Click image to enlarge H264-HD-2SDI
Dual HD-SDI H.264 Encoder for PC/104-Express

The H264-HD-2SDI is an ultra low latency Dual channel H.264 encoder available on a single PC/104-Express form factor board. It allows system builders to easily add high definition HD-SDI video capture with H.264/MPEG-4 AVC (Part 10) encoding to their embedded PC equipment designs.

The H264-HD-2SDI accepts 2 SDI sources, supporting input video resolutions from 480p60 up to 1080p60. In addition to video, the H264-HD-2SDI offers extraction of KLV (MISB 0605.3 compliant) embedded data contained within the HD-SDI signal. The video and metadata are synchronized and transferred to the host system over the PC/104-Express bus.

The powerful H.264 encoding engine supports ultra low latency full frame rate encoding of two HD video sources at up to 1080p30. In single channel mode, the H264-HD-2SDI can encode at full 1080p60 and perform stream duplication of the video input to provide multiple encodings of the same input.


  • Dual channel encode at up 1080p30
  • Single channel encode at up to 1080p60
  • Dual SDI input
  • KLV extraction from SDI sources (MISB 0605.3 compliant)
  • H.264/MPEG-4 AVC (Part 10) encoder
  • Ultra Low Latency technology with a latency below 40ms
  • Intra-refresh to improve bandwidth utilization
  • Multiple encodes of same input with different settings
  • PC/104-Express form factor
  • Drivers for Windows and Linux
Supported Platforms Windows 7, Windows 8, Windows 10, Linux
PC/104-Express Bus Interface
  • Single x1 PCI Express Link
Video input ports
  • Flexible capture resolutions, 16×16 pixel granularity.
    Standard resolutions supported include:

    • 1080p60, 1080i60, 1080p50, 1080i50
      720p60, 720i60, 720p50, 720i50
      480p60, 576p50
Ultra Low Latency
  • Less than 40ms encode latency
Video compression
  • H.264 baseline and Main Profile up to L4.2
  • Interlaced and progressive video encode support
  • Real-time multi stream H.264 Ultra Low Latency capture
  • Dual channel encode at up to 1080p30
  • Single channel encode at up to 1080p60
KLV Metadata
  • Embedded KLV metadata captured from SDI input
  • MISB 0605.3 compliant
  • Synchronized with video
Bit rate control
  • Constant bit rate (CBR)
  • Variable bit rate (VBR)
Pre- and post-processing
  • Trans-rating and trans-sizing
  • Selective blocking of video input regions
  • Stream duplication
Configuration support per stream
  • Frame rate
  • Resolution
  • Bit rate control
  • Key frame interval
  • Intra-refresh mode
System Requirements
  • x86 PC-Compatible PCI104-Express Host Computer
  • Standard 3.6 x 3.8in PC/104-Express form factor
Operational characteristics
  • Operating temperature 0˚C to 60˚C
  • Extended temperature -40˚C to +85˚C (option)
  • Drivers for Windows, Linux
  • Comprehensive video recording SDK
  • Sample video recording application in C/C++ source code
H264-HD-2SDI Block Diagram

Order Enquiry for H264-HD-2SDI

Product Codes
  • H264-HD-2SDI - Video Compression Card (0 to 60˚C)
  • H264-HD-2SDI-EXT - Video Compression Card (-40˚C to +85˚C)
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