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A few lines of text about the range coder, part of a patch by lars punkt taeuber ät web punkt de.

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Originally committed as revision 11397 to svn://svn.ffmpeg.org/ffmpeg/trunk
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lars.taeuber@web.de 2008-01-04 17:44:42 +00:00 committed by Michael Niedermayer
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commit e5635270d3
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doc/snow.txt
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@ -309,6 +309,13 @@ Decoding process:
Range Coder:
============
FIXME
The implemented range coder is an adapted version based upon "Range encoding:
an algorithm for removing redundancy from a digitised message." by G. N. N.
Martin.
The encoded symbols encoded by the ffmpeg range coder are bits (0|1). The
associated probabilities are not fix but change depending on the symbol mix
seen so far.
Neighboring Blocks:
===================