In September , 2001 it was donated to the public as Open Source , and On2 disclaimed all rights to it, including their Patent s on the technology. In 2002 , On2 entered into an agreement with the Xiph.org Foundation to make VP3 the basis of a new, free video codec, Ogg Theora . It can be operated alongside Ogg Vorbis to provide a set of open source Multimedia Codec s that are intended to be free of patent licensing restrictions and royalty fees. Theora is currently still in Alpha stage, as of August 2005 . However, the bitstream format was frozen with alpha 3, therefore all video encoded with the current codec will be playable by future versions of the Theora decoder.
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