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Ki Pro® Rack

The VTR alternative.

The power of Ki Pro in a 1RU format, the perfect fit for broadcasters transitioning away from tape.


Transition to file-based workflows

For video facilities transitioning from tape to file-based workflows for recording and playback, Ki Pro Rack offers high-quality, 'ready-to-edit' file capture, designed to get material from source to editorial as quickly as possible.

With a wealth of professional connections, Ki Pro Rack will fit right into your existing cabling and routing system and record 10-bit Apple ProRes and Avid DNxHD files direct to removable hard disk or SSD Storage Modules, eliminating the need for time-consuming logging and capturing. The files can be used in most editing systems without the need for additional transcoding or importing processes.

Unify formats - speed workflows

AJA's high-quality up/down/cross-conversion makes it easy to unify SD, 720p, and 1080i and create a single desired format for your project. The multitude of video and audio connections such as SDI, HDMI and analog make integrating Ki Pro Rack with other production equipment easy.

10-bit, full raster recording

Big on quality - but not on file size. Recording 10-bit, full raster files, Ki Pro Rack gives you high quality images that easily stand up to post processing requirements - and client scrutiny.

Compared to 8-bit recording devices, 10-bit 4:2:2 recording (when supported by the codec) provides better quantization, giving a superior representation of the original scene and allowing for more flexibility in post production when adjusting color and balance.

By utilizing efficient ProRes and DNxHD codecs, file sizes are kept in check so you won't need to blow your production budget on extra storage.

RS-422 Control

RS-422 control allows Ki Pro Rack to integrate easily with supported editing systems and external controllers allowing it to fulfill several of the functions of a traditional VTR. Supported NLEs can even perform assemble edits directly to the Ki Pro Rack.

Ki Pro Rack’s RS-422 control can also be used to link a traditional VTR with Ki Pro Rack for direct editing control. Use the editing controls on properly equipped VTRs to control Ki Pro Rack for machine-to-machine transfer of video and audio. This allows tape footage to be captured directly as files on Ki Pro Rack without the need for a separate edit controller.

Familiar controls and operation

Anyone familiar with the operation of a tape deck will feel immediately comfortable when working with Ki Pro Rack.

Just like a traditional tape deck, Ki Pro Rack features straightforward and dedicated transport buttons - record, play, stop, rewind, fast forward - making the device easy to operate with minimal training time. The current status of the system and key configuration information is clearly displayed on the built-in screen. Additional operational information can be found in the STATUS menu which can be accessed even when recording or playing back.

The Ki Pro Rack operating system offers users a flat menu structure that is easy to navigate with menu parameters presented in clear and understandable language.


Ki Pro Rack goes beyond traditional tape decks with sophisticated play out and automation capabilities. Because Ki Pro Rack is file-based, any clip can be instantly queued up and played either from the front panel or via the built-in Ethernet connection - with no seek time. Complete developer tools are available, allowing advanced users to script and automate Ki Pro Rack and other Ethernet-equipped AJA products for custom applications.

Closed Caption Support

If you need to record or playout video with Closed Captioning embedded,
Ki Pro Rack is fully compatible with your needs.

Ki Pro Rack recognizes CEA-708 within incoming SDI Inputs and encodes
the Closed Captioning to your Apple ProRes recorded file. Upon playback, you can utilize the Closed Captioning within a recorded file over Ki Pro Rack's 4 x 3G-SDI outputs.

Professional connections

The video and audio connections on the rear panel of the Ki Pro Rack offer the same standard connectors found on traditional tape decks, allowing Ki Pro Rack to integrate easily with your current cabling and routing. The rear connections include SDI, HDMI, component analog, AES and analog XLR balanced audio, LTC, RS-422 and LAN.

Reliable storage media

Ki Pro Rack captures directly to reliable AJA KiStor media. KiStor media are available as HDDs or SSDs in a variety of capacities to best suit the demands of your production environment. KiStor modules also feature built-in USB 3.0 connectivity for direct connection to your editing system using standard interfaces. KiStor media may also be used with the optional KiStor Dock which features a Thunderbolt™ connection for lightning-fast data transfers.

Utilizing the rollover recording capability with the dual media drive bays, recording can start on one media module and seamlessly continue onto the second module once the first has reached capacity. This makes Ki Pro Rack ideal for long-form recording needs while maintaining incredibly image high quality.

Ethernet file transfer

Utilizing the LAN network functionality, media can be copied to and from the Ki Pro Rack over the Ethernet connection. This allows for fast file transfers without the need to physically remove the media from the Ki Pro Rack, which can be especially useful in larger facilities and cuts down dramatically on the number of people that have to enter the machine room, minimizing the risk of unintentional interference with equipment.

Remote configuration and operation

In a truck or a machine room, Ki Pro Rack is equipped for advanced remote control and configuration. With a standard Ethernet LAN connection to a host computer and any web browser, all Ki Pro Rack parameter settings, clip selection and transport controls can be controlled; no additional or special software installation is required on the host computer. Multiple Ki Pro Rack units can even be controlled from a single web interface making Ki Pro Rack an ideal solution for multi-camera recordings.

AJA DataCalc

Calculate your storage needs before digitizing even begins and keep your team on track.
Gatekeeper certified for OS X.

Note: the AJA Data Rate Calculator is provided as part of the system installation for all KONA cards, Io Express, and the Io HD.

    Download for Mac      

Download for Windows

Download from iTunes 


Tech Specs

Video Input

• 1080i 25, 29.97, 30
• 1080PsF 23.98, 24, 25*, 29.97* 
• 1080p 23.98, 24, 25, 29.97
• 720p 23.98*, 25*, 29.97*, 50, 59.94, 60 
• 625i 25
• 525i 29.97

*(Note: 25 and 29.97 require a valid camera source and the use of the Record Type>PsF selection

Codec Support

• Apple ProRes 422
• Apple ProRes 422 (HQ)
• Apple ProRes 422 (LT)
• Apple ProRes 422 (Proxy)
• Avid DNxHD 220x
• Avid DNxHD 145
• Avid DNxHD 36, only provides support for the 1080p format

Removable Storage

• AJA Ki Stor modules - 2 slots with rollover recording

Video Input Digital

• SD/HD SDI, SMPTE-259/292/296, 10-bit
• Single Link 4:2:2 (2 x BNC, input selection in software)
• HDMI v1.3

Video Input Analog

• SD/HD Component (3 x BNC)
• SMPTE/EBU N10, Betacam 525 line, Betacam 525J
• 12-bit A/D, 2 x oversampling
• +/- .25 dB to 5.5 mHz Y frequency response
• +/- .25 dB to 2.5 mHz C frequency response
• .5% 2T pulse response
• <2 ns Y/C delay inequity, or Composite (1 x BNC – CVBS on Y)

Video Output Digital

• SD/HD SDI, SMPTE-259/292/296, 10-bit
• Single link 4:2:2 (1 x BNC)
• HDMI v1.3
Note: HDMI requires 1080i, 720p or 1080p to be active; HDMI does not provide support for PsF

Video Output Analog

• Component (3 x BNC)
• HD: YPbPr, RGB
• SD: YPbPr, RGB (component mode)
• SMPTE/EBU N10, Betacam 525 line, Betacam 525J, RGB
• 12-bit D/A, 8 x oversampling
• +/- .2 dB to 5.5 mHz Y frequency response
• +/- .2 dB to 2.5 mHz C frequency response
• .5% 2T pulse response
• <1 ns Y/C delay inequity, or Composite (1 x BNC – CVBS on Y)
• +/- .2 dB to 5.0 mHz Y frequency response
• +/- .2 dB to 1 mHz C frequency response
• <1% Diff Phase
• <1% Diff Gain

Audio Input Digital

• 8-Channel, 24-bit SMPTE-259 SDI embedded audio, 48 kHz sample rate, synchronous
• 2-Channel, 24-bit HDMI embedded audio, 48 kHz sample rate, synchronous
• 8-Channel, 24-bit AES/EBU audio, 48 kHz sample rate, synchronous or nonsynchronous, internal sample rate conversion (4 x BNC)

Audio Input Analog

• 2-Channel, 24-bit A/D analog audio, 48 kHz sample rate, balanced (2 x XLR)
• +24dbu full scale digital
• +/- 0.2db 20 to 20 kHz frequency response (Note: Line or Mic selection via CONFIG menu parameters)

Audio Output Digital

• 8-Channel, 24-bit SMPTE-259 SDI embedded audio, 48 kHz sample rate, synchronous
• 8-Channel, 24-bit HDMI embedded audio, 48 kHz sample rate, synchronous
• 8-Channel, 24-bit AES/EBU audio, synchronous or nonsynchronous, internal sample rate conversion (4 x BNC)

Audio Output Analog

• 2-Channel, 24-bit D/A analog audio, 48 kHz sample rate, balanced (2 x XLR)
• +24dbu full scale digital (0dbFS)
• +/- 0.2db 20 to 20 kHz frequency response
• Stereo unbalanced headphone (1 x 3.5mm mini jack)


• Hardware 10-bit
• Anamorphic: fullscreen
• Pillarbox 4:3: results in a 4:3 image in center of screen with black sidebars
• Zoom 14:9: results in a 4:3 image zoomed slightly to fill a 14:9 image with black side bars
• Zoom Letterbox: results in image zoomed to fill fullscreen
• Zoom Wide: results in a combination of zoom and horizontal stretch to fill a 16:9 screen; this setting can introduce a small aspect ratio change


• Hardware 10-bit
• Anamorphic: fullscreen
• Letterbox: image is reduced with black top and bottom added to image area with the aspect ratio preserved
• Crop: image is cropped to fit new screen size


• Hardware 10-bit
• 1080i to 720p
• 720p to 1080i


• HDMI (when used with compatible cameras)
• LTC Input (1 x BNC)
• LTC output (1x BNC) (Note: active during playback not during record or EE)

Reference Input

• Analog Color Black (1V) or Composite Sync (2 or 4V)
• Looping, nonterminating

Network Interface

• 10/100/1000 Ethernet (RJ-45)
• Embedded web server for remote control

User Interface

• 2 x 20 character display, with dedicated buttons

Closed Captioning Support

• CEA-708, CEA-608

Machine Control

RS-422, Sony 9-pin protocol (via DB-25 breakout cable or optional KLHi-Box)
9-pin D-connector pinout is as follows:











No Connection











Size (w x d x h)

• 19.0" x 12.5" x 1.75" (482.6mm x 377.4mm x 44.5mm) 


• 7.3 lb (3.4 kg)


• 100-240 VAC 50/60 Hz, dual, redundant power supplies, 40W typical


• Safe Operating Temperature: 0 to 40 degrees C (32 to 104 degrees F)
• Safe Storage Temperature (Power OFF): -40 to 60 degrees C (-40 to 140 degrees F)
• Operating Relative Humidity: 10-90% noncondensing
• Operating Altitude: <3,000 meters (<10,000 feet)


Ki Pro Rack lets you record edit-friendly HD ProRes files directly to removable KiStor Media. Once removed from the Ki Pro Rack, the KiStor can be inserted in the AJA KiStor Dock which connects directly to your computer via Thunderboltâ„¢ or USB3, allowing you to rapidly transfer ProRes files that are ready for use immediately in your non-linear editing system.

KiStor Modules

KiStor Storage Modules use thoroughly tested media and are backed by a 1-year warranty. KiStor Storage Modules are also engineered with the rigors of production use in mind; not only are robust housings used for the media, but connectors rated for multiple insertions and removals are used, unlike bare HDD or SSD connectors that are not engineered for repeated use. Additionally, KiStor modules can be formatted in the device making it a true stand alone recorder; connecting the media to a host computer to format media is not necessary.

More Information

KiStor Dock

This external docking station provides both Thunderbolt™ and USB 3.0 connections for ultra-fast file transfers between either PC or Mac host computer and KiStor modules. Works with all KiStor modules.