BLANKOM HDD-276 IP Decoder and Transcoder

4K IP Decoder & Transcoder | HDD-276

BLANKOM HDD-276

The BLANKOM HDD-276 IP Video Decoder & Transcoder is capable of receiving SRT/HTTP(S)/HLS/FLV/RTSP/RTMP(S)/UDP/RTP (Unicast/Multicast) streams from our HDMI/VGA/SDI/CVBS IP stream encoders, decoding H.265/H.264 video and audio, and then delivering it through HDMI, CVBS, VGA, and L/R stereo audio. It also can perform IP transcoding to H.265 or H.264 IP TS with different resolutions and fps. Its high integration level and cost-effective design make this device widely used in various fields such as advertising display, CCTV, long-distance video transfer, and IPTV.

Interfaces

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

Very stable IPTV stream decoder and IP Transcoder for 24/7 professional use.
Access and control of all functions over LAN.
Text and logo insertion.

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4K UHD IP Decoder with HDMI, CVBS (PAL, NTSC), VGA Output & IP Stream Transcoding

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, CVBS (PAL, NTSC Composite), and VGA outputs. Remote management by an in-built web server interface.

Transcoding feature: Input stream can be re-encoded and re-streamed.

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-276 IP Decoder and Transcoder

  • H.265 and H.264 Decoder & IP Receiver
  • Transcoding: Input Stream can be re-encoded and re-streamed
  • Upscaling possible
  • Decoding to HDMI, Downscaling to Analog CVBS (PAL or NTSC) and Transcoding to IP-Multiprotocol stream outputs
  • 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, and VGA in parallel
    Audio Output (3.5 mm Stereo) for stereo audio embedded decoding of AAC and MP1L2
  • Stereo audio embedded decoding of AAC and MP1L2, external audio output (3.5 mm stereo)
  • 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
  • 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

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BLANKOM HDD-276 IP Decoder and Transcoder Application Diagram

BLANKOM HDD-276 – Professional Application Examples

  • Broadcast Codec Bridge & Protocol Transcoding: Operating as a central gateway in IPTV headends to transcode incoming high-efficiency H.265 (HEVC) streams into standard H.264 (AVC) formats in real time, ensuring seamless compatibility with legacy IP set-top boxes (STBs) and older downstream network decoders.

  • Public Internet Remote UHD Contribution with Local Loop: Receiving high-bitrate 4K Ultra-HD live feeds from remote OB vans or fields over the public internet via the low-latency SRT (Secure Reliable Transport) protocol. The unit decodes the signal to local studio monitors via HDMI/SDI while simultaneously transcoding a low-bandwidth proxy stream for remote web-based monitoring.

  • IP Camera Grid Downscaling for Mobile Streaming: Ingesting multiple high-resolution 4K IP security cameras or NVR feeds via RTSP/UDP, decoding them for local multi-viewer monitoring walls, and concurrently transcoding the video feeds into lower resolutions and bitrates for smooth, bandwidth-optimized mobile viewing profiles.

  • Enterprise IPTV Headend Bandwidth Optimization: Stationed at regional corporate offices to ingest high-throughput, uncompressed-grade 4K master streams from the central company hub and transcoding them into high-efficiency, lower-bitrate profiles tailored to fit within restricted local LAN/WAN constraints without sacrificing pixel integrity.

  • Hospitality IPTV Network Legacy Integration: Deployed in multi-room hospitality systems, such as hotels or cruise ships, to ingest modern 4K UHD IP streams, decoding them to primary high-end displays while transcoding the core multiplex into standard HD IP formats compatible with older in-room television networks.

  • Live Event Multi-Platform Webcasting: Stationed at live production venues to ingest primary operational streams via SRT or UDP, decoding them on-site for visual confidence monitoring while simultaneously transcoding and pushing the feeds over RTMP/RTMPS or HLS protocols directly to public social media networks and CDNs.

  • Command & Control Center Visual Node & Stream Relay: Serving as a dual-purpose visual node in municipal, utility, or defense control centers. It decodes real-time high-definition drone or telemetry feeds onto the main video walls while concurrently re-streaming the data as a secure, transcoded multicast package to field operators.

  • Higher-Education Lecture Capture & Multi-Campus Streaming: Positioned within university media hubs to ingest high-fidelity 4K medical imaging or lecture camera feeds, decoding them inside local auditoriums for students while transcoding the payload into adaptive bitrate streams for cross-campus distance learning networks.

  • Digital Signage Content Adaptation: Acting as an intelligent edge controller for large-scale commercial advertising grids. It ingests unified high-throughput master files from a remote server via HTTP/HLS, automatically scaling and transcoding the content to fit diverse vertical or smaller-format display panels across transit hubs.

  • Medical Telemedicine & Diagnostic Remote Overviews: Integrating into advanced hospital network infrastructures to capture uncompressed diagnostic imagery or surgical camera streams within operating rooms, decoding them to local medical teams while transcoding the video feed into a highly encrypted, lower-bandwidth profile for remote consulting specialists.

 

Embedded HiLinux System, stable and effective, 24/7 operation.

Friendly Web Control User Interface

SRT / HTTP / HLS / FLV / RTSP / RTMP(S) / UDP/RTP (Unicast/Multicast) stream decoding & IP stream transcoding.

4096×2160@60fps, 1080P/1080I/720P@60FPS output resolution

H.265/H.264 baseline /main /high profile & MJPG MP2 decoding

Remote controlling via router port forward.

Function: H.265 (HEVC compatible) and H.264 (MPEG4 compatible) Decoder and Transcoder with HDR support

INPUT

  • GbE input, RJ45
  • Input Resolution: 2160p60, 1080p60, 720p and below
  • Streaming Protocols:
    Unicast: HTTP / adaptive HLS / FLV / RTSP/UDP / RTMP(s) / SRT: push & passphrase
    Multicast: UDP/RTP
  • Data rates: 100 kbps – 32 Mbps per stream
  • IPTV in SPTS and MPTS (service selection) supported

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

SYSTEM

  • Video Decoder H.265 (HEVC) or H.264 (AVC) in max. 4K@60fps HDR-support: Dolby, HDR10, HLG, Auto
  • CBR or VBR baseline/main/high profile
  • Audio Decoder STEREO AAC/AAC+/AAC++/MP3/MP2/AC3 G711
  • Audio sample rates 8000/11250/22500/44100/48000Hz
  • 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)
  • HDMI max out format: 3840*2160P@60/1440P@30/1080P@60/1080I@60/1080P@50/1080I@50
    1080P30/1080P25/720P60/720P50/576P50/480P60 fps
  • CVBS output: PAL 720×576 or NTSC 720×480
  • Transcoded stream: maximum output format = 1080p@60fps
  • Maximum decoding data rate @ HDMI: 1 picture stream output: 4k@60fps @32mbps
  • 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: 105 × 100 × 24 mm
  • Weight 240 g / incl. Package and PSU: 0.7 kg
  • Consumption 5W

Specifications are subject to change without prior notice.

The BLANKOM HDD-276 is a high-performance, broadcast-grade 4K Ultra-HD IP hardware decoder and transcoder. It is engineered to receive professional IP streaming transport feeds and decode them into crisp physical video outputs, or cross-transcode them into optimized secondary network streams, seamlessly serving high-end corporate, studio, and commercial AV infrastructures.

The physical architecture of the HDD-276 incorporates professional high-bandwidth output interfaces, notably including HDMI and specialized BNC connectors (such as 3G-SDI or 12G-SDI depending on factory hardware module layouts). This enables true 4K UHD video rendering up to 2160p at 60Hz directly onto enterprise display walls, broadcast switchers, or digital matrix grids.

The integrated hardware processing core comprehensively decodes and cross-transcodes modern high-efficiency compression formats. It supports H.265 (HEVC), H.264 (AVC), and MPEG-2 video streams with deep color profiles, ensuring absolute versatility when handling ultra-high-bitrate IP camera feeds, contribution satellite links, or OTT distribution blocks.

The unit adheres strictly to professional telecom B2B IP networking specifications, ingesting streams over a wide array of transport protocols. It natively supports SRT (Secure Reliable Transport), HTTP, RTSP, RTMP, HLS, UDP, and RTP protocols in both Multicast and Unicast topologies, guaranteeing stable link acquisition over local networks and public internet connections.

Yes, depending on software feature configuration and core resource allocation, the HDD-276 can function simultaneously as an IP-to-baseband hardware decoder and an IP-to-IP linear transcoder/protocol gateway. This allows operators to decode an incoming SRT 4K feed to an SDI matrix while re-streaming it onto the local network as a compressed UDP multicast block.

To combat packet loss, network jitter, and latency spikes encountered over public internet links, the HDD-276 relies on its fully integrated, native SRT engine. This infrastructure implements advanced ARQ (Auto Repeat Request) packet recovery mechanisms and accommodates industry-standard AES-128 or AES-256 bit encryption layers to ensure end-to-end stream security.

The audio processing stage natively decodes standard broadcast audio compression structures, including AAC, AAC+, AAC++, MP3, MP2, and AC3 (Dolby Digital). The device supports audio pass-through embedded inside the HDMI/SDI lines, volume gain manipulation, and downmixing to ensure perfect acoustic reproduction on downstream sound matrices.

System parameter initialization, decoding output parameters, incoming link packet tracking, and interface routing are managed exclusively via an embedded WebGUI using a standard web browser over a dedicated independent Ethernet management port. This model line does not support SNMP management, prioritizing low-overhead web administration and a highly secure control plane.

The hardware platform features multiple high-capacity independent Gigabit Ethernet (1000M) data interfaces. This layout enforces strict physical layer separation, allowing network engineers to terminate demanding incoming public WAN streams on one port while dedicating entirely separate physical interfaces to local network control or cascade distribution links, preventing local network bottlenecks.

Built for continuous 24/7/365 operational demands, the HDD-276 features a rugged, energy-efficient enclosure tailored for standard equipment mounting rack trays or compact space-conscious installation footprints. For critical master control rooms or primary distribution points, configurations can be verified through our technical Ordering Guides on irenis-blankom.com to guarantee stable thermal management under continuous high-throughput decoding.

 

 

 

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