# 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 [#v4x-1]

    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 [#v44151-1]

    Released on September 30, 2025.

    #### Compatibility changes [#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 [#new-features-2]

    ##### Video frame screenshots [#video-frame-screenshots-1]

    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 [#single-stream-recording-without-transcoding-1]

    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.
      </CalloutDescription>
    </CalloutContainer>

    ### v4.4.150 [#v44150-1]

    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>