diff --git a/Rakefile b/Rakefile
index ea4532f2..d527c362 100644
--- a/Rakefile
+++ b/Rakefile
@@ -10,7 +10,7 @@ end
 
 ## build ffmpeg
 
-SDK_VERSION='7.1'
+SDK_VERSION='9.0'
 
 XCODE_PATH='/Applications/Xcode.app/Contents/Developer/Platforms'
 GCC_PATH='/Applications/XCode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang'
@@ -27,8 +27,18 @@ FFMPEG_BUILD_ARGS_SIM = [
 '--disable-mmx',
 '--arch=i386',
 '--cpu=i386',
-"--extra-ldflags='-arch i386 -miphoneos-version-min=6.0'",
-"--extra-cflags='-arch i386 -miphoneos-version-min=6.0'",
+"--extra-ldflags='-arch i386 -miphoneos-version-min=7.0'",
+"--extra-cflags='-arch i386 -miphoneos-version-min=7.0 -fembed-bitcode'",
+'--disable-asm',
+]
+
+FFMPEG_BUILD_ARGS_SIM_64 = [
+'--assert-level=2',
+'--disable-mmx',
+'--arch=x86_64',
+'--cpu=x86_64',
+"--extra-ldflags='-arch x86_64 -miphoneos-version-min=7.0'",
+"--extra-cflags='-arch x86_64 -miphoneos-version-min=7.0 -fembed-bitcode'",
 '--disable-asm',
 ]
 
@@ -36,9 +46,9 @@ FFMPEG_BUILD_ARGS_ARMV7 = [
 '--arch=arm',
 '--cpu=cortex-a8',
 '--enable-pic',
-"--extra-cflags='-arch armv7 -miphoneos-version-min=6.0'",
-"--extra-ldflags='-arch armv7 -miphoneos-version-min=6.0'",
-"--extra-cflags='-mfpu=neon -mfloat-abi=softfp'",
+"--extra-cflags='-arch armv7 -miphoneos-version-min=7.0 -fembed-bitcode'",
+"--extra-ldflags='-arch armv7 -miphoneos-version-min=7.0'",
+"--extra-cflags='-mfpu=neon -mfloat-abi=softfp -fembed-bitcode'",
 '--enable-neon',
 # '--disable-neon',
 '--enable-optimizations',
@@ -53,9 +63,9 @@ FFMPEG_BUILD_ARGS_ARMV7S = [
 '--arch=arm',
 '--cpu=cortex-a9',
 '--enable-pic',
-"--extra-cflags='-arch armv7s -miphoneos-version-min=6.0'",
-"--extra-ldflags='-arch armv7s -miphoneos-version-min=6.0'",
-"--extra-cflags='-mfpu=neon -mfloat-abi=softfp'",
+"--extra-cflags='-arch armv7s -miphoneos-version-min=7.0 -fembed-bitcode'",
+"--extra-ldflags='-arch armv7s -miphoneos-version-min=7.0'",
+"--extra-cflags='-mfpu=neon -mfloat-abi=softfp -fembed-bitcode'",
 '--enable-neon',
 # '--disable-neon',
 '--enable-optimizations',
@@ -70,9 +80,9 @@ FFMPEG_BUILD_ARGS_ARM64 = [
 '--arch=arm64',
 # '--cpu=cortex-a9',
 '--enable-pic',
-"--extra-cflags='-arch arm64 -miphoneos-version-min=6.0'",
-"--extra-ldflags='-arch arm64 -miphoneos-version-min=6.0'",
-"--extra-cflags='-mfpu=neon -mfloat-abi=softfp'",
+"--extra-cflags='-arch arm64 -miphoneos-version-min=7.0 -fembed-bitcode'",
+"--extra-ldflags='-arch arm64 -miphoneos-version-min=7.0'",
+"--extra-cflags='-mfpu=neon -mfloat-abi=softfp -fembed-bitcode'",
 '--enable-neon',
 # '--disable-neon',
 '--enable-optimizations',
@@ -144,6 +154,8 @@ def buildArch(arch)
 	case arch
 	when 'i386'
 		args = mkArgs(PLATOFRM_PATH_SIM, SDK_PATH_SIM, FFMPEG_BUILD_ARGS_SIM)
+	when 'x86_64'
+		args = mkArgs(PLATOFRM_PATH_SIM, SDK_PATH_SIM, FFMPEG_BUILD_ARGS_SIM_64)
 	when 'armv7'
 		args = mkArgs(PLATOFRM_PATH_IOS, SDK_PATH_IOS, FFMPEG_BUILD_ARGS_ARMV7)
 	when 'armv7s'
@@ -164,7 +176,7 @@ def buildArch(arch)
 end
 
 def mkLipoArgs(lib)
-	"-create -arch armv7 armv7/#{lib}.a -arch armv7 armv7s/#{lib}.a -arch arm64 arm64/#{lib}.a -arch i386 i386/#{lib}.a -output universal/#{lib}.a"
+	"-create -arch armv7 armv7/#{lib}.a -arch armv7 armv7s/#{lib}.a -arch arm64 arm64/#{lib}.a -arch i386 i386/#{lib}.a -arch x86_64 x86_64/#{lib}.a -output universal/#{lib}.a"
 end
 
 desc "check gas-preprocessor.pl"
@@ -202,6 +214,11 @@ task :build_ffmpeg_i386 do
 	buildArch('i386')	
 end
 
+desc "Build ffmpeg x86_64 libs"
+task :build_ffmpeg_x86_64 do	
+	buildArch('x86_64')	
+end
+
 desc "Build ffmpeg armv7 libs"
 task :build_ffmpeg_armv7 do	
 	buildArch('armv7')	
@@ -259,9 +276,16 @@ task :build_movie_debug do
 	system_or_exit "xcodebuild -project kxmovie.xcodeproj -target kxmovie -configuration Debug -sdk iphoneos#{SDK_VERSION} build SYMROOT=#{buildDir} -arch armv7s"			
 	FileUtils.move Pathname.new('tmp/build/Debug-iphoneos/libkxmovie.a'), Pathname.new('tmp/build/Debug-iphoneos/libkxmovie_armv7s.a')	
 
+	system_or_exit "xcodebuild -project kxmovie.xcodeproj -target kxmovie -configuration Debug -sdk iphoneos#{SDK_VERSION} build SYMROOT=#{buildDir} -arch arm64"			
+	FileUtils.move Pathname.new('tmp/build/Debug-iphoneos/libkxmovie.a'), Pathname.new('tmp/build/Debug-iphoneos/libkxmovie_arm64.a')	
+
 	system_or_exit "xcodebuild -project kxmovie.xcodeproj -target kxmovie -configuration Debug -sdk iphoneos#{SDK_VERSION} build SYMROOT=#{buildDir} -arch armv7"		
+
+	system_or_exit "xcodebuild -project kxmovie.xcodeproj -target kxmovie -configuration Debug -sdk iphonesimulator#{SDK_VERSION} build SYMROOT=#{buildDir} -arch x86_64"	
+	FileUtils.move Pathname.new('tmp/build/Debug-iphonesimulator/libkxmovie.a'), Pathname.new('tmp/build/Debug-iphonesimulator/libkxmovie_x86_64.a')	
+
 	system_or_exit "xcodebuild -project kxmovie.xcodeproj -target kxmovie -configuration Debug -sdk iphonesimulator#{SDK_VERSION} build SYMROOT=#{buildDir}"	
-	system_or_exit "lipo -create -arch armv7 tmp/build/Debug-iphoneos/libkxmovie.a -arch armv7 tmp/build/Debug-iphoneos/libkxmovie_armv7s.a -arch i386 tmp/build/Debug-iphonesimulator/libkxmovie.a -output tmp/build/libkxmovie.a"
+	system_or_exit "lipo -create -arch armv7 tmp/build/Debug-iphoneos/libkxmovie.a -arch armv7 tmp/build/Debug-iphoneos/libkxmovie_armv7s.a -arch arm64 tmp/build/Debug-iphoneos/libkxmovie_arm64.a -arch x86_64 tmp/build/Debug-iphonesimulator/libkxmovie_x86_64.a -arch i386 tmp/build/Debug-iphonesimulator/libkxmovie.a -output tmp/build/libkxmovie.a"
 end
 
 desc "Build libkxmovie-release"
@@ -270,9 +294,18 @@ task :build_movie_release do
 	system_or_exit "xcodebuild -project kxmovie.xcodeproj -target kxmovie -configuration Release -sdk iphoneos#{SDK_VERSION} build SYMROOT=#{buildDir} -arch armv7s"	
 	FileUtils.move Pathname.new('tmp/build/Release-iphoneos/libkxmovie.a'), Pathname.new('tmp/build/Release-iphoneos/libkxmovie_armv7s.a')	
 
+	system_or_exit "xcodebuild -project kxmovie.xcodeproj -target kxmovie -configuration Release -sdk iphoneos#{SDK_VERSION} build SYMROOT=#{buildDir} -arch arm64"	
+	FileUtils.move Pathname.new('tmp/build/Release-iphoneos/libkxmovie.a'), Pathname.new('tmp/build/Release-iphoneos/libkxmovie_arm64.a')	
+
 	system_or_exit "xcodebuild -project kxmovie.xcodeproj -target kxmovie -configuration Release -sdk iphoneos#{SDK_VERSION} build SYMROOT=#{buildDir} -arch armv7"	
-	system_or_exit "xcodebuild -project kxmovie.xcodeproj -target kxmovie -configuration Debug -sdk iphonesimulator#{SDK_VERSION} build SYMROOT=#{buildDir}"	
-	system_or_exit "lipo -create -arch armv7 tmp/build/Release-iphoneos/libkxmovie.a -arch armv7 tmp/build/Release-iphoneos/libkxmovie_armv7s.a -arch i386 tmp/build/Debug-iphonesimulator/libkxmovie.a -output tmp/build/libkxmovie.a"
+
+	system_or_exit "xcodebuild -project kxmovie.xcodeproj -target kxmovie -configuration Debug -sdk iphonesimulator#{SDK_VERSION} build SYMROOT=#{buildDir} -arch x86_64"	
+
+	FileUtils.move Pathname.new('tmp/build/Debug-iphonesimulator/libkxmovie.a'), Pathname.new('tmp/build/Debug-iphonesimulator/libkxmovie_x86_64.a')	
+
+	system_or_exit "xcodebuild -project kxmovie.xcodeproj -target kxmovie -configuration Debug -sdk iphonesimulator#{SDK_VERSION} build SYMROOT=#{buildDir}"
+
+	system_or_exit "lipo -create -arch armv7 tmp/build/Release-iphoneos/libkxmovie.a -arch armv7 tmp/build/Release-iphoneos/libkxmovie_armv7s.a -arch arm64 tmp/build/Release-iphoneos/libkxmovie_arm64.a -arch x86_64 tmp/build/Debug-iphonesimulator/libkxmovie_x86_64.a -arch i386 tmp/build/Debug-iphonesimulator/libkxmovie.a -output tmp/build/libkxmovie.a"
 	
 	#FileUtils.copy Pathname.new('tmp/build/Release-iphoneos/libkxmovie.a'), buildDir
 end
@@ -294,9 +327,9 @@ end
 
 ##
 task :clean => [:clean_movie_debug, :clean_movie_release, :clean_ffmpeg]
-task :build_ffmpeg => [:check_gas_preprocessor, :build_ffmpeg_armv7, :build_ffmpeg_armv7s, :build_ffmpeg_arm64, :build_ffmpeg_i386, :build_ffmpeg_universal]
+task :build_ffmpeg => [:check_gas_preprocessor, :build_ffmpeg_armv7, :build_ffmpeg_armv7s, :build_ffmpeg_arm64, :build_ffmpeg_i386, :build_ffmpeg_x86_64, :build_ffmpeg_universal]
 #task :build_movie => [:build_movie_debug, :copy_movie] 
 task :build_movie => [:build_movie_release, :copy_movie] 
 task :build_all => [:build_ffmpeg, :build_movie] 
 # task :default => [:build_all]
-task :default => [:build_ffmpeg]
+task :default => [:build_ffmpeg]
\ No newline at end of file
diff --git a/gas-preprocessor b/gas-preprocessor
index cafe6e55..dd811e7a 160000
--- a/gas-preprocessor
+++ b/gas-preprocessor
@@ -1 +1 @@
-Subproject commit cafe6e55a5606c5423c0a0e4045a97f2c3a86338
+Subproject commit dd811e7a8403ef762e333909c54c24674ee04892