4K UHD HDMI to 12G-SDI Converter with HDMI Loop-out and Audio Embedder

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The BG-4KHS HDMI to SDI converter seamlessly converts an HDMI 2.0 signal to 12G/6G/3G/HD/SD-SDI in real time. The conversion between HDMI 2.0 and SDI is purely digital. When converting HDMI 2.0 to SDI, there is no loss or weakness of signal quality. Additionally, with up to 8 channels of audio support, 7.1 channel audio and 5.1 channel audio becomes available. With the use of BG-4KHS, users can expand their access to professional SDI compatible equipment!

The BG-4KHS provides two low jitter SDI outputs and one HDMI loop-out. To provide a more flexible application, the BG-4KHS is also equipped with a high quality analog stereo embedder. Analog audio supports 2ch and HDMI surround sound supports up to 7.1ch. Furthermore, this HDMI to SDI converter supports resolutions up to 4K@60Hz. The lowest resolution BG-4KHS supports is 720p@50Hz.

For additional application support, the BG-4KHS HDMI to SDI converter is wall mountable. One mounting rack set is included with the purchase of this device. The package also includes a 5V power adapter to ensure users have everything they need right out of the box.


  • Crystal Clear Images
    Stunning image quality up to 4K@60Hz
  • HDMI Loop-out
    Loop out to view content locally at device
  • Dual SDI Outputs
    Split an HDMI signal from 1 source to 2 SDI outputs for long range signal transmission
  • Audio Embedding
    Embed audio from 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
  • 4K2K@24/25/30Hz RGB or YCbCr 4:4:4 deep color signal
  • Digital conversion of signal ensures lossless transformation for audio and video


Convert Your HDMI Signals Into Professional Grade 12G SDI | BG-4KHS
Convert Your HDMI Signals Into Professional Grade 12G SDI | BG-4KHS

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 296M; 1.485 Gbps / HD-SDI: 720p at 23.98/24/25/29.97/30/50/59.94/60 Hz
SMPTE 292M; 1.485 Gbps / HD-SDI: 1080i at 30 Hz, 720p at 60 Hz
SMPTE 259M; 270 Mbps/SD-SDI: NTSC 525 at 59.94 Hz, PAL 625 at 50 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
SD Video Standards / NTSC at 59.94 Hz, PAL at 50 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 60m (200ft)
6G-SDI up to 75m (250ft)
3G-SDI up to 90m (300ft)
HD-SDI up to 150m (500ft)
SD-SDI up to 300m (1000ft)
Eye-patten Measurements Amplitude: within 800mV
Raise & Fall time: 45ps
Timing jitter: 8
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 Interlocking Barrel
Power Supply 12V DC, 2A
Power Consumption 10 Watts (Max.)
Operating Humidity 20-90% RH (no condensation)
Operation temperature 32~104°F / 0~40°C
Product Weight 1.07 lb (485g)
Package Weight 2.0 lb (923g)
Certifications CE, FCC, RoHS


  • 1x BG-4KHS
  • 1x 5V power adapter
  • 1x Surface mount brackets set
  • 1x User Manual


  1. SDI OUT: 12G/6G/3G/HD-SDI output.
  2. SDI OUT: 12G/6G/3G/HD-SDI output.
  3. Slide Switch: [Left] 3.5mm Stereo Audio Embedding Function (2ch).
    [Middle] HDMI Audio Bypass (up to 7.1ch).
    [Right] F/W update.
  4. Signal LED: Illuminates when an HDMI input is detected.
  5. Power LED: Illuminates when power is connected.
  6. Micro USB Port: 5V DC power.
  7. Stereo Audio Input: 3.5mm Stereo mini input.
  8. HDMI loop-out: Connects to an HDMI display.
  9. HDMI IN: Connects to an HDMI source.