# Release notes (/en/realtime-media/on-premise-recording/reference/release-notes/linux-java)

> For AI agents: see the complete documentation index at [llms.txt](/llms.txt).

The On-Premise Recording SDK provides recording functionality for the Agora Realtime Communication SDK. For more information see [Product overview](/en/realtime-media/on-premise-recording/product-overview).

## v4.x

With the 4.x release, the On Premise Recording SDK version 3.x and earlier have entered the retirement phase. For detailed retirement schedule and migration plan, refer to [Service Sunset Plans](/en/realtime-media/on-premise-recording/reference/sunset).

### v4.4.151

Released on September 30, 2025.

#### Compatibility changes

This release removes the `AgoraMediaComponentFactory` interface class and moves the original `createMediaRtcRecorder` method into the `AgoraService` class. If you upgrade from v4.4.150 to v4.4.151, update your integration logic accordingly.

#### New Features

##### Video frame screenshots

This release adds the video frame screenshot feature. After initialization, call `enableRecorderVideoFrameCapture` to enable and configure video frame screenshots. You can then get the captured video data in callbacks of `IRecorderVideoFrameObserver`.

For implementation details, see [Local screenshots](/en/realtime-media/on-premise-recording/build/customize-the-recording/local-screenshot).

##### Single-stream recording without transcoding

This release adds an overloaded `initialize` method to `AgoraMediaRtcRecorder`. Use the `recordEncodedOnly` parameter to enable single-stream recording without transcoding. After you enable this parameter, the server writes remote H.264 or H.265 video data directly to MP4 files.

This parameter is mainly for high-concurrency recording scenarios. Use it with `VideoSubscriptionOptions.encodedFrameOnly` set to `true` to maximize concurrency.

<CalloutContainer type="warning">
  <CalloutDescription>
    When single-stream recording without transcoding is enabled, watermarking and composite recording are unavailable.
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</CalloutContainer>

### v4.4.150

Released on June 30, 2025.

This is the first release of the On-Premise Recording 4.x SDK. It includes the following features:

* Record real-time audio and video.
* Record audio and video content from all participants in a single channel.
* Record audio and video content from all participants in multiple channels simultaneously.
* Record audio-only content from all participants in one or more channels simultaneously.
* Support recording of encrypted channels using the built-in encryption of the Agora SDK.

<CalloutContainer type="info">
  <CalloutDescription>
    With this release, On-Premise Recording SDK v3.x and earlier enters the retirement phase. For the detailed retirement schedule and migration plan, refer to [Service Sunset Plans](/en/realtime-media/on-premise-recording/reference/sunset).
  </CalloutDescription>
</CalloutContainer>