The ATEM SDI Pro ISO Switcher builds per-input ISO recording into a four-input 3G-SDI production switcher for multicamera live streaming of HD video to the internet via Ethernet. A USB output records the programme feed and each of the four individual 3G-SDI inputs to an external USB drive (not included), along with the embedded and analogue audio inputs, and generates a DaVinci Resolve project file so the recorded material drops straight into an edit. Each source runs through its own 2-channel digital audio mixer, and live tally, stream and record status are shown alongside a record button and channel-preview multiview. Upstream and downstream keyers, a DVE transition and chroma/luma keyers cover the production side, while a media player, computer input support, 3G-SDI output and Ethernet ATEM control round out its I/O.