Sony Vegas 6 Manual

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CHP. 16PREVIEWING AND ANALYZING VIDEO
CHAPTER287
Previewing and 
Analyzing Video
As you work in Vegas® software, you can preview your video by using the Video Preview window or by 
connecting to an external monitor. You can optimize previews by adjusting preview quality, prerendering 
video, or building a dynamic RAM preview. The Video Preview window also provides features such as safe 
area overlays, grid overlays, and isolated color channel displays to further enhance your productivity....

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Using the Video Preview window shortcut menu
Right-click the Video Preview window to adjust the following options:
 Choose Default Background, Black Background, or White Background to set the background color for the 
window.
Simulate Device Aspect Ratio displays the output in square pixels. This can prevent distortion of the preview 
when using sources with rectangular pixels. This does not affect the final render.
Show Toolbar toggles the toolbar at the top...

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Optimizing the Video Preview window
Timing and synchronization are critical aspects of any multimedia production. Because complex multimedia 
projects are challenging for any computer, a number of tools are provided to maintain real-time playback 
even though the computer may not be able to process the data quickly enough.
Reducing preview quality
You can adjust the resolution of the Video Preview window and the quality of the preview rendering in order 
to...

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3.Select the type of prerender file to create in the Prerender as drop-down list. Click Custom to configure any 
custom compression options.
Note: Youll need to choose a rendering template that inserts 
pulldown fields to create a standard DV file if your project 
properties are set to 24p or if you selected the 
Allow pulldown 
removal when opening 24p DV 
check box on the General tab 
of the Preferences dialog. Use the 
NTSC DV 24p (inserting 2-3-
3-2...

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Note: Each prerendered section will consist of no more than 
10 seconds (approximately 40 megabytes). Because selective 
prerendering creates multiple files, minor editing on the 
timeline will not invalidate all of your prerendered video—
only the sections you modify will need to be rerendered.
Building dynamic RAM previews
Video frames are automatically dropped when previewing if the computer can’t keep up with processing 
demands. This means that you may not...

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Using split-screen previewing
This feature is available only in the full version of Vegas software.
Click the Split-Screen View button () in the Video Preview window to turn split-screen previews on or off.
Split-screen previews allow you to split the Video Preview window so you can see your affected and 
unaffected video or your video and the contents of the clipboard at the same time. Use split-screen previews 
to fine-tune video effects or to match colors for...

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Showing the video at the cursor position and the contents of the clipboard
1.Position the cursor on the timeline and click the Copy Snapshot button () in the Video Preview window 
to copy a frame to the clipboard.
2.Position the cursor at another point on the timeline.
3.Click the down arrow next to the Split-Screen View button () and choose Clipboard from the menu.
4.Select the Split-Screen View button (). 
5.Choose a preset selection or drag in the Video...

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Viewing the grid
The Video Preview window can display vertical and horizontal lines over your video. You can use the grid to 
help you align objects. To view the grid, click the down arrow next to the 
Overlays button () and choose 
Grid.
Set the grid spacing using the Horizontal grid divisions and Vertical grid divisions settings on the Video tab in the 
Preferences dialog.
Isolating color channels
The Video Preview window allows you to select a specific channel...

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Note: If your video hardware will add a 7.5 IRE setup, click 
the 
Settings button () and select the 7. 5  I R E  S e t u p check box 
in the Video Scopes Settings dialog. Black will be displayed as 
7.5 in the waveform monitor. If your video hardware does 
not add a 7.5 setup, clear the check box, and black will be 
displayed as 0.
Displaying chrominance using the vectorscope monitor
The vectorscope monitor in the Video Scopes window allows you to monitor the...

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5.Hover over a portion of the monitor to display the chroma value at the pointer position:
Displaying luminance using the waveform monitor
The waveform monitor in the Video Scopes window allows you to monitor the luminance (brightness or Y 
component) of your video signal. The monitor plots luminance on the vertical axis and the width of the 
current frame on the horizontal axis.
If you want to include chroma (color or C component) information in the waveform...