BLANKOM HDE-275 Encoder Streamer

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

BLANKOM HDE-275

The BLANKOM HDE-275 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-275’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-275 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-275 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

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

GbE IP (up to 4 IP Streams), USB interface and TF-Card (Micro-SD) for recording
Outstanding features

HDE-275 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-275 is compatible with online live-streaming services, such as YouTube, Facebook, Ustream, and others.

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4K 30fps UHD H.265 (HEVC) and H.264 Streamer, Recorder, Player, with 4 Streams Output

 

4K Ultra High Definition (UHD) Streamer, Recorder, Player for live broadcasting platforms, and Video-over-IP applications. Up to 3840*2160@30fps UHD resolution. Very stable operation on multicast distribution on local area networks. Suitable for video-over-IP applications through the internet. 4 IP output streams at the same time with different resolutions, e.g., for LAN, YouTube, Facebook, and Twitch simultaneously. All BLANKOM encoders offer perfect image quality and stable system operation at an affordable price.

BLANKOM HDE-275 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 servers by TV sets with IPTV Set-Top Boxes, on PCs and tablets with VLC Player.

BLANKOM HDE-275 4K Streamer Recorder Player

  • H.265 / H.264 / MJPEG Encoder & IP Streamer combined
  • HDMI compatible input, USB interface, and (TF-) Micro-SD-Card slot for recording
  • Stereo Audio Input
  • 4 IP streams output
  • 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-275 4K Streamer Recorder Player Application Example

Here are 5 comprehensive application examples showcasing the multi-functional deployment capabilities of the HDE-275 in B2B environments:

  • Lecture Capture and Distance Learning in Universities: In higher education auditoriums, a professor’s presentation laptop or 4K document camera is connected to the HDMI input of the HDE-275. The device encodes the lecture in H.265 format and broadcasts it as a UDP Multicast stream across the campus network for live viewing. Concurrently, it records a pristine 4K copy to an attached USB flash drive, allowing the university to upload the lesson archive to its Learning Management System (LMS) later without requiring external capture cards.

  • Secure Corporate Town Hall Streaming with Local Archiving: During international corporate briefings, the master output of a studio AV mixer is routed via HDMI into the HDE-275. The device compresses the 4K video feed and streams it securely over the internet using the SRT protocol to a corporate cloud CDN for global offices. Simultaneously, the internal recorder saves the complete session locally onto an SD card, guaranteeing a physical, unthrottled backup file in the event of an unexpected wide-area network internet dropout.

  • Automated Hospitality and Retail Digital Signage (Looping Player Mode): For retail chains or hotel lobbies, the HDE-275 can be switched to Player Mode. A collection of 4K promotional videos is stored locally on its USB/SD storage interface. The device continuously loops these files, decoding them through its physical HDMI output to a primary display array. Because it supports remote web configuration, central management teams can update the stored video files over the local network via the WebGUI without removing the physical unit.

  • Local Government Council Meeting Broadcasting and Logging: Municipalities utilize the HDE-275 to handle public council sessions. The main camera feed is sent via HDMI to the device, which streams a high-definition RTMP/RTMPS feed directly to public social video platforms (like YouTube Live or Facebook Live). While streaming to the public, the unit simultaneously writes a continuous TS format log to its local storage block, satisfying compliance and transparency laws for official municipal record archiving.

  • Low-Latency Surveillance and Remote Drone Display Feeds: In remote monitoring installations or mobile command center setups, high-resolution cameras or drone receivers deliver a 4K HDMI feed. The HDE-275 encodes this live video stream and broadcasts it via ultra-low-latency RTSP or SRT channels to security team dashboards. Simultaneously, the encoder’s localized recording functionality registers every hour of footage in high-density H.265 compression onto local media, providing a reliable on-site backup solution for security audits.

 

BLANKOM HDE-275 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 saves bandwidth cost through all its resolution range.

Distribution of SD up to UHD TV channels through the IPTV/OTT network using state-of-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-275 4K Streamer Recorder Player front

BLANKOM HDE-275 4K Streamer Recorder Player front

 

BLANKOM HDE-275 4K Streamer Recorder Player rear

BLANKOM HDE-275 4K Streamer Recorder Player rear

 

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

INPUT

  • HDMI compatible input
  • Input Resolution 2160p, 1080p, 1080i, 720p and below
  • Embedded audio from HDMI signal or Stereo Input by 3.5mm jack
  • Recording over USB interface and to a TF-Card (Micro-SD)

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)
  • Main Stream 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
  • Recording over USB interface or to the optional TF-Card (Micro-SD)

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
  • Recording: TS-files to Micro-SD-Card or USB stick (high speed versions recommended)
    Supported Filesystems: NTFS, exFAT, FAT32 (FAT (16/32) are limited – check filesize limits)
  • User interface: WEB GUI
  • 4 Logo and Text Insertion as transparent overlays
  • Firmware upgrade support by WebIF

GENERAL

  • DC 12V 2A power adapter
  • Dimensions: 150 x 110 x 45 mm
  • Weight: 500g
  • Power consumption: 10W

Specifications are subject to change without prior notice.

 

The BLANKOM HDE-275 is a versatile, all-in-one professional hardware appliance designed to act as an IP Encoder, Streamer, Recorder, and Player simultaneously. It ingests high-definition video from an HDMI input, compresses it into high-efficiency IP streams, and can concurrently record the payload to local storage or act as a standalone IP media player decoding network feeds back to its HDMI output.

The advanced hardware core of the HDE-275 natively supports video inputs and encoding configurations up to 4K Ultra HD at 30 frames per second (3840x2160p30), as well as 1080p60 and lower standards. It utilizes high-efficiency H.265/HEVC and H.264/AVC video compression profiles combined with AAC-LC and MP2 audio layers to ensure premium broadcast-quality delivery at optimized bitrates.

To guarantee seamless integration into modern corporate networks, IPTV headends, and cloud delivery systems, the HDE-275 features a multi-protocol streaming engine. It supports UDP/RTP (Multicast and Unicast), SRT (Secure Reliable Transport), HTTP, RTSP, and RTMP/RTMPS protocols, allowing for simultaneous multi-destination broadcasting.

The device features integrated storage interfaces (such as a USB port or MicroSD slot) that enable direct localized archiving. Operators can configure the HDE-275 to record the incoming live HDMI stream locally in real time as standard TS or MP4 files, serving as an automated offline backup repository or a high-quality master log for post-event video editing.

Yes. Unlike traditional one-way streaming encoders, the HDE-275 features a bidirectional decoding core. It can ingest external IP video streams (such as HTTP, RTSP, or UDP feeds) from the network or play back pre-recorded media files from local storage, decoding the signal directly to its physical HDMI output port for television or video wall displays.

Yes, the appliance incorporates a multi-stream encoding architecture. It can process a single physical HDMI input into up to 4 independent IP output streams simultaneously. Each sub-stream can be individually adjusted with its own resolution, bitrate control mode (CBR/VBR), frame rate, and streaming protocol to match specific client device constraints.

Yes, the integrated hardware text/graphic engine allows network administrators to overlay customized text, time-stamps, corporate logos, and transparent watermarks directly onto the encoded video stream. This parameter can be modified on the fly via the management software without causing any packet drop or stream stuttering.

The unit runs on a stable, highly optimized embedded operating system and does not contain a built-in SNMP agent or complex external software requirements. It is managed completely remotely via an intuitive browser-based WebGUI (Web User Interface) over its standard RJ45 Ethernet management interface, giving administrators instant control over all encoding, recording, and playback variables.

The HDE-275 is built inside a rugged, industrial-grade metal chassis featuring an advanced fanless thermal cooling layout. By entirely eliminating moving mechanical parts—which are the primary point of failure in standard computing hardware—thermal dissipation is managed passively. Combined with a highly stable, lightweight embedded operating system that prevents memory leaks and software crashes, the device delivers an exceptional Mean Time Between Failures (MTBF) profile. It is fully rated and structurally optimized for continuous, long-term deployment in 24/7/365 commercial IPTV headends and digital signage loops.

Yes, to accommodate diverse audio integration environments, the HDE-275 hardware layout includes an independent 3.5mm stereo analog audio input port. Through the WebGUI, operators can explicitly choose to capture the digital audio embedded in the HDMI source line or inject an external line-level analog audio track from a local studio mixer or microphone array.

 

 

 

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