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
    e0d38d526e2fc510796607df5ed513ed1f673528d310d651d03abff12310d0ce0b8e7e48d6ea423a047ce45830c34aaca9a6dd513ad4fcc6670b8efdb0994c4e

    Windows (ARM64)

    Download
    SHA-512 checksum
    018709378335f0f9499bdae885e498c831cc907b29e4b918a4121068c5064404616dc974c0c102bfa092ae948dd9034847ed7f3980484d0cdf3a74d50279066a

    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
    11b80b4d8cd228126141fce4b35f2918b042e210f2665cd7f846122a859df3d2101115f8badc3faa446308ed4feda594d0b0c9d8633a035d5a17df3a9298351e

    macOS (Apple Silicon / ARM64)

    Download
    SHA-512 checksum
    e2dd4b99537fc71e23393c3b0774123104dfdaafbebe25cbb220654848e5d9b6151e0090e47b4cd2a02deb6df4c0651f5b8a2edf096407effeacf949cb3852af

    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
    9e3f434c64f8fd39afc824c577c9ab47ff39ec45c7426229ccd76265a3ab692e7895d62406d5489da4f387a88c454e59fc8d7466010c62ee1159fe35ad2648f5

    Linux (ARM64)

    Download
    SHA-512 checksum
    7486abd411c2a077583bdb1f1dff035b12215ea8f0827f1d79ec9660afaca374c4ebbd3e99a141e0f76082a51f177fb458faa642613be7fbd06a83eb7cf0d720

    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