DeckLink Quad includes 4 SDI inputs and 4 SDI outputs that can be switched between SD and HD video formats, as well as a common black burst/tri-sync input. DeckLink Quad includes a built in watchdog timer under API control with bypass relays for a robust broadcast solution that automatically switches to bypass if power is lost, or software crashes. Each SDI input and output is independent, so each SDI input or output can be a different video standard.