12G-SDI and HDMI Up, Down, Cross-Converter with Frame Sync

The UDC-4K boasts a robust, advanced aluminum enclosure featuring broadcast-quality components ideal for both standalone “throw-down” use and high-density rackmount installations. Up to three units can be mounted side-by-side on a single 1RU shelf—perfect for space constrained environments. Achieve power supply redundancy using the AJA DRM2-Plus rackmount solution. 

The front-to-back airflow and proper cooling design ensure high reliability, making it ideal for demanding applications while keeping noise to an absolute minimum.  

The onboard color LCD display provides real time status information, and push button controls enable configuration without the need for a computer.

UDC-4K is an up/down/cross-converter, as well as a video scaler and frame rate converter used in production to convert video signals between different resolutions, formats, and frame rates, to ensure compatibility between all the equipment in your production. Built using advanced 12-bit conversion technology, the UDC-4K delivers unparalleled image quality for the most demanding workflows. With its broadcast quality conversions, it seamlessly bridges the gap between 4K, UHD, 2K, and HD video resolutions across SDI and HDMI inputs and outputs.

UDC-4K's frame synchronizer synchronizes wild or untimed video signals to a common timing reference, such as in a multicam sporting event, ensuring perfect timing alignment for seamless integration into your production. It’s an essential component in any broadcast, mobile, live event, proAV, or postproduction environment.

The UDC-4K offers a broadcast quality frame synchronizer that supports the synchronization of untimed 12G-SDI or HDMI video signals up to 4K resolution, allowing users to synchronize and convert a wide range of video formats to their house timing standard. It even offers utility frame rate conversion between 59.94 and 50/60 frame rates using a simple frame add/drop/repeat algorithm. All video processing is performed with 12-bit quality.

Audio sample rate converters are provided for embedded HDMI and SDI audio, which can also be disabled for non-PCM audio pass-through without alteration.

HDMI to SDI and SDI to HDMI converters simplify complex setups, from incorporating HDMI signals into SDI productions to monitoring of SDI signals on HDMI displays. The UDC-4K converts 12G-SDI to HDMI 2.0, delivering exceptional image quality, making it ideal for 4K/UHD workflows up to 60p. Similarly, the UDC-4K converts HDMI 2.0 to 12G-SDI with HDMI Extended Display Identification Data (EDID) emulation, ensuring that the connected source continuously provides preferred video formats on its output.

UDC-4K has an integrated Distribution Amplifier (DA) that takes a single video input signal, amplifies it or reclocks it, and distributes it to multiple outputs without compromising quality or signal strength. The UDC-4K is a 1x4 12G-SDI reclocking distribution amplifier ideal for productions requiring a robust and reliable DA in limited space, such as DIT carts, video villages, production trucks, staging, fly kits, and more. It can distribute a converted input to 4x SDI outputs and 1x HDMI output, or it can loop through the SDI input to 2x SDI outputs and send the processed signal to 2x SDI outputs and the HDMI output, for example. The UDC-4K also features an HDMI input and loop output, allowing it to distribute the processed signal to 4x SDI outputs. With so many possibilities, the UDC-4K is a capable problem solver.

The UDC-4K is your go-to tool for solving many production challenges. In this workflow, the UDC-4K is sent an untimed UHD camera feed that needs to be synchronized with the house timing. Provide the UDC-4K with a reference signal, and it can simultaneously provide frame synchronization and down conversion of untimed SDI signals. This ensures perfectly timed signals can be seamlessly integrated into any production environment. The HDMI output can be used for local confidence monitoring of the processed output.

The UDC-4K provides four SDI outputs. All four outputs can deliver the processed signal, or two can be configured as SDI loop-through outputs, eliminating the need for upstream DAs to distribute the unprocessed SDI signal and downstream DAs to distribute the processed SDI signal.

Download Workflow

Convert 1080p SDI signals into stunning UHD HDMI for digital signage, in-venue displays, on-set displays, and more. The UDC-4K ensures clean scaling, vivid color fidelity, and instant connectivity, making it ideal for a wide range of productions, broadcast, live events, and proAV monitoring.

The UDC-4K provides four SDI outputs. All four outputs can deliver the processed signal, or two can be configured as SDI loop-through outputs, eliminating the need for upstream DAs to distribute the unprocessed SDI signal and downstream DAs to distribute the processed SDI signal.

Download Workflow

In this workflow, the UDC-4K is up-converting HD-HDMI sources to high resolution UHD 12G-SDI, and outputs are locked to a supplied reference for use in a broadcast, production, or any venue where a high quality, rock solid, synced HDMI to SDI converted signal is needed. You can utilize the HDMI loop out for local confidence monitoring.

The UDC-4K provides four SDI outputs. All four outputs can deliver the processed signal, or two can be configured as SDI loop through outputs, eliminating the need for upstream DAs to distribute the unprocessed SDI signal and downstream DAs to distribute the processed SDI signal.

Download Workflow

In addition to the front panel button controls and menu screen, you can choose to use AJA’s free Mini-Config software to configure and control all functions of the UDC-4K via the device’s USB-C connection. Available on Windows and macOS, Mini-Config's easy to use graphical interface provides configuration plus detailed information about the current input and output formats and status. A high-level block diagram shows the internal signal paths from the inputs to the outputs. Users can also load firmware updates from AJA as new features and functionalities are introduced.

AJA’s technical support is recognized as among the best in the industry and is available to all AJA customers. If you need assistance with any aspect of your Mini-Converter installation, configuration, operation or encounter any technical issue,  AJA Support will work with you to get up and running.

Mini-Converter products are covered by a generous five year warranty. Please see the individual Product’s Manual for additional specifics around warranty conditions for the product itself.