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Outputting still images (Frame Sequence)
Ultra lets you export a session as a series of still images rather than as a video clip. Some
advanced image compositing tools work better with this type of frame sequence than with
video. This file format also makes the composited content available for use in standard image-
editing applications, such as Adobe Photoshop and Fireworks.
To export a series of stills, select Frame Sequence in the Format field, and then select the
image type in the Codec field. The frame rate, field order, and resolution also apply despite
the fact that you're exporting stills, not video. The product of exporting in this manner is a
series of sequentially numbered images, one for each frame. The text that you enter in the
Image Prefix Name field appears at the beginning of each image's file name, before the image
number. Since a session that is only one minute in length produces well over 1,000 images,
you may want to create a folder for each frame sequence that you export. You can do this
through the dialog box that appears when you click the Browse button on the Output Folder.
Outputting clips or stills with an alpha channel
If you want to output a clip containing only the input clip with the subject keyed and the rest
of the frame transparent, set the format to DirectShow AVI, set the codec to Uncompressed,
and then select 32-bit Keyed Source. This option is also available when you export still images
(Format = Frame Sequence) as PSD, PNG, BMP, TIFF, and so on.
When you export in 32-bit, only the input clip layer is included, and all of the settings related
to the size, position, and orientation, both those predefined by a virtual set or user-defined by
using the Scene, Input, and Pan & Zoom tabs are ignored. In other words, 32-bit output
movies are 1:1 relative to the source for the input clip layer. If the Input Preview Monitor is
1:1, then what you see is what appears in the output movie.
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How to
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