diff --git a/NEWS.md b/NEWS.md
index 20297a07c666395cfcc8920684e1d11c27f94540..74e735a5ce5dd0b5a6af9a44db63428d187e7785 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,6 +1,12 @@
 tag next
 --------------------------------
+
+tag k0.7.3
+- ios: turn videotoolbox into singleton
+- ffmoeg: merge ipv6 issue in tcp.c
+
 tag k0.7.2
+-------------------------------
 - ios: fix a compile error
 
 tag k0.7.1
diff --git a/README.md b/README.md
index 03681444e579cce9aacfb8c67fc445cb85d5a0ff..ff6554b652dbda581d2a7852eee83c2c32093f26 100644
--- a/README.md
+++ b/README.md
@@ -21,17 +21,17 @@ allprojects {
 
 dependencies {
     # required, enough for most devices.
-    compile 'tv.danmaku.ijk.media:ijkplayer-java:0.7.2'
-    compile 'tv.danmaku.ijk.media:ijkplayer-armv7a:0.7.2'
+    compile 'tv.danmaku.ijk.media:ijkplayer-java:0.7.3'
+    compile 'tv.danmaku.ijk.media:ijkplayer-armv7a:0.7.3'
 
     # Other ABIs: optional
-    compile 'tv.danmaku.ijk.media:ijkplayer-armv5:0.7.2'
-    compile 'tv.danmaku.ijk.media:ijkplayer-arm64:0.7.2'
-    compile 'tv.danmaku.ijk.media:ijkplayer-x86:0.7.2'
-    compile 'tv.danmaku.ijk.media:ijkplayer-x86_64:0.7.2'
+    compile 'tv.danmaku.ijk.media:ijkplayer-armv5:0.7.3'
+    compile 'tv.danmaku.ijk.media:ijkplayer-arm64:0.7.3'
+    compile 'tv.danmaku.ijk.media:ijkplayer-x86:0.7.3'
+    compile 'tv.danmaku.ijk.media:ijkplayer-x86_64:0.7.3'
 
     # ExoPlayer as IMediaPlayer: optional, experimental
-    compile 'tv.danmaku.ijk.media:ijkplayer-exo:0.7.2'
+    compile 'tv.danmaku.ijk.media:ijkplayer-exo:0.7.3'
 }
 ```
 - iOS
@@ -137,7 +137,7 @@ sudo dpkg-reconfigure dash
 ```
 git clone https://github.com/Bilibili/ijkplayer.git ijkplayer-android
 cd ijkplayer-android
-git checkout -B latest k0.7.2
+git checkout -B latest k0.7.3
 
 ./init-android.sh
 
@@ -191,7 +191,7 @@ cd ..
 ```
 git clone https://github.com/Bilibili/ijkplayer.git ijkplayer-ios
 cd ijkplayer-ios
-git checkout -B latest k0.7.2
+git checkout -B latest k0.7.3
 
 ./init-ios.sh
 
diff --git a/android/ijkplayer/build.gradle b/android/ijkplayer/build.gradle
index 7dc2a3b57d585b866f2ae32ceef05a3f3a978571..27a38ee9048100c8c2ec88961a5d98fa13e4b5db 100644
--- a/android/ijkplayer/build.gradle
+++ b/android/ijkplayer/build.gradle
@@ -26,8 +26,8 @@ ext {
 
     targetSdkVersion = 23
 
-    versionCode = 700100
-    versionName = "0.7.2"
+    versionCode = 700300
+    versionName = "0.7.3"
 }
 
 wrapper {
diff --git a/android/ijkplayer/gradle.properties b/android/ijkplayer/gradle.properties
index a7cd3e19997241afa56b8dd03a951ff6bfab88c8..e4c742613e51b288de16618914d294eb59974ad4 100644
--- a/android/ijkplayer/gradle.properties
+++ b/android/ijkplayer/gradle.properties
@@ -17,8 +17,8 @@
 # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
 # org.gradle.parallel=true
 
-VERSION_NAME=0.7.2
-VERSION_CODE=700100
+VERSION_NAME=0.7.3
+VERSION_CODE=700300
 GROUP=tv.danmaku.ijk.media
 
 # http://central.sonatype.org/pages/requirements.html
diff --git a/android/ijkplayer/ijkplayer-example/build.gradle b/android/ijkplayer/ijkplayer-example/build.gradle
index 403535b40ae5e3ee1ab1a9c0b0adea4d3bd7a1de..cdb87eb775f6f6e7a0c77056eb6f10244b2b4d7a 100644
--- a/android/ijkplayer/ijkplayer-example/build.gradle
+++ b/android/ijkplayer/ijkplayer-example/build.gradle
@@ -54,18 +54,18 @@ dependencies {
     all64Compile project(':ijkplayer-x86')
     all64Compile project(':ijkplayer-x86_64')
 
-    // compile 'tv.danmaku.ijk.media:ijkplayer-java:0.7.2'
-    // compile 'tv.danmaku.ijk.media:ijkplayer-exo:0.7.2'
+    // compile 'tv.danmaku.ijk.media:ijkplayer-java:0.7.3'
+    // compile 'tv.danmaku.ijk.media:ijkplayer-exo:0.7.3'
 
-    // all32Compile 'tv.danmaku.ijk.media:ijkplayer-armv5:0.7.2'
-    // all32Compile 'tv.danmaku.ijk.media:ijkplayer-armv7a:0.7.2'
-    // all32Compile 'tv.danmaku.ijk.media:ijkplayer-x86:0.7.2'
+    // all32Compile 'tv.danmaku.ijk.media:ijkplayer-armv5:0.7.3'
+    // all32Compile 'tv.danmaku.ijk.media:ijkplayer-armv7a:0.7.3'
+    // all32Compile 'tv.danmaku.ijk.media:ijkplayer-x86:0.7.3'
 
-    // all64Compile 'tv.danmaku.ijk.media:ijkplayer-armv5:0.7.2'
-    // all64Compile 'tv.danmaku.ijk.media:ijkplayer-armv7a:0.7.2'
-    // all64Compile 'tv.danmaku.ijk.media:ijkplayer-arm64:0.7.2'
-    // all64Compile 'tv.danmaku.ijk.media:ijkplayer-x86:0.7.2'
-    // all64Compile 'tv.danmaku.ijk.media:ijkplayer-x86_64:0.7.2'
+    // all64Compile 'tv.danmaku.ijk.media:ijkplayer-armv5:0.7.3'
+    // all64Compile 'tv.danmaku.ijk.media:ijkplayer-armv7a:0.7.3'
+    // all64Compile 'tv.danmaku.ijk.media:ijkplayer-arm64:0.7.3'
+    // all64Compile 'tv.danmaku.ijk.media:ijkplayer-x86:0.7.3'
+    // all64Compile 'tv.danmaku.ijk.media:ijkplayer-x86_64:0.7.3'
 
     // armv5Compile project(':player-armv5')
     // armv7aCompile project(':player-armv7a')
diff --git a/android/ijkplayer/ijkplayer-exo/build.gradle b/android/ijkplayer/ijkplayer-exo/build.gradle
index 52d3a58bb45ebe346e434055ddc5f85c59d9e146..5b7b33ce0130872455247ee2fcae067e4aae9d8f 100644
--- a/android/ijkplayer/ijkplayer-exo/build.gradle
+++ b/android/ijkplayer/ijkplayer-exo/build.gradle
@@ -28,7 +28,7 @@ dependencies {
     compile 'com.google.android.exoplayer:exoplayer:r1.5.11'
 
     compile project(':ijkplayer-java')
-    // compile 'tv.danmaku.ijk.media:ijkplayer-java:0.7.2'
+    // compile 'tv.danmaku.ijk.media:ijkplayer-java:0.7.3'
 }
 
 gradle.startParameter.taskNames.each { task ->
diff --git a/ios/IJKMediaPlayer/IJKMediaPlayer/IJKFFMoviePlayerController.m b/ios/IJKMediaPlayer/IJKMediaPlayer/IJKFFMoviePlayerController.m
index 6f09022c36c9aa11858644f89785196d5343fae7..e21ee0629218174b89ad7600f434f036e6fe2e74 100644
--- a/ios/IJKMediaPlayer/IJKMediaPlayer/IJKFFMoviePlayerController.m
+++ b/ios/IJKMediaPlayer/IJKMediaPlayer/IJKFFMoviePlayerController.m
@@ -32,7 +32,7 @@
 
 #include "string.h"
 
-static const char *kIJKFFRequiredFFmpegVersion = "ff3.2--ijk0.7.0--20161102--001";
+static const char *kIJKFFRequiredFFmpegVersion = "ff3.2--ijk0.7.2-20161107--001";
 
 // It means you didn't call shutdown if you found this object leaked.
 @interface IJKWeakHolder : NSObject
diff --git a/version.sh b/version.sh
index 5015b4f42d91e45a022c6efb1d7a9520697868bd..8e7b584d64a5606acf2a03ec3143dff4beb698ad 100755
--- a/version.sh
+++ b/version.sh
@@ -2,8 +2,8 @@
 
 set -e
 
-VERSION_CODE=700100
-VERSION_NAME=0.7.2
+VERSION_CODE=700300
+VERSION_NAME=0.7.3
 VERSION_TARGET=$1
 
 do_version_readme() {