Matrox RT.X2 User Manual page 169

¦ Note If Adobe Premiere Pro is running, the Project Format and Output
will be determined by your Premiere Pro project's video output
Format
settings.
If you selected an output format that has a frame rate of 25 or 50 fps, and
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your DVI video monitor is unable to properly display your preview output,
select Force DVI Output to 60 Hz (Bypass Autodetect) . Otherwise, make
sure this option isn't selected to allow Matrox RT.X2 to automatically detect
the frequency rates supported by your DVI video monitor and set the DVI
output frequency accordingly.
From the Preview Type menu, select one of the following options for the
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preview:
Video Select this to view your composition or animation.
$
Alpha Channel
$
animation's grayscale alpha-key (matte) information.
From the Scaling menu, select one of the following options for your preview
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output:
Scale to fit
$
aspect ratio of your project format will be preserved.
Original Size
$
are playing back HD clips in an SD project, your output will be centered
on your video monitor.
Select this to view only your composition's or
Select this to scale your output to fit your video monitor. The
Select this to output your video without any scaling. If you
Configuring the Matrox WYSIWYG Control Panel
161