
In Stock


Two independent 12G-SDI 4K60 channels with loop-throughs on a single PCIe x8 card.
Ask us a quick question about this product — signal compatibility, use case fit, or anything technical. We usually reply the same day.
The Pro Capture Dual SDI 4K Plus is the SDI counterpart to the Dual HDMI 4K Plus LT — two fully independent 12G-SDI capture channels at up to 4Kp60 with active loop-throughs, on a single PCIe x8 card. For broadcast 4K ingest density per slot, it is unmatched.
Most commonly specified into OB trucks, 4K broadcast galleries, and high-end live-production workstations where two 4K SDI cameras need to be ingested simultaneously without taking up two card slots. Each loop-through is active, so both downstream SDI chains continue uninterrupted while capture runs.
Each channel supports the full SDI range — 12G, 6G, 3G, HD and SD — so mixed-vintage camera estates work without configuration.
| SKU | 112700000 |
| Brand | Magewell |
| Category | Pro Capture |
| Form Factor | Full-height PCIe x8 — 210mm × 111mm |
| Host Interface | PCIe Gen2 x8 |
| Video Input | 2× BNC (SD/HD/3G/6G/12G-SDI) |
| Loop-through | None |
| Max Input Resolution | 4096×2160 4K 60fps per channel (12G-SDI) |
| Signal Features | Cable equalizer per port — SD/HD/3G/6G/12G-SDI — HDR10/HLG — RGB/YCbCr 4:4:4/4:2:2 — 10/12-bit — Up to 8-ch audio per input at 48kHz |
| Video Capture Formats | 4:2:0 8-bit: NV12, I420, YV12 — 4:2:2 8-bit: YUY2, YUYV, UYVY — 4:4:4 8-bit: V308, IYU2, V408, BGR24, BGR32 — 4:4:4 10-bit: V410, Y410 — Up to 144fps (resolution & bandwidth dependent) |
| Video Processing | Full 10-bit pipeline (~720 Mpixels/s ×2) — Scaling, Cropping, De-interlace — Aspect ratio conversion — Colour space (RGB, YCbCr 601/709/2020) — Frame rate conversion — OSD per channel |
| Audio | Up to 8-ch embedded SDI audio per input at 48kHz |
| Multi-Stream | Unlimited simultaneous capture streams per channel — independent crop/colour/resolution/frame rate per stream |
| Latency | Ultra low — 64 video lines |
| DMA Bandwidth | ~400 MB/s (PCIe 2.0) — ~200 MB/s (PCIe 1.0) — Intel tiled GPU, AMD DirectGMA, Nvidia GPUDirect |
| Sync & Timestamp | Hardware 100ns clock — A/V synchronisation — Multi-card sync via SDK |
| Recommended OS | Windows 10/11/Server 2016/2019/2022/2025 (x86 & x64) — Linux x86/x64/ARM kernel 2.6.35+ — macOS 10.9+ / 10.12+ |
| Supported APIs | Windows: DirectShow, DirectKS, WASAPI/Wave/DirectSound — Linux: V4L2, ALSA — macOS: AVCaptureSession, AudioUnit — Magewell Capture SDK |
| Compatible Software | VLC, VirtualDub, OBS, XSplit, vMix, Wirecast, Adobe Flash Media Encoder, Microsoft Media Encoder, any DirectShow/V4L2/AVCaptureSession software |
| Multi-Card / SDK | Magewell Capture SDK — rotary switch 0–F for multi-card systems — safe firmware upgrade without shutdown |
| LED Indicator | Pulsing slowly: no signal — On: signal locked — Double blink: memory/FPGA error — Off: firmware/power fault |
| Power | Max 25W |
| Working Environment | Operating: 0°C to 60°C — Storage: −20°C to 70°C — Humidity: 5–90% non-condensing |
| UK Stock | In Stock |
| Warranty | 2–3 Years (Magewell manufacturer warranty) |
Full specifications: magewell.com/tech-specs/pro-capture-dual-sdi-4k-plus ↗
Everything included in the box with the Pro Capture Dual SDI 4K Plus. Part numbers and accessory images from official Magewell documentation.



If anything is missing from your delivery, contact us within 7 days and we will arrange a replacement.
Official Magewell documentation for the Pro Capture Dual SDI 4K Plus. Datasheet is mirrored on our server for direct download; drivers, firmware and software live on Magewell's download centre and open in a new tab.
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The Pro Capture Dual SDI 4K Plus uses a PCIe x8 slot. It will also fit in larger PCIe slots (x8, x16) as PCIe is backward compatible, but will run at the card's native lane width.
The Pro Capture Dual SDI 4K Plus is a capture card. Simultaneous playback (loop-through) depends on the specific model — check the Loop-Through spec in the full specification table. ForeFront Imaging can advise if you need simultaneous I/O.
The Pro Capture Dual SDI 4K Plus works with any software that supports DirectShow (Windows), V4L2 (Linux), or AVCaptureSession (macOS), including OBS Studio, vMix, Wirecast, Capture One, XSplit and most broadcast NLE software. Magewell's free Capture Express software is also available.
The Pro Capture Dual SDI 4K Plus accepts 2x 12G-SDI with loop-through.
The Pro Capture Dual SDI 4K Plus captures at up to 3840x2160 @ 60fps per channel.
Yes. Magewell Pro Capture cards are fully supported on Windows 10 and Windows 11. Driver downloads are available free from Magewell's website and from our Software page.