The Roland V-4EX 4 Channel Video Switcher/Mixer is an all-in-one SD video mixer with HDMI in/out USB streaming out and built-in multi-viewer with touch control. The V-4EX is incredibly versatile making it suitable for many applications including clubs concerts houses of worship meetings training weddings education sporting events and more. The sleek and compact design makes it perfect for transportation and portable applications as well as permanent installations when size and space are considerations.