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Output Quality
The Output Quality setting determines how much disk
space will be occupied by a page.
The VIP system saves disk space by using a method
known as JPEG Compression (JPEG stands for Joint
Picture Expert Group – the committee that developed
the standard) which is widely used in the video industry
as well as the World Wide Web.
In JPEG, picture quality is traded for smaller file sizes, so
if you want to fit more pictures in the same amount of
space, you can lower their quality. With some pictures,
no noticeable difference occurs at all, and with others,
the artifacts (side effects) of JPEG compression are very
noticeable. Because of this, VIP Composer allows you to
choose your own quality level.
Normally, pages are set to Medium quality. As you
project grows to include more pages, you may hit the
limit of the single floppy disk that goes to the VIP
Player. A typical number of pages to expect is about 25.
By turning the quality down on selected pages (you may
not see a difference, but the files will be smaller), you
can make room for more pages.
Also, different types of images compress better than
others. Pages on solid colors or ramps actually require
higher resolution to come across clearly than do pages
on complex backgrounds, which is why the pages in the
Tutorial project have all been set to "High".
As you work with the system, try different quality
settings until you get a feel for what quality levels to use
for different designs of pages.
VIP User Manual
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