Magewell Pro Capture Dual SDI

Magewell Pro Capture Dual SDI: Two Independent Broadcast-Grade SDI Channels

The Magewell Pro Capture Dual SDI provides two independent SDI capture channels on a single low-profile x4 PCIe card. At £400, it is the natural choice for broadcast workflows that require simultaneous ingest from two SDI sources without the complexity, slot consumption, or added cost of installing two separate capture cards in the same machine.

Two Channels, Two FPGAs, True Independence

Each channel has its own dedicated FPGA processor. This is not a single processing unit shared between two inputs. Both channels operate independently: different SDI formats, different frame rates, different embedded audio configurations, all running simultaneously without one affecting the other. A 3G-SDI 1080p60 source on channel one and an HD-SDI 1080i50 source on channel two run in full parallel with no compromise on either. Format detection is automatic per channel, covering SD-SDI, HD-SDI, and 3G-SDI on both inputs.

Broadcast Workflows That Require Two SDI Channels

The most common reason to choose a dual-channel card over two separate single cards is slot economy in dense rackmount servers. But there are also workflow-level reasons that make two channels on a single card the right design choice for specific productions:

• Two-camera interview or studio setups where both ISO feeds need to be recorded simultaneously into a single workstation running vMix or Wirecast
• Programme output plus return feed ingest from a vision mixer, capturing both the clean programme signal and a talkback-embedded return on the same machine
• Replay system workflows where capture and output monitoring need separate, independent signal paths without adding another machine
• Broadcast news gathering with dual-camera SDI feeds going into a laptop or compact workstation for simultaneous editing and streaming
• Live event production where a camera feed and a VT or replay server output both need to be available as separate sources in the same production session
• ISO recording of two programme angles for delivery to a post-production facility requiring separate unmixed feeds

Software and OS Compatibility

Both channels appear as separate capture devices in production software. vMix recognises each channel as an independent input, assignable to different camera layers, mix buses, or recording outputs within the same session. Wirecast, OBS Studio, Adobe Premiere Pro, and FFmpeg all handle dual-device access in the same way. Each channel is a separate device in your OS, which means your software sees two SDI capture devices rather than one dual-channel device, keeping integration straightforward.

The card runs on Windows 10, 11, and Windows Server (driver required), Linux 3.x and later via V4L2 without an additional driver, and macOS 10.14 and later via the MWCapture SDK. The 24/7 duty cycle rating makes it appropriate for permanent broadcast infrastructure and ingest systems rather than occasional production use.

Planning Ahead: Single versus Dual

The Pro Capture SDI at £215 is the right choice if you genuinely only need one SDI channel now and that is unlikely to change. The Dual SDI at £400 costs the same per channel but requires a wider x4 PCIe slot. If there is any realistic possibility your workflow will need a second SDI input in the coming year, the Dual SDI is the more practical purchase now. Adding a second card later means consuming an additional PCIe slot, an additional bracket, and an additional set of cables. If your chassis has limited slots, that second slot may not be available when you need it. For four simultaneous SDI channels, the Pro Capture Quad SDI provides that on the same card size.

Buying from StreamKit

StreamKit supplies the Pro Capture Dual SDI as an authorised Magewell reseller in the UK, with the full three-year manufacturer warranty, free tracked UK delivery, and UK technical support. Our team can assist with dual-channel configuration in vMix and Wirecast, driver installation, and integration planning for broadcast ingest systems. Contact us before ordering if you have specific workflow or compatibility questions.