Yuan SC400N2-L HDMI PCIe HDMI Video Capture Card with 2 x HDMI Inputs at 1080p60

A small streaming or lecture capture PC often has to take a camera and a presenter’s laptop at once, and a slim chassis only takes a low profile card. The SC400N2-L HDMI is Yuan’s 2-channel low profile PCIe HDMI video capture card for that job, with two HDMI inputs on a 104 x 68.9 mm card.

Both channels capture at up to 1920 x 1080p at 60/50 fps, and the card also accepts 1080i, 720p and PC resolutions from 640 x 480 to 1280 x 1024. 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. On-board processing covers cropping and scaling, automatic signal detection and deinterlacing. There is no hardware encoder, so any compression runs in software on the host.

The card runs PCIe x4 Gen2 and adds 16 GPIO lines and a watchdog. 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 HDMI puts two HDMI inputs on an M.2 2280 module for smaller hosts, and the SC400N4 HDMI captures four HDMI sources 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 104 x 68.9 mm and is listed by Yuan as low profile PCIe, so it suits slim desktop and rackmount chassis.