compression method; the resolution, or screen size; the frame rate; the video data rate;
and the audio format and audio data rate.
One of the most important decisions is the choice of a codec. All digital video intended
for distribution must be compressed. The particular codec used will largely determine
the quality of the resulting video as well as the ways in which it can be effectively deliv-
ered. Editing software generally provides a range of choices, often including the various
versions of MPEG and streaming formats such as RealVideo.
Screen resolutions also vary depending on the mode of delivery. A resolution of 720
3 480 is generally used for DVDs while a lower resolution such as 320 3 240 is more
appropriate for ...
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