VisionSC-SDI4 is a PCIe x8 capture card with four independent 3G-SDI inputs, each supporting 1920x1080 at 60 Hz. It provides up to 6 GB/s total capture bandwidth and 768 MB of frame buffer, with hardware timestamping for stitched surfaces. It includes unified Windows and Linux drivers and supports multi-channel audio, making it suitable for broadcast, live events, and multi-source SDI capture workflows.