The Roland VR-3EX SD/HD A/V Mixer with USB Streaming is a live production switcher and web streaming device featuring 3 x SD HDMI/composite inputs, and an HD HDMI/component or SD composite input. The unit processes the video internally using progressive processing at SD resolution. This means the VR-3EX does not introduce interlace artifacts, which results in a cleaner output than with regular SD switchers. Four built-in frame synchronizers, one per input, allow you to support and cleanly switch input video from sources that are not gen-locked. Plus, the fourth input features a built-in scaler that allows you to work with HD resolution video. It features a scaler on the output, allowing you to upscale to HD if you require, and the built-in USB port allows you to simultaneously record your program to a Mac or PC or upload to various streaming services. This unit is well-suited for clubs, concerts, Houses of Worship, events, weddings, education, and sporting events.