Race Recall - Australia's On Board Digital Video Camera & Communications Specialists Helmet Camera

The VIDEO4 records both video and audio data to the same standard as a DVD. It is in the same format as most digital TV broadcasts. In technical terms this means that:

* The video is stored at D1 (DVD) resolution using a very high quality MPEG2 encoder (see the FAQ section on different encoding methods).
* The audio is encoded as stereo (16 bit / 48k) and encoded with MP2. It is therefore comparable with CD quality.
* The video and audio are combined into a standard MPG file that can be played by most PC based players. They can also be copied onto a DVD that most hardware players will allow you to view.

Data/Video synchronisation

One of the key advantages of the VIDEO4 is its ability to store perfectly synchronised video and data. To do this, the VIDEO4 takes the data from any of our data-logging products - via it's built in data port - and stores it along side the video. As the VIDEO4 receives the data, it decodes it and adds in details of the frame of video that is currently being stored. When the data is subsequently decoded, the software knows exactly which frame of data should be displayed.
Video Overlay

The video overlay is of the highest quality. It is fully configurable to the user's exact requirements.

The following, graphic display methods may be user defined and added to the screen in a number of different combinations:

* Scaled video picture in pictures from up to three channels
* Simple fixed text
* Bitmaps
* Numerical values from the data (for example speed, temperatures, lap times)
* Dials (e.g. an RPM display)
* Bar-graphs

All the overlaid graphics are:

* 24 bit colour (with a maximum of sixteen million colours)
* Alpha blended, so that all graphics may be made translucent if required
* Anti-aliased, so that the graphics look smooth and professional
* Added at full D1/DVD resolution, so that they are as clear as possible

A PC program is provided with the unit. It will enable you to design the layout of the screen overlays to meet your needs. Once this has been done, the layout is simply uploaded to the VIDEO4. If no overlay is required for a particular application then it can, of course, be left blank.


VIDEO4 internals