BLANKOM HDD-275 IPTV Decoder and Mosaic Viewer

4K IP Decoder with Mosaic Viewer | HDD-275/HDD-275H

BLANKOM HDD-275/HDD-275H

IP Decoder BLANKOM HDD-275 serves the distribution of Full HD and UHD TV/video content through IP networks in digital quality.

The live video can be received by the decoder as an IP stream and displayed on standard TV sets.

4-Stream Mosaic Display in HD or UHD selectable by Web-IF

All functions of the unit can be controlled over LAN.

Interfaces

HDMI, HD-SDI, CVBS, VGA video outputs, HDMI/SDI embedded audio & External Analog audio outputs, 1000Mbps, RJ-45 data interface
Outstanding features

Very stable IPTV stream decoder for 24/7 professional use.
Access and control of all functions over LAN.
Mosaic function.
Text and logo insertion.
Available models

HDD-275 with HDMI, SDI, VGA, CVBS outputs
HDD-275H with HDMI, VGA, CVBS outputs
HDD-4275 4 pcs HDD-275 in one 19-inch rack unit (with HDMI, SDI, VGA, CVBS outputs)
HDD-4275H 4 pcs HDD-275H in one 19-inch rack unit (with HDMI, VGA, CVBS outputs)

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4K UHD IP Video Decoder with HDMI, HD-SDI, CVBS (PAL, NTSC), VGA Output & Mosaic-Viewer

IP Decoder (IPTV Receiver, IPTV Decoder) for IPTV-on-LAN systems, for OTT, and for video-over-IP applications. Up to 3840×2160@30fps UHD resolution. Incredibly reliable operation on local area networks with both unicast and multicast distribution. HDMI, HD-SDI, CVBS (PAL, NTSC Composite), and VGA outputs. Remote management by an in-built web server interface.

Mosaic viewer. Monitoring up to four streams on a single television screen (4x mosaic).

All BLANKOM decoders offer perfect image quality and stable system operation at an affordable price. They have been designed to work flawlessly with every BLANKOM encoder.

BLANKOM HDD-275 4K UHD IPTV Decoder

 

  • H.265 and H.264 Decoder & IP Receiver
  • Linux embedded system that is reliable and suitable for 24/7 operation
  • Input:
    IP streaming, H.264 or H.265 (actually no MPEG2 support)
  • Outputs:
    HDMI, CVBS, VGA, and HD-SDI in parallel (Model: HDD-275)
    HDMI, CVBS, and VGA in parallel (Model: HDD-275H)
    Audio Output (3.5 mm Stereo) for stereo audio embedded decoding of AAC and MP1L2
  • UHD Resolution 2160p30, 1080p, 720p (actually no interlaced support like 720i, 1080i)
  • Streaming protocols: SRT / HTTP / HLS / FLV / RTSP / RTMP(S) / UDP / RTP (unicast/multicast) ONVIF, NDI
  • Reception of video camera UHD/HD streams and other source content over LAN or WAN
  • Monitoring of up to 4 streams on one TV picture (4x Mosaic) selectable by Web-IF
  • Max. simultaneous video decoding capacity on a mosaic screen:
    1 channel 3840 x  2160@30 fps or
    2 channels 1080p@60 fps or
    3 channels 1080p@45 fps or
    4 channels 1080p@30 fps
  • Inserting text, logos, and scrolling text as overlays
  • Video-over-IP applications (signal distribution)
  • Digital signage applications
  • Video conferencing, camera streaming
  • IPTV on LAN applications, corporate IPTV for broadcasters
  • Remote management by an in-built web server interface
  • Suitable for 24/7 operation

 

 

 

BLANKOM HDD-275 IPTV Decoder Application Diagram

BLANKOM HDD-275 4K IP Decoder – Professional Application Examples

  • Broadcast Master Control Room (MCR) Confidence Monitoring: Functioning as a high-density multi-viewer core inside television stations. By leveraging its integrated Mosaic Viewer engine, operators can ingest multiple independent IP stream backhauls simultaneously and display them in a split-screen matrix on a single ultra-high-definition monitor for real-time visual quality control.

  • Public Internet Remote UHD Contribution (SRT Peer): Serving as an operator-grade terminal at primary broadcast studios to receive ultra-high-definition live feeds transmitted from remote fields, sports venues, or distant OB vans over the public internet utilizing the low-latency SRT (Secure Reliable Transport) protocol with hardware-based AES decryption.

  • IPTV Headend Central Stream Auditing: Deployed within telecommunication server rooms and IPTV headends to continuously process and visually monitor egress transport streams (MPTS/SPTS). It allows engineers to verify video synchronization, pixel integrity, and table parameters before final regional distribution.

  • Premium Hospitality & Stadium Video Networks: Operating as a high-end central decoder inside luxury hotels, cruise ships, or stadium VIP suites to decode high-bitrate 4K IP streams and deliver uncompressed, pristine 4K resolution feeds directly to large-scale hospitality matrix networks and digital video hubs.

  • Command & Control Center Visual Aggregation: Positioned within military, municipal, or public utility command facilities to ingest complex, multi-source IP video feeds—such as real-time drone contribution streams, high-resolution geographic telemetry, and operational visuals—and consolidate them cleanly onto primary video walls.

  • Ultra-HD Digital Signage Master Controller: Serving as a reliable, continuous 24/7 endpoint controller for high-impact commercial marketing displays in airports, flagship retail stores, and mass transit hubs, smoothly rendering high-throughput 4K video loops directly via HLS or HTTP without the thermal signature or instability of a local PC.

  • High-Density IP Surveillance Wall Integration: Capturing and decoding multiple concurrent enterprise-level live IP camera or NVR feeds directly over the network via RTSP or UDP protocols, allowing facility security operations to maintain full situational awareness across a multi-window display on a single large-format screen.

  • Higher-Education Distance Learning & Campus Hubs: Deployed inside university medical theaters, large lecture halls, or remote campus network centers to decode high-fidelity, real-time interactive lectures, multi-angle camera feeds, and ultra-HD media payloads originated from the primary educational hub.

  • Live Webcast & Social Media Return-Feed Monitoring: Stationed in broadcast production trucks or live event staging sites to capture, decode, and visually audit outgoing high-definition webcasts directly from public platforms or Content Delivery Networks (CDNs) over RTMP, RTMPS, or HLS, providing production crews with a rock-solid return feed.

  • Medical Imaging & Operating Room Remote Consulting: Integrating into high-tier hospital IT infrastructures to capture uncompressed 4K medical imaging data or training video from precise surgical cameras within sterile zones, decoding the payload live for consulting physicians, remote students, or diagnostic auditoriums without compression artifacts.

 

BLANKOM HDD-275 and HDD-275H IPTV Decoders are designed for TV signal reception in excellent quality over LAN and WAN.

The H.265 (HEVC) and H.264-compatible compression technology features low latency and low bit rates for IPTV system reception. The highly efficient decoding chip saves bandwidth cost through all its resolution range.

Reception of SD, HD, and UHD TV channels through the IPTV/OTT network using state-of-the-art IP technology from almost any kind of video input.

Either 1 stream in UHD or, for monitoring, up to 4 streams on one TV output as a mosaic picture can be displayed.

Excellent video and audio quality. High reliability. Web Interface. No regular service and maintenance are needed during operation.

HDD-275, in addition to all the features of HDD-275H, also has an HD-SDI output.

BLANKOM HDD-275 Screen Mosaic

BLANKOM HDD-275 Screen Mosaic View (4-Stream Mosaic-Display in HD or UHD selectable by Web-IF)

 

Function: h.265 (HEVC compatible) and h.264 (MPEG4 compatible) decoder and 4 pictures Mosaic-Viewer

INPUT

  • GbE input, RJ45
  • Input Resolution: 2160p, 1080p, 720p and below (interlaced resolutions like 1080i, 720i are not supported!)
  • Streaming Protocols: SRT / HTTP / HLS / FLV / RTSP / RTMP(S) / UDP / RTP (Unicast/Multicast) ONVIF, NDI
  • Data rates: 100 kbps – 32 Mbps per stream

OUTPUT

  • Output Resolution HDMI: 3840×2160P@30 / 1440P@30 / 1080P@60 / 1080i@60 / 1080P@50 / 1080i@50 / 1080P30 / 1080P25 / 720P60 / 720P50 / 576P50 / 480P60 fps
  • Output Resolution HD-SDI: 1080P@60 / 1080i@60 / 1080P@50 / 1080i@50 / 1080P30 / 1080P25 / 720P60 / 720P50 / 576P50 / 480P60 fps (HDD-275 only)
  • Output Resolution VGA: 1080P@60 / 1080i@60 / 1080P@50 / 1080i@50 / 1080P30 / 1080P25 / 720P60 / 720P50 / 576P50 / 480P60 fps
  • Output Resolution CVBS: PAL 720×576 & NTSC 720×480
  • Audio: HDMI/HD-SDI embedded audio (additional 2.5 mm stereo jack out)
  • Maximum decoding data rate @ HDMI: 1 picture stream output: 4k@30fps @32Mbps
  • Up to 4 input streams for mosaic picture:
    • 1-1080p@60fps bit rate can be up to 32 Mbps
    • 2-1080p@60fps@10Mbps max. for each stream
    • 3-1080p@50fps@10Mbps max. for each stream
    • 4-1080p@30fps@20Mbps max. for each stream

SYSTEM

  • Video Decoder: H.265 (HEVC) or H.264 (AVC) in max. 4K@30fps (MPEG2 not supported!)
  • CBR or VBR baseline/main/high profile
  • Audio Decoder: Stereo AAC/AAC+/AAC++/MP3/MP2/AC3 G711
  • Audio sample rates: 8000/11250/22500/44100/48000 Hz
  • OSD 4 Logo (bmp’s with or without transparent color) and text insertion as transparent overlays
  • Picture adjust brightness, hue, saturation, contrast, picture crop, rotating 0, 90, 180, 270°
  • Profiles H.264/AVC High/Main/Baseline Profile H.265/HEVC main profile MJPEG/JPEG baseline
  • Audio output: HDMI/HD-SDI embedded audio (additional 2.5 mm stereo jack out)
  • Firmware upgrade support by Web IF

GENERAL

  • Relative Humidity: 5% to 90% non-condensing
  • Storage temperature: -20° to 80 °C
  • Operating temperature: -10° to 70 °C
  • Power supply: 12V DC, 1A
  • Dimensions: 180 × 150 × 25 mm
  • Weight 0.5 kg / incl. Package and PSU: 0.7 kg
  • Consumption 5-10W

Specifications are subject to change without prior notice.

 

The BLANKOM 4K IP Decoder is an operator-grade hardware decoding unit designed for IPTV headends, broadcast control rooms, and professional AV distribution networks. It is engineered to ingest high-throughput digital IP transport streams from network sources and decode them in real time into pristine uncompressed baseband video signals for display monitoring or studio routing.

Yes, the BLANKOM 4K IP Decoder incorporates an advanced integrated Mosaic Viewer (Multi-Viewer) engine. A Mosaic Viewer is a hardware-driven feature that allows the decoder to capture and decode multiple independent incoming IP video streams concurrently, dynamically scaling and arranging them into a single, combined multi-window display layout (such as a split-screen matrix) on a single monitor screen.

The primary application of the Mosaic Viewer is professional confidence monitoring, quality control (QC), and visual surveillance within broadcast master control rooms (MCR), headend centers, and digital signage operations. It enables station operators and network engineers to visually audit up to dozens of live television channels or stream backhauls simultaneously on a single large-screen display, entirely eliminating the need for separate, costly individual hardware decoders and physical video switchers for every single feed.

To interface seamlessly with commercial video matrices, studio switchers, and professional displays, the hardware egress tier is equipped with high-bandwidth physical outputs. It natively features a premium HDMI output supporting resolutions up to 4K Ultra-HD alongside professional broadcast-grade BNC SDI interfaces featuring embedded digital audio parameters.

The hardware processing pipelines are fully optimized to handle next-generation resolution targets, natively decoding ultra-high-definition content up to 4K Ultra-HD at 60 frames per second (4K@60fps). This ensures perfectly fluid motion rendering, exceptional edge sharpness, and precise color tracking critical for broadcast-level compliance monitoring.

The advanced donanımsal core features high-performance decoding pipelines that comprehensively support H.265 (HEVC) and H.264 (AVC) video standard compression profiles. This broad compatibility allows the device to parse high-bitrate primary streams as well as highly compressed edge streams while maintaining absolute pixel integrity.

Adhering strictly to professional B2B telecom networking specifications, the input network processing layer handles an extensive matrix of streaming protocols. It natively manages stream acquisition over SRT (Secure Reliable Transport), HTTP, RTSP, RTMP, RTMPS, HLS, UDP, and RTP encapsulation configurations, functioning perfectly across local multicast networks or secure public internet links.

When capturing live video feeds transmitted from remote fields or distant production sites over lossy public networks, the decoder leverages its integrated SRT (Secure Reliable Transport) protocol layer. SRT actively uses smart ARQ packet recovery to eliminate network jitter and packet dropouts, while supporting industry-standard AES decryption to protect secure incoming broadcast payloads.

The audio processing stage extracts and decodes multi-channel digital audio payloads embedded inside the transport streams. It natively processes standard broadcast acoustic formats—predominantly AAC, MP3, MP2, and AC3 (Dolby Digital)—offering flexible configuration modes for digital audio pass-through or local stereo downmixing.

Core system provisioning, incoming stream protocol mapping, mosaic viewer grid layout arrangements, and output video configurations are managed exclusively via an embedded WebGUI using a standard web browser over a dedicated, independent Ethernet management interface. This provides network administrators with a secure, isolated, and highly responsive web-based control plane.

 

 

 

 

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