User`s manual

V 1 P R O F E S S I O N A L 5 . 7
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working well with the V1 version 4.0, your system should continue to operate with
“Legacy VfW” selected, as it provides essentially the same technology used in the V1
version 4.0.
Dual-camera DirectShow mode is only possible if there are two or more cameras listed
in the DirectShow list box. The dual-camera mode will open the first two cameras on
that list, and present them in a split-screen in your V1 window. Consult the next
section for more information regarding the use of two cameras.
The V1 High Speed Camera ™ requires a special camera, device drivers, and a V1
software license available from Interactive Frontiers. This camera provides more than
160 images per second (for comparison, standard NTSC cameras provide 60). See a
section later in this chapter for installation instructions.
There are three options on the Live Video options window under the heading of
“advanced.” The first, Use VMR mixing mode , should only be used on systems with
high-end video display adapters, such as a newer ATI or NVIDIA models—it allows
for higher-quality “flipped” live video and full-motion playback. This option may not
be disabled on the V1 Widescreen version.
The next option, Draw video directly to desktop (RGB format) , should only be used
if you are experiencing a problem with your live video display, as it results in a decrease
in the previewed video quality. You may wish to enable this feature if you experience a
“pink screen” when using live video on an external video display or VCR.
The last option, DV Decoder Resolution , applies only to systems using IEEE-1394
(FireWire
®
) cameras and the DirectShow device mode. Most systems will require this
to be set at “Half.” High-end systems will adequately handle “Full.” If a system is not
quick enough to handle “Full” DV decoder resolution, live video will appear
excessively delayed and possibly choppy, and some recording errors may be observed.
Lowering this setting does cause some reduction in previewed live video quality, but does
not affect recorded video quality and video playback.
If you are using a Legacy VfW camera, holding the Live button for 3 seconds causes a
Video for Windows configuration window to appear.
Live Video Preview
When the V1 completes its loading process, it will attempt to display video from the
configured camera(s) as covered in the previous sections. If live video is unavailable, a
message with an error number will be displayed on the screen.