Today’s most popular 4K video standards are inherently point-to-point in nature, yet systems are required to split video pipelines whenever capture and monitoring is required simultaneously. Duplicating frames in software adds latency and uses system resource, whilst external signal splitters are often too cumbersome and unreliable for many professional applications. The Datapath VisionIO-SDI4 provides four 3G SDI zero latency loop through ports, each with alpha-blended overlay capability. When connected in series between the video source and the local monitor, the VisionIOSDI4 is capable of capturing video at full quality whilst mixing in overlay data into the live monitoring path without adding latency. The VisionIO-SDI4 offers a unique solution for the operator who needs both live video and overlay data to be displayed on a single monitor, whilst recording the stream in the background. Whether in a Medical Operating Room overlaying patient data onto surgical camera inputs, or whether adding overlays in Augmented Reality (AR) based applications, the VisionIO-SDI4 offers a uniquely unparalleled and professional solution to the market.