Dual-HDMI + Dual 3G-SDI Thunderbolt 3 External Capture Box
A four-channel mixed-interface capture solution for multi-camera streaming, broadcast production, conference recording, medical imaging, and industrial vision. It combines two HDMI inputs with two HD-SDI / 3G-SDI inputs, supporting up to 1080p60 video per channel, HDMI/SDI embedded audio, and independent Line In audio capture. Dual Thunderbolt 3 ports provide a 40 Gb/s link with daisy-chain expansion and DP display expansion. YUY2 4:2:2, XRGB, NV12, hardware scaling, and deinterlacing support professional software and custom integration.
A balanced four-channel platform for HDMI and SDI sources
Four-channel mixed HDMI / SDI Thunderbolt 3 capture platform
2 × HDMI IN · 2 × 3G-SDI IN · Line In
The compact metal enclosure places two HDMI connectors, two locking BNC connectors, and Line In on a single panel for efficient mixed-signal cabling. Thunderbolt 3 connectivity avoids consuming an internal PCIe slot and suits fixed workstations or mobile production systems.
Mixed-source connectivity, flexible audio, and high-speed expansion
One capture box combines HDMI cameras or computers with professional SDI equipment and carries them to the host over Thunderbolt 3. Locking BNC connectivity supports long-distance or fixed cabling, while Line In accepts an external mixer, microphone preamplifier, or other line-level source.
From four mixed sources to the capture application
Technical specifications
| Product Type | Four-Channel Mixed HDMI / 3G-SDI Thunderbolt 3 External Capture Box |
| Host Interface | 2 × Thunderbolt 3, up to 40 Gb/s, daisy-chain support |
| Video Inputs | 2 × HDMI inputs; 2 × BNC / SDI inputs |
| Video Standards | HDMI 1.4; HD-SDI and 3G-SDI |
| Input Resolution | Up to 1080p60 per channel and supported lower resolutions |
| Capture Resolution | Up to 1080p60 per channel and supported lower resolutions |
| Video Output Formats | YUY2 4:2:2, XRGB, NV12 |
| Video API | DirectShow |
| Embedded Audio | 2 channels of HDMI embedded audio; 2 channels of SDI embedded audio |
| External Audio Input | 1 × line-level Line In |
| Audio Format | 48 kHz, 16-bit |
| Audio API | DirectSound |
| Expansion Output | 1 × DP expansion output |
| Video Processing | Automatic input detection, output scaling, and hardware deinterlacing |
| HDCP | HDCP handshake support on HDMI; protected content requires appropriate authorization |
| Windows | Windows 7 / 10; Windows Server 2008 R2 |
| Linux / macOS | Linux kernel 2.6.38 and later; verify macOS compatibility against the released driver |
| Compatible Software | OBS Studio and capture, streaming, or recording software using DirectShow |
| Development Support | HWS SDK and standard DirectShow development interface |
| Power / Dimensions | External power; connector placement, enclosure size, and adapter depend on the released configuration |