Matrox RT.X2 User Manual page 163

particular codec, they are also set for the other codecs that support those
options.
Standard
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Super black and super white luminance levels are clipped.
DV-compliant
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material. This ensures that the super white luminance levels of your video
are retained.
Expanded
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black and super white luminance levels are retained. You may want to use
this setting, for example, to render material on which you'll be applying
luminance key effects.
¡ Important When rendering RGB graphics, selecting Expanded or
DV-compliant
For example, if you select Expanded , all black in your RGB graphics will
become super black, and white will become super white. To render your
RGB graphics with standard black and white levels, set your luminance
range to Standard .
Chroma filtering
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adjust the chroma bandwidth of RGB graphics. This improves images that
have abrupt changes between different colors, such as a blue box on a black
or white background. You should select these options for most animation
and compositing work (computer-generated material). For most video
editing programs, however, it's best that you not select these options. If you
find that your rendered images appear to be blurred, try clearing one or both
of these options.
Chroma sampling for fast-motion video
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eliminate artifacts such as jagged edges and unwanted lines at the edges of
fast-motion video (for PAL video only).
¡ Important When rendering graphics and titles, make sure that Chroma
sampling for fast-motion video
jagged edges to appear in your rendered images.
Click OK to save your settings. Any change you make to your selected
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luminance range setting (such as switching from Standard to Expanded )
will only take effect the next time you start your VFW program.
Renders video using standard broadcast luminance levels.
Renders video using luminance levels appropriate for DV
Renders video using the full range of luminance levels. Super
will create super black and/or white in your rendered images.
and Chroma interpolation Select these options to
is not selected, as this option can cause
Select this option to help
Before you start rendering
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