Specifications

38 Chapter 3 Media
Computer-generated Animations When using computer-generated moving images, you must specify the frame
rate and resolution of the resulting movie during rendering. Generally, when
combining computer generated and pre-recorded video material, the frame
rate is dictated by the live material. Alternatively, if your playback computer is
fast enough, match the rendered frame rate to the WATCHOUT display frame
rate (see “Display Framerate” on page 121); for example, 60 fps progressive.
It’s often advantageous to use smaller, computer generated, moving images
layered on top of larger still images. By rendering only the parts of an image
that actually move, not only do you lower the burden on the playback machine,
but you also reduce rendering times. Keep in mind that you can make non-
square movies, or even holes inside movies, by using transparency options in
supporting applications and codecs.
As computer generated movies are by nature resolution independent, it is also
possible to make movies that are much larger than a single display area. Very
large movies may need to be pre-split in order to be used in WATCHOUT (see
“Pre-splitting Large Movies” on page 42), depending on the performance of
the display computers.