diff --git a/library/src/main/jniLibs/armeabi-v7a/libenc.so b/library/src/main/jniLibs/armeabi-v7a/libenc.so
index ce82e11..cdcf7d9 100755
Binary files a/library/src/main/jniLibs/armeabi-v7a/libenc.so and b/library/src/main/jniLibs/armeabi-v7a/libenc.so differ
diff --git a/library/src/main/jniLibs/armeabi-v7a/libyuv.so b/library/src/main/jniLibs/armeabi-v7a/libyuv.so
index e2301c6..e217657 100644
Binary files a/library/src/main/jniLibs/armeabi-v7a/libyuv.so and b/library/src/main/jniLibs/armeabi-v7a/libyuv.so differ
diff --git a/library/src/main/jniLibs/x86/libenc.so b/library/src/main/jniLibs/x86/libenc.so
index 0b203f3..a05357f 100755
Binary files a/library/src/main/jniLibs/x86/libenc.so and b/library/src/main/jniLibs/x86/libenc.so differ
diff --git a/library/src/main/jniLibs/x86/libyuv.so b/library/src/main/jniLibs/x86/libyuv.so
index e2da5b8..36f1467 100755
Binary files a/library/src/main/jniLibs/x86/libyuv.so and b/library/src/main/jniLibs/x86/libyuv.so differ
diff --git a/library/src/main/libenc/jni/Android.mk b/library/src/main/libenc/jni/Android.mk
index aef5ce3..942dbc7 100644
--- a/library/src/main/libenc/jni/Android.mk
+++ b/library/src/main/libenc/jni/Android.mk
@@ -9,10 +9,6 @@ ifeq ($(TARGET_ARCH_ABI),armeabi-v7a)
     LOCAL_SRC_FILES := libs/armeabi-v7a/libyuv.so
 endif
 
-ifeq ($(TARGET_ARCH_ABI),arm64-v8a)
-    LOCAL_SRC_FILES := libs/arm64-v8a/libyuv.so
-endif
-
 ifeq ($(TARGET_ARCH_ABI),x86)
     LOCAL_SRC_FILES := libs/x86/libyuv.so
 endif
@@ -26,10 +22,6 @@ ifeq ($(TARGET_ARCH_ABI),armeabi-v7a)
     LOCAL_SRC_FILES := libs/armeabi-v7a/libx264.a
 endif
 
-ifeq ($(TARGET_ARCH_ABI),arm64-v8a)
-    LOCAL_SRC_FILES := libs/arm64-v8a/libx264.a
-endif
-
 ifeq ($(TARGET_ARCH_ABI),x86)
     LOCAL_SRC_FILES := libs/x86/libx264.a
 endif
diff --git a/library/src/main/libenc/jni/Application.mk b/library/src/main/libenc/jni/Application.mk
index 0bee766..baad0ac 100644
--- a/library/src/main/libenc/jni/Application.mk
+++ b/library/src/main/libenc/jni/Application.mk
@@ -1,2 +1,2 @@
-APP_ABI := armeabi-v7a arm64-v8a x86
-APP_PLATFORM := android-21
+APP_ABI := armeabi-v7a x86
+APP_PLATFORM := android-19
diff --git a/library/src/main/libenc/jni/libs/arm64-v8a/libx264.a b/library/src/main/libenc/jni/libs/arm64-v8a/libx264.a
deleted file mode 100644
index cd00705..0000000
Binary files a/library/src/main/libenc/jni/libs/arm64-v8a/libx264.a and /dev/null differ
diff --git a/library/src/main/libenc/jni/libs/arm64-v8a/libyuv.so b/library/src/main/libenc/jni/libs/arm64-v8a/libyuv.so
deleted file mode 100755
index 1ad5542..0000000
Binary files a/library/src/main/libenc/jni/libs/arm64-v8a/libyuv.so and /dev/null differ
diff --git a/library/src/main/libenc/jni/libs/armeabi-v7a/libx264.a b/library/src/main/libenc/jni/libs/armeabi-v7a/libx264.a
index 44ddd7f..566f60d 100644
Binary files a/library/src/main/libenc/jni/libs/armeabi-v7a/libx264.a and b/library/src/main/libenc/jni/libs/armeabi-v7a/libx264.a differ
diff --git a/library/src/main/libenc/jni/libs/armeabi-v7a/libyuv.so b/library/src/main/libenc/jni/libs/armeabi-v7a/libyuv.so
index e2301c6..e217657 100755
Binary files a/library/src/main/libenc/jni/libs/armeabi-v7a/libyuv.so and b/library/src/main/libenc/jni/libs/armeabi-v7a/libyuv.so differ
diff --git a/library/src/main/libenc/jni/libs/x86/libx264.a b/library/src/main/libenc/jni/libs/x86/libx264.a
index 4423385..7b229c3 100644
Binary files a/library/src/main/libenc/jni/libs/x86/libx264.a and b/library/src/main/libenc/jni/libs/x86/libx264.a differ
diff --git a/library/src/main/libenc/jni/libs/x86/libyuv.so b/library/src/main/libenc/jni/libs/x86/libyuv.so
index e2da5b8..36f1467 100755
Binary files a/library/src/main/libenc/jni/libs/x86/libyuv.so and b/library/src/main/libenc/jni/libs/x86/libyuv.so differ
diff --git a/library/src/main/libenc/jni/libx264/android_build_arm64_v8a.sh b/library/src/main/libenc/jni/libx264/android_build_arm64_v8a.sh
deleted file mode 100755
index cb75009..0000000
--- a/library/src/main/libenc/jni/libx264/android_build_arm64_v8a.sh
+++ /dev/null
@@ -1,32 +0,0 @@
-#!/bin/sh
-
-ANDROID_NDK=/home/leoma/MyOSP/android-ndk-r13b
-SYSROOT=$ANDROID_NDK/platforms/android-21/arch-arm64
-CROSS_PREFIX=$ANDROID_NDK/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/aarch64-linux-android-
-EXTRA_CFLAGS="-march=armv8-a -D__ANDROID__"
-EXTRA_LDFLAGS="-nostdlib"
-PREFIX=`pwd`/libs/arm64-v8a
-
-./configure --prefix=$PREFIX \
-        --host=aarch64-linux \
-        --sysroot=$SYSROOT \
-        --cross-prefix=$CROSS_PREFIX \
-        --extra-cflags="$EXTRA_CFLAGS" \
-        --extra-ldflags="$EXTRA_LDFLAGS" \
-        --enable-pic \
-        --enable-static \
-        --enable-strip \
-        --disable-cli \
-        --disable-win32thread \
-        --disable-avs \
-        --disable-swscale \
-        --disable-lavf \
-        --disable-ffms \
-        --disable-gpac \
-        --disable-lsmash
-
-make clean
-make STRIP= -j8 install || exit 1
-
-cp -f $PREFIX/lib/libx264.a $PREFIX
-rm -rf $PREFIX/include $PREFIX/lib $PREFIX/pkgconfig
diff --git a/library/src/main/libenc/jni/libx264/android_build_armeabi_v7a.sh b/library/src/main/libenc/jni/libx264/android_build_armeabi_v7a.sh
index 4bd6b8d..d0ca615 100755
--- a/library/src/main/libenc/jni/libx264/android_build_armeabi_v7a.sh
+++ b/library/src/main/libenc/jni/libx264/android_build_armeabi_v7a.sh
@@ -1,7 +1,7 @@
 #!/bin/sh
 
 ANDROID_NDK=/home/leoma/MyOSP/android-ndk-r13b
-SYSROOT=$ANDROID_NDK/platforms/android-21/arch-arm
+SYSROOT=$ANDROID_NDK/platforms/android-19/arch-arm
 CROSS_PREFIX=$ANDROID_NDK/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin/arm-linux-androideabi-
 EXTRA_CFLAGS="-march=armv7-a -mfloat-abi=softfp -mfpu=neon -D__ANDROID__ -D__ARM_ARCH_7__ -D__ARM_ARCH_7A__"
 EXTRA_LDFLAGS="-nostdlib"
diff --git a/library/src/main/libenc/jni/libx264/android_build_x86.sh b/library/src/main/libenc/jni/libx264/android_build_x86.sh
index 8aeaacb..05dbd7c 100755
--- a/library/src/main/libenc/jni/libx264/android_build_x86.sh
+++ b/library/src/main/libenc/jni/libx264/android_build_x86.sh
@@ -1,7 +1,7 @@
 #!/bin/sh
 
 ANDROID_NDK=/home/leoma/MyOSP/android-ndk-r13b
-SYSROOT=$ANDROID_NDK/platforms/android-21/arch-x86
+SYSROOT=$ANDROID_NDK/platforms/android-19/arch-x86
 CROSS_PREFIX=$ANDROID_NDK/toolchains/x86-4.9/prebuilt/linux-x86_64/bin/i686-linux-android-
 EXTRA_CFLAGS="-D__ANDROID__ -D__i686__"
 EXTRA_LDFLAGS="-nostdlib"
diff --git a/library/src/main/libenc/jni/libyuv/jni/Application.mk b/library/src/main/libenc/jni/libyuv/jni/Application.mk
index 0bee766..baad0ac 100644
--- a/library/src/main/libenc/jni/libyuv/jni/Application.mk
+++ b/library/src/main/libenc/jni/libyuv/jni/Application.mk
@@ -1,2 +1,2 @@
-APP_ABI := armeabi-v7a arm64-v8a x86
-APP_PLATFORM := android-21
+APP_ABI := armeabi-v7a x86
+APP_PLATFORM := android-19