The Marshall VAC-12HUC captures an HDMI source through USB-C for compatible computer applications. An active HDMI loop keeps the source available to a local display, and host USB power avoids a separate supply. Capture resolution depends on the USB connection speed and the incoming video format.
Marshall VAC-12HUC Features
- HDMI source capture. The HDMI 2.0 input accepts supported formats up to 4096 × 2160 at 30 fps. It provides a bridge from a camera or other HDMI source into a computer capture workflow.
- UHD capture over USB 3.0. USB 3.0 capture supports up to 3840 × 2160 at 30 fps. This permits UHD capture from an appropriate source when the host connection and application support the required mode.
- Defined USB 2.0 fallback. USB 2.0 operation is limited to up to 1280 × 720 at 30 fps. A USB-C connector by itself does not establish USB 3.0 speed, so the host port and cable affect capture capability.
- HDMI loop for local viewing. The active loop-through connection allows the source to feed an HDMI display alongside computer capture. This retains a direct local viewing path at the capture position.
- External line-audio substitution. A 3.5 mm line input can replace existing embedded HDMI audio. The source must already contain an audio track; this input cannot add a new track to an HDMI signal with none.
- UVC operation and host power. The converter operates as a UVC camera device and draws power from USB. This reduces the supporting hardware needed at a computer-based streaming or recording position.
Specifications
| Manufacturer | Marshall Electronics |
|---|---|
| Model | VAC-12HUC |
| Input | HDMI 2.0, up to 4096 × 2160 at 30 fps |
| USB output | USB-C using USB 3.0/2.0 |
| USB 3.0 resolution | Up to 3840 × 2160 at 30 fps |
| USB 2.0 limit | Up to 1280 × 720 at 30 fps |
| Video loop | Active HDMI loop-through |
| Audio | 3.5 mm line input replacing existing embedded audio |
| Control | UVC camera-device operation |
| Power | Powered from the host USB connection |
Technical Questions
What input does it accept?
HDMI 2.0, up to 4096 × 2160 at 30 fps.
What USB connection does it use?
USB-C using USB 3.0/2.0.
What is the maximum USB 3.0 resolution?
Up to 3840 × 2160 at 30 fps.
What is the USB 2.0 resolution limit?
Up to 1280 × 720 at 30 fps.
What video loop-through is available?
Active HDMI loop-through.
What is specified for audio?
3.5 mm line input replacing existing embedded audio.
How can it be controlled?
UVC camera-device operation.
How is it powered?
Powered from the host USB connection.
Buying and Installation Questions
What is the VAC-12HUC used for?
It is intended for HDMI capture for streaming, conferencing and recording on a computer.
What should I check before ordering?
The analog input replaces an existing audio track; it cannot create a track when the HDMI source has none.
Which configuration does this SKU identify?
Marshall VAC-12HUC HDMI-to-USB-C Capture Converter. Match this exact model identifier when selecting accessories or replacement equipment.
Where can I check installation details?
Use the manufacturer documentation linked in the Manuals tab for wiring, setup and interface-specific limits.
