Important: A newer version of Wowza Streaming Engine is available. For more information, see Latest software updates for Wowza Streaming Engine.
Version: Wowza Streaming Engine™ 4.9.0+2 build 20240930165704 released October 2, 2024.
Java support: Wowza Streaming Engine 4.9.0 is compiled using Java 17 (OpenJDK Java SE JRE 17.0.12) but can be used with Java versions 17 or 21. The Wowza Streaming Engine 4.9.0 installer and updater include a Java Runtime Environment (JRE) for Java 21 (OpenJDK Java SE JRE 21.0.3). During updates, we verify that Java 21 is present. If Java 21 isn't detected, the update is canceled, and you can install the JRE 21 provided with the updater before retrying the upgrade. You can manually roll back your Java version if needed. For more details, see Wowza Streaming Engine support for Java.
Latest patch: Wowza Streaming Engine 4.9.0+3 build 20241007144114. See Patch updates to Wowza Streaming Engine 4.9.0 for more information.
New features and functionality in Wowza Streaming Engine 4.9.0
Wowza Streaming Engine is a robust, customizable, and scalable media server software that powers reliable streaming of high-quality video and audio to any device, anywhere. Wowza Streaming Engine 4.9.0 contains enhancements and fixes that improve the functionality of the media server software.
Recompiled Wowza Streaming Engine with Java 17
With Wowza Streaming Engine 4.9.0, we continue the move towards Java 21 and our transition to the latest Long-Term Support (LTS) release of Java. Wowza Streaming Engine 4.9.0 was recompiled using Java 17 (OpenJDK Java SE JRE 17.0.12) but can be used with Java versions 17 or 21.
The installer and updater include a JRE for Java 21 (OpenJDK Java SE JRE 21.0.3). During updates, we verify that Java 21 is present. If Java 21 isn't detected, the update is canceled, and you can install the JRE 21 provided with the updater before retrying the upgrade. You can manually roll back to Java 17 if needed. Older Java versions (16 and below) are no longer supported and cannot be used with Wowza Streaming Engine 4.9.0. For more details, see:
- Wowza Streaming Engine support for Java
- Breaking changes in Wowza Streaming Engine 4.9.0
- Manually install and troubleshoot Java on Wowza Streaming Engine
Updated various third-party libraries
To improve performance and address vulnerabilities as we transition towards Java 21, we updated and modified several third-party libraries used in Wowza Streaming Engine 4.9.0.
Major updates include newer versions of Apache Tomcat 10.1.26, Apache Ant 1.10.14, Apache Commons Codec 1.17.0, Apache Commons Text 1.12.0, Apache Log4J 2.23.1, Jackson 2.17.2, JAXB 4.0.5, Jetty Server 9.4.55, Joda-Time 2.12.7, Restlet 2.4.4, Spring Boot 3.3.1, Spring Framework 6.1.10, and Spring Security 6.2.5. Among others, these libraries were migrated or replaced:
- Apache Commons Lang library was migrated to Apache Commons Lang 3.14.0.
- Apache Taglibs library was replaced by the Jakarta Standard Tag Library API (jakarta.servlet.jsp.jstl-api).
- All APIs and javax.* libraries were migrated to the new jakarta.* namespace to stay up-to-date with the Jakarta EE platform.
Note: Updates to JAR files or external libraries may introduce breaking changes in APIs, such as modified method signatures, removed methods, changes to class structures, or visibility modifiers. This may lead to compilation or runtime errors if the application relies on behavior from the previous API version.
To confirm what specific libraries were added, updated, or removed in the installer and updater, see Wowza Streaming Engine 4.9.0 JAR file changes. We don't recommend reverting to the old JAR files. However, if your use case demands it, you can search the Maven repository for the old version and test it with your implementation.
Launched Wowza Streaming Engine in the Google Cloud Marketplace
Wowza Streaming Engine is now available as a pre-built solution in the Google Cloud Marketplace. Our pre-configured Wowza Streaming Engine for Linux software image runs on the Google Cloud Platform (GCP) and leverages the core Compute Engine GCP web service. With this GCP offering, the Wowza Streaming Engine license is embedded in the software through the marketplace. Google manages all billing for your running instance time and bandwidth consumption. For more, see Set up Wowza Streaming Engine for Linux on Google Cloud Marketplace.
Installation and update considerations for Wowza Streaming Engine 4.9.0
If you're updating to Wowza Streaming Engine 4.9.0 from a base installation of Wowza Streaming Engine 4.8.28 or earlier, see Updating to Wowza Streaming Engine version 4.9.0.
Note: Wowza Streaming Engine 4.8.28 and later doesn't include an updater or installer for macOS.
When using the Wowza Streaming Engine 4.9.0 installer to add a new instance of Wowza Streaming Engine on Windows, you may need to install additional dependencies to ingest SRT MediaCaster streams or use the generic SRT stream targets destination to publish an SRT stream. For more information, see our Ingest and publish an SRT stream guide.
For step-by-step instructions on how to install or update Wowza Streaming Engine, see the following articles:
- Install – Install and configure Wowza Streaming Engine
- Update – Update your Wowza Streaming Engine installation
Breaking changes in Wowza Streaming Engine 4.9.0
Akamai stream targets
Akamai stream targets haven't yet been certified with Wowza Streaming Engine 4.9.0. If you're using Wowza Streaming Engine to send live streams to the Akamai HD network for distributed delivery, use a previous version of Wowza Streaming Engine.
Java version information
With Wowza Streaming Engine 4.9.0, we continued the transition to Java 21. We're using a phased-in approach that aims to leverage various Java 21 benefits, to integrate the latest Java Long-Term Support (LTS) versions, and to avoid breaking changes in future updates. The ultimate goal is to recompile Wowza Streaming Engine using Java 21 and to update all relevant third-party dependencies to their latest versions, providing enhanced security, compatibility, and reliability.
Wowza Streaming Engine 4.9.0 is officially certified, thoroughly tested, and optimized to run seamlessly with the Java 21 JRE. You get the following Java features:
- Installer details – Wowza Streaming Engine 4.9.0 is compiled using Java 17 (OpenJDK Java SE JRE 17.0.12), but new installations include a JRE for Java 21 (OpenJDK Java SE JRE 21.0.3). You can roll back to Java 17 if needed. Older Java versions (16 and below) are no longer supported and cannot be used with Wowza Streaming Engine 4.9.0.
- Updater details – When using the Wowza Streaming Engine 4.9.0 updater, we verify that the Java 21 Virtual Machine (JVM) is present before completing the upgrade. If Java 21 isn't detected on the machine, the update is canceled with a message containing recommended steps. If you need a new version of Java, the updater includes JRE 21 with instructions explaining how to copy it from the root of the installer to the Wowza Streaming Engine installation folder. When you're updating to Wowza Streaming Engine 4.9.0 from a base installation of Wowza Streaming Engine 4.8.28 or earlier, check these considerations.
- Supported Java versions – If you prefer, you can manually install a different Java version. We support Java versions 17 or 21 with Wowza Streaming Engine 4.9.0.
While we tested Wowza Streaming Engine 4.9.0 to run with the Java 21 Runtime Environment (JRE), we didn't recompile it using Java Development Kit (JDK) 21. If you build a custom module using Java 21, it may not work with Wowza Streaming Engine if your source code includes Java 21 features.
Note: New installations of Wowza Streaming Engine 4.8.28 and later deliver generational support for the Z Garbage Collector (ZGC). To use Java 21 with Generational ZGC on Windows, you must be running a 64-bit version of Windows 10 (version 1803 or later) or Windows Server 2019 or later. You also need a 64-bit JVM.
If your Wowza Streaming Engine workflow uses custom modules or plugins, we suggest testing them with Wowza Streaming Engine 4.9.0 in a non-production environment before updating your media server software. The following Java modules are included with the JRE for the Wowza Streaming Engine 4.9.0 installer:
- java.base
- java.datatransfer
- java.desktop
- java.instrument
- java.logging
- java.management
- java.management.rmi
- java.naming
- java.prefs
- java.rmi
- java.scripting
- java.scripting.jgss
- java.security.sasl
- java.sql
- java.transaction.xa
- java.xml
- jdk.crypto.cryptoki
- jdk.crypto.ec
- jdk.httpserver
- jdk.management
- jdk.management.agent
- jdk.naming.rmi
- jdk.unsupported
- jdk.xml.dom
- jdk.attach (available with Wowza Streaming Engine 4.8.28 and later)
- jdk.internal.jvmstat (available with Wowza Streaming Engine 4.8.28 and later)
- jdk.jcmd (available with Wowza Streaming Engine 4.8.28 and later)
- jdk.jfr (available with Wowza Streaming Engine 4.8.28 and later)
- java.net.http (available with Wowza Streaming Engine 4.8.28 and later)
If you have other dependencies, you must install a Java 17 JRE or JDK for Wowza Streaming Engine 4.9.0 that includes these dependencies. For more information, see Manually install and troubleshoot Java on Wowza Streaming Engine.
You can also check the Wowza Streaming Engine support for Java page to learn more about the different Java versions we support.
Detailed list of changes in Wowza Streaming Engine 4.9.0
These changes were made since the release of Wowza Streaming Engine 4.8.28:
- Added support to generate constant frame rate outputs for WebRTC sources while using zero-copy with the AMD Xilinx Alveo U30 card.
- Added an optional configuration to customize the storage location for installation logs when performing a silent installation of Wowza Streaming Engine.
- Updated the AWS SDK for Java to version 2.26.19.
- Deprecated the setAlgorithm() method in favor of setScheme() to fix an issue with MPEG-DASH DRM streams failing when the encryption scheme and algorithm weren't consistently set.
- Updated the Java API reference documentation by removing the frames view.
- Launched a pre-configured Wowza Streaming Engine for Linux software image in the Google Cloud Marketplace.
- Recompiled Wowza Streaming Engine with Java 17.
- Updated several major Java frameworks and libraries used in Wowza Streaming Engine.
- Fixed an issue with the search feature used for the Java API reference documentation.
- Fixed an issue with the webrtc-example repository that impacted usage of the WebRTC publish and playback example pages with Wowza Streaming Engine in Google Chrome 127.
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Fixed an issue preventing AWS authentication and Amazon S3 Media Cache content retrieval when using the AWS SDK for Java with environment variables and named profiles.
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Fixed an issue incorrectly setting the PSSH version to 0 in MPEG-DASH init segments even when another value is assigned with the cencInfo.setPSSHVersion() method.
Known issues with Wowza Streaming Engine 4.9.0
For a detailed list of currently known issues, see Known issues with Wowza Streaming Engine.
Patch updates to Wowza Streaming Engine 4.9.0
Between production releases, Wowza occasionally provides patches to fix bugs or regressions in the latest production release. You can deploy these patches in production environments and workflows for long-term stability.
Note: AWS, Docker, Google, and Azure cloud platform images include these patch updates.
Wowza Streaming Engine 4.9.0+3
The latest patch release with updates to Wowza Streaming Engine 4.9.0 is available as Wowza Streaming Engine 4.9.0+3 build 20241007144114 on our Downloads page or from the Downloads tab of My Account.
Changes since Wowza Streaming Engine 4.9.0+2
- Fixed an issue related to deprecated SSL attributes in Apache Tomcat 10.1.26 that prevented successful SSL configuration for Wowza Streaming Engine Manager.
