+  <!-- Aegisub project configuration -->
+  <PropertyGroup Label="AegisubConfiguration">
+    <AegisubProjectType>lib</AegisubProjectType>
+  </PropertyGroup>
+
+  <ImportGroup Label="PropertySheets">
+    <Import Project="$(MSBuildThisFileDirectory)..\aegisub.props" />
+  </ImportGroup>
+
+  <!-- Project specific configuration -->
+  <ItemDefinitionGroup>
+    <ClCompile>
+      <AdditionalIncludeDirectories>$(ZlibSrcDir)\</AdditionalIncludeDirectories>
+      <DisableSpecificWarnings>4996;%(DisableSpecificWarnings)</DisableSpecificWarnings>
+    </ClCompile>
+  </ItemDefinitionGroup>
+
+  <!-- Source files -->
+  <ItemGroup>
+    <InstallHeader Include="$(ZlibSrcDir)\zlib.h" />
+    <InstallHeader Include="$(ZlibSrcDir)\zconf.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="$(ZlibSrcDir)\*.c" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="$(ZlibSrcDir)\*.h" />
+  </ItemGroup>
+</Project>