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SCIENCE IMAGE FLOW 2 4K 12G-SDI/HDMI Up/Down/Cross Converter

BH #SCSIFLOW2 • MFR #SI-FLOW2
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SCIENCE IMAGE FLOW 2 4K 12G-SDI/HDMI Up/Down/Cross Converter
Key Features
  • Signal Converter, Receiver/Transmitter
  • 12G-SDI I/O, HDMI 2.0 I/O
  • Supports up to 4K at 60 Hz
  • Conversion to 35 SMPTE/PAL/NTSC Formats
The FLOW 2 4K 12G-SDI/HDMI Up/Down/Cross Converter from SCIENCE IMAGE combines frequency conversion with an optical transceiver in one very compact device. As a worthy successor to the FLOW 4K, the device employs a user-friendly intelligent scroll wheel to facilitate operation using just one finger to scroll up and down to choose the menu and manage the settings without needing to enter the web UI.
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$995.00
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SCIENCE IMAGE Flow 2 Overview

The FLOW 2 4K 12G-SDI/HDMI Up/Down/Cross Converter from SCIENCE IMAGE combines frequency conversion with an optical transceiver in one very compact device. As a worthy successor to the FLOW 4K, the device employs a user-friendly intelligent scroll wheel to facilitate operation using just one finger to scroll up and down to choose the menu and manage the settings without needing to enter the web UI.

Ideal for professional use in a broad range of applications, including broadcast and large events, video conferences, and variety shows, the unit performs up and down conversion in 35 formats at up to UHD 4K60 with support for 12G-SDI/HDMI inter-conversion and output with just a click. Capable of simultaneously transmitting and receiving 3G/6G/12G-SDI and HDMI 4K video, the unit handles maximum transmission to up to 12.4 miles.

An optical transceiver switch in the web UI enables users to easily select between operating as an HDMI or an SDI optical transceiver, with the scroll wheel facilitating SDI and HDMI input priority settings, transmission or reception, and selection of the desired output resolution. The optical transceiver also works as an SDI/HDMI bidirectional converter, giving you a very affordable solution for multiple tasks with broad flexibility and convenience. Power can be received by the device either through the Ethernet input (PoE) or the DC connection with the included 12 VDC power supply.

Features at a Glance
  • Control over RJ45 Ethernet port
  • 35 SMPTE and PAL/NTSC conversion formats supported
  • Optical receivers can transmit and receive signals from up to 12.4 miles away
  • OLED screen displays real-time status of encoding/decoding, input/output format, IP, and other information
  • Integrated 1/4"-20 thread
  • Supports 12G-SDI/HDMI 2.0 and SMPTE/ITU international broadcast standard formats
  • Compatible with multiple sampling formats (4:4:4, 4:2:2, 4:2:0) 
  • Accurate and fast signal recognition 
  • Adopts Xilinx FPGA SOC hardware , internal design, and embedded Linux system 
  • Aviation technology with aluminum integrated design and milling

SCIENCE IMAGE Flow 2 Specs

Key Specs
Video I/O
Input
1x BNC (12G-SDI) Female
1x HDMI 2.0 Female
Output
1x BNC (12G-SDI) Female
1x HDMI 2.0 Female
Input/Output
1x Socket for SFP Module (12G-SDI)
Audio I/O
Input
1x 1/8" / 3.5 mm TRS Analog Female
Input/Output
1x 1/8" / 3.5 mm TRRS Headphone/Microphone Analog Female
Video Resolution
BNC Input/Output (4:4:4/4:2:2 RGB, YUV)
3840 x 2160 at 23.98/24/25/29.97/30/50/59.94/60 fps
2048 x 1080 at 23.98/24/25 fps
1920 x 1080p at 23.98/24/25/29.97/30/50/59.94/60 fps
1920 x 1080PsF at 23.98/24/25/29.97/30 fps
1920 x 1080i at 50/59.94/60 fps
1280 x 720 at 50/59.94/60 fps
HDMI Input/Output (4:4:4/4:2:2 RGB, YUV)
3840 x 2160 at 23.98/24/25/29.97/30/50/59.94/60 fps
2048 x 1080 at 23.98/24/25 fps
1920 x 1080p at 23.98/24/25/29.97/30/50/59.94/60 fps
1920 x 1080PsF at 23.98/24/25/29.97/30 fps
1920 x 1080i at 56/59.94/60 fps
1280 x 720 at 50/59.94/60 fps
Fiber Input/Output (4:4:4/4:2:2 RGB, YUV)
3840 x 2160 at 23.98/24/25/29.97/30/50/59.94/60 fps
2048 x 1080 at 23.98/24/25 fps
1920 x 1080p at 23.98/24/25/29.97/30/50/59.94/60 fps
1920 x 1080PsF at 23.98/24/25/29.97/30 fps
1920 x 1080i at 50/59.94/60 fps
1280 x 720 at 50/59.94/60 fps
Audio Format
Analog, Unspecified Digital Signal Input/Output: 48 kHz
Broadcast System Compatibility
NTSC, PAL
Wireless
No
Inputs/Outputs
Video I/O
Input
1x BNC (12G-SDI) Female
1x HDMI 2.0 Female
Output
1x BNC (12G-SDI) Female
1x HDMI 2.0 Female
Input/Output
1x Socket for SFP Module (12G-SDI)
Audio I/O
Input
1x 1/8" / 3.5 mm TRS Analog Female
Input/Output
1x 1/8" / 3.5 mm TRRS Headphone/Microphone Analog Female
Other I/O
Input/Output
1x RJ45 (LAN)
Expansion Slots
1x SFP Slot
Format Support
Video Resolution
BNC Input/Output (4:4:4/4:2:2 RGB, YUV)
3840 x 2160 at 23.98/24/25/29.97/30/50/59.94/60 fps
2048 x 1080 at 23.98/24/25 fps
1920 x 1080p at 23.98/24/25/29.97/30/50/59.94/60 fps
1920 x 1080PsF at 23.98/24/25/29.97/30 fps
1920 x 1080i at 50/59.94/60 fps
1280 x 720 at 50/59.94/60 fps
HDMI Input/Output (4:4:4/4:2:2 RGB, YUV)
3840 x 2160 at 23.98/24/25/29.97/30/50/59.94/60 fps
2048 x 1080 at 23.98/24/25 fps
1920 x 1080p at 23.98/24/25/29.97/30/50/59.94/60 fps
1920 x 1080PsF at 23.98/24/25/29.97/30 fps
1920 x 1080i at 56/59.94/60 fps
1280 x 720 at 50/59.94/60 fps
Fiber Input/Output (4:4:4/4:2:2 RGB, YUV)
3840 x 2160 at 23.98/24/25/29.97/30/50/59.94/60 fps
2048 x 1080 at 23.98/24/25 fps
1920 x 1080p at 23.98/24/25/29.97/30/50/59.94/60 fps
1920 x 1080PsF at 23.98/24/25/29.97/30 fps
1920 x 1080i at 50/59.94/60 fps
1280 x 720 at 50/59.94/60 fps
Audio Format
Analog, Unspecified Digital Signal Input/Output: 48 kHz
Embedded Audio
Fiber/HDMI/SDI
Standards
Video Standard Compliance
SMPTE: 259M/292M/296M/372M/424M/425M/ST-2081-1/ST-2081-10/ST-2082-1/ST-2082-10
HDCP Support
No
HDR Support
No
Broadcast System Compatibility
NTSC, PAL
Hardware
Wireless
No
Display
Display
1.3" OLED
Power
Power I/O
1x Barrel (12 VDC ) Input
Power Consumption
Device: 12 W
General
Operating Conditions
37 to 72°F / 5 to 40°C up to 90% Humidity
Storage Conditions
-4 to 140°F / -20 to 60°C
Dimensions
4.9 x 4.5 x 0.9" / 125 x 115 x 24 mm
Weight
12.9 oz / 365 g
Packaging Info
Package Weight
1.6 lb
Box Dimensions (LxWxH)
6.1 x 6.1 x 2.8"

SCIENCE IMAGE Flow 2 Reviews

Not broadcast-grade

By R
Rated 2 out of 5
Date: 2026-04-09

PoE power is nice. What's not nice is that they arrived to me with audio passthrough defaulted to off, and the only option to configure is through the web GUI. What's not nice is it doesn't show me the correct DHCP IP because my DHCP takes too long to reply. What's not nice is there is no support for SDI ancillary like Captions data. Save your money and buy a Decimator.

See any errors on this page?

Can the HDMI and SDI outputs be different scales?

Can the HDMI and SDI outputs be different scales?
Asked by: Marti
No, the SCIENCE IMAGE FLOW 2 4K 12G-SDI/HDMI Up/Down/Cross Converter cannot output different resolutions from the HDMI and SDI.
Answered by: Jonathan S
Date published: 2025-05-20
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