BLANKOM HDE-275Q Streaming encoder

4 Channel, 4K HDMI to IP Encoder & Streamer | HDE-275Q

BLANKOM HDE-275Q

4 Channel version of HDE-275, the 4K Ultra High Definition (UHD) encoder & streamer for live broadcasting platforms and Video-over-IP applications.

The BLANKOM HDE-275Q is the definitive solution for high-definition video streaming. This cutting-edge HDMI encoder ensures flawless video quality, ensuring sharp and vibrant broadcasts. The HDE-275Q’s sturdy construction ensures smooth operation and enduring durability, making it an ideal choice for all your streaming requirements.

The process of configuring the BLANKOM HDE-275Q is effortless, enabling you to commence operations swiftly and without any complication. Its intuitive interface makes it easy to focus on what matters most—creating and sharing exceptional content. Furthermore, with dedicated after-sales support from Germany, you can rest assured that expert assistance is just a call away.

If you need an IP streamer for live events, an HDMI-input streamer for direct connections, or a versatile IP streamer encoder HDMI for different applications, the BLANKOM HDE-275Q is the best choice. Elevate your streaming experience with this powerful HDMI encoder!

All BLANKOM encoders offer perfect image quality and stable system operation at an affordable price.

 

Inputs

4x HDMI, HDMI embedded audio, 1x external analog stereo input by 3.5mm jack
Outputs

GbE IP (up to 4 IP Streams per channel)
Outstanding features

HDE-275Q supports a maximum resolution of 4096×2160@30fps at the input, and up to a stream resolution of 4096×2160@30fps at the output. It works with stream protocols SRT / HTTP / HLS / FLV / RTSP / RTMP / RTMPS / UDP/RTP (Unicast/Multicast) and ONVIF. The HDE-275Q is compatible with online live-streaming services, such as YouTube, Facebook, Ustream, and others.

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4 Channel 4Kp30 UHD H.265 (HEVC) and H.264 Streaming Encoder with 4 Streams Output per Channel

 

Up to 3840*2160@30fps UHD resolution. Very stable operation on multicast distribution on local area networks. Suitable for Video-over-IP application through the internet. 4 IP output streams per channel at the same time with different resolutions, e.g. for LAN, YouTube, Facebook, Twitch simultaneously. All BLANKOM encoders offer perfect image quality and stable system operation at an affordable price.

BLANKOM HDE-275Q 4 channel encoder serves the distribution of SD/HD and UHD TV/video content through IP networks in digital quality. The live video can be received by Internet media server by TV sets with IPTV Set-Top Boxes, on PC’s and tablets with VLC Player.

BLANKOM HDE-275Q 4 Channel 4K HDMI Streaming Encoder

BLANKOM HDE-275Q 4 Channel 4K HDMI Streaming Encoder

  • H.265 / H.264 / MJPEG Encoder & IP Streamer combined
  • 4x HDMI compatible inputs
  • HDMI 1 & 2 Max supports 3840*2160@30fps, HDMI 3 & 4 Max @1080P 60fps
  • Stereo Audio Input (external input for one channel, embedded HDMI audio on all channels)
  • 4 IP streams output per channel
  • Stable and effective embedded HiLinux OS
  • HD Resolution 2160p30 (4K), 1080p, 1080i, 720p and downscaling down to 176×144
  • Low latency: > 200ms … 1200ms max., depending on configuration and load
  • IP output: HTTP, RTSP, RTMP, RTMPS, UDP/RTP, FLV, ONVIF, HLS, SRT; unicast/multicast output.
  • Distribution of Video camera, PC Monitor, dif. STB, DVD / Blu-ray player content over LAN, WAN or Internet
  • Live stream broadcast, Digital signage, Video conferencing, RTSP support
  • Video-over IP applications
  • IPTV/OTT/Info-Channel applications
  • Local IPTV on LAN applications, Corporate IPTV, Hotel IPTV, Campus IPTV, Education IPTV
  • VLC and FFmpeg mode selectable
  • VBR/CBR bitrate mode encoding
  • Logo insertion (as *.bmp file) and Text insertion feature on main stream & on secondary streams
  • Streams to Ustream, Atlas™, Wowza®, and Adobe® Flash® Servers, www.vmix.com conform to YouTube, Vimeo, X, Facebook, Twitch live broadcast platforms
  • HLS encoding feature, Android and iOS mobile devices compatible

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BLANKOM HDE-275Q 4 Channel 4K HDMI Streaming Encoder Application

B2B application examples demonstrating how to leverage the asymmetric port layout of the HDE-275:

  • Hybrid Medical Operating Room Broadcasting & Archiving: In advanced hospital surgical suites, a 4K endoscope camera and a 4K overhead field camera are connected to HDMI Inputs 1 & 2 (capturing full 4K30 precision). Concurrently, a vital sign patient monitor and a room-view pan-tilt-zoom camera are routed to HDMI Inputs 3 & 4 (streaming at 1080p60 for fluid motion). The HDE-275 compresses all 4 sources simultaneously and broadcasts them via UDP Multicast to the university lecture rooms, while archiving a physical master backup onto local USB storage.

  • Control Room SCADA Map and Live Security Integration: Industrial power plants utilize the HDE-275 to centralize operational overviews. The two main master SCADA graphics workstations, which require absolute pixel clarity for text and grid layouts, are fed into the 4K-capable HDMI 1 & 2 ports. Meanwhile, two local facility overview surveillance cameras are fed into HDMI 3 & 4 at 1080p60. The system streams the combined layouts over secure SRT protocols to a secondary disaster recovery center located miles away.

  • Multi-Source Lecture Capture and Distance Learning: In university auditoriums, the HDE-275 acts as a complete multi-input capture hub. The professor’s high-resolution 4K presentation notebook and a 4K digital visualizer document camera occupy HDMI 1 & 2. The tracking camera capturing the professor’s physical movements and a student-facing camera are handled by HDMI 3 & 4 at 1080p60 to capture smooth motion. This asymmetric combination feeds the campus IPTV headend and streams an RTMP feed to public educational channels simultaneously.

  • Corporate Executive Boardroom and AV Presentation Hub: During global corporate town halls, the main 4K camera focused on the keynote speakers and the high-resolution 4K data display matrix are fed into HDMI Inputs 1 & 2. Two auxiliary 1080p cameras capturing audience reactions and local video conference participants are routed into HDMI Inputs 3 & 4. The HDE-275 streams these 4 distinct signals to a cloud CDN platform, giving remote viewers the ability to switch between high-clarity 4K content and smooth Full HD reaction views.

  • Hospitality IPTV Headend Ingestion for Mixed-Source Channels: Hotel networks deploy the HDE-275 at the central server rack to inject localized programming into their internal IPTV distribution line. Two high-end 4K promotional media players looping premium scenery videos are connected to HDMI 1 & 2. Two standard HD receivers delivering local information loops or live news tickers at 1080p60 are plugged into HDMI 3 & 4. The unit bundles these 4 inputs into highly efficient H.265 transport streams, broadcasting them over the hotel’s network directly to edge Set-Top Boxes.

 

BLANKOM HDE-275Q IPTV encoder is designed for TV signal distribution in excellent quality over LAN and the INTERNET.

The H.264 and H.265 (HEVC)  compression technology features low-latency and low bit rates for IPTV/OTT systems. The high-efficiency encoding chips save bandwidth costs through all its resolution ranges.

Distribution of SD up to UHD TV channels through the IPTV/OTT network using state-of-the-art IP technology from almost any kind of video input.

Excellent video and audio quality.

High reliability. No regular service and maintenance is needed during operation.

From 1 input signal, 4 entirely different streams can be generated. The main stream can have up to 4K (2160p), the secondary streams can have up to 720p HD resolution.

On screen logo and text insertion. Through the HLS encoding feature, Android and iOS mobile devices are compatible.

The uni- and multicast streams can be assigned with DVB-conform table content to allow the integration into multiplexes of IP to DVB-Modulators.

The easy configuration is designed by a simple web interface application compatible with nearly every browser.

BLANKOM HDE-275Q 4 Channel 4K HDMI Streaming Encoder front

BLANKOM HDE-275Q 4 Channel 4K HDMI Streaming Encoder front

 

BLANKOM HDE-275Q 4 Channel 4K HDMI Streaming Encoder rear

BLANKOM HDE-275Q 4 Channel 4K HDMI Streaming Encoder rear

 

Function H.265 (HEVC) & H.264 (AVC) Encoder and IP Streamer

INPUT

  • 4x HDMI compatible inputs
  • Input Resolution: 2160p, 1080p, 1080i, 720p and below
  • HDMI 1 & 2 Max supports 3840*2160@30fps, HDMI 3 & 4 Max @1080P 60fps
  • Embedded audio from HDMI signal or stereo input by 3.5mm jack

OUTPUT

  • Simultaneous 4 different streams output per channel (Mainstream and 3 Substreams)
  • Video data rate 0.1 Mbps … 100 Mbps
  • Output Resolution: 2160p, 1080p, 1080i, 720p and below (max. 2160p@30fps or 1080p@60 fps on main stream)
  • Mainstream output resolution support: 4096×2160, 3840×2160, 1920×1080, 1680×1056, 1280×720, 1024×576, 850×480, 720×576, 720×540, 720×480, 720×404, 704×576, 640×480, 640×360, 608×448, 544×480, 480×480, 480×384, 480×360, 480×320, 480×272, 480×270, 400×320, 400×224, 352×480, 352×228, 320×256, 320×240, 320×180, 240×180, 176×144.
  • Video fps 5-144 fps

SYSTEM

  • HiLinux OS
  • TS protocols: HTTP(s), RTSP, RTMPs, UDP/RTP, FLV, ONVIF, HLS, SRT; unicast/multicast output.
  • EDID/ GAMMUT Modes: BT2020, BT709, BT601
  • ONVIF 2.x supported by RTSP: G711A
  • Video encoder h.264 and h.265 (MPEG-4, AVC) high profile Level 4.0 UHD 4K max. 60fps, MJPEG/JPEG baseline
  • Data interface RJ45, 1000 Base-T Ethernet interface, Management by web browser
  • VLC and FFmpeg mode selectable
  • Encoding Rate control CBR/VBR
  • GOP Structure IBBP Adv
  • Pre-treatment De-interlacing, Noise reduction, Sharpening, Y-C adjustments
  • Audio Encoding AAC (normal, +,++), MP3, MP1L2, AC3 G711 stereo compatible
  • Audio Bit-rate: 32k/48k/96k/128k/160k/192k, Data-rate: 12 kbps-640 kbps
  • Audio Sampling Rates 44.1 kHz, 48.0 kHz
  • User interface: WEB GUI
  • 4 Logo and Text Insertion as transparent overlays
  • Firmware upgrade support by WebIF

GENERAL

  • DC 12V 2A power adapter
  • Dimensions: 167*107*27 mm
  • Weight: 350g
  • Power consumption: 12W

Specifications are subject to change without prior notice.

 

The BLANKOM HDE-275 is a multi-channel, multi-functional hardware appliance designed to act as a high-density IP Encoder, Streamer, Recorder, and Player simultaneously. It ingests independent video feeds across 4 physical HDMI inputs, processes them through a high-efficiency hardware compression core, and distributes them over IP networks, while concurrently supporting localized backup recording or media playback functionalities.

The HDE-275 architecture features a specialized asymmetric processing matrix. It does not process 4K video across all 4 ports simultaneously. The precise hardware distribution limits are:

  • HDMI Input 1 & 2: Max resolution supports up to 3840×2160 at 30fps (4K UHD).

  • HDMI Input 3 & 4: Max resolution supports up to 1920×1080 at 60fps (Full HD). This specific combination marks the absolute simultaneous maximum processing capacity of the internal system-on-chip (SoC).

To ensure seamless bandwidth management and universal decoding compatibility, the HDE-275 supports H.265/HEVC (Main Profile) and H.264/AVC (High/Main/Baseline Profile) video encoding algorithms. For the audio payload, it utilizes industry-standard AAC-LC and MPEG-1 Layer II (MP2) compression, embedding high-fidelity stereo audio into the output transport streams.

The appliance integrates a flexible multi-protocol IP streaming engine. Each encoded channel can be broadcast simultaneously across various professional protocols, including UDP/RTP (Multicast and Unicast), SRT (Secure Reliable Transport), HTTP, RTSP, and RTMP/RTMPS, facilitating parallel delivery to local enterprise IPTV networks and public cloud CDNs.

Yes. The multi-stream engine allows operators to configure independent sub-streams for each input channel. This means you can distribute a primary 4K UHD stream from HDMI 1 to a main display system while generating a secondary, lower-bitrate 720p or 1080p sub-stream from the same channel for mobile viewing or local archiving, all without overloading the processor.

The hardware chassis includes integrated local storage interfaces (such as a USB port or MicroSD slot). Operators can configure the software to save live transport streams directly onto the attached physical media in TS or MP4 formats. This feature is highly valued for automated continuous logging or creating decentralized offline server backups.

Yes. Alongside its high-density encoding matrices, the HDE-275 contains a bidirectional decoding layout. It can ingest a compatible external IP video stream from the local network or fetch pre-recorded media files from its local USB/SD card storage, routing the decoded signal straight to a physical HDMI output port for television or monitoring array displays.

Yes, an advanced internal On-Screen Display (OSD) engine is integrated into each independent encoding channel. Network administrators can overlay customized text, system timestamps, corporate logos, and transparent watermark layers directly onto the video matrix via the browser management panel without interrupting the active live stream.

The device runs on a standalone, deeply hardened embedded Linux operating system and is managed entirely via an intuitive browser-based WebGUI (Web User Interface) over its RJ45 Ethernet port. It does not feature SNMP or third-party software dependencies, allowing engineers to configure all resolution modes, bitrates (CBR/VBR), and streaming links securely from any standard web browser.

The HDE-275 is built inside a rugged, industrial metal chassis utilizing an advanced fanless thermal cooling design. By eliminating all moving mechanical parts—which represent the primary failure points in standard hardware—the device operates with exceptional thermal stability. This compact, passive build is specifically optimized to prevent memory leaks and hardware lockups, providing a superior Mean Time Between Failures (MTBF) path for long-term 24/7/365 commercial headend installations.

 

 

 

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