supports two different, simultaneous video timings, with one timing supporting two
output and the other supporting four.

Since the VideoSplitter/2 takes the output from the Display Subsystem, the input mav
actually be more than the 1.3M pixels in a single frame buffer.  If four Raster Manager
boards are used to provide anti-aliased support for 2.6M pixels, the input to the
VideoSplitter would be 2.6M pixels rather than 1.3M, allowing for up to two high-
resolution 60Hz, non-interfaced displays out of one pipeline, or even a mix of high-
resolution and multiple lower-resolution displays as in Figure 12.

This flexibility enables users to add functionality only as it is needed, rather than
having to obtain excess svstem capacity up front.  This lowers both initial and
incremental system costs.

5.6.15 Recording Video Output
In addition to the standard, roamable video window included with the system, other
options enable the generation of recordable video signals from the output of a
RealitvEngine graphics pipeline.  These options support single-frame or real-time scan
conversion from high-resolution to various video resolutions with interfaces that
support deck control for single or multiframe recording of system output.


Unlike the standard, roaming video output, the VideoCreator is in add-on VME
board (or separate SCSI device) that generates a composite video signal from the full-
screen display by scan-converting the high-resolution (1280x1024) screen down to
video resolutions (separate NTSC or PAL versions are available).

The output from the VideoCreator is available in composite, RS-170A, and S-Video
formats in either 525 (NTSC) or 625 (PAL) timings.  Genlock is supported for all the
resolutions.  VideoCreator is a low-cost scan-converter, providing real-time video
output at itiditstrial grade quality.


The current, VGX-oriented, VideoLab option does not operate with the RealityEngine.
A RealityEngine version of VideoLab will be available at a later date.


For those applications that do not require real-time output, yet still require broadcast
quality, the VideoFramer offers single-frame input and output of NTSC, PAL, DI, D2,
BETACAM, and other video formats.  VideoFramer is a 9U VME device.

5.6.16 Video Input

Applications requiring the capture and display of high-quality, still video imagery can
utilize the VideoFramer video option board, while those requiring live video input
will be served by upcoming video boards following the RealityEngine introduction.
The VGX/VGXT class VideoLab board does NOT operate with the RealityEngine.