• Single HDMI capture channel
  • Up to 297 Mpixel/s clock capturing up to 4096x2160p @ 30fps
  • 800 MB/s DMA bandwidth
  • High performance up and down scaling
  • Colour space conversion to support output formats
  • PCI Express Gen 1 x 4 low profile
  • Media Foundation supported
  • Unified Windows® and Linux® driver support
  • Single channel "LiveStream:Capture" card

    Discreet video capture is now the mainstay of many small form factor appliances being uses in markets such as lecture capture, distance learning and medical environments. The XtremeLC-HD provides HDMI capture for use within such applications.

    EMS's LiveStream:Capture architecture allows captured video to be processed and delivered in real time to a processor or graphics card. The XtremeLC-HD supports on board colour space conversion and scaling, providing the ability to efficiently transfer the video signal in a suitable format for rendering or encoding applications. The XtremeLC-HD natively supports 32, 24, 16 and 12 bit YUV and RGB formats.

    Multi-application capture

    The XtremeLC-HD capture card has been designed for use within application models such as:

    • Medical environments
    • Simulation systems
    • Live events
    • PC and gaming console capture
    • Lecture and presentation capture
    • Real time streaming

    It is also possible to put more than a single card into a system for multiple capture channels.

    Due to the nature of the LiveStream:Capture architecture, the XtremeLC-HD is not supported for wall controller applications that depend on EMS's MultiStream technology.

    Video streaming

    Built upon the Microsoft AV stream model, XtremeLC-HD inputs can be accessed and enumerated in any DirectShow or Media Foundation supported application. A video for Linux (V4L) driver package is also available to download.

    Tested applications includes:

    • Microsoft Media Encoder
    • VLC
    • Telestream WireCast
    • vMix
    • Opencast Matterhorn
    • VidBlaster
    • OBS Project
    • Adobe Flash Media Encoder
    • Dataton Watchout


    • Single HDMI capture channel
    • Up to 297 Mpixel/s clock capturing up to 4096x2160p @ 30fps
    • 800 MB/s DMA bandwidth
    • High performance up and down scaling
    • Colour space conversion to support output formats
    • PCI Express Gen 1 x 4 low profile
    • EMS unified Windows® and Linux® driver support


    Low Input to Output Capture Latency
    • DMA to third party graphics vendors back and front buffers via Direct3D
    • Compatibility with AMD DirectGMA
    • Compatibility with Nvidia GPUDirect

    User Mode filter for source selection
    • Enables cropping support in DirectShow on all inputs 
    • Supports Start and Stop trigger interface on all XtremeLC inputs

     Unified Xtreme Driver

    • Multiple cards per system, 16 streams per input Frame sync and time stamping DirectShow interface
    • The RGBEasy API for advanced audio and video control

    The XtremeLC-HD is supplied with a powerful software application for configuring the format of the input sources and displaying the data. 

    Simply connect your video source into the card, run the XtremeLC application to automatically detect the video source format and display the captured video in a window on your desktop.


    Board Format

    PCIe Gen 1 x 4 plug-in card


    103mm x 64mm (l x h)



    Pixel Rate

    297 Mpixel/s

    Maximum Capture Resolution

    4096x2160p @ 30Hz

    Transfer Rate

    800MB maximum DMA transfer rate

    Hardware Colour Space Conversion

    30 / 24 / 16 bit RGB (4:4:4)

    16 bit YUV (4:2:2)

    12 bit YUV, NV12, YV12 (4:2:0)

    Audio Support

    Stereo pair PCM audio via each HDMI channel at 16 bits in depth, sampling options include 44.1/ 48/ 96 kHz

    Low Latency


    Single frame time plus DMA transfer of final line

    Operating Sysytem Support


    Windows® XP, Windows Vista, Windows Server 2003, Windows Server 2008, Windows 7, Windows 8/8.1 and Windows 10

    Power Requirements

    Max current at 1A at 3.3V

    Max power ≈ 3.3W

    Operating Temperature

    0 to 35 deg C/ 32 to 96 deg F

    Storage Temperature

    -20 to 70 deg C (-4 to 158 deg F)

    Relative Humidity

    5% to 90% non-condensing


    3 years

    We are continuously developing the technology used within our product ranges delivering outstanding innovative solutions, therefore the specification may change from time to time.

    Software Application

    Windows Media Encoder Adobe flash adobe connect hdwave broadcast
    vlc amcap microsoft expression vidblaster
      virtualdub watchout streampix

  • Listed below are all the items included when you order the XtremeLC-HD video capture card.



    cd user guide
    Video Capture Card

    Software / Drivers


    User Guide

  • Here you can download our Datasheets, Manuals, Application and Drivers?



    XtremeLC-HD Video Capture Card Datasheet



    XtremeLC Range User Manual



    XtremeLC Range Driver




    View the application areas

    View different areas of application in which EMS products have been integrated.

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