AJA: ROI-DVI DVI/HDMI to SDI Region of Interest scaling and DVI loop through
Key Features
- DVI to SDI conversion
- Region of Interest scaling
- DVI loop through
- Audio embedding
- Aspect ratio conversion
- Genlock input
- Configure via USB port and supplied Mini-Config software
- Uses 5-18VDC power (universal power supply included)
- 5-year warranty
AJA: DVI/HDMI to SDI with Region of Interest scaling and DVI loop through
AJA’s ROI-DVI Mini-Converter allows exceptionally high quality conversion of computer DVI and HDMI outputs to baseband video over SDI at an affordable price and a very portable size. With extensive audio functionality, incredible image scaling as well as aspect and frame rate conversion, ROI-DVI fulfills the growing need to properly incorporate computer signals into the video world without sacrificing budget or space.
Region of Interest
Eliminate extra interface clutter and menu bars and extract only the portion of the computer screen you want.
Connecting a ROI Mini-Converter via USB to a computer running the free Mini-Config application lets you interactively select a Region of Interest from the incoming computer signal and have full control over how that region is scaled to the output resolution using AJA’s high quality scaling algorithms for the cleanest picture quality possible.

Conversion
Take full control of aspect ratio and frame rate conversion with on-screen controls in the Mini-Config software that show you exactly what your source and output will look like and what formats are coming in and going out. Simple menu controls let you quickly choose the proper output for any situation.
Connectivity
ROI utilizes a direct loop through, allowing it to be placed in-line so you still have a connection to an external monitor while extracting to SDI. The reference input ensures the SDI signal out of ROI is locked for use throughout a production or facility.
Audio
ROI accepts 2-channel audio from the 3.5mm analog audio input or embedded 8-channel audio from an HDMI input. The audio source and routing can be selected in the Mini-Config software and is embedded in the SDI output. This allows computer audio to be embedded within the SDI signal for easy, synchronized routing.
Video Input
- 1x DVI-D input connector
Input Formats
- Computer Signals:
- WUXGA (1920x1200) 60 Hz max
- VGA (640x480) minimum
Note: Frame rates limited by the 165Mhz max rate of the DVI Rx
- Video Signals:
- 1080p 23.98, 24, 25, 29.97, 30, 50, 59.94, 60
- 1080i 50, 59.94
- 720p 23.98, 24, 25, 29.97, 30, 50, 59.94, 60
- 525i, 625i
- 480p, 576p (DSLR cameras)
Input Data Range Control
- 1-255 (default – 8 bit nomenclature)
- 16-235
Reference Input
Permissible reference video inputs include:
- 525 Color Black
- 625 Color Black
- 720p Tri-level Sync
- 1080i Tri-level Sync
- 1080p Tri-level Sync
Video Outputs
- 1 x DVI-D loop through connector
- 3G-SDI, SMPTE-259/292/296/424/425, 1 x BNC
Output Formats
- 1080p 50, 59.94, 60 - SMPTE 425-1 Level A Mapping structure 1 (1920X1080 4:2:2 10-bit YCbCr)
- 1080p 23.98, 24, 25, 29.97, 30
- 1080i 25, 29.97, 30
- 720p 50, 59.94, 60
- 625i 25
- 525i 29.97
HDCP
- ROI does not encode the HDMI output with HDCP encryption
- ROI does not accept HDCP input.
Audio Inputs
- 1 x Analog 3.5mm TRS, 2-channel
- HDMI embedded audio, 24-bit, 8-channel
Audio Output
- SDI embedded audio, 24-bit, 2-channel or 8-channel
User Controls
- USB port used with supplied cable and MiniConfig software application to configure device via Mac or Windows
Power
- Uses AJA Power Supply model DWP-U-R1 (included with purchase)
- 100-240V, 50/60Hz Universal Input
- +5 to 18V DC regulated, 8 watts max
Size
- 5.765" x 4.020" x 0.9" (146.431mm x 102.108mm x 22.86mm)
Environment
- Operating Temperature: 0 to 40 degrees C (32 to 104 degrees F)
- Operating Relative Humidity: 10-90% non-condensing
- Operating Altitude: <3,000 meters (<10,000 feet)
- Safe Storage Temperature (Power OFF): -40 to 60 degrees C (-40 to 140 degrees F)