diff --git a/LibCmo/LibCmo.vcxproj b/LibCmo/LibCmo.vcxproj
index 748a320..cc4b588 100644
--- a/LibCmo/LibCmo.vcxproj
+++ b/LibCmo/LibCmo.vcxproj
@@ -100,7 +100,7 @@
       <SDLCheck>true</SDLCheck>
       <PreprocessorDefinitions>_CRT_SECURE_NO_WARNINGS;_CRT_NONSTDC_NO_DEPRECATE;WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
-      <AdditionalIncludeDirectories>$(ZLIB_PATH);$(FFMPEG_WIN32_HEADER_PATH);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>$(ZLIB_PATH);$(STB_PATH);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <LanguageStandard>stdcpp20</LanguageStandard>
       <AdditionalOptions>/utf-8 %(AdditionalOptions)</AdditionalOptions>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
@@ -119,7 +119,7 @@
       <SDLCheck>true</SDLCheck>
       <PreprocessorDefinitions>_CRT_SECURE_NO_WARNINGS;_CRT_NONSTDC_NO_DEPRECATE;WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
-      <AdditionalIncludeDirectories>$(ZLIB_PATH);$(FFMPEG_WIN32_HEADER_PATH);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>$(ZLIB_PATH);$(STB_PATH);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <LanguageStandard>stdcpp20</LanguageStandard>
       <AdditionalOptions>/utf-8 %(AdditionalOptions)</AdditionalOptions>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
@@ -138,7 +138,7 @@
       <SDLCheck>true</SDLCheck>
       <PreprocessorDefinitions>_CRT_SECURE_NO_WARNINGS;_CRT_NONSTDC_NO_DEPRECATE;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
-      <AdditionalIncludeDirectories>$(ZLIB_PATH);$(FFMPEG_WIN64_HEADER_PATH);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>$(ZLIB_PATH);$(STB_PATH);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <LanguageStandard>stdcpp20</LanguageStandard>
       <AdditionalOptions>/utf-8 %(AdditionalOptions)</AdditionalOptions>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
@@ -159,7 +159,7 @@
       <SDLCheck>true</SDLCheck>
       <PreprocessorDefinitions>_CRT_SECURE_NO_WARNINGS;_CRT_NONSTDC_NO_DEPRECATE;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
-      <AdditionalIncludeDirectories>$(ZLIB_PATH);$(FFMPEG_WIN64_HEADER_PATH);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>$(ZLIB_PATH);$(STB_PATH);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <LanguageStandard>stdcpp20</LanguageStandard>
       <AdditionalOptions>/utf-8 %(AdditionalOptions)</AdditionalOptions>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
diff --git a/LibRef.props b/LibRef.props
index cfef7a9..43b5e33 100644
--- a/LibRef.props
+++ b/LibRef.props
@@ -2,31 +2,17 @@
 <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ImportGroup Label="PropertySheets" />
   <PropertyGroup Label="UserMacros">
-    <FFMPEG_WIN32_HEADER_PATH>D:\CppLib\FFmpeg\Win32\include</FFMPEG_WIN32_HEADER_PATH>
-    <FFMPEG_WIN64_HEADER_PATH>D:\CppLib\FFmpeg\x64\include</FFMPEG_WIN64_HEADER_PATH>
-    <FFMPEG_WIN32_LIB_PATH>D:\CppLib\FFmpeg\Win32\lib</FFMPEG_WIN32_LIB_PATH>
-    <FFMPEG_WIN64_LIB_PATH>D:\CppLib\FFmpeg\x64\lib</FFMPEG_WIN64_LIB_PATH>
-    
+    <STB_PATH>D:\CppLib\stb</STB_PATH>
     <ZLIB_PATH>D:\zlib</ZLIB_PATH>
   </PropertyGroup>
   <PropertyGroup />
   <ItemDefinitionGroup />
   <ItemGroup>
-    <BuildMacro Include="FFMPEG_WIN32_HEADER_PATH">
-        <Value>$(FFMPEG_WIN32_HEADER_PATH)</Value>
-    </BuildMacro>
-    <BuildMacro Include="FFMPEG_WIN64_HEADER_PATH">
-        <Value>$(FFMPEG_WIN64_HEADER_PATH)</Value>
-    </BuildMacro>
-    <BuildMacro Include="FFMPEG_WIN32_LIB_PATH">
-        <Value>$(FFMPEG_WIN32_LIB_PATH)</Value>
-    </BuildMacro>
-    <BuildMacro Include="FFMPEG_WIN64_LIB_PATH">
-        <Value>$(FFMPEG_WIN64_LIB_PATH)</Value>
-    </BuildMacro>
-        
     <BuildMacro Include="ZLIB_PATH">
       <Value>$(ZLIB_PATH)</Value>
     </BuildMacro>
+    <BuildMacro Include="STB_PATH">
+      <Value>$(STB_PATH)</Value>
+    </BuildMacro>
   </ItemGroup>
 </Project>
\ No newline at end of file
diff --git a/README.md b/README.md
index e6ef73c..201375a 100644
--- a/README.md
+++ b/README.md
@@ -73,7 +73,7 @@ This project require:
 * The compiler supporting C++20
 * Littile-endian architecture system.
 * zlib
-* FFmpeg (In Windows, download dev package in [there](https://github.com/yt-dlp/FFmpeg-Builds).)
+* [stb](https://github.com/nothings/stb) (For image read / write)
 * iconv (non-Windows system required)
 
 It can be compiled on Windows via sln file, or on Linux platform via CMake file.  
diff --git a/Unvirt/Unvirt.vcxproj b/Unvirt/Unvirt.vcxproj
index f012ae7..70939e8 100644
--- a/Unvirt/Unvirt.vcxproj
+++ b/Unvirt/Unvirt.vcxproj
@@ -100,7 +100,7 @@
       <SDLCheck>true</SDLCheck>
       <PreprocessorDefinitions>_CRT_SECURE_NO_WARNINGS;_CRT_NONSTDC_NO_DEPRECATE;WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
-      <AdditionalIncludeDirectories>$(ZLIB_PATH);../LibCmo;$(FFMPEG_WIN32_HEADER_PATH);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>$(ZLIB_PATH);../LibCmo;$(STB_PATH);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <LanguageStandard>stdcpp20</LanguageStandard>
       <AdditionalOptions>/utf-8 %(AdditionalOptions)</AdditionalOptions>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
@@ -108,7 +108,7 @@
     <Link>
       <SubSystem>Console</SubSystem>
       <GenerateDebugInformation>true</GenerateDebugInformation>
-      <AdditionalDependencies>zlibwapi.lib;avcodec.lib;avformat.lib;avutil.lib;swscale.lib;avdevice.lib;LibCmo.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>zlibwapi.lib;LibCmo.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <AdditionalLibraryDirectories>$(ZLIB_PATH)\contrib\vstudio\vc14\x86\ZlibDllReleaseWithoutAsm;$(SolutionDir)out\$(Platform)\$(Configuration)\LibCmo;$(FFMPEG_WIN32_LIB_PATH)</AdditionalLibraryDirectories>
     </Link>
   </ItemDefinitionGroup>
@@ -120,7 +120,7 @@
       <SDLCheck>true</SDLCheck>
       <PreprocessorDefinitions>_CRT_SECURE_NO_WARNINGS;_CRT_NONSTDC_NO_DEPRECATE;WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
-      <AdditionalIncludeDirectories>$(ZLIB_PATH);../LibCmo;$(FFMPEG_WIN32_HEADER_PATH);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>$(ZLIB_PATH);../LibCmo;$(STB_PATH);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <LanguageStandard>stdcpp20</LanguageStandard>
       <AdditionalOptions>/utf-8 %(AdditionalOptions)</AdditionalOptions>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
@@ -130,7 +130,7 @@
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
       <GenerateDebugInformation>true</GenerateDebugInformation>
-      <AdditionalDependencies>zlibwapi.lib;avcodec.lib;avformat.lib;avutil.lib;swscale.lib;avdevice.lib;LibCmo.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>zlibwapi.lib;LibCmo.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <AdditionalLibraryDirectories>$(ZLIB_PATH)\contrib\vstudio\vc14\x86\ZlibDllReleaseWithoutAsm;$(SolutionDir)out\$(Platform)\$(Configuration)\LibCmo;$(FFMPEG_WIN32_LIB_PATH)</AdditionalLibraryDirectories>
     </Link>
   </ItemDefinitionGroup>
@@ -140,7 +140,7 @@
       <SDLCheck>true</SDLCheck>
       <PreprocessorDefinitions>_CRT_SECURE_NO_WARNINGS;_CRT_NONSTDC_NO_DEPRECATE;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
-      <AdditionalIncludeDirectories>$(ZLIB_PATH);../LibCmo;$(FFMPEG_WIN64_HEADER_PATH);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>$(ZLIB_PATH);../LibCmo;$(STB_PATH);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <LanguageStandard>stdcpp20</LanguageStandard>
       <AdditionalOptions>/utf-8 %(AdditionalOptions)</AdditionalOptions>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
@@ -148,7 +148,7 @@
     <Link>
       <SubSystem>Console</SubSystem>
       <GenerateDebugInformation>true</GenerateDebugInformation>
-      <AdditionalDependencies>zlibwapi.lib;avcodec.lib;avformat.lib;avutil.lib;swscale.lib;avdevice.lib;LibCmo.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>zlibwapi.lib;LibCmo.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <AdditionalLibraryDirectories>$(ZLIB_PATH)\contrib\vstudio\vc14\x64\ZlibDllReleaseWithoutAsm;$(SolutionDir)out\$(Platform)\$(Configuration)\LibCmo;$(FFMPEG_WIN64_LIB_PATH)</AdditionalLibraryDirectories>
     </Link>
   </ItemDefinitionGroup>
@@ -160,7 +160,7 @@
       <SDLCheck>true</SDLCheck>
       <PreprocessorDefinitions>_CRT_SECURE_NO_WARNINGS;_CRT_NONSTDC_NO_DEPRECATE;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
-      <AdditionalIncludeDirectories>$(ZLIB_PATH);../LibCmo;$(FFMPEG_WIN64_HEADER_PATH);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>$(ZLIB_PATH);../LibCmo;$(STB_PATH);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <LanguageStandard>stdcpp20</LanguageStandard>
       <AdditionalOptions>/utf-8 %(AdditionalOptions)</AdditionalOptions>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
@@ -170,7 +170,7 @@
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
       <GenerateDebugInformation>true</GenerateDebugInformation>
-      <AdditionalDependencies>zlibwapi.lib;avcodec.lib;avformat.lib;avutil.lib;swscale.lib;avdevice.lib;LibCmo.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>zlibwapi.lib;LibCmo.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <AdditionalLibraryDirectories>$(ZLIB_PATH)\contrib\vstudio\vc14\x64\ZlibDllReleaseWithoutAsm;$(SolutionDir)out\$(Platform)\$(Configuration)\LibCmo;$(FFMPEG_WIN64_LIB_PATH)</AdditionalLibraryDirectories>
     </Link>
   </ItemDefinitionGroup>