OCHP Video · Live System Documentation

Broadcast video
configuration.

Single source of truth for the ATEM 4 M/E Constellation 4K — sources, outputs and where they land, hardware panel mappings, and camera control.

Switcher ATEM 4 M/E 4K sources outputs cameras
SDI source inputs
Configured outputs
Physical destinations
Cameras under control
00 · Startup

Power on sequence

FOHFront of house · at the desk AV MechAV Mech room rack
    01 · Inputs

    SDI sources

    Twenty SDI inputs feeding the ATEM. Cameras line the first sixteen, with HyperDeck, Resolume, Web Presenter, ProPresenter feeds, and the two ME multiviewers filling out the rest.

    Camera
    Playback
    Graphics
    Stream
    Multiview
    02 · Outputs · Routing

    Where each output lands

    ATEM outputs travel through transports (baluns, splitters, network switches, wall controllers) before reaching the physical destination. Click any node to focus its connections.

    ATEMSwitcher output
    BalunHDMI over Ethernet
    SplitterOREI 1×8 distribution
    Wall CtrlNovastar
    RoomPhysical destination
    Video signal flow
    ATEM outputs → transports → rooms. Line color matches the destination accent.

    Internal & reserved outputs

    Mask channels, ME / DSK feeds, and color generators that never leave the rack — useful for confidence checks but not physically patched.

    03 · Camera control

    Camera control & VISCA

    Per-input camera type assigned in ATEM's Camera Control panel. VISCA is left disabled today — the URSAs are controlled over SDI return; PTZ is not currently routed.

    04 · Hardware panel

    Button mapping

    M/E rows on the Advanced Panel. Each button maps to the source on the same number — keeping the layout 1-to-1 with input slots makes recovery from a hot-swap trivial. Open inputs are dimmed so the unwired buttons stand out.