Datavideo CAP-2A HDMI to USB-C 4K Capture Box

The Datavideo CAP-2A is a compact HDMI to USB-C capture box that records and streams up to 4K 30p and 1080p at 120fps, delivering broadcast-quality video capture for live production, content creation, and remote collaboration. Powered by a USB-C 3.2 interface with data transfer rates up to 5Gbps, the CAP-2A connects instantly to Windows, macOS, and Linux systems — no drivers required.

For professionals searching for the best 4K HDMI capture box for OBS streaming or a compact HDMI capture device for live video production, the CAP-2A delivers an exceptionally clean workflow. Its HDMI loop-through output passes 4K 60p signals to a connected monitor at full resolution, while the USB-C output simultaneously sends captured video to your production software — eliminating any compromise between what you see on screen and what you record.

Audio flexibility sets the CAP-2A apart in its class. A dedicated 3.5mm stereo line input allows external audio sources to mix directly with HDMI-embedded audio, enabling seamless integration of microphones, mixers, or other line-level devices into the capture chain. Fully UVC-compliant and compatible with industry-standard platforms including OBS, Zoom, Google Meet, XSplit Broadcaster, VLC, and TeamViewer, the CAP-2A integrates into virtually any professional live production or content creation environment without additional software overhead.

Key Features of the Datavideo CAP-2A USB-C Capture Device

• 4K and High-Frame-Rate Capture: Handles up to 4K 30p output to your computer and passes 4K 60p through the HDMI loop output, while also supporting 1080p at 120fps — ideal for high-motion content and broadcast applications.
• USB-C 3.2 Interface at 5Gbps: Delivers fast, stable data transfer that sustains high-resolution capture without dropped frames or bandwidth bottlenecks during demanding live productions.
• HDMI Loop-Through Output: Passes the full 4K 60p HDMI signal to a local monitor simultaneously, so operators maintain a clean reference feed while the capture stream runs independently.
• Stereo Line-In Audio Mixing: Integrates a 3.5mm external audio input alongside HDMI-embedded audio, giving producers direct control over the final mix without an external audio interface.
• Plug-and-Play Across Operating Systems: UVC-compliant design enables instant recognition on Windows 10 x64 and above, macOS High Sierra 10.13 and above, and Linux — no driver installation needed.
• Broad Software Compatibility: Works natively with OBS, Zoom, Google Meet, XSplit Broadcaster, AMcap, Potplayer, TeamViewer, and VLC across supported platforms.
• Bus-Powered and Ultra-Compact: Draws under 4.5W directly from the USB port with no external power supply required, making it an ideal portable capture solution for field production and remote workflows.

Technical Specifications

• Model: CAP-2A
• Video Input: 1x HDMI
• Video Output: 1x USB 3.2 Type-C; 1x HDMI Loop-Through
• Input Video Bandwidth: Up to TMDS 18G
• Output Video Bandwidth: USB-C: Up to 5Gbps; HDMI: Up to TMDS 18G
• Supported Input Video Formats: 3840×2160p 60/59.94/50 (HDMI loop-through only); 3840×2160p 30/29.97/25; 2560×1440p 60/59.94/50/30/29.97/25; 1920×1080p 120; 1920×1080p 60/59.94/50/30/29.97/25; 1280×720p 60/59.94/50
• Supported Output Video Formats (USB-C): 3840×2160p 30/29.97/25; 2560×1440p 60/59.94/50/30/29.97/25; 1920×1080p 120; 1920×1080p 60/59.94/50/30/29.97/25; 1280×720p 60/59.94/50/30/29.97/25
• Audio Input: HDMI Embedded Audio (2-channel); 3.5mm Stereo Line Input
• Audio Format — Input: 16/24-bit, 2-channel; 44.1kHz and 48kHz sample rate
• Audio Format — Output: Up to 24-bit PCM, fixed 48kHz (UVC)
• Capture Video Formats (USB 3.2 Gen 1): RGB / YUY2 / NV12 / I420 / P010 / MJPEG
• Capture Video Formats (USB 2.0): MJPEG / YUY2 / NV12 / I420
• Firmware Update: Via USB Port
• Power Supply: Bus-powered via USB
• Power Consumption: Under 4.5W
• Supported OS: Windows 10 x64 or above; macOS High Sierra 10.13 or above; Linux
• Operating Temperature: 32°F – 104°F (0°C – 40°C)
• Storage Temperature: -4°F – 140°F (-20°C – 60°C)
• Humidity: 20–90% RH (non-condensing)
• Dimensions (L x W x H): 4.13" x 2.68" x 0.91"
• Weight: 0.17 lbs (75g)

What's in the Box

• 1x Datavideo CAP-2A HDMI to USB-C Capture Box
• 1x USB 3.0 Cable