Click image to enlarge H264-2SDI-XMC
Quad-channel XMC Mezzanine HD H.264 Encoder

The H264-2SDI-XMC is an ultra-low latency, quad channel,  H.264 encoder on an XMC Mezzanine form factor board. The H264-2SDI-XMC provides a powerful and flexible solution for concurrently capturing and compressing high definition HD-SDI inputs and standard definition PAL/NTSC/RS170 inputs to H.264/MPEG-4 AVC (Part 10) standard.

The H264-2SDI-XMC is ideal for time-critical, low latency IP streaming applications as it offers Ultra Low Latency encoding of below 40ms across the entire capture resolution range. The flexible H.264 engine allows low latency encoding of all 4 channels and has a maximum throughput of 1080p60. This allows combinations such as; single channel @ 1080p60, dual channel @ 1080p30, or, quad channel encode of 1x 1080p30, 1x720p30, and 2x PAL/NTSC/RS-170 concurrent encodes.

The H264-2SDI-XMC supports 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 for processing.

NB: Preliminary Information Subject To Change


  • Single channel encode at up to 1080p60
  • Dual channel encode at up to 1080p30
  • Quad channel encode at up to:
    • 1x1080p30, 1x720p30, 2xNTSC/PAL/RS-170
  • 2x HD-SDI inputs
  • 2x Composite/S-Video NTSC/PAL/RS-170 inputs
  • Ultra Low Latency encoder (below 40ms)
  • H.264/MPEG-4 AVC (Part 10) encoder
  • Intra-refresh to improve bandwidth utilization
  • Motion detection with motion vector information
  • XMC Mezzanine form factor
  • Drivers for Windows and Linux


  • Remote moving platforms
  • Remotely guided vehicles
  • UAVs
  • Vehicle cameras
  • Remote video surveillance
  • Electronic news gathering
  • Multi-camera systems
  • Traffic monitoring and control
  • Solid-state digital video recorder
  • Intranet/Internet video streaming


The H264-2SDI-XMC 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.

Supported Platforms Windows 7, Windows 8, Windows 10, Linux
XMC Interface
  • PCI Express 2.0 compliant
  • x1 PCI Express port
Ultra Low Latency Technology
  • Less than 40 ms encode latency
Video input ports
  • 2 x high definition HD-SDI input ports
  • 2 x PAL/NTSC/RS-170 video input ports, from:
    • Composite
    • S-Video
Video capture resolutions
  • Flexible capture resolutions, 16×16 pixel granularity
  • Standard resolutions supported include:
    • 1080p60, 1080i60, 1080p50, 1080i50
      720p60, 720i60, 720p50, 720i50
      480p60, 576p50
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
  • Encoding up to 1080p60 (or equivalent multi channel encode)
  • Single channel encode at up to 1x 1080p60
  • Dual channel encode at up to 2x 1080p30
  • Quad channel encode (example):
    • 1x HD-SDI @ 1080p30,
    • 1x HD-SDI @720p30
    • 2x PAL/NTSC/RS-170
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
Configuration support per stream
  • Frame rate
  • Resolution
  • Bit rate control
  • Key frame interval
  • Intra-refresh mode
System Requirements
  • X86 Host Computer with XMC site
  • Standard 2.91 x 5.87 Single-width CMC Mezzanine form factor
  • IEEE 1386 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
H264-2SDI-XMC Block Diagram

Order Enquiry for H264-2SDI-XMC

Product Codes
  • H264-2SDI-XMC - Video Encoder (0 to 60˚C)
  • H264-2SDI-XMC-EXT - Video Encoder (-40˚C to +85˚C)
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