Apple Compressor 2 - Manual (Page 7)

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An Introduction to Compressor
Compressor is an essential part of the video compression
process. It makes compression fast, efficient, and
convenient, giving you more options in your choices of
compression presets, settings, and output formats.
With the ability to view and experience media content in many different ways (such as
on websites, CD-ROM discs, and DVDs), content authors need a quick and easy means
of converting their material so that it can be conveniently distributed to a variety of
playback devices.
Whether you want to create high-quality movie trailers that can be opened and viewed
over the web within seconds, or you just want to transfer a video clip to a CD or DVD,
you need to compress media files so that they fit into limited space and are readily
available for viewing. Compressor is a high-speed video and audio encoding tool that
provides an efficient way to convert content for any of these methods.
In addition to the variety of viewing methods, there are also a variety of output formats
to consider. You may need to compress the same media file into different output
formats just to accommodate different media players and uses. With Compressor, you
can select different output formats for use with the various distribution models.