Click image to enlarge VMIX104
Video Overlay/Annotation module for PC/104

The VMIX104 is a low power real time Video Overlay Controller capable of accepting a combination of up to 4 PAL/NTSC signals plus Text and Graphics overlay. The resulting information, with up to 4 live video windows, is output as high quality composite PAL/NTSC signal suitable for driving a wide range of display devices.

The VMIX104 offloads compute-intensive video processing allowing the unit to be hosted by a low end PC/104 computer over standard 8/16-bit PC/104 bus. Built-in video multiplexers allow selection of 4 concurrent sources from a total of up to 8 cameras. Any of the 4 selected inputs can be re-sized, cropped, re-positioned and overlayed or Alpha-blended with text/graphics and output to PAL/NTSC. Viewing modes include side-by-side, quadrant display, picture-in-picture, etc providing a high degree of video overlay flexibility. The VMIX104 is supported by a suite of drivers for Windows, Linux.


  • Supports 4 NTSC / RS-170, PAL / CCIR analog video sources
  • Text and Graphics Overlay on live video
  • Alpha blending of Overlay and live video
  • Composite or S-Video output
  • Resizing and positioning of Video Windows
  • Drivers for Windows, Linux
  • Compact 3.6in x 3.8in PC/104 form factor
  • Single +5V power supply
Supported Platforms Windows 7, Windows 8, Windows 10, Linux
PC/104 Bus Interface
  • Standard 8/16-bit PC/104
Analog Video Input
  • Four concurrent composite PAL or NTSC video input channels
  • Digital Line-Lock technology for reliable locking to any video source
  • Two composite video inputs per channel (up to 8 cameras)
  • Video multiplexer on each channel
  • Four 10-bit video Analog-to-Digital converters
Video Input Formats
  • Standard CCIR601-NTSC, CCIR-PAL
  • NTSC-M, NTSC-Japan
Video Input Adjustments
  • Contrast (or luma gain) adjustable from 0 – 200% of original value
  • Saturation (or chroma gain) adjustable from 0 – 200% of original value
  • Brightness (or luma level) can be adjusted from 0 – 255 steps
Video Windowing
  • 4 Video Windows with Text/Graphics Overlay to PAL/NTSC Output
  • Title and Border for Video Windows
  • Video Windows are re-sizeable to full screen
  • Pan, zoom and scaling on input video
  • Arbitrary sizing, cropping and positioning of video windows
  • Vertical and horizontal mirroring per channel
Text/Graphics Overlay
  • Overlay of computer generated bitmap on live video
  • Overlay of Truetype font text
  • 720×576 bitmap overlay buffer
  • 64 color overlay
  • Programmable Overlay/Blend attribute per pixel
  • Programmable 25%, 50%, 75% Alpha Blending
Analog Video Output
  • PAL/NTSC Composite Video Output
  • PAL/NTSC S-Video Output
  • RS170 Video Output
  • 3 10-bit video Digital-to-Analog converters
System Requirements
  • X86 PC-Compatible PC/104 host computer
  • Spare 16 bytes in I/O space
  • +5V signalling
  • Single +5V at less than 800mA
  • Operating temp 0°C to 60°C or –40°C to +85°C (extended temp option)
  • Standard 3.6 x 3.8in PC/104 form factor
  • PAL/NTSC Video Overlay Controller for PC/104
  • Rev 1.00
  • Drivers for Windows, Linux
  • Sample video overlay application in C/C++ source code
VMIX104 Block Diagram

Order Enquiry for VMIX104

Product Codes
  • VMIX104 - PAL/NTSC Video Overlay Controller (0 to 60°C)
  • VMIX104-EXT - PAL/NTSC Video Overlay Controller (-40°C to +85°C)
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