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H264ULL-ENCODER - Ultra Low Latency Quad H.264 Encoder

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The H264ULL-ENCODER is an ultra low latency, quad channel, H.264 encoder on a single PCI/104 form factor board. The H264ULL-ENCODER 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.

The ultra low latency full frame rate encoding of four NTSC/ PAL analog video sources offered by the H264ULL-ENCODER can be combined with Advanced Micro Peripherals H264ULL- DECODER to produce an end-to-end ruggedized low latency video streaming solution.

The high performance H.264 video compression and efficient bus utilization allows the H264ULL-ENCODER to be hosted on a low power, fanless CPU, 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
  • Intra-refresh to improve bandwidth utilization
  • Multiple encodes of same input with different settings
  • Motion detection
  • Video Masking
  • Up to four H264ULL-ENCODER boards per system
  • Standard PCI/104 form factor
  • Drivers for WinXP-E and Linux

Software Development Kits

The H264ULL-ENCODER is supported by a set of well- documented and established SDKs that minimize development risk and shorten time to market for applications requiring video recording or streaming.

Block Diagram

Block Diagram

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°
  • Birightness (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 H264ULL-Encoder

H264ULL-ENCODER - Video Encoder Card (0 to 60°C)
H264ULL-ENCODER-Ext - Video Encoder Card (-40°C to +85°C)

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