Blackmagic
Multiview

Blackmagic MultiViews are the world’s first native Ultra HD multi viewers that let you monitor completely independent SDI video sources on a single HD or Ultra HD display! With full frame re‑synchronization on every input, you can monitor any combination of SD, HD and Ultra HD formats and frame rates all at the same time, on the same display. When used with an Ultra HD television, the quad split view gives you four full resolution 1080 HD monitors on a single screen! You also get on screen audio meters, custom view labels and much more!