Apple Compressor (4.0) - Manual (Page 135)

Chapter 5 Custom settings and output formats 135
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TARGA (Truevision Advanced Raster Graphics Adapter): TARGA, also commonly referred to as TGA,
is a raster graphics format commonly used by animation and video applications.
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DPX: DPX is a common file format for digital intermediate and visual effects work and is an
ANSI/SMPTE standard (268M-2003).
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IFF (Interchange File Format): IFF is a generic file format originally introduced by the Electronic
Arts company in 1985 (in cooperation with Commodore-Amiga) to ease transfer of data
between software products produced by different companies.
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JPEG (Joint Photographic Experts Group): JPEG is a common still-image format.
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OpenEXR: OpenEXR is a high dynamic range (HDR) image file format developed by Industrial
Light & Magic for use in computer imaging applications.
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Frame Rate: Use this field and pop-up menu to enter the frame rate at which you want the still
images to be created. The higher the frame rate, the greater the number of still images created
and the larger the output file. For example, if you choose 30 fps, Compressor creates 30 still
images for every second of the video clip you’re transcoding. If you choose 8 fps, Compressor
creates only 8 still images per second.
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Create unique output directory: Select this checkbox to create a folder for the resulting output
files. The folder is given the same name as the media file, and the files are stored inside the
folder and named frame-nnn. For example, if the output filename is test, the directory path is
destination/test/frame-nnn.
If you don’t select this checkbox, the output files are stored at the top level of your destination
folder and named filename-nnn rather than frame-nnn. Be aware that even at the slow rate of
8 fps, a large number of files are created when you transcode to this output format, so creating
an output directory is a good way to keep your files organized.
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Add leading zeros to frame numbers: Select this checkbox to add leading zeros to the frame
number. When you choose this method, all the output files consist of multidigit filenames,
such as frame-000001 (or filename-000001 if these files aren’t being saved in a unique output
directory). If you don’t select this checkbox, each file uses a regular filename, such as frame-1
(or filename-1 if these files aren’t being saved in a unique output directory).
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Scale image to preserve aspect ratio: Affects only video media using non-square pixels, such as
NTSC and PAL formats, and only when you’re not intentionally changing the video frame size.
Select this checkbox to scale the output files to use square pixels and maintain the original
aspect ratio (which results in an increase or decrease in the number of horizontal and vertical
pixels). If the checkbox is not selected (the default setting), the output files use the same pixel
aspect ratio and have the same number of horizontal and vertical pixels as the original video.
5 Click Save.
Important: Use FTP software to upload the image sequence to remote servers.