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Single channel HDMI capture card

  • 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
  • EMS unified Windows® and Linux® driver support

XtremeLC-HD Single-Channel LiveStream Capture Card provides HDMI video and audio capture for small form factor appliances being used in medical environments, simulation systems, live events, PC and gaming console capture, lecture and presentation capture, and real-time streaming. More than one card can be added into a system for multiple capture channels


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


Board Format PCIe Gen 1 x 4 plug-in card
Dimensions103mm x 64mm (l x h)
Pixel Rate297 Mpixel/s
Maximum Capture Resolution3840x2160p @ 30Hz
Transfer Rate800MB maximum DMA transfer rate
Hardware Colour Space Conversion30 / 24 / 16 bit RGB (4:4:4)
16 bit YUV (4:2:2)
12 bit YUV, NV12, YV12 (4:2:0)
Audio SupporStereo pair PCM audio via each HDMI channel at 16 bits in depth, sampling options include 44.1/ 48/ 96 kHz
Low LatencyLiveStream:Capture
Single frame time plus DMA transfer of final line
Operating System SupportLinux,
Windows® XP, Windows Vista, Windows Server 2003, Windows Server 2008, Windows 7, Windows 8/8.1 and Windows 10
Power RequirementsMax 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)
Video format optionsAnalog RGB plus HSync and VSync (5 wire)
Operating system supportWindows XP, Windows Server 2003, Windows Vista, Windows Server 2008, Windows Server 2012, Windows 7, Windows 8 and Linux support (NOTE: Check Linux specific features with Sales)
Power RequirementsMax current at +3.3V - 0.25A
Max current at 12V - 1.2A
Max power - 15 Watts
Operating Temperature0 to 35 °C/ 32 to 96 °F
Storage Temperature-20 to 70 °C/ -4 to 158 °F
Relative Humidity5% to 90% non-condensing
Warranty3 years



Order Code: XtremeLC-HD
Single channel “LiveStream:Capture” card


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