Yuan SC400N2-L SDI PCIe SDI Frame Grabber with 2 x SDI Inputs at 1080p60

In a control room or outside broadcast rack, two SDI cameras usually need to reach their own monitors as well as the recording PC, and the PC is often a slim chassis. The SC400N2-L SDI is Yuan’s 2-channel low profile PCIe SDI frame grabber for that setup, with two SDI inputs and two loop-through outputs.

Both channels capture at up to 1920 x 1080p at 60/50 fps, and the card also accepts 1080p30, 1080i, 720p and SD-SDI. Each SDI output loops its feed through, so monitors stay in the chain. Audio arrives as two stereo embedded channels. Capture and preview formats are RGB24 and RGB32 at 4:4:4, YUY2 at 4:2:2, and YV12 and NV12 at 4:2:0, all 8-bit, so host software can take frames in the format it already uses.

The card runs PCIe x4 Gen2 and adds 16 GPIO lines and a watchdog. On-board processing covers cropping and scaling, automatic signal detection and deinterlacing, and the card captures VANC data alongside video and audio. There is no hardware encoder, so any compression runs in software on the host. Yuan supplies a Windows and Linux SDK for custom applications, and the card works with DirectShow and V4L2 software; Yuan’s compatibility list names vMix, OBS, Zoom, Skype, Teams, Discord, Slack, Cisco Webex and GoToMeeting. The SC400N2 M2 SDI puts the same two inputs and loop-throughs on an M.2 module, and the SC400N4 SDI captures four SDI feeds on a full height card.

Yuan lists driver support for Windows 7, 8, 8.1 and 10, Linux 4.8 or higher in 32-bit and 64-bit builds, Linux ARM, and NVIDIA Jetson TX2, Nano, AGX Xavier and Xavier NX modules. Yuan lists multi-instance and multi-device support for systems that run more than one capture session or card. The card measures 99.76 x 68.9 mm and is listed by Yuan as low profile PCIe, so it suits slim desktop and rackmount chassis.