Atomos and Blackmagic Design Mini Video Converters

Atomos and Blackmagic Design mini video converters offer format conversion in compact packages. Video conversion is essential in the industry and shouldn't be bogged down by bulky equipment, which is where these mini converters come in!

Atomos Connect H2S Video Converter

The Atomos Connect H2S is an HDMI to HD-SDI mini video converter. It's the world's smallest HDMI to SDI converter and can fit in your pocket. A single HDMI input is converts the signal to two SDI outputs. The continuous power dual battery system is patent pending and gives you the power you need to work out in the field. One internal battery gives you up to one hour of operation in normal conversion mode, while one external battery (included) gives you up to 10 hours of operation. The external battery also charges the internal battery when it's connected to the Atomos H2S. This video converter also features a test pattern generator, audio test tone and a flashlight mode that allows for operation in dark or dimly lit applications.

This battery powered-device stands out among the other devices in this comparison. While it can be used in multiple applications and environments, it truly shines by being portable enough to carry with you out in the field.

Atomos Connect H2S Video Converter

HDMI to HD-SDI Video Conversion with Continuous Power Dual Battery System

Weight and Dimensions:

  • 113g (without battery) / 213g (with battery)
  • 45.0mm x 76.5mm x 34.0mm

Power Consumption: 2W while converting


  • Internal up to 1 hour
  • 2600maH - 10hrs (included)
  • 5200mAh (NP Series, 7.4V - 16.8V) -20hrs (optional)
  • 7800mAh - 30hrs (optional)
  • AC Power Supply 100-240V (included)
  • DTap Adapter (optional)

Continous Power (Patent Pending): Connect acts as a battery, feeding continuous power into your Ninja, Samurai or another Connect

Built-in 3:2 Pulldown Removal:

  • SMPTE 75%, Color Bars 75 and 100%, SDI EQ/PLL Pathological, Audio Tone 1kHz @ -20dBfs

USB Interface: Firmware Update Interface ONLY

Video Input: HDMI x 1

Video Out: 3G/HD/SD-SDI x 2

Audio (In/Out): Embedded Audio 2ch, 24, 20 or 16-bit

Timecode and Rec Trigger Exchange:

  • SDI: Sony, Canon, Panasonic, Arri, RED
  • HDMI: Sony, Canon Timecode, Canon Start/Stop

Supported Formats (In/Out): 1080p60, 1080p59.94, 1080p50, 1080i60, 1080i59.94, 1080i50, 1080p30, 1080p29.97, 1080p25, 1080p24, 1080p23.98, 1080pSF30, 1080pSF29.97, 1080pSF25, 1080pSF24, 1080pSF23.98, 720p60, 720p59.94, 720p50, 486i59.94, 480i59.94, 576i50

Blackmagic Mini Video Converter

This is a Blackmagic HDMI to 12G-SDI mini video converter. It's a great device for connecting HDMI-compatible consumer electronics with professsional SDI video gear. HDMI can be converted to SD, HD and Ultra HD-SDI. Audio is embedded in the SDI output from the HDMI inpur or from the two 1/4-inch input jacks. You can control settings and parameters through either the built-in DIP switches or through a USB connection to a Mac or Windows computer. This Blackmagic mini video converter is powered by a 12V universal power supply. It can be rack mounted, allowing it to fit in tight spaces or existing rack setups.

Blackmagic Mini Video Converter

ConveHDMI 4K to SD, HD and Ultra HD SDI

Video Input 1 x HDMI, Type A
Video Output 2 x 6G-SDI

Note: Both 6G outputs send duplicate signals and can't be used to support Dual Link formats
Multi-Rate Support Auto detection of SD, HD, 3G, or 6G SDI signals
Reclocking Yes
Audio Input 2 x 1/4" jack, 2 channels of analog or AES/EBU digital audio
Format Support SD:
NTSC 525/29.97 and 525/23.98
PAL 625/25

720p 59.94/60
1080i 50/59.94/60
1080PsF 23.98/24/25/29.97/30
1080p 23.98/24/25/29.97/30/50/59.94/60

2048x1080PsF 23.98/24/25
2048/1080p 23.98/24/25

3840x2160p 23.98/24/25/29.97/30
4096x2160p 24
SDI Compliance SMPTE 292M, SMPTE 259M, SMPTE 296M, ITU-R BT.656, and ITU-R BT.601
SDI Video Rates Switchable between SD, HD, and 6G-SDI
SDI Video Sampling 4:2:2
SDI Audio Sampling 24-bit, 48 kHz
SDI Color Precision 4:2:2
SDI Color Space YUV
SDI Auto Switching Automatically detects SD, HD, or 6G-SDI
HDMI Format Support SD:
NTSC 525/23.98 and 525/29.97
PAL 625/25

720p 50/59.94/60
1080i 50/59.94/60
1080p 23.98/24/25/29.97/30/50/59.94/60

2048x1080p 23.98/24/25

3840x2160p 23.98/24/25/29.97/30
4096x2160p 24
HDMI Color Space YUV and RGB
HDMI Color Precision 4:2:2
HDCP Compliance No. HDMI input is unable to capture from copy-protected HDMI sources
Format Conversion HD scaler and SD down conversion
Settings Control DIP switches or USB software for Mac PS X and Windows
Firmware Upgradeable Via USB 2.0
Power Supply 12 VDC
Power Consumption 4.44 W
Operational Voltage Range 12 to 31 VDC
Operating Temperature 32 to 104° F (0 to 40 ° C)
Storage Temperature -4 to 113° F (-20 to 45 ° C)
Relative Humidity 0 to 90% non-condensing
Dimensions 4.49 x 3.63 x 0.90" (11.40 x 9.22 x 2.29 cm)
Weight 8.6 oz (243.8 g)
Blackmagic OpenGear Video Converter

This Blackmagic OpenGear HDMI to SDI video converter is actually a module card. It slots into OpenGear hardware and offers a broadcast / television solution for format conversion. USB allows you to update to new formats. The latest 3G-SDI technology is built into the card, meaning it's fully compatible with your SD and HD equipment. Low SDI jitter, long SDI cable lengths and ultra low noise analog A/V make this a fully capable broadcast-grade video converter.

Blackmagic OpenGear Video Converter

HDMI to SDI Video Converter Module Card

SDI Output Switchable between SD, HD and 3 Gb/s SDI
Analog Audio 2 channels of professional balanced analog audio with standard 1/4 inch jack connections
AES/EBU 2 channels of professional balanced digital with standard 1/4 inch jack connections
Format SDI
625/25 PAL, 525/29.97 NTSC, 1080PsF23.98, 1080PsF24, 1080PsF25, 1080i50, 1080i59.94, 1080i60, 720p50, 720p59.94 and 720p60

625/25 PAL, 525/29.97 NTSC, 625/50p PAL, 525/59.94p NTSC, 1080p23.98/24, 1080i50, 1080i59.94/60, 720p50 and 720p59.94/60
Sampling 4:2:2
Power Requirements Powered by rack chassis


  • High quality video format conversion
  • Compact size
  • Variable portability


  • Only the Atomos Connect H2S is truly portable, while the two Blackmagic mini video converters have their limitations
  • Only the Atomos Connect H2S is battery-powered, which leaves the two Blackmagic devices with more limitations
  • Blackmagic carries multiple devices for conversion beyond HDMI / SDI, while Atomos Connect converters only do HDMI / SDI


All three of these mini video converters have their place. The Atomos Connect H2S is great if you're going to be doing video conversion out in the field. The continous power dual battery system gives you a redundant solution that you can put in your pocket. However, Atomos mini video converters only work in HDMI and SDI formats. Compare that to Blackmagic mini video converters. While they aren't as portable and compact as Atomos devices, Blackmagic offers various format converters, ranging from optical, analog, HDMI, SDI and more! The odd one out here is the OpenGear video converter. That's a great choice if you need a television-broadcast grade modular unit, but you'll need to acquire the chassis as well in order to utilize the video card.

So it basically boils down to environment!

  • Atomos Connect H2S Mini Video Converter - great for true portability out in the field
  • Blackmagic Mini Video Converter - great for the range of formats
  • Blackmagic OpenGear Video Converter - great for modular setups in television broadcast applications/environments

For technical and availability info call (877) 477 6432 or Email us