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4x2 Seamless HDMI Matrix Switcher with Multiview and USB 3.2 Capture

VLML-4x2U30AC

18Gbps 4x2 seamless HDMI matrix switcher with built-in multiview and 4K USB capture, routing four sources to two HDMI outputs and a USB stream at up to 4K60 4:4:4.
Multiview layouts, including single, PIP, picture-by-picture, triple, quad, and custom arrangements, with seamless switching.
A USB 3.2 Gen 1 port captures video and audio at up to 4K over standard UVC/UAC, so a connected computer sees the unit as a plug-and-play capture device for conferencing or streaming, with no drivers to install.
HDR10, HDR10+, HLG, and Dolby Vision pass-through with HDR-to-SDR conversion, four looping HDMI inputs, and de-embedded optical and analog audio, control by front panel, IR, RS-232, or TCP/IP web GUI.

Product Description

The VLML-4x2U30AC is an 18Gbps 4x2 seamless HDMI matrix switcher with integrated multiview and 4K USB capture, routing four HDMI sources to two outputs at resolutions up to 4K60 4:4:4. It is HDCP 2.2 and 1.x compliant, supporting both current and older sources.

In multiview mode, several sources appear on a single screen through Auto, Single, PIP, picture-by-picture, Triple, Quad, and custom layouts. Multiview and single-screen content are available on Output 1, while Output 2 provides a dedicated single-screen feed. Seamless switching in matrix mode moves between sources with no black screen or tearing, with auto or manual switching modes.

A dedicated USB 3.2 Gen 1 port captures video and audio at up to 4K using the standard UVC and UAC protocols, letting a connected computer treat the switcher as a plug-and-play capture device for video conferencing, recording, or live streaming, without additional drivers. The switcher also passes HDR10, HDR10+, HLG, and Dolby Vision through untouched and converts HDR to SDR when a display requires it.

Each of the four HDMI inputs includes a loop-out for cascading connections. De-embedded audio is available on an optical S/PDIF output and a balanced analog line output. Control is flexible across front panel buttons, IR remote, RS-232 or TCP/IP API, and the built-in web GUI, with input EDID management on board.

Key Features

HDMI 2.0b video up to 4K60 4:4:4, HDCP 2.2 and 1.x compliant
4K video capture over USB 3.2 Gen 1 (up to 5Gbps) using standard UVC/UAC, no drivers required
Multiview layouts: Auto, Single, PIP, picture-by-picture, Triple, Quad, and customized arrangements
Seamless single-screen switching with no black screen or tearing, plus fast switching in multiview
HDR10, HDR10+, HLG, and Dolby Vision pass-through, with HDR-to-SDR conversion
Four HDMI inputs, each with loop-out for cascading connections
Two HDMI outputs: Output 1 for single or multiview, Output 2 for single screen
De-embedded audio on optical S/PDIF and balanced analog line outputs
Auto or manual switching modes, advanced input EDID management
Control via front panel, IR remote, RS-232, TCP/IP, or web GUI

Multi-View Mode

The VLML-4x2U30AC displays several sources on a single screen through Auto, Single, PIP, picture-by-picture, Triple, Quad, and custom layouts. Multiview output is carried on Output 1, while Output 2 delivers a dedicated single-screen feed. Multiview uses fast switching for quick source changes, and matrix mode adds seamless single-screen switching with no black screen or tearing between sources.

USB 3.2 Capture

The VLML-4x2U30AC captures its output over a USB 3.2 Gen 1 connection at up to 4K, using the standard UVC video and UAC audio protocols. A connected computer recognizes the switcher as a plug-and-play capture device, so it works directly with conferencing, recording, and streaming applications without installing drivers. This turns a multi-source room into a single capture feed, carrying either a switched single source or a multiview layout into the software of choice.

Downloads

DATA SHEET (PDF)

USER MANUAL (PDF)

Ideal Applications

Video conference rooms capturing a switched or multiview feed into meeting software as a plug-and-play device
Lecture capture and recording combining multiple sources into one USB stream
Live streaming and production feeding a multiview or single source to streaming software over USB
Boardrooms and dual-display setups using multiview on Output 1, a single-screen feed on Output 2, plus a USB capture stream
Huddle and collaboration spaces presenting several inputs in PIP or quad layouts
Mixed-display environments where HDR sources must reach both HDR and SDR screens

Specifications

  
  Technical
HDMI ComplianceHDMI 2.0b
HDCP ComplianceHDCP 2.2 and 1.x
Video Bandwidth18Gbps
USB BandwidthUSB 3.2 Gen 1 up to 5Gbps
Input Video ResolutionUp to 4K@60Hz, including 3840×2160p and 4096×2160p at up to 60Hz, plus PC and SD/HD formats from 640×480p60 and 480i through 1080p60
Output Video ResolutionHDR Bypass Mode: passthrough from input. HDR to SDR Mode: scaled output up to 3840×2160p60 and 4096×2160p60, and down to 1024×768p60
Color Depth8 / 10 / 12-bit
Color SpaceRGB, YCbCr 4:4:4, YCbCr 4:2:2, YCbCr 4:2:0
HDRHDR, HDR10, HDR10+, Dolby Vision, HLG
IR Level12Vp-p
IR FrequencyWideband 20K–60KHz
Transmission DistanceHDMI passive cable: 9.8ft / 3m
Audio FormatsHDMI Passthrough: LPCM, Dolby Digital/Plus/EX, Dolby TrueHD, Dolby Atmos, DTS, DTS-HD, DTS-HD Master Audio, DTS-96/24, DTS High Res. 

Audio Breakout: Optical Out up to LPCM/Dolby/DTS 5.1CH; Line Out LPCM 2CH (sample rate 32–192kHz)
ESD ProtectionIEC 61000-4-2: ±8kV (air-gap discharge), ±4kV (contact discharge)
Line Analog Audio Out
Output Impedance600 Ohm balanced; 300 Ohm unbalanced
Output Level (Maximum)8.2dBu (2Vrms) @ balanced; 2.2dBu (1Vrms) @ unbalanced
Frequency Response20Hz to 20kHz (±0.5dB)
Dynamic Range>90dB @ 0dBu, 1kHz A-weighted
Audio S/N Ratio>90dB @ 0dBu, 1kHz A-weighted
Audio THD+N<0.01% @ +4dBu, 1kHz
Audio Output Delay<1ms
Connection
Input Ports4 × IN [HDMI Type A, 19-pin female]
Output Ports1 × OUT 1 [HDMI Type A, 19-pin female, single/multiview output]; 
1 × OUT 2 [HDMI Type A, 19-pin female, single screen output]; 
4 × LOOP [HDMI Type A, 19-pin female]; 
1 × LINE AUDIO OUT [5-pin 3.5mm phoenix connector]; 
1 × OPTICAL AUDIO OUT [S/PDIF]; 
1 × UVC/4K [9-pin USB Host Type B, USB 3.2 Gen 1 5Gbps, supporting UVC/UAC]
Control Ports1 × RS-232 [3-pin 3.5mm phoenix connector, RS-232 API control]; 
1 × LAN [RJ45, TCP/IP and web GUI]; 
1 × SERVICE [USB-C, USB 2.0 only, firmware upgrade]; 
1 × IR EXT [3.5mm audio jack, IR IN 12V level]
Mechanical
HousingFront panel: Aluminum; Rear case: Metal Enclosure
ColorBlack
Dimensions440mm [W] × 200mm [D] × 44mm [H]
Weight2.65kg
Power SupplyAC 100–240V 50/60Hz
Power Consumption61.6W (Max)
Operating Temperature0°C–40°C / 32°F–104°F
Storage Temperature-20°C–60°C / -4°F–140°F
Operating Humidity20–80% RH (non-condensing)
Storage Humidity10–90% RH (non-condensing)

What’s in the Box

1 × VLML-4x2U30AC 4x2 Seamless Matrix Switcher
1 × IR Remote Control
1 × IR Wideband Receiver Cable (1.5m)
1 × 3-pin 3.5mm Phoenix Connector (male)
1 × 5-pin 3.5mm Phoenix Connector (male)
1 × USB 3.0 Host Cable (USB-A to USB-B, 0.5m)
2 × Mounting Ear
8 × Machine Screw
1 × Multinational AC Power Cord (1.5m, optional)
1 × User Manual

Frequently Asked Questions

What is the VLML-4x2U30AC?
The VLML-4x2U30AC is an 18Gbps 4x2 seamless HDMI matrix switcher with built-in multiview and 4K USB capture, routing four sources to two HDMI outputs and a USB stream at up to 4K60 4:4:4.

How does the USB capture work?
A USB 3.2 Gen 1 port outputs video and audio at up to 4K using the standard UVC and UAC protocols, so a connected computer recognizes the unit as a plug-and-play capture device with no drivers required.

Can I capture a multiview layout, not just a single source?
Yes. The USB feed can carry either a switched single source or a multiview layout, so the captured stream reflects what is shown on Output 1.

What multiview layouts does it support?
It supports Auto, Single, PIP, picture-by-picture, Triple, Quad, and customized layouts, with multiview carried on Output 1 and a single-screen feed on Output 2.

Does it support HDR?
Yes. It passes through HDR10, HDR10+, HLG, and Dolby Vision, and can convert HDR to SDR for displays that do not accept HDR.

Does it switch without dropouts?
Yes. Matrix-mode switching is seamless with no black screen or tearing, and multiview uses fast switching for quick source changes.

What audio outputs does it provide?
De-embedded audio is available on an optical S/PDIF output (up to 5.1CH) and a balanced analog line output (LPCM 2CH).

What is the difference between the VLML-4x2U30AC and the VLML-4x2U30A?
The VLML-4x2U30AC adds a USB 3.2 Gen 1 capture output for 4K UVC/UAC video and audio capture. The VLML-4x2U30A shares the same matrix, multiview, and HDR features without the capture port.

How is the VLML-4x2U30AC controlled?
It can be controlled from the front panel, IR remote, RS-232 or TCP/IP API, and the built-in web GUI.