BZBGEAR BG-4KBHS 12G/6G/3G/HD-SDI & HDMI 2.0 Bi-Directional Converter with Audio Embedding and Extraction

Description

The BG-4KBHS is a professional-grade 12G/6G/3G/HD-SDI and HDMI 2.0 bi-directional converter featuring integrated audio embedding and extraction. Designed for uncompromising signal quality and reliability, this converter enables seamless real-time conversion between HDMI and SDI formats without latency or signal loss. Supporting full digital conversion, it maintains uncompressed, lossless video and audio for pristine broadcast performance.

With support for up to 8 audio channels, including 7.1 and 5.1 surround sound, and a high-quality analog stereo embedder and extractor, the BG-4KBHS bridges professional SDI systems with consumer HDMI devices in a single, versatile solution. Its low-jitter SDI output, automatic signal detection, and broad video format support up to 4K@60Hz make it a reliable tool for broadcast studios, post-production, and AV integration environments demanding flexible and high-fidelity signal management.

Features in Depth

The BG-4KBHS delivers real-time, bi-directional conversion between HDMI 2.0 and 12G/6G/3G/HD-SDI formats with zero latency, ensuring broadcast-quality performance across professional and consumer workflows. It supports uncompressed 10-bit 4:2:2 video for exceptional image fidelity and automatically detects SDI signal formats for seamless switching between 12G, 6G, 3G, and HD-SDI. With support for a wide range of HD and UHD resolutions up to 4K@60Hz, the converter ensures full compatibility with modern production and display systems, maintaining lossless video and audio transmission throughout the process.

In addition to high-quality video conversion, the BG-4KBHS integrates audio embedding and extraction, supporting up to 8 digital channels including 7.1 and 5.1 surround sound, along with 2-channel analog stereo I/O. This enables flexible routing of both embedded and external audio without additional hardware. Its low-jitter SDI output provides exceptional signal stability, while advanced re-clocking and equalization technologies allow cable runs up to 300m (HD-SDI) and 70m (12G-SDI) without degradation, making it ideal for broadcast, live production, and post-production environments that demand reliability and precision.

Built on a 6-layer impedance-controlled PCB and enclosed in a durable metal chassis, the BG-4KBHS combines robust design with professional connectivity options, including HDMI Type-A, 75Ω BNC, and 3.5mm audio jacks. The unit supports both internal and external synchronization for flexible integration into time-critical workflows and operates within a wide environmental range for field and studio use. Compact, versatile, and engineered for flawless performance, the BG-4KBHS is a complete solution for bridging SDI and HDMI systems while preserving the full integrity of video and audio signals.

Features

Supports HD & UHD Formats – 720p@50/59.94/60Hz, 1080i@50/59.94/60Hz, 1080p@23.97/24/25/29.97/30/50/59.94/60Hz, 4K2K@23.98/24/25/29.97/30/50/59.94/60Hz
High Bit Rate Support – Handles SDI bit rates of 270 Mbps up to 11.88 Gbps, including fractional rates for broadcast compatibility
Audio Channel Support – Supports up to 8 audio channels, including 7.1 and 5.1 surround sound
Analog Stereo Embedder & Extractor – Provides high-quality analog audio embedding and extraction for flexible audio routing
Real-Time Bi-Directional Conversion – Converts HDMI to SDI and SDI to HDMI without latency or quality loss
Auto SDI Detection – Automatically detects and switches between 12G, 6G, 3G, and HD-SDI signals
Video & Audio Integrity: Maintains uncompressed, lossless digital video and audio throughout the conversion process
Multi-Format Compatibility: Compatible with professional SDI equipment and consumer HDMI devices for versatile workflow integration
Compact & Rack-Mountable Design: Optimized for studio and field applications requiring space-efficient hardware
HDMI Support: Fully compatible with HDMI 2.0 and lower versions for flexible source integration
Low-Jitter SDI Output: Ensures stable and reliable SDI signal transmission for professional video workflows

Product Diagrams

View Diagrams

Specifications

Technical
SDI Standards	12G / 6G / 3G / HD-SDI
HDMI Standards	HDMI 2.0
Auto SDI Detection	12G / 6G / 3G / HD-SDI (Auto)
Video Bandwidth	SDI: 11.88 Gbps, 11.88/1.001 Gbps HDMI: Up to 18 Gbps
Video Support	12G-SDI: 4K2K @50/59.94/60Hz 6G-SDI: 4K2K @23.98/24, 25, 29.97, 30Hz 3G-SDI: 1080p @50/59.94/60Hz HD-SDI: 720p @50/59.94/60Hz, 1080i @50/59.94/60Hz, 1080p @23.98/24/25/29.97/30Hz HDMI: Up to 4K2K @60Hz
Input Signal	1x SDI, 1x HDMI, 1x Audio
Output Signal	2x HDMI, 1x SDI, 1x Audio
Output Impedance (SDI)	75Ω
Synchronization Mode	Internal or External
Eye Pattern Characteristics	12G-SDI: Timing jitter: 0.29 UI, Alignment jitter: 0.13 UI 6G-SDI: Timing jitter: 0.18 UI, Alignment jitter: 0.06 UI 3G-SDI: Timing jitter: 0.09 UI, Alignment jitter: 0.03 UI
Cable Equalization	12G-SDI: up to 70m 6G-SDI: up to 100m 3G-SDI: up to 190m HD-SDI: up to 300m
Audio Support	Analog Audio: 2-channel HDMI: Surround Sound (up to 7.1ch)
PCB Stack-up	6-layer board (Impedance control: differential 100Ω; single 50Ω)
Connections
Input	1x BNC (SDI) 1x HDMI 1x Audio Jack
Output	2x HDMI 1x BNC (SDI) 1x Audio Jack
BNC Connector	75Ω inter-locked socket
HDMI Connector	Type A (19-pin female)
Mechanical
Housing	Metal enclosure
Power Supply	+5V DC
Operating Temperature	32 ∼ 104°F / 0 ∼ 40°C
Storage Temperature	-4 ∼ 140°F / -20 ∼ 60°C
Relative Humidity	20 ∼ 90% RH (no condensation)

Free Ground Shipping

We offer free ground shipping on every purchase of $300 and more for US and US territory. Please choose "Free Ground Shipping (UPS/USPS)" option at checkout.

UPS Ground

UPS provides up-to-date tracking information. Ground service takes anywhere from 2-7 working days for delivery depending on destinations. UPS Ground does not deliver on Saturdays, Sundays or Holidays.

USPS Priority Mail/USPS Express Mail

For all shipments shipped via USPS, we offer 'DELIVERY CONFIRMATION' number with each package. Difference between tracking number provided by UPS vs USPS Delivery Confirmation number is: Delivery Confirmation status is updated when the delivery has been made or when the package has made it through major USPS stations.

Air Shipment

Air shipments, Overnight, 2nd day and 3 day select methods offer guaranteed delivery time for your shipment. If you are in hurry or in need for the items on schedule, select one of these methods. Up-to-date tracking information is provided with each Air Shipment. AVProSupply has the right to choose between Air shipments to meet or reduce delivery time. For guaranteed delivery of multiple items with expedited shipping, please contact our customer service representative for personalized assistance to get your items delivered to you when you need them.

International Customers

We offer shipping via USPS/UPS for our international customers. You can find different shipping options during checkout.

Most items ordered from AVProSupply will be shipped out from our California Warehouse. Will-Calls are only allowed with Appointment Only - Please call Customer Service to set one up between the hours of 9am to 6pm PST.

PAYMENTS ACCEPTED:

Major Credit Cards: Visa, MasterCard, Discover and American Express.
Paypal: You can select an option of Paying with Paypal in our shopping cart.
Money orders: and personal checks or company checks (may take up to 10 days to clear).
Wire Transfer: ( Bank Transfer ) Only for the amount over $500. Contact us for the bank details.
Phone Orders: To place a phone order please call 1.888.902.3309 or 1.916.246.6264 and one of our Customer Service Representatives will take your order (8:00am - 6.00pm PST).
Purchase order: Fax purchase orders to 1.916.672.2557

We Offer A 30-Day Money Back Guarantee:

Our main goal is to ensure your complete satisfaction with our service and products. If, for any reason, you are not 100% satisfied with your purchase, you can return it within 30 days of the purchase date for a full refund. Our 30-day money back guarantee applies to all of the products we sell, except for: TVs and monitors 20" and larger, Special Order merchandise, or any item indicated as non-returnable. Shipping is not refundable. Prior to returning your purchase, a Return Merchandise Authorization (RMA) number will be provided to you.

Refunds:

Refunds on returned items will be issued in the same payment form as received from the customer at the time of purchase. Once we receive the product and it passes inspection, we will credit your account. Please allow 3 - 6 business days for a credit to appear on your account.

Exchanges:

If the item was sent back to us for an exchange, please allow 3 - 5 business days for the replacement to be processed.

No Returns/Exchanges on the following:

TVs and monitors 20" and larger
Special Order merchandise
Any item indicated on the website as non-returnable

For more information see our official Return Policy