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H264-ULL-SD4 - Ultra Low Latency Quad H.264 Encoder

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The H264-ULL-SD4 is an ultra low latency, quad channel, H.264 encoder on a single PCI/104 form factor board. The H264-ULL-SD4 provides a powerful and flexible solution for capturing and compressing up to 4 analog video inputs at full size and at full frame rate to the H.264/MPEG-4 AVC (Part 10) standard.

In addition to the ultra low latency full frame rate encoding of four NTSC/PAL analog video sources, the H264-ULL-SD4 also supports stream duplication to provide multiple encodings of the same input. This allows streams to be created at different resolution, compression settings dependent on requirements and available bandwidth.

The high performance H.264 video compression and efficient bus utilization allows up to four H264-ULL-SD4 to be fitted in a PCI/104 system.



  • Real time 4x full size H.264 encode at full frame rate
  • Composite NTSC/PAL/RS-170 video input
  • H.264/MPEG-4 AVC (Part 10) encoder
  • Ultra Low Latency technology with a latency below 40ms (ULL H.264 compression)
  • Intra-refresh to improve bandwidth utilization
  • Multiple encodes of same input with different settings
  • Motion detection
  • Video Masking
  • Remote monitoring and control
  • PCI/104 form factor
  • Drivers for WinXP-E and Linux

Software Development Kits

The H264-ULL-SD4 is supported by comprehensive and well supported software development kits (SDKs) for video recording and video streaming. The SDKs are designed to significantly reduce development time in Windows, Linux and QNX environments and include support libraries, drivers and example applications to help developers fully utilize the H264-ULL-SD4 features in complex video compression / overlay applications.

The standard Video Recording SDK and sample applications are supplied free of charge with each board and includes the services of our technical support team. The Video Streaming SDK is available for a one-time fee and enables real time streaming of compressed video data over an IP network.

The standard SDKs are available for x86 based embedded PC platforms however, we also offer SDK's suitable for PC/104-Plus based PowerPC and ARM platforms. Please contact our sales team to discuss your requirements.

PCI/104 Bus Interface

  • Compliant with PCI Rev 2.1
  • 132 MBytes/sec bandwidth at 33.33 MHz bus speed
  • Single +5 V supply

Analog Video Input

  • 4 composite NTSC/PAL/RS-170 video input channels
  • Anti-aliasing filters on inputs

Video Input Formats

  • Standard CCIR601-NTSC, CCIR-PAL
  • NTSC-M, NTSC-N, NTSC-J, NTSC (4.43), RS-170

Video Input Adjustments

  • Contrast (or luma gain) adjustable from 0-200% of original
  • Saturation (or chroma gain) adjustable from 0-200% of original
  • Hue (or chroma phase) adjustable from -180° to +180°
  • Brightness (or luma level) can be adjusted from 25 to +25 IRE
  • Software adjustable Sharpness, Gamma and noise suppression

Ultra Low Latency

  • Less than 40ms encode latency

Video Encoding

  • H.264 ISO/IEC 14496-10 baseline and Main Profile up to L4.2
  • Interlaced and progressive video encode support
  • Real-time multi stream H.264 Ultra Low Latency capture
  • 4 channel NTSC D1 (720x480) at 30fps
  • 4 channel PAL D1 (720x576) at 25fps

Bit rate control

  • Constant bit rate (CBR)
  • Variable bit rate (VBR)

Motion detection

  • Motion detection at macroblock granularity
  • Motion vector information

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 PCI/104 Computer
  • Spare REQ/GNT on PCI/104 Bus
  • 3.3V signalling PCI/104 bus


  • Standard 3.6 x 3.8in PCI/104 form factor

Operational characteristics

  • Operating temperature 0°C to 60°C
  • Extended temperature -40°C to +85°C (option)


  • Drivers for Win-XP, Linux
  • Comprehensive video recording SDK
  • Sample video recording application in C/C++ source code

The following order codes can be used when ordering the H264-ULL-SD4

H264-ULL-SD4 - Video Compression Card (0 to 60°C)
H264-ULL-SD4-Ext - Video Compression Card (-40°C to +85°C)

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