ATEM is a professional broadcast SDI switcher that also includes loads of HDMI connections, so you can start affordably with consumer HDMI cameras then move up to SDI cameras as your budget grows! Unlike other switchers, every video input features an automatic frame re-synchronizer, so you can plug in any device and it always works! Imagine getting started with incredible multi-camera production using the latest low cost and high quality HD consumer cameras! ATEM is perfect at locations where you need to adapt to the environment because it includes SDI, HDMI, and component/composite inputs and outputs. You can send live program output to anyone who needs it because ATEM includes 6 program outputs in HD-SDI, HDMI, HD component and USB 3.0, as well as permanently down converted SD-SDI and composite video. All ATEM models include built in black, bars, media player and color generator sources. The ATEM multi-viewer includes both SDI and HDMI outputs, plus you get 3 Aux outputs for connecting to stage screens and venue monitoring. The ATEM 1 M/E model includes a total of 8 inputs with 4 HDMI, 1 component/composite, and 4 SDI/HD-SDI connections. If you need even more inputs, the ATEM 2 M/E model features extra SDI connections for a total of 16 inputs, as well as 6 Aux outputs, and support for 2 independent multi-viewers!