TV / Video Encoder, Decoder and Converter

High Quality Decoder

Decoder and HDMI <-> SDI Converter

Decoder are the opposite of the Streaming-Encoder:
IP Inputs to HDMI, CVBS or SDI outputs supporting various Input-Streaming protocols and TV/Audio Codecs.

Apart form the usage of an IPTV Set Top Box (STB) as an IPTV 'Decoder' we are offering 2 remote managed Types of Decoders designed to operate perfectly together with our SoC based boxed Encoder Types supporting multiple IP Transport protocols from Unicast to Multicast

Off-Topic Tricks and how to setup the SoC encoders for YouTube and other use cases: Extra Tipps and Tricks Page - Multiprotocol-Encoders

HDD-275 (-H) 4Kp30 to HDMI, CVBS, VGA and HD-SDI in parallel


The BLANKOM HDD-275 IPTV decoder is designed for IP stream reception e.g. as a digital signage device for excellent picture quality. The h.265 (HEVC) and h.264 compatible compression technology features low latency and low bit rates for IPTV reception over LAN and WAN. The highly efficient decoding chip saves bandwidth costs across the entire resolution range. Receive SD, HD and UHD TV channels over IPTV/OTT network with latest state-of-the-art codecs and stream protocols as perfect counterpart to our SoC encoders. Either 1 stream in UHD or for monitoring up to 4 streams can be arranged on the TV output as a mosaic image. Excellent video and audio quality. High reliability. Web interface. 24/7: No need for regular service and maintenance during operation.
Use-Case: Adding local and foreign TV channels to your Cable-Network by receiving eg. RTMP streams, decoding to HDMI and Re-Encode-Modulate into your DVB-C network.


  • Available as HDD-275-H: W/o SDI output - see picture right side
  • High Quality metal shielded casing
  • Inputs: 1x UHD/HD/SD in h.264 or h.265 compatible streams
  • Stereo Audio embedded decoding of AAC and MP1L2, external Audio Output (3.5mm Stereo)
  • UHD Resolution 2160p30, 1080p, 720p.... no interlaced
  • MPTS Input with Program selection for decoding
  • Reception of Video Camera UHD/HD streams and other source content over LAN or WAN
  • Max. 2 CVBS + 2 HDMI simultaneous and independent Live stream broadcasting encoder engines to multiple destinations
  • Hospitality IP-to-TV Digital Signage applications
  • Inserting of Text, Logos and scrolling Text as TV-Overlays
  • 4-Stream Mosaic-Display in HD or UHD selectable by Web-IF
  • Remote management by an inbuilt Webserver-Interface

Download the HDD-275 Datasheet as PDF document

HDD-276 4Kp60 to HDMI, CVBS in parallel


Differences to HDD-275:

  • Inputs: 1x UHD 4Kp60 HDR /HD/SD in h.264 or h.265 compatible streams like from our Encoders:
  • Transcoding capable: Input-Stream can be re-encoded and re-streamed
  • No SDI-output but CVBS PAL/NTSC
  • Upscaling possible
  • Decoding to HDMI,Downscaling to CVBS-BNC out and Transcoding to IP-Multiprotocol stream outputs

HDD-276 UHD Applications

Download HDD-276 Datasheet PDF

HSD-450 HDMI to 2x HD-SDI Converter - SHD-450 HD-SDI to HDMI


The HSD-450 HDMI to SDI Converter allows HDMI signal to be shown on SDI displays while ensuring high Resolution of 1080p to give you fast signal transmission without any loss. For professionals this means that it is now easier to distribute and extend your HDMI signal while giving you the ability to display your work on SDI displays thanks to the built in SDI converter. Furthermore, thanks to the Dual output SDI design, users are able to enjoy SDI distribution at the same time.

The SHD-450 SDI to HDMI Converter allows SD-SDI, HD-SDI, and 3G-SDI signal to be shown on HDMI/SDI displays while ensuring high bit rates of 2.970 G bit/s to give you fast signal transmission without any loss. For professionals this means that it is now easier to distribute and extend your 3G SDI signal while giving you the ability to display your work on HDMI displays thanks to the built in HDMI converter. Pure hardware design, scaler, Intelligent Identification, broadcast-grade circuit design.

Main Features of HDMI to SDI to HDMI Converters:

  • FULL HD1080p (3G-SDI) and backward 1080i/720p (HD-SDI) &576i/480p (SD-SDI)
  • Low SDI Jitter and SDI re-clocking = long cable compensation w/o any loss of Video quality
  • HSD-450 HDMI to 2x HD-SDI has 2 SDI output
  • SHD-450 HD-SDI to HDMI has a SDI-Loop output
  • Automatic input standard and format detection
  • Usecase: HDMI cable has restrictions: 10m. To easy extend this with Coax up to 100m use both as a couple
  • Designed for 24/7 continuously operation

Download the Datasheet PDF's: