Beyond the switcher and the cameras sits a supporting cast that decides whether a show holds together: capture devices, audio interfaces, monitors, cabling, power, and the cooling accessories that keep it all running. Real gear categories, explained — no invented model numbers or benchmark figures.
This is a map of the categories that make up a live-production kit, not a ranked shopping list. Prices and models change constantly; the categories and the reasons behind them do not. For any specific product, check the current manufacturer specification — especially connector types, supported resolutions, and power requirements — before you buy.
Turn an HDMI (or SDI) camera signal into something a computer can use over USB or PCIe. Essential when you switch or stream in software rather than in hardware. Key specs to check: input type, maximum resolution and frame rate, and whether it offers passthrough.
Consumer cameras speak HDMI; professional and long-run infrastructure speaks SDI, which uses locking BNC cabling over much longer distances. Converters bridge the two worlds in either direction.
Sources at mismatched resolutions or frame rates need to be brought into line. ATEM switchers include a frame synchronizer on every input — a documented feature that re-times incoming signals so they combine cleanly.
Distribution amplifiers and splitters send one source to several destinations — program to a projector, a recorder, and a confidence monitor at once — without daisy-chaining and signal loss.
Audio gear is a whole discipline; here are the categories that intersect with a video rig. An audio interface converts microphone and line signals into digital audio for a computer, and back. A hardware mixer combines multiple audio sources with per-channel control before the signal ever reaches the switcher. Some all-in-one production consoles aimed at podcasters and streamers combine an interface, a mixer, and sound-effect pads in one box.
You cannot trust what you cannot see. A dedicated program monitor, plus a multiview screen showing every source, is how operators catch a bad shot before it airs. Portable HDMI monitors also serve as on-camera displays.
Cables are the most common point of failure in live work. Use appropriate-length HDMI (active or optical for long runs), locking connectors where available, and label both ends. Keep spares of every cable in the signal path.
A surge protector is the floor; an uninterruptible power supply (UPS) that rides through a brief outage is what keeps a live show alive through a flicker. Size the UPS to the load you actually need to protect.
Tripods, clamps, and mounting arms hold cameras, lights, and monitors steady. Unstable rigging shows up instantly as shaky, amateur footage.
The category most first-time builders forget until something throttles mid-show. Because the ATEM switchers are fanless and the production PC beside them works hard, quiet cooling belongs in the kit list from day one.
Quiet, large-diameter fans run slowly for near-silent airflow across a warm switcher or into a rack — the AV-appropriate way to add active cooling. See thermal management.
Stick-on aluminium or copper heatsinks add passive surface area to a warm device. Community-reported as an effective, silent boost for fanless gear.
A ventilated pad or riser lifts a device off the desk so its underside can breathe — simple, cheap, and effective for a fanless switcher.
Vented and fan panels keep a closed cabinet’s internal temperature down, protecting every device inside. Detail in thermal management.
Not for hardware switching — the ATEM Mini Pro and Extreme stream directly, and a base ATEM Mini outputs to a computer over USB as a webcam source. Capture cards are essential when you bring individual camera signals into a computer to switch or stream in software instead.
HDMI is the consumer connector most cameras use, reliable over short distances. SDI uses locking BNC cabling and carries video over much longer runs, which is why professional and fixed-install productions favour it. Converters bridge the two in either direction.
An uninterruptible power supply rides through a brief outage or voltage flicker that would otherwise crash your switcher and computer mid-show. Even a short interruption ends a live stream; a UPS sized to your critical load keeps it running.
A frame synchronizer re-times an incoming video signal so it lines up with the rest of your sources and combines cleanly. Per Blackmagic’s documentation, ATEM switchers include a frame synchronizer on every input, which is why they accept sources at mismatched timings.
Because ATEM switchers are fanless and the production PC works hard, plan for quiet cooling from the start: low-noise large-diameter fans, stick-on heatsinks, a ventilated cooling pad or riser, and rack ventilation for closed cabinets. See our thermal-management guide for the principles behind each.