AVMatrix UC1218-4K 4K HDMI to USB-C Video Capture Device

AVMatrix UC1218-4K: Plug-and-Play 4K60 HDMI Capture With Loop-Out

The AVMatrix UC1218-4K is a 4K HDMI to USB-C video capture device that brings full 4K60 HDMI into a computer as a plug-and-play source, with a 4K loop-out for local monitoring. It is the capture dongle for creators who have moved to 4K and refuse to give up a monitor feed. For high-resolution streaming and recording, it delivers ultra-HD capture without a driver install or a power brick.

What UVC 4K Capture Means

The UC1218-4K is UVC and UAC compliant, so the operating system recognizes it natively as a webcam and audio device with no drivers, and it captures uncompressed HDMI video at up to 4K60 over USB 3.1. That standard-class design is why it works immediately with OBS, Zoom, Teams, Twitch, and vMix on Windows, macOS, and Linux. Capturing true 4K60 keeps fine detail and smooth motion intact for high-resolution production.

Loop-Out and Audio

A key advantage over simpler dongles is the 4K HDMI loop-out, which passes the incoming signal straight through to a local monitor or display while the device captures, so an operator can watch the source at full resolution without added latency. A mic/line audio input lets you add an external microphone or audio source, and an audio output provides monitoring, giving more complete audio handling than a basic capture stick.

Power-Free, and How It Compares

Like the rest of the UC line, the UC1218-4K is bus-powered over USB, so a single cable carries data and power with no external adapter, keeping laptop and field rigs simple. It is the 4K, loop-out-equipped step up from the 1080p UC1218, while the UC1118 handles SDI sources instead of HDMI.

Ideal Applications

The UC1218-4K fits 4K HDMI camera or console capture to a computer, 4K live streaming and recording, monitoring via loop-out while streaming, and high-resolution webinars and production. Streamers, gamers, and content creators working in 4K choose it for uncompressed capture with the convenience of plug-and-play and a full-resolution monitor feed.