1RU real time HDR/SDR converter with Colorfront software / 4K/UltraHD/HD/SD frame sync and converter. 1-Channel 4K/Ultra HD, or 4 independent channel HD/SD frame syncs.

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SKU: AJA-FS-HDR Categories: , Tag:


FS-HDR delivers Real-time High Dynamic Range & Wide Colour Gamut Conversion using powerful Colorfront Engine Video Processing

FS-HDR, a 1RU, rack-mount, universal converter/frame synchroniser, is designed specifically to meet the HDR (High Dynamic Range) and WCG (Wide Colour Gamut) needs of broadcast, OTT, post and live event AV environments, where real time, low-latency processing and colour fidelity is required for 4K/UltraHD and 2K/HD workflows. Developed in partnership with Colorfront, the FS-HDR’s HDR/WCG functionality is powered by Colorfront Engine proprietary video processing algorithms.

FS-HDR also serves as a full, 1-Channel up, down, cross-converter for 4K/UltraHD/2K/HD HDR transformation, conversion and frame sync needs and in 4-Channel mode, offers 4 independent channels of 2K/HD conversion including HDR transformations.


This release of FS-HDR firmware v.3.2 provides several great new features and further fixes including:

  • Added RGB Colour Corrector for general use and to colour correct a source signal prior to HDR LUT processing.
  • A Maintain A/V Sync feature couples video and audio delay controls to maintain audio-sync when adjusting Video Timing.
  • Audio Delay now displayed in milliseconds and audio samples.
  • Processor channel names can now be edited for easier identification.
  • BBC v1.3.1 HLG LUTs

For more information, head over to the AJA support page and check out the release notes.

Real Time HDR Converter

FS-HDR Real Time HDR Converter Comparison Chart

The pursuit of High Dynamic Range (HDR) is the dream of getting closer to the Human Visual System (HVS) in all that we experience as viewers. FS-HDR has been designed to get us all there faster with a low profile, stand alone and real time device uniquely designed to bridge SDR to HDR, HDR to SDR and HDR to HDR,
all in real time.

HDR Conversions:

  • HDR to HDR
  • HDR to SDR
  • SDR to HDR

WCG Conversions:

  • BT.709 and BT.2020

Up and Down Conversions:

  • Converting HD SDR BT.709 sources to UHD HDR BT.2020
  • Converting UHD HDR BT.2020 sources to HD SDR BT.709

Colorfront Engine

Maintaining Perceptual Integrity

FS-HDR’s HDR/WCG capabilities leverage video and color space processing algorithms within Colorfront Engine, specially-licensed by AJA from Colorfront, and developed by Colorfront’s CTO Bill Feighter and Lead Engineer Tamas Perlaki, both of whom are Academy Award-winners.

Powered by Colorfront Engine, FS-HDR’s extensive HDR and WCG processing support enables real time processing of a single channel of 4K/UltraHD/2K/HD including down-conversion to HD HDR or up to four channels of 2K/HD simultaneously. FS-HDR also enables the conversion of popular camera formats from multiple vendors into the HDR space, plus conversion to-and-from BT.2020/BT.709 as needed, critical for the widespread acceptance of HDR alongside SDR in broadcast and OTT workflows.

Real-time Camera LOG Conversions

FS-HDR can take incoming imagery from some of the most popular professional cameras in the world today and convert their LOG output in real-time to 4K/UltraHD or 2K/HD and output as either HDR or SDR. This greatly simplifies workflows in a mixed camera environment and provides for a unified input workflow to HDR or SDR capable switchers and more. Additionally, FS-HDR provides the ability to convert to Sony S-Gamut/S-Log3 on output from any of these sources for workflows requiring this Log feed to compatible switchers and more.

  • Sony S-Gamut3/S-Log3
  • ARRI LogC Wide Gamut
  • Panasonic Vlog
  • Red Log3G10 Wide Gamut
  • Canon Log2
  • Canon Log 3

Inputs: Dynamic Range/Colour Gamut

  • SDR BT.709 100 Nits
  • PQ BT.2020 1000 Nits
  • PQ P3D65 1000 Nits
  • Hybrid Log Gamma BT.2100
  • Sony S-Gamut3/S-Log3
  • ARRI Log C Wide Gamut
  • Panasonic V-Log
  • RED Log3G10 Wide Gamut
  • Canon Log 2
  • Canon Log 3

Outputs: Dynamic Range/Colour Gamut

  • SDR BT.709 100 Nits
  • PQ BT.2020 1000 Nits
  • Hybrid Log Gamma BT.2100
  • Sony S-Gamut3/S-Log3

HDR Workflows for UltraHD and HD with FS-HDR

FS-HDR opens a range of exciting possibilities for the integration of HDR within a range of workflows

  • Converting from a house HDR standard to a delivery HDR standard.
  • Converting from a camera OETF to a house HDR standard.
  • Converting from HDR standard to SDR for delivery or monitoring.
  • Converting SDR camera output to a house HDR standard.
  • Converting SDR sources to HDR for integrating into an HDR program
  • Converting HD SDR BT.709 sources to UHD HDR BT.2020
  • Converting UHD HDR BT.2020 sources to HD SDR BT.709
  • Converting source inputs to Sony S-Gamut3/S-Log3

FS-HDR Key Features

  • HDR to HDR, SDR to HDR and HDR to SDR conversions for Dynamic Range and Wide Color Gamut needs.
  • Support for two modes:
    • Single-channel mode for 4K/UltraHD or 2K/HD frame sync and conversion including HDR conversions
      • 4K/UltraHD/2K/HD/SD video processing and up, down, cross-conversion
      • A full range of I/O options for 4K/UltraHD including Quad 1.5G; Dual 3G; and Quad 3G, 6G and 12G over a range of SDI and optional fibre choices
      • SMPTE 2SI I/O support for broad compatibility with 4K/UltraHD devices
    • Four-channel mode for simultaneous independent 2K/HD/SD channels including HDR conversions
      • 2K/HD/SD up, down, cross-conversion
      • SD/SD aspect ratio conversion
      • HD/HD cross-conversion (720p/1080i)
  • Widely inter-operable with 4K/UltraHD/2K/HD raster support, Quadrants and 2SI conversion, P, PsF and Interlace support
  • A 1RU frame offering space, power and cost efficiencies ideal for broadcast trucks, post production or broadcast settings
  • Audio I/O processing with a 272×208 matrix of audio possibilities; support for a flexible range of audio feeds from discrete AES to MADI and embedded SDI audio, with each audio input offering sample-rate conversion
  • Simple operation, a redesigned menu structure and quick access to features via front panel buttons, as well as a web-based UI offering control over a LAN or across the web
 AJA FS-HDR Single Channel Mode  AJA FS-HDR Four Channel Mode

Single-Channel Mode

Bulletproof Reliability. Incredible 4K/HD Conversion Power.

View Workflow

4K/UltraHD delivery, processing and synchronisation is fast becoming the next standard, and FS-HDR gets you there with a wealth of digital video connectivity including Quad 1.5G, Dual 3G, Quad 3G over 3G-SDI and 12Gb/6Gb over optional 12G-SDI BNC and 12G-SDI LC Fibre SFP modules.

In single channel mode, FS-HDR will up scale your HD or SD materials to 4K/UltraHD and back, with a huge array of audio channels over Fibre,
3G-SDI, AES, and MADI for an incredible 272 x 208 matrix of audio possibilities.

In Single-Channel HDR processing can be performed on true 4K or UltraHD signals and up, down, cross-conversion is available for HD HDR
or HDR SDR needs from an UltraHD source.

Four-Channel Mode

Welcome to Multi-Channel HD HDR Processing.

View Workflow

In four channel mode FS-HDR provides incredibly powerful multi-channel conversion with up to 4 channels of simultaneous HDR processing for 2K/HD and SD signals. Powerful conversion processing also allows Region of Interest (ROI) scaling, color correction, proc amp controls, motion adaptive deinterlacing and much more.

In 4-Channel mode you can also bring in a single HD source and process four separate outputs from it, each with their own HDR/SDR transformations.

Multi-channel density in a 1RU Chassis. Space, energy and power
possibilities preserved. 

HDMI Output and Hi5-4K-Plus: 4K/UltraHD 3G-SDI to HDMI 2.0 Conversion

FS-HDR includes a HDMI output for HD monitoring of your HDR conversions. For beautiful full HDMI 2.0 to UltraHD displays, pair your FS-HDR with Hi5-4K-Plus.

AJA’s Hi5-4K-Plus preserves your vision with pristine image fidelity and HFR support up to 60p for 4K/UltraHD SDI to HDMI 2.0 conversion needs. The Hi5-4K-Plus can also generate HDR metadata in accordance with HDMI v2.0a/CTA-861-G. Hi5-4K-Plus provides a simple monitoring connection from professional 4K devices like the FS-HDR, using Quad 3G-SDI, Quad 1.5G-SDI, or Dual 3G-SDI outputs to new displays with HDMI 2.0 inputs, for cost-effective monitoring for 4:2:2/4:4:4 60p professional workflows.

Up, Down, Cross-Conversion

Moving to 4K is never an instant change. Legacy signals and archival material need to be integrated into the 4K environment while 4K sources need to be down-converted for current 2K/HD pipelines.

Utilising AJA’s remarkable conversion algorithms, FS-HDR supports up, down, cross-conversion from SD, HD or 2K over 12G/6G/3G-SDI video to 4K or UltraHD video and back. Both Quadrant (Square Division) and 2SI (Two Sample Interleave) output formats are supported.

AJA’s powerful hardware conversion technology ensures the highest image quality for your productions. Key conversion features include:

  • 4K/UltraHD/2K/HD/SD up, down-conversion
  • SD/SD aspect ratio conversion
  • HD/HD cross-conversion (720p/1080i)

All done in beautiful 10-bit with dedicated hardware.

Remote Configuration and Control

FS-HDR is network ready and supports SNMP monitoring and web-based remote control. Units can be connected to any Ethernet network via the built-in 10/100/1000MB Ethernet port, allowing control and configuration of multiple FS units from any web browser on a connected computer. Configurations can be saved and applied to multiple units, ensuring consistency and quick configuration in large installs.

FS-HDR features unique over the network control of HDR settings from within its elegant interface available from any browser, anywhere.

Incredible Digital Connectivity

Video and Audio deserve the connectivity and bandwidth required to meet the demands of your projects.

FS-HDR utilises standard BNC as well as optional SFP inputs and outputs to integrate easily into a variety of workflows and facilities with support for SDI workflows all the way up to 12G.

FS-HDR has Coax and Fibre* inputs and outputs to accept 4K/UltraHD/2K/HD/SD resolution SDI signals in Single Channel Mode. In Four Channel mode 2K/HD/SD inputs can be be routed to multiple locations simultaneously without the need for any external signal distribution.

A looping Reference Input allows the FS-HDR to be locked to your house reference signal for rock solid stability.

Digital Audio can be dis-embedded and embedded between SDI, MADI and AES for an incredible array of routing possibilities.

* SFP inputs and outputs are optional.

12G/6G HD-BNC and Fibre SFP Options

FS-HDR’s SFP options include both 12G/6G-SDI HD-BNC and Fibre I/O options, allowing great SDI flexibility and fibre cable runs of up to 10 kilometres to be connected directly to the FS-HDR without the need for separate fibre to SDI conversion.

Optional 12G/6G-SDI SFPs:

  • HDBNC-2TX-12G: 12G/6G-SDI Dual Coax HD-BNC Transmitter
  • HDBNC-2RX-12G: 12G/6G-SDI Dual Coax HD-BNC Receiver
  • FIBERLC-2TX-12G: 12G/6G-SDI Dual Fibre LC Transmitter Single Mode
  • FIBERLC-2RX-12G: 12G/6G-SDI Dual Fibre LC Receiver Single Mode

Single and Dual Channel Fibre connectors supported:

  • Single Channel LC connector modules
  • Single Channel SC connector modules
  • Dual Channel LC connector modules

Massive Audio Flexibility

The growth of 5.1 and 7.1 audio has increased the number of audio channels that must be managed in a production, The MADI standard provides a convenient way to transport huge numbers of audio channels along a single cable, simplifying the cabling demands for broadcasters, mobile trucks and production. FS-HDR supports both fibre and coax MADI input and output. An internal 277 x 208 mono audio matrix allows you to route 1 to 1 or 1 to many with full routing of MADI, mix-downs and all audio coming from SDI, fibre and AES sources for an incredible amount of audio processing capability in a single box.

Closed Caption Conversion

FS-HDR supports closed captioning and the conversion of closed captioning between 2K/HD/SD and 4K/UltraHD formats – including full conversion of CEA-608 and CEA-708 standards. FS-HDR can preserve closed captioning even when converting between formats, removing the need to reinsert closed captions after conversion.

Active Format Description

Automatically sets Active Format Description information to match the converted signal. This means AFD information does not have to be inserted after conversion and provides accurate information for devices that understand AFD.

Video Processing

  • Motion adaptive de-interlacer
  • Proc amp controls
  • Colour corrector
  • Legaliser
  • Frame rate conversion/film cadence removal/insertion (3:2, 1:2, 2:1, 2:3)
  • Adjustable delay 0-6 frames with H and V timing controls in lines and pixels
  • Closed Captioning conversion (CEA-608/CEA-708)
  • AFD input detection, down-convert control, and output pass through or overwrite
  • Freeze (manual or on input signal loss) to black or last good frame
  • Matte generator for background fill
  • Video test generator
  • Nominal video delay HD/SD, 2 frames (LFR), 4 frames (HFR)

Learn More from AJA

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