System information
2.
Select the Preview on External Monitor button in the Video Preview window.
You can turn off external preview by pressing Alt+Shift+4.
Video is sent to the external monitor and the Video Preview window at the same time. If you
experience dropped frames, try clearing the Display frames in Video Preview window during
playback check box on the Preview Device tab in the Preferences dialog.
Selectively Prerender Video
From the Tools menu, choose Selectively Prerender Video to render temporary preview files for the
sections of your project that cannot be rendered in real time. These temporary preview files are used when
you play back that section of the project.
When you perform a selective prerender, a separate preview file is created for each section of your project
that needs to be prerendered. Sections that contain transitions, effects, and compositing will need to be
prerendered; unprocessed DV media files will not.
Selective prerendering is helpful when previewing on an external monitor. For more information, see
"Using an External Video Monitor" on page 474.
1. Select the area of your project that you want to preview. If there is no time selection, the entire
project will be used.
2. From the Tools menu, choose Selectively Prerender Video. The Prerender Video dialog appears.
3. Choose a template from the Template drop-down list to specify the parameters that should be used
for rendering your file, or click the Custom button to create a new template. For more information,
see "Custom Rendering Templates" on page 526.
Notes:
n Select the Stretch video to fill output frame size (do not letterbox) check box when you are
rendering to an output format with a slightly different aspect ratio than your project
settings. This will prevent black bars from appearing on the top and bottom or the sides of
the output.
n Select the Use project output rotation setting check box if you're rendering a rotated
project and want to use the Output rotation setting from the Project Properties dialog for
your rendered file.
When the check box is cleared, the media is rotated according to its Media Properties setting,
but the project itself is unrotated—you can use this setting to proof your project on an
unrotated display. For more information, see "Creating Rotated Projects" on page 65.
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