The Best SDI Converters (2023 Update)

Updated 1 month ago

This is a complete list of SDI converters I use and trust.

In this list you'll find:

Let's get started...

HDMI Signal Converters

Converters in this category will convert HDMI to SDI or SDI to HDMI.

They only do signal conversions and do not change characteristics of the video signal like resolution, frame rate, aspect ratio, or color space.

They work best when your source signal is already SMPTE-compliant and you do not need to change any part of the signal before output.

They will also interface with digital DVI components with a proper DVI male to HDMI female adapter or DVI female to HDMI male adapter.

IMPORTANT: I always recommend scaler converters when converting HDMI signals from computers and consumer devices to SDI.

I only recommend products I use and trust. When you buy through links here, I may earn a commission at no extra cost to you. Why You Can Trust Me

Best Overall HDMI/SDI Converter

Blackmagic Micro Converter BiDirectional SDI/HDMI 12G

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This box will cover just about every HDMI/SDI signal conversion, and do so at a reasonable price.

Notable highlights include...

Convert in both directions simultaneously, even in different input formats
Get camera and lens control, preview and program tally, and camera record start/stop capability when put between compatible Blackmagic switchers and Blackmagic cameras
Apply a 3D LUT to one or both outputs for creative control of final look

Works Best For

SDI to HDMI conversions for non-critical displays
Interfacing Blackmagic cameras with Blackmagic ATEM switchers
LUT box functionality for inline color transforms or color grading

Pros

Price
LUT functionality
Blackmagic camera control
Power from a variety of AC and DC power sources over USB

Cons

Included power supplies have a notable failure rate
USB power ports can be insecure

IMPORTANT: I want to be clear that I do not consider the unidirectional Blackmagic Micro Converters to be equal with the bidirectional Blackmagic Micro Converters. The bidirectional models tend to be much more reliable, more than likely due to the fact that they are engineered to handle twice the throughput and heat compared to the unidirectional models. Therefore, the bidirectional Micro Converters are the bare minimum I recommend.

Available Models

Specifications
¹ Simultaneous HDMI/SDI conversion possible, including for different input formats. ² If only one input is active, the active input will be sent to both HDMI and SDI outputs.
Conversions	HDMI to SDI^{1, 2} SDI to HDMI^{1, 2} Apply 3D LUT to either output or both outputs
Video I/O	1 x HDMI input (Type A - Full Size) 1 x 12G-SDI input 1 x HDMI output (Type A - Full Size) 1 x 12G-SDI output
Audio I/O	Embedded audio from inputs
Other I/O	1 x USB-C for updates and configuration
Input Formats	SMPTE formats up to 4096 x 2160 at 60 fps
Output Formats	Same formats as inputs (with or without 3D LUT applied)
Reclocking	Yes
Standards Conversion	No
Scaling	No
Power	1 x USB-C port (4.4V to 5.25V DC - 5 watts max; models available with and without AC power adapter)

Best Value HDMI/SDI Converter

Decimator MD-LX

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No frills or fancy features here. Just rock-solid performance from a trusted brand.

If both inputs are active, it will do simultaneous conversion in both directions.

If only one input is active, it will send signal from the active input to both outputs.

Decimator converters are always top quality and reasonably priced, which is why it can often be difficult to find them in stock.

Works Best For

SDI to HDMI conversions for displays
HDMI to SDI conversions for sources that are already SMPTE-compliant

Pros

Price
Reliability
Power from a variety of AC and DC power sources over USB

Cons

Decimator Design's current status (see below)
USB power ports can be insecure

IMPORTANT: Decimator Design is unfortunately showing less signs of life day by day. While they are still shipping products, albeit sporadically and unpredictably, there have been no new products or website updates since April 2020 and they haven't been appearing at recent major trade shows. All of that to say: If you can find this converter in stock and priced at or below $99 MSRP, then don't hesitate to get it. But I don't recommend paying more than MSRP or making plans around any promised back-order fulfillment dates, because there are plenty of other great options out there.

Specifications
¹ Simultaneous HDMI/SDI conversion possible, including for different input formats. ² If only one input is active, the active input will be sent to both HDMI and SDI outputs.
Conversions	HDMI to SDI^{1, 2} SDI to HDMI^{1, 2}
Video I/O	1 x HDMI input (Type A - Full Size) 1 x 3G-SDI input 1 x HDMI output (Type A - Full Size) 1 x 3G-SDI output
Audio I/O	Embedded audio from inputs
Other I/O	1 x USB 2.0 (Micro B) for configuration
Input Formats	SMPTE formats up to 1920 x 1080 at 60 fps
Output Formats	Same formats as inputs
Reclocking	Yes
Standards Conversion	No
Scaling	No
Power	1 x USB port (Micro B; 4.4V to 5.25V DC - 2.5 watts max; AC power adapter and cable included)

Best Budget HDMI/SDI Converter

Blackmagic Micro Converter BiDirectional SDI/HDMI 3G

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If you don't need 4K capability or the LUT feature found in the top pick above, this lower priced model is a great solution.

You still get simultaneous conversion in both directions, even in different formats, as well as the same Blackmagic camera control and tally capabilities found in the 12G model.

And the price can't be beat.

Works Best For

SDI to HDMI conversions for non-critical displays
Interfacing Blackmagic cameras with Blackmagic ATEM switchers

Pros

Price
Blackmagic camera control
Power from a variety of AC and DC power sources over USB

Cons

No LUT functionality like in the 12G model
Included power supplies have a notable failure rate
USB power ports can be insecure

Available Models

Specifications
¹ Simultaneous HDMI/SDI conversion possible, including for different input formats. ² If only one input is active, the active input will be sent to both HDMI and SDI outputs.
Conversions	HDMI to SDI^{1, 2} SDI to HDMI^{1, 2}
Video I/O	1 x HDMI input (Type A - Full Size) 1 x 3G-SDI input 1 x HDMI output (Type A - Full Size) 1 x 3G-SDI output
Audio I/O	Embedded audio from inputs
Other I/O	1 x USB-C for updates and configuration
Input Formats	SMPTE formats up to 1920 x 1080 at 60 fps
Output Formats	Same formats as inputs
Reclocking	Yes
Standards Conversion	No
Scaling	No
Power	1 x USB-C port (4.4V to 5.25V DC - 2.5 watts max; models available with and without AC power adapter)

Best HDMI/SDI Converters Money Can Buy

Theatrixx xVision

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Theatrixx makes some of the most robust, over-engineered, and impeccably crafted converters I've ever seen. And those are all good things.

Not only are their converters extremely reliable, they are also replete with clever features and functionality.

When you want the best, these are a must-have.

Works Best For

Mission-critical conversions
Mobile environments
Mounting on truss or rigging

Pros

Integrated power supply
Locking ports
Loop-thru power output
Multiple mounting options and magnetic stacking system
Optional powerCON TRUE1 ports

Cons

Premium price
Size and weight might be a downside for some situations

Available Models

Specifications
Conversions	HDMI to SDI SDI to HDMI (Bidirectional models only) Simultaneous HDMI to SDI and SDI to HDMI (Bidirectional models only)
Video I/O	1 x HDMI input (Type A - Full Size) with locking system 1 x 3G-SDI input (bidirectional models only) 2 x 3G-SDI outputs (3G-SDI and bidirectional models) 2 x 12G-SDI outputs (12G-SDI models) 1 x HDMI output (Type A - Full Size) with locking system (bidirectional models only)
Audio I/O	Embedded audio from inputs
Other I/O	N/A
Input Formats	SMPTE formats up to 1920 x 1080 at 60 fps SMPTE formats up to 4096 x 2160 at 60 fps (12G-SDI models only)
Output Formats	Same format as input
Reclocking	Yes
Standards Conversion	No
Scaling	No
Power	1 x Locking powerCON input (standard - cable included) 1 x Locking powerCON TRUE1 input (optional) 1 x Edison Nema 5-15 loop-thru output (standard) 1 x Locking powerCON TRUE1 loop-thru output (optional)

Great Value HDMI/SDI Converters

AVMATRIX SC1221 & SC1112

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AVMATRIX is somewhat new to the market, so their track record in terms of quality and reliability is yet to be seen.

However, I do like the way these boxes are made and I have seen good results with them so far.

There really is nothing special here, though. Just a nicely built converter at a decent price.

However, the included detachable mounting bracket is a nice touch.

Available in both HDMI to 3G-SDI (SC1221) and 3G-SDI to HDMI (SC1112) models.

Works Best For

SDI to HDMI conversions for non-critical displays
HDMI to SDI conversions for sources that are already SMPTE-compliant
Battery powered situations

Pros

Price
Impressive build quality
Power draw of 2 watts or less
Detachable mounting bracket included

Cons

Not bidirectional
Not enough history to determine long-term reliability
USB power ports can be insecure

Specifications
Conversions	HDMI to SDI (SC1221) SDI to HDMI (SC1112)
Video I/O	1 x HDMI input (Type A - Full Size) (SC1221) 1 x 3G-SDI input (SC1112) 2 x 3G-SDI outputs (SC1221) 1 x 3G-SDI loop output (SC1112) 1 x HDMI output (Type A - Full Size) (SC1221)
Audio I/O	Embedded audio from input
Other I/O	N/A
Input Formats	SMPTE formats up to 1920 x 1080 at 60 fps
Output Formats	Same format as input
Reclocking	No
Standards Conversion	No
Scaling	No
Power	1 x USB port (Micro B; 3.3V to 5V DC - 2 watts max; AC power adapter and cable included)

HDMI Scaler Converters

Converters in this category not only convert HDMI to SDI and SDI to HDMI, they also provide additional processing between the input(s) and output(s) that can do some, or all, of these actions:

Convert one standard to another (e.g. 720p59.94 input to 1080p59.94 output)
Convert the frame rate (e.g. 60 fps input to 29.97 fps output)
Scale the image (e.g. 1920 x 1080 input to 1280 x 720 output)
Scale and crop, letterbox, or pillarbox the video (e.g. 1920 x 1080 scaled and letterboxed in a 720 x 480 output)
Convert the color encoding/space (e.g. RGB input to YCbCr output)
Flip and/or rotate the video
Frame synchronization (e.g. re-time input frames to sync with a genlocked system)

These converters are also commonly referred to as cross converters, down/up/cross (DUC) converters, up/down/cross (UDC) converters, standards converters, or scan converters.

They will also interface with digital DVI components with a proper DVI male to HDMI female adapter or DVI female to HDMI male adapter.

If your source signal is not already SMPTE-compliant, or you need to change things like resolution or frame rate, then these converters are what you need.

IMPORTANT: I always recommend these converters when converting HDMI signals from computers and consumer devices to SDI. This ensures the input signal is properly converted to full SMPTE specifications before being passed to the output.

Best Overall HDMI/SDI Scaler Converter

Decimator 12G-Cross

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When this was released in 2019 I was 🤯.

12G-SDI, robust scaling, and the same dependability Decimator is known for, all for less than $500 USD. That was simply unimaginable at the time and, even still, is pretty much impossible to beat.

If you need, or ever plan on needing, 4K or UHD capability then this is a no-brainer. Just get it! (If you can find it)

Works Best For

Almost every HDMI/SDI conversion

Pros

4 x 12G-SDI outputs
Scale and convert any SMPTE format and 294 different VESA formats
Lock reference to any input, including external genlock
Vertical and horizontal image flipping
Metal locking DC power input

Cons

Finding one in stock 😭
Decimator Design's current status (see below)

IMPORTANT: Decimator Design is unfortunately showing less signs of life day by day. While they are still shipping products, albeit sporadically and unpredictably, there have been no new products or website updates since April 2020 and they haven't been appearing at recent major trade shows. All of that to say: If you can find this converter in stock and priced at or below $495 USD MSRP, then don't hesitate to get it. If you can't find it, then don't be surprised if you have to wait many months for it to arrive. And I would venture to guess there is a slight possibility it may never arrive at all. Although I really do hope that guess is wrong.

Specifications
Conversions	HDMI to SDI SDI to HDMI Simultaneous HDMI to SDI and SDI to HDMI SDI to 4 x SDI distribution
Video I/O	1 x HDMI input (Type A - Full Size) 1 x 12G-SDI input 1 x HDMI output (Type A - Full Size) 2 x 12G-SDI outputs 2 x 12G-SDI outputs (can be used as reclocked SDI loop outputs or additional regular outputs)
Audio I/O	Embedded audio from inputs only
Other I/O	1 x BNC reference input 1 x USB 2.0 (Mini B) for updates and configuration
Input Formats	SMPTE formats up to 4096 x 2160 at 60 fps 294 different VESA formats (HDMI input only)
Output Formats	SMPTE formats up to 4096 x 2160 at 60 fps
Reclocking	Yes (SDI loop outputs 1 and 2)
Standards Conversion	Yes
Scaling	Yes
Power	1 x Metal locking DC power input (5V to 32V DC; AC power adapter included)

Best Value HDMI/SDI Scaler Converters

Lumantek ez-HSV+ & ez-SHV+

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These epitomes of bang for the buck pack a ton of features into a crazy awesome price.

They offer easy DIP switch adjustments, 16 different SMPTE output formats, 3.5mm stereo audio ports for embedding/de-embedding 2 channels of analog audio, letterboxing HD inputs on SD outputs, pillarboxing SD inputs on HD outputs, a built-in LCD screen to monitor input video and signal parameters, and mounting brackets.

And, after being around a few years now, these boxes have proven to be quite reliable and durable.

So, if you don't need 4K or UHD capability and don't need to deal with any rare or odd formats/standards, these are just about the best value out there.

Available in both HDMI to 3G-SDI (ez-HSV+) and 3G-SDI to HDMI (ez-SHV+) models.

Pros

Easy to use and understand DIP switch settings
Built-in LCD for monitoring source video, audio, and settings
Mounting brackets included

Cons

Not bidirectional
Lack of support for some formats like PsF and VESA
DC power input doesn't lock

Specifications
Conversions	HDMI to SDI (ez-HSV+) SDI to HDMI (ez-SHV+) Analog audio embedding (ez-HSV+) Analog audio de-embedding (ez-SHV+)
Video I/O	1 x HDMI input (Type A - Full Size) (ez-HSV+) 1 x 3G-SDI input (ez-SHV+) 2 x 3G-SDI output (ez-HSV+) 1 x 3G-SDI loop output (ez-SHV+) 1 x HDMI output (Type A - Full Size) (ez-SHV+)
Audio I/O	1 x 3.5mm stereo analog audio input (ez-HSV+) 1 x 3.5mm stereo analog audio output (ez-SHV+)
Other I/O	N/A
Input Formats	SMPTE formats up to 1920 x 1080 at 60 fps
Output Formats	SMPTE formats up to 1920 x 1080 at 60 fps
Reclocking	No
Standards Conversion	Yes
Scaling	Yes
Power	1 x DC input (5V to 18V - 4 watts max; AC power adapter included)

Best Value HDMI/SDI Scaler Converter

Blackmagic Mini Converter UpDownCross HD

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An incredible value that covers a wide variety of situations.

Scale any input up to 1920 x 1080 at 60 fps, including DVI input formats like 640 x 480, 800 x 600, and 1024 x 768.

Other handy features include aspect ratio conversion for standard definition inputs and a reference input for receiving sync from external sources.

When the budget is tight but the need is still there, this might just save the day.

Pros

Price
Scale a variety of SMPTE and computer inputs
External reference input
Metal locking DC power input

Cons

Only converts one direction at a time
DVI input formats cannot be converted to every SMPTE output format

Specifications
Conversions	HDMI to SDI SDI to HDMI
Video I/O	1 x HDMI input (Type A - Full Size) 1 x 3G-SDI input 1 x HDMI output (Type A - Full Size) 2 x 3G-SDI outputs 1 x 3G-SDI loop output
Audio I/O	Embedded audio from inputs
Other I/O	1 x BNC reference input
Input Formats	SMPTE formats up to 1920 x 1080 at 60 fps DVI formats 640 x 480, 800 x 600, or 1024 x 768 up to 60 Hz (HDMI only)
Output Formats	SMPTE formats up to 1920 x 1080 at 60 fps
Reclocking	Yes
Standards Conversion	Yes
Scaling	Yes
Power	1 x Metal locking DC power input (6V to 36V DC - 5 watts; AC power adapter included)

Another Great HDMI/SDI Scaler Converter

Decimator MD-HX

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The tried and true red box that brought us the phrase "Just get a Decimator."

Convert HDMI to/from SDI in both directions simultaneously, and scale either the HDMI or SDI input in the process.

Rock solid, versatile, and reasonably priced. This converter's reputation speaks for itself.

Pros

4 x 3G-SDI outputs
Scale and convert any SMPTE format up to 1920 x 1080 at 60 fps
Vertical and horizontal image flipping
Metal locking DC power input

Cons

First 2 SDI outputs default to SDI loop outputs (setting can be disabled, but this confuses newbies)
Included HDMI cable can be unreliable
Decimator Design's current status (see below)

IMPORTANT: Decimator Design is unfortunately showing less signs of life day by day. While they are still shipping products, albeit sporadically and unpredictably, there have been no new products or website updates since April 2020 and they haven't been appearing at recent major trade shows. All of that to say: If you can find this converter in stock and priced at or below $295 USD MSRP, then don't hesitate to get it. But don't be surprised if you have to wait a few weeks or months for one to arrive.

Specifications
Conversions	HDMI to SDI SDI to HDMI Simultaneous HDMI to SDI and SDI to HDMI SDI to 4 x SDI distribution
Video I/O	1 x HDMI input (Type A - Full Size) 1 x 3G-SDI input 1 x HDMI output (Type A - Full Size) 2 x 3G-SDI outputs 2 x 3G-SDI outputs (can be used as reclocked SDI loop outputs or additional regular outputs)
Audio I/O	Embedded audio from inputs only
Other I/O	1 x USB 2.0 (Mini B) for updates and configuration
Input Formats	SMPTE formats up to 1920 x 1080 at 60 fps
Output Formats	SMPTE formats up to 1920 x 1080 at 60 fps
Reclocking	Yes (SDI loop outputs 1 and 2)
Standards Conversion	Yes
Scaling	Yes
Power	1 x Metal locking DC power input (5V to 32V DC; AC power adapter included)

Another Great HDMI/SDI Scaler Converter

Datavideo DAC-70

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This old-timer celebrates its 10^th birthday this year! 🎉

While it does sort of look like it came out of the trunk of your uncle's '92 Camaro Z28, it doesn't really matter because it still brings the goods (just like that old Z28).

Scale any input up to 1920 x 1080 at 60 fps including 8 of the most popular VGA formats, adjust image settings like brightness, contrast, hue, and saturation with the built-in proc amp, embed two channels of analog audio, and configure settings with DIP switches or over a USB connection.

After seeing a lot of these in action, in all kinds of production environments over the last decade, I can't think of one that I've seen fail. They're workhorses, through and through.

Works Best For

Converting VGA or HDMI computer signals to SDI
Embedding analog RCA audio into HDMI or SDI

Pros

Reliability
Adjust important settings using onboard DIP switches
Proc amp adjustment of brightness, contrast, hue, and saturation.
Locking metal power input

Cons

DAC Center software is Windows only
Port and switch layout is a bit crowded
While the power switch is handy for some situations, it can also be a frustration for others

Specifications
Conversions	VGA to SDI VGA to HDMI HDMI to SDI HDMI to HDMI SDI to HDMI Analog audio embedding
Video I/O	1 x VGA input (DE-15) 1 x HDMI input (Type A - Full Size) 1 x 3G-SDI input 2 x 3G-SDI outputs 1 x 3G-SDI loop output
Audio I/O	2 x RCA stereo analog audio inputs 8 channels of embedded audio from SDI and HDMI inputs
Other I/O	1 x USB 2.0 (Mini B; control and firmware upgrades)
Input Formats	SMPTE formats up to 1920 x 1080 at 60 fps 640 x 480 at 60 Hz (VGA input only) 800 x 600 at 60 Hz (VGA input only) 1024 x 768 at 60 Hz (VGA input only) 1280 x 1024 at 60 Hz (VGA input only) 1600 x 1200 at 60 Hz (VGA input only) 1920 x 1080 at 60 Hz (all inputs)
Output Formats	SMPTE formats up to 1920 x 1080 at 60 fps
Reclocking	Yes
Standards Conversion	Yes
Scaling	Yes
Power	1 x Metal locking DC power input (12V DC - 7.2 watts; AC power adapter included)

SMPTE ST 2110 Converters

SMPTE's ST 2110 is a growing suite of standards for the transport, synchronization, and structure of video, audio, and ancillary data over managed IP networks.

Because ST 2110 is defined and published by SMPTE, the leading authority for broadcast standards, it has become the de facto standard for AV over IP in broadcast production.

While the ST 2110 specifications have been around for more than 6 years now, it has only just begun to take off in adoption and integration. So while there might be few options here right now (and most being quite expensive), expect this category to grow rapidly and prices to come down as more products are released.

The future of broadcast and IP is finally looking interesting!

Best Budget SMPTE ST 2110 Converter

Blackmagic 2110 IP Converter 3x3G

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While this converter is not available yet, I can pretty much guarantee it's going to sell like hotcakes.

Why?

Let me count the ways...

3 channels of uncompressed bidirectional 3G-SDI conversion
Reference output tied to ST 2110 PTP clock
Supports SMPTE-2110-21 traffic shaping/timing
Supports SMPTE-2110-30 audio
Supports SMPTE-2110-40 ancillary data
Supports multicast
Supports NMOS interface specifications
Redundant power from AC and PoE+

Typically, products with this capability and price point come along well after a technology or standard has matured. So the fact this is already here at this price is simply bonkers!

Pros

Price
Simultaneous bidirectional capability
3 channels of conversion in one unit
Redundant power options

Cons

Too new to know reliability
ST 2110 and uncompressed IP workflows are new and have little support and market adoption

Specifications
Conversions	SDI to ST 2110 ST 2110 to SDI
Video I/O	3 x 3G-SDI inputs 3 x 3G-SDI outputs 3 x 3G-SDI loop outputs 1 x 10Gbps RJ45 Ethernet port (IP input/output)
Audio I/O	Up to 16 channels of embedded audio from inputs
Other I/O	1 x BNC reference output 1 x 10Gbps RJ45 Ethernet port with PoE+ (configuration and power) 1 x USB-C port (updates, configuration, and control)
Input Formats	Uncompressed SMPTE formats up to 1920 x 1080 at 60 fps
Output Formats	Uncompressed SMPTE formats up to 1920 x 1080 at 60 fps
Reclocking	No
Standards Conversion	No
Scaling	No
Power	1 x IEC C14 socket for internal AC power supply (100V to 240V - 50/60 Hz) 1 x RJ45 Ethernet port with PoE+

NDI Converters

NDI is a royalty-free protocol released in 2015 that enables devices to send and receive compressed video, audio, and ancillary data over a LAN. It gained in popularity as one of the first reliable AV over IP solutions because of its royalty-free licensing model and compressed format, allowing it to run over simpler and low-cost networking infrastructure.

IMPORTANT: Because of inherent and often unpredictable latency, I only recommend using NDI as a deliverable solution to non-essential destinations like digital signage and classrooms. I do not recommend using NDI for any live multi-cam system where low latency or matching sources is required. This applies especially to situations that require IMAG.

Best Overall NDI/SDI Converter

Kiloview N50

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Kiloview has been creating IP encoders and decoders for over a decade, but only recently has gone all out with their NDI product line. And these new N series encoders/decoders are quite exceptional!

This little box is flat out the most powerful encoder/decoder available right now, and it still manages to beat all competition on price. 🫨

It offers 12G-SDI input and output, full-bandwidth NDI in 4:2:2 10-bit and 8-bit formats, NDI|HX 2 and 3 in H.264 and HEVC formats, a built-in LCD screen and scroll wheel for easy configuration, a USB port that supports PTZ control and Kiloview's intercom (KIS), 2 Ethernet ports for network redundancy, recording directly to microSD cards, and DC or PoE power options.

I recommend Kiloview be your first look when implementing NDI. They are one of the few that fully get it.

Pros

12G-SDI capability
Full 10-bit 4:2:2 NDI capability
Ethernet redundancy
Full features available immediately

Cons

Encoding and decoding not available simultaneously
DC power input doesn't lock

Specifications
Conversions	NDI to SDI SDI to NDI
Video I/O	1 x 12G-SDI input 1 x 12G-SDI output 2 x 1Gbps RJ45 Ethernet ports (NDI input/output)
Audio I/O	1 x 3.5mm TRS stereo analog audio input 1 x 3.5mm TRS stereo analog audio output 2 x 1Gbps RJ45 Ethernet ports (NDI input/output) Embedded audio from inputs
Other I/O	1 x 1Gbps RJ45 Ethernet port with PoE (configuration and power) 1 x 1Gbps RJ45 Ethernet port (configuration) 1 x USB-C port (configuration, updates, Kiloview Intercom System, and PTZ control) 1 x USB port (Type A - Full Size; configuration, updates, Kiloview Intercom System, and PTZ control) 1 x TF (microSD) memory card slot (recording)
Input Formats	SMPTE formats up to 3840 x 2160 at 60 fps
Output Formats	SMPTE formats up to 3840 x 2160 at 60 fps
Reclocking	No
Standards Conversion	No
Scaling	No
Power	1 x DC power input (12V - 16 watts max; AC power adapter included) 1 x RJ45 Ethernet port with PoE

Best Value NDI/SDI Converter

NewTek Spark Plus

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It would only make sense that products made by NewTek, the developers of NDI, would show up near the top.

But there is nothing really glamorous here. It's just a solid full-bandwidth NDI encoder/decoder directly from the source.

It offers simultaneous SDI to NDI and NDI to SDI, full-bandwidth NDI, unicast and multicast modes, up to 16 channels of embedded audio, up to 8 channels of audio de-embedding, and DC or PoE power options.

Pros

12G-SDI capability
Simultaneous bidirectional conversion
Support for 16 channels of embedded audio

Cons

No NDI|HX support
No intercom support
Only 4:2:0 color in UHD formats

Available Models

Specifications
Conversions	NDI to SDI SDI to NDI
Video I/O	1 x 12G-SDI input 1 x 12G-SDI output 1 x 1Gbps RJ45 Ethernet port (NDI input/output)
Audio I/O	1 x 3.5mm TRS stereo analog audio input/output 1 x 1Gbps RJ45 Ethernet port (NDI input/output) Up to 16 channels of embedded audio from inputs
Other I/O	1 x 1Gbps RJ45 Ethernet port with PoE (configuration and power)
Input Formats	SMPTE formats up to 3840 x 2160 at 59.94 fps
Output Formats	SMPTE formats up to 3840 x 2160 at 59.94 fps
Reclocking	No
Standards Conversion	No
Scaling	No
Power	1 x USB-C power input (5V to 18V; AC power adapter included) 1 x RJ45 Ethernet port with PoE

Best Budget NDI/SDI Converter

Kiloview N5

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Another great Kiloview N series encoder/decoder with 3G-SDI and NDI full-bandwidth support.

This, in my opinion, is exactly what an entry level NDI converter should be.

It supports full-bandwidth NDI in 4:2:2 8-bit, NDI|HX 2 and 3, up to 4 channels of embedded audio, embedding or de-embedding of two channels of analog audio, seamless switching output of up to nine NDI sources, DC or PoE power options, includes a front panel LCD screen and buttons for easy configuration, a bi-color tally indicator, and a USB port that supports PTZ control as well as Kiloview's intercom (KIS).

It checks all the boxes while keeping the cost as low as possible.

Pros

Price
Encode or decode from the same unit
Seamless SDI switching between NDI sources

Cons

Encoding and decoding not available simultaneously

Specifications
Conversions	NDI to SDI SDI to NDI
Video I/O	1 x 3G-SDI input 1 x 3G-SDI output 1 x 1Gbps RJ45 Ethernet port (NDI input/output)
Audio I/O	1 x 3.5mm TRS stereo analog audio input/output 1 x 1Gbps RJ45 Ethernet port (NDI input/output) Up to 4 channels of embedded audio from inputs
Other I/O	1 x 1Gbps RJ45 Ethernet port with PoE (configuration and power)
Input Formats	SMPTE formats up to 1920 x 1080 at 60 fps
Output Formats	SMPTE formats up to 1920 x 1080 at 60 fps
Reclocking	No
Standards Conversion	No
Scaling	No
Power	1 x DC power input (12V - 6 watts; AC power adapter included) 1 x RJ45 Ethernet port with PoE

VGA Converters

Converters in this category will convert VGA to SDI or SDI to VGA.

They will also interface with analog DVI components with a proper DVI male to VGA female adapter or DVI female to VGA male adapter.

IMPORTANT: I always recommend using a scaler converter when converting VGA to SDI.

Best Overall VGA to SDI Scaler Converter

Datavideo DAC-70

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This old-timer celebrates its 10^th birthday this year! 🎉

While it does sort of look like it came out of the trunk of your uncle's '92 Camaro Z28, it doesn't really matter because it still brings the goods (just like that old Z28).

After seeing a lot of these in action, in all kinds of production environments over the last decade, I can't think of one that I've seen fail. They're workhorses, through and through.

And it is just about the best bang for the buck around when it comes to a proper, and decently scaled, VGA to SDI conversion.

Works Best For

Converting VGA or HDMI computer signals to SDI
Embedding analog RCA audio into HDMI or SDI

Pros

Reliability
Adjust important settings using onboard DIP switches
Proc amp adjustment of brightness, contrast, hue, and saturation.
Locking metal power input

Cons

DAC Center software is Windows only
Port and switch layout is a bit crowded
While the power switch is handy for some situations, it can also be a frustration for others

Specifications
Conversions	VGA to SDI VGA to HDMI HDMI to SDI HDMI to HDMI SDI to HDMI Analog audio embedding
Video I/O	1 x VGA input (DE-15) 1 x HDMI input (Type A - Full Size) 1 x 3G-SDI input 2 x 3G-SDI outputs 1 x 3G-SDI loop output
Audio I/O	2 x RCA stereo analog audio inputs 8 channels of embedded audio from SDI and HDMI inputs
Other I/O	1 x USB 2.0 (Mini B; control and firmware upgrades)
Input Formats	SMPTE formats up to 1920 x 1080 at 60 fps 640 x 480 at 60 Hz (VGA input only) 800 x 600 at 60 Hz (VGA input only) 1024 x 768 at 60 Hz (VGA input only) 1280 x 1024 at 60 Hz (VGA input only) 1600 x 1200 at 60 Hz (VGA input only) 1920 x 1080 at 60 Hz (all inputs)
Output Formats	SMPTE formats up to 1920 x 1080 at 60 fps
Reclocking	Yes
Standards Conversion	Yes
Scaling	Yes
Power	1 x Metal locking DC power input (12V DC - 7.2 watts; AC power adapter included)

Best Budget VGA to SDI Scaler Converter

Lumantek ez-HS+

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This is an excellent bang for the buck that will work for a majority of VGA to SDI conversions.

It offers easy DIP switch adjustments, 16 different SMPTE output formats, a 3.5mm stereo audio input for embedding 2 channels of analog audio, and letterboxing and pillarboxing options.

And, after being around a few years now, these boxes have proven to be quite reliable and durable.

All in all, this is an excellent budget-friendly VGA scaler.

Works Best For

Standard VGA to SDI conversions

Pros

Price
Easy to use and understand DIP switch settings
Analog stereo audio embedding

Cons

Lack of some common VGA formats
DC power input doesn't lock

Specifications
Conversions	VGA to SDI HDMI to SDI Analog audio embedding
Video I/O	1 x HDMI input (Type A - Full Size) 2 x 3G-SDI outputs
Audio I/O	1 x 3.5mm stereo analog audio input 2 channels of embedded audio from HDMI input
Other I/O	N/A
Input Formats	SMPTE formats up to 1920 x 1080 at 60 fps 640x480 at 60 Hz 800x600 at 60 Hz 1024x768 at 60 Hz 1280x1024 at 60 Hz 1600x1200 at 60 Hz 1920x1080 at 60 Hz
Output Formats	SMPTE formats up to 1920 x 1080 at 60 fps
Reclocking	No
Standards Conversion	Yes
Scaling	Yes
Power	1 x DC power input (5V to 18V - 3 watts max; AC power adapter included)

Best Premium VGA to SDI Scaler Converter

Datavideo DAC-45

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I love that this unit offers 4K UHD capability.

But...

I do not love that this unit only offers 4K UHD capability through HDMI.

However, because VGA cannot get anywhere near 4K or UHD resolutions, there aren't many options when you need to interface VGA with formats greater than 1080p.

For the few times you do need that done, though, this converter can make it happen.

I also appreciate the reference input, giving you the ability to incorporate VGA into genlocked systems.

Works Best For

Interfacing VGA sources with 4K UHD HDMI destinations
Sending VGA sources into genlocked SDI systems

Pros

Reliability
4K UHD capability
Adjust important settings using onboard DIP switches
Proc amp adjustment of brightness, contrast, hue, and saturation.
Locking metal power input

Cons

DAC Center software is Windows only
Formats greater than 1080p only possible through HDMI input and output

Specifications
Conversions	VGA to SDI VGA to HDMI HDMI to SDI HDMI to HDMI SDI to HDMI Analog audio embedding
Video I/O	1 x VGA input (DE-15) 1 x HDMI input (Type A - Full Size) 1 x 3G-SDI input 1 x HDMI output (Type A - Full Size) 1 x 3G-SDI output
Audio I/O	2 x RCA stereo analog audio inputs 8 channels of embedded audio from SDI and HDMI inputs
Other I/O	1 x BNC reference input 1 x USB 2.0 (Mini B; control and firmware upgrades)
Input Formats	SMPTE formats up to 3840 x 2160 at 60 fps (HDMI input only) SMPTE formats up to 1920 x 1080 at 60 fps (SDI input only) 800 x 600 at 60 Hz (VGA input only) 1024 x 768 at 60 Hz (VGA input only) 1280 x 1024 at 60 Hz (VGA input only) 1366 x 768 at 60 Hz (VGA input only) 1400 x 1050 at 60 Hz (VGA input only) 1600 x 1200 at 60 Hz (VGA input only) 1280 x 720 at 60 Hz (all inputs) 1920 x 1080 at 60 Hz (all inputs)
Output Formats	SMPTE formats up to 3840 x 2160 at 60 fps (HDMI output) SMPTE formats up to 1920 x 1080 at 60 fps (SDI output)
Reclocking	Yes
Standards Conversion	Yes
Scaling	Yes
Power	1 x Metal locking DC power input (12V DC - 9.4 watts; AC power adapter included)

Best Overall SDI to VGA Converter

Datavideo DAC-60

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For the rare situations where you need to reliably convert SDI to VGA, this is a low-key converter that just works.

Works Best For

Standard SDI to VGA conversions

Pros

Reliability
Easy output format selection using built-in DIP switches
Locking metal power input

Cons

DAC Center software is Windows only
Some settings are only accessible through USB connection

Specifications
Conversions	SDI to VGA
Video I/O	1 x 3G-SDI input 1 x VGA output (DE-15) 1 x 3G-SDI loop output
Audio I/O	N/A (VGA does not support audio)
Other I/O	1 x USB 2.0 (Mini B; firmware upgrades)
Input Formats	SMPTE formats up to 1920 x 1080 at 60 fps
Output Formats	800 x 600 at 60 Hz 1024 x 768 at 60 Hz 1280 x 800 at 60 Hz 1280 x 1024 at 60 Hz 1366 x 768 at 60 Hz 1400 x 1050 at 60 Hz 1600 x 1200 at 60 Hz 1920 x 1080 at 60 Hz 1920 x 1200 at 60 Hz
Reclocking	Yes
Standards Conversion	Yes (only to supported VGA output formats without cropping, letterboxing, or pillarboxing)
Scaling	Yes (only to supported VGA output formats without cropping, letterboxing, or pillarboxing)
Power	1 x Metal locking DC power input (12V DC - 3.6 watts; AC power adapter included)

Delay Converters

Converters in this category will delay all, or part, of the input signal before passing it on to output(s).

IMPORTANT: Approach this category with caution. I do not recommend delaying live video in a vast majority of situations. If you are having problems with audio falling behind video, then I suggest troubleshooting your signal flow and system before adding delay as a band-aid to a bigger foundational issue. This is especially true when using software DAWs for mixing live audio.

Best Overall SDI Delay

Theatrixx 3G-SDI Line Delay

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Theatrixx makes some of the most robust, over-engineered, and impeccably crafted converters I've ever seen. And those are all good things.

This line delay offers up to 160 frames of delay adjustable in 1ms increments, four 3G-SDI delayed outputs, and one 3G-SDI non-delayed loop output.

This is undeniably the best stand-alone SDI delay out there.

Pros

Integrated power supply
powerCON TRUE1 ports
Loop-thru power output
Multiple mounting options and magnetic stacking system

Cons

Delay affects entire SDI payload (no way to delay only audio or video)
Premium price
Size and weight might be a downside for some situations

Specifications
Conversions	SDI to SDI
Video I/O	1 x 3G-SDI input 4 x 3G-SDI outputs (delayed) 1 x 3G-SDI loop output (no delay)
Audio I/O	Embedded SDI audio
Other I/O	N/A
Input Formats	SMPTE formats up to 1920 x 1080 at 60 fps
Output Formats	Same format as input
Reclocking	Yes
Standards Conversion	No
Scaling	No
Power	1 x Locking powerCON TRUE1 input (standard; cable included) 1 x Locking powerCON TRUE1 loop-thru output (standard)

Best Value SDI Delay

Roland VC-1-DL

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This is just about the cheapest way to reliably delay all, or part, of input sources.

Just be aware that it can only do a maximum delay of 4.5 frames (9 fields), which isn't much.

However, it offers stero audio embedding as well as independent control for video and audio delay, making it useful for re-syncing separate audio and video feeds.

If you only need up 4.5 frames of delay, this will definitely get the job done and probably save you money compared to alternatives.

Specifications
Conversions	HDMI to SDI SDI to HDMI Audio embedding Audio de-embedding
Video I/O	1 x 3G-SDI input 1 x HDMI input (Type A - Full Size) 1 x 3G-SDI output 1 x HDMI output (Type A - Full Size)
Audio I/O	2 x TRS analog/AES3 audio inputs 2 x TRS analog/AES3 audio outputs
Other I/O	1 x BNC reference input 1 x USB (Type B - Full Size)
Input Formats	SMPTE formats up to 1920 x 1080 at 60 fps
Output Formats	Same format as inputs
Reclocking	Yes
Standards Conversion	No
Scaling	No
Power	1 x 9V DC input (AC power adapter included)

HDCP Converters

Converters in this category convert HDMI to SDI and provide reliable ways to pass HDCP-encrypted content.

HDCP is a digital copy protection found in HDMI devices that prevents the copying of digital video and audio content as it passes through the signal chain.

One common complaint with HDMI to SDI conversion is the inability to play HDCP-encrypted content even when all the proper licensing and permissions are acquired.

But, contrary to popular belief, there are ways to send that content over SDI without risky hacks or workarounds!

Best Overall HDMI to SDI Converter for HDCP

Apantac Crescent

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This converter requires a simple one-time installation of a small jumper (included in the box) in the converter.

After successful installation of the jumper, HDCP-encrypted content will be allowed to pass to SDI outputs.

Also available as an HDMI to 3G-SDI openGear Converter.

Pros

Built-in interlacing (1080p to 1080i)
Built-in test patterns
Passes 4 channels of HDMI audio
Stereo analog audio output
Locking power port

Cons

Jumper installation requires opening the unit

Specifications
Conversions	HDMI to SDI
Video I/O	1 x HDMI input (Type A - Full Size) 2 x 3G-SDI outputs 1 x HDMI loop output (Type A - Full Size)
Audio I/O	Embedded audio from inputs
Input Formats	SMPTE formats up to 1920 x 1080 at 60 fps
Output Formats	Same format as input
Reclocking	No
Standards Conversion	No
Scaling	No
Power	1 x DC 5V 3.2A (AC power adapter included)

Another Great HDMI to SDI Converter for HDCP

Ensemble Designs BrightEye 83-H

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This converter requires signing a waiver and one-time license key application. But, there is no need to make physical changes to the unit.

After the license key is applied, HDCP-encrypted content will be allowed to pass to SDI outputs.

Pros

Locking power port

Cons

License key process is not as quick as a jumper installation
Only 3G-SDI Level A supported

Specifications
Conversions	HDMI to SDI
Video I/O	1 x HDMI 1.3 input (Type A - Full Size) 2 x 3G-SDI outputs (3G-SDI Level A only)
Audio I/O	Embedded audio from inputs
Input Formats	SMPTE formats up to 1920 x 1080 at 60 fps
Output Formats	Same format as input
Reclocking	No
Standards Conversion	No
Scaling	No
Power	1 x DC 12V (AC power adapter included)

Why You Can Trust Me

I started my career over 23 years ago as a freelance camera operator for broadcast television networks including ABC, FOX Sports, and Speed Channel. I quickly moved to other roles including jib/crane operator, engineer, technical director, and director. Since then I have designed, built, and maintained hundreds of video systems ranging from small flypacks to large broadcast studios. Additionally, I have spent the last decade running this website and consulting with organizations to help them find the right gear and maximize their results. Learn more about Joel