diff --git a/build.gradle b/build.gradle
index 4f18e7c801..981bab596c 100644
--- a/build.gradle
+++ b/build.gradle
@@ -33,23 +33,7 @@ allprojects {
         jcenter()
     }
     project.ext {
-        // Important: ExoPlayer specifies a minSdkVersion of 9 because various
-        // components provided by the library may be of use on older devices.
-        // However, please note that the core media playback functionality
-        // provided by the library requires API level 16 or greater.
-        minSdkVersion = 9
-        compileSdkVersion = 25
-        targetSdkVersion = 25
-        buildToolsVersion = '25'
-        testSupportLibraryVersion = '0.5'
-        supportLibraryVersion = '25.3.1'
-        dexmakerVersion = '1.2'
-        mockitoVersion = '1.9.5'
-        releaseRepoName = getBintrayRepo()
-        releaseUserOrg = 'google'
-        releaseGroupId = 'com.google.android.exoplayer'
-        releaseVersion = 'r2.4.2'
-        releaseWebsite = 'https://github.com/google/ExoPlayer'
+        exoplayerPublishEnabled = true
     }
     if (it.hasProperty('externalBuildDir')) {
         if (!new File(externalBuildDir).isAbsolute()) {
@@ -59,10 +43,4 @@ allprojects {
     }
 }
 
-def getBintrayRepo() {
-    boolean publicRepo = hasProperty('publicRepo') &&
-        property('publicRepo').toBoolean()
-    return publicRepo ? 'exoplayer' : 'exoplayer-test'
-}
-
 apply from: 'javadoc_combined.gradle'
diff --git a/demo/build.gradle b/demo/build.gradle
index 939c5ac93d..4d930b8a78 100644
--- a/demo/build.gradle
+++ b/demo/build.gradle
@@ -11,6 +11,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
+apply from: '../version_constants.gradle'
 apply plugin: 'com.android.application'
 
 android {
diff --git a/extensions/cronet/build.gradle b/extensions/cronet/build.gradle
index 5611817b2e..199cee2a71 100644
--- a/extensions/cronet/build.gradle
+++ b/extensions/cronet/build.gradle
@@ -11,6 +11,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
+apply from: '../../version_constants.gradle'
 apply plugin: 'com.android.library'
 
 android {
diff --git a/extensions/ffmpeg/build.gradle b/extensions/ffmpeg/build.gradle
index 0eddd017a4..57e1c25bc0 100644
--- a/extensions/ffmpeg/build.gradle
+++ b/extensions/ffmpeg/build.gradle
@@ -11,6 +11,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
+apply from: '../../version_constants.gradle'
 apply plugin: 'com.android.library'
 
 android {
diff --git a/extensions/flac/build.gradle b/extensions/flac/build.gradle
index 4a6b8e0e5a..ebe5d1d796 100644
--- a/extensions/flac/build.gradle
+++ b/extensions/flac/build.gradle
@@ -11,6 +11,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
+apply from: '../../version_constants.gradle'
 apply plugin: 'com.android.library'
 
 android {
diff --git a/extensions/gvr/build.gradle b/extensions/gvr/build.gradle
index e15c8b1ad8..d21912a686 100644
--- a/extensions/gvr/build.gradle
+++ b/extensions/gvr/build.gradle
@@ -11,6 +11,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
+apply from: '../../version_constants.gradle'
 apply plugin: 'com.android.library'
 
 android {
diff --git a/extensions/ima/build.gradle b/extensions/ima/build.gradle
index 4ba26cc244..90ca98ab84 100644
--- a/extensions/ima/build.gradle
+++ b/extensions/ima/build.gradle
@@ -1,3 +1,4 @@
+apply from: '../../version_constants.gradle'
 apply plugin: 'com.android.library'
 
 android {
diff --git a/extensions/okhttp/build.gradle b/extensions/okhttp/build.gradle
index f47f1a8556..7f3f3d2e1a 100644
--- a/extensions/okhttp/build.gradle
+++ b/extensions/okhttp/build.gradle
@@ -11,6 +11,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
+apply from: '../../version_constants.gradle'
 apply plugin: 'com.android.library'
 
 android {
diff --git a/extensions/opus/build.gradle b/extensions/opus/build.gradle
index 31d5450fdd..7c86d994d9 100644
--- a/extensions/opus/build.gradle
+++ b/extensions/opus/build.gradle
@@ -11,6 +11,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
+apply from: '../../version_constants.gradle'
 apply plugin: 'com.android.library'
 
 android {
diff --git a/extensions/vp9/build.gradle b/extensions/vp9/build.gradle
index 5068586a4a..8f2947439b 100644
--- a/extensions/vp9/build.gradle
+++ b/extensions/vp9/build.gradle
@@ -11,6 +11,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
+apply from: '../../version_constants.gradle'
 apply plugin: 'com.android.library'
 
 android {
diff --git a/library/all/build.gradle b/library/all/build.gradle
index 63943ada77..270d92ce33 100644
--- a/library/all/build.gradle
+++ b/library/all/build.gradle
@@ -11,6 +11,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
+apply from: '../../version_constants.gradle'
 apply plugin: 'com.android.library'
 
 android {
diff --git a/library/core/build.gradle b/library/core/build.gradle
index ad1c150fe7..5d9ece71b6 100644
--- a/library/core/build.gradle
+++ b/library/core/build.gradle
@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 apply plugin: 'com.android.library'
+apply from: '../../version_constants.gradle'
 
 android {
     compileSdkVersion project.ext.compileSdkVersion
diff --git a/library/dash/build.gradle b/library/dash/build.gradle
index 36d3edfbae..e1598f783f 100644
--- a/library/dash/build.gradle
+++ b/library/dash/build.gradle
@@ -11,6 +11,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
+apply from: '../../version_constants.gradle'
 apply plugin: 'com.android.library'
 
 android {
diff --git a/library/hls/build.gradle b/library/hls/build.gradle
index 47b5758b1d..140dafc237 100644
--- a/library/hls/build.gradle
+++ b/library/hls/build.gradle
@@ -11,6 +11,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
+apply from: '../../version_constants.gradle'
 apply plugin: 'com.android.library'
 
 android {
diff --git a/library/smoothstreaming/build.gradle b/library/smoothstreaming/build.gradle
index 28ebd74758..dd51dc13aa 100644
--- a/library/smoothstreaming/build.gradle
+++ b/library/smoothstreaming/build.gradle
@@ -11,6 +11,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
+apply from: '../../version_constants.gradle'
 apply plugin: 'com.android.library'
 
 android {
diff --git a/library/ui/build.gradle b/library/ui/build.gradle
index 96dcd52655..be600ec126 100644
--- a/library/ui/build.gradle
+++ b/library/ui/build.gradle
@@ -11,6 +11,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
+apply from: '../../version_constants.gradle'
 apply plugin: 'com.android.library'
 
 android {
diff --git a/playbacktests/build.gradle b/playbacktests/build.gradle
index 199077f2b2..217d913853 100644
--- a/playbacktests/build.gradle
+++ b/playbacktests/build.gradle
@@ -11,6 +11,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
+apply from: '../version_constants.gradle'
 apply plugin: 'com.android.library'
 
 android {
diff --git a/publish.gradle b/publish.gradle
index 17214959ab..ca1a2cfd8b 100644
--- a/publish.gradle
+++ b/publish.gradle
@@ -11,14 +11,22 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-apply plugin: 'bintray-release'
-
-publish {
-    artifactId = releaseArtifact
-    description = releaseDescription
-    repoName = releaseRepoName
-    userOrg = releaseUserOrg
-    groupId = releaseGroupId
-    version = releaseVersion
-    website = releaseWebsite
+if (project.ext.has("exoplayerPublishEnabled")
+        && project.ext.exoplayerPublishEnabled) {
+    apply plugin: 'bintray-release'
+    publish {
+        artifactId = releaseArtifact
+        description = releaseDescription
+        version = releaseVersion
+        repoName = getBintrayRepo()
+        userOrg = 'google'
+        groupId = 'com.google.android.exoplayer'
+        website = 'https://github.com/google/ExoPlayer'
+    }
+}
+
+def getBintrayRepo() {
+    boolean publicRepo = hasProperty('publicRepo') &&
+        property('publicRepo').toBoolean()
+    return publicRepo ? 'exoplayer' : 'exoplayer-test'
 }
diff --git a/testutils/build.gradle b/testutils/build.gradle
index 5fea76f9c3..801bd36298 100644
--- a/testutils/build.gradle
+++ b/testutils/build.gradle
@@ -11,6 +11,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
+apply from: '../version_constants.gradle'
 apply plugin: 'com.android.library'
 
 android {
diff --git a/version_constants.gradle b/version_constants.gradle
new file mode 100644
index 0000000000..9f69263c9e
--- /dev/null
+++ b/version_constants.gradle
@@ -0,0 +1,28 @@
+// Copyright (C) 2017 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+ext {
+    // Important: ExoPlayer specifies a minSdkVersion of 9 because various
+    // components provided by the library may be of use on older devices.
+    // However, please note that the core media playback functionality provided
+    // by the library requires API level 16 or greater.
+    minSdkVersion = 9
+    compileSdkVersion = 25
+    targetSdkVersion = 25
+    buildToolsVersion = '25'
+    testSupportLibraryVersion = '0.5'
+    supportLibraryVersion = '25.3.1'
+    dexmakerVersion = '1.2'
+    mockitoVersion = '1.9.5'
+    releaseVersion = 'r2.4.2'
+}