Vonage Video API Android SDK release notes

New features and changes

Version 2.34.0 -- May 2026

This version adds new network condition metrics to the client observability feature, providing detailed visibility into network performance and quality indicators. These metrics complement the publisher and subscriber statistics introduced in 2.33.0 and help developers proactively monitor network conditions affecting video quality, diagnose connectivity issues, and make informed decisions about potential adjustments. For more information, see this documentation.
This version adds support for Live Captions Translation, which provides real-time subtitle translation during video calls. Each participant can independently select their preferred translation language. This feature supports the full AWS Translate language set. This is a Private Beta feature—to enable Live Captions Translation for your project, contact us. For more information about Live Captions, see this documentation.
This version fixes an issue that prevented Vonage Noise Suppression audio transformers from working on Android.
This version fixes an audio issue that occurred when joining a video session while already on an active carrier call.

Version 2.33.0 -- February 2026

This version adds new publisher and subscriber statistics including: video layer metrics for simulcast/SVC and transport statistics for publishers; video freeze/pause tracking and decoding metrics for subscribers; and video quality changed events for both publishers and subscribers. For more information, see this documentation.
This version adds full support for network statistics of senders for subscribers in video sessions (which was previously in beta). For more information, see this documentation.
This version adds publisher degradation preference settings to control how video quality adapts when bandwidth or CPU resources are limited. For more information, see this documentation.
In this version we are deprecating the BaseVideoRenderer.Frame#getMetadata() and several BaseVideoCapturer methods that provide video frame metadata. See the reference documentation for details. These will be removed in future minor releases.

Version 2.32.1 -- December 2025

Fixed a crash on certain devices running Android 7.x and 8.x caused by OS-specific API incompatibilities.
Fixed a crash during automatic session migrations that could occur only in limited timing scenarios.

Version 2.32.0 -- November 2025

This version adds new methods to monitor the network statistics of a sender in video sessions, giving receivers insight into the sender’s available bandwidth and connection performance. For more information, see this documentation. This is a beta feature.
This version adds new methods to configure the preferred video codecs for publishers, which gives you fine-grained control over how video codecs are prioritized during session negotiation. For more information, see this documentation.

Version 2.31.1 -- October 2025

This version fixes an error where apps crashed when running on certain devices enabled with ARM64/Exynos chipsets.
This version fixes an error where apps crashed due to publishers stop publishing as part of session disconnect callbacks.
This version fixes an issue where, in some cases, sessions could not connect due to wrong credentials.
This version fixes an issue where, in some cases, sessions could not connect due to expired certificates.

Version 2.29.3 -- September 2025

This version adds support for both 4 KB and 16 KB page size devices. For more information, see the developer and client requirements.

Version 2.31.0 -- September 2025

This version adds full support for the VP9 codec with Scalable Video Coding (SVC) in routed sessions (which was previously in beta).
This version adds full support for session migration (which was previously in beta). See the Session.Builder.setSessionMigration() method. For more information, see this documentation.
This version adds new methods to configure video bitrate settings for publishers. For more information, see this documentation.
This version adds new moderation methods for forcing clients to disconnect. For more information, see our documentation for Moderation.
This version adds new publisher settings to control audio capture while muted so the publisher receives audio level updates when not publishing audio. This is useful for implemeting features such as speaking while muted. For more information, see this documentation.
This version adds support for integrating Android ConnectionService without implementing a custom audio driver. For more information, see this documentation.
This version fixes CVE-2025-5283, a security vulnerability in the libvpx library, part of WebRTC. It is recommended that customers update to incorporate this fix.
In this version we are deprecating the PublisherKit.update() and SubscriberKit.update() methods. These methods will be removed in future minor releases. For more information, see the reference documentation.
In this version we are deprecating the OpenTokConfig.getRTCStatsReportFilePath() and OpenTokConfig.setRTCStatsReportFilePath() methods. These method will be removed in future minor releases.

Version 2.30.1 -- May 2025

This version fixes an issue where, in some cases, sessions could not connect.

Version 2.30.0 -- May 2025

This version supports both 4 KB and 16 KB page size devices. For more information, see our documentation for developer and client requirements.
This version adds quality improvements for the background blur and background replacement APIs.
This version adds VP9 codec support for end-to-end encryption.
This version adds support for camera controls such as torch and zoom. See the Publisher.setCameraTorch() and Publisher.setCameraZoomFactor() methods. For more information, see the torch and zoom camera control documentation.
This version adds support for session migration. See the Session.Builder.setSessionMigration() method. For more information, see this documentation. This is a beta feature.

Version 2.29.2 -- March 2025

This version fixes an error where apps crashed when running on Android versions prior to API level 29.
This version adds more improvements on how Session and Publisher instances handle video capturing when the pause and resume states change in the Activity lifecycle when transitioning in and out of the background.
This version fixes an issue where audio was routed to the device loudspeaker when selecting the headset speaker.

Version 2.29.1 -- February 2025

This version fixes an issue where sessions could not connect, in some cases, because of network connectivity problems.
This version fixes an issue where sessions could not connect when using the IP Proxy feature through HTTP proxy servers that require the server name the client is attempting to connect to during handshaking.
This version fixes an issue where an error was not returned when sending signals with a publisher-only token.
This version fixes an issue on Android 15 where network connections were lost after applications ran in the background for a few minutes.
This version adds improvements on how Session and Publisher instances handle video capturing when the pause and resume states change in the Activity lifecycle when transitioning in and out of the background.
This version requires the ACCESS_NETWORK_STATE permission, and on Android API level 35+ it also requires the REQUEST_IGNORE_BATTERY_OPTIMIZATIONS permission. Check out the full list of required permissions.

Version 2.29.0 -- January 2025

This version of the SDK uses an updated version of WebRTC 121, which includes improvements in performance, stability and security. The update also leverages WebRTC upgrade optimizations, including bug fixes, performance enhancements of audio and video media codecs, better network adaptation and improved browser compatibility.
This version adds performance improvements for Single Peer Connection.
This version fixes an issue where, in some cases, toggling audio or video immediately after publishing would prevent video from being displayed.
This version adds support for the VP9 codec with Scalable Video Coding (SVC) in routed sessions. This is a beta feature.

Version 2.28.4 -- November 2024

This version fixes an issue where some devices could not subscribe to VP9 video.

Version 2.28.3 -- September 2024

This version fixes an issue where, in some cases, the audio level stayed the same when the publisher was muted.
This version fixes an issue where custom audio devices could potentially cause a crash.
This version fixes an issue where, in some cases, audio from web client SDK users was garbled.
This version fixes an error that occurred when using the application context to initialize a publisher.

Version 2.28.2 -- August 2024

When using this version, you will need to specify sourceCompatibility and targetCompatibility to use Java 17. You can do this by modifying the app's build.gradle file and adding the following code snippet to the android section:
```
compileOptions {
    sourceCompatibility JavaVersion.VERSION_17
    targetCompatibility JavaVersion.VERSION_17
}
```
This version fixes an issue where the video resolution was not updating when devices were rotated.
This version fixes an issue where video was briefly stuttering after connecting to another user.

Version 2.28.1 -- July 2024

This version fixes an issue where video would freeze if it was cycled repeatedly.

Version 2.28.0 -- June 2024

This version adds support for Single Peer Connection. When enabled, it reduces OS resource consumption, improves rate control, and in the case of mobile native devices, supports large sessions. See the documentation for the Session.Builder.setSinglePeerConnection() method.
This version adds support for advanced noise suppression. This uses the Vonage Media Library to provide enhanced noise cancellation. See the documentation for the Publisher.setAudioTransformers() method. This was previously a beta feature.
This version requires a minimum Android API level of 24.
This version fixes an issue where, in some cases, the publisher was destroyed when video was muted.

Version 2.27.2 -- June 2024

This version adds support for reading the Certificate Authority certificates in the trust store of the host so that it can use them as valid root certificates when connecting to OpenTok services.
This version adds support for advanced noise suppression. This uses the Vonage Media Library to provide enhanced noise cancellation. See the documentation for the Publisher.setAudioTransformers() method. This is a beta feature.
This version reduces the size of the SDK by removing the Vonage Media Library code. In order to use methods that use the Vonage Media Library, you must load the Vonage Media Library separately from the Vonage Video Android SDK. This includes using the PublisherKit.setAudioTransformers() and PublisherKit.setVideoTransformers() methods to apply audio and video transformers to the stream. For more information, see Vonage Media Library integration.
This version fixes a crash.

Version 2.27.1 -- January 2024

This version fixes a bug where canSubscribe returned incorrect information in Session.getCapabilities().
This version fixes an issue where the state of captions was not properly updated for subscribers under certain circumstances.
This version fixes some crashes.

Version 2.27.0 -- December 2023

This version adds support for the Vonage Media Processor library and custom media transformers. You can apply custom video and audio transformations to video and audio streams using the PublisherKit.setVideoTransformers() and PublisherKit.setAudioTransformers() methods. This was previously a beta feature.
This version adds support for publisher audio fallback. This was previously a beta feature. See the Publisher audio fallback documentation.
This version adds support for the VP9 codec in relayed sessions. For more information, see the Video Codecs documentation.
This version adds support for end-to-end encryption. You can enable end-to end-encryption using the Session.setEncryptionSecret() method. For more information, see the End-to-End Encryption documentation.
This version adds support for adaptive media routing. For more information, see the Adaptive Media Routing documentation.
This version adds some memory management improvements.
This version fixes an issue where certain events were being dropped.

Version 2.26.2 -- November 2023

This version adds support for publisher audio fallback. This is a beta feature. See the Publisher audio fallback documentation.
This version adds more support for the Vonage Media Processor filters. The background blur filter now accepts a custom radius option. And there is a new background replacement filter. You can create these video filters using the VideoTransformer(String name, String properties) constructor. This is a beta feature.

Version 2.25.4 -- October 2023

This version fixes an issue where it sometimes took longer than expected to disconnect from a session.

Version 2.24.3 -- October 2023

This version fixes an issue where it sometimes took longer than expected to disconnect from a session.

Version 2.26.1 -- October 2023

This version fixes an issue where video dimensions were incorrect if users muted video.
This version fixes a crash that occurred if users published and unpublished video several times in rapid succession.
This version fixes an issue where, in some cases, users were unable to connect to sessions with both custom TURN servers and IP Proxies enabled.
This version fixes an issue where, in some cases, using custom audio devices was causing publishing failures.
This version fixes some memory leaks.
This version fixes an issue where it sometimes took longer than expected to disconnect from a session.
This version fixes an issue where, in some cases, setting the microphone to mute was causing a crash.

Version 2.26.0 -- August 2023

This version adds support for the Vonage Media Processor library and custom media transformers. You can apply custom video and audio transformations to video and audio streams using the PublisherKit.setVideoTransformers() and PublisherKit.setAudioTransformers() methods. Using custom media transformers was previously a beta feature. (Using the background blur transformer remains in beta).
This version adds support for Live Captions. See the docs for PublisherKit.setPublishCaptions() and SubscriberKit.setSubscribeToCaptions(). This was previously a beta feature.
This version fixes an issue where the SDK was crashing for subscribers on relayed sessions published using the Android SDK.

Version 2.25.3 -- July 2023

This version fixes some inconsistent cleanup-related audio callbacks for custom devices, which sometimes lead to distorted audio.
This version fixes an issue where publishers were ignoring custom framerate settings.
This version fixes a memory leak.

Version 2.25.2 -- May 2023

This version requires that applications target a minimum Android level of 23.
This version adds support for the Vonage Media Processor library and custom media transformers. You can apply custom video and audio transformations to video and audio streams using the PublisherKit.setVideoTransformers() and PublisherKit.setAudioTransformers() methods. This is a beta feature.
This version adds support for Live Captions. See the docs for PublisherKit.setPublishCaptions() and SubscriberKit.setSubscribeToCaptions(). This is a beta feature.
This version fixes an issue where captions were enabled by default.
The onStreamHasCaptionsChanged() method was removed from the StreamPropertiesListener interface and moved to the new StreamCaptionsPropertiesListener interface. If you implement the StreamPropertiesListener interface, you will need to remove this method. For the Live Captions feature, you can implement StreamCaptionsPropertiesListener.onStreamHasCaptionsChanged() method. This is a beta feature.

Version 2.25.1 -- May 2023

This version fixes an issue where, for certain models of Bluetooth headsets, there was a delay between Bluetooth reconnects.
This version fixes an issue where occasionally the app would crash if it was publishing for a very long time.
This version fixes some memory leaks.

Version 2.25.0 -- April 2023

This version of the SDK uses an updated version of WebRTC 99, which includes improvements in performance and stability.
A new onStreamHasCaptionsChanged() method was added to the StreamPropertiesListener interface in 2.24.2. If you implement this interface, you will need to implement this method. This is a beta feature.

Version 2.24.2 -- February 2023

This version fixes an issue where starting a session with muted video would disable scalable video.
This version fixes an issue where the camera LED was not turned off when the video was muted.
This version fixes an issue where audio would remain muted for users under certain circumstances.

Version 2.24.1 -- December 2022

This version fixes an issue where, in some cases, H.264 streams in relayed sessions did not adapt to network conditions.

Version 2.24.0 -- October 2022

This version of the SDK uses WebRTC 99, which includes improvements in performance and stability.
This version fixes an issue in which participants could not hear audio published by clients using certain models of Huawei devices.
This version fixes an intermittent crash when cycling the camera.
This version fixes an issue in which applications could not connect to a session when IP Proxy was enabled.
This version fixes an issue when AES-256 was enabled and applications could not connect to clients using on Safari 15.3 and below.

Version 2.23.1 -- August 2022

This version fixes an issue that caused excessive bandwidth usage by streams in relayed sessions.
This version fixes an issue where an app may crash when Bluetooth permissions are not enabled.
This version fixes an issue where the Bluetooth connection is lost after a session reconnection.

Version 2.23.0 -- July 2022

Adding support for Full High Definition (1920x1080-pixel) resolution. You can specify High1080p as the resolution value you pass into the Publisher.CameraCaptureResolution()method.
This version adds the ability to enable per-subscriber audio levels. See the docs for the SubscriberKit.setAudioVolume() and SubscriberKit.getAudioVolume() methods. This was previously a beta feature.
This version implements scalable video support for screen sharing. See the PublisherKit.Builder.scalableScreenshare() method. This was previously a beta feature.
This version fixes an issue where publishers of 1080p or 720p streams to routed sessions published two scalable video layers instead of three.
This version fixes an issue in Android 12 where apps may crash if Bluetooth permissions are not included.
This version fixes an issue where the app crashes if an unregistered audio device is used.

Version 2.22.3 -- May 2022

This version fixes an issue where the Android binary size was too large.

Version 2.22.2 -- April 2022

This version adds the ability to enable per-subscriber audio levels. See the docs for the SubscriberKit.setAudioVolume() and SubscriberKit.getAudioVolume() methods. This is a beta feature.
This version implements scalable video support for screen sharing. See the PublisherKit.Builder.scalableScreenshare() method. This is a beta feature.

Version 2.22.1 -- March 2022

This version removes support for DTLS 1.0.
For apps that use the IP proxy add-on, this version fixes an issue where some logs were bypassing the IP proxy.

Version 2.22.0 -- February 2022

This version adds the ability to enable Opus DTX. Enabling Opus DTX can reduce bandwidth usage in streams that have long periods of silence. This was previously a beta feature. See the docs for the PublisherKit.Builder.enableOpusDtx() method.
This version removes support for cipher TLS_RSA_WITH_3DES_EDE_CBC_SHA.
When using this version, you will need to specify sourceCompatibility and targetCompatibility to use Java 11. You can do this by modifying the app's build.gradle file and adding the following code snippet to the android section:
```
compileOptions {
    sourceCompatibility JavaVersion.VERSION_11
    targetCompatibility JavaVersion.VERSION_11
}
```

Version 2.21.5 -- January 2022

This fixes an issue where Bluetooth was not routed in some scenarios.
Additionally, applications targeting API level 31 and above now require permission BLUETOOTH_CONNECT. Check out the full list of required permissions.

Version 2.21.4 -- January 2022

This version fixes an issue where applications built targeting API level 31 crash. Additionally, applications targeting API level 31 and above now require permission READ_PHONE_STATE. Check out the full list of required permissions.

Version 2.21.3 -- November 2021

This version fixes an issue where calling Publisher.CycleCamera() may fail on certain models of Samsung phones.

Version 2.21.2 -- November 2021

This version fixes an issue in relayed sessions where the audio bitrate set with the PublisherKit.Builder.audioBitrate() method was not being respected.

Version 2.21.1 -- October 2021

This version adds the ability to enable Opus DTX. Enabling Opus DTX can reduce bandwidth usage in streams that have long periods of silence. This is a beta feature. See the docs for the PublisherKit.Builder.enableOpusDtx() method.

Version 2.21.0 -- October 2021

This version adds the ability for moderators to mute participants. This was previously a beta feature. See the docs for the Session.forceMuteAll(), Session.forceMuteStream(), and Session.disableForceMute() methods. Note that the Session.forceMuteAll() and Session.forceMuteStream() methods no longer include an options parameter, like they did in the beta version.
This version adds the ability to dynamically change how published video streams are optimized. This can improve video performance for some screen-sharing streams and in other conditions. This was previously a beta feature. See the docs for the BaseVideoCapturer.getVideoContentHint() and BaseVideoCapturer.setVideoContentHint() methods.
This version fixes an intermittent issue that caused applications to crash when a subscriber joins a session.

Version 2.20.3 -- November 2021

This version fixes an issue in relayed sessions where the audio bitrate set with the PublisherKit.Builder.audioBitrate() method was not being respected.

Version 2.20.2 -- August 2021

This version adds the ability to dynamically change how published video streams are optimized. This can improve video performance for some screen-sharing streams and in other conditions. This is a beta feature. See the docs for the BaseVideoCapturer.getVideoContentHint() and BaseVideoCapturer.setVideoContentHint() methods.
This version fixes an issue where an app may crash when gathering audio and video statistics for a subscriber.

Version 2.20.1 -- May 2021

This version fixes an issue where Android packages could not be installed correctly from the Maven Central repository.

Version 2.20.0 -- May 2021

This version adds the ability for moderators to mute participants. This is a beta feature. See the docs for the Session.forceMuteAll() and Session.forceMuteStream() methods.
This version fixes an issue where the Session.unpublish() method may fail if called immediately after publishing.

Version 2.19.1 -- April 2021

This version fixes an issue where a potential memory leak may occur when publishing stops.

Version 2.19.0 -- February 2021

This version of the SDK uses WebRTC 84, which includes improvements in performance and stability.
This version adds support for RTC audio and video statistics for publishers and subscribers. See the docs for the OTPublisherKit.getRtcStatsReport() and OTSubscriberKit.getRtcStatsReport() methods.
This version fixes the following issues:
- The audio bitrate value set for publishers was handled incorrectly internally.
- The SDK was unable to publish in Pixel 4 devices running API Level 30.

Version 2.18.1 -- October 2020

This version fixes the following issues:
- The PublisherKit.onError() callback was not being called in some scenarios where publishing failed.
- The BaseVideoCapturer.provideBufferFrame() method was not interpreting some formats correctly.
- The SDK was not proxying all communications correctly when the IP Proxy feature was being used.
- The SDK ProGuard rules were causing conflicts with other libraries.
- The SDK ProGuard rules were marking internal attributes as public.

Version 2.18.0 -- August 2020

This version adds support for the IP Proxy feature.
This version adds the following methods and properties:
- PublisherKit.onStop()
- PublisherKit.onRestart()
- BaseVideoCapturer.onStop()
- BaseVideoCapturer.onRestart()
Please see the documentation for details.
From this version on, RGBA video frames are supported in custom video capturers.
This version fixes the following issues:
- Apps could crash when disconnecting from a session when calling the PublisherKit.finalize() method.
- A regression in the Frame Metadata API where the metadata was not being transmitted could cause apps to crash when using the metadata associated with a video frame.
- Restore the Stream.compareTo() method, which was removed in 2.17.0.
- The Android video view was not properly rendered when changing from scale type FILL to FIT.
- An error getting the type of video for publishers.

Version 2.17.2 -- July 2020

This version fixes an issue that could cause apps to crash while trying to initiate audio capturing.

Version 2.17.1 -- June 2020

This version fixes the following issues:
- The sessionId property was null for a Session instance returned from calling Publisher.getSession() or Subscriber.getSession().
- AudioDeviceManager.getAudioDevice().getOutputMode() returned the wrong value when a Bluetooth device was connected prior to an app connecting to an OpenTok session.

Version 2.17.0 -- April 2020

This version adds the following methods and properties:
- PublisherKit.onAudioLevelUpdated(float)
- SubscriberKit.onAudioEnabled()
- SubscriberKit.onAudioDisabled()
- SubscriberKit.StreamListener.onAudioDisabled()
- SubscriberKit.StreamListener.onAudioEnabled()
- BaseVideoCapturer.CaptureSettings.mirrorInLocalRender
- BaseAudioDevice.getBluetoothState()
Please see the documentation for details.
This version deprecates the following APIs:
- Session.Builder.setApiUrl(URL)
- PublisherKit.destroy()
- SubscriberKit.destroy()
- SubscriberKit.onDisconnected()
- Stream.getSession()
- Publisher.startPreview()
This version can be used along with Google's WebRTC Android library in the same application.

Version 2.16.6 -- March 2020

This version fixes the following issues:
- Apps could crash while trying to publish without a valid camera interface.
- Apps could crash due to a bug in the default audio device implementation.
- Apps could experience issues capturing and rendering audio when the device receives an incoming phone call.

Version 2.16.5 -- February 2020

This version fixes the following issues:
- Apps could crash when pausing and resuming audio.
- We removed some URLs from the code that were preventing apps from receiving FirstNet certification.
- Calling Session.onResume() before calling Session.onPause() could result in video dropping out.

Version 2.16.4 -- February 2020

This version fixes the following issues:
- Apps could crash when a disconnecting from a session if a PSTN call was in progress.
- The SDK was not proxying all HTTP requests when the IP Proxy feature was being used.
- The SDK was reporting incorrect values for the publisher's stream properties after the stream properties had changed.

Version 2.16.3 -- December 2019

This version fixes the following issues:
- Apps could crash when disconnecting from a session with more than one subscriber.
- Apps could crash because some callbacks threw a NullPointerException.

Version 2.16.2 -- September 2019

This version fixes the following issues:
- Data for published streams is not showing up in OpenTok Inspector.
- Apps crash when calling the SubscriberKit.getStream() method in the SubscriberKit.onDisconnect() callback, because the method throws a NullPointerException.
- Apps crash or freeze when destroying publishers and subscribers after disconnecting from a session.
- When using TextureView, if a publisher or subscriber view is removed from the parent layout, adding the view again results in black views for both publishers and subscribers.
- Unsubscribing a subscriber when its stream is dropped results in an error.
- When using a TextureView, publisher and subscriber views were not being displayed when an app came into the foreground from the background on devices running Android 6 or below.
- Apps could crash shortly after connecting to an OpenTok session.
- When communicating with the OpenTok logging infrastructure, the SDK was creating a temporary cert.pem file.

Version 2.16.1 -- June 2019

This version fixes the following issues:
- The hasAudio and hasVideo properties of a subscriber's stream property were not updated when the stream's publisher unpublished audio and video.
- The SDK could freeze when disconnecting from a session after disconnecting a publisher.
- Video rendering was not resizing correctly when a TextureView containing the video was resized.
- There were issues with the frame rate and autofocus when using the back camera.

Version 2.16.0 -- April 2019

When using this version, you will need to specify sourceCompatibility and targetCompatibility to use Java 8. You can do this by modifying the app's build.gradle file and adding the following code snippet to the android section:
```
compileOptions {
    sourceCompatibility JavaVersion.VERSION_1_8
    targetCompatibility JavaVersion.VERSION_1_8
}
```
The android.hardware.camera.autofocus feature is no longer required in the Android manifest for your app.
This version of the SDK uses WebRTC 71, which includes improvements in performance and stability.
This version fixes the following issues:
- Using a device's volume button while an app using the OpenTok SDK is in the background resulted in the incorrect UI being displayed on the device. This also could cause other issues, such as errors if tries to record video.
- If you connected to a session with a subscriber token and attempted to publish, the application would crash.
- Subscriber.getStream() would return null when the SessionListener.onStreamDropped() method is called.

Version 2.15.3 -- January 2019

The OpenTok Android SDK now requests the android.permission.READ_PHONE_STATE permission. This additional permission was added in version 2.15.0. Your app can remove any permissions requested by the OpenTok Android SDK that it does not use. See this post and this Android documentation.
This version fixes the following issues:
- In Android 4.x, an application could crash if it tried to remove the android.permission.READ_PHONE_STATE permission that is now used by the SDK.
- Calling Session.getCapabilities() would cause an application to crash.

Version 2.15.2 -- December 2018

This version fixes an issue that caused handset audio output (using BaseAudioDevice.OutputMode.Handset) to fail.

Version 2.15.1 -- November 2018

This version fixes an issue in which a subscriber would not receive audio or video from a stream that was initially published without audio or video and subsequently had them enabled (by the publisher).

Version 2.15.0 -- October 2018

The new MediaUtils.SupportedCodecs.getSupportedCodecs() method lets you determine the video codecs supported on the device.
The SubscriberKit.onVideoDisabled() method can be called with the reason parameter set to the new SubscriberKit.VIDEO_REASON_CODEC_NOT_SUPPORTED value, which indicates that a subscriber's video was disabled because the stream uses a video codec (such as H.264) not supported on the device.
The new PublisherKit.setAudioStatsListener() and PublisherKit.setVideoStatsListener() methods let you monitor audio and video statistics for a publisher.
This version adds support for the x86_64 architecture. This improves performance on devices like the Vuzix M300.
Partners that have the allowed IP list add-on feature enabled for an OpenTok project should call the new Session.Builder.setIpWhitelist() method (passing in true) when instantiating a Session object.

Version 2.14.3 -- August 2018

This version fixes the following issues:
- Apps crash upon receiving a signal sent using the OpenTok REST API or the OpenTok server SDKs.
- Apps could crash if the dimensions of a subscribed video change.

Version 2.14.2 -- August 2018

This version fixes a critical security vulnerability in the HTTP library. It is recommended that customers update to incorporate this fix.

Version 2.14.1 -- July 2018

This version fixes the following issues:
- When resizing a TextureView containing an OpenTok video, the resized view does not scale the whole video correctly and results in a cropped video. However, when resizing a GLSurfaceView containing an OpenTok video, the resized view produces a properly scaled video. This issue was introduced in v2.14.0.
- Sessions sometimes fail to automatically reconnect This issue was introduced in v2.14.0.

Version 2.14.0 -- April 2018

This version adds a metadata parameter to each of the BaseVideoCapturer methods for providing video frames to a custom video capturer: BaseVideoCapturer.provideByteArrayFrame(), BaseVideoCapturer.provideIntArrayFrame(), BaseVideoCapturer.provideBufferFrame(), and BaseVideoCapturer.provideBufferFramePlanar(). When implementing a custom video capturer, you can set this parameter to provide metadata for a video frame. (For backwards compatibility, the BaseVideoCapturer class retains the existing versions of each of these methods, which do not include the metadata parameter.) When implementing a custom video renderer, you can use the new Frame.getMetadata() method to get the metadata.
This version fixes the following issues:
- Calling Subscriber.getSession() method after the Session object is destroyed could cause an app to crash.
- The videoPacketsLost value reported by the SubscriberKit.VideoStatsListener.onVideoStats() method was always set to 0.
- The SDK failed to work on networks with proxy servers.

Version 2.13.0 -- January 2018

This version adds H.264 support on devices that support H.264 encoding (either via hardware or software). Software encoding is only supported on newer Android versions running Android 6+ (Marshmallow). This means that Android clients can interoperate with Safari clients (and others) in Safari OpenTok projects.
This version fixes the following issues:
- Subscribing to high-resolution video would sometime result in cropping of the video.
- Videos that use the scalable video feature would sometimes magnify. Scalable video is supported in sessions that use the OpenTok media router.

Version 2.12.1 -- October 2017

This version includes improvements for performance and stability.

Version 2.12.0 -- September 2017

Android 8.0 (Oreo) support.
This version fixes the following issues:
- Publishing an audio-only stream after previously publishing video fails.
- An error getting camera parameters when using the default camera capturer can cause the app to crash.
- Audio output might go to the phone speaker when it is set to use the headset speaker.
- Reusing a publisher without unpublishing from the first session can cause the app to crash.

Version 2.11.1 -- July 2017

This version corrects the frame rate used by some cameras. In previous versions, some cameras used a frame rate that caused the video to be dark.

Version 2.11.0 -- April 2017

Audio-tuning API. Use the PublisherKit.Builder.audioBitrate(bitsPerSecond) method to set the audio bitrate for a publisher. (For more information, see the reference documentation.)
This version adds errors for stream and connection limits. These errors are useful in large OpenTok sessions:
- If you call Session.connect() when the session's connection limit has been exceeded, the Session.SessionListener.onError() method is called with an OTError object that has an error code set to OpentokError.ErrorCode.SessionConnectionLimitExceeded.
- If you call Session.Subscribe() when the session's stream limit has been exceeded, the SubscriberKit.SubscriberListener.onError() method is called with an OTError object that has an error code set to OpentokError.ErrorCode.SubscriberStreamLimitExceeded.
See the OpenTok developer guide on live interactive video broadcasts.
The Session.SessionOptions.isHwDecodingSupported() method is deprecated, and the method has no functionality. The SDK no longer supports using the Android MediaCodec class to decode video.
- This version of the SDK uses WebRTC 56, which includes improvements in performance and stability.

This version fixes the following issues:

Cameras used by OpenTok publishers are now released when you call Session.onPause(). Publishers reacquire cameras when you call Session.onResume().
The camera display of a publisher was too dark on the Google Pixel. We added further improvements to those made in the 2.10.1 release.

Version 2.10.1

This version fixes the following issues:

The camera display of a publisher was too dark on the Google Pixel.
Switching the audio driver to use handset (BaseAudioDevice.OutputMode.Handset) was not working.
The PublisherKit.setCapturer(capturer) method did not work properly.

Version 2.10.0

This version adds new builder classes for constructing Session, Publisher, PublisherKit, Subscriber, and SubscriberKit objects:
- Session.Builder
- Publisher.Builder
- PublisherKit.Builder
- Subscriber.Builder
- SubscriberKit.Builder
These classes let you define any combination of initialization settings to be used when creating Session, Publisher, PublisherKit, Subscriber, and SubscriberKit objects.

The existing constructor methods of the Session, Publisher, PublisherKit, Subscriber, and SubscriberKit classes are deprecated.
This version of the OpenTok Android SDK is supported on Android 4.1+ (Jelly Bean, API Level 16). For a list of supported devices, see the Developer and client requirements section of the OpenTok Android SDK page at the Vonage Video API developer center.
This version fixes an issue in which the video for a publisher was mirrored when using the back camera (on some devices).

Version 2.9.1

This version fixes an issue with automatic reconnection when switching between networks. For more information on automatic reconnection, see https://tokbox.com/developer/guides/connect-session/android/#automatic_reconnection.

Version 2.9.0

This version adds 64-bit support (the armeabi64-v8a architecture).
The OpenTok Media Router now includes the OpenTok scalable video feature (previously in beta). For more information, see the OpenTok Media Router documentation.
This version adds a Session.getCapabilities() method. Use this method to check whether the client can publish streams to an OpenTok session, based on the role assigned to the token used to connect to the session.
Please upgrade your apps to use the latest versions of the OpenTok server SDKs. These now use JSON web tokens (JWT) for authentication. JWT provides increased security along with standards-based encoding, decoding, and verification. The old form of authentication will expire in July 2017. Also, if you use the OpenTok REST API (instead of the server SDKs), please use JWT to authenticate calls to the OpenTok REST methods (see this topic on authentication).

Version 2.8.2

Fixed bug where the publisher audio-video state was not preserved between application lifecycle events.
Fixed a potential memory leak in subscribers.
Fixed a Bluetooth routing issue on certain devices.
Fixed bug in which custom video renderers resulted in black videos.

Version 2.8.1

This version fixes an audio-video synchronization issue in version 2.8.0.
Note that we have added TLS support to OpenTok TURN servers. This fixes media streaming for clients behind network firewalls that block non-TLS traffic over port 443.

Version 2.8.0

The library is now provided as an aar file (not a jar file).
This version add support for Bluetooth SCO profile devices (earpieces and headsets) in the default audio driver.
This version improves quality for published audio.
The new Publisher.startPreview() method lets you display a publisher's camera video in the Publisher's view before it starts streaming video.
The new Session.SessionOptionsProvider interface lets you decide when to use hardware video decoding.
The Publisher.swapCamera(), Publisher.getCameraId(), and Publisher.setCameraId() methods are deprecated. You should use the new Publisher.cycleCamera() method to cycle between cameras, if there are multiple cameras on the device. Use the new BaseVideoCapturer.CaptureSwitch interface to define the behavior of the Publisher.cycleCamera() method in a custom video capturer.
The PublisherKit.setCapturer(BaseVideoCapturer capturer) method is deprecated. Instead, use the PublisherKit.capturer property when creating a custom PublisherKit implementation. Or use the new Publisher(Context context, String name, BaseVideoCapturer capturer) constructor.
This version of the SDK uses WebRTC 49.

Version 2.7.0

Setting the frame rate and resolution for a published stream using the default camera video capturer. A new version of the Publisher constructor, Publisher(context, name, resolution, fps), includes parameters for setting the frame rate and resolution of the stream.
New methods for getting audio and video statistics for a stream. You can now set listeners to monitor the following statistics for a subscriber's stream:
- Total audio and video packets lost
- Total audio and video packets received
- Total audio and video bytes received
See the documentation for the SubscriberKit.setAudioStatsListener(AudioStatsListener listener) and SubscriberKit.setVideoStatsListener(VideoStatsListener listener) methods.
Added support for armeabi-v7a.
This version requires Android 4.1 (Jelly Bean, API Level 16) or later.

Version 2.6.0

Added the Session.reportIssue() method. You can call this method when your app experiences an issue. The method returns an issue ID, which you can use with the Inspector or when discussing an issue with the Vonage API support team.
This release fixes the following issues:
- Subscribers did not display video when the stream changed from audio-only to audio-video.
- Calling the Session.sendSignal() method when not connected to the session resulted in the app crashing.
- Calling the getData() method of the Connection object passed into the Session.SignalListener.onSignalReceived(session, type, data, connection) method did not return connection data.
- When network connections were re-routed through a proxy or when Session objects were garbage collected, fatal signal 11 (SIGSEGV) errors would occur.
- Reference table overflow errors caused apps to crash.

Version 2.5.0

Added proxy support.
Note that the samples directory is no longer included in the SDK bundle. The sample code is now available at the open-source vonage-video-android-sdk-samples repository on GitHub. This allows us to keep it up to date and provide developers with latest version of the sample code. Feel free to clone the repo or download the source code to see the best-practice examples of OpenTok usage.
Added hardware-accelerated VP8 decoding of videos on the Nexus 5 with Android Lollipop+.
Fixed a bug that could occur when you reuse a Session object to reconnect to a session.
Added a SessionIllegalState error in the OpentokError.ErrorCode enum. This defines an error code for an error that occurs if you try to connect to a session that is already connected or if you try to subscribe to a stream that is no longer in the session.

Version 2.4.1

Fixed an issue with failing DTLS negotiations with newer versions of Firefox, which can cause publishing and subscribing to fail in relayed OpenTok sessions (sessions that do not use the OpenTok Media Router ).

Version 2.4.0

This version adds support for testing on the Genymotion x86 emulator and the official Android x86 emulator images in combination with the Intel HAXM software for VM Acceleration.
This version adds support for screen sharing. When publishing a screen-sharing stream, call the setPublisherVideoType(type) method of the PublisherKit object and pass in PublisherKitVideoType.PublisherKitVideoTypeScreen. This optimizes the video encoding for screen sharing. It is recommended to use a low frame rate (5 frames per second or lower) with screen sharing. When using the screen video type in a session that uses the OpenTok Media Server, you should call the setAudioFallbackEnabled(boolean enabled) method of the Publisher object and pass in true to disable the audio-only fallback feature, so that the video does not drop out in subscribers. See the OpenTok Media Router and media modes.

When a stream is created in a session, you can determine the video type of the stream (screen or camera) by calling the getStreamVideoType() method of the Stream object. The type of stream is defined by constants in the StreamVideoType enum: StreamVideoTypeScreen, StreamVideoTypeCamera, and StreamVideoTypeCustom.

To publish a screen-sharing stream, you need to implement a custom video capturer for the OTPublisherKit object. For sample code that publishes a screen-sharing stream, see the "screensharing" sample (in the samples directory).
You can disable the audio-only fallback feature for a published stream by calling the setAudioFallbackEnabled(enabled) method of the PublisherKit object (passing in false). The audio-fallback feature is available in sessions that use the OpenTok Media Router. With the audio-fallback feature enabled (the default), when the OpenTok Media Router determines that a stream's quality has degraded significantly for a specific subscriber, it disables the video for that subscriber in order to preserve audio quality. The audio-fallback feature is enabled by default.
This version of the SDK takes advantage of hardware acceleration for video decoding on devices that support it. These devices include the Nexus 5 (with OS before 5.0 Lollipop), the Asus K010, the Asus K011, and the Asus K013.
Updated to use BoringSSL, Google's fork of OpenSSL.
Fixed an issue with video not recovering when network conditions improve (after video was disabled, due to network conditions, in a session using the OpenTok Media Server).

Version 2.3.0

The reason parameter has been added to the SubscriberKit.VideoListener.onVideoDisabled(SubscriberKit subscriber, String reason) and SubscriberKit.onVideoDisabled(SubscriberKit subscriber, String reason) methods. This parameter describes the reason why the subscriber video is being disabled. In the previous version, this method was only called when the video was disabled due to changes in the stream quality (in a session that uses the OpenTok Media Router). In version 2.3.0, the method is also called if the publisher stops sending a video stream or the subscriber stops subscribing to it (and the reason parameter value will be set accordingly).
New methods indicate when a subscriber's video stream starts (when there previously was no video) or resumes (after video was disabled): SubscriberKit.VideoListener.onVideoEnabled(SubscriberKit subscriber, String reason) and SubscriberKit.onVideoEnabled(SubscriberKit subscriber, String reason).
Use the new PublisherKit.AudioLevelListener and SubscriberKit.AudioLevelListener classes to monitor changes in the audio levels of publishers and subscribers. To use these, call the setAudioLevelListener(listener) method of a PublisherKit or SubscriberKit object.
The new SubscriberKit.VideoListener.onVideoDisabledWarning(subscriber) method is called when the OpenTok Media Router determines that the stream quality has degraded and the video will be disabled if the quality degrades more. The new SubscriberKit.VideoListener.onVideoDisabledWarningLifted(subscriber) method is called when the stream quality improves. This feature is only available in sessions that use the OpenTok Media Router (sessions with the media mode set to routed), not in sessions with the media mode set to relayed. The SubscriberKit class also has protected onVideoDisabledWarning() and onVideoDisabledWarningLifted() methods that you can implement (instead of the VideoListener methods) when you subclass SubscriberKit.
This version includes a new custom audio driver API. This lets you use custom audio streams and define the audio device used to capture and render audio data. The following new classes support the custom audio driver API:
- AudioDeviceManager -- Use this class to set the app to specify a custom audio device for use in the app.
- BaseAudioDevice -- Defines an audio device for use in a session.
- BaseAudioDevice.AudioBus -- The audio bus marshals audio data between the network and the audio device.
- BaseAudioDevice.AudioSettings -- Defines the format of the audio.
You can optimize the speaker usage for voice-only calls by calling AudioDeviceManager.getAudioDevice().setOutputMode(BaseAudioDevice.VOICE_COMMUNICATION). This sets the app to use the headset speaker (and the loudspeaker is disabled), which is preferable in voice-only apps.
This build improves the video quality under poor network conditions.
The Session.PublisherListener and the Session.onPublisherAdded(publisher) and Session.onPublisherRemoved(publisher) methods have been removed. You can monitor the PublisherKit.PublisherListener.onStreamCreated(stream) and PublisherKit.PublisherListener.onStreamDestroyed(stream) methods to determine when a publisher's stream is created and destroyed.

Version 2.2.1

Updated to use version 1.0.1h of OpenSSL.
The Session.unpublish() method now takes a PublisherKit parameter, instead of a Publisher parameter. (The Publisher class extends PublisherKit.)

Known issues

Applications may crash when the experimental 16KB page size is enabled. This issue is fixed from version 2.30.0 onwards.
Disconnecting from a session may take longer than expected. This issue is fixed from version 2.24.3 onwards.
In a session with the media mode set to relayed, only one client can subscribe to a stream published by an Android device.
Video streaming is prevented on networks that have firewalls that use authenticated proxies. This is due to a core issue with the current underlying WebRTC implementation (see this Chromium bug report) which is fixed now. We are working on determining whether this is still an issue for the Vonage Video API.
Audio is distorted in streams published from the Genymotion emulator.
When setting a proxy URL (with the OTSessionSettings.proxyURL property), please use the absolute URL root path only. Using the proxy path in the URL does not work currently and is a known bug. Hence, "https://my-proxy.herokuapp.com" and "https://my-proxy.herokuapp.com:443" are acceptable, while "https://my-proxy.herokuapp.com/" and "https://my-proxy.herokuapp.com/my-beta-app/version5" are not.
The frame rate of a published stream is decided by the camera driver, even if you specify a different frame rate for the published stream.
Google has issued a security notice regarding vulnerable versions of usrsctp, a library needed for WebRTC data channels. OpenTok does not support WebRTC data channels so users are not impacted. Additionally, usrsctp is not included in the SDK.

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Vonage Video API Android SDK release notes

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