diff --git a/app/build.gradle b/app/build.gradle
index 7128790..fb78768 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -1,29 +1,29 @@
-apply plugin: 'com.android.application'
-
-android {
-    compileSdkVersion 26
-
-    defaultConfig {
-        applicationId "net.ossrs.yasea.demo"
-        minSdkVersion 21
-        targetSdkVersion 22
-        versionCode 1
-        versionName "2.6"
-        ndk {
-            abiFilters "armeabi-v7a", "arm64-v8a", "x86"
-        }
-    }
-    buildTypes {
-        release {
-            minifyEnabled false
-            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
-        }
-    }
-}
-
-dependencies {
-    implementation fileTree(dir: 'libx264.libs', include: ['*.jar'])
-    testImplementation 'junit:junit:4.12'
-    implementation 'com.android.support:appcompat-v7:26.1.0'
-    implementation project(path: ':library')
-}
+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion 26
+
+    defaultConfig {
+        applicationId "net.ossrs.yasea.demo"
+        minSdkVersion 18
+        targetSdkVersion 22
+        versionCode 1
+        versionName "2.6"
+        ndk {
+            abiFilters "armeabi-v7a", "arm64-v8a", "x86", "mips"
+        }
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+}
+
+dependencies {
+    implementation fileTree(dir: 'libx264.libs', include: ['*.jar'])
+    testImplementation 'junit:junit:4.12'
+    implementation 'com.android.support:appcompat-v7:26.1.0'
+    implementation project(path: ':library')
+}
diff --git a/app/src/main/java/net/ossrs/yasea/demo/MainActivity.java b/app/src/main/java/net/ossrs/yasea/demo/MainActivity.java
index 857dcf2..82b7227 100644
--- a/app/src/main/java/net/ossrs/yasea/demo/MainActivity.java
+++ b/app/src/main/java/net/ossrs/yasea/demo/MainActivity.java
@@ -46,6 +46,9 @@ public class MainActivity extends AppCompatActivity implements RtmpHandler.RtmpL
     private SrsPublisher mPublisher;
     private SrsCameraView mCameraView;
 
+    private int mWidth = 640;
+    private int mHeight = 480;
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -76,8 +79,8 @@ public class MainActivity extends AppCompatActivity implements RtmpHandler.RtmpL
         mPublisher.setEncodeHandler(new SrsEncodeHandler(this));
         mPublisher.setRtmpHandler(new RtmpHandler(this));
         mPublisher.setRecordHandler(new SrsRecordHandler(this));
-        mPublisher.setPreviewResolution(640, 360);
-        mPublisher.setOutputResolution(360, 640);
+        mPublisher.setPreviewResolution(mWidth, mHeight);
+        mPublisher.setOutputResolution(mHeight, mWidth); // 这里要和preview反过来
         mPublisher.setVideoHDMode();
         mPublisher.startCamera();
       
diff --git a/library/build.gradle b/library/build.gradle
index 26535be..401e6f5 100644
--- a/library/build.gradle
+++ b/library/build.gradle
@@ -1,37 +1,37 @@
-apply plugin: 'com.android.library'
-
-android {
-    compileSdkVersion 26
-
-    defaultConfig {
-        minSdkVersion 21
-        targetSdkVersion 22
-        versionCode 1
-        versionName "2.6"
-
-        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
-        ndk {
-            abiFilters "armeabi-v7a", "arm64-v8a", "x86"
-        }
-    }
-    buildTypes {
-        release {
-            minifyEnabled false
-            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
-        }
-    }
-    externalNativeBuild {
-        ndkBuild {
-            path 'src/main/cpp/Android.mk'
-        }
-    }
-}
-
-dependencies {
-    implementation fileTree(dir: 'libx264.libs', include: ['*.jar'])
-    androidTestImplementation('com.android.support.test.espresso:espresso-core:2.2.2', {
-        exclude group: 'com.android.support', module: 'support-annotations'
-    })
-    implementation 'com.android.support:appcompat-v7:26.1.0'
-    testImplementation 'junit:junit:4.12'
-}
+apply plugin: 'com.android.library'
+
+android {
+    compileSdkVersion 26
+
+    defaultConfig {
+        minSdkVersion 18
+        targetSdkVersion 22
+        versionCode 1
+        versionName "2.6"
+
+        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+        ndk {
+            abiFilters "armeabi-v7a", "arm64-v8a", "x86", "mips"
+        }
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+    externalNativeBuild {
+        ndkBuild {
+            path 'src/main/cpp/Android.mk'
+        }
+    }
+}
+
+dependencies {
+    implementation fileTree(dir: 'libx264.libs', include: ['*.jar'])
+    androidTestImplementation('com.android.support.test.espresso:espresso-core:2.2.2', {
+        exclude group: 'com.android.support', module: 'support-annotations'
+    })
+    implementation 'com.android.support:appcompat-v7:26.1.0'
+    testImplementation 'junit:junit:4.12'
+}
diff --git a/library/src/main/cpp/Application.mk b/library/src/main/cpp/Application.mk
index 0bbada0..72f8bff 100644
--- a/library/src/main/cpp/Application.mk
+++ b/library/src/main/cpp/Application.mk
@@ -1,2 +1,2 @@
-APP_ABI := armeabi-v7a arm64-v8a x86
+APP_ABI := armeabi-v7a arm64-v8a x86 mips
 APP_PLATFORM := android-21
diff --git a/library/src/main/cpp/libx264/.gitignore b/library/src/main/cpp/libx264/.gitignore
index 174458b..b2bb6af 100644
--- a/library/src/main/cpp/libx264/.gitignore
+++ b/library/src/main/cpp/libx264/.gitignore
@@ -1,5 +1,6 @@
+/libx264.a
 *~
-*.a
+#*.a
 *.diff
 *.orig
 *.rej
diff --git a/library/src/main/cpp/libx264/android_build_all.sh b/library/src/main/cpp/libx264/android_build_all.sh
new file mode 100755
index 0000000..1aa9fab
--- /dev/null
+++ b/library/src/main/cpp/libx264/android_build_all.sh
@@ -0,0 +1,24 @@
+# Created by jianxi on 2017/6/4
+# https://github.com/mabeijianxi
+# mabeijianxi@gmail.com
+# Edit by obarong on 2020/4/15
+
+chmod a+x android_*.sh
+
+# Build armeabi
+#./android_build_armeabi.sh
+
+# Build arm v6 v7a
+./android_build_armeabi_v7a.sh
+
+# Build arm64 v8a
+./android_build_arm64_v8a.sh
+
+# Build mips
+./android_build_mips.sh
+
+# Build x86
+./android_build_x86.sh
+
+# Build x86_64
+#./android_x86_64_build.sh
diff --git a/library/src/main/cpp/libx264/android_build_arm64_v8a.sh b/library/src/main/cpp/libx264/android_build_arm64_v8a.sh
index c076e39..d82f463 100755
--- a/library/src/main/cpp/libx264/android_build_arm64_v8a.sh
+++ b/library/src/main/cpp/libx264/android_build_arm64_v8a.sh
@@ -1,8 +1,8 @@
 #!/bin/sh
 
-ANDROID_NDK=$HOME/Android/Sdk/ndk-bundle
+ANDROID_NDK=$HOME/Android/android-ndk-r14b
 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-
+CROSS_PREFIX=$ANDROID_NDK/toolchains/aarch64-linux-android-4.9/prebuilt/darwin-x86_64/bin/aarch64-linux-android-
 EXTRA_CFLAGS="-march=armv8-a -D__ANDROID__"
 EXTRA_LDFLAGS="-nostdlib"
 PREFIX=`pwd`/libs/arm64-v8a
diff --git a/library/src/main/cpp/libx264/android_build_armeabi_v7a.sh b/library/src/main/cpp/libx264/android_build_armeabi_v7a.sh
index 037c195..a5837fc 100755
--- a/library/src/main/cpp/libx264/android_build_armeabi_v7a.sh
+++ b/library/src/main/cpp/libx264/android_build_armeabi_v7a.sh
@@ -1,8 +1,8 @@
 #!/bin/sh
 
-ANDROID_NDK=$HOME/Android/Sdk/ndk-bundle
-SYSROOT=$ANDROID_NDK/platforms/android-21/arch-arm
-CROSS_PREFIX=$ANDROID_NDK/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin/arm-linux-androideabi-
+ANDROID_NDK=$HOME/Android/android-ndk-r14b
+SYSROOT=$ANDROID_NDK/platforms/android-19/arch-arm
+CROSS_PREFIX=$ANDROID_NDK/toolchains/arm-linux-androideabi-4.9/prebuilt/darwin-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"
 PREFIX=`pwd`/libs/armeabi-v7a
diff --git a/library/src/main/cpp/libx264/android_build_x86.sh b/library/src/main/cpp/libx264/android_build_x86.sh
index c6bf1b0..9daf50c 100755
--- a/library/src/main/cpp/libx264/android_build_x86.sh
+++ b/library/src/main/cpp/libx264/android_build_x86.sh
@@ -1,8 +1,8 @@
 #!/bin/sh
 
-ANDROID_NDK=$HOME/Android/Sdk/ndk-bundle
-SYSROOT=$ANDROID_NDK/platforms/android-21/arch-x86
-CROSS_PREFIX=$ANDROID_NDK/toolchains/x86-4.9/prebuilt/linux-x86_64/bin/i686-linux-android-
+ANDROID_NDK=$HOME/Android/android-ndk-r14b
+SYSROOT=$ANDROID_NDK/platforms/android-19/arch-x86
+CROSS_PREFIX=$ANDROID_NDK/toolchains/x86-4.9/prebuilt/darwin-x86_64/bin/i686-linux-android-
 EXTRA_CFLAGS="-D__ANDROID__ -D__i686__"
 EXTRA_LDFLAGS="-nostdlib"
 PREFIX=`pwd`/libs/x86
diff --git a/library/src/main/cpp/libx264/libs/arm64-v8a/libx264.a b/library/src/main/cpp/libx264/libs/arm64-v8a/libx264.a
index 3b8acab..88cb2c9 100644
Binary files a/library/src/main/cpp/libx264/libs/arm64-v8a/libx264.a and b/library/src/main/cpp/libx264/libs/arm64-v8a/libx264.a differ
diff --git a/library/src/main/cpp/libx264/libs/armeabi-v7a/libx264.a b/library/src/main/cpp/libx264/libs/armeabi-v7a/libx264.a
index c430a65..05934a3 100644
Binary files a/library/src/main/cpp/libx264/libs/armeabi-v7a/libx264.a and b/library/src/main/cpp/libx264/libs/armeabi-v7a/libx264.a differ
diff --git a/library/src/main/cpp/libx264/libs/mips/libx264.a b/library/src/main/cpp/libx264/libs/mips/libx264.a
new file mode 100644
index 0000000..b4a88c0
Binary files /dev/null and b/library/src/main/cpp/libx264/libs/mips/libx264.a differ
diff --git a/library/src/main/cpp/libx264/libs/x86/libx264.a b/library/src/main/cpp/libx264/libs/x86/libx264.a
index c973ac0..97ef4d1 100644
Binary files a/library/src/main/cpp/libx264/libs/x86/libx264.a and b/library/src/main/cpp/libx264/libs/x86/libx264.a differ