Adobe 25510629 User Guide - Page 122
Outputting still images (Frame Sequence), Outputting clips or stills with an alpha channel
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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 imageediting 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. 122 How to