Description
Magewell USB Capture SDI 4K Plus
The Magewell USB Capture SDI 4K Plus is a premium, single-channel SDI-to-USB capture device engineered for demanding broadcast, medical, industrial, and professional AV applications. Supporting up to 4K UHD 60fps over 12G-SDI, this compact device offers exceptional image quality, ultra-low latency, and rock-solid reliability. It is the ideal choice for workflows that require high-resolution SDI capture directly into a computer via USB.
Equipped with a powerful onboard processing engine, the USB Capture SDI 4K Plus automatically handles scaling, frame rate conversion, color space conversion, de-interlacing, and image adjustments — dramatically reducing CPU usage on the host system. While it accepts 4K60 SDI input, it outputs up to 1080p60 over USB 3.0 to ensure universal UVC compatibility.
The device features a full-size 12G-SDI input and loop-through output, embedded audio support, and a durable metal finish designed for long-term professional use. With universal plug-and-play compatibility on Windows, macOS, Linux, and Chrome OS, it integrates seamlessly with OBS Studio, vMix, Zoom, Teams, Wirecast, and any UVC/UAC-based platform.
Main Features
- 12G-SDI input supporting up to 4K60 (4096×2160)
- SDI loop-through for monitoring or downstream routing
- USB 3.0 plug-and-play operation with UVC/UAC compatibility
- Outputs up to 1080p60 over USB
- Built-in hardware processing for scaling, color conversion & de-interlacing
- Supports embedded SDI audio (up to 8 channels)
- Durable metal housing for professional reliability
Technical Specifications
SDI Input & Loop-Through
- 1× 12G-SDI input (BNC)
- 1× 12G-SDI loop-through output (BNC)
- Max input resolution: 4096×2160 at 60fps
- Supports 3G, 6G and 12G-SDI formats
- Embedded audio support (16 channels, 48kHz)
USB Output
- USB 3.0 Type-A interface (USB 2.0 compatible)
- Max output resolution: 1920×1080 at 60fps
- Video formats: YUY2, NV12, RGB24, RGB32
- Audio output: PCM 48 kHz, 16-bit
Onboard Video Processing
- Up/downscaling
- Frame rate conversion
- Color space conversion
- De-interlacing
- Cropping and aspect ratio adjustment
- Brightness, contrast, saturation & hue control
System Compatibility
- Windows 7/8/10/11
- macOS
- Linux (V4L2/ALSA)
- Chrome OS
Supported Software
- OBS Studio
- vMix
- Wirecast
- Zoom, Skype, Microsoft Teams
- VLC, QuickTime, Adobe, Final Cut Pro
- Any UVC/UAC-compatible application
Physical Specifications
- Dimensions: 92.2 × 40.2 × 12.3 mm
- Weight: approx. 80 g
- Metal enclosure
- Power consumption: approx. 2.5 W
Applications
- Professional 4K broadcast and production systems
- Live streaming with SDI cinema or ENG cameras
- Medical and scientific imaging workflows
- Industrial SDI monitoring and capture
- Lecture capture and educational environments
What’s in the Box
- Magewell USB Capture SDI 4K Plus
- USB 3.0 cable
- Quick start guide
























