Viper – OEM Board for 4K HDMI transport over IP

The Viper boards are fully integrated boards that enable the development of ultra-low latency audio/video over IP products. The transmit and receive boards are production-ready and reduce the development cost of the system. Viper features high resolutions up to 4K/UHD over 1Gb, 2.5Gb and 10Gb Ethernet cable. The HDMI 2.0 video is transported over Ethernet after compression with the VC-2 HQ or JPEG 2000 video compression.

Viper OEM board for HDMI over IP


  • Residential and Commercial Audio/Video distribution
  • Digital signage
  • Video wall
  • Video conferencing
  • HDMI extender
  • HDMI capture and transmission to server
  • VC-2 HQ or JPEG 2000 encoding/decoding


HDMI distribution over IP network

Ultra-low latency 4K/UHD Video transport over 1G Ethernet

The Viper TX and RX boards are optimized for real-time audio/video transmission. The latency is extremely low, only 5ms for the VC-2 HQ version even though the video signal is compressed. This is only possible thanks to the VC-2 HQ codec that only adds a few video lines of latency compared to an uncompressed solution. The JPEG 2000 version also has very low latency around 15 ms.

JPEG 2000 version with support up to 4K 60fps 4:4:4

The JPEG 2000 version of Viper enables transport of HDMI 2.0 video with resolution up to 4K 60fps 4:4:4 over a single 1G ethernet cable. Network infrastructure cost is then much lower than comparable solutions requiring 10G Ethernet cabling and switching. The JPEG 2000 version includes all the same features as the original VC-2 HQ version, namely, video wall extension, stream encryption, forward error correction for increased reliability, image processing features and more.

Flexible networking capabilities for video and audio

The Viper boards can be used to efficiently transport audio/video streams over an IP network. The TX board is used to interface the HDMI source to the network, while one or multiple RX boards can be used to receive the audio/video stream. Several TX boards can be used on the same network in order to share the content of multiple HDMI sources. Each RX board can select the channel to receive.
viper network

Analog audio embedding/de-embedding

The boards are also equipped with analog audio input and output in addition to the HDMI audio. Each input audio stream is routed individually and the receiver can be configured to output the audio over the HDMI or analog audio connector.

4K Video Wall with image split over 4 displays

Viper boards can be used to drive a video wall from a single source thanks to the IP multicast streaming and video processing functions. Each Viper receiver can decode a part of the image, and output it over the HDMI cable.

The details that make the difference

Secure and reliable audio/video transmission

The transmission of the audio and video from the encoder to the decoder board can be protected with AES encryption in order to guarantee confidentiality of the streamed content. Additionally, forward error correction (FEC) provides a reliable audio/video transmission in case of packet loss or corruption. The Viper device can be authenticated on the network with 802.1x protocol.

Advanced image processing and Video Wall capabilities

The Viper boards also support upscaling/downscaling and cropping of the video to match the receiving display. The administrator can easily insert a logo, image or scrolling text on top of the video content. The Video Wall mode enables to spread the video source over an array of displays. Its configuration is very flexible supporting many different layouts of displays.

AES67 and SMPTE 2110

Viper transport protocol is based on open standard SMPTE 2110. Viper also supports transporting the uncompressed audio with the AES67 protocol. The AES67 protocol adds interoperability with many other audio devices. The audio source is synchronized with the PTP clock of the network.

Power over Ethernet (PoE)

With the Power-over-Ethernet feature, networking communication and power supply can be provided over a single Ethernet cable. The external power supply is not required anymore. The Viper boards are compliant with the IEEE 802.3af/at.


The Viper products can also be tailored to your needs. The on-board SoC FPGA is an extremely flexible solution. The video/audio path is processed in real-time within the FPGA fabric while the processor is handling all the control and configuration of the board. Both the FPGA firmware and the CPU software can be changed to match your needs. Please contact our sales team to discuss your specific requirements. The expertise of Silex Insight in high-end video technology is the guarantee for a fast time-to-market with a high quality product.

Viper versions

The Viper 4K HDMI over IP product family includes 4 variants.

VIPER-HV4K2-TX: Transmitter HDMI over IP 4K with VC-2 HQ compression

VIPER-HV4K2-RX: Receiver HDMI over IP 4K with VC-2 HQ compression

VIPER-HJ4K2-TX: Transmitter HDMI over IP 4K with JPEG 2000 compression

VIPER-HJ4K2-RX: Receiver HDMI over IP 4K with JPEG 2000 compression