Relay App

    Download the Relay App

    The operator-side desktop app you run on your technician's machine to open remote-control sessions to your devices.

    Why FFmpeg?

    The Relay App decodes the target device's H.264 screen stream locally using the FFmpeg runtime libraries (avcodec, avutil, swscale). These libraries are required and are not bundled in the download — install them for your operating system using the instructions below.

    Windows

    Windows (x64)

    Download
    SHA-512 checksum
    b7abd0f5a3f4837b991b880a34c4232ade372107938483a9c0a15a5da3172883728474e014e5ede22ba2e343192ff6f9e0f1ef282b8e8959b0a2395b7bd9f9ae

    Windows (ARM64)

    Download
    SHA-512 checksum
    2c702f6e4570db20941ae388e9a3f8cf16822a8af2c98e1623b58d2aee79d9cd15a61f5c20a58ce46e2050b5546a83d28d645799abb23812df5838fa328c73ce

    Prerequisites

    Install an FFmpeg shared build (the codec libraries ship as DLLs, not statically linked):

    winget install Gyan.FFmpeg.Shared

    That is all — the app loads the version-suffixed DLLs (avcodec-*.dll, avutil-*.dll, swscale-*.dll) directly, so no renaming is needed. Make sure the shared build's bin\ folder is on your PATH, or copy the DLLs next to NetLock_RMM_Relay_App.exe.

    Windows on ARM64 has no readily available FFmpeg shared build. Without it, the relay falls back to slower JPEG polling instead of hardware-accelerated H.264 decoding.

    macOS

    macOS (Intel / x64)

    Download
    SHA-512 checksum
    d8a0354463ccfdf32d7410fb53338a43fb9f400e20bb174ea99de182a144206efc11235bd7041ba5e5f37a7d40314287a08cd041501dcdb0fb545f071f1b461c

    macOS (Apple Silicon / ARM64)

    Download
    SHA-512 checksum
    5ca0d2c3df8d9e291cc9ca4537216a130f0efc50334171a2f0934b60632d629dec7ca2c0c73e53d80adeaaafea0e21dc69b343aa887c6602a760b56b2154eef3

    Prerequisites

    Install Homebrew if it is not already present, then install FFmpeg:

    brew install ffmpeg

    This works on both Intel and Apple Silicon Macs — the app probes Homebrew's library directories (/opt/homebrew/lib and /usr/local/lib) automatically, so no symlinking is needed.

    Linux

    Linux (x64)

    Download
    SHA-512 checksum
    75f101a3e296ec0caf947222eb0db39fb85bc7c57f59e750df9ad3c1bd1fb7e7440ffa4657d21a3fc8ba2bbbd81c60e57de64c626cdc6ac992c70c2c20111ef3

    Linux (ARM64)

    Download
    SHA-512 checksum
    27535031a90e9d7e5848af37c61d90caceaaa700a60723605915f4530318a2d06aa6e280b203e6b3625447e72e97227759545dbdc0bd8b4abb45e9e70efd893d

    Prerequisites

    Install FFmpeg. On Debian and Ubuntu:

    sudo apt install ffmpeg

    Verify your download

    After downloading, compute the SHA-512 hash of the zip and compare it to the checksum shown for your platform above. Replace <rid> with your platform's runtime identifier (for example win-x64).

    Linux
    sha512sum relay.package.<rid>.zip
    macOS
    shasum -a 512 relay.package.<rid>.zip
    Windows
    CertUtil -hashfile relay.package.<rid>.zip SHA512
    Compare the printed hash to the SHA-512 checksum shown above for your platform. If they do not match, do not run the app — re-download the file.

    Set up remote control

    Follow the full guide to install the Relay App, complete the FFmpeg setup, and open your first relay-mediated remote-control session.

    Read the remote-control guide