4K UHD 12G-SDI to HDMI Converter with Audio Extraction (Supports HD & UHD 12G/6G/3G/HD-SDI)

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The BZBGEAR BG-4KSH is a 12G/6G/3G/HD-SDI to HDMI 2.0 converter with audio extraction. The SDI signal is digitally converted into HDMI, guaranteeing lossless conversion for both audio and video. Featuring up to 8 channels of audio, the BG-4KSH is compatible with 7.1 or 5.1 surround sound systems. The 3.5mm analog stereo output, SDI input, SDI loop-out, and HDMI output provides users convenient flexibility. With these robust features, the BG-4KSH can take SDI signals from professional or commercial AV equipment and effortlessly convert it to HDMI without compression for use of popular consumer-grade video interfaces.


  • Crystal Clear Images
    Stunning image quality up to 4K@60Hz
  • HDMI Output
    Convert SDI to HDMI the most popular video interface in the world
  • SDI Loop-out
    Loop out to view content locally at device
  • Audio De-embedding
    De-embed audio using a 3.5mm Stereo Mini input
  • Status LEDs
    See signal and power status at a glance with built in status lights
  • Durable Metal Enclosure
    Designed for years of reliable use
  • 7.1 or 5.1 channel surround
  • Convert signal from professional/commercial grade AV equipment to a more common interface
  • Digital conversion of signal ensures lossless transformation for audio and video


Convert Your 12G SDI Signals into 4K HDMI Signals Effortlessly with the BG-4KSH
Convert Your 12G SDI Signals into 4K HDMI Signals Effortlessly with the BG-4KSH

Tech Specifications

HDMI Compliance 2.0
SDI Formats SMPTE 2082; 11.88 Gbps / 12G-SDI: 2160p at 50/59.95/60 Hz
SMPTE 2081; 5.94 Gbps / 6G-SDI: 2160p at 25/29.97/30 Hz
SMPTE 424M-2.97 Gbps / 3G-SDI: 1080p at 50/59.94/60 Hz (4:2:2)
SMPTE 274M-1.485 Gbps / HD-SDI: 1080p at 23.98/24/25/29.97/30 Hz, 1080i at 50/59.94/60 Hz
SMPTE 292M-1.485 Gbps / HD-SDI: 1080i at 30 Hz, 720p at 60 Hz
SMPTE 296M-1.485 Gbps / HD-SDI: 720p at 23.98/24/25/29.97/30/50/59.94/60 Hz
HDMI Formats 4K UHD Video Standards / 2160p at 23.98/24/25/29.97/30/50/59.94/60 Hz
UHD Video Standards / 1080p at 50/59.94/60 Hz (4:2:2)
HD Video Standards / 720p at 50/59.94/60 Hz, 1080i at 50/59.94/60 Hz, 1080p at 23.98/24/25/29.97/30 Hz
SDI Bitrate 270 Mbps, 1.485 Gbps, 2.97 Gbps, 5.94 Gbps, 11.88 Gbps
Video Sampling 4:2:2
Audio Sampling 48 kHz & 24 bit
Auto Switching Auto switching between SD / HD / 3G / 6G / 12G-SDI
Cable Reach 12G-SDI up to 70m (233ft)
6G-SDI up to 100m (330ft)
3G-SDI up to 190m (627ft)
HD-SDI up to 250m (825ft)
Eye-patten Measurements Amplitude: within 800mV
Raise & Fall time: 45ps
Alignment jitter: <0.3 (100kHz to 1188MHz)
ESD Protection 8 KV - Contact Discharge
15 KV - Air Discharge
Housing Design Metal
Casing Style Wall Mountable
Power Connection Micro-USB Port
Power Supply 5V DC, 1A
Power Consumption 2.5 Watts (Max.)
Operating Humidity 20-90% RH (no condensation)
Operation temperature 32~104°F / 0~40°C
Product Weight 0.39 lb (175g)
Package Weight 0.86 lb (390g)
Certifications CE, FCC, RoHS


  • 1x BG-4KSH
  • 1x 5V power adapter
  • 1x User Manual


  1. SDI IN: 12G/6G/3G/HD-SDI Input.
  2. Signal LED: Illuminates when a SDI signal is detected.
  3. SDI OUT: 12G/6G/3G/HD-SDI loop-out.
  4. Power LED: Illuminates when power is connected.
  5. HDMI OUT: Connect to an HDMI display using an HDMI male-to-male cable.
  6. Stereo Audio Output: Extract audio from the SDI source using 3.5mm Stereo mini.
  7. Micro USB Port: 5V DC power supply.