Bandwidth Considerations
SMIL presentations are composed of multiple elements, and each
of these elements requires some amount of bandwidth to be delivered
to the viewer's media player.
The total bandwidth required by all the elements of a presentation
that play simultaneously must not exceed the total bandwidth available
to the target viewer.
Additionally, specific clips (such as images) must stay within
the bandwidth boundaries established by their respective files.
For example, a RealPix file might specify a bitrate of 12,000 (12k);
images in the file should be approximately that size to prevent
the presentation from stalling.
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