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VP3
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{{Short description|Video codec by On2 Technologies}} {{other uses}} {{Refimprove|date=May 2010}} '''On2 TrueMotion VP3''' is a ([[free file format|royalty-free]]) [[Lossy compression|lossy]] [[video compression format]] and [[video codec]]. It is an incarnation of the [[TrueMotion]] video codec, a series of video codecs developed by [[On2 Technologies]]. There is no formal specification for the VP3 [[bitstream format]] beyond the VP3 source code published by On2 Technologies. In 2003, Mike Melanson created an incomplete description of the VP3 bitstream format and decoding process at a higher level than source code, with some help from On2 and the [[Xiph.Org Foundation]].
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